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1 | /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ |
1 | /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ |
2 | /* |
2 | /* |
3 | * Copyright © 2005 Keith Packard |
3 | * Copyright © 2005 Keith Packard |
4 | * |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it either under the terms of the GNU Lesser General Public |
6 | * modify it either under the terms of the GNU Lesser General Public |
7 | * License version 2.1 as published by the Free Software Foundation |
7 | * License version 2.1 as published by the Free Software Foundation |
8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
10 | * notice, a recipient may use your version of this file under either |
10 | * notice, a recipient may use your version of this file under either |
11 | * the MPL or the LGPL. |
11 | * the MPL or the LGPL. |
12 | * |
12 | * |
13 | * You should have received a copy of the LGPL along with this library |
13 | * You should have received a copy of the LGPL along with this library |
14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
16 | * You should have received a copy of the MPL along with this library |
16 | * You should have received a copy of the MPL along with this library |
17 | * in the file COPYING-MPL-1.1 |
17 | * in the file COPYING-MPL-1.1 |
18 | * |
18 | * |
19 | * The contents of this file are subject to the Mozilla Public License |
19 | * The contents of this file are subject to the Mozilla Public License |
20 | * Version 1.1 (the "License"); you may not use this file except in |
20 | * Version 1.1 (the "License"); you may not use this file except in |
21 | * compliance with the License. You may obtain a copy of the License at |
21 | * compliance with the License. You may obtain a copy of the License at |
22 | * http://www.mozilla.org/MPL/ |
22 | * http://www.mozilla.org/MPL/ |
23 | * |
23 | * |
24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
26 | * the specific language governing rights and limitations. |
26 | * the specific language governing rights and limitations. |
27 | * |
27 | * |
28 | * The Original Code is the cairo graphics library. |
28 | * The Original Code is the cairo graphics library. |
29 | * |
29 | * |
30 | * The Initial Developer of the Original Code is Keith Packard |
30 | * The Initial Developer of the Original Code is Keith Packard |
31 | * |
31 | * |
32 | * Contributor(s): |
32 | * Contributor(s): |
33 | * Keith Packard |
33 | * Keith Packard |
34 | * Carl D. Worth |
34 | * Carl D. Worth |
35 | * Graydon Hoare |
35 | * Graydon Hoare |
36 | * Owen Taylor |
36 | * Owen Taylor |
37 | * Behdad Esfahbod |
37 | * Behdad Esfahbod |
38 | * Chris Wilson |
38 | * Chris Wilson |
39 | */ |
39 | */ |
40 | 40 | ||
41 | #include "cairoint.h" |
41 | #include "cairoint.h" |
42 | #include "cairo-error-private.h" |
42 | #include "cairo-error-private.h" |
- | 43 | #include "cairo-image-surface-private.h" |
|
- | 44 | #include "cairo-list-inline.h" |
|
- | 45 | #include "cairo-pattern-private.h" |
|
43 | #include "cairo-scaled-font-private.h" |
46 | #include "cairo-scaled-font-private.h" |
- | 47 | #include "cairo-surface-backend-private.h" |
|
44 | 48 | ||
45 | #if _XOPEN_SOURCE >= 600 || defined (_ISOC99_SOURCE) |
49 | #if _XOPEN_SOURCE >= 600 || defined (_ISOC99_SOURCE) |
46 | #define ISFINITE(x) isfinite (x) |
50 | #define ISFINITE(x) isfinite (x) |
47 | #else |
51 | #else |
48 | #define ISFINITE(x) ((x) * (x) >= 0.) /* check for NaNs */ |
52 | #define ISFINITE(x) ((x) * (x) >= 0.) /* check for NaNs */ |
49 | #endif |
53 | #endif |
50 | 54 | ||
51 | /** |
55 | /** |
52 | * SECTION:cairo-scaled-font |
56 | * SECTION:cairo-scaled-font |
53 | * @Title: cairo_scaled_font_t |
57 | * @Title: cairo_scaled_font_t |
54 | * @Short_Description: Font face at particular size and options |
58 | * @Short_Description: Font face at particular size and options |
55 | * @See_Also: #cairo_font_face_t, #cairo_matrix_t, #cairo_font_options_t |
59 | * @See_Also: #cairo_font_face_t, #cairo_matrix_t, #cairo_font_options_t |
56 | * |
60 | * |
57 | * #cairo_scaled_font_t represents a realization of a font face at a particular |
61 | * #cairo_scaled_font_t represents a realization of a font face at a particular |
58 | * size and transformation and a certain set of font options. |
62 | * size and transformation and a certain set of font options. |
59 | */ |
63 | **/ |
- | 64 | ||
- | 65 | static uint32_t |
|
- | 66 | _cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font); |
|
60 | 67 | ||
61 | /* Global Glyph Cache |
68 | /* Global Glyph Cache |
62 | * |
69 | * |
63 | * We maintain a global pool of glyphs split between all active fonts. This |
70 | * We maintain a global pool of glyphs split between all active fonts. This |
64 | * allows a heavily used individual font to cache more glyphs than we could |
71 | * allows a heavily used individual font to cache more glyphs than we could |
65 | * manage if we used per-font glyph caches, but at the same time maintains |
72 | * manage if we used per-font glyph caches, but at the same time maintains |
66 | * fairness across all fonts and provides a cap on the maximum number of |
73 | * fairness across all fonts and provides a cap on the maximum number of |
67 | * global glyphs. |
74 | * global glyphs. |
68 | * |
75 | * |
69 | * The glyphs are allocated in pages, which are capped in the global pool. |
76 | * The glyphs are allocated in pages, which are capped in the global pool. |
70 | * Using pages means we can reduce the frequency at which we have to probe the |
77 | * Using pages means we can reduce the frequency at which we have to probe the |
71 | * global pool and ameliorates the memory allocation pressure. |
78 | * global pool and ameliorates the memory allocation pressure. |
72 | */ |
79 | */ |
73 | 80 | ||
74 | /* XXX: This number is arbitrary---we've never done any measurement of this. */ |
81 | /* XXX: This number is arbitrary---we've never done any measurement of this. */ |
75 | #define MAX_GLYPH_PAGES_CACHED 512 |
82 | #define MAX_GLYPH_PAGES_CACHED 512 |
76 | static cairo_cache_t cairo_scaled_glyph_page_cache; |
83 | static cairo_cache_t cairo_scaled_glyph_page_cache; |
77 | 84 | ||
78 | #define CAIRO_SCALED_GLYPH_PAGE_SIZE 32 |
85 | #define CAIRO_SCALED_GLYPH_PAGE_SIZE 32 |
79 | struct _cairo_scaled_glyph_page { |
86 | struct _cairo_scaled_glyph_page { |
80 | cairo_cache_entry_t cache_entry; |
87 | cairo_cache_entry_t cache_entry; |
81 | 88 | ||
82 | cairo_list_t link; |
89 | cairo_list_t link; |
83 | 90 | ||
84 | unsigned int num_glyphs; |
91 | unsigned int num_glyphs; |
85 | cairo_scaled_glyph_t glyphs[CAIRO_SCALED_GLYPH_PAGE_SIZE]; |
92 | cairo_scaled_glyph_t glyphs[CAIRO_SCALED_GLYPH_PAGE_SIZE]; |
86 | }; |
93 | }; |
87 | 94 | ||
88 | /* |
95 | /* |
89 | * Notes: |
96 | * Notes: |
90 | * |
97 | * |
91 | * To store rasterizations of glyphs, we use an image surface and the |
98 | * To store rasterizations of glyphs, we use an image surface and the |
92 | * device offset to represent the glyph origin. |
99 | * device offset to represent the glyph origin. |
93 | * |
100 | * |
94 | * A device_transform converts from device space (a conceptual space) to |
101 | * A device_transform converts from device space (a conceptual space) to |
95 | * surface space. For simple cases of translation only, it's called a |
102 | * surface space. For simple cases of translation only, it's called a |
96 | * device_offset and is public API (cairo_surface_[gs]et_device_offset()). |
103 | * device_offset and is public API (cairo_surface_[gs]et_device_offset()). |
97 | * A possibly better name for those functions could have been |
104 | * A possibly better name for those functions could have been |
98 | * cairo_surface_[gs]et_origin(). So, that's what they do: they set where |
105 | * cairo_surface_[gs]et_origin(). So, that's what they do: they set where |
99 | * the device-space origin (0,0) is in the surface. If the origin is inside |
106 | * the device-space origin (0,0) is in the surface. If the origin is inside |
100 | * the surface, device_offset values are positive. It may look like this: |
107 | * the surface, device_offset values are positive. It may look like this: |
101 | * |
108 | * |
102 | * Device space: |
109 | * Device space: |
103 | * (-x,-y) <-- negative numbers |
110 | * (-x,-y) <-- negative numbers |
104 | * +----------------+ |
111 | * +----------------+ |
105 | * | . | |
112 | * | . | |
106 | * | . | |
113 | * | . | |
107 | * |......(0,0) <---|-- device-space origin |
114 | * |......(0,0) <---|-- device-space origin |
108 | * | | |
115 | * | | |
109 | * | | |
116 | * | | |
110 | * +----------------+ |
117 | * +----------------+ |
111 | * (width-x,height-y) |
118 | * (width-x,height-y) |
112 | * |
119 | * |
113 | * Surface space: |
120 | * Surface space: |
114 | * (0,0) <-- surface-space origin |
121 | * (0,0) <-- surface-space origin |
115 | * +---------------+ |
122 | * +---------------+ |
116 | * | . | |
123 | * | . | |
117 | * | . | |
124 | * | . | |
118 | * |......(x,y) <--|-- device_offset |
125 | * |......(x,y) <--|-- device_offset |
119 | * | | |
126 | * | | |
120 | * | | |
127 | * | | |
121 | * +---------------+ |
128 | * +---------------+ |
122 | * (width,height) |
129 | * (width,height) |
123 | * |
130 | * |
124 | * In other words: device_offset is the coordinates of the device-space |
131 | * In other words: device_offset is the coordinates of the device-space |
125 | * origin relative to the top-left of the surface. |
132 | * origin relative to the top-left of the surface. |
126 | * |
133 | * |
127 | * We use device offsets in a couple of places: |
134 | * We use device offsets in a couple of places: |
128 | * |
135 | * |
129 | * - Public API: To let toolkits like Gtk+ give user a surface that |
136 | * - Public API: To let toolkits like Gtk+ give user a surface that |
130 | * only represents part of the final destination (say, the expose |
137 | * only represents part of the final destination (say, the expose |
131 | * area), but has the same device space as the destination. In these |
138 | * area), but has the same device space as the destination. In these |
132 | * cases device_offset is typically negative. Example: |
139 | * cases device_offset is typically negative. Example: |
133 | * |
140 | * |
134 | * application window |
141 | * application window |
135 | * +---------------+ |
142 | * +---------------+ |
136 | * | . | |
143 | * | . | |
137 | * | (x,y). | |
144 | * | (x,y). | |
138 | * |......+---+ | |
145 | * |......+---+ | |
139 | * | | | <--|-- expose area |
146 | * | | | <--|-- expose area |
140 | * | +---+ | |
147 | * | +---+ | |
141 | * +---------------+ |
148 | * +---------------+ |
142 | * |
149 | * |
143 | * In this case, the user of cairo API can set the device_space on |
150 | * In this case, the user of cairo API can set the device_space on |
144 | * the expose area to (-x,-y) to move the device space origin to that |
151 | * the expose area to (-x,-y) to move the device space origin to that |
145 | * of the application window, such that drawing in the expose area |
152 | * of the application window, such that drawing in the expose area |
146 | * surface and painting it in the application window has the same |
153 | * surface and painting it in the application window has the same |
147 | * effect as drawing in the application window directly. Gtk+ has |
154 | * effect as drawing in the application window directly. Gtk+ has |
148 | * been using this feature. |
155 | * been using this feature. |
149 | * |
156 | * |
150 | * - Glyph surfaces: In most font rendering systems, glyph surfaces |
157 | * - Glyph surfaces: In most font rendering systems, glyph surfaces |
151 | * have an origin at (0,0) and a bounding box that is typically |
158 | * have an origin at (0,0) and a bounding box that is typically |
152 | * represented as (x_bearing,y_bearing,width,height). Depending on |
159 | * represented as (x_bearing,y_bearing,width,height). Depending on |
153 | * which way y progresses in the system, y_bearing may typically be |
160 | * which way y progresses in the system, y_bearing may typically be |
154 | * negative (for systems similar to cairo, with origin at top left), |
161 | * negative (for systems similar to cairo, with origin at top left), |
155 | * or be positive (in systems like PDF with origin at bottom left). |
162 | * or be positive (in systems like PDF with origin at bottom left). |
156 | * No matter which is the case, it is important to note that |
163 | * No matter which is the case, it is important to note that |
157 | * (x_bearing,y_bearing) is the coordinates of top-left of the glyph |
164 | * (x_bearing,y_bearing) is the coordinates of top-left of the glyph |
158 | * relative to the glyph origin. That is, for example: |
165 | * relative to the glyph origin. That is, for example: |
159 | * |
166 | * |
160 | * Scaled-glyph space: |
167 | * Scaled-glyph space: |
161 | * |
168 | * |
162 | * (x_bearing,y_bearing) <-- negative numbers |
169 | * (x_bearing,y_bearing) <-- negative numbers |
163 | * +----------------+ |
170 | * +----------------+ |
164 | * | . | |
171 | * | . | |
165 | * | . | |
172 | * | . | |
166 | * |......(0,0) <---|-- glyph origin |
173 | * |......(0,0) <---|-- glyph origin |
167 | * | | |
174 | * | | |
168 | * | | |
175 | * | | |
169 | * +----------------+ |
176 | * +----------------+ |
170 | * (width+x_bearing,height+y_bearing) |
177 | * (width+x_bearing,height+y_bearing) |
171 | * |
178 | * |
172 | * Note the similarity of the origin to the device space. That is |
179 | * Note the similarity of the origin to the device space. That is |
173 | * exactly how we use the device_offset to represent scaled glyphs: |
180 | * exactly how we use the device_offset to represent scaled glyphs: |
174 | * to use the device-space origin as the glyph origin. |
181 | * to use the device-space origin as the glyph origin. |
175 | * |
182 | * |
176 | * Now compare the scaled-glyph space to device-space and surface-space |
183 | * Now compare the scaled-glyph space to device-space and surface-space |
177 | * and convince yourself that: |
184 | * and convince yourself that: |
178 | * |
185 | * |
179 | * (x_bearing,y_bearing) = (-x,-y) = - device_offset |
186 | * (x_bearing,y_bearing) = (-x,-y) = - device_offset |
180 | * |
187 | * |
181 | * That's right. If you are not convinced yet, contrast the definition |
188 | * That's right. If you are not convinced yet, contrast the definition |
182 | * of the two: |
189 | * of the two: |
183 | * |
190 | * |
184 | * "(x_bearing,y_bearing) is the coordinates of top-left of the |
191 | * "(x_bearing,y_bearing) is the coordinates of top-left of the |
185 | * glyph relative to the glyph origin." |
192 | * glyph relative to the glyph origin." |
186 | * |
193 | * |
187 | * "In other words: device_offset is the coordinates of the |
194 | * "In other words: device_offset is the coordinates of the |
188 | * device-space origin relative to the top-left of the surface." |
195 | * device-space origin relative to the top-left of the surface." |
189 | * |
196 | * |
190 | * and note that glyph origin = device-space origin. |
197 | * and note that glyph origin = device-space origin. |
191 | */ |
198 | */ |
192 | 199 | ||
193 | static void |
200 | static void |
194 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font); |
201 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font); |
195 | 202 | ||
196 | static void |
203 | static void |
197 | _cairo_scaled_glyph_fini (cairo_scaled_font_t *scaled_font, |
204 | _cairo_scaled_glyph_fini (cairo_scaled_font_t *scaled_font, |
198 | cairo_scaled_glyph_t *scaled_glyph) |
205 | cairo_scaled_glyph_t *scaled_glyph) |
199 | { |
206 | { |
- | 207 | while (! cairo_list_is_empty (&scaled_glyph->dev_privates)) { |
|
- | 208 | cairo_scaled_glyph_private_t *private = |
|
200 | const cairo_surface_backend_t *surface_backend = scaled_font->surface_backend; |
209 | cairo_list_first_entry (&scaled_glyph->dev_privates, |
- | 210 | cairo_scaled_glyph_private_t, |
|
- | 211 | link); |
|
- | 212 | private->destroy (private, scaled_glyph, scaled_font); |
|
- | 213 | } |
|
201 | - | ||
202 | if (surface_backend != NULL && surface_backend->scaled_glyph_fini != NULL) |
214 | |
203 | surface_backend->scaled_glyph_fini (scaled_glyph, scaled_font); |
215 | _cairo_image_scaled_glyph_fini (scaled_font, scaled_glyph); |
204 | 216 | ||
205 | if (scaled_glyph->surface != NULL) |
217 | if (scaled_glyph->surface != NULL) |
206 | cairo_surface_destroy (&scaled_glyph->surface->base); |
218 | cairo_surface_destroy (&scaled_glyph->surface->base); |
207 | 219 | ||
208 | if (scaled_glyph->path != NULL) |
220 | if (scaled_glyph->path != NULL) |
209 | _cairo_path_fixed_destroy (scaled_glyph->path); |
221 | _cairo_path_fixed_destroy (scaled_glyph->path); |
210 | 222 | ||
211 | if (scaled_glyph->recording_surface != NULL) { |
223 | if (scaled_glyph->recording_surface != NULL) { |
212 | cairo_surface_finish (scaled_glyph->recording_surface); |
224 | cairo_surface_finish (scaled_glyph->recording_surface); |
213 | cairo_surface_destroy (scaled_glyph->recording_surface); |
225 | cairo_surface_destroy (scaled_glyph->recording_surface); |
214 | } |
226 | } |
215 | } |
227 | } |
216 | 228 | ||
217 | #define ZOMBIE 0 |
229 | #define ZOMBIE 0 |
218 | static const cairo_scaled_font_t _cairo_scaled_font_nil = { |
230 | static const cairo_scaled_font_t _cairo_scaled_font_nil = { |
219 | { ZOMBIE }, /* hash_entry */ |
231 | { ZOMBIE }, /* hash_entry */ |
220 | CAIRO_STATUS_NO_MEMORY, /* status */ |
232 | CAIRO_STATUS_NO_MEMORY, /* status */ |
221 | CAIRO_REFERENCE_COUNT_INVALID, /* ref_count */ |
233 | CAIRO_REFERENCE_COUNT_INVALID, /* ref_count */ |
222 | { 0, 0, 0, NULL }, /* user_data */ |
234 | { 0, 0, 0, NULL }, /* user_data */ |
223 | NULL, /* original_font_face */ |
235 | NULL, /* original_font_face */ |
224 | NULL, /* font_face */ |
236 | NULL, /* font_face */ |
225 | { 1., 0., 0., 1., 0, 0}, /* font_matrix */ |
237 | { 1., 0., 0., 1., 0, 0}, /* font_matrix */ |
226 | { 1., 0., 0., 1., 0, 0}, /* ctm */ |
238 | { 1., 0., 0., 1., 0, 0}, /* ctm */ |
227 | { CAIRO_ANTIALIAS_DEFAULT, /* options */ |
239 | { CAIRO_ANTIALIAS_DEFAULT, /* options */ |
228 | CAIRO_SUBPIXEL_ORDER_DEFAULT, |
240 | CAIRO_SUBPIXEL_ORDER_DEFAULT, |
229 | CAIRO_HINT_STYLE_DEFAULT, |
241 | CAIRO_HINT_STYLE_DEFAULT, |
230 | CAIRO_HINT_METRICS_DEFAULT} , |
242 | CAIRO_HINT_METRICS_DEFAULT} , |
231 | FALSE, /* placeholder */ |
243 | FALSE, /* placeholder */ |
232 | FALSE, /* holdover */ |
244 | FALSE, /* holdover */ |
233 | TRUE, /* finished */ |
245 | TRUE, /* finished */ |
234 | { 1., 0., 0., 1., 0, 0}, /* scale */ |
246 | { 1., 0., 0., 1., 0, 0}, /* scale */ |
235 | { 1., 0., 0., 1., 0, 0}, /* scale_inverse */ |
247 | { 1., 0., 0., 1., 0, 0}, /* scale_inverse */ |
236 | 1., /* max_scale */ |
248 | 1., /* max_scale */ |
237 | { 0., 0., 0., 0., 0. }, /* extents */ |
249 | { 0., 0., 0., 0., 0. }, /* extents */ |
238 | { 0., 0., 0., 0., 0. }, /* fs_extents */ |
250 | { 0., 0., 0., 0., 0. }, /* fs_extents */ |
239 | CAIRO_MUTEX_NIL_INITIALIZER,/* mutex */ |
251 | CAIRO_MUTEX_NIL_INITIALIZER,/* mutex */ |
240 | NULL, /* glyphs */ |
252 | NULL, /* glyphs */ |
241 | { NULL, NULL }, /* pages */ |
253 | { NULL, NULL }, /* pages */ |
242 | FALSE, /* cache_frozen */ |
254 | FALSE, /* cache_frozen */ |
243 | FALSE, /* global_cache_frozen */ |
255 | FALSE, /* global_cache_frozen */ |
244 | NULL, /* surface_backend */ |
- | |
245 | NULL, /* surface_private */ |
256 | { NULL, NULL }, /* privates */ |
246 | NULL /* backend */ |
257 | NULL /* backend */ |
247 | }; |
258 | }; |
248 | 259 | ||
249 | /** |
260 | /** |
250 | * _cairo_scaled_font_set_error: |
261 | * _cairo_scaled_font_set_error: |
251 | * @scaled_font: a scaled_font |
262 | * @scaled_font: a scaled_font |
252 | * @status: a status value indicating an error |
263 | * @status: a status value indicating an error |
253 | * |
264 | * |
254 | * Atomically sets scaled_font->status to @status and calls _cairo_error; |
265 | * Atomically sets scaled_font->status to @status and calls _cairo_error; |
255 | * Does nothing if status is %CAIRO_STATUS_SUCCESS. |
266 | * Does nothing if status is %CAIRO_STATUS_SUCCESS. |
256 | * |
267 | * |
257 | * All assignments of an error status to scaled_font->status should happen |
268 | * All assignments of an error status to scaled_font->status should happen |
258 | * through _cairo_scaled_font_set_error(). Note that due to the nature of |
269 | * through _cairo_scaled_font_set_error(). Note that due to the nature of |
259 | * the atomic operation, it is not safe to call this function on the nil |
270 | * the atomic operation, it is not safe to call this function on the nil |
260 | * objects. |
271 | * objects. |
261 | * |
272 | * |
262 | * The purpose of this function is to allow the user to set a |
273 | * The purpose of this function is to allow the user to set a |
263 | * breakpoint in _cairo_error() to generate a stack trace for when the |
274 | * breakpoint in _cairo_error() to generate a stack trace for when the |
264 | * user causes cairo to detect an error. |
275 | * user causes cairo to detect an error. |
265 | * |
276 | * |
266 | * Return value: the error status. |
277 | * Return value: the error status. |
267 | **/ |
278 | **/ |
268 | cairo_status_t |
279 | cairo_status_t |
269 | _cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font, |
280 | _cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font, |
270 | cairo_status_t status) |
281 | cairo_status_t status) |
271 | { |
282 | { |
272 | if (status == CAIRO_STATUS_SUCCESS) |
283 | if (status == CAIRO_STATUS_SUCCESS) |
273 | return status; |
284 | return status; |
274 | 285 | ||
275 | /* Don't overwrite an existing error. This preserves the first |
286 | /* Don't overwrite an existing error. This preserves the first |
276 | * error, which is the most significant. */ |
287 | * error, which is the most significant. */ |
277 | _cairo_status_set_error (&scaled_font->status, status); |
288 | _cairo_status_set_error (&scaled_font->status, status); |
278 | 289 | ||
279 | return _cairo_error (status); |
290 | return _cairo_error (status); |
280 | } |
291 | } |
281 | 292 | ||
282 | /** |
293 | /** |
283 | * cairo_scaled_font_get_type: |
294 | * cairo_scaled_font_get_type: |
284 | * @scaled_font: a #cairo_scaled_font_t |
295 | * @scaled_font: a #cairo_scaled_font_t |
285 | * |
296 | * |
286 | * This function returns the type of the backend used to create |
297 | * This function returns the type of the backend used to create |
287 | * a scaled font. See #cairo_font_type_t for available types. |
298 | * a scaled font. See #cairo_font_type_t for available types. |
288 | * However, this function never returns %CAIRO_FONT_TYPE_TOY. |
299 | * However, this function never returns %CAIRO_FONT_TYPE_TOY. |
289 | * |
300 | * |
290 | * Return value: The type of @scaled_font. |
301 | * Return value: The type of @scaled_font. |
291 | * |
302 | * |
292 | * Since: 1.2 |
303 | * Since: 1.2 |
293 | **/ |
304 | **/ |
294 | cairo_font_type_t |
305 | cairo_font_type_t |
295 | cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font) |
306 | cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font) |
296 | { |
307 | { |
297 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
308 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
298 | return CAIRO_FONT_TYPE_TOY; |
309 | return CAIRO_FONT_TYPE_TOY; |
299 | 310 | ||
300 | return scaled_font->backend->type; |
311 | return scaled_font->backend->type; |
301 | } |
312 | } |
302 | 313 | ||
303 | /** |
314 | /** |
304 | * cairo_scaled_font_status: |
315 | * cairo_scaled_font_status: |
305 | * @scaled_font: a #cairo_scaled_font_t |
316 | * @scaled_font: a #cairo_scaled_font_t |
306 | * |
317 | * |
307 | * Checks whether an error has previously occurred for this |
318 | * Checks whether an error has previously occurred for this |
308 | * scaled_font. |
319 | * scaled_font. |
309 | * |
320 | * |
310 | * Return value: %CAIRO_STATUS_SUCCESS or another error such as |
321 | * Return value: %CAIRO_STATUS_SUCCESS or another error such as |
311 | * %CAIRO_STATUS_NO_MEMORY. |
322 | * %CAIRO_STATUS_NO_MEMORY. |
- | 323 | * |
|
- | 324 | * Since: 1.0 |
|
312 | **/ |
325 | **/ |
313 | cairo_status_t |
326 | cairo_status_t |
314 | cairo_scaled_font_status (cairo_scaled_font_t *scaled_font) |
327 | cairo_scaled_font_status (cairo_scaled_font_t *scaled_font) |
315 | { |
328 | { |
316 | return scaled_font->status; |
329 | return scaled_font->status; |
317 | } |
330 | } |
318 | slim_hidden_def (cairo_scaled_font_status); |
331 | slim_hidden_def (cairo_scaled_font_status); |
319 | 332 | ||
320 | /* Here we keep a unique mapping from |
333 | /* Here we keep a unique mapping from |
321 | * font_face/matrix/ctm/font_options => #cairo_scaled_font_t. |
334 | * font_face/matrix/ctm/font_options => #cairo_scaled_font_t. |
322 | * |
335 | * |
323 | * Here are the things that we want to map: |
336 | * Here are the things that we want to map: |
324 | * |
337 | * |
325 | * a) All otherwise referenced #cairo_scaled_font_t's |
338 | * a) All otherwise referenced #cairo_scaled_font_t's |
326 | * b) Some number of not otherwise referenced #cairo_scaled_font_t's |
339 | * b) Some number of not otherwise referenced #cairo_scaled_font_t's |
327 | * |
340 | * |
328 | * The implementation uses a hash table which covers (a) |
341 | * The implementation uses a hash table which covers (a) |
329 | * completely. Then, for (b) we have an array of otherwise |
342 | * completely. Then, for (b) we have an array of otherwise |
330 | * unreferenced fonts (holdovers) which are expired in |
343 | * unreferenced fonts (holdovers) which are expired in |
331 | * least-recently-used order. |
344 | * least-recently-used order. |
332 | * |
345 | * |
333 | * The cairo_scaled_font_create() code gets to treat this like a regular |
346 | * The cairo_scaled_font_create() code gets to treat this like a regular |
334 | * hash table. All of the magic for the little holdover cache is in |
347 | * hash table. All of the magic for the little holdover cache is in |
335 | * cairo_scaled_font_reference() and cairo_scaled_font_destroy(). |
348 | * cairo_scaled_font_reference() and cairo_scaled_font_destroy(). |
336 | */ |
349 | */ |
337 | 350 | ||
338 | /* This defines the size of the holdover array ... that is, the number |
351 | /* This defines the size of the holdover array ... that is, the number |
339 | * of scaled fonts we keep around even when not otherwise referenced |
352 | * of scaled fonts we keep around even when not otherwise referenced |
340 | */ |
353 | */ |
341 | #define CAIRO_SCALED_FONT_MAX_HOLDOVERS 256 |
354 | #define CAIRO_SCALED_FONT_MAX_HOLDOVERS 256 |
342 | 355 | ||
343 | typedef struct _cairo_scaled_font_map { |
356 | typedef struct _cairo_scaled_font_map { |
344 | cairo_scaled_font_t *mru_scaled_font; |
357 | cairo_scaled_font_t *mru_scaled_font; |
345 | cairo_hash_table_t *hash_table; |
358 | cairo_hash_table_t *hash_table; |
346 | cairo_scaled_font_t *holdovers[CAIRO_SCALED_FONT_MAX_HOLDOVERS]; |
359 | cairo_scaled_font_t *holdovers[CAIRO_SCALED_FONT_MAX_HOLDOVERS]; |
347 | int num_holdovers; |
360 | int num_holdovers; |
348 | } cairo_scaled_font_map_t; |
361 | } cairo_scaled_font_map_t; |
349 | 362 | ||
350 | static cairo_scaled_font_map_t *cairo_scaled_font_map; |
363 | static cairo_scaled_font_map_t *cairo_scaled_font_map; |
351 | 364 | ||
352 | static int |
365 | static int |
353 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, const void *abstract_key_b); |
366 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, const void *abstract_key_b); |
354 | 367 | ||
355 | static cairo_scaled_font_map_t * |
368 | static cairo_scaled_font_map_t * |
356 | _cairo_scaled_font_map_lock (void) |
369 | _cairo_scaled_font_map_lock (void) |
357 | { |
370 | { |
358 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
371 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
359 | 372 | ||
360 | if (cairo_scaled_font_map == NULL) { |
373 | if (cairo_scaled_font_map == NULL) { |
361 | cairo_scaled_font_map = malloc (sizeof (cairo_scaled_font_map_t)); |
374 | cairo_scaled_font_map = malloc (sizeof (cairo_scaled_font_map_t)); |
362 | if (unlikely (cairo_scaled_font_map == NULL)) |
375 | if (unlikely (cairo_scaled_font_map == NULL)) |
363 | goto CLEANUP_MUTEX_LOCK; |
376 | goto CLEANUP_MUTEX_LOCK; |
364 | 377 | ||
365 | cairo_scaled_font_map->mru_scaled_font = NULL; |
378 | cairo_scaled_font_map->mru_scaled_font = NULL; |
366 | cairo_scaled_font_map->hash_table = |
379 | cairo_scaled_font_map->hash_table = |
367 | _cairo_hash_table_create (_cairo_scaled_font_keys_equal); |
380 | _cairo_hash_table_create (_cairo_scaled_font_keys_equal); |
368 | 381 | ||
369 | if (unlikely (cairo_scaled_font_map->hash_table == NULL)) |
382 | if (unlikely (cairo_scaled_font_map->hash_table == NULL)) |
370 | goto CLEANUP_SCALED_FONT_MAP; |
383 | goto CLEANUP_SCALED_FONT_MAP; |
371 | 384 | ||
372 | cairo_scaled_font_map->num_holdovers = 0; |
385 | cairo_scaled_font_map->num_holdovers = 0; |
373 | } |
386 | } |
374 | 387 | ||
375 | return cairo_scaled_font_map; |
388 | return cairo_scaled_font_map; |
376 | 389 | ||
377 | CLEANUP_SCALED_FONT_MAP: |
390 | CLEANUP_SCALED_FONT_MAP: |
378 | free (cairo_scaled_font_map); |
391 | free (cairo_scaled_font_map); |
379 | cairo_scaled_font_map = NULL; |
392 | cairo_scaled_font_map = NULL; |
380 | CLEANUP_MUTEX_LOCK: |
393 | CLEANUP_MUTEX_LOCK: |
381 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
394 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
382 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); |
395 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); |
383 | return NULL; |
396 | return NULL; |
384 | } |
397 | } |
385 | 398 | ||
386 | static void |
399 | static void |
387 | _cairo_scaled_font_map_unlock (void) |
400 | _cairo_scaled_font_map_unlock (void) |
388 | { |
401 | { |
389 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
402 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
390 | } |
403 | } |
391 | 404 | ||
392 | void |
405 | void |
393 | _cairo_scaled_font_map_destroy (void) |
406 | _cairo_scaled_font_map_destroy (void) |
394 | { |
407 | { |
395 | cairo_scaled_font_map_t *font_map; |
408 | cairo_scaled_font_map_t *font_map; |
396 | cairo_scaled_font_t *scaled_font; |
409 | cairo_scaled_font_t *scaled_font; |
397 | 410 | ||
398 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
411 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
399 | 412 | ||
400 | font_map = cairo_scaled_font_map; |
413 | font_map = cairo_scaled_font_map; |
401 | if (unlikely (font_map == NULL)) { |
414 | if (unlikely (font_map == NULL)) { |
402 | goto CLEANUP_MUTEX_LOCK; |
415 | goto CLEANUP_MUTEX_LOCK; |
403 | } |
416 | } |
404 | 417 | ||
405 | scaled_font = font_map->mru_scaled_font; |
418 | scaled_font = font_map->mru_scaled_font; |
406 | if (scaled_font != NULL) { |
419 | if (scaled_font != NULL) { |
407 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
420 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
408 | cairo_scaled_font_destroy (scaled_font); |
421 | cairo_scaled_font_destroy (scaled_font); |
409 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
422 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
410 | } |
423 | } |
411 | 424 | ||
412 | /* remove scaled_fonts starting from the end so that font_map->holdovers |
425 | /* remove scaled_fonts starting from the end so that font_map->holdovers |
413 | * is always in a consistent state when we release the mutex. */ |
426 | * is always in a consistent state when we release the mutex. */ |
414 | while (font_map->num_holdovers) { |
427 | while (font_map->num_holdovers) { |
415 | scaled_font = font_map->holdovers[font_map->num_holdovers-1]; |
428 | scaled_font = font_map->holdovers[font_map->num_holdovers-1]; |
416 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
429 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
417 | _cairo_hash_table_remove (font_map->hash_table, |
430 | _cairo_hash_table_remove (font_map->hash_table, |
418 | &scaled_font->hash_entry); |
431 | &scaled_font->hash_entry); |
419 | 432 | ||
420 | font_map->num_holdovers--; |
433 | font_map->num_holdovers--; |
421 | 434 | ||
422 | /* This releases the font_map lock to avoid the possibility of a |
435 | /* This releases the font_map lock to avoid the possibility of a |
423 | * recursive deadlock when the scaled font destroy closure gets |
436 | * recursive deadlock when the scaled font destroy closure gets |
424 | * called |
437 | * called |
425 | */ |
438 | */ |
426 | _cairo_scaled_font_fini (scaled_font); |
439 | _cairo_scaled_font_fini (scaled_font); |
427 | 440 | ||
428 | free (scaled_font); |
441 | free (scaled_font); |
429 | } |
442 | } |
430 | 443 | ||
431 | _cairo_hash_table_destroy (font_map->hash_table); |
444 | _cairo_hash_table_destroy (font_map->hash_table); |
432 | 445 | ||
433 | free (cairo_scaled_font_map); |
446 | free (cairo_scaled_font_map); |
434 | cairo_scaled_font_map = NULL; |
447 | cairo_scaled_font_map = NULL; |
435 | 448 | ||
436 | CLEANUP_MUTEX_LOCK: |
449 | CLEANUP_MUTEX_LOCK: |
437 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
450 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
438 | } |
451 | } |
- | 452 | ||
439 | static void |
453 | static void |
440 | _cairo_scaled_glyph_page_destroy (void *closure) |
454 | _cairo_scaled_glyph_page_destroy (cairo_scaled_font_t *scaled_font, |
- | 455 | cairo_scaled_glyph_page_t *page) |
|
441 | { |
456 | { |
442 | cairo_scaled_glyph_page_t *page = closure; |
- | |
443 | cairo_scaled_font_t *scaled_font; |
- | |
444 | unsigned int n; |
457 | unsigned int n; |
- | 458 | ||
445 | 459 | assert (!scaled_font->cache_frozen); |
|
- | 460 | assert (!scaled_font->global_cache_frozen); |
|
446 | scaled_font = (cairo_scaled_font_t *) page->cache_entry.hash; |
461 | |
447 | for (n = 0; n < page->num_glyphs; n++) { |
462 | for (n = 0; n < page->num_glyphs; n++) { |
448 | _cairo_hash_table_remove (scaled_font->glyphs, |
463 | _cairo_hash_table_remove (scaled_font->glyphs, |
449 | &page->glyphs[n].hash_entry); |
464 | &page->glyphs[n].hash_entry); |
450 | _cairo_scaled_glyph_fini (scaled_font, &page->glyphs[n]); |
465 | _cairo_scaled_glyph_fini (scaled_font, &page->glyphs[n]); |
451 | } |
466 | } |
452 | 467 | ||
453 | cairo_list_del (&page->link); |
468 | cairo_list_del (&page->link); |
454 | - | ||
455 | free (page); |
469 | free (page); |
456 | } |
470 | } |
- | 471 | ||
- | 472 | static void |
|
- | 473 | _cairo_scaled_glyph_page_pluck (void *closure) |
|
- | 474 | { |
|
- | 475 | cairo_scaled_glyph_page_t *page = closure; |
|
- | 476 | cairo_scaled_font_t *scaled_font; |
|
- | 477 | ||
- | 478 | assert (! cairo_list_is_empty (&page->link)); |
|
- | 479 | ||
- | 480 | scaled_font = (cairo_scaled_font_t *) page->cache_entry.hash; |
|
- | 481 | ||
- | 482 | CAIRO_MUTEX_LOCK (scaled_font->mutex); |
|
- | 483 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
|
- | 484 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex); |
|
- | 485 | } |
|
457 | 486 | ||
458 | /* If a scaled font wants to unlock the font map while still being |
487 | /* If a scaled font wants to unlock the font map while still being |
459 | * created (needed for user-fonts), we need to take extra care not |
488 | * created (needed for user-fonts), we need to take extra care not |
460 | * ending up with multiple identical scaled fonts being created. |
489 | * ending up with multiple identical scaled fonts being created. |
461 | * |
490 | * |
462 | * What we do is, we create a fake identical scaled font, and mark |
491 | * What we do is, we create a fake identical scaled font, and mark |
463 | * it as placeholder, lock its mutex, and insert that in the fontmap |
492 | * it as placeholder, lock its mutex, and insert that in the fontmap |
464 | * hash table. This makes other code trying to create an identical |
493 | * hash table. This makes other code trying to create an identical |
465 | * scaled font to just wait and retry. |
494 | * scaled font to just wait and retry. |
466 | * |
495 | * |
467 | * The reason we have to create a fake scaled font instead of just using |
496 | * The reason we have to create a fake scaled font instead of just using |
468 | * scaled_font is for lifecycle management: we need to (or rather, |
497 | * scaled_font is for lifecycle management: we need to (or rather, |
469 | * other code needs to) reference the scaled_font in the hash table. |
498 | * other code needs to) reference the scaled_font in the hash table. |
470 | * We can't do that on the input scaled_font as it may be freed by |
499 | * We can't do that on the input scaled_font as it may be freed by |
471 | * font backend upon error. |
500 | * font backend upon error. |
472 | */ |
501 | */ |
473 | 502 | ||
474 | cairo_status_t |
503 | cairo_status_t |
475 | _cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font) |
504 | _cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font) |
476 | { |
505 | { |
477 | cairo_status_t status; |
506 | cairo_status_t status; |
478 | cairo_scaled_font_t *placeholder_scaled_font; |
507 | cairo_scaled_font_t *placeholder_scaled_font; |
479 | 508 | ||
480 | assert (CAIRO_MUTEX_IS_LOCKED (_cairo_scaled_font_map_mutex)); |
509 | assert (CAIRO_MUTEX_IS_LOCKED (_cairo_scaled_font_map_mutex)); |
481 | 510 | ||
482 | status = scaled_font->status; |
511 | status = scaled_font->status; |
483 | if (unlikely (status)) |
512 | if (unlikely (status)) |
484 | return status; |
513 | return status; |
485 | 514 | ||
486 | placeholder_scaled_font = malloc (sizeof (cairo_scaled_font_t)); |
515 | placeholder_scaled_font = malloc (sizeof (cairo_scaled_font_t)); |
487 | if (unlikely (placeholder_scaled_font == NULL)) |
516 | if (unlikely (placeholder_scaled_font == NULL)) |
488 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
517 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
489 | 518 | ||
490 | /* full initialization is wasteful, but who cares... */ |
519 | /* full initialization is wasteful, but who cares... */ |
491 | status = _cairo_scaled_font_init (placeholder_scaled_font, |
520 | status = _cairo_scaled_font_init (placeholder_scaled_font, |
492 | scaled_font->font_face, |
521 | scaled_font->font_face, |
493 | &scaled_font->font_matrix, |
522 | &scaled_font->font_matrix, |
494 | &scaled_font->ctm, |
523 | &scaled_font->ctm, |
495 | &scaled_font->options, |
524 | &scaled_font->options, |
496 | NULL); |
525 | NULL); |
497 | if (unlikely (status)) |
526 | if (unlikely (status)) |
498 | goto FREE_PLACEHOLDER; |
527 | goto FREE_PLACEHOLDER; |
499 | 528 | ||
500 | placeholder_scaled_font->placeholder = TRUE; |
529 | placeholder_scaled_font->placeholder = TRUE; |
- | 530 | ||
- | 531 | placeholder_scaled_font->hash_entry.hash |
|
501 | 532 | = _cairo_scaled_font_compute_hash (placeholder_scaled_font); |
|
502 | status = _cairo_hash_table_insert (cairo_scaled_font_map->hash_table, |
533 | status = _cairo_hash_table_insert (cairo_scaled_font_map->hash_table, |
503 | &placeholder_scaled_font->hash_entry); |
534 | &placeholder_scaled_font->hash_entry); |
504 | if (unlikely (status)) |
535 | if (unlikely (status)) |
505 | goto FINI_PLACEHOLDER; |
536 | goto FINI_PLACEHOLDER; |
506 | 537 | ||
507 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
538 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
508 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex); |
539 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex); |
509 | 540 | ||
510 | return CAIRO_STATUS_SUCCESS; |
541 | return CAIRO_STATUS_SUCCESS; |
511 | 542 | ||
512 | FINI_PLACEHOLDER: |
543 | FINI_PLACEHOLDER: |
513 | _cairo_scaled_font_fini_internal (placeholder_scaled_font); |
544 | _cairo_scaled_font_fini_internal (placeholder_scaled_font); |
514 | FREE_PLACEHOLDER: |
545 | FREE_PLACEHOLDER: |
515 | free (placeholder_scaled_font); |
546 | free (placeholder_scaled_font); |
516 | 547 | ||
517 | return _cairo_scaled_font_set_error (scaled_font, status); |
548 | return _cairo_scaled_font_set_error (scaled_font, status); |
518 | } |
549 | } |
519 | 550 | ||
520 | void |
551 | void |
521 | _cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font) |
552 | _cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font) |
522 | { |
553 | { |
523 | cairo_scaled_font_t *placeholder_scaled_font; |
554 | cairo_scaled_font_t *placeholder_scaled_font; |
524 | 555 | ||
525 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
556 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
- | 557 | ||
- | 558 | /* temporary hash value to match the placeholder */ |
|
- | 559 | scaled_font->hash_entry.hash |
|
526 | 560 | = _cairo_scaled_font_compute_hash (scaled_font); |
|
527 | placeholder_scaled_font = |
561 | placeholder_scaled_font = |
528 | _cairo_hash_table_lookup (cairo_scaled_font_map->hash_table, |
562 | _cairo_hash_table_lookup (cairo_scaled_font_map->hash_table, |
529 | &scaled_font->hash_entry); |
563 | &scaled_font->hash_entry); |
530 | assert (placeholder_scaled_font != NULL); |
564 | assert (placeholder_scaled_font != NULL); |
531 | assert (placeholder_scaled_font->placeholder); |
565 | assert (placeholder_scaled_font->placeholder); |
532 | assert (CAIRO_MUTEX_IS_LOCKED (placeholder_scaled_font->mutex)); |
566 | assert (CAIRO_MUTEX_IS_LOCKED (placeholder_scaled_font->mutex)); |
533 | 567 | ||
534 | _cairo_hash_table_remove (cairo_scaled_font_map->hash_table, |
568 | _cairo_hash_table_remove (cairo_scaled_font_map->hash_table, |
535 | &placeholder_scaled_font->hash_entry); |
569 | &placeholder_scaled_font->hash_entry); |
536 | 570 | ||
537 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
571 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
538 | 572 | ||
539 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex); |
573 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex); |
540 | cairo_scaled_font_destroy (placeholder_scaled_font); |
574 | cairo_scaled_font_destroy (placeholder_scaled_font); |
541 | 575 | ||
542 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
576 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
543 | } |
577 | } |
544 | 578 | ||
545 | static void |
579 | static void |
546 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (cairo_scaled_font_t *placeholder_scaled_font) |
580 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (cairo_scaled_font_t *placeholder_scaled_font) |
547 | { |
581 | { |
548 | /* reference the place holder so it doesn't go away */ |
582 | /* reference the place holder so it doesn't go away */ |
549 | cairo_scaled_font_reference (placeholder_scaled_font); |
583 | cairo_scaled_font_reference (placeholder_scaled_font); |
550 | 584 | ||
551 | /* now unlock the fontmap mutex so creation has a chance to finish */ |
585 | /* now unlock the fontmap mutex so creation has a chance to finish */ |
552 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
586 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
553 | 587 | ||
554 | /* wait on placeholder mutex until we are awaken */ |
588 | /* wait on placeholder mutex until we are awaken */ |
555 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex); |
589 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex); |
556 | 590 | ||
557 | /* ok, creation done. just clean up and back out */ |
591 | /* ok, creation done. just clean up and back out */ |
558 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex); |
592 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex); |
559 | cairo_scaled_font_destroy (placeholder_scaled_font); |
593 | cairo_scaled_font_destroy (placeholder_scaled_font); |
560 | 594 | ||
561 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
595 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
562 | } |
596 | } |
563 | 597 | ||
564 | /* Fowler / Noll / Vo (FNV) Hash (http://www.isthe.com/chongo/tech/comp/fnv/) |
598 | /* Fowler / Noll / Vo (FNV) Hash (http://www.isthe.com/chongo/tech/comp/fnv/) |
565 | * |
599 | * |
566 | * Not necessarily better than a lot of other hashes, but should be OK, and |
600 | * Not necessarily better than a lot of other hashes, but should be OK, and |
567 | * well tested with binary data. |
601 | * well tested with binary data. |
568 | */ |
602 | */ |
569 | 603 | ||
570 | #define FNV_32_PRIME ((uint32_t)0x01000193) |
604 | #define FNV_32_PRIME ((uint32_t)0x01000193) |
571 | #define FNV1_32_INIT ((uint32_t)0x811c9dc5) |
605 | #define FNV1_32_INIT ((uint32_t)0x811c9dc5) |
572 | 606 | ||
573 | static uint32_t |
607 | static uint32_t |
574 | _hash_matrix_fnv (const cairo_matrix_t *matrix, |
608 | _hash_matrix_fnv (const cairo_matrix_t *matrix, |
575 | uint32_t hval) |
609 | uint32_t hval) |
576 | { |
610 | { |
577 | const uint8_t *buffer = (const uint8_t *) matrix; |
611 | const uint8_t *buffer = (const uint8_t *) matrix; |
578 | int len = sizeof (cairo_matrix_t); |
612 | int len = sizeof (cairo_matrix_t); |
579 | do { |
613 | do { |
580 | hval *= FNV_32_PRIME; |
614 | hval *= FNV_32_PRIME; |
581 | hval ^= *buffer++; |
615 | hval ^= *buffer++; |
582 | } while (--len); |
616 | } while (--len); |
583 | 617 | ||
584 | return hval; |
618 | return hval; |
585 | } |
619 | } |
586 | 620 | ||
587 | static uint32_t |
621 | static uint32_t |
588 | _hash_mix_bits (uint32_t hash) |
622 | _hash_mix_bits (uint32_t hash) |
589 | { |
623 | { |
590 | hash += hash << 12; |
624 | hash += hash << 12; |
591 | hash ^= hash >> 7; |
625 | hash ^= hash >> 7; |
592 | hash += hash << 3; |
626 | hash += hash << 3; |
593 | hash ^= hash >> 17; |
627 | hash ^= hash >> 17; |
594 | hash += hash << 5; |
628 | hash += hash << 5; |
595 | return hash; |
629 | return hash; |
596 | } |
630 | } |
- | 631 | ||
- | 632 | static uint32_t |
|
- | 633 | _cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font) |
|
- | 634 | { |
|
- | 635 | uint32_t hash = FNV1_32_INIT; |
|
- | 636 | ||
- | 637 | /* We do a bytewise hash on the font matrices */ |
|
- | 638 | hash = _hash_matrix_fnv (&scaled_font->font_matrix, hash); |
|
- | 639 | hash = _hash_matrix_fnv (&scaled_font->ctm, hash); |
|
- | 640 | hash = _hash_mix_bits (hash); |
|
- | 641 | ||
- | 642 | hash ^= (unsigned long) scaled_font->original_font_face; |
|
- | 643 | hash ^= cairo_font_options_hash (&scaled_font->options); |
|
- | 644 | ||
- | 645 | /* final mixing of bits */ |
|
- | 646 | hash = _hash_mix_bits (hash); |
|
- | 647 | assert (hash != ZOMBIE); |
|
- | 648 | ||
- | 649 | return hash; |
|
- | 650 | } |
|
597 | 651 | ||
598 | static void |
652 | static void |
599 | _cairo_scaled_font_init_key (cairo_scaled_font_t *scaled_font, |
653 | _cairo_scaled_font_init_key (cairo_scaled_font_t *scaled_font, |
600 | cairo_font_face_t *font_face, |
654 | cairo_font_face_t *font_face, |
601 | const cairo_matrix_t *font_matrix, |
655 | const cairo_matrix_t *font_matrix, |
602 | const cairo_matrix_t *ctm, |
656 | const cairo_matrix_t *ctm, |
603 | const cairo_font_options_t *options) |
657 | const cairo_font_options_t *options) |
604 | { |
658 | { |
605 | uint32_t hash = FNV1_32_INIT; |
- | |
606 | - | ||
607 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
659 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
608 | scaled_font->placeholder = FALSE; |
660 | scaled_font->placeholder = FALSE; |
609 | scaled_font->font_face = font_face; |
661 | scaled_font->font_face = font_face; |
- | 662 | scaled_font->original_font_face = font_face; |
|
610 | scaled_font->font_matrix = *font_matrix; |
663 | scaled_font->font_matrix = *font_matrix; |
611 | scaled_font->ctm = *ctm; |
664 | scaled_font->ctm = *ctm; |
612 | /* ignore translation values in the ctm */ |
665 | /* ignore translation values in the ctm */ |
613 | scaled_font->ctm.x0 = 0.; |
666 | scaled_font->ctm.x0 = 0.; |
614 | scaled_font->ctm.y0 = 0.; |
667 | scaled_font->ctm.y0 = 0.; |
615 | _cairo_font_options_init_copy (&scaled_font->options, options); |
668 | _cairo_font_options_init_copy (&scaled_font->options, options); |
616 | - | ||
617 | /* We do a bytewise hash on the font matrices */ |
- | |
618 | hash = _hash_matrix_fnv (&scaled_font->font_matrix, hash); |
- | |
619 | hash = _hash_matrix_fnv (&scaled_font->ctm, hash); |
669 | |
620 | hash = _hash_mix_bits (hash); |
- | |
621 | - | ||
622 | hash ^= (unsigned long) scaled_font->font_face; |
670 | scaled_font->hash_entry.hash = |
623 | hash ^= cairo_font_options_hash (&scaled_font->options); |
- | |
624 | - | ||
625 | /* final mixing of bits */ |
- | |
626 | hash = _hash_mix_bits (hash); |
- | |
627 | - | ||
628 | assert (hash != ZOMBIE); |
- | |
629 | scaled_font->hash_entry.hash = hash; |
671 | _cairo_scaled_font_compute_hash (scaled_font); |
630 | } |
672 | } |
631 | 673 | ||
632 | static cairo_bool_t |
674 | static cairo_bool_t |
633 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, |
675 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, |
634 | const void *abstract_key_b) |
676 | const void *abstract_key_b) |
635 | { |
677 | { |
636 | const cairo_scaled_font_t *key_a = abstract_key_a; |
678 | const cairo_scaled_font_t *key_a = abstract_key_a; |
637 | const cairo_scaled_font_t *key_b = abstract_key_b; |
679 | const cairo_scaled_font_t *key_b = abstract_key_b; |
638 | - | ||
639 | if (key_a->hash_entry.hash != key_b->hash_entry.hash) |
- | |
640 | return FALSE; |
- | |
641 | 680 | ||
642 | return key_a->font_face == key_b->font_face && |
681 | return key_a->original_font_face == key_b->original_font_face && |
643 | memcmp ((unsigned char *)(&key_a->font_matrix.xx), |
682 | memcmp ((unsigned char *)(&key_a->font_matrix.xx), |
644 | (unsigned char *)(&key_b->font_matrix.xx), |
683 | (unsigned char *)(&key_b->font_matrix.xx), |
645 | sizeof(cairo_matrix_t)) == 0 && |
684 | sizeof(cairo_matrix_t)) == 0 && |
646 | memcmp ((unsigned char *)(&key_a->ctm.xx), |
685 | memcmp ((unsigned char *)(&key_a->ctm.xx), |
647 | (unsigned char *)(&key_b->ctm.xx), |
686 | (unsigned char *)(&key_b->ctm.xx), |
648 | sizeof(cairo_matrix_t)) == 0 && |
687 | sizeof(cairo_matrix_t)) == 0 && |
649 | cairo_font_options_equal (&key_a->options, &key_b->options); |
688 | cairo_font_options_equal (&key_a->options, &key_b->options); |
650 | } |
689 | } |
651 | 690 | ||
652 | static cairo_bool_t |
691 | static cairo_bool_t |
653 | _cairo_scaled_font_matches (const cairo_scaled_font_t *scaled_font, |
692 | _cairo_scaled_font_matches (const cairo_scaled_font_t *scaled_font, |
654 | const cairo_font_face_t *font_face, |
693 | const cairo_font_face_t *font_face, |
655 | const cairo_matrix_t *font_matrix, |
694 | const cairo_matrix_t *font_matrix, |
656 | const cairo_matrix_t *ctm, |
695 | const cairo_matrix_t *ctm, |
657 | const cairo_font_options_t *options) |
696 | const cairo_font_options_t *options) |
658 | { |
697 | { |
659 | return scaled_font->original_font_face == font_face && |
698 | return scaled_font->original_font_face == font_face && |
660 | memcmp ((unsigned char *)(&scaled_font->font_matrix.xx), |
699 | memcmp ((unsigned char *)(&scaled_font->font_matrix.xx), |
661 | (unsigned char *)(&font_matrix->xx), |
700 | (unsigned char *)(&font_matrix->xx), |
662 | sizeof(cairo_matrix_t)) == 0 && |
701 | sizeof(cairo_matrix_t)) == 0 && |
663 | memcmp ((unsigned char *)(&scaled_font->ctm.xx), |
702 | memcmp ((unsigned char *)(&scaled_font->ctm.xx), |
664 | (unsigned char *)(&ctm->xx), |
703 | (unsigned char *)(&ctm->xx), |
665 | sizeof(cairo_matrix_t)) == 0 && |
704 | sizeof(cairo_matrix_t)) == 0 && |
666 | cairo_font_options_equal (&scaled_font->options, options); |
705 | cairo_font_options_equal (&scaled_font->options, options); |
667 | } |
706 | } |
668 | - | ||
669 | static cairo_bool_t |
- | |
670 | _cairo_scaled_glyphs_equal (const void *abstract_a, const void *abstract_b) |
- | |
671 | { |
- | |
672 | const cairo_scaled_glyph_t *a = abstract_a; |
- | |
673 | const cairo_scaled_glyph_t *b = abstract_b; |
- | |
674 | - | ||
675 | return a->hash_entry.hash == b->hash_entry.hash; |
- | |
676 | } |
- | |
677 | 707 | ||
678 | /* |
708 | /* |
679 | * Basic #cairo_scaled_font_t object management |
709 | * Basic #cairo_scaled_font_t object management |
680 | */ |
710 | */ |
681 | 711 | ||
682 | cairo_status_t |
712 | cairo_status_t |
683 | _cairo_scaled_font_init (cairo_scaled_font_t *scaled_font, |
713 | _cairo_scaled_font_init (cairo_scaled_font_t *scaled_font, |
684 | cairo_font_face_t *font_face, |
714 | cairo_font_face_t *font_face, |
685 | const cairo_matrix_t *font_matrix, |
715 | const cairo_matrix_t *font_matrix, |
686 | const cairo_matrix_t *ctm, |
716 | const cairo_matrix_t *ctm, |
687 | const cairo_font_options_t *options, |
717 | const cairo_font_options_t *options, |
688 | const cairo_scaled_font_backend_t *backend) |
718 | const cairo_scaled_font_backend_t *backend) |
689 | { |
719 | { |
690 | cairo_status_t status; |
720 | cairo_status_t status; |
691 | 721 | ||
692 | status = cairo_font_options_status ((cairo_font_options_t *) options); |
722 | status = cairo_font_options_status ((cairo_font_options_t *) options); |
693 | if (unlikely (status)) |
723 | if (unlikely (status)) |
694 | return status; |
724 | return status; |
- | 725 | ||
- | 726 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
|
- | 727 | scaled_font->placeholder = FALSE; |
|
695 | 728 | scaled_font->font_face = font_face; |
|
696 | _cairo_scaled_font_init_key (scaled_font, font_face, |
729 | scaled_font->original_font_face = font_face; |
- | 730 | scaled_font->font_matrix = *font_matrix; |
|
- | 731 | scaled_font->ctm = *ctm; |
|
- | 732 | /* ignore translation values in the ctm */ |
|
- | 733 | scaled_font->ctm.x0 = 0.; |
|
- | 734 | scaled_font->ctm.y0 = 0.; |
|
697 | font_matrix, ctm, options); |
735 | _cairo_font_options_init_copy (&scaled_font->options, options); |
698 | 736 | ||
699 | cairo_matrix_multiply (&scaled_font->scale, |
737 | cairo_matrix_multiply (&scaled_font->scale, |
700 | &scaled_font->font_matrix, |
738 | &scaled_font->font_matrix, |
701 | &scaled_font->ctm); |
739 | &scaled_font->ctm); |
702 | 740 | ||
703 | scaled_font->max_scale = MAX (fabs (scaled_font->scale.xx) + fabs (scaled_font->scale.xy), |
741 | scaled_font->max_scale = MAX (fabs (scaled_font->scale.xx) + fabs (scaled_font->scale.xy), |
704 | fabs (scaled_font->scale.yx) + fabs (scaled_font->scale.yy)); |
742 | fabs (scaled_font->scale.yx) + fabs (scaled_font->scale.yy)); |
705 | scaled_font->scale_inverse = scaled_font->scale; |
743 | scaled_font->scale_inverse = scaled_font->scale; |
706 | status = cairo_matrix_invert (&scaled_font->scale_inverse); |
744 | status = cairo_matrix_invert (&scaled_font->scale_inverse); |
707 | if (unlikely (status)) { |
745 | if (unlikely (status)) { |
708 | /* If the font scale matrix is rank 0, just using an all-zero inverse matrix |
746 | /* If the font scale matrix is rank 0, just using an all-zero inverse matrix |
709 | * makes everything work correctly. This make font size 0 work without |
747 | * makes everything work correctly. This make font size 0 work without |
710 | * producing an error. |
748 | * producing an error. |
711 | * |
749 | * |
712 | * FIXME: If the scale is rank 1, we still go into error mode. But then |
750 | * FIXME: If the scale is rank 1, we still go into error mode. But then |
713 | * again, that's what we do everywhere in cairo. |
751 | * again, that's what we do everywhere in cairo. |
714 | * |
752 | * |
715 | * Also, the check for == 0. below may be too harsh... |
753 | * Also, the check for == 0. below may be too harsh... |
716 | */ |
754 | */ |
717 | if (_cairo_matrix_is_scale_0 (&scaled_font->scale)) { |
755 | if (_cairo_matrix_is_scale_0 (&scaled_font->scale)) { |
718 | cairo_matrix_init (&scaled_font->scale_inverse, |
756 | cairo_matrix_init (&scaled_font->scale_inverse, |
719 | 0, 0, 0, 0, |
757 | 0, 0, 0, 0, |
720 | -scaled_font->scale.x0, |
758 | -scaled_font->scale.x0, |
721 | -scaled_font->scale.y0); |
759 | -scaled_font->scale.y0); |
722 | } else |
760 | } else |
723 | return status; |
761 | return status; |
724 | } |
762 | } |
725 | 763 | ||
726 | scaled_font->glyphs = _cairo_hash_table_create (_cairo_scaled_glyphs_equal); |
764 | scaled_font->glyphs = _cairo_hash_table_create (NULL); |
727 | if (unlikely (scaled_font->glyphs == NULL)) |
765 | if (unlikely (scaled_font->glyphs == NULL)) |
728 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
766 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
729 | 767 | ||
730 | cairo_list_init (&scaled_font->glyph_pages); |
768 | cairo_list_init (&scaled_font->glyph_pages); |
731 | scaled_font->cache_frozen = FALSE; |
769 | scaled_font->cache_frozen = FALSE; |
732 | scaled_font->global_cache_frozen = FALSE; |
770 | scaled_font->global_cache_frozen = FALSE; |
733 | 771 | ||
734 | scaled_font->holdover = FALSE; |
772 | scaled_font->holdover = FALSE; |
735 | scaled_font->finished = FALSE; |
773 | scaled_font->finished = FALSE; |
736 | 774 | ||
737 | CAIRO_REFERENCE_COUNT_INIT (&scaled_font->ref_count, 1); |
775 | CAIRO_REFERENCE_COUNT_INIT (&scaled_font->ref_count, 1); |
738 | 776 | ||
739 | _cairo_user_data_array_init (&scaled_font->user_data); |
777 | _cairo_user_data_array_init (&scaled_font->user_data); |
740 | 778 | ||
741 | cairo_font_face_reference (font_face); |
779 | cairo_font_face_reference (font_face); |
742 | scaled_font->original_font_face = NULL; |
780 | scaled_font->original_font_face = NULL; |
743 | 781 | ||
744 | CAIRO_MUTEX_INIT (scaled_font->mutex); |
782 | CAIRO_MUTEX_INIT (scaled_font->mutex); |
745 | - | ||
746 | scaled_font->surface_backend = NULL; |
783 | |
747 | scaled_font->surface_private = NULL; |
784 | cairo_list_init (&scaled_font->dev_privates); |
748 | 785 | ||
749 | scaled_font->backend = backend; |
786 | scaled_font->backend = backend; |
750 | cairo_list_init (&scaled_font->link); |
787 | cairo_list_init (&scaled_font->link); |
751 | 788 | ||
752 | return CAIRO_STATUS_SUCCESS; |
789 | return CAIRO_STATUS_SUCCESS; |
753 | } |
790 | } |
754 | 791 | ||
755 | void |
792 | void |
756 | _cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font) |
793 | _cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font) |
757 | { |
794 | { |
758 | /* ensure we do not modify an error object */ |
795 | /* ensure we do not modify an error object */ |
759 | assert (scaled_font->status == CAIRO_STATUS_SUCCESS); |
796 | assert (scaled_font->status == CAIRO_STATUS_SUCCESS); |
760 | 797 | ||
761 | CAIRO_MUTEX_LOCK (scaled_font->mutex); |
798 | CAIRO_MUTEX_LOCK (scaled_font->mutex); |
762 | scaled_font->cache_frozen = TRUE; |
799 | scaled_font->cache_frozen = TRUE; |
763 | } |
800 | } |
764 | 801 | ||
765 | void |
802 | void |
766 | _cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font) |
803 | _cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font) |
767 | { |
804 | { |
768 | scaled_font->cache_frozen = FALSE; |
805 | assert (scaled_font->cache_frozen); |
769 | 806 | ||
770 | if (scaled_font->global_cache_frozen) { |
807 | if (scaled_font->global_cache_frozen) { |
771 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
808 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
772 | _cairo_cache_thaw (&cairo_scaled_glyph_page_cache); |
809 | _cairo_cache_thaw (&cairo_scaled_glyph_page_cache); |
773 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
810 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
774 | - | ||
775 | scaled_font->global_cache_frozen = FALSE; |
811 | scaled_font->global_cache_frozen = FALSE; |
776 | } |
812 | } |
- | 813 | ||
777 | 814 | scaled_font->cache_frozen = FALSE; |
|
778 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex); |
815 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex); |
779 | } |
816 | } |
780 | 817 | ||
781 | void |
818 | void |
782 | _cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font) |
819 | _cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font) |
783 | { |
820 | { |
- | 821 | CAIRO_MUTEX_LOCK (scaled_font->mutex); |
|
784 | assert (! scaled_font->cache_frozen); |
822 | assert (! scaled_font->cache_frozen); |
785 | - | ||
- | 823 | assert (! scaled_font->global_cache_frozen); |
|
786 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
824 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
787 | while (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
825 | while (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
788 | _cairo_cache_remove (&cairo_scaled_glyph_page_cache, |
826 | cairo_scaled_glyph_page_t *page = |
789 | &cairo_list_first_entry (&scaled_font->glyph_pages, |
827 | cairo_list_first_entry (&scaled_font->glyph_pages, |
790 | cairo_scaled_glyph_page_t, |
828 | cairo_scaled_glyph_page_t, |
- | 829 | link); |
|
- | 830 | ||
- | 831 | cairo_scaled_glyph_page_cache.size -= page->cache_entry.size; |
|
- | 832 | _cairo_hash_table_remove (cairo_scaled_glyph_page_cache.hash_table, |
|
791 | link)->cache_entry); |
833 | (cairo_hash_entry_t *) &page->cache_entry); |
- | 834 | ||
- | 835 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
|
792 | } |
836 | } |
793 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
837 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
- | 838 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex); |
|
794 | } |
839 | } |
795 | 840 | ||
796 | cairo_status_t |
841 | cairo_status_t |
797 | _cairo_scaled_font_set_metrics (cairo_scaled_font_t *scaled_font, |
842 | _cairo_scaled_font_set_metrics (cairo_scaled_font_t *scaled_font, |
798 | cairo_font_extents_t *fs_metrics) |
843 | cairo_font_extents_t *fs_metrics) |
799 | { |
844 | { |
800 | cairo_status_t status; |
845 | cairo_status_t status; |
801 | double font_scale_x, font_scale_y; |
846 | double font_scale_x, font_scale_y; |
802 | 847 | ||
803 | scaled_font->fs_extents = *fs_metrics; |
848 | scaled_font->fs_extents = *fs_metrics; |
804 | 849 | ||
805 | status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->font_matrix, |
850 | status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->font_matrix, |
806 | &font_scale_x, &font_scale_y, |
851 | &font_scale_x, &font_scale_y, |
807 | 1); |
852 | 1); |
808 | if (unlikely (status)) |
853 | if (unlikely (status)) |
809 | return status; |
854 | return status; |
810 | 855 | ||
811 | /* |
856 | /* |
812 | * The font responded in unscaled units, scale by the font |
857 | * The font responded in unscaled units, scale by the font |
813 | * matrix scale factors to get to user space |
858 | * matrix scale factors to get to user space |
814 | */ |
859 | */ |
815 | 860 | ||
816 | scaled_font->extents.ascent = fs_metrics->ascent * font_scale_y; |
861 | scaled_font->extents.ascent = fs_metrics->ascent * font_scale_y; |
817 | scaled_font->extents.descent = fs_metrics->descent * font_scale_y; |
862 | scaled_font->extents.descent = fs_metrics->descent * font_scale_y; |
818 | scaled_font->extents.height = fs_metrics->height * font_scale_y; |
863 | scaled_font->extents.height = fs_metrics->height * font_scale_y; |
819 | scaled_font->extents.max_x_advance = fs_metrics->max_x_advance * font_scale_x; |
864 | scaled_font->extents.max_x_advance = fs_metrics->max_x_advance * font_scale_x; |
820 | scaled_font->extents.max_y_advance = fs_metrics->max_y_advance * font_scale_y; |
865 | scaled_font->extents.max_y_advance = fs_metrics->max_y_advance * font_scale_y; |
821 | 866 | ||
822 | return CAIRO_STATUS_SUCCESS; |
867 | return CAIRO_STATUS_SUCCESS; |
823 | } |
868 | } |
824 | 869 | ||
825 | static void |
870 | static void |
826 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font) |
871 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font) |
827 | { |
872 | { |
- | 873 | assert (! scaled_font->cache_frozen); |
|
- | 874 | assert (! scaled_font->global_cache_frozen); |
|
828 | scaled_font->finished = TRUE; |
875 | scaled_font->finished = TRUE; |
829 | 876 | ||
830 | _cairo_scaled_font_reset_cache (scaled_font); |
877 | _cairo_scaled_font_reset_cache (scaled_font); |
831 | _cairo_hash_table_destroy (scaled_font->glyphs); |
878 | _cairo_hash_table_destroy (scaled_font->glyphs); |
832 | 879 | ||
833 | cairo_font_face_destroy (scaled_font->font_face); |
880 | cairo_font_face_destroy (scaled_font->font_face); |
834 | cairo_font_face_destroy (scaled_font->original_font_face); |
881 | cairo_font_face_destroy (scaled_font->original_font_face); |
835 | 882 | ||
836 | CAIRO_MUTEX_FINI (scaled_font->mutex); |
883 | CAIRO_MUTEX_FINI (scaled_font->mutex); |
- | 884 | ||
837 | 885 | while (! cairo_list_is_empty (&scaled_font->dev_privates)) { |
|
838 | if (scaled_font->surface_backend != NULL && |
886 | cairo_scaled_font_private_t *private = |
- | 887 | cairo_list_first_entry (&scaled_font->dev_privates, |
|
- | 888 | cairo_scaled_font_private_t, |
|
839 | scaled_font->surface_backend->scaled_font_fini != NULL) |
889 | link); |
- | 890 | private->destroy (private, scaled_font); |
|
840 | scaled_font->surface_backend->scaled_font_fini (scaled_font); |
891 | } |
841 | 892 | ||
842 | if (scaled_font->backend != NULL && scaled_font->backend->fini != NULL) |
893 | if (scaled_font->backend != NULL && scaled_font->backend->fini != NULL) |
843 | scaled_font->backend->fini (scaled_font); |
894 | scaled_font->backend->fini (scaled_font); |
844 | 895 | ||
845 | _cairo_user_data_array_fini (&scaled_font->user_data); |
896 | _cairo_user_data_array_fini (&scaled_font->user_data); |
846 | } |
897 | } |
847 | - | ||
848 | /* XXX: allow multiple backends to share the font */ |
- | |
849 | void |
- | |
850 | _cairo_scaled_font_revoke_ownership (cairo_scaled_font_t *scaled_font) |
- | |
851 | { |
- | |
852 | if (scaled_font->surface_backend == NULL) |
- | |
853 | return; |
- | |
854 | - | ||
855 | _cairo_scaled_font_reset_cache (scaled_font); |
- | |
856 | - | ||
857 | if (scaled_font->surface_backend->scaled_font_fini != NULL) |
- | |
858 | scaled_font->surface_backend->scaled_font_fini (scaled_font); |
- | |
859 | - | ||
860 | scaled_font->surface_backend = NULL; |
- | |
861 | scaled_font->surface_private = NULL; |
- | |
862 | } |
- | |
863 | 898 | ||
864 | void |
899 | void |
865 | _cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font) |
900 | _cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font) |
866 | { |
901 | { |
867 | /* Release the lock to avoid the possibility of a recursive |
902 | /* Release the lock to avoid the possibility of a recursive |
868 | * deadlock when the scaled font destroy closure gets called. */ |
903 | * deadlock when the scaled font destroy closure gets called. */ |
869 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
904 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex); |
870 | _cairo_scaled_font_fini_internal (scaled_font); |
905 | _cairo_scaled_font_fini_internal (scaled_font); |
871 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
906 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex); |
872 | } |
907 | } |
- | 908 | ||
- | 909 | void |
|
- | 910 | _cairo_scaled_font_attach_private (cairo_scaled_font_t *scaled_font, |
|
- | 911 | cairo_scaled_font_private_t *private, |
|
- | 912 | const void *key, |
|
- | 913 | void (*destroy) (cairo_scaled_font_private_t *, |
|
- | 914 | cairo_scaled_font_t *)) |
|
- | 915 | { |
|
- | 916 | private->key = key; |
|
- | 917 | private->destroy = destroy; |
|
- | 918 | cairo_list_add (&private->link, &scaled_font->dev_privates); |
|
- | 919 | } |
|
- | 920 | ||
- | 921 | cairo_scaled_font_private_t * |
|
- | 922 | _cairo_scaled_font_find_private (cairo_scaled_font_t *scaled_font, |
|
- | 923 | const void *key) |
|
- | 924 | { |
|
- | 925 | cairo_scaled_font_private_t *priv; |
|
- | 926 | ||
- | 927 | cairo_list_foreach_entry (priv, cairo_scaled_font_private_t, |
|
- | 928 | &scaled_font->dev_privates, link) |
|
- | 929 | { |
|
- | 930 | if (priv->key == key) { |
|
- | 931 | if (priv->link.prev != &scaled_font->dev_privates) |
|
- | 932 | cairo_list_move (&priv->link, &scaled_font->dev_privates); |
|
- | 933 | return priv; |
|
- | 934 | } |
|
- | 935 | } |
|
- | 936 | ||
- | 937 | return NULL; |
|
- | 938 | } |
|
- | 939 | ||
- | 940 | void |
|
- | 941 | _cairo_scaled_glyph_attach_private (cairo_scaled_glyph_t *scaled_glyph, |
|
- | 942 | cairo_scaled_glyph_private_t *private, |
|
- | 943 | const void *key, |
|
- | 944 | void (*destroy) (cairo_scaled_glyph_private_t *, |
|
- | 945 | cairo_scaled_glyph_t *, |
|
- | 946 | cairo_scaled_font_t *)) |
|
- | 947 | { |
|
- | 948 | private->key = key; |
|
- | 949 | private->destroy = destroy; |
|
- | 950 | cairo_list_add (&private->link, &scaled_glyph->dev_privates); |
|
- | 951 | } |
|
- | 952 | ||
- | 953 | cairo_scaled_glyph_private_t * |
|
- | 954 | _cairo_scaled_glyph_find_private (cairo_scaled_glyph_t *scaled_glyph, |
|
- | 955 | const void *key) |
|
- | 956 | { |
|
- | 957 | cairo_scaled_glyph_private_t *priv; |
|
- | 958 | ||
- | 959 | cairo_list_foreach_entry (priv, cairo_scaled_glyph_private_t, |
|
- | 960 | &scaled_glyph->dev_privates, link) |
|
- | 961 | { |
|
- | 962 | if (priv->key == key) { |
|
- | 963 | if (priv->link.prev != &scaled_glyph->dev_privates) |
|
- | 964 | cairo_list_move (&priv->link, &scaled_glyph->dev_privates); |
|
- | 965 | return priv; |
|
- | 966 | } |
|
- | 967 | } |
|
- | 968 | ||
- | 969 | return NULL; |
|
- | 970 | } |
|
873 | 971 | ||
874 | /** |
972 | /** |
875 | * cairo_scaled_font_create: |
973 | * cairo_scaled_font_create: |
876 | * @font_face: a #cairo_font_face_t |
974 | * @font_face: a #cairo_font_face_t |
877 | * @font_matrix: font space to user space transformation matrix for the |
975 | * @font_matrix: font space to user space transformation matrix for the |
878 | * font. In the simplest case of a N point font, this matrix is |
976 | * font. In the simplest case of a N point font, this matrix is |
879 | * just a scale by N, but it can also be used to shear the font |
977 | * just a scale by N, but it can also be used to shear the font |
880 | * or stretch it unequally along the two axes. See |
978 | * or stretch it unequally along the two axes. See |
881 | * cairo_set_font_matrix(). |
979 | * cairo_set_font_matrix(). |
882 | * @ctm: user to device transformation matrix with which the font will |
980 | * @ctm: user to device transformation matrix with which the font will |
883 | * be used. |
981 | * be used. |
884 | * @options: options to use when getting metrics for the font and |
982 | * @options: options to use when getting metrics for the font and |
885 | * rendering with it. |
983 | * rendering with it. |
886 | * |
984 | * |
887 | * Creates a #cairo_scaled_font_t object from a font face and matrices that |
985 | * Creates a #cairo_scaled_font_t object from a font face and matrices that |
888 | * describe the size of the font and the environment in which it will |
986 | * describe the size of the font and the environment in which it will |
889 | * be used. |
987 | * be used. |
890 | * |
988 | * |
891 | * Return value: a newly created #cairo_scaled_font_t. Destroy with |
989 | * Return value: a newly created #cairo_scaled_font_t. Destroy with |
892 | * cairo_scaled_font_destroy() |
990 | * cairo_scaled_font_destroy() |
- | 991 | * |
|
- | 992 | * Since: 1.0 |
|
893 | **/ |
993 | **/ |
894 | cairo_scaled_font_t * |
994 | cairo_scaled_font_t * |
895 | cairo_scaled_font_create (cairo_font_face_t *font_face, |
995 | cairo_scaled_font_create (cairo_font_face_t *font_face, |
896 | const cairo_matrix_t *font_matrix, |
996 | const cairo_matrix_t *font_matrix, |
897 | const cairo_matrix_t *ctm, |
997 | const cairo_matrix_t *ctm, |
898 | const cairo_font_options_t *options) |
998 | const cairo_font_options_t *options) |
899 | { |
999 | { |
900 | cairo_status_t status; |
1000 | cairo_status_t status; |
901 | cairo_scaled_font_map_t *font_map; |
1001 | cairo_scaled_font_map_t *font_map; |
902 | cairo_font_face_t *original_font_face = font_face; |
1002 | cairo_font_face_t *original_font_face = font_face; |
903 | cairo_scaled_font_t key, *old = NULL, *scaled_font = NULL, *dead = NULL; |
1003 | cairo_scaled_font_t key, *old = NULL, *scaled_font = NULL, *dead = NULL; |
904 | double det; |
1004 | double det; |
905 | 1005 | ||
906 | status = font_face->status; |
1006 | status = font_face->status; |
907 | if (unlikely (status)) |
1007 | if (unlikely (status)) |
908 | return _cairo_scaled_font_create_in_error (status); |
1008 | return _cairo_scaled_font_create_in_error (status); |
909 | 1009 | ||
910 | det = _cairo_matrix_compute_determinant (font_matrix); |
1010 | det = _cairo_matrix_compute_determinant (font_matrix); |
911 | if (! ISFINITE (det)) |
1011 | if (! ISFINITE (det)) |
912 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
1012 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
913 | 1013 | ||
914 | det = _cairo_matrix_compute_determinant (ctm); |
1014 | det = _cairo_matrix_compute_determinant (ctm); |
915 | if (! ISFINITE (det)) |
1015 | if (! ISFINITE (det)) |
916 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
1016 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
917 | 1017 | ||
918 | status = cairo_font_options_status ((cairo_font_options_t *) options); |
1018 | status = cairo_font_options_status ((cairo_font_options_t *) options); |
919 | if (unlikely (status)) |
1019 | if (unlikely (status)) |
920 | return _cairo_scaled_font_create_in_error (status); |
1020 | return _cairo_scaled_font_create_in_error (status); |
921 | 1021 | ||
922 | /* Note that degenerate ctm or font_matrix *are* allowed. |
1022 | /* Note that degenerate ctm or font_matrix *are* allowed. |
923 | * We want to support a font size of 0. */ |
1023 | * We want to support a font size of 0. */ |
924 | 1024 | ||
925 | font_map = _cairo_scaled_font_map_lock (); |
1025 | font_map = _cairo_scaled_font_map_lock (); |
926 | if (unlikely (font_map == NULL)) |
1026 | if (unlikely (font_map == NULL)) |
927 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); |
1027 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); |
928 | 1028 | ||
929 | scaled_font = font_map->mru_scaled_font; |
1029 | scaled_font = font_map->mru_scaled_font; |
930 | if (scaled_font != NULL && |
1030 | if (scaled_font != NULL && |
931 | _cairo_scaled_font_matches (scaled_font, |
1031 | _cairo_scaled_font_matches (scaled_font, |
932 | font_face, font_matrix, ctm, options)) |
1032 | font_face, font_matrix, ctm, options)) |
933 | { |
1033 | { |
934 | assert (scaled_font->hash_entry.hash != ZOMBIE); |
1034 | assert (scaled_font->hash_entry.hash != ZOMBIE); |
935 | assert (! scaled_font->placeholder); |
1035 | assert (! scaled_font->placeholder); |
936 | 1036 | ||
937 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) { |
1037 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) { |
938 | /* We increment the reference count manually here, (rather |
1038 | /* We increment the reference count manually here, (rather |
939 | * than calling into cairo_scaled_font_reference), since we |
1039 | * than calling into cairo_scaled_font_reference), since we |
940 | * must modify the reference count while our lock is still |
1040 | * must modify the reference count while our lock is still |
941 | * held. */ |
1041 | * held. */ |
942 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1042 | _cairo_reference_count_inc (&scaled_font->ref_count); |
943 | _cairo_scaled_font_map_unlock (); |
1043 | _cairo_scaled_font_map_unlock (); |
944 | return scaled_font; |
1044 | return scaled_font; |
945 | } |
1045 | } |
946 | 1046 | ||
947 | /* the font has been put into an error status - abandon the cache */ |
1047 | /* the font has been put into an error status - abandon the cache */ |
948 | _cairo_hash_table_remove (font_map->hash_table, |
1048 | _cairo_hash_table_remove (font_map->hash_table, |
949 | &scaled_font->hash_entry); |
1049 | &scaled_font->hash_entry); |
950 | scaled_font->hash_entry.hash = ZOMBIE; |
1050 | scaled_font->hash_entry.hash = ZOMBIE; |
951 | dead = scaled_font; |
1051 | dead = scaled_font; |
952 | font_map->mru_scaled_font = NULL; |
1052 | font_map->mru_scaled_font = NULL; |
953 | - | ||
954 | if (font_face->backend->get_implementation != NULL) { |
- | |
955 | font_face = font_face->backend->get_implementation (font_face, |
- | |
956 | font_matrix, |
- | |
957 | ctm, |
- | |
958 | options); |
- | |
959 | if (unlikely (font_face->status)) { |
- | |
960 | _cairo_scaled_font_map_unlock (); |
- | |
961 | cairo_scaled_font_destroy (scaled_font); |
- | |
962 | return _cairo_scaled_font_create_in_error (font_face->status); |
- | |
963 | } |
- | |
964 | } |
- | |
965 | - | ||
966 | _cairo_scaled_font_init_key (&key, font_face, |
- | |
967 | font_matrix, ctm, options); |
- | |
968 | } |
- | |
969 | else |
- | |
970 | { |
- | |
971 | if (font_face->backend->get_implementation != NULL) { |
- | |
972 | font_face = font_face->backend->get_implementation (font_face, |
- | |
973 | font_matrix, |
- | |
974 | ctm, |
- | |
975 | options); |
- | |
976 | if (unlikely (font_face->status)) { |
- | |
977 | _cairo_scaled_font_map_unlock (); |
- | |
978 | return _cairo_scaled_font_create_in_error (font_face->status); |
- | |
979 | } |
- | |
980 | } |
1053 | } |
981 | 1054 | ||
982 | _cairo_scaled_font_init_key (&key, font_face, |
- | |
983 | font_matrix, ctm, options); |
1055 | _cairo_scaled_font_init_key (&key, font_face, font_matrix, ctm, options); |
984 | 1056 | ||
985 | while ((scaled_font = _cairo_hash_table_lookup (font_map->hash_table, |
1057 | while ((scaled_font = _cairo_hash_table_lookup (font_map->hash_table, |
986 | &key.hash_entry))) |
1058 | &key.hash_entry))) |
987 | { |
1059 | { |
988 | if (! scaled_font->placeholder) |
1060 | if (! scaled_font->placeholder) |
989 | break; |
1061 | break; |
990 | 1062 | ||
991 | /* If the scaled font is being created (happens for user-font), |
1063 | /* If the scaled font is being created (happens for user-font), |
992 | * just wait until it's done, then retry */ |
1064 | * just wait until it's done, then retry */ |
993 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (scaled_font); |
1065 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (scaled_font); |
994 | } |
1066 | } |
995 | - | ||
996 | /* Return existing scaled_font if it exists in the hash table. */ |
1067 | |
997 | if (scaled_font != NULL) { |
1068 | if (scaled_font != NULL) { |
998 | /* If the original reference count is 0, then this font must have |
1069 | /* If the original reference count is 0, then this font must have |
999 | * been found in font_map->holdovers, (which means this caching is |
1070 | * been found in font_map->holdovers, (which means this caching is |
1000 | * actually working). So now we remove it from the holdovers |
1071 | * actually working). So now we remove it from the holdovers |
1001 | * array, unless we caught the font in the middle of destruction. |
1072 | * array, unless we caught the font in the middle of destruction. |
1002 | */ |
1073 | */ |
1003 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) { |
1074 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) { |
1004 | if (scaled_font->holdover) { |
1075 | if (scaled_font->holdover) { |
1005 | int i; |
1076 | int i; |
1006 | 1077 | ||
1007 | for (i = 0; i < font_map->num_holdovers; i++) { |
1078 | for (i = 0; i < font_map->num_holdovers; i++) { |
1008 | if (font_map->holdovers[i] == scaled_font) { |
1079 | if (font_map->holdovers[i] == scaled_font) { |
1009 | font_map->num_holdovers--; |
1080 | font_map->num_holdovers--; |
1010 | memmove (&font_map->holdovers[i], |
1081 | memmove (&font_map->holdovers[i], |
1011 | &font_map->holdovers[i+1], |
1082 | &font_map->holdovers[i+1], |
1012 | (font_map->num_holdovers - i) * sizeof (cairo_scaled_font_t*)); |
1083 | (font_map->num_holdovers - i) * sizeof (cairo_scaled_font_t*)); |
1013 | break; |
1084 | break; |
1014 | } |
1085 | } |
1015 | } |
1086 | } |
1016 | 1087 | ||
1017 | scaled_font->holdover = FALSE; |
1088 | scaled_font->holdover = FALSE; |
1018 | } |
1089 | } |
1019 | 1090 | ||
1020 | /* reset any error status */ |
1091 | /* reset any error status */ |
1021 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
1092 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
1022 | } |
1093 | } |
1023 | 1094 | ||
1024 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) { |
1095 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) { |
1025 | /* We increment the reference count manually here, (rather |
1096 | /* We increment the reference count manually here, (rather |
1026 | * than calling into cairo_scaled_font_reference), since we |
1097 | * than calling into cairo_scaled_font_reference), since we |
1027 | * must modify the reference count while our lock is still |
1098 | * must modify the reference count while our lock is still |
1028 | * held. */ |
1099 | * held. */ |
1029 | 1100 | ||
1030 | old = font_map->mru_scaled_font; |
1101 | old = font_map->mru_scaled_font; |
1031 | font_map->mru_scaled_font = scaled_font; |
1102 | font_map->mru_scaled_font = scaled_font; |
1032 | /* increment reference count for the mru cache */ |
1103 | /* increment reference count for the mru cache */ |
1033 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1104 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1034 | /* and increment for the returned reference */ |
1105 | /* and increment for the returned reference */ |
1035 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1106 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1036 | _cairo_scaled_font_map_unlock (); |
1107 | _cairo_scaled_font_map_unlock (); |
1037 | 1108 | ||
1038 | cairo_scaled_font_destroy (old); |
1109 | cairo_scaled_font_destroy (old); |
1039 | if (font_face != original_font_face) |
1110 | if (font_face != original_font_face) |
1040 | cairo_font_face_destroy (font_face); |
1111 | cairo_font_face_destroy (font_face); |
1041 | 1112 | ||
1042 | return scaled_font; |
1113 | return scaled_font; |
1043 | } |
1114 | } |
1044 | 1115 | ||
1045 | /* the font has been put into an error status - abandon the cache */ |
1116 | /* the font has been put into an error status - abandon the cache */ |
1046 | _cairo_hash_table_remove (font_map->hash_table, |
1117 | _cairo_hash_table_remove (font_map->hash_table, |
1047 | &scaled_font->hash_entry); |
1118 | &scaled_font->hash_entry); |
1048 | scaled_font->hash_entry.hash = ZOMBIE; |
1119 | scaled_font->hash_entry.hash = ZOMBIE; |
1049 | } |
1120 | } |
1050 | } |
1121 | |
1051 | 1122 | ||
- | 1123 | /* Otherwise create it and insert it into the hash table. */ |
|
- | 1124 | if (font_face->backend->get_implementation != NULL) { |
|
- | 1125 | font_face = font_face->backend->get_implementation (font_face, |
|
- | 1126 | font_matrix, |
|
- | 1127 | ctm, |
|
- | 1128 | options); |
|
- | 1129 | if (unlikely (font_face->status)) { |
|
- | 1130 | _cairo_scaled_font_map_unlock (); |
|
- | 1131 | return _cairo_scaled_font_create_in_error (font_face->status); |
|
- | 1132 | } |
|
- | 1133 | } |
|
1052 | /* Otherwise create it and insert it into the hash table. */ |
1134 | |
1053 | status = font_face->backend->scaled_font_create (font_face, font_matrix, |
1135 | status = font_face->backend->scaled_font_create (font_face, font_matrix, |
1054 | ctm, options, &scaled_font); |
1136 | ctm, options, &scaled_font); |
1055 | /* Did we leave the backend in an error state? */ |
1137 | /* Did we leave the backend in an error state? */ |
1056 | if (unlikely (status)) { |
1138 | if (unlikely (status)) { |
1057 | _cairo_scaled_font_map_unlock (); |
1139 | _cairo_scaled_font_map_unlock (); |
1058 | if (font_face != original_font_face) |
1140 | if (font_face != original_font_face) |
1059 | cairo_font_face_destroy (font_face); |
1141 | cairo_font_face_destroy (font_face); |
1060 | 1142 | ||
1061 | if (dead != NULL) |
1143 | if (dead != NULL) |
1062 | cairo_scaled_font_destroy (dead); |
1144 | cairo_scaled_font_destroy (dead); |
1063 | 1145 | ||
1064 | status = _cairo_font_face_set_error (font_face, status); |
1146 | status = _cairo_font_face_set_error (font_face, status); |
1065 | return _cairo_scaled_font_create_in_error (status); |
1147 | return _cairo_scaled_font_create_in_error (status); |
1066 | } |
1148 | } |
1067 | /* Or did we encounter an error whilst constructing the scaled font? */ |
1149 | /* Or did we encounter an error whilst constructing the scaled font? */ |
1068 | if (unlikely (scaled_font->status)) { |
1150 | if (unlikely (scaled_font->status)) { |
1069 | _cairo_scaled_font_map_unlock (); |
1151 | _cairo_scaled_font_map_unlock (); |
1070 | if (font_face != original_font_face) |
1152 | if (font_face != original_font_face) |
1071 | cairo_font_face_destroy (font_face); |
1153 | cairo_font_face_destroy (font_face); |
1072 | 1154 | ||
1073 | if (dead != NULL) |
1155 | if (dead != NULL) |
1074 | cairo_scaled_font_destroy (dead); |
1156 | cairo_scaled_font_destroy (dead); |
1075 | 1157 | ||
1076 | return scaled_font; |
1158 | return scaled_font; |
1077 | } |
1159 | } |
1078 | 1160 | ||
1079 | /* Our caching above is defeated if the backend switches fonts on us - |
1161 | /* Our caching above is defeated if the backend switches fonts on us - |
1080 | * e.g. old incarnations of toy-font-face and lazily resolved |
1162 | * e.g. old incarnations of toy-font-face and lazily resolved |
1081 | * ft-font-faces |
1163 | * ft-font-faces |
1082 | */ |
1164 | */ |
1083 | assert (scaled_font->font_face == font_face); |
1165 | assert (scaled_font->font_face == font_face); |
- | 1166 | assert (! scaled_font->cache_frozen); |
|
- | 1167 | assert (! scaled_font->global_cache_frozen); |
|
1084 | 1168 | ||
1085 | scaled_font->original_font_face = |
1169 | scaled_font->original_font_face = |
1086 | cairo_font_face_reference (original_font_face); |
1170 | cairo_font_face_reference (original_font_face); |
- | 1171 | ||
- | 1172 | scaled_font->hash_entry.hash = _cairo_scaled_font_compute_hash(scaled_font); |
|
1087 | 1173 | ||
1088 | status = _cairo_hash_table_insert (font_map->hash_table, |
1174 | status = _cairo_hash_table_insert (font_map->hash_table, |
1089 | &scaled_font->hash_entry); |
1175 | &scaled_font->hash_entry); |
1090 | if (likely (status == CAIRO_STATUS_SUCCESS)) { |
1176 | if (likely (status == CAIRO_STATUS_SUCCESS)) { |
1091 | old = font_map->mru_scaled_font; |
1177 | old = font_map->mru_scaled_font; |
1092 | font_map->mru_scaled_font = scaled_font; |
1178 | font_map->mru_scaled_font = scaled_font; |
1093 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1179 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1094 | } |
1180 | } |
1095 | 1181 | ||
1096 | _cairo_scaled_font_map_unlock (); |
1182 | _cairo_scaled_font_map_unlock (); |
1097 | 1183 | ||
1098 | cairo_scaled_font_destroy (old); |
1184 | cairo_scaled_font_destroy (old); |
1099 | if (font_face != original_font_face) |
1185 | if (font_face != original_font_face) |
1100 | cairo_font_face_destroy (font_face); |
1186 | cairo_font_face_destroy (font_face); |
1101 | 1187 | ||
1102 | if (dead != NULL) |
1188 | if (dead != NULL) |
1103 | cairo_scaled_font_destroy (dead); |
1189 | cairo_scaled_font_destroy (dead); |
1104 | 1190 | ||
1105 | if (unlikely (status)) { |
1191 | if (unlikely (status)) { |
1106 | /* We can't call _cairo_scaled_font_destroy here since it expects |
1192 | /* We can't call _cairo_scaled_font_destroy here since it expects |
1107 | * that the font has already been successfully inserted into the |
1193 | * that the font has already been successfully inserted into the |
1108 | * hash table. */ |
1194 | * hash table. */ |
1109 | _cairo_scaled_font_fini_internal (scaled_font); |
1195 | _cairo_scaled_font_fini_internal (scaled_font); |
1110 | free (scaled_font); |
1196 | free (scaled_font); |
1111 | return _cairo_scaled_font_create_in_error (status); |
1197 | return _cairo_scaled_font_create_in_error (status); |
1112 | } |
1198 | } |
1113 | 1199 | ||
1114 | return scaled_font; |
1200 | return scaled_font; |
1115 | } |
1201 | } |
1116 | slim_hidden_def (cairo_scaled_font_create); |
1202 | slim_hidden_def (cairo_scaled_font_create); |
1117 | 1203 | ||
1118 | static cairo_scaled_font_t *_cairo_scaled_font_nil_objects[CAIRO_STATUS_LAST_STATUS + 1]; |
1204 | static cairo_scaled_font_t *_cairo_scaled_font_nil_objects[CAIRO_STATUS_LAST_STATUS + 1]; |
1119 | 1205 | ||
1120 | /* XXX This should disappear in favour of a common pool of error objects. */ |
1206 | /* XXX This should disappear in favour of a common pool of error objects. */ |
1121 | cairo_scaled_font_t * |
1207 | cairo_scaled_font_t * |
1122 | _cairo_scaled_font_create_in_error (cairo_status_t status) |
1208 | _cairo_scaled_font_create_in_error (cairo_status_t status) |
1123 | { |
1209 | { |
1124 | cairo_scaled_font_t *scaled_font; |
1210 | cairo_scaled_font_t *scaled_font; |
1125 | 1211 | ||
1126 | assert (status != CAIRO_STATUS_SUCCESS); |
1212 | assert (status != CAIRO_STATUS_SUCCESS); |
1127 | 1213 | ||
1128 | if (status == CAIRO_STATUS_NO_MEMORY) |
1214 | if (status == CAIRO_STATUS_NO_MEMORY) |
1129 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
1215 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
1130 | 1216 | ||
1131 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex); |
1217 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex); |
1132 | scaled_font = _cairo_scaled_font_nil_objects[status]; |
1218 | scaled_font = _cairo_scaled_font_nil_objects[status]; |
1133 | if (unlikely (scaled_font == NULL)) { |
1219 | if (unlikely (scaled_font == NULL)) { |
1134 | scaled_font = malloc (sizeof (cairo_scaled_font_t)); |
1220 | scaled_font = malloc (sizeof (cairo_scaled_font_t)); |
1135 | if (unlikely (scaled_font == NULL)) { |
1221 | if (unlikely (scaled_font == NULL)) { |
1136 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1222 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1137 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); |
1223 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); |
1138 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
1224 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
1139 | } |
1225 | } |
1140 | 1226 | ||
1141 | *scaled_font = _cairo_scaled_font_nil; |
1227 | *scaled_font = _cairo_scaled_font_nil; |
1142 | scaled_font->status = status; |
1228 | scaled_font->status = status; |
1143 | _cairo_scaled_font_nil_objects[status] = scaled_font; |
1229 | _cairo_scaled_font_nil_objects[status] = scaled_font; |
1144 | } |
1230 | } |
1145 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1231 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1146 | 1232 | ||
1147 | return scaled_font; |
1233 | return scaled_font; |
1148 | } |
1234 | } |
1149 | 1235 | ||
1150 | void |
1236 | void |
1151 | _cairo_scaled_font_reset_static_data (void) |
1237 | _cairo_scaled_font_reset_static_data (void) |
1152 | { |
1238 | { |
1153 | int status; |
1239 | int status; |
1154 | 1240 | ||
1155 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex); |
1241 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex); |
1156 | for (status = CAIRO_STATUS_SUCCESS; |
1242 | for (status = CAIRO_STATUS_SUCCESS; |
1157 | status <= CAIRO_STATUS_LAST_STATUS; |
1243 | status <= CAIRO_STATUS_LAST_STATUS; |
1158 | status++) |
1244 | status++) |
1159 | { |
1245 | { |
1160 | if (_cairo_scaled_font_nil_objects[status] != NULL) { |
- | |
1161 | free (_cairo_scaled_font_nil_objects[status]); |
1246 | free (_cairo_scaled_font_nil_objects[status]); |
1162 | _cairo_scaled_font_nil_objects[status] = NULL; |
1247 | _cairo_scaled_font_nil_objects[status] = NULL; |
1163 | } |
1248 | } |
1164 | } |
- | |
1165 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1249 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex); |
1166 | 1250 | ||
1167 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
1251 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
1168 | if (cairo_scaled_glyph_page_cache.hash_table != NULL) { |
1252 | if (cairo_scaled_glyph_page_cache.hash_table != NULL) { |
1169 | _cairo_cache_fini (&cairo_scaled_glyph_page_cache); |
1253 | _cairo_cache_fini (&cairo_scaled_glyph_page_cache); |
1170 | cairo_scaled_glyph_page_cache.hash_table = NULL; |
1254 | cairo_scaled_glyph_page_cache.hash_table = NULL; |
1171 | } |
1255 | } |
1172 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
1256 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
1173 | } |
1257 | } |
1174 | 1258 | ||
1175 | /** |
1259 | /** |
1176 | * cairo_scaled_font_reference: |
1260 | * cairo_scaled_font_reference: |
1177 | * @scaled_font: a #cairo_scaled_font_t, (may be %NULL in which case |
1261 | * @scaled_font: a #cairo_scaled_font_t, (may be %NULL in which case |
1178 | * this function does nothing) |
1262 | * this function does nothing) |
1179 | * |
1263 | * |
1180 | * Increases the reference count on @scaled_font by one. This prevents |
1264 | * Increases the reference count on @scaled_font by one. This prevents |
1181 | * @scaled_font from being destroyed until a matching call to |
1265 | * @scaled_font from being destroyed until a matching call to |
1182 | * cairo_scaled_font_destroy() is made. |
1266 | * cairo_scaled_font_destroy() is made. |
1183 | * |
1267 | * |
1184 | * The number of references to a #cairo_scaled_font_t can be get using |
1268 | * The number of references to a #cairo_scaled_font_t can be get using |
1185 | * cairo_scaled_font_get_reference_count(). |
1269 | * cairo_scaled_font_get_reference_count(). |
1186 | * |
1270 | * |
1187 | * Returns: the referenced #cairo_scaled_font_t |
1271 | * Returns: the referenced #cairo_scaled_font_t |
- | 1272 | * |
|
- | 1273 | * Since: 1.0 |
|
1188 | **/ |
1274 | **/ |
1189 | cairo_scaled_font_t * |
1275 | cairo_scaled_font_t * |
1190 | cairo_scaled_font_reference (cairo_scaled_font_t *scaled_font) |
1276 | cairo_scaled_font_reference (cairo_scaled_font_t *scaled_font) |
1191 | { |
1277 | { |
1192 | if (scaled_font == NULL || |
1278 | if (scaled_font == NULL || |
1193 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1279 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1194 | return scaled_font; |
1280 | return scaled_font; |
1195 | 1281 | ||
1196 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
1282 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
1197 | 1283 | ||
1198 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1284 | _cairo_reference_count_inc (&scaled_font->ref_count); |
1199 | 1285 | ||
1200 | return scaled_font; |
1286 | return scaled_font; |
1201 | } |
1287 | } |
1202 | slim_hidden_def (cairo_scaled_font_reference); |
1288 | slim_hidden_def (cairo_scaled_font_reference); |
1203 | 1289 | ||
1204 | /** |
1290 | /** |
1205 | * cairo_scaled_font_destroy: |
1291 | * cairo_scaled_font_destroy: |
1206 | * @scaled_font: a #cairo_scaled_font_t |
1292 | * @scaled_font: a #cairo_scaled_font_t |
1207 | * |
1293 | * |
1208 | * Decreases the reference count on @font by one. If the result |
1294 | * Decreases the reference count on @font by one. If the result |
1209 | * is zero, then @font and all associated resources are freed. |
1295 | * is zero, then @font and all associated resources are freed. |
1210 | * See cairo_scaled_font_reference(). |
1296 | * See cairo_scaled_font_reference(). |
- | 1297 | * |
|
- | 1298 | * Since: 1.0 |
|
1211 | **/ |
1299 | **/ |
1212 | void |
1300 | void |
1213 | cairo_scaled_font_destroy (cairo_scaled_font_t *scaled_font) |
1301 | cairo_scaled_font_destroy (cairo_scaled_font_t *scaled_font) |
1214 | { |
1302 | { |
1215 | cairo_scaled_font_t *lru = NULL; |
1303 | cairo_scaled_font_t *lru = NULL; |
1216 | cairo_scaled_font_map_t *font_map; |
1304 | cairo_scaled_font_map_t *font_map; |
1217 | 1305 | ||
1218 | assert (CAIRO_MUTEX_IS_UNLOCKED (_cairo_scaled_font_map_mutex)); |
1306 | assert (CAIRO_MUTEX_IS_UNLOCKED (_cairo_scaled_font_map_mutex)); |
1219 | 1307 | ||
1220 | if (scaled_font == NULL || |
1308 | if (scaled_font == NULL || |
1221 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1309 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1222 | return; |
1310 | return; |
1223 | 1311 | ||
1224 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
1312 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)); |
1225 | 1313 | ||
1226 | if (! _cairo_reference_count_dec_and_test (&scaled_font->ref_count)) |
1314 | if (! _cairo_reference_count_dec_and_test (&scaled_font->ref_count)) |
1227 | return; |
1315 | return; |
- | 1316 | ||
- | 1317 | assert (! scaled_font->cache_frozen); |
|
- | 1318 | assert (! scaled_font->global_cache_frozen); |
|
1228 | 1319 | ||
1229 | font_map = _cairo_scaled_font_map_lock (); |
1320 | font_map = _cairo_scaled_font_map_lock (); |
1230 | assert (font_map != NULL); |
1321 | assert (font_map != NULL); |
1231 | 1322 | ||
1232 | /* Another thread may have resurrected the font whilst we waited */ |
1323 | /* Another thread may have resurrected the font whilst we waited */ |
1233 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) { |
1324 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) { |
1234 | if (! scaled_font->placeholder && |
1325 | if (! scaled_font->placeholder && |
1235 | scaled_font->hash_entry.hash != ZOMBIE) |
1326 | scaled_font->hash_entry.hash != ZOMBIE) |
1236 | { |
1327 | { |
1237 | /* Another thread may have already inserted us into the holdovers */ |
1328 | /* Another thread may have already inserted us into the holdovers */ |
1238 | if (scaled_font->holdover) |
1329 | if (scaled_font->holdover) |
1239 | goto unlock; |
1330 | goto unlock; |
1240 | 1331 | ||
1241 | /* Rather than immediately destroying this object, we put it into |
1332 | /* Rather than immediately destroying this object, we put it into |
1242 | * the font_map->holdovers array in case it will get used again |
1333 | * the font_map->holdovers array in case it will get used again |
1243 | * soon (and is why we must hold the lock over the atomic op on |
1334 | * soon (and is why we must hold the lock over the atomic op on |
1244 | * the reference count). To make room for it, we do actually |
1335 | * the reference count). To make room for it, we do actually |
1245 | * destroy the least-recently-used holdover. |
1336 | * destroy the least-recently-used holdover. |
1246 | */ |
1337 | */ |
1247 | 1338 | ||
1248 | if (font_map->num_holdovers == CAIRO_SCALED_FONT_MAX_HOLDOVERS) { |
1339 | if (font_map->num_holdovers == CAIRO_SCALED_FONT_MAX_HOLDOVERS) { |
1249 | lru = font_map->holdovers[0]; |
1340 | lru = font_map->holdovers[0]; |
1250 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&lru->ref_count)); |
1341 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&lru->ref_count)); |
1251 | 1342 | ||
1252 | _cairo_hash_table_remove (font_map->hash_table, |
1343 | _cairo_hash_table_remove (font_map->hash_table, |
1253 | &lru->hash_entry); |
1344 | &lru->hash_entry); |
1254 | 1345 | ||
1255 | font_map->num_holdovers--; |
1346 | font_map->num_holdovers--; |
1256 | memmove (&font_map->holdovers[0], |
1347 | memmove (&font_map->holdovers[0], |
1257 | &font_map->holdovers[1], |
1348 | &font_map->holdovers[1], |
1258 | font_map->num_holdovers * sizeof (cairo_scaled_font_t*)); |
1349 | font_map->num_holdovers * sizeof (cairo_scaled_font_t*)); |
1259 | } |
1350 | } |
1260 | 1351 | ||
1261 | font_map->holdovers[font_map->num_holdovers++] = scaled_font; |
1352 | font_map->holdovers[font_map->num_holdovers++] = scaled_font; |
1262 | scaled_font->holdover = TRUE; |
1353 | scaled_font->holdover = TRUE; |
1263 | } else |
1354 | } else |
1264 | lru = scaled_font; |
1355 | lru = scaled_font; |
1265 | } |
1356 | } |
1266 | 1357 | ||
1267 | unlock: |
1358 | unlock: |
1268 | _cairo_scaled_font_map_unlock (); |
1359 | _cairo_scaled_font_map_unlock (); |
1269 | 1360 | ||
1270 | /* If we pulled an item from the holdovers array, (while the font |
1361 | /* If we pulled an item from the holdovers array, (while the font |
1271 | * map lock was held, of course), then there is no way that anyone |
1362 | * map lock was held, of course), then there is no way that anyone |
1272 | * else could have acquired a reference to it. So we can now |
1363 | * else could have acquired a reference to it. So we can now |
1273 | * safely call fini on it without any lock held. This is desirable |
1364 | * safely call fini on it without any lock held. This is desirable |
1274 | * as we never want to call into any backend function with a lock |
1365 | * as we never want to call into any backend function with a lock |
1275 | * held. */ |
1366 | * held. */ |
1276 | if (lru != NULL) { |
1367 | if (lru != NULL) { |
1277 | _cairo_scaled_font_fini_internal (lru); |
1368 | _cairo_scaled_font_fini_internal (lru); |
1278 | free (lru); |
1369 | free (lru); |
1279 | } |
1370 | } |
1280 | } |
1371 | } |
1281 | slim_hidden_def (cairo_scaled_font_destroy); |
1372 | slim_hidden_def (cairo_scaled_font_destroy); |
1282 | 1373 | ||
1283 | /** |
1374 | /** |
1284 | * cairo_scaled_font_get_reference_count: |
1375 | * cairo_scaled_font_get_reference_count: |
1285 | * @scaled_font: a #cairo_scaled_font_t |
1376 | * @scaled_font: a #cairo_scaled_font_t |
1286 | * |
1377 | * |
1287 | * Returns the current reference count of @scaled_font. |
1378 | * Returns the current reference count of @scaled_font. |
1288 | * |
1379 | * |
1289 | * Return value: the current reference count of @scaled_font. If the |
1380 | * Return value: the current reference count of @scaled_font. If the |
1290 | * object is a nil object, 0 will be returned. |
1381 | * object is a nil object, 0 will be returned. |
1291 | * |
1382 | * |
1292 | * Since: 1.4 |
1383 | * Since: 1.4 |
1293 | **/ |
1384 | **/ |
1294 | unsigned int |
1385 | unsigned int |
1295 | cairo_scaled_font_get_reference_count (cairo_scaled_font_t *scaled_font) |
1386 | cairo_scaled_font_get_reference_count (cairo_scaled_font_t *scaled_font) |
1296 | { |
1387 | { |
1297 | if (scaled_font == NULL || |
1388 | if (scaled_font == NULL || |
1298 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1389 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1299 | return 0; |
1390 | return 0; |
1300 | 1391 | ||
1301 | return CAIRO_REFERENCE_COUNT_GET_VALUE (&scaled_font->ref_count); |
1392 | return CAIRO_REFERENCE_COUNT_GET_VALUE (&scaled_font->ref_count); |
1302 | } |
1393 | } |
1303 | 1394 | ||
1304 | /** |
1395 | /** |
1305 | * cairo_scaled_font_get_user_data: |
1396 | * cairo_scaled_font_get_user_data: |
1306 | * @scaled_font: a #cairo_scaled_font_t |
1397 | * @scaled_font: a #cairo_scaled_font_t |
1307 | * @key: the address of the #cairo_user_data_key_t the user data was |
1398 | * @key: the address of the #cairo_user_data_key_t the user data was |
1308 | * attached to |
1399 | * attached to |
1309 | * |
1400 | * |
1310 | * Return user data previously attached to @scaled_font using the |
1401 | * Return user data previously attached to @scaled_font using the |
1311 | * specified key. If no user data has been attached with the given |
1402 | * specified key. If no user data has been attached with the given |
1312 | * key this function returns %NULL. |
1403 | * key this function returns %NULL. |
1313 | * |
1404 | * |
1314 | * Return value: the user data previously attached or %NULL. |
1405 | * Return value: the user data previously attached or %NULL. |
1315 | * |
1406 | * |
1316 | * Since: 1.4 |
1407 | * Since: 1.4 |
1317 | **/ |
1408 | **/ |
1318 | void * |
1409 | void * |
1319 | cairo_scaled_font_get_user_data (cairo_scaled_font_t *scaled_font, |
1410 | cairo_scaled_font_get_user_data (cairo_scaled_font_t *scaled_font, |
1320 | const cairo_user_data_key_t *key) |
1411 | const cairo_user_data_key_t *key) |
1321 | { |
1412 | { |
1322 | return _cairo_user_data_array_get_data (&scaled_font->user_data, |
1413 | return _cairo_user_data_array_get_data (&scaled_font->user_data, |
1323 | key); |
1414 | key); |
1324 | } |
1415 | } |
1325 | slim_hidden_def (cairo_scaled_font_get_user_data); |
1416 | slim_hidden_def (cairo_scaled_font_get_user_data); |
1326 | 1417 | ||
1327 | /** |
1418 | /** |
1328 | * cairo_scaled_font_set_user_data: |
1419 | * cairo_scaled_font_set_user_data: |
1329 | * @scaled_font: a #cairo_scaled_font_t |
1420 | * @scaled_font: a #cairo_scaled_font_t |
1330 | * @key: the address of a #cairo_user_data_key_t to attach the user data to |
1421 | * @key: the address of a #cairo_user_data_key_t to attach the user data to |
1331 | * @user_data: the user data to attach to the #cairo_scaled_font_t |
1422 | * @user_data: the user data to attach to the #cairo_scaled_font_t |
1332 | * @destroy: a #cairo_destroy_func_t which will be called when the |
1423 | * @destroy: a #cairo_destroy_func_t which will be called when the |
1333 | * #cairo_t is destroyed or when new user data is attached using the |
1424 | * #cairo_t is destroyed or when new user data is attached using the |
1334 | * same key. |
1425 | * same key. |
1335 | * |
1426 | * |
1336 | * Attach user data to @scaled_font. To remove user data from a surface, |
1427 | * Attach user data to @scaled_font. To remove user data from a surface, |
1337 | * call this function with the key that was used to set it and %NULL |
1428 | * call this function with the key that was used to set it and %NULL |
1338 | * for @data. |
1429 | * for @data. |
1339 | * |
1430 | * |
1340 | * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a |
1431 | * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a |
1341 | * slot could not be allocated for the user data. |
1432 | * slot could not be allocated for the user data. |
1342 | * |
1433 | * |
1343 | * Since: 1.4 |
1434 | * Since: 1.4 |
1344 | **/ |
1435 | **/ |
1345 | cairo_status_t |
1436 | cairo_status_t |
1346 | cairo_scaled_font_set_user_data (cairo_scaled_font_t *scaled_font, |
1437 | cairo_scaled_font_set_user_data (cairo_scaled_font_t *scaled_font, |
1347 | const cairo_user_data_key_t *key, |
1438 | const cairo_user_data_key_t *key, |
1348 | void *user_data, |
1439 | void *user_data, |
1349 | cairo_destroy_func_t destroy) |
1440 | cairo_destroy_func_t destroy) |
1350 | { |
1441 | { |
1351 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1442 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)) |
1352 | return scaled_font->status; |
1443 | return scaled_font->status; |
1353 | 1444 | ||
1354 | return _cairo_user_data_array_set_data (&scaled_font->user_data, |
1445 | return _cairo_user_data_array_set_data (&scaled_font->user_data, |
1355 | key, user_data, destroy); |
1446 | key, user_data, destroy); |
1356 | } |
1447 | } |
1357 | slim_hidden_def (cairo_scaled_font_set_user_data); |
1448 | slim_hidden_def (cairo_scaled_font_set_user_data); |
1358 | 1449 | ||
1359 | /* Public font API follows. */ |
1450 | /* Public font API follows. */ |
1360 | 1451 | ||
1361 | /** |
1452 | /** |
1362 | * cairo_scaled_font_extents: |
1453 | * cairo_scaled_font_extents: |
1363 | * @scaled_font: a #cairo_scaled_font_t |
1454 | * @scaled_font: a #cairo_scaled_font_t |
1364 | * @extents: a #cairo_font_extents_t which to store the retrieved extents. |
1455 | * @extents: a #cairo_font_extents_t which to store the retrieved extents. |
1365 | * |
1456 | * |
1366 | * Gets the metrics for a #cairo_scaled_font_t. |
1457 | * Gets the metrics for a #cairo_scaled_font_t. |
- | 1458 | * |
|
- | 1459 | * Since: 1.0 |
|
1367 | **/ |
1460 | **/ |
1368 | void |
1461 | void |
1369 | cairo_scaled_font_extents (cairo_scaled_font_t *scaled_font, |
1462 | cairo_scaled_font_extents (cairo_scaled_font_t *scaled_font, |
1370 | cairo_font_extents_t *extents) |
1463 | cairo_font_extents_t *extents) |
1371 | { |
1464 | { |
1372 | if (scaled_font->status) { |
1465 | if (scaled_font->status) { |
1373 | extents->ascent = 0.0; |
1466 | extents->ascent = 0.0; |
1374 | extents->descent = 0.0; |
1467 | extents->descent = 0.0; |
1375 | extents->height = 0.0; |
1468 | extents->height = 0.0; |
1376 | extents->max_x_advance = 0.0; |
1469 | extents->max_x_advance = 0.0; |
1377 | extents->max_y_advance = 0.0; |
1470 | extents->max_y_advance = 0.0; |
1378 | return; |
1471 | return; |
1379 | } |
1472 | } |
1380 | 1473 | ||
1381 | *extents = scaled_font->extents; |
1474 | *extents = scaled_font->extents; |
1382 | } |
1475 | } |
1383 | slim_hidden_def (cairo_scaled_font_extents); |
1476 | slim_hidden_def (cairo_scaled_font_extents); |
1384 | 1477 | ||
1385 | /** |
1478 | /** |
1386 | * cairo_scaled_font_text_extents: |
1479 | * cairo_scaled_font_text_extents: |
1387 | * @scaled_font: a #cairo_scaled_font_t |
1480 | * @scaled_font: a #cairo_scaled_font_t |
1388 | * @utf8: a NUL-terminated string of text, encoded in UTF-8 |
1481 | * @utf8: a NUL-terminated string of text, encoded in UTF-8 |
1389 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
1482 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
1390 | * |
1483 | * |
1391 | * Gets the extents for a string of text. The extents describe a |
1484 | * Gets the extents for a string of text. The extents describe a |
1392 | * user-space rectangle that encloses the "inked" portion of the text |
1485 | * user-space rectangle that encloses the "inked" portion of the text |
1393 | * drawn at the origin (0,0) (as it would be drawn by cairo_show_text() |
1486 | * drawn at the origin (0,0) (as it would be drawn by cairo_show_text() |
1394 | * if the cairo graphics state were set to the same font_face, |
1487 | * if the cairo graphics state were set to the same font_face, |
1395 | * font_matrix, ctm, and font_options as @scaled_font). Additionally, |
1488 | * font_matrix, ctm, and font_options as @scaled_font). Additionally, |
1396 | * the x_advance and y_advance values indicate the amount by which the |
1489 | * the x_advance and y_advance values indicate the amount by which the |
1397 | * current point would be advanced by cairo_show_text(). |
1490 | * current point would be advanced by cairo_show_text(). |
1398 | * |
1491 | * |
1399 | * Note that whitespace characters do not directly contribute to the |
1492 | * Note that whitespace characters do not directly contribute to the |
1400 | * size of the rectangle (extents.width and extents.height). They do |
1493 | * size of the rectangle (extents.width and extents.height). They do |
1401 | * contribute indirectly by changing the position of non-whitespace |
1494 | * contribute indirectly by changing the position of non-whitespace |
1402 | * characters. In particular, trailing whitespace characters are |
1495 | * characters. In particular, trailing whitespace characters are |
1403 | * likely to not affect the size of the rectangle, though they will |
1496 | * likely to not affect the size of the rectangle, though they will |
1404 | * affect the x_advance and y_advance values. |
1497 | * affect the x_advance and y_advance values. |
1405 | * |
1498 | * |
1406 | * Since: 1.2 |
1499 | * Since: 1.2 |
1407 | **/ |
1500 | **/ |
1408 | void |
1501 | void |
1409 | cairo_scaled_font_text_extents (cairo_scaled_font_t *scaled_font, |
1502 | cairo_scaled_font_text_extents (cairo_scaled_font_t *scaled_font, |
1410 | const char *utf8, |
1503 | const char *utf8, |
1411 | cairo_text_extents_t *extents) |
1504 | cairo_text_extents_t *extents) |
1412 | { |
1505 | { |
1413 | cairo_status_t status; |
1506 | cairo_status_t status; |
1414 | cairo_glyph_t *glyphs = NULL; |
1507 | cairo_glyph_t *glyphs = NULL; |
1415 | int num_glyphs; |
1508 | int num_glyphs; |
1416 | 1509 | ||
1417 | if (scaled_font->status) |
1510 | if (scaled_font->status) |
1418 | goto ZERO_EXTENTS; |
1511 | goto ZERO_EXTENTS; |
1419 | 1512 | ||
1420 | if (utf8 == NULL) |
1513 | if (utf8 == NULL) |
1421 | goto ZERO_EXTENTS; |
1514 | goto ZERO_EXTENTS; |
1422 | 1515 | ||
1423 | status = cairo_scaled_font_text_to_glyphs (scaled_font, 0., 0., |
1516 | status = cairo_scaled_font_text_to_glyphs (scaled_font, 0., 0., |
1424 | utf8, -1, |
1517 | utf8, -1, |
1425 | &glyphs, &num_glyphs, |
1518 | &glyphs, &num_glyphs, |
1426 | NULL, NULL, |
1519 | NULL, NULL, |
1427 | NULL); |
1520 | NULL); |
1428 | if (unlikely (status)) { |
1521 | if (unlikely (status)) { |
1429 | status = _cairo_scaled_font_set_error (scaled_font, status); |
1522 | status = _cairo_scaled_font_set_error (scaled_font, status); |
1430 | goto ZERO_EXTENTS; |
1523 | goto ZERO_EXTENTS; |
1431 | } |
1524 | } |
1432 | 1525 | ||
1433 | cairo_scaled_font_glyph_extents (scaled_font, glyphs, num_glyphs, extents); |
1526 | cairo_scaled_font_glyph_extents (scaled_font, glyphs, num_glyphs, extents); |
1434 | free (glyphs); |
1527 | free (glyphs); |
1435 | 1528 | ||
1436 | return; |
1529 | return; |
1437 | 1530 | ||
1438 | ZERO_EXTENTS: |
1531 | ZERO_EXTENTS: |
1439 | extents->x_bearing = 0.0; |
1532 | extents->x_bearing = 0.0; |
1440 | extents->y_bearing = 0.0; |
1533 | extents->y_bearing = 0.0; |
1441 | extents->width = 0.0; |
1534 | extents->width = 0.0; |
1442 | extents->height = 0.0; |
1535 | extents->height = 0.0; |
1443 | extents->x_advance = 0.0; |
1536 | extents->x_advance = 0.0; |
1444 | extents->y_advance = 0.0; |
1537 | extents->y_advance = 0.0; |
1445 | } |
1538 | } |
1446 | 1539 | ||
1447 | /** |
1540 | /** |
1448 | * cairo_scaled_font_glyph_extents: |
1541 | * cairo_scaled_font_glyph_extents: |
1449 | * @scaled_font: a #cairo_scaled_font_t |
1542 | * @scaled_font: a #cairo_scaled_font_t |
1450 | * @glyphs: an array of glyph IDs with X and Y offsets. |
1543 | * @glyphs: an array of glyph IDs with X and Y offsets. |
1451 | * @num_glyphs: the number of glyphs in the @glyphs array |
1544 | * @num_glyphs: the number of glyphs in the @glyphs array |
1452 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
1545 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
1453 | * |
1546 | * |
1454 | * Gets the extents for an array of glyphs. The extents describe a |
1547 | * Gets the extents for an array of glyphs. The extents describe a |
1455 | * user-space rectangle that encloses the "inked" portion of the |
1548 | * user-space rectangle that encloses the "inked" portion of the |
1456 | * glyphs, (as they would be drawn by cairo_show_glyphs() if the cairo |
1549 | * glyphs, (as they would be drawn by cairo_show_glyphs() if the cairo |
1457 | * graphics state were set to the same font_face, font_matrix, ctm, |
1550 | * graphics state were set to the same font_face, font_matrix, ctm, |
1458 | * and font_options as @scaled_font). Additionally, the x_advance and |
1551 | * and font_options as @scaled_font). Additionally, the x_advance and |
1459 | * y_advance values indicate the amount by which the current point |
1552 | * y_advance values indicate the amount by which the current point |
1460 | * would be advanced by cairo_show_glyphs(). |
1553 | * would be advanced by cairo_show_glyphs(). |
1461 | * |
1554 | * |
1462 | * Note that whitespace glyphs do not contribute to the size of the |
1555 | * Note that whitespace glyphs do not contribute to the size of the |
1463 | * rectangle (extents.width and extents.height). |
1556 | * rectangle (extents.width and extents.height). |
- | 1557 | * |
|
- | 1558 | * Since: 1.0 |
|
1464 | **/ |
1559 | **/ |
1465 | void |
1560 | void |
1466 | cairo_scaled_font_glyph_extents (cairo_scaled_font_t *scaled_font, |
1561 | cairo_scaled_font_glyph_extents (cairo_scaled_font_t *scaled_font, |
1467 | const cairo_glyph_t *glyphs, |
1562 | const cairo_glyph_t *glyphs, |
1468 | int num_glyphs, |
1563 | int num_glyphs, |
1469 | cairo_text_extents_t *extents) |
1564 | cairo_text_extents_t *extents) |
1470 | { |
1565 | { |
1471 | cairo_status_t status; |
1566 | cairo_status_t status; |
1472 | int i; |
1567 | int i; |
1473 | double min_x = 0.0, min_y = 0.0, max_x = 0.0, max_y = 0.0; |
1568 | double min_x = 0.0, min_y = 0.0, max_x = 0.0, max_y = 0.0; |
1474 | cairo_bool_t visible = FALSE; |
1569 | cairo_bool_t visible = FALSE; |
1475 | cairo_scaled_glyph_t *scaled_glyph = NULL; |
1570 | cairo_scaled_glyph_t *scaled_glyph = NULL; |
1476 | 1571 | ||
1477 | extents->x_bearing = 0.0; |
1572 | extents->x_bearing = 0.0; |
1478 | extents->y_bearing = 0.0; |
1573 | extents->y_bearing = 0.0; |
1479 | extents->width = 0.0; |
1574 | extents->width = 0.0; |
1480 | extents->height = 0.0; |
1575 | extents->height = 0.0; |
1481 | extents->x_advance = 0.0; |
1576 | extents->x_advance = 0.0; |
1482 | extents->y_advance = 0.0; |
1577 | extents->y_advance = 0.0; |
1483 | 1578 | ||
1484 | if (unlikely (scaled_font->status)) |
1579 | if (unlikely (scaled_font->status)) |
1485 | goto ZERO_EXTENTS; |
1580 | goto ZERO_EXTENTS; |
1486 | 1581 | ||
1487 | if (num_glyphs == 0) |
1582 | if (num_glyphs == 0) |
1488 | goto ZERO_EXTENTS; |
1583 | goto ZERO_EXTENTS; |
1489 | 1584 | ||
1490 | if (unlikely (num_glyphs < 0)) { |
1585 | if (unlikely (num_glyphs < 0)) { |
1491 | _cairo_error_throw (CAIRO_STATUS_NEGATIVE_COUNT); |
1586 | _cairo_error_throw (CAIRO_STATUS_NEGATIVE_COUNT); |
1492 | /* XXX Can't propagate error */ |
1587 | /* XXX Can't propagate error */ |
1493 | goto ZERO_EXTENTS; |
1588 | goto ZERO_EXTENTS; |
1494 | } |
1589 | } |
1495 | 1590 | ||
1496 | if (unlikely (glyphs == NULL)) { |
1591 | if (unlikely (glyphs == NULL)) { |
1497 | _cairo_error_throw (CAIRO_STATUS_NULL_POINTER); |
1592 | _cairo_error_throw (CAIRO_STATUS_NULL_POINTER); |
1498 | /* XXX Can't propagate error */ |
1593 | /* XXX Can't propagate error */ |
1499 | goto ZERO_EXTENTS; |
1594 | goto ZERO_EXTENTS; |
1500 | } |
1595 | } |
1501 | 1596 | ||
1502 | _cairo_scaled_font_freeze_cache (scaled_font); |
1597 | _cairo_scaled_font_freeze_cache (scaled_font); |
1503 | 1598 | ||
1504 | for (i = 0; i < num_glyphs; i++) { |
1599 | for (i = 0; i < num_glyphs; i++) { |
1505 | double left, top, right, bottom; |
1600 | double left, top, right, bottom; |
1506 | 1601 | ||
1507 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1602 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1508 | glyphs[i].index, |
1603 | glyphs[i].index, |
1509 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1604 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1510 | &scaled_glyph); |
1605 | &scaled_glyph); |
1511 | if (unlikely (status)) { |
1606 | if (unlikely (status)) { |
1512 | status = _cairo_scaled_font_set_error (scaled_font, status); |
1607 | status = _cairo_scaled_font_set_error (scaled_font, status); |
1513 | goto UNLOCK; |
1608 | goto UNLOCK; |
1514 | } |
1609 | } |
1515 | 1610 | ||
1516 | /* "Ink" extents should skip "invisible" glyphs */ |
1611 | /* "Ink" extents should skip "invisible" glyphs */ |
1517 | if (scaled_glyph->metrics.width == 0 || scaled_glyph->metrics.height == 0) |
1612 | if (scaled_glyph->metrics.width == 0 || scaled_glyph->metrics.height == 0) |
1518 | continue; |
1613 | continue; |
1519 | 1614 | ||
1520 | left = scaled_glyph->metrics.x_bearing + glyphs[i].x; |
1615 | left = scaled_glyph->metrics.x_bearing + glyphs[i].x; |
1521 | right = left + scaled_glyph->metrics.width; |
1616 | right = left + scaled_glyph->metrics.width; |
1522 | top = scaled_glyph->metrics.y_bearing + glyphs[i].y; |
1617 | top = scaled_glyph->metrics.y_bearing + glyphs[i].y; |
1523 | bottom = top + scaled_glyph->metrics.height; |
1618 | bottom = top + scaled_glyph->metrics.height; |
1524 | 1619 | ||
1525 | if (!visible) { |
1620 | if (!visible) { |
1526 | visible = TRUE; |
1621 | visible = TRUE; |
1527 | min_x = left; |
1622 | min_x = left; |
1528 | max_x = right; |
1623 | max_x = right; |
1529 | min_y = top; |
1624 | min_y = top; |
1530 | max_y = bottom; |
1625 | max_y = bottom; |
1531 | } else { |
1626 | } else { |
1532 | if (left < min_x) min_x = left; |
1627 | if (left < min_x) min_x = left; |
1533 | if (right > max_x) max_x = right; |
1628 | if (right > max_x) max_x = right; |
1534 | if (top < min_y) min_y = top; |
1629 | if (top < min_y) min_y = top; |
1535 | if (bottom > max_y) max_y = bottom; |
1630 | if (bottom > max_y) max_y = bottom; |
1536 | } |
1631 | } |
1537 | } |
1632 | } |
1538 | 1633 | ||
1539 | if (visible) { |
1634 | if (visible) { |
1540 | extents->x_bearing = min_x - glyphs[0].x; |
1635 | extents->x_bearing = min_x - glyphs[0].x; |
1541 | extents->y_bearing = min_y - glyphs[0].y; |
1636 | extents->y_bearing = min_y - glyphs[0].y; |
1542 | extents->width = max_x - min_x; |
1637 | extents->width = max_x - min_x; |
1543 | extents->height = max_y - min_y; |
1638 | extents->height = max_y - min_y; |
1544 | } else { |
1639 | } else { |
1545 | extents->x_bearing = 0.0; |
1640 | extents->x_bearing = 0.0; |
1546 | extents->y_bearing = 0.0; |
1641 | extents->y_bearing = 0.0; |
1547 | extents->width = 0.0; |
1642 | extents->width = 0.0; |
1548 | extents->height = 0.0; |
1643 | extents->height = 0.0; |
1549 | } |
1644 | } |
1550 | 1645 | ||
1551 | if (num_glyphs) { |
1646 | if (num_glyphs) { |
1552 | double x0, y0, x1, y1; |
1647 | double x0, y0, x1, y1; |
1553 | 1648 | ||
1554 | x0 = glyphs[0].x; |
1649 | x0 = glyphs[0].x; |
1555 | y0 = glyphs[0].y; |
1650 | y0 = glyphs[0].y; |
1556 | 1651 | ||
1557 | /* scaled_glyph contains the glyph for num_glyphs - 1 already. */ |
1652 | /* scaled_glyph contains the glyph for num_glyphs - 1 already. */ |
1558 | x1 = glyphs[num_glyphs - 1].x + scaled_glyph->metrics.x_advance; |
1653 | x1 = glyphs[num_glyphs - 1].x + scaled_glyph->metrics.x_advance; |
1559 | y1 = glyphs[num_glyphs - 1].y + scaled_glyph->metrics.y_advance; |
1654 | y1 = glyphs[num_glyphs - 1].y + scaled_glyph->metrics.y_advance; |
1560 | 1655 | ||
1561 | extents->x_advance = x1 - x0; |
1656 | extents->x_advance = x1 - x0; |
1562 | extents->y_advance = y1 - y0; |
1657 | extents->y_advance = y1 - y0; |
1563 | } else { |
1658 | } else { |
1564 | extents->x_advance = 0.0; |
1659 | extents->x_advance = 0.0; |
1565 | extents->y_advance = 0.0; |
1660 | extents->y_advance = 0.0; |
1566 | } |
1661 | } |
1567 | 1662 | ||
1568 | UNLOCK: |
1663 | UNLOCK: |
1569 | _cairo_scaled_font_thaw_cache (scaled_font); |
1664 | _cairo_scaled_font_thaw_cache (scaled_font); |
1570 | return; |
1665 | return; |
1571 | 1666 | ||
1572 | ZERO_EXTENTS: |
1667 | ZERO_EXTENTS: |
1573 | extents->x_bearing = 0.0; |
1668 | extents->x_bearing = 0.0; |
1574 | extents->y_bearing = 0.0; |
1669 | extents->y_bearing = 0.0; |
1575 | extents->width = 0.0; |
1670 | extents->width = 0.0; |
1576 | extents->height = 0.0; |
1671 | extents->height = 0.0; |
1577 | extents->x_advance = 0.0; |
1672 | extents->x_advance = 0.0; |
1578 | extents->y_advance = 0.0; |
1673 | extents->y_advance = 0.0; |
1579 | } |
1674 | } |
1580 | slim_hidden_def (cairo_scaled_font_glyph_extents); |
1675 | slim_hidden_def (cairo_scaled_font_glyph_extents); |
1581 | 1676 | ||
1582 | #define GLYPH_LUT_SIZE 64 |
1677 | #define GLYPH_LUT_SIZE 64 |
1583 | static cairo_status_t |
1678 | static cairo_status_t |
1584 | cairo_scaled_font_text_to_glyphs_internal_cached (cairo_scaled_font_t *scaled_font, |
1679 | cairo_scaled_font_text_to_glyphs_internal_cached (cairo_scaled_font_t *scaled_font, |
1585 | double x, |
1680 | double x, |
1586 | double y, |
1681 | double y, |
1587 | const char *utf8, |
1682 | const char *utf8, |
1588 | cairo_glyph_t *glyphs, |
1683 | cairo_glyph_t *glyphs, |
1589 | cairo_text_cluster_t **clusters, |
1684 | cairo_text_cluster_t **clusters, |
1590 | int num_chars) |
1685 | int num_chars) |
1591 | { |
1686 | { |
1592 | struct glyph_lut_elt { |
1687 | struct glyph_lut_elt { |
1593 | unsigned long index; |
1688 | unsigned long index; |
1594 | double x_advance; |
1689 | double x_advance; |
1595 | double y_advance; |
1690 | double y_advance; |
1596 | } glyph_lut[GLYPH_LUT_SIZE]; |
1691 | } glyph_lut[GLYPH_LUT_SIZE]; |
1597 | uint32_t glyph_lut_unicode[GLYPH_LUT_SIZE]; |
1692 | uint32_t glyph_lut_unicode[GLYPH_LUT_SIZE]; |
1598 | cairo_status_t status; |
1693 | cairo_status_t status; |
1599 | const char *p; |
1694 | const char *p; |
1600 | int i; |
1695 | int i; |
1601 | 1696 | ||
1602 | for (i = 0; i < GLYPH_LUT_SIZE; i++) |
1697 | for (i = 0; i < GLYPH_LUT_SIZE; i++) |
1603 | glyph_lut_unicode[i] = ~0U; |
1698 | glyph_lut_unicode[i] = ~0U; |
1604 | 1699 | ||
1605 | p = utf8; |
1700 | p = utf8; |
1606 | for (i = 0; i < num_chars; i++) { |
1701 | for (i = 0; i < num_chars; i++) { |
1607 | int idx, num_bytes; |
1702 | int idx, num_bytes; |
1608 | uint32_t unicode; |
1703 | uint32_t unicode; |
1609 | cairo_scaled_glyph_t *scaled_glyph; |
1704 | cairo_scaled_glyph_t *scaled_glyph; |
1610 | struct glyph_lut_elt *glyph_slot; |
1705 | struct glyph_lut_elt *glyph_slot; |
1611 | 1706 | ||
1612 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
1707 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
1613 | p += num_bytes; |
1708 | p += num_bytes; |
1614 | 1709 | ||
1615 | glyphs[i].x = x; |
1710 | glyphs[i].x = x; |
1616 | glyphs[i].y = y; |
1711 | glyphs[i].y = y; |
1617 | 1712 | ||
1618 | idx = unicode % ARRAY_LENGTH (glyph_lut); |
1713 | idx = unicode % ARRAY_LENGTH (glyph_lut); |
1619 | glyph_slot = &glyph_lut[idx]; |
1714 | glyph_slot = &glyph_lut[idx]; |
1620 | if (glyph_lut_unicode[idx] == unicode) { |
1715 | if (glyph_lut_unicode[idx] == unicode) { |
1621 | glyphs[i].index = glyph_slot->index; |
1716 | glyphs[i].index = glyph_slot->index; |
1622 | x += glyph_slot->x_advance; |
1717 | x += glyph_slot->x_advance; |
1623 | y += glyph_slot->y_advance; |
1718 | y += glyph_slot->y_advance; |
1624 | } else { |
1719 | } else { |
1625 | unsigned long g; |
1720 | unsigned long g; |
1626 | 1721 | ||
1627 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
1722 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
1628 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1723 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1629 | g, |
1724 | g, |
1630 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1725 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1631 | &scaled_glyph); |
1726 | &scaled_glyph); |
1632 | if (unlikely (status)) |
1727 | if (unlikely (status)) |
1633 | return status; |
1728 | return status; |
1634 | 1729 | ||
1635 | x += scaled_glyph->metrics.x_advance; |
1730 | x += scaled_glyph->metrics.x_advance; |
1636 | y += scaled_glyph->metrics.y_advance; |
1731 | y += scaled_glyph->metrics.y_advance; |
1637 | 1732 | ||
1638 | glyph_lut_unicode[idx] = unicode; |
1733 | glyph_lut_unicode[idx] = unicode; |
1639 | glyph_slot->index = g; |
1734 | glyph_slot->index = g; |
1640 | glyph_slot->x_advance = scaled_glyph->metrics.x_advance; |
1735 | glyph_slot->x_advance = scaled_glyph->metrics.x_advance; |
1641 | glyph_slot->y_advance = scaled_glyph->metrics.y_advance; |
1736 | glyph_slot->y_advance = scaled_glyph->metrics.y_advance; |
1642 | 1737 | ||
1643 | glyphs[i].index = g; |
1738 | glyphs[i].index = g; |
1644 | } |
1739 | } |
1645 | 1740 | ||
1646 | if (clusters) { |
1741 | if (clusters) { |
1647 | (*clusters)[i].num_bytes = num_bytes; |
1742 | (*clusters)[i].num_bytes = num_bytes; |
1648 | (*clusters)[i].num_glyphs = 1; |
1743 | (*clusters)[i].num_glyphs = 1; |
1649 | } |
1744 | } |
1650 | } |
1745 | } |
1651 | 1746 | ||
1652 | return CAIRO_STATUS_SUCCESS; |
1747 | return CAIRO_STATUS_SUCCESS; |
1653 | } |
1748 | } |
1654 | 1749 | ||
1655 | static cairo_status_t |
1750 | static cairo_status_t |
1656 | cairo_scaled_font_text_to_glyphs_internal_uncached (cairo_scaled_font_t *scaled_font, |
1751 | cairo_scaled_font_text_to_glyphs_internal_uncached (cairo_scaled_font_t *scaled_font, |
1657 | double x, |
1752 | double x, |
1658 | double y, |
1753 | double y, |
1659 | const char *utf8, |
1754 | const char *utf8, |
1660 | cairo_glyph_t *glyphs, |
1755 | cairo_glyph_t *glyphs, |
1661 | cairo_text_cluster_t **clusters, |
1756 | cairo_text_cluster_t **clusters, |
1662 | int num_chars) |
1757 | int num_chars) |
1663 | { |
1758 | { |
1664 | const char *p; |
1759 | const char *p; |
1665 | int i; |
1760 | int i; |
1666 | 1761 | ||
1667 | p = utf8; |
1762 | p = utf8; |
1668 | for (i = 0; i < num_chars; i++) { |
1763 | for (i = 0; i < num_chars; i++) { |
1669 | unsigned long g; |
1764 | unsigned long g; |
1670 | int num_bytes; |
1765 | int num_bytes; |
1671 | uint32_t unicode; |
1766 | uint32_t unicode; |
1672 | cairo_scaled_glyph_t *scaled_glyph; |
1767 | cairo_scaled_glyph_t *scaled_glyph; |
1673 | cairo_status_t status; |
1768 | cairo_status_t status; |
1674 | 1769 | ||
1675 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
1770 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
1676 | p += num_bytes; |
1771 | p += num_bytes; |
1677 | 1772 | ||
1678 | glyphs[i].x = x; |
1773 | glyphs[i].x = x; |
1679 | glyphs[i].y = y; |
1774 | glyphs[i].y = y; |
1680 | 1775 | ||
1681 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
1776 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
1682 | 1777 | ||
1683 | /* |
1778 | /* |
1684 | * No advance needed for a single character string. So, let's speed up |
1779 | * No advance needed for a single character string. So, let's speed up |
1685 | * one-character strings by skipping glyph lookup. |
1780 | * one-character strings by skipping glyph lookup. |
1686 | */ |
1781 | */ |
1687 | if (num_chars > 1) { |
1782 | if (num_chars > 1) { |
1688 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1783 | status = _cairo_scaled_glyph_lookup (scaled_font, |
1689 | g, |
1784 | g, |
1690 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1785 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
1691 | &scaled_glyph); |
1786 | &scaled_glyph); |
1692 | if (unlikely (status)) |
1787 | if (unlikely (status)) |
1693 | return status; |
1788 | return status; |
1694 | 1789 | ||
1695 | x += scaled_glyph->metrics.x_advance; |
1790 | x += scaled_glyph->metrics.x_advance; |
1696 | y += scaled_glyph->metrics.y_advance; |
1791 | y += scaled_glyph->metrics.y_advance; |
1697 | } |
1792 | } |
1698 | 1793 | ||
1699 | glyphs[i].index = g; |
1794 | glyphs[i].index = g; |
1700 | 1795 | ||
1701 | if (clusters) { |
1796 | if (clusters) { |
1702 | (*clusters)[i].num_bytes = num_bytes; |
1797 | (*clusters)[i].num_bytes = num_bytes; |
1703 | (*clusters)[i].num_glyphs = 1; |
1798 | (*clusters)[i].num_glyphs = 1; |
1704 | } |
1799 | } |
1705 | } |
1800 | } |
1706 | 1801 | ||
1707 | return CAIRO_STATUS_SUCCESS; |
1802 | return CAIRO_STATUS_SUCCESS; |
1708 | } |
1803 | } |
1709 | 1804 | ||
1710 | /** |
1805 | /** |
1711 | * cairo_scaled_font_text_to_glyphs: |
1806 | * cairo_scaled_font_text_to_glyphs: |
1712 | * @x: X position to place first glyph |
1807 | * @x: X position to place first glyph |
1713 | * @y: Y position to place first glyph |
1808 | * @y: Y position to place first glyph |
1714 | * @scaled_font: a #cairo_scaled_font_t |
1809 | * @scaled_font: a #cairo_scaled_font_t |
1715 | * @utf8: a string of text encoded in UTF-8 |
1810 | * @utf8: a string of text encoded in UTF-8 |
1716 | * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated |
1811 | * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated |
1717 | * @glyphs: pointer to array of glyphs to fill |
1812 | * @glyphs: pointer to array of glyphs to fill |
1718 | * @num_glyphs: pointer to number of glyphs |
1813 | * @num_glyphs: pointer to number of glyphs |
1719 | * @clusters: pointer to array of cluster mapping information to fill, or %NULL |
1814 | * @clusters: pointer to array of cluster mapping information to fill, or %NULL |
1720 | * @num_clusters: pointer to number of clusters, or %NULL |
1815 | * @num_clusters: pointer to number of clusters, or %NULL |
1721 | * @cluster_flags: pointer to location to store cluster flags corresponding to the |
1816 | * @cluster_flags: pointer to location to store cluster flags corresponding to the |
1722 | * output @clusters, or %NULL |
1817 | * output @clusters, or %NULL |
1723 | * |
1818 | * |
1724 | * Converts UTF-8 text to an array of glyphs, optionally with cluster |
1819 | * Converts UTF-8 text to an array of glyphs, optionally with cluster |
1725 | * mapping, that can be used to render later using @scaled_font. |
1820 | * mapping, that can be used to render later using @scaled_font. |
1726 | * |
1821 | * |
1727 | * If @glyphs initially points to a non-%NULL value, that array is used |
1822 | * If @glyphs initially points to a non-%NULL value, that array is used |
1728 | * as a glyph buffer, and @num_glyphs should point to the number of glyph |
1823 | * as a glyph buffer, and @num_glyphs should point to the number of glyph |
1729 | * entries available there. If the provided glyph array is too short for |
1824 | * entries available there. If the provided glyph array is too short for |
1730 | * the conversion, a new glyph array is allocated using cairo_glyph_allocate() |
1825 | * the conversion, a new glyph array is allocated using cairo_glyph_allocate() |
1731 | * and placed in @glyphs. Upon return, @num_glyphs always contains the |
1826 | * and placed in @glyphs. Upon return, @num_glyphs always contains the |
1732 | * number of generated glyphs. If the value @glyphs points to has changed |
1827 | * number of generated glyphs. If the value @glyphs points to has changed |
1733 | * after the call, the user is responsible for freeing the allocated glyph |
1828 | * after the call, the user is responsible for freeing the allocated glyph |
1734 | * array using cairo_glyph_free(). This may happen even if the provided |
1829 | * array using cairo_glyph_free(). This may happen even if the provided |
1735 | * array was large enough. |
1830 | * array was large enough. |
1736 | * |
1831 | * |
1737 | * If @clusters is not %NULL, @num_clusters and @cluster_flags should not be %NULL, |
1832 | * If @clusters is not %NULL, @num_clusters and @cluster_flags should not be %NULL, |
1738 | * and cluster mapping will be computed. |
1833 | * and cluster mapping will be computed. |
1739 | * The semantics of how cluster array allocation works is similar to the glyph |
1834 | * The semantics of how cluster array allocation works is similar to the glyph |
1740 | * array. That is, |
1835 | * array. That is, |
1741 | * if @clusters initially points to a non-%NULL value, that array is used |
1836 | * if @clusters initially points to a non-%NULL value, that array is used |
1742 | * as a cluster buffer, and @num_clusters should point to the number of cluster |
1837 | * as a cluster buffer, and @num_clusters should point to the number of cluster |
1743 | * entries available there. If the provided cluster array is too short for |
1838 | * entries available there. If the provided cluster array is too short for |
1744 | * the conversion, a new cluster array is allocated using cairo_text_cluster_allocate() |
1839 | * the conversion, a new cluster array is allocated using cairo_text_cluster_allocate() |
1745 | * and placed in @clusters. Upon return, @num_clusters always contains the |
1840 | * and placed in @clusters. Upon return, @num_clusters always contains the |
1746 | * number of generated clusters. If the value @clusters points at has changed |
1841 | * number of generated clusters. If the value @clusters points at has changed |
1747 | * after the call, the user is responsible for freeing the allocated cluster |
1842 | * after the call, the user is responsible for freeing the allocated cluster |
1748 | * array using cairo_text_cluster_free(). This may happen even if the provided |
1843 | * array using cairo_text_cluster_free(). This may happen even if the provided |
1749 | * array was large enough. |
1844 | * array was large enough. |
1750 | * |
1845 | * |
1751 | * In the simplest case, @glyphs and @clusters can point to %NULL initially |
1846 | * In the simplest case, @glyphs and @clusters can point to %NULL initially |
1752 | * and a suitable array will be allocated. In code: |
1847 | * and a suitable array will be allocated. In code: |
1753 | * |
1848 | * |
1754 | * cairo_status_t status; |
1849 | * cairo_status_t status; |
1755 | * |
1850 | * |
1756 | * cairo_glyph_t *glyphs = NULL; |
1851 | * cairo_glyph_t *glyphs = NULL; |
1757 | * int num_glyphs; |
1852 | * int num_glyphs; |
1758 | * cairo_text_cluster_t *clusters = NULL; |
1853 | * cairo_text_cluster_t *clusters = NULL; |
1759 | * int num_clusters; |
1854 | * int num_clusters; |
1760 | * cairo_text_cluster_flags_t cluster_flags; |
1855 | * cairo_text_cluster_flags_t cluster_flags; |
1761 | * |
1856 | * |
1762 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1857 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1763 | * x, y, |
1858 | * x, y, |
1764 | * utf8, utf8_len, |
1859 | * utf8, utf8_len, |
1765 | * &glyphs, &num_glyphs, |
1860 | * &glyphs, &num_glyphs, |
1766 | * &clusters, &num_clusters, &cluster_flags); |
1861 | * &clusters, &num_clusters, &cluster_flags); |
1767 | * |
1862 | * |
1768 | * if (status == CAIRO_STATUS_SUCCESS) { |
1863 | * if (status == CAIRO_STATUS_SUCCESS) { |
1769 | * cairo_show_text_glyphs (cr, |
1864 | * cairo_show_text_glyphs (cr, |
1770 | * utf8, utf8_len, |
1865 | * utf8, utf8_len, |
1771 | * glyphs, num_glyphs, |
1866 | * glyphs, num_glyphs, |
1772 | * clusters, num_clusters, cluster_flags); |
1867 | * clusters, num_clusters, cluster_flags); |
1773 | * |
1868 | * |
1774 | * cairo_glyph_free (glyphs); |
1869 | * cairo_glyph_free (glyphs); |
1775 | * cairo_text_cluster_free (clusters); |
1870 | * cairo_text_cluster_free (clusters); |
1776 | * } |
1871 | * } |
1777 | * |
1872 | * |
1778 | * |
1873 | * |
1779 | * If no cluster mapping is needed: |
1874 | * If no cluster mapping is needed: |
1780 | * |
1875 | * |
1781 | * cairo_status_t status; |
1876 | * cairo_status_t status; |
1782 | * |
1877 | * |
1783 | * cairo_glyph_t *glyphs = NULL; |
1878 | * cairo_glyph_t *glyphs = NULL; |
1784 | * int num_glyphs; |
1879 | * int num_glyphs; |
1785 | * |
1880 | * |
1786 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1881 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1787 | * x, y, |
1882 | * x, y, |
1788 | * utf8, utf8_len, |
1883 | * utf8, utf8_len, |
1789 | * &glyphs, &num_glyphs, |
1884 | * &glyphs, &num_glyphs, |
1790 | * NULL, NULL, |
1885 | * NULL, NULL, |
1791 | * NULL); |
1886 | * NULL); |
1792 | * |
1887 | * |
1793 | * if (status == CAIRO_STATUS_SUCCESS) { |
1888 | * if (status == CAIRO_STATUS_SUCCESS) { |
1794 | * cairo_show_glyphs (cr, glyphs, num_glyphs); |
1889 | * cairo_show_glyphs (cr, glyphs, num_glyphs); |
1795 | * cairo_glyph_free (glyphs); |
1890 | * cairo_glyph_free (glyphs); |
1796 | * } |
1891 | * } |
1797 | * |
1892 | * |
1798 | * |
1893 | * |
1799 | * If stack-based glyph and cluster arrays are to be used for small |
1894 | * If stack-based glyph and cluster arrays are to be used for small |
1800 | * arrays: |
1895 | * arrays: |
1801 | * |
1896 | * |
1802 | * cairo_status_t status; |
1897 | * cairo_status_t status; |
1803 | * |
1898 | * |
1804 | * cairo_glyph_t stack_glyphs[40]; |
1899 | * cairo_glyph_t stack_glyphs[40]; |
1805 | * cairo_glyph_t *glyphs = stack_glyphs; |
1900 | * cairo_glyph_t *glyphs = stack_glyphs; |
1806 | * int num_glyphs = sizeof (stack_glyphs) / sizeof (stack_glyphs[0]); |
1901 | * int num_glyphs = sizeof (stack_glyphs) / sizeof (stack_glyphs[0]); |
1807 | * cairo_text_cluster_t stack_clusters[40]; |
1902 | * cairo_text_cluster_t stack_clusters[40]; |
1808 | * cairo_text_cluster_t *clusters = stack_clusters; |
1903 | * cairo_text_cluster_t *clusters = stack_clusters; |
1809 | * int num_clusters = sizeof (stack_clusters) / sizeof (stack_clusters[0]); |
1904 | * int num_clusters = sizeof (stack_clusters) / sizeof (stack_clusters[0]); |
1810 | * cairo_text_cluster_flags_t cluster_flags; |
1905 | * cairo_text_cluster_flags_t cluster_flags; |
1811 | * |
1906 | * |
1812 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1907 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
1813 | * x, y, |
1908 | * x, y, |
1814 | * utf8, utf8_len, |
1909 | * utf8, utf8_len, |
1815 | * &glyphs, &num_glyphs, |
1910 | * &glyphs, &num_glyphs, |
1816 | * &clusters, &num_clusters, &cluster_flags); |
1911 | * &clusters, &num_clusters, &cluster_flags); |
1817 | * |
1912 | * |
1818 | * if (status == CAIRO_STATUS_SUCCESS) { |
1913 | * if (status == CAIRO_STATUS_SUCCESS) { |
1819 | * cairo_show_text_glyphs (cr, |
1914 | * cairo_show_text_glyphs (cr, |
1820 | * utf8, utf8_len, |
1915 | * utf8, utf8_len, |
1821 | * glyphs, num_glyphs, |
1916 | * glyphs, num_glyphs, |
1822 | * clusters, num_clusters, cluster_flags); |
1917 | * clusters, num_clusters, cluster_flags); |
1823 | * |
1918 | * |
1824 | * if (glyphs != stack_glyphs) |
1919 | * if (glyphs != stack_glyphs) |
1825 | * cairo_glyph_free (glyphs); |
1920 | * cairo_glyph_free (glyphs); |
1826 | * if (clusters != stack_clusters) |
1921 | * if (clusters != stack_clusters) |
1827 | * cairo_text_cluster_free (clusters); |
1922 | * cairo_text_cluster_free (clusters); |
1828 | * } |
1923 | * } |
1829 | * |
1924 | * |
1830 | * |
1925 | * |
1831 | * For details of how @clusters, @num_clusters, and @cluster_flags map input |
1926 | * For details of how @clusters, @num_clusters, and @cluster_flags map input |
1832 | * UTF-8 text to the output glyphs see cairo_show_text_glyphs(). |
1927 | * UTF-8 text to the output glyphs see cairo_show_text_glyphs(). |
1833 | * |
1928 | * |
1834 | * The output values can be readily passed to cairo_show_text_glyphs() |
1929 | * The output values can be readily passed to cairo_show_text_glyphs() |
1835 | * cairo_show_glyphs(), or related functions, assuming that the exact |
1930 | * cairo_show_glyphs(), or related functions, assuming that the exact |
1836 | * same @scaled_font is used for the operation. |
1931 | * same @scaled_font is used for the operation. |
1837 | * |
1932 | * |
1838 | * Return value: %CAIRO_STATUS_SUCCESS upon success, or an error status |
1933 | * Return value: %CAIRO_STATUS_SUCCESS upon success, or an error status |
1839 | * if the input values are wrong or if conversion failed. If the input |
1934 | * if the input values are wrong or if conversion failed. If the input |
1840 | * values are correct but the conversion failed, the error status is also |
1935 | * values are correct but the conversion failed, the error status is also |
1841 | * set on @scaled_font. |
1936 | * set on @scaled_font. |
1842 | * |
1937 | * |
1843 | * Since: 1.8 |
1938 | * Since: 1.8 |
1844 | **/ |
1939 | **/ |
1845 | #define CACHING_THRESHOLD 16 |
1940 | #define CACHING_THRESHOLD 16 |
1846 | cairo_status_t |
1941 | cairo_status_t |
1847 | cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t *scaled_font, |
1942 | cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t *scaled_font, |
1848 | double x, |
1943 | double x, |
1849 | double y, |
1944 | double y, |
1850 | const char *utf8, |
1945 | const char *utf8, |
1851 | int utf8_len, |
1946 | int utf8_len, |
1852 | cairo_glyph_t **glyphs, |
1947 | cairo_glyph_t **glyphs, |
1853 | int *num_glyphs, |
1948 | int *num_glyphs, |
1854 | cairo_text_cluster_t **clusters, |
1949 | cairo_text_cluster_t **clusters, |
1855 | int *num_clusters, |
1950 | int *num_clusters, |
1856 | cairo_text_cluster_flags_t *cluster_flags) |
1951 | cairo_text_cluster_flags_t *cluster_flags) |
1857 | { |
1952 | { |
1858 | int num_chars = 0; |
1953 | int num_chars = 0; |
1859 | cairo_status_t status; |
1954 | cairo_int_status_t status; |
1860 | cairo_glyph_t *orig_glyphs; |
1955 | cairo_glyph_t *orig_glyphs; |
1861 | cairo_text_cluster_t *orig_clusters; |
1956 | cairo_text_cluster_t *orig_clusters; |
1862 | 1957 | ||
1863 | status = scaled_font->status; |
1958 | status = scaled_font->status; |
1864 | if (unlikely (status)) |
1959 | if (unlikely (status)) |
1865 | return status; |
1960 | return status; |
1866 | 1961 | ||
1867 | /* A slew of sanity checks */ |
1962 | /* A slew of sanity checks */ |
1868 | 1963 | ||
1869 | /* glyphs and num_glyphs can't be NULL */ |
1964 | /* glyphs and num_glyphs can't be NULL */ |
1870 | if (glyphs == NULL || |
1965 | if (glyphs == NULL || |
1871 | num_glyphs == NULL) { |
1966 | num_glyphs == NULL) { |
1872 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1967 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1873 | goto BAIL; |
1968 | goto BAIL; |
1874 | } |
1969 | } |
1875 | 1970 | ||
1876 | /* Special case for NULL and -1 */ |
1971 | /* Special case for NULL and -1 */ |
1877 | if (utf8 == NULL && utf8_len == -1) |
1972 | if (utf8 == NULL && utf8_len == -1) |
1878 | utf8_len = 0; |
1973 | utf8_len = 0; |
1879 | 1974 | ||
1880 | /* No NULLs for non-NULLs! */ |
1975 | /* No NULLs for non-NULLs! */ |
1881 | if ((utf8_len && utf8 == NULL) || |
1976 | if ((utf8_len && utf8 == NULL) || |
1882 | (clusters && num_clusters == NULL) || |
1977 | (clusters && num_clusters == NULL) || |
1883 | (clusters && cluster_flags == NULL)) { |
1978 | (clusters && cluster_flags == NULL)) { |
1884 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1979 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1885 | goto BAIL; |
1980 | goto BAIL; |
1886 | } |
1981 | } |
1887 | 1982 | ||
1888 | /* A -1 for utf8_len means NUL-terminated */ |
1983 | /* A -1 for utf8_len means NUL-terminated */ |
1889 | if (utf8_len == -1) |
1984 | if (utf8_len == -1) |
1890 | utf8_len = strlen (utf8); |
1985 | utf8_len = strlen (utf8); |
1891 | 1986 | ||
1892 | /* A NULL *glyphs means no prealloced glyphs array */ |
1987 | /* A NULL *glyphs means no prealloced glyphs array */ |
1893 | if (glyphs && *glyphs == NULL) |
1988 | if (glyphs && *glyphs == NULL) |
1894 | *num_glyphs = 0; |
1989 | *num_glyphs = 0; |
1895 | 1990 | ||
1896 | /* A NULL *clusters means no prealloced clusters array */ |
1991 | /* A NULL *clusters means no prealloced clusters array */ |
1897 | if (clusters && *clusters == NULL) |
1992 | if (clusters && *clusters == NULL) |
1898 | *num_clusters = 0; |
1993 | *num_clusters = 0; |
1899 | 1994 | ||
1900 | if (!clusters && num_clusters) { |
1995 | if (!clusters && num_clusters) { |
1901 | num_clusters = NULL; |
1996 | num_clusters = NULL; |
1902 | } |
1997 | } |
1903 | 1998 | ||
1904 | if (cluster_flags) { |
1999 | if (cluster_flags) { |
1905 | *cluster_flags = FALSE; |
2000 | *cluster_flags = FALSE; |
1906 | } |
2001 | } |
1907 | 2002 | ||
1908 | if (!clusters && cluster_flags) { |
2003 | if (!clusters && cluster_flags) { |
1909 | cluster_flags = NULL; |
2004 | cluster_flags = NULL; |
1910 | } |
2005 | } |
1911 | 2006 | ||
1912 | /* Apart from that, no negatives */ |
2007 | /* Apart from that, no negatives */ |
1913 | if (utf8_len < 0 || |
2008 | if (utf8_len < 0 || |
1914 | *num_glyphs < 0 || |
2009 | *num_glyphs < 0 || |
1915 | (num_clusters && *num_clusters < 0)) { |
2010 | (num_clusters && *num_clusters < 0)) { |
1916 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
2011 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
1917 | goto BAIL; |
2012 | goto BAIL; |
1918 | } |
2013 | } |
1919 | 2014 | ||
1920 | if (utf8_len == 0) { |
2015 | if (utf8_len == 0) { |
1921 | status = CAIRO_STATUS_SUCCESS; |
2016 | status = CAIRO_STATUS_SUCCESS; |
1922 | goto BAIL; |
2017 | goto BAIL; |
1923 | } |
2018 | } |
1924 | 2019 | ||
1925 | /* validate input so backend does not have to */ |
2020 | /* validate input so backend does not have to */ |
1926 | status = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL, &num_chars); |
2021 | status = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL, &num_chars); |
1927 | if (unlikely (status)) |
2022 | if (unlikely (status)) |
1928 | goto BAIL; |
2023 | goto BAIL; |
1929 | 2024 | ||
1930 | _cairo_scaled_font_freeze_cache (scaled_font); |
2025 | _cairo_scaled_font_freeze_cache (scaled_font); |
1931 | 2026 | ||
1932 | orig_glyphs = *glyphs; |
2027 | orig_glyphs = *glyphs; |
1933 | orig_clusters = clusters ? *clusters : NULL; |
2028 | orig_clusters = clusters ? *clusters : NULL; |
1934 | 2029 | ||
1935 | if (scaled_font->backend->text_to_glyphs) { |
2030 | if (scaled_font->backend->text_to_glyphs) { |
1936 | status = scaled_font->backend->text_to_glyphs (scaled_font, x, y, |
2031 | status = scaled_font->backend->text_to_glyphs (scaled_font, x, y, |
1937 | utf8, utf8_len, |
2032 | utf8, utf8_len, |
1938 | glyphs, num_glyphs, |
2033 | glyphs, num_glyphs, |
1939 | clusters, num_clusters, |
2034 | clusters, num_clusters, |
1940 | cluster_flags); |
2035 | cluster_flags); |
1941 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) { |
2036 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) { |
1942 | if (status == CAIRO_STATUS_SUCCESS) { |
2037 | if (status == CAIRO_INT_STATUS_SUCCESS) { |
1943 | /* The checks here are crude; we only should do them in |
2038 | /* The checks here are crude; we only should do them in |
1944 | * user-font backend, but they don't hurt here. This stuff |
2039 | * user-font backend, but they don't hurt here. This stuff |
1945 | * can be hard to get right. */ |
2040 | * can be hard to get right. */ |
1946 | 2041 | ||
1947 | if (*num_glyphs < 0) { |
2042 | if (*num_glyphs < 0) { |
1948 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
2043 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
1949 | goto DONE; |
2044 | goto DONE; |
1950 | } |
2045 | } |
1951 | if (num_glyphs && *glyphs == NULL) { |
2046 | if (num_glyphs && *glyphs == NULL) { |
1952 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
2047 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1953 | goto DONE; |
2048 | goto DONE; |
1954 | } |
2049 | } |
1955 | 2050 | ||
1956 | if (clusters) { |
2051 | if (clusters) { |
1957 | if (*num_clusters < 0) { |
2052 | if (*num_clusters < 0) { |
1958 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
2053 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
1959 | goto DONE; |
2054 | goto DONE; |
1960 | } |
2055 | } |
1961 | if (num_clusters && *clusters == NULL) { |
2056 | if (num_clusters && *clusters == NULL) { |
1962 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
2057 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
1963 | goto DONE; |
2058 | goto DONE; |
1964 | } |
2059 | } |
1965 | 2060 | ||
1966 | /* Don't trust the backend, validate clusters! */ |
2061 | /* Don't trust the backend, validate clusters! */ |
1967 | status = |
2062 | status = |
1968 | _cairo_validate_text_clusters (utf8, utf8_len, |
2063 | _cairo_validate_text_clusters (utf8, utf8_len, |
1969 | *glyphs, *num_glyphs, |
2064 | *glyphs, *num_glyphs, |
1970 | *clusters, *num_clusters, |
2065 | *clusters, *num_clusters, |
1971 | *cluster_flags); |
2066 | *cluster_flags); |
1972 | } |
2067 | } |
1973 | } |
2068 | } |
1974 | 2069 | ||
1975 | goto DONE; |
2070 | goto DONE; |
1976 | } |
2071 | } |
1977 | } |
2072 | } |
1978 | 2073 | ||
1979 | if (*num_glyphs < num_chars) { |
2074 | if (*num_glyphs < num_chars) { |
1980 | *glyphs = cairo_glyph_allocate (num_chars); |
2075 | *glyphs = cairo_glyph_allocate (num_chars); |
1981 | if (unlikely (*glyphs == NULL)) { |
2076 | if (unlikely (*glyphs == NULL)) { |
1982 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2077 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
1983 | goto DONE; |
2078 | goto DONE; |
1984 | } |
2079 | } |
1985 | } |
2080 | } |
1986 | *num_glyphs = num_chars; |
2081 | *num_glyphs = num_chars; |
1987 | 2082 | ||
1988 | if (clusters) { |
2083 | if (clusters) { |
1989 | if (*num_clusters < num_chars) { |
2084 | if (*num_clusters < num_chars) { |
1990 | *clusters = cairo_text_cluster_allocate (num_chars); |
2085 | *clusters = cairo_text_cluster_allocate (num_chars); |
1991 | if (unlikely (*clusters == NULL)) { |
2086 | if (unlikely (*clusters == NULL)) { |
1992 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2087 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
1993 | goto DONE; |
2088 | goto DONE; |
1994 | } |
2089 | } |
1995 | } |
2090 | } |
1996 | *num_clusters = num_chars; |
2091 | *num_clusters = num_chars; |
1997 | } |
2092 | } |
1998 | 2093 | ||
1999 | if (num_chars > CACHING_THRESHOLD) |
2094 | if (num_chars > CACHING_THRESHOLD) |
2000 | status = cairo_scaled_font_text_to_glyphs_internal_cached (scaled_font, |
2095 | status = cairo_scaled_font_text_to_glyphs_internal_cached (scaled_font, |
2001 | x, y, |
2096 | x, y, |
2002 | utf8, |
2097 | utf8, |
2003 | *glyphs, |
2098 | *glyphs, |
2004 | clusters, |
2099 | clusters, |
2005 | num_chars); |
2100 | num_chars); |
2006 | else |
2101 | else |
2007 | status = cairo_scaled_font_text_to_glyphs_internal_uncached (scaled_font, |
2102 | status = cairo_scaled_font_text_to_glyphs_internal_uncached (scaled_font, |
2008 | x, y, |
2103 | x, y, |
2009 | utf8, |
2104 | utf8, |
2010 | *glyphs, |
2105 | *glyphs, |
2011 | clusters, |
2106 | clusters, |
2012 | num_chars); |
2107 | num_chars); |
2013 | 2108 | ||
2014 | DONE: /* error that should be logged on scaled_font happened */ |
2109 | DONE: /* error that should be logged on scaled_font happened */ |
2015 | _cairo_scaled_font_thaw_cache (scaled_font); |
2110 | _cairo_scaled_font_thaw_cache (scaled_font); |
2016 | 2111 | ||
2017 | if (unlikely (status)) { |
2112 | if (unlikely (status)) { |
2018 | *num_glyphs = 0; |
2113 | *num_glyphs = 0; |
2019 | if (*glyphs != orig_glyphs) { |
2114 | if (*glyphs != orig_glyphs) { |
2020 | cairo_glyph_free (*glyphs); |
2115 | cairo_glyph_free (*glyphs); |
2021 | *glyphs = orig_glyphs; |
2116 | *glyphs = orig_glyphs; |
2022 | } |
2117 | } |
2023 | 2118 | ||
2024 | if (clusters) { |
2119 | if (clusters) { |
2025 | *num_clusters = 0; |
2120 | *num_clusters = 0; |
2026 | if (*clusters != orig_clusters) { |
2121 | if (*clusters != orig_clusters) { |
2027 | cairo_text_cluster_free (*clusters); |
2122 | cairo_text_cluster_free (*clusters); |
2028 | *clusters = orig_clusters; |
2123 | *clusters = orig_clusters; |
2029 | } |
2124 | } |
2030 | } |
2125 | } |
2031 | } |
2126 | } |
2032 | 2127 | ||
2033 | return _cairo_scaled_font_set_error (scaled_font, status); |
2128 | return _cairo_scaled_font_set_error (scaled_font, status); |
2034 | 2129 | ||
2035 | BAIL: /* error with input arguments */ |
2130 | BAIL: /* error with input arguments */ |
2036 | 2131 | ||
2037 | if (num_glyphs) |
2132 | if (num_glyphs) |
2038 | *num_glyphs = 0; |
2133 | *num_glyphs = 0; |
2039 | 2134 | ||
2040 | if (num_clusters) |
2135 | if (num_clusters) |
2041 | *num_clusters = 0; |
2136 | *num_clusters = 0; |
2042 | 2137 | ||
2043 | return status; |
2138 | return status; |
2044 | } |
2139 | } |
2045 | slim_hidden_def (cairo_scaled_font_text_to_glyphs); |
2140 | slim_hidden_def (cairo_scaled_font_text_to_glyphs); |
2046 | 2141 | ||
2047 | static inline cairo_bool_t |
2142 | static inline cairo_bool_t |
2048 | _range_contains_glyph (const cairo_box_t *extents, |
2143 | _range_contains_glyph (const cairo_box_t *extents, |
2049 | cairo_fixed_t left, |
2144 | cairo_fixed_t left, |
2050 | cairo_fixed_t top, |
2145 | cairo_fixed_t top, |
2051 | cairo_fixed_t right, |
2146 | cairo_fixed_t right, |
2052 | cairo_fixed_t bottom) |
2147 | cairo_fixed_t bottom) |
2053 | { |
2148 | { |
- | 2149 | if (left == right || top == bottom) |
|
- | 2150 | return FALSE; |
|
- | 2151 | ||
2054 | return right > extents->p1.x && |
2152 | return right > extents->p1.x && |
2055 | left < extents->p2.x && |
2153 | left < extents->p2.x && |
2056 | bottom > extents->p1.y && |
2154 | bottom > extents->p1.y && |
2057 | top < extents->p2.y; |
2155 | top < extents->p2.y; |
2058 | } |
2156 | } |
- | 2157 | ||
- | 2158 | static cairo_status_t |
|
- | 2159 | _cairo_scaled_font_single_glyph_device_extents (cairo_scaled_font_t *scaled_font, |
|
- | 2160 | const cairo_glyph_t *glyph, |
|
- | 2161 | cairo_rectangle_int_t *extents) |
|
- | 2162 | { |
|
- | 2163 | cairo_scaled_glyph_t *scaled_glyph; |
|
- | 2164 | cairo_status_t status; |
|
- | 2165 | ||
- | 2166 | _cairo_scaled_font_freeze_cache (scaled_font); |
|
- | 2167 | status = _cairo_scaled_glyph_lookup (scaled_font, |
|
- | 2168 | glyph->index, |
|
- | 2169 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
|
- | 2170 | &scaled_glyph); |
|
- | 2171 | if (likely (status == CAIRO_STATUS_SUCCESS)) { |
|
- | 2172 | cairo_bool_t round_xy = _cairo_font_options_get_round_glyph_positions (&scaled_font->options) == CAIRO_ROUND_GLYPH_POS_ON; |
|
- | 2173 | cairo_box_t box; |
|
- | 2174 | cairo_fixed_t v; |
|
- | 2175 | ||
- | 2176 | if (round_xy) |
|
- | 2177 | v = _cairo_fixed_from_int (_cairo_lround (glyph->x)); |
|
- | 2178 | else |
|
- | 2179 | v = _cairo_fixed_from_double (glyph->x); |
|
- | 2180 | box.p1.x = v + scaled_glyph->bbox.p1.x; |
|
- | 2181 | box.p2.x = v + scaled_glyph->bbox.p2.x; |
|
- | 2182 | ||
- | 2183 | if (round_xy) |
|
- | 2184 | v = _cairo_fixed_from_int (_cairo_lround (glyph->y)); |
|
- | 2185 | else |
|
- | 2186 | v = _cairo_fixed_from_double (glyph->y); |
|
- | 2187 | box.p1.y = v + scaled_glyph->bbox.p1.y; |
|
- | 2188 | box.p2.y = v + scaled_glyph->bbox.p2.y; |
|
- | 2189 | ||
- | 2190 | _cairo_box_round_to_rectangle (&box, extents); |
|
- | 2191 | } |
|
- | 2192 | _cairo_scaled_font_thaw_cache (scaled_font); |
|
- | 2193 | return status; |
|
- | 2194 | } |
|
2059 | 2195 | ||
2060 | /* |
2196 | /* |
2061 | * Compute a device-space bounding box for the glyphs. |
2197 | * Compute a device-space bounding box for the glyphs. |
2062 | */ |
2198 | */ |
2063 | cairo_status_t |
2199 | cairo_status_t |
2064 | _cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font, |
2200 | _cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font, |
2065 | const cairo_glyph_t *glyphs, |
2201 | const cairo_glyph_t *glyphs, |
2066 | int num_glyphs, |
2202 | int num_glyphs, |
2067 | cairo_rectangle_int_t *extents, |
2203 | cairo_rectangle_int_t *extents, |
2068 | cairo_bool_t *overlap_out) |
2204 | cairo_bool_t *overlap_out) |
2069 | { |
2205 | { |
2070 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
2206 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
2071 | cairo_box_t box = { { INT_MAX, INT_MAX }, { INT_MIN, INT_MIN }}; |
2207 | cairo_box_t box = { { INT_MAX, INT_MAX }, { INT_MIN, INT_MIN }}; |
2072 | cairo_scaled_glyph_t *glyph_cache[64]; |
2208 | cairo_scaled_glyph_t *glyph_cache[64]; |
2073 | cairo_bool_t overlap = overlap_out ? FALSE : TRUE; |
2209 | cairo_bool_t overlap = overlap_out ? FALSE : TRUE; |
- | 2210 | cairo_round_glyph_positions_t round_glyph_positions = _cairo_font_options_get_round_glyph_positions (&scaled_font->options); |
|
2074 | int i; |
2211 | int i; |
2075 | 2212 | ||
2076 | if (unlikely (scaled_font->status)) |
2213 | if (unlikely (scaled_font->status)) |
2077 | return scaled_font->status; |
2214 | return scaled_font->status; |
- | 2215 | ||
- | 2216 | if (num_glyphs == 1) { |
|
- | 2217 | if (overlap_out) |
|
- | 2218 | *overlap_out = FALSE; |
|
- | 2219 | return _cairo_scaled_font_single_glyph_device_extents (scaled_font, |
|
- | 2220 | glyphs, |
|
- | 2221 | extents); |
|
- | 2222 | } |
|
2078 | 2223 | ||
2079 | _cairo_scaled_font_freeze_cache (scaled_font); |
2224 | _cairo_scaled_font_freeze_cache (scaled_font); |
2080 | 2225 | ||
2081 | memset (glyph_cache, 0, sizeof (glyph_cache)); |
2226 | memset (glyph_cache, 0, sizeof (glyph_cache)); |
2082 | 2227 | ||
2083 | for (i = 0; i < num_glyphs; i++) { |
2228 | for (i = 0; i < num_glyphs; i++) { |
2084 | cairo_scaled_glyph_t *scaled_glyph; |
2229 | cairo_scaled_glyph_t *scaled_glyph; |
2085 | cairo_fixed_t x, y, x1, y1, x2, y2; |
2230 | cairo_fixed_t x, y, x1, y1, x2, y2; |
2086 | int cache_index = glyphs[i].index % ARRAY_LENGTH (glyph_cache); |
2231 | int cache_index = glyphs[i].index % ARRAY_LENGTH (glyph_cache); |
2087 | 2232 | ||
2088 | scaled_glyph = glyph_cache[cache_index]; |
2233 | scaled_glyph = glyph_cache[cache_index]; |
2089 | if (scaled_glyph == NULL || |
2234 | if (scaled_glyph == NULL || |
2090 | _cairo_scaled_glyph_index (scaled_glyph) != glyphs[i].index) |
2235 | _cairo_scaled_glyph_index (scaled_glyph) != glyphs[i].index) |
2091 | { |
2236 | { |
2092 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2237 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2093 | glyphs[i].index, |
2238 | glyphs[i].index, |
2094 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
2239 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
2095 | &scaled_glyph); |
2240 | &scaled_glyph); |
2096 | if (unlikely (status)) |
2241 | if (unlikely (status)) |
2097 | break; |
2242 | break; |
2098 | 2243 | ||
2099 | glyph_cache[cache_index] = scaled_glyph; |
2244 | glyph_cache[cache_index] = scaled_glyph; |
2100 | } |
2245 | } |
- | 2246 | ||
- | 2247 | if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON) |
|
- | 2248 | x = _cairo_fixed_from_int (_cairo_lround (glyphs[i].x)); |
|
2101 | 2249 | else |
|
2102 | x = _cairo_fixed_from_double (glyphs[i].x); |
2250 | x = _cairo_fixed_from_double (glyphs[i].x); |
2103 | x1 = x + scaled_glyph->bbox.p1.x; |
2251 | x1 = x + scaled_glyph->bbox.p1.x; |
2104 | x2 = x + scaled_glyph->bbox.p2.x; |
2252 | x2 = x + scaled_glyph->bbox.p2.x; |
- | 2253 | ||
- | 2254 | if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON) |
|
- | 2255 | y = _cairo_fixed_from_int (_cairo_lround (glyphs[i].y)); |
|
2105 | 2256 | else |
|
2106 | y = _cairo_fixed_from_double (glyphs[i].y); |
2257 | y = _cairo_fixed_from_double (glyphs[i].y); |
2107 | y1 = y + scaled_glyph->bbox.p1.y; |
2258 | y1 = y + scaled_glyph->bbox.p1.y; |
2108 | y2 = y + scaled_glyph->bbox.p2.y; |
2259 | y2 = y + scaled_glyph->bbox.p2.y; |
2109 | 2260 | ||
2110 | if (overlap == FALSE) |
2261 | if (overlap == FALSE) |
2111 | overlap = _range_contains_glyph (&box, x1, y1, x2, y2); |
2262 | overlap = _range_contains_glyph (&box, x1, y1, x2, y2); |
2112 | 2263 | ||
2113 | if (x1 < box.p1.x) box.p1.x = x1; |
2264 | if (x1 < box.p1.x) box.p1.x = x1; |
2114 | if (x2 > box.p2.x) box.p2.x = x2; |
2265 | if (x2 > box.p2.x) box.p2.x = x2; |
2115 | if (y1 < box.p1.y) box.p1.y = y1; |
2266 | if (y1 < box.p1.y) box.p1.y = y1; |
2116 | if (y2 > box.p2.y) box.p2.y = y2; |
2267 | if (y2 > box.p2.y) box.p2.y = y2; |
2117 | } |
2268 | } |
2118 | 2269 | ||
2119 | _cairo_scaled_font_thaw_cache (scaled_font); |
2270 | _cairo_scaled_font_thaw_cache (scaled_font); |
2120 | if (unlikely (status)) |
2271 | if (unlikely (status)) |
2121 | return _cairo_scaled_font_set_error (scaled_font, status); |
2272 | return _cairo_scaled_font_set_error (scaled_font, status); |
2122 | 2273 | ||
2123 | if (box.p1.x < box.p2.x) { |
2274 | if (box.p1.x < box.p2.x) { |
2124 | _cairo_box_round_to_rectangle (&box, extents); |
2275 | _cairo_box_round_to_rectangle (&box, extents); |
2125 | } else { |
2276 | } else { |
2126 | extents->x = extents->y = 0; |
2277 | extents->x = extents->y = 0; |
2127 | extents->width = extents->height = 0; |
2278 | extents->width = extents->height = 0; |
2128 | } |
2279 | } |
2129 | 2280 | ||
2130 | if (overlap_out != NULL) |
2281 | if (overlap_out != NULL) |
2131 | *overlap_out = overlap; |
2282 | *overlap_out = overlap; |
2132 | 2283 | ||
2133 | return CAIRO_STATUS_SUCCESS; |
2284 | return CAIRO_STATUS_SUCCESS; |
2134 | } |
2285 | } |
2135 | 2286 | ||
2136 | void |
2287 | cairo_bool_t |
2137 | _cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t *scaled_font, |
2288 | _cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t *scaled_font, |
2138 | const cairo_glyph_t *glyphs, |
2289 | const cairo_glyph_t *glyphs, |
2139 | int num_glyphs, |
2290 | int num_glyphs, |
2140 | cairo_rectangle_int_t *extents) |
2291 | cairo_rectangle_int_t *extents) |
2141 | { |
2292 | { |
2142 | double x0 = HUGE_VAL, x1 = -HUGE_VAL; |
- | |
2143 | double y0 = HUGE_VAL, y1 = -HUGE_VAL; |
2293 | double x0, x1, y0, y1, pad; |
2144 | int i; |
2294 | int i; |
- | 2295 | ||
- | 2296 | /* If any of the factors are suspect (i.e. the font is broken), bail */ |
|
- | 2297 | if (scaled_font->fs_extents.max_x_advance == 0 || |
|
- | 2298 | scaled_font->fs_extents.height == 0 || |
|
- | 2299 | scaled_font->max_scale == 0) |
|
- | 2300 | { |
|
- | 2301 | return FALSE; |
|
- | 2302 | } |
|
- | 2303 | ||
- | 2304 | assert (num_glyphs); |
|
- | 2305 | ||
- | 2306 | x0 = x1 = glyphs[0].x; |
|
2145 | 2307 | y0 = y1 = glyphs[0].y; |
|
2146 | for (i = 0; i < num_glyphs; i++) { |
2308 | for (i = 1; i < num_glyphs; i++) { |
2147 | double g; |
2309 | double g; |
2148 | 2310 | ||
2149 | g = glyphs[i].x; |
2311 | g = glyphs[i].x; |
2150 | if (g < x0) x0 = g; |
2312 | if (g < x0) x0 = g; |
2151 | if (g > x1) x1 = g; |
2313 | if (g > x1) x1 = g; |
2152 | 2314 | ||
2153 | g = glyphs[i].y; |
2315 | g = glyphs[i].y; |
2154 | if (g < y0) y0 = g; |
2316 | if (g < y0) y0 = g; |
2155 | if (g > y1) y1 = g; |
2317 | if (g > y1) y1 = g; |
2156 | } |
2318 | } |
2157 | - | ||
2158 | if (x0 <= x1 && y0 <= y1) { |
2319 | |
2159 | extents->x = floor (x0 - scaled_font->extents.max_x_advance); |
2320 | pad = MAX(scaled_font->fs_extents.max_x_advance, |
2160 | extents->width = ceil (x1 + scaled_font->extents.max_x_advance); |
2321 | scaled_font->fs_extents.height); |
2161 | extents->width -= extents->x; |
2322 | pad *= scaled_font->max_scale; |
2162 | 2323 | ||
2163 | extents->y = floor (y0 - scaled_font->extents.ascent); |
2324 | extents->x = floor (x0 - pad); |
2164 | extents->height = ceil (y1 + scaled_font->extents.descent); |
- | |
2165 | extents->height -= extents->y; |
- | |
2166 | } else { |
2325 | extents->width = ceil (x1 + pad) - extents->x; |
2167 | extents->x = extents->y = 0; |
2326 | extents->y = floor (y0 - pad); |
2168 | extents->width = extents->height = 0; |
2327 | extents->height = ceil (y1 + pad) - extents->y; |
2169 | } |
2328 | return TRUE; |
- | 2329 | } |
|
- | 2330 | ||
2170 | } |
2331 | #if 0 |
2171 | 2332 | /* XXX win32 */ |
|
2172 | cairo_status_t |
2333 | cairo_status_t |
2173 | _cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font, |
2334 | _cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font, |
2174 | cairo_operator_t op, |
2335 | cairo_operator_t op, |
2175 | const cairo_pattern_t *pattern, |
2336 | const cairo_pattern_t *pattern, |
2176 | cairo_surface_t *surface, |
2337 | cairo_surface_t *surface, |
2177 | int source_x, |
2338 | int source_x, |
2178 | int source_y, |
2339 | int source_y, |
2179 | int dest_x, |
2340 | int dest_x, |
2180 | int dest_y, |
2341 | int dest_y, |
2181 | unsigned int width, |
2342 | unsigned int width, |
2182 | unsigned int height, |
2343 | unsigned int height, |
2183 | cairo_glyph_t *glyphs, |
2344 | cairo_glyph_t *glyphs, |
2184 | int num_glyphs, |
2345 | int num_glyphs, |
2185 | cairo_region_t *clip_region) |
2346 | cairo_region_t *clip_region) |
2186 | { |
2347 | { |
2187 | cairo_status_t status; |
2348 | cairo_int_status_t status; |
2188 | cairo_surface_t *mask = NULL; |
2349 | cairo_surface_t *mask = NULL; |
2189 | cairo_format_t mask_format = CAIRO_FORMAT_A1; /* shut gcc up */ |
2350 | cairo_format_t mask_format = CAIRO_FORMAT_A1; /* shut gcc up */ |
2190 | cairo_surface_pattern_t mask_pattern; |
2351 | cairo_surface_pattern_t mask_pattern; |
2191 | int i; |
2352 | int i; |
2192 | 2353 | ||
2193 | /* These operators aren't interpreted the same way by the backends; |
2354 | /* These operators aren't interpreted the same way by the backends; |
2194 | * they are implemented in terms of other operators in cairo-gstate.c |
2355 | * they are implemented in terms of other operators in cairo-gstate.c |
2195 | */ |
2356 | */ |
2196 | assert (op != CAIRO_OPERATOR_SOURCE && op != CAIRO_OPERATOR_CLEAR); |
2357 | assert (op != CAIRO_OPERATOR_SOURCE && op != CAIRO_OPERATOR_CLEAR); |
2197 | 2358 | ||
2198 | if (scaled_font->status) |
2359 | if (scaled_font->status) |
2199 | return scaled_font->status; |
2360 | return scaled_font->status; |
2200 | 2361 | ||
2201 | if (!num_glyphs) |
2362 | if (!num_glyphs) |
2202 | return CAIRO_STATUS_SUCCESS; |
2363 | return CAIRO_STATUS_SUCCESS; |
2203 | 2364 | ||
2204 | if (scaled_font->backend->show_glyphs != NULL) { |
2365 | if (scaled_font->backend->show_glyphs != NULL) { |
2205 | int remaining_glyphs = num_glyphs; |
2366 | int remaining_glyphs = num_glyphs; |
2206 | status = scaled_font->backend->show_glyphs (scaled_font, |
2367 | status = scaled_font->backend->show_glyphs (scaled_font, |
2207 | op, pattern, |
2368 | op, pattern, |
2208 | surface, |
2369 | surface, |
2209 | source_x, source_y, |
2370 | source_x, source_y, |
2210 | dest_x, dest_y, |
2371 | dest_x, dest_y, |
2211 | width, height, |
2372 | width, height, |
2212 | glyphs, num_glyphs, |
2373 | glyphs, num_glyphs, |
2213 | clip_region, |
2374 | clip_region, |
2214 | &remaining_glyphs); |
2375 | &remaining_glyphs); |
2215 | glyphs += num_glyphs - remaining_glyphs; |
2376 | glyphs += num_glyphs - remaining_glyphs; |
2216 | num_glyphs = remaining_glyphs; |
2377 | num_glyphs = remaining_glyphs; |
2217 | if (remaining_glyphs == 0) |
2378 | if (remaining_glyphs == 0) |
2218 | status = CAIRO_STATUS_SUCCESS; |
2379 | status = CAIRO_INT_STATUS_SUCCESS; |
2219 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
2380 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
2220 | return _cairo_scaled_font_set_error (scaled_font, status); |
2381 | return _cairo_scaled_font_set_error (scaled_font, status); |
2221 | } |
2382 | } |
2222 | 2383 | ||
2223 | /* Font display routine either does not exist or failed. */ |
2384 | /* Font display routine either does not exist or failed. */ |
2224 | 2385 | ||
2225 | _cairo_scaled_font_freeze_cache (scaled_font); |
2386 | _cairo_scaled_font_freeze_cache (scaled_font); |
2226 | 2387 | ||
2227 | for (i = 0; i < num_glyphs; i++) { |
2388 | for (i = 0; i < num_glyphs; i++) { |
2228 | int x, y; |
2389 | int x, y; |
2229 | cairo_image_surface_t *glyph_surface; |
2390 | cairo_image_surface_t *glyph_surface; |
2230 | cairo_scaled_glyph_t *scaled_glyph; |
2391 | cairo_scaled_glyph_t *scaled_glyph; |
2231 | 2392 | ||
2232 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2393 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2233 | glyphs[i].index, |
2394 | glyphs[i].index, |
2234 | CAIRO_SCALED_GLYPH_INFO_SURFACE, |
2395 | CAIRO_SCALED_GLYPH_INFO_SURFACE, |
2235 | &scaled_glyph); |
2396 | &scaled_glyph); |
2236 | 2397 | ||
2237 | if (unlikely (status)) |
2398 | if (unlikely (status)) |
2238 | goto CLEANUP_MASK; |
2399 | goto CLEANUP_MASK; |
2239 | 2400 | ||
2240 | glyph_surface = scaled_glyph->surface; |
2401 | glyph_surface = scaled_glyph->surface; |
2241 | 2402 | ||
2242 | /* To start, create the mask using the format from the first |
2403 | /* To start, create the mask using the format from the first |
2243 | * glyph. Later we'll deal with different formats. */ |
2404 | * glyph. Later we'll deal with different formats. */ |
2244 | if (mask == NULL) { |
2405 | if (mask == NULL) { |
2245 | mask_format = glyph_surface->format; |
2406 | mask_format = glyph_surface->format; |
2246 | mask = cairo_image_surface_create (mask_format, width, height); |
2407 | mask = cairo_image_surface_create (mask_format, width, height); |
2247 | status = mask->status; |
2408 | status = mask->status; |
2248 | if (unlikely (status)) |
2409 | if (unlikely (status)) |
2249 | goto CLEANUP_MASK; |
2410 | goto CLEANUP_MASK; |
2250 | } |
2411 | } |
2251 | 2412 | ||
2252 | /* If we have glyphs of different formats, we "upgrade" the mask |
2413 | /* If we have glyphs of different formats, we "upgrade" the mask |
2253 | * to the wider of the formats. */ |
2414 | * to the wider of the formats. */ |
2254 | if (glyph_surface->format != mask_format && |
2415 | if (glyph_surface->format != mask_format && |
2255 | _cairo_format_bits_per_pixel (mask_format) < |
2416 | _cairo_format_bits_per_pixel (mask_format) < |
2256 | _cairo_format_bits_per_pixel (glyph_surface->format) ) |
2417 | _cairo_format_bits_per_pixel (glyph_surface->format) ) |
2257 | { |
2418 | { |
2258 | cairo_surface_t *new_mask; |
2419 | cairo_surface_t *new_mask; |
2259 | 2420 | ||
2260 | switch (glyph_surface->format) { |
2421 | switch (glyph_surface->format) { |
2261 | case CAIRO_FORMAT_ARGB32: |
2422 | case CAIRO_FORMAT_ARGB32: |
2262 | case CAIRO_FORMAT_A8: |
2423 | case CAIRO_FORMAT_A8: |
2263 | case CAIRO_FORMAT_A1: |
2424 | case CAIRO_FORMAT_A1: |
2264 | mask_format = glyph_surface->format; |
2425 | mask_format = glyph_surface->format; |
2265 | break; |
2426 | break; |
2266 | case CAIRO_FORMAT_RGB16_565: |
2427 | case CAIRO_FORMAT_RGB16_565: |
2267 | case CAIRO_FORMAT_RGB24: |
2428 | case CAIRO_FORMAT_RGB24: |
- | 2429 | case CAIRO_FORMAT_RGB30: |
|
2268 | case CAIRO_FORMAT_INVALID: |
2430 | case CAIRO_FORMAT_INVALID: |
2269 | default: |
2431 | default: |
2270 | ASSERT_NOT_REACHED; |
2432 | ASSERT_NOT_REACHED; |
2271 | mask_format = CAIRO_FORMAT_ARGB32; |
2433 | mask_format = CAIRO_FORMAT_ARGB32; |
2272 | break; |
2434 | break; |
2273 | } |
2435 | } |
2274 | 2436 | ||
2275 | new_mask = cairo_image_surface_create (mask_format, width, height); |
2437 | new_mask = cairo_image_surface_create (mask_format, width, height); |
2276 | status = new_mask->status; |
2438 | status = new_mask->status; |
2277 | if (unlikely (status)) { |
2439 | if (unlikely (status)) { |
2278 | cairo_surface_destroy (new_mask); |
2440 | cairo_surface_destroy (new_mask); |
2279 | goto CLEANUP_MASK; |
2441 | goto CLEANUP_MASK; |
2280 | } |
2442 | } |
2281 | 2443 | ||
2282 | _cairo_pattern_init_for_surface (&mask_pattern, mask); |
2444 | _cairo_pattern_init_for_surface (&mask_pattern, mask); |
2283 | /* Note that we only upgrade masks, i.e. A1 -> A8 -> ARGB32, so there is |
2445 | /* Note that we only upgrade masks, i.e. A1 -> A8 -> ARGB32, so there is |
2284 | * never any component alpha here. |
2446 | * never any component alpha here. |
2285 | */ |
2447 | */ |
2286 | status = _cairo_surface_composite (CAIRO_OPERATOR_ADD, |
2448 | status = _cairo_surface_composite (CAIRO_OPERATOR_ADD, |
2287 | &_cairo_pattern_white.base, |
2449 | &_cairo_pattern_white.base, |
2288 | &mask_pattern.base, |
2450 | &mask_pattern.base, |
2289 | new_mask, |
2451 | new_mask, |
2290 | 0, 0, |
2452 | 0, 0, |
2291 | 0, 0, |
2453 | 0, 0, |
2292 | 0, 0, |
2454 | 0, 0, |
2293 | width, height, |
2455 | width, height, |
2294 | NULL); |
2456 | NULL); |
2295 | 2457 | ||
2296 | _cairo_pattern_fini (&mask_pattern.base); |
2458 | _cairo_pattern_fini (&mask_pattern.base); |
2297 | 2459 | ||
2298 | if (unlikely (status)) { |
2460 | if (unlikely (status)) { |
2299 | cairo_surface_destroy (new_mask); |
2461 | cairo_surface_destroy (new_mask); |
2300 | goto CLEANUP_MASK; |
2462 | goto CLEANUP_MASK; |
2301 | } |
2463 | } |
2302 | 2464 | ||
2303 | cairo_surface_destroy (mask); |
2465 | cairo_surface_destroy (mask); |
2304 | mask = new_mask; |
2466 | mask = new_mask; |
2305 | } |
2467 | } |
2306 | 2468 | ||
2307 | if (glyph_surface->width && glyph_surface->height) { |
2469 | if (glyph_surface->width && glyph_surface->height) { |
2308 | cairo_surface_pattern_t glyph_pattern; |
2470 | cairo_surface_pattern_t glyph_pattern; |
2309 | 2471 | ||
2310 | /* round glyph locations to the nearest pixel */ |
2472 | /* round glyph locations to the nearest pixel */ |
2311 | /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */ |
2473 | /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */ |
2312 | x = _cairo_lround (glyphs[i].x - |
2474 | x = _cairo_lround (glyphs[i].x - |
2313 | glyph_surface->base.device_transform.x0); |
2475 | glyph_surface->base.device_transform.x0); |
2314 | y = _cairo_lround (glyphs[i].y - |
2476 | y = _cairo_lround (glyphs[i].y - |
2315 | glyph_surface->base.device_transform.y0); |
2477 | glyph_surface->base.device_transform.y0); |
2316 | 2478 | ||
2317 | _cairo_pattern_init_for_surface (&glyph_pattern, |
2479 | _cairo_pattern_init_for_surface (&glyph_pattern, |
2318 | &glyph_surface->base); |
2480 | &glyph_surface->base); |
2319 | if (mask_format == CAIRO_FORMAT_ARGB32) |
2481 | if (mask_format == CAIRO_FORMAT_ARGB32) |
2320 | glyph_pattern.base.has_component_alpha = TRUE; |
2482 | glyph_pattern.base.has_component_alpha = TRUE; |
2321 | 2483 | ||
2322 | status = _cairo_surface_composite (CAIRO_OPERATOR_ADD, |
2484 | status = _cairo_surface_composite (CAIRO_OPERATOR_ADD, |
2323 | &_cairo_pattern_white.base, |
2485 | &_cairo_pattern_white.base, |
2324 | &glyph_pattern.base, |
2486 | &glyph_pattern.base, |
2325 | mask, |
2487 | mask, |
2326 | 0, 0, |
2488 | 0, 0, |
2327 | 0, 0, |
2489 | 0, 0, |
2328 | x - dest_x, y - dest_y, |
2490 | x - dest_x, y - dest_y, |
2329 | glyph_surface->width, |
2491 | glyph_surface->width, |
2330 | glyph_surface->height, |
2492 | glyph_surface->height, |
2331 | NULL); |
2493 | NULL); |
2332 | 2494 | ||
2333 | _cairo_pattern_fini (&glyph_pattern.base); |
2495 | _cairo_pattern_fini (&glyph_pattern.base); |
2334 | 2496 | ||
2335 | if (unlikely (status)) |
2497 | if (unlikely (status)) |
2336 | goto CLEANUP_MASK; |
2498 | goto CLEANUP_MASK; |
2337 | } |
2499 | } |
2338 | } |
2500 | } |
2339 | 2501 | ||
2340 | _cairo_pattern_init_for_surface (&mask_pattern, mask); |
2502 | _cairo_pattern_init_for_surface (&mask_pattern, mask); |
2341 | if (mask_format == CAIRO_FORMAT_ARGB32) |
2503 | if (mask_format == CAIRO_FORMAT_ARGB32) |
2342 | mask_pattern.base.has_component_alpha = TRUE; |
2504 | mask_pattern.base.has_component_alpha = TRUE; |
2343 | 2505 | ||
2344 | status = _cairo_surface_composite (op, pattern, &mask_pattern.base, |
2506 | status = _cairo_surface_composite (op, pattern, &mask_pattern.base, |
2345 | surface, |
2507 | surface, |
2346 | source_x, source_y, |
2508 | source_x, source_y, |
2347 | 0, 0, |
2509 | 0, 0, |
2348 | dest_x, dest_y, |
2510 | dest_x, dest_y, |
2349 | width, height, |
2511 | width, height, |
2350 | clip_region); |
2512 | clip_region); |
2351 | 2513 | ||
2352 | _cairo_pattern_fini (&mask_pattern.base); |
2514 | _cairo_pattern_fini (&mask_pattern.base); |
2353 | 2515 | ||
2354 | CLEANUP_MASK: |
2516 | CLEANUP_MASK: |
2355 | _cairo_scaled_font_thaw_cache (scaled_font); |
2517 | _cairo_scaled_font_thaw_cache (scaled_font); |
2356 | 2518 | ||
2357 | if (mask != NULL) |
2519 | if (mask != NULL) |
2358 | cairo_surface_destroy (mask); |
2520 | cairo_surface_destroy (mask); |
2359 | return _cairo_scaled_font_set_error (scaled_font, status); |
2521 | return _cairo_scaled_font_set_error (scaled_font, status); |
2360 | } |
2522 | } |
- | 2523 | #endif |
|
2361 | 2524 | ||
2362 | /* Add a single-device-unit rectangle to a path. */ |
2525 | /* Add a single-device-unit rectangle to a path. */ |
2363 | static cairo_status_t |
2526 | static cairo_status_t |
2364 | _add_unit_rectangle_to_path (cairo_path_fixed_t *path, |
2527 | _add_unit_rectangle_to_path (cairo_path_fixed_t *path, |
2365 | cairo_fixed_t x, |
2528 | cairo_fixed_t x, |
2366 | cairo_fixed_t y) |
2529 | cairo_fixed_t y) |
2367 | { |
2530 | { |
2368 | cairo_status_t status; |
2531 | cairo_status_t status; |
2369 | 2532 | ||
2370 | status = _cairo_path_fixed_move_to (path, x, y); |
2533 | status = _cairo_path_fixed_move_to (path, x, y); |
2371 | if (unlikely (status)) |
2534 | if (unlikely (status)) |
2372 | return status; |
2535 | return status; |
2373 | 2536 | ||
2374 | status = _cairo_path_fixed_rel_line_to (path, |
2537 | status = _cairo_path_fixed_rel_line_to (path, |
2375 | _cairo_fixed_from_int (1), |
2538 | _cairo_fixed_from_int (1), |
2376 | _cairo_fixed_from_int (0)); |
2539 | _cairo_fixed_from_int (0)); |
2377 | if (unlikely (status)) |
2540 | if (unlikely (status)) |
2378 | return status; |
2541 | return status; |
2379 | 2542 | ||
2380 | status = _cairo_path_fixed_rel_line_to (path, |
2543 | status = _cairo_path_fixed_rel_line_to (path, |
2381 | _cairo_fixed_from_int (0), |
2544 | _cairo_fixed_from_int (0), |
2382 | _cairo_fixed_from_int (1)); |
2545 | _cairo_fixed_from_int (1)); |
2383 | if (unlikely (status)) |
2546 | if (unlikely (status)) |
2384 | return status; |
2547 | return status; |
2385 | 2548 | ||
2386 | status = _cairo_path_fixed_rel_line_to (path, |
2549 | status = _cairo_path_fixed_rel_line_to (path, |
2387 | _cairo_fixed_from_int (-1), |
2550 | _cairo_fixed_from_int (-1), |
2388 | _cairo_fixed_from_int (0)); |
2551 | _cairo_fixed_from_int (0)); |
2389 | if (unlikely (status)) |
2552 | if (unlikely (status)) |
2390 | return status; |
2553 | return status; |
2391 | 2554 | ||
2392 | return _cairo_path_fixed_close_path (path); |
2555 | return _cairo_path_fixed_close_path (path); |
2393 | } |
2556 | } |
2394 | 2557 | ||
2395 | /** |
2558 | /** |
2396 | * _trace_mask_to_path: |
2559 | * _trace_mask_to_path: |
2397 | * @bitmap: An alpha mask (either %CAIRO_FORMAT_A1 or %CAIRO_FORMAT_A8) |
2560 | * @bitmap: An alpha mask (either %CAIRO_FORMAT_A1 or %CAIRO_FORMAT_A8) |
2398 | * @path: An initialized path to hold the result |
2561 | * @path: An initialized path to hold the result |
2399 | * |
2562 | * |
2400 | * Given a mask surface, (an alpha image), fill out the provided path |
2563 | * Given a mask surface, (an alpha image), fill out the provided path |
2401 | * so that when filled it would result in something that approximates |
2564 | * so that when filled it would result in something that approximates |
2402 | * the mask. |
2565 | * the mask. |
2403 | * |
2566 | * |
2404 | * Note: The current tracing code here is extremely primitive. It |
2567 | * Note: The current tracing code here is extremely primitive. It |
2405 | * operates only on an A1 surface, (converting an A8 surface to A1 if |
2568 | * operates only on an A1 surface, (converting an A8 surface to A1 if |
2406 | * necessary), and performs the tracing by drawing a little square |
2569 | * necessary), and performs the tracing by drawing a little square |
2407 | * around each pixel that is on in the mask. We do not pretend that |
2570 | * around each pixel that is on in the mask. We do not pretend that |
2408 | * this is a high-quality result. But we are leaving it up to someone |
2571 | * this is a high-quality result. But we are leaving it up to someone |
2409 | * who cares enough about getting a better result to implement |
2572 | * who cares enough about getting a better result to implement |
2410 | * something more sophisticated. |
2573 | * something more sophisticated. |
2411 | **/ |
2574 | **/ |
2412 | static cairo_status_t |
2575 | static cairo_status_t |
2413 | _trace_mask_to_path (cairo_image_surface_t *mask, |
2576 | _trace_mask_to_path (cairo_image_surface_t *mask, |
2414 | cairo_path_fixed_t *path, |
2577 | cairo_path_fixed_t *path, |
2415 | double tx, double ty) |
2578 | double tx, double ty) |
2416 | { |
2579 | { |
2417 | const uint8_t *row; |
2580 | const uint8_t *row; |
2418 | int rows, cols, bytes_per_row; |
2581 | int rows, cols, bytes_per_row; |
2419 | int x, y, bit; |
2582 | int x, y, bit; |
2420 | double xoff, yoff; |
2583 | double xoff, yoff; |
2421 | cairo_fixed_t x0, y0; |
2584 | cairo_fixed_t x0, y0; |
2422 | cairo_fixed_t px, py; |
2585 | cairo_fixed_t px, py; |
2423 | cairo_status_t status; |
2586 | cairo_status_t status; |
2424 | 2587 | ||
2425 | mask = _cairo_image_surface_coerce_to_format (mask, CAIRO_FORMAT_A1); |
2588 | mask = _cairo_image_surface_coerce_to_format (mask, CAIRO_FORMAT_A1); |
2426 | status = mask->base.status; |
2589 | status = mask->base.status; |
2427 | if (unlikely (status)) |
2590 | if (unlikely (status)) |
2428 | return status; |
2591 | return status; |
2429 | 2592 | ||
2430 | cairo_surface_get_device_offset (&mask->base, &xoff, &yoff); |
2593 | cairo_surface_get_device_offset (&mask->base, &xoff, &yoff); |
2431 | x0 = _cairo_fixed_from_double (tx - xoff); |
2594 | x0 = _cairo_fixed_from_double (tx - xoff); |
2432 | y0 = _cairo_fixed_from_double (ty - yoff); |
2595 | y0 = _cairo_fixed_from_double (ty - yoff); |
2433 | 2596 | ||
2434 | bytes_per_row = (mask->width + 7) / 8; |
2597 | bytes_per_row = (mask->width + 7) / 8; |
2435 | row = mask->data; |
2598 | row = mask->data; |
2436 | for (y = 0, rows = mask->height; rows--; row += mask->stride, y++) { |
2599 | for (y = 0, rows = mask->height; rows--; row += mask->stride, y++) { |
2437 | const uint8_t *byte_ptr = row; |
2600 | const uint8_t *byte_ptr = row; |
2438 | x = 0; |
2601 | x = 0; |
2439 | py = _cairo_fixed_from_int (y); |
2602 | py = _cairo_fixed_from_int (y); |
2440 | for (cols = bytes_per_row; cols--; ) { |
2603 | for (cols = bytes_per_row; cols--; ) { |
2441 | uint8_t byte = *byte_ptr++; |
2604 | uint8_t byte = *byte_ptr++; |
2442 | if (byte == 0) { |
2605 | if (byte == 0) { |
2443 | x += 8; |
2606 | x += 8; |
2444 | continue; |
2607 | continue; |
2445 | } |
2608 | } |
2446 | 2609 | ||
2447 | byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte); |
2610 | byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte); |
2448 | for (bit = 1 << 7; bit && x < mask->width; bit >>= 1, x++) { |
2611 | for (bit = 1 << 7; bit && x < mask->width; bit >>= 1, x++) { |
2449 | if (byte & bit) { |
2612 | if (byte & bit) { |
2450 | px = _cairo_fixed_from_int (x); |
2613 | px = _cairo_fixed_from_int (x); |
2451 | status = _add_unit_rectangle_to_path (path, |
2614 | status = _add_unit_rectangle_to_path (path, |
2452 | px + x0, |
2615 | px + x0, |
2453 | py + y0); |
2616 | py + y0); |
2454 | if (unlikely (status)) |
2617 | if (unlikely (status)) |
2455 | goto BAIL; |
2618 | goto BAIL; |
2456 | } |
2619 | } |
2457 | } |
2620 | } |
2458 | } |
2621 | } |
2459 | } |
2622 | } |
2460 | 2623 | ||
2461 | BAIL: |
2624 | BAIL: |
2462 | cairo_surface_destroy (&mask->base); |
2625 | cairo_surface_destroy (&mask->base); |
2463 | 2626 | ||
2464 | return status; |
2627 | return status; |
2465 | } |
2628 | } |
2466 | 2629 | ||
2467 | cairo_status_t |
2630 | cairo_status_t |
2468 | _cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font, |
2631 | _cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font, |
2469 | const cairo_glyph_t *glyphs, |
2632 | const cairo_glyph_t *glyphs, |
2470 | int num_glyphs, |
2633 | int num_glyphs, |
2471 | cairo_path_fixed_t *path) |
2634 | cairo_path_fixed_t *path) |
2472 | { |
2635 | { |
2473 | cairo_status_t status; |
2636 | cairo_int_status_t status; |
2474 | int i; |
2637 | int i; |
2475 | 2638 | ||
2476 | status = scaled_font->status; |
2639 | status = scaled_font->status; |
2477 | if (unlikely (status)) |
2640 | if (unlikely (status)) |
2478 | return status; |
2641 | return status; |
2479 | 2642 | ||
2480 | _cairo_scaled_font_freeze_cache (scaled_font); |
2643 | _cairo_scaled_font_freeze_cache (scaled_font); |
2481 | for (i = 0; i < num_glyphs; i++) { |
2644 | for (i = 0; i < num_glyphs; i++) { |
2482 | cairo_scaled_glyph_t *scaled_glyph; |
2645 | cairo_scaled_glyph_t *scaled_glyph; |
2483 | 2646 | ||
2484 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2647 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2485 | glyphs[i].index, |
2648 | glyphs[i].index, |
2486 | CAIRO_SCALED_GLYPH_INFO_PATH, |
2649 | CAIRO_SCALED_GLYPH_INFO_PATH, |
2487 | &scaled_glyph); |
2650 | &scaled_glyph); |
2488 | if (status == CAIRO_STATUS_SUCCESS) { |
2651 | if (status == CAIRO_INT_STATUS_SUCCESS) { |
2489 | status = _cairo_path_fixed_append (path, |
2652 | status = _cairo_path_fixed_append (path, |
2490 | scaled_glyph->path, CAIRO_DIRECTION_FORWARD, |
2653 | scaled_glyph->path, |
2491 | _cairo_fixed_from_double (glyphs[i].x), |
2654 | _cairo_fixed_from_double (glyphs[i].x), |
2492 | _cairo_fixed_from_double (glyphs[i].y)); |
2655 | _cairo_fixed_from_double (glyphs[i].y)); |
2493 | 2656 | ||
2494 | } else if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
2657 | } else if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
2495 | /* If the font is incapable of providing a path, then we'll |
2658 | /* If the font is incapable of providing a path, then we'll |
2496 | * have to trace our own from a surface. |
2659 | * have to trace our own from a surface. |
2497 | */ |
2660 | */ |
2498 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2661 | status = _cairo_scaled_glyph_lookup (scaled_font, |
2499 | glyphs[i].index, |
2662 | glyphs[i].index, |
2500 | CAIRO_SCALED_GLYPH_INFO_SURFACE, |
2663 | CAIRO_SCALED_GLYPH_INFO_SURFACE, |
2501 | &scaled_glyph); |
2664 | &scaled_glyph); |
2502 | if (unlikely (status)) |
2665 | if (unlikely (status)) |
2503 | goto BAIL; |
2666 | goto BAIL; |
2504 | 2667 | ||
2505 | status = _trace_mask_to_path (scaled_glyph->surface, path, |
2668 | status = _trace_mask_to_path (scaled_glyph->surface, path, |
2506 | glyphs[i].x, glyphs[i].y); |
2669 | glyphs[i].x, glyphs[i].y); |
2507 | } |
2670 | } |
2508 | 2671 | ||
2509 | if (unlikely (status)) |
2672 | if (unlikely (status)) |
2510 | goto BAIL; |
2673 | goto BAIL; |
2511 | } |
2674 | } |
2512 | BAIL: |
2675 | BAIL: |
2513 | _cairo_scaled_font_thaw_cache (scaled_font); |
2676 | _cairo_scaled_font_thaw_cache (scaled_font); |
2514 | 2677 | ||
2515 | return _cairo_scaled_font_set_error (scaled_font, status); |
2678 | return _cairo_scaled_font_set_error (scaled_font, status); |
2516 | } |
2679 | } |
2517 | 2680 | ||
2518 | /** |
2681 | /** |
2519 | * _cairo_scaled_glyph_set_metrics: |
2682 | * _cairo_scaled_glyph_set_metrics: |
2520 | * @scaled_glyph: a #cairo_scaled_glyph_t |
2683 | * @scaled_glyph: a #cairo_scaled_glyph_t |
2521 | * @scaled_font: a #cairo_scaled_font_t |
2684 | * @scaled_font: a #cairo_scaled_font_t |
2522 | * @fs_metrics: a #cairo_text_extents_t in font space |
2685 | * @fs_metrics: a #cairo_text_extents_t in font space |
2523 | * |
2686 | * |
2524 | * _cairo_scaled_glyph_set_metrics() stores user space metrics |
2687 | * _cairo_scaled_glyph_set_metrics() stores user space metrics |
2525 | * for the specified glyph given font space metrics. It is |
2688 | * for the specified glyph given font space metrics. It is |
2526 | * called by the font backend when initializing a glyph with |
2689 | * called by the font backend when initializing a glyph with |
2527 | * %CAIRO_SCALED_GLYPH_INFO_METRICS. |
2690 | * %CAIRO_SCALED_GLYPH_INFO_METRICS. |
2528 | **/ |
2691 | **/ |
2529 | void |
2692 | void |
2530 | _cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph, |
2693 | _cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph, |
2531 | cairo_scaled_font_t *scaled_font, |
2694 | cairo_scaled_font_t *scaled_font, |
2532 | cairo_text_extents_t *fs_metrics) |
2695 | cairo_text_extents_t *fs_metrics) |
2533 | { |
2696 | { |
2534 | cairo_bool_t first = TRUE; |
2697 | cairo_bool_t first = TRUE; |
2535 | double hm, wm; |
2698 | double hm, wm; |
2536 | double min_user_x = 0.0, max_user_x = 0.0, min_user_y = 0.0, max_user_y = 0.0; |
2699 | double min_user_x = 0.0, max_user_x = 0.0, min_user_y = 0.0, max_user_y = 0.0; |
2537 | double min_device_x = 0.0, max_device_x = 0.0, min_device_y = 0.0, max_device_y = 0.0; |
2700 | double min_device_x = 0.0, max_device_x = 0.0, min_device_y = 0.0, max_device_y = 0.0; |
2538 | double device_x_advance, device_y_advance; |
2701 | double device_x_advance, device_y_advance; |
2539 | 2702 | ||
2540 | scaled_glyph->fs_metrics = *fs_metrics; |
2703 | scaled_glyph->fs_metrics = *fs_metrics; |
2541 | 2704 | ||
2542 | for (hm = 0.0; hm <= 1.0; hm += 1.0) |
2705 | for (hm = 0.0; hm <= 1.0; hm += 1.0) |
2543 | for (wm = 0.0; wm <= 1.0; wm += 1.0) { |
2706 | for (wm = 0.0; wm <= 1.0; wm += 1.0) { |
2544 | double x, y; |
2707 | double x, y; |
2545 | 2708 | ||
2546 | /* Transform this corner to user space */ |
2709 | /* Transform this corner to user space */ |
2547 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
2710 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
2548 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
2711 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
2549 | cairo_matrix_transform_point (&scaled_font->font_matrix, |
2712 | cairo_matrix_transform_point (&scaled_font->font_matrix, |
2550 | &x, &y); |
2713 | &x, &y); |
2551 | if (first) { |
2714 | if (first) { |
2552 | min_user_x = max_user_x = x; |
2715 | min_user_x = max_user_x = x; |
2553 | min_user_y = max_user_y = y; |
2716 | min_user_y = max_user_y = y; |
2554 | } else { |
2717 | } else { |
2555 | if (x < min_user_x) min_user_x = x; |
2718 | if (x < min_user_x) min_user_x = x; |
2556 | if (x > max_user_x) max_user_x = x; |
2719 | if (x > max_user_x) max_user_x = x; |
2557 | if (y < min_user_y) min_user_y = y; |
2720 | if (y < min_user_y) min_user_y = y; |
2558 | if (y > max_user_y) max_user_y = y; |
2721 | if (y > max_user_y) max_user_y = y; |
2559 | } |
2722 | } |
2560 | 2723 | ||
2561 | /* Transform this corner to device space from glyph origin */ |
2724 | /* Transform this corner to device space from glyph origin */ |
2562 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
2725 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
2563 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
2726 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
2564 | cairo_matrix_transform_distance (&scaled_font->scale, |
2727 | cairo_matrix_transform_distance (&scaled_font->scale, |
2565 | &x, &y); |
2728 | &x, &y); |
2566 | 2729 | ||
2567 | if (first) { |
2730 | if (first) { |
2568 | min_device_x = max_device_x = x; |
2731 | min_device_x = max_device_x = x; |
2569 | min_device_y = max_device_y = y; |
2732 | min_device_y = max_device_y = y; |
2570 | } else { |
2733 | } else { |
2571 | if (x < min_device_x) min_device_x = x; |
2734 | if (x < min_device_x) min_device_x = x; |
2572 | if (x > max_device_x) max_device_x = x; |
2735 | if (x > max_device_x) max_device_x = x; |
2573 | if (y < min_device_y) min_device_y = y; |
2736 | if (y < min_device_y) min_device_y = y; |
2574 | if (y > max_device_y) max_device_y = y; |
2737 | if (y > max_device_y) max_device_y = y; |
2575 | } |
2738 | } |
2576 | first = FALSE; |
2739 | first = FALSE; |
2577 | } |
2740 | } |
2578 | scaled_glyph->metrics.x_bearing = min_user_x; |
2741 | scaled_glyph->metrics.x_bearing = min_user_x; |
2579 | scaled_glyph->metrics.y_bearing = min_user_y; |
2742 | scaled_glyph->metrics.y_bearing = min_user_y; |
2580 | scaled_glyph->metrics.width = max_user_x - min_user_x; |
2743 | scaled_glyph->metrics.width = max_user_x - min_user_x; |
2581 | scaled_glyph->metrics.height = max_user_y - min_user_y; |
2744 | scaled_glyph->metrics.height = max_user_y - min_user_y; |
2582 | 2745 | ||
2583 | scaled_glyph->metrics.x_advance = fs_metrics->x_advance; |
2746 | scaled_glyph->metrics.x_advance = fs_metrics->x_advance; |
2584 | scaled_glyph->metrics.y_advance = fs_metrics->y_advance; |
2747 | scaled_glyph->metrics.y_advance = fs_metrics->y_advance; |
2585 | cairo_matrix_transform_distance (&scaled_font->font_matrix, |
2748 | cairo_matrix_transform_distance (&scaled_font->font_matrix, |
2586 | &scaled_glyph->metrics.x_advance, |
2749 | &scaled_glyph->metrics.x_advance, |
2587 | &scaled_glyph->metrics.y_advance); |
2750 | &scaled_glyph->metrics.y_advance); |
2588 | 2751 | ||
2589 | device_x_advance = fs_metrics->x_advance; |
2752 | device_x_advance = fs_metrics->x_advance; |
2590 | device_y_advance = fs_metrics->y_advance; |
2753 | device_y_advance = fs_metrics->y_advance; |
2591 | cairo_matrix_transform_distance (&scaled_font->scale, |
2754 | cairo_matrix_transform_distance (&scaled_font->scale, |
2592 | &device_x_advance, |
2755 | &device_x_advance, |
2593 | &device_y_advance); |
2756 | &device_y_advance); |
2594 | 2757 | ||
2595 | scaled_glyph->bbox.p1.x = _cairo_fixed_from_double (min_device_x); |
2758 | scaled_glyph->bbox.p1.x = _cairo_fixed_from_double (min_device_x); |
2596 | scaled_glyph->bbox.p1.y = _cairo_fixed_from_double (min_device_y); |
2759 | scaled_glyph->bbox.p1.y = _cairo_fixed_from_double (min_device_y); |
2597 | scaled_glyph->bbox.p2.x = _cairo_fixed_from_double (max_device_x); |
2760 | scaled_glyph->bbox.p2.x = _cairo_fixed_from_double (max_device_x); |
2598 | scaled_glyph->bbox.p2.y = _cairo_fixed_from_double (max_device_y); |
2761 | scaled_glyph->bbox.p2.y = _cairo_fixed_from_double (max_device_y); |
2599 | 2762 | ||
2600 | scaled_glyph->x_advance = _cairo_lround (device_x_advance); |
2763 | scaled_glyph->x_advance = _cairo_lround (device_x_advance); |
2601 | scaled_glyph->y_advance = _cairo_lround (device_y_advance); |
2764 | scaled_glyph->y_advance = _cairo_lround (device_y_advance); |
2602 | 2765 | ||
2603 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_METRICS; |
2766 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_METRICS; |
2604 | } |
2767 | } |
2605 | 2768 | ||
2606 | void |
2769 | void |
2607 | _cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph, |
2770 | _cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph, |
2608 | cairo_scaled_font_t *scaled_font, |
2771 | cairo_scaled_font_t *scaled_font, |
2609 | cairo_image_surface_t *surface) |
2772 | cairo_image_surface_t *surface) |
2610 | { |
2773 | { |
2611 | if (scaled_glyph->surface != NULL) |
2774 | if (scaled_glyph->surface != NULL) |
2612 | cairo_surface_destroy (&scaled_glyph->surface->base); |
2775 | cairo_surface_destroy (&scaled_glyph->surface->base); |
2613 | 2776 | ||
2614 | /* sanity check the backend glyph contents */ |
2777 | /* sanity check the backend glyph contents */ |
2615 | _cairo_debug_check_image_surface_is_defined (&surface->base); |
2778 | _cairo_debug_check_image_surface_is_defined (&surface->base); |
2616 | scaled_glyph->surface = surface; |
2779 | scaled_glyph->surface = surface; |
2617 | 2780 | ||
2618 | if (surface != NULL) |
2781 | if (surface != NULL) |
2619 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_SURFACE; |
2782 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_SURFACE; |
2620 | else |
2783 | else |
2621 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_SURFACE; |
2784 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_SURFACE; |
2622 | } |
2785 | } |
2623 | 2786 | ||
2624 | void |
2787 | void |
2625 | _cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph, |
2788 | _cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph, |
2626 | cairo_scaled_font_t *scaled_font, |
2789 | cairo_scaled_font_t *scaled_font, |
2627 | cairo_path_fixed_t *path) |
2790 | cairo_path_fixed_t *path) |
2628 | { |
2791 | { |
2629 | if (scaled_glyph->path != NULL) |
2792 | if (scaled_glyph->path != NULL) |
2630 | _cairo_path_fixed_destroy (scaled_glyph->path); |
2793 | _cairo_path_fixed_destroy (scaled_glyph->path); |
2631 | 2794 | ||
2632 | scaled_glyph->path = path; |
2795 | scaled_glyph->path = path; |
2633 | 2796 | ||
2634 | if (path != NULL) |
2797 | if (path != NULL) |
2635 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_PATH; |
2798 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_PATH; |
2636 | else |
2799 | else |
2637 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_PATH; |
2800 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_PATH; |
2638 | } |
2801 | } |
2639 | 2802 | ||
2640 | void |
2803 | void |
2641 | _cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph, |
2804 | _cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph, |
2642 | cairo_scaled_font_t *scaled_font, |
2805 | cairo_scaled_font_t *scaled_font, |
2643 | cairo_surface_t *recording_surface) |
2806 | cairo_surface_t *recording_surface) |
2644 | { |
2807 | { |
2645 | if (scaled_glyph->recording_surface != NULL) { |
2808 | if (scaled_glyph->recording_surface != NULL) { |
2646 | cairo_surface_finish (scaled_glyph->recording_surface); |
2809 | cairo_surface_finish (scaled_glyph->recording_surface); |
2647 | cairo_surface_destroy (scaled_glyph->recording_surface); |
2810 | cairo_surface_destroy (scaled_glyph->recording_surface); |
2648 | } |
2811 | } |
2649 | 2812 | ||
2650 | scaled_glyph->recording_surface = recording_surface; |
2813 | scaled_glyph->recording_surface = recording_surface; |
2651 | 2814 | ||
2652 | if (recording_surface != NULL) |
2815 | if (recording_surface != NULL) |
2653 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
2816 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
2654 | else |
2817 | else |
2655 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
2818 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
2656 | } |
2819 | } |
2657 | 2820 | ||
2658 | static cairo_bool_t |
2821 | static cairo_bool_t |
2659 | _cairo_scaled_glyph_page_can_remove (const void *closure) |
2822 | _cairo_scaled_glyph_page_can_remove (const void *closure) |
2660 | { |
2823 | { |
2661 | const cairo_scaled_glyph_page_t *page = closure; |
2824 | const cairo_scaled_glyph_page_t *page = closure; |
2662 | const cairo_scaled_font_t *scaled_font; |
2825 | const cairo_scaled_font_t *scaled_font; |
2663 | 2826 | ||
2664 | scaled_font = (cairo_scaled_font_t *) page->cache_entry.hash; |
2827 | scaled_font = (cairo_scaled_font_t *) page->cache_entry.hash; |
2665 | return scaled_font->cache_frozen == 0; |
2828 | return scaled_font->cache_frozen == 0; |
2666 | } |
2829 | } |
2667 | 2830 | ||
2668 | static cairo_status_t |
2831 | static cairo_status_t |
2669 | _cairo_scaled_font_allocate_glyph (cairo_scaled_font_t *scaled_font, |
2832 | _cairo_scaled_font_allocate_glyph (cairo_scaled_font_t *scaled_font, |
2670 | cairo_scaled_glyph_t **scaled_glyph) |
2833 | cairo_scaled_glyph_t **scaled_glyph) |
2671 | { |
2834 | { |
2672 | cairo_scaled_glyph_page_t *page; |
2835 | cairo_scaled_glyph_page_t *page; |
2673 | cairo_status_t status; |
2836 | cairo_status_t status; |
- | 2837 | ||
- | 2838 | assert (scaled_font->cache_frozen); |
|
2674 | 2839 | ||
2675 | /* only the first page in the list may contain available slots */ |
2840 | /* only the first page in the list may contain available slots */ |
2676 | if (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
2841 | if (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
2677 | page = cairo_list_last_entry (&scaled_font->glyph_pages, |
2842 | page = cairo_list_last_entry (&scaled_font->glyph_pages, |
2678 | cairo_scaled_glyph_page_t, |
2843 | cairo_scaled_glyph_page_t, |
2679 | link); |
2844 | link); |
2680 | if (page->num_glyphs < CAIRO_SCALED_GLYPH_PAGE_SIZE) { |
2845 | if (page->num_glyphs < CAIRO_SCALED_GLYPH_PAGE_SIZE) { |
2681 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
2846 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
2682 | return CAIRO_STATUS_SUCCESS; |
2847 | return CAIRO_STATUS_SUCCESS; |
2683 | } |
2848 | } |
2684 | } |
2849 | } |
2685 | 2850 | ||
2686 | page = malloc (sizeof (cairo_scaled_glyph_page_t)); |
2851 | page = malloc (sizeof (cairo_scaled_glyph_page_t)); |
2687 | if (unlikely (page == NULL)) |
2852 | if (unlikely (page == NULL)) |
2688 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2853 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2689 | 2854 | ||
2690 | page->cache_entry.hash = (unsigned long) scaled_font; |
2855 | page->cache_entry.hash = (unsigned long) scaled_font; |
2691 | page->cache_entry.size = 1; /* XXX occupancy weighting? */ |
2856 | page->cache_entry.size = 1; /* XXX occupancy weighting? */ |
2692 | page->num_glyphs = 0; |
2857 | page->num_glyphs = 0; |
2693 | 2858 | ||
2694 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
2859 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
2695 | if (scaled_font->global_cache_frozen == FALSE) { |
2860 | if (scaled_font->global_cache_frozen == FALSE) { |
2696 | if (unlikely (cairo_scaled_glyph_page_cache.hash_table == NULL)) { |
2861 | if (unlikely (cairo_scaled_glyph_page_cache.hash_table == NULL)) { |
2697 | status = _cairo_cache_init (&cairo_scaled_glyph_page_cache, |
2862 | status = _cairo_cache_init (&cairo_scaled_glyph_page_cache, |
2698 | NULL, |
2863 | NULL, |
2699 | _cairo_scaled_glyph_page_can_remove, |
2864 | _cairo_scaled_glyph_page_can_remove, |
2700 | _cairo_scaled_glyph_page_destroy, |
2865 | _cairo_scaled_glyph_page_pluck, |
2701 | MAX_GLYPH_PAGES_CACHED); |
2866 | MAX_GLYPH_PAGES_CACHED); |
2702 | if (unlikely (status)) { |
2867 | if (unlikely (status)) { |
2703 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
2868 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
2704 | free (page); |
2869 | free (page); |
2705 | return status; |
2870 | return status; |
2706 | } |
2871 | } |
2707 | } |
2872 | } |
2708 | 2873 | ||
2709 | _cairo_cache_freeze (&cairo_scaled_glyph_page_cache); |
2874 | _cairo_cache_freeze (&cairo_scaled_glyph_page_cache); |
2710 | scaled_font->global_cache_frozen = TRUE; |
2875 | scaled_font->global_cache_frozen = TRUE; |
2711 | } |
2876 | } |
2712 | 2877 | ||
2713 | status = _cairo_cache_insert (&cairo_scaled_glyph_page_cache, |
2878 | status = _cairo_cache_insert (&cairo_scaled_glyph_page_cache, |
2714 | &page->cache_entry); |
2879 | &page->cache_entry); |
2715 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
2880 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
2716 | if (unlikely (status)) { |
2881 | if (unlikely (status)) { |
2717 | free (page); |
2882 | free (page); |
2718 | return status; |
2883 | return status; |
2719 | } |
2884 | } |
2720 | 2885 | ||
2721 | cairo_list_add_tail (&page->link, &scaled_font->glyph_pages); |
2886 | cairo_list_add_tail (&page->link, &scaled_font->glyph_pages); |
2722 | 2887 | ||
2723 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
2888 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
2724 | return CAIRO_STATUS_SUCCESS; |
2889 | return CAIRO_STATUS_SUCCESS; |
2725 | } |
2890 | } |
2726 | 2891 | ||
2727 | static void |
2892 | static void |
2728 | _cairo_scaled_font_free_last_glyph (cairo_scaled_font_t *scaled_font, |
2893 | _cairo_scaled_font_free_last_glyph (cairo_scaled_font_t *scaled_font, |
2729 | cairo_scaled_glyph_t *scaled_glyph) |
2894 | cairo_scaled_glyph_t *scaled_glyph) |
2730 | { |
2895 | { |
2731 | cairo_scaled_glyph_page_t *page; |
2896 | cairo_scaled_glyph_page_t *page; |
2732 | 2897 | ||
2733 | assert (! cairo_list_is_empty (&scaled_font->glyph_pages)); |
2898 | assert (! cairo_list_is_empty (&scaled_font->glyph_pages)); |
2734 | page = cairo_list_last_entry (&scaled_font->glyph_pages, |
2899 | page = cairo_list_last_entry (&scaled_font->glyph_pages, |
2735 | cairo_scaled_glyph_page_t, |
2900 | cairo_scaled_glyph_page_t, |
2736 | link); |
2901 | link); |
2737 | assert (scaled_glyph == &page->glyphs[page->num_glyphs-1]); |
2902 | assert (scaled_glyph == &page->glyphs[page->num_glyphs-1]); |
2738 | 2903 | ||
2739 | _cairo_scaled_glyph_fini (scaled_font, scaled_glyph); |
2904 | _cairo_scaled_glyph_fini (scaled_font, scaled_glyph); |
2740 | 2905 | ||
2741 | if (--page->num_glyphs == 0) { |
2906 | if (--page->num_glyphs == 0) { |
- | 2907 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex); |
|
- | 2908 | /* Temporarily disconnect callback to avoid recursive locking */ |
|
- | 2909 | cairo_scaled_glyph_page_cache.entry_destroy = NULL; |
|
2742 | _cairo_cache_remove (&cairo_scaled_glyph_page_cache, |
2910 | _cairo_cache_remove (&cairo_scaled_glyph_page_cache, |
2743 | &page->cache_entry); |
2911 | &page->cache_entry); |
- | 2912 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
|
- | 2913 | cairo_scaled_glyph_page_cache.entry_destroy = _cairo_scaled_glyph_page_pluck; |
|
- | 2914 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex); |
|
2744 | } |
2915 | } |
2745 | } |
2916 | } |
2746 | 2917 | ||
2747 | /** |
2918 | /** |
2748 | * _cairo_scaled_glyph_lookup: |
2919 | * _cairo_scaled_glyph_lookup: |
2749 | * @scaled_font: a #cairo_scaled_font_t |
2920 | * @scaled_font: a #cairo_scaled_font_t |
2750 | * @index: the glyph to create |
2921 | * @index: the glyph to create |
2751 | * @info: a #cairo_scaled_glyph_info_t marking which portions of |
2922 | * @info: a #cairo_scaled_glyph_info_t marking which portions of |
2752 | * the glyph should be filled in. |
2923 | * the glyph should be filled in. |
2753 | * @scaled_glyph_ret: a #cairo_scaled_glyph_t where the glyph |
2924 | * @scaled_glyph_ret: a #cairo_scaled_glyph_t where the glyph |
2754 | * is returned. |
2925 | * is returned. |
2755 | * |
2926 | * |
2756 | * If the desired info is not available, (for example, when trying to |
2927 | * If the desired info is not available, (for example, when trying to |
2757 | * get INFO_PATH with a bitmapped font), this function will return |
2928 | * get INFO_PATH with a bitmapped font), this function will return |
2758 | * %CAIRO_INT_STATUS_UNSUPPORTED. |
2929 | * %CAIRO_INT_STATUS_UNSUPPORTED. |
2759 | * |
2930 | * |
2760 | * Note: This function must be called with the scaled font frozen, and it must |
2931 | * Note: This function must be called with the scaled font frozen, and it must |
2761 | * remain frozen for as long as the @scaled_glyph_ret is alive. (If the scaled |
2932 | * remain frozen for as long as the @scaled_glyph_ret is alive. (If the scaled |
2762 | * font was not frozen, then there is no guarantee that the glyph would not be |
2933 | * font was not frozen, then there is no guarantee that the glyph would not be |
2763 | * evicted before you tried to access it.) See |
2934 | * evicted before you tried to access it.) See |
2764 | * _cairo_scaled_font_freeze_cache() and _cairo_scaled_font_thaw_cache(). |
2935 | * _cairo_scaled_font_freeze_cache() and _cairo_scaled_font_thaw_cache(). |
2765 | * |
2936 | * |
2766 | * Returns: a glyph with the requested portions filled in. Glyph |
2937 | * Returns: a glyph with the requested portions filled in. Glyph |
2767 | * lookup is cached and glyph will be automatically freed along |
2938 | * lookup is cached and glyph will be automatically freed along |
2768 | * with the scaled_font so no explicit free is required. |
2939 | * with the scaled_font so no explicit free is required. |
2769 | * @info can be one or more of: |
2940 | * @info can be one or more of: |
2770 | * %CAIRO_SCALED_GLYPH_INFO_METRICS - glyph metrics and bounding box |
2941 | * %CAIRO_SCALED_GLYPH_INFO_METRICS - glyph metrics and bounding box |
2771 | * %CAIRO_SCALED_GLYPH_INFO_SURFACE - surface holding glyph image |
2942 | * %CAIRO_SCALED_GLYPH_INFO_SURFACE - surface holding glyph image |
2772 | * %CAIRO_SCALED_GLYPH_INFO_PATH - path holding glyph outline in device space |
2943 | * %CAIRO_SCALED_GLYPH_INFO_PATH - path holding glyph outline in device space |
2773 | **/ |
2944 | **/ |
2774 | cairo_int_status_t |
2945 | cairo_int_status_t |
2775 | _cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font, |
2946 | _cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font, |
2776 | unsigned long index, |
2947 | unsigned long index, |
2777 | cairo_scaled_glyph_info_t info, |
2948 | cairo_scaled_glyph_info_t info, |
2778 | cairo_scaled_glyph_t **scaled_glyph_ret) |
2949 | cairo_scaled_glyph_t **scaled_glyph_ret) |
2779 | { |
2950 | { |
2780 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
2951 | cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS; |
2781 | cairo_scaled_glyph_t *scaled_glyph; |
2952 | cairo_scaled_glyph_t *scaled_glyph; |
2782 | cairo_scaled_glyph_info_t need_info; |
2953 | cairo_scaled_glyph_info_t need_info; |
2783 | 2954 | ||
2784 | *scaled_glyph_ret = NULL; |
2955 | *scaled_glyph_ret = NULL; |
2785 | 2956 | ||
2786 | if (unlikely (scaled_font->status)) |
2957 | if (unlikely (scaled_font->status)) |
2787 | return scaled_font->status; |
2958 | return scaled_font->status; |
- | 2959 | ||
- | 2960 | assert (CAIRO_MUTEX_IS_LOCKED(scaled_font->mutex)); |
|
- | 2961 | assert (scaled_font->cache_frozen); |
|
2788 | 2962 | ||
2789 | if (CAIRO_INJECT_FAULT ()) |
2963 | if (CAIRO_INJECT_FAULT ()) |
2790 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2964 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
2791 | 2965 | ||
2792 | /* |
2966 | /* |
2793 | * Check cache for glyph |
2967 | * Check cache for glyph |
2794 | */ |
2968 | */ |
2795 | scaled_glyph = _cairo_hash_table_lookup (scaled_font->glyphs, |
2969 | scaled_glyph = _cairo_hash_table_lookup (scaled_font->glyphs, |
2796 | (cairo_hash_entry_t *) &index); |
2970 | (cairo_hash_entry_t *) &index); |
2797 | if (scaled_glyph == NULL) { |
2971 | if (scaled_glyph == NULL) { |
2798 | status = _cairo_scaled_font_allocate_glyph (scaled_font, &scaled_glyph); |
2972 | status = _cairo_scaled_font_allocate_glyph (scaled_font, &scaled_glyph); |
2799 | if (unlikely (status)) |
2973 | if (unlikely (status)) |
2800 | goto err; |
2974 | goto err; |
2801 | 2975 | ||
2802 | memset (scaled_glyph, 0, sizeof (cairo_scaled_glyph_t)); |
2976 | memset (scaled_glyph, 0, sizeof (cairo_scaled_glyph_t)); |
2803 | _cairo_scaled_glyph_set_index (scaled_glyph, index); |
2977 | _cairo_scaled_glyph_set_index (scaled_glyph, index); |
- | 2978 | cairo_list_init (&scaled_glyph->dev_privates); |
|
2804 | 2979 | ||
2805 | /* ask backend to initialize metrics and shape fields */ |
2980 | /* ask backend to initialize metrics and shape fields */ |
2806 | status = |
2981 | status = |
2807 | scaled_font->backend->scaled_glyph_init (scaled_font, |
2982 | scaled_font->backend->scaled_glyph_init (scaled_font, |
2808 | scaled_glyph, |
2983 | scaled_glyph, |
2809 | info | CAIRO_SCALED_GLYPH_INFO_METRICS); |
2984 | info | CAIRO_SCALED_GLYPH_INFO_METRICS); |
2810 | if (unlikely (status)) { |
2985 | if (unlikely (status)) { |
2811 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
2986 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
2812 | goto err; |
2987 | goto err; |
2813 | } |
2988 | } |
2814 | 2989 | ||
2815 | status = _cairo_hash_table_insert (scaled_font->glyphs, |
2990 | status = _cairo_hash_table_insert (scaled_font->glyphs, |
2816 | &scaled_glyph->hash_entry); |
2991 | &scaled_glyph->hash_entry); |
2817 | if (unlikely (status)) { |
2992 | if (unlikely (status)) { |
2818 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
2993 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
2819 | goto err; |
2994 | goto err; |
2820 | } |
2995 | } |
2821 | } |
2996 | } |
2822 | 2997 | ||
2823 | /* |
2998 | /* |
2824 | * Check and see if the glyph, as provided, |
2999 | * Check and see if the glyph, as provided, |
2825 | * already has the requested data and amend it if not |
3000 | * already has the requested data and amend it if not |
2826 | */ |
3001 | */ |
2827 | need_info = info & ~scaled_glyph->has_info; |
3002 | need_info = info & ~scaled_glyph->has_info; |
2828 | if (need_info) { |
3003 | if (need_info) { |
2829 | status = scaled_font->backend->scaled_glyph_init (scaled_font, |
3004 | status = scaled_font->backend->scaled_glyph_init (scaled_font, |
2830 | scaled_glyph, |
3005 | scaled_glyph, |
2831 | need_info); |
3006 | need_info); |
2832 | if (unlikely (status)) |
3007 | if (unlikely (status)) |
2833 | goto err; |
3008 | goto err; |
2834 | 3009 | ||
2835 | /* Don't trust the scaled_glyph_init() return value, the font |
3010 | /* Don't trust the scaled_glyph_init() return value, the font |
2836 | * backend may not even know about some of the info. For example, |
3011 | * backend may not even know about some of the info. For example, |
2837 | * no backend other than the user-fonts knows about recording-surface |
3012 | * no backend other than the user-fonts knows about recording-surface |
2838 | * glyph info. */ |
3013 | * glyph info. */ |
2839 | if (info & ~scaled_glyph->has_info) |
3014 | if (info & ~scaled_glyph->has_info) |
2840 | return CAIRO_INT_STATUS_UNSUPPORTED; |
3015 | return CAIRO_INT_STATUS_UNSUPPORTED; |
2841 | } |
3016 | } |
2842 | 3017 | ||
2843 | *scaled_glyph_ret = scaled_glyph; |
3018 | *scaled_glyph_ret = scaled_glyph; |
2844 | return CAIRO_STATUS_SUCCESS; |
3019 | return CAIRO_STATUS_SUCCESS; |
2845 | 3020 | ||
2846 | err: |
3021 | err: |
2847 | /* It's not an error for the backend to not support the info we want. */ |
3022 | /* It's not an error for the backend to not support the info we want. */ |
2848 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
3023 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
2849 | status = _cairo_scaled_font_set_error (scaled_font, status); |
3024 | status = _cairo_scaled_font_set_error (scaled_font, status); |
2850 | return status; |
3025 | return status; |
2851 | } |
3026 | } |
2852 | 3027 | ||
2853 | double |
3028 | double |
2854 | _cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font) |
3029 | _cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font) |
2855 | { |
3030 | { |
2856 | return scaled_font->max_scale; |
3031 | return scaled_font->max_scale; |
2857 | } |
3032 | } |
2858 | 3033 | ||
2859 | 3034 | ||
2860 | /** |
3035 | /** |
2861 | * cairo_scaled_font_get_font_face: |
3036 | * cairo_scaled_font_get_font_face: |
2862 | * @scaled_font: a #cairo_scaled_font_t |
3037 | * @scaled_font: a #cairo_scaled_font_t |
2863 | * |
3038 | * |
2864 | * Gets the font face that this scaled font uses. This is the |
3039 | * Gets the font face that this scaled font uses. This might be the |
2865 | * font face passed to cairo_scaled_font_create(). |
3040 | * font face passed to cairo_scaled_font_create(), but this does not |
- | 3041 | * hold true for all possible cases. |
|
2866 | * |
3042 | * |
2867 | * Return value: The #cairo_font_face_t with which @scaled_font was |
3043 | * Return value: The #cairo_font_face_t with which @scaled_font was |
- | 3044 | * created. This object is owned by cairo. To keep a reference to it, |
|
2868 | * created. |
3045 | * you must call cairo_scaled_font_reference(). |
2869 | * |
3046 | * |
2870 | * Since: 1.2 |
3047 | * Since: 1.2 |
2871 | **/ |
3048 | **/ |
2872 | cairo_font_face_t * |
3049 | cairo_font_face_t * |
2873 | cairo_scaled_font_get_font_face (cairo_scaled_font_t *scaled_font) |
3050 | cairo_scaled_font_get_font_face (cairo_scaled_font_t *scaled_font) |
2874 | { |
3051 | { |
2875 | if (scaled_font->status) |
3052 | if (scaled_font->status) |
2876 | return (cairo_font_face_t*) &_cairo_font_face_nil; |
3053 | return (cairo_font_face_t*) &_cairo_font_face_nil; |
2877 | 3054 | ||
2878 | if (scaled_font->original_font_face != NULL) |
3055 | if (scaled_font->original_font_face != NULL) |
2879 | return scaled_font->original_font_face; |
3056 | return scaled_font->original_font_face; |
2880 | 3057 | ||
2881 | return scaled_font->font_face; |
3058 | return scaled_font->font_face; |
2882 | } |
3059 | } |
2883 | slim_hidden_def (cairo_scaled_font_get_font_face); |
3060 | slim_hidden_def (cairo_scaled_font_get_font_face); |
2884 | 3061 | ||
2885 | /** |
3062 | /** |
2886 | * cairo_scaled_font_get_font_matrix: |
3063 | * cairo_scaled_font_get_font_matrix: |
2887 | * @scaled_font: a #cairo_scaled_font_t |
3064 | * @scaled_font: a #cairo_scaled_font_t |
2888 | * @font_matrix: return value for the matrix |
3065 | * @font_matrix: return value for the matrix |
2889 | * |
3066 | * |
2890 | * Stores the font matrix with which @scaled_font was created into |
3067 | * Stores the font matrix with which @scaled_font was created into |
2891 | * @matrix. |
3068 | * @matrix. |
2892 | * |
3069 | * |
2893 | * Since: 1.2 |
3070 | * Since: 1.2 |
2894 | **/ |
3071 | **/ |
2895 | void |
3072 | void |
2896 | cairo_scaled_font_get_font_matrix (cairo_scaled_font_t *scaled_font, |
3073 | cairo_scaled_font_get_font_matrix (cairo_scaled_font_t *scaled_font, |
2897 | cairo_matrix_t *font_matrix) |
3074 | cairo_matrix_t *font_matrix) |
2898 | { |
3075 | { |
2899 | if (scaled_font->status) { |
3076 | if (scaled_font->status) { |
2900 | cairo_matrix_init_identity (font_matrix); |
3077 | cairo_matrix_init_identity (font_matrix); |
2901 | return; |
3078 | return; |
2902 | } |
3079 | } |
2903 | 3080 | ||
2904 | *font_matrix = scaled_font->font_matrix; |
3081 | *font_matrix = scaled_font->font_matrix; |
2905 | } |
3082 | } |
2906 | slim_hidden_def (cairo_scaled_font_get_font_matrix); |
3083 | slim_hidden_def (cairo_scaled_font_get_font_matrix); |
2907 | 3084 | ||
2908 | /** |
3085 | /** |
2909 | * cairo_scaled_font_get_ctm: |
3086 | * cairo_scaled_font_get_ctm: |
2910 | * @scaled_font: a #cairo_scaled_font_t |
3087 | * @scaled_font: a #cairo_scaled_font_t |
2911 | * @ctm: return value for the CTM |
3088 | * @ctm: return value for the CTM |
2912 | * |
3089 | * |
2913 | * Stores the CTM with which @scaled_font was created into @ctm. |
3090 | * Stores the CTM with which @scaled_font was created into @ctm. |
2914 | * Note that the translation offsets (x0, y0) of the CTM are ignored |
3091 | * Note that the translation offsets (x0, y0) of the CTM are ignored |
2915 | * by cairo_scaled_font_create(). So, the matrix this |
3092 | * by cairo_scaled_font_create(). So, the matrix this |
2916 | * function returns always has 0,0 as x0,y0. |
3093 | * function returns always has 0,0 as x0,y0. |
2917 | * |
3094 | * |
2918 | * Since: 1.2 |
3095 | * Since: 1.2 |
2919 | **/ |
3096 | **/ |
2920 | void |
3097 | void |
2921 | cairo_scaled_font_get_ctm (cairo_scaled_font_t *scaled_font, |
3098 | cairo_scaled_font_get_ctm (cairo_scaled_font_t *scaled_font, |
2922 | cairo_matrix_t *ctm) |
3099 | cairo_matrix_t *ctm) |
2923 | { |
3100 | { |
2924 | if (scaled_font->status) { |
3101 | if (scaled_font->status) { |
2925 | cairo_matrix_init_identity (ctm); |
3102 | cairo_matrix_init_identity (ctm); |
2926 | return; |
3103 | return; |
2927 | } |
3104 | } |
2928 | 3105 | ||
2929 | *ctm = scaled_font->ctm; |
3106 | *ctm = scaled_font->ctm; |
2930 | } |
3107 | } |
2931 | slim_hidden_def (cairo_scaled_font_get_ctm); |
3108 | slim_hidden_def (cairo_scaled_font_get_ctm); |
2932 | 3109 | ||
2933 | /** |
3110 | /** |
2934 | * cairo_scaled_font_get_scale_matrix: |
3111 | * cairo_scaled_font_get_scale_matrix: |
2935 | * @scaled_font: a #cairo_scaled_font_t |
3112 | * @scaled_font: a #cairo_scaled_font_t |
2936 | * @scale_matrix: return value for the matrix |
3113 | * @scale_matrix: return value for the matrix |
2937 | * |
3114 | * |
2938 | * Stores the scale matrix of @scaled_font into @matrix. |
3115 | * Stores the scale matrix of @scaled_font into @matrix. |
2939 | * The scale matrix is product of the font matrix and the ctm |
3116 | * The scale matrix is product of the font matrix and the ctm |
2940 | * associated with the scaled font, and hence is the matrix mapping from |
3117 | * associated with the scaled font, and hence is the matrix mapping from |
2941 | * font space to device space. |
3118 | * font space to device space. |
2942 | * |
3119 | * |
2943 | * Since: 1.8 |
3120 | * Since: 1.8 |
2944 | **/ |
3121 | **/ |
2945 | void |
3122 | void |
2946 | cairo_scaled_font_get_scale_matrix (cairo_scaled_font_t *scaled_font, |
3123 | cairo_scaled_font_get_scale_matrix (cairo_scaled_font_t *scaled_font, |
2947 | cairo_matrix_t *scale_matrix) |
3124 | cairo_matrix_t *scale_matrix) |
2948 | { |
3125 | { |
2949 | if (scaled_font->status) { |
3126 | if (scaled_font->status) { |
2950 | cairo_matrix_init_identity (scale_matrix); |
3127 | cairo_matrix_init_identity (scale_matrix); |
2951 | return; |
3128 | return; |
2952 | } |
3129 | } |
2953 | 3130 | ||
2954 | *scale_matrix = scaled_font->scale; |
3131 | *scale_matrix = scaled_font->scale; |
2955 | } |
3132 | } |
2956 | 3133 | ||
2957 | /** |
3134 | /** |
2958 | * cairo_scaled_font_get_font_options: |
3135 | * cairo_scaled_font_get_font_options: |
2959 | * @scaled_font: a #cairo_scaled_font_t |
3136 | * @scaled_font: a #cairo_scaled_font_t |
2960 | * @options: return value for the font options |
3137 | * @options: return value for the font options |
2961 | * |
3138 | * |
2962 | * Stores the font options with which @scaled_font was created into |
3139 | * Stores the font options with which @scaled_font was created into |
2963 | * @options. |
3140 | * @options. |
2964 | * |
3141 | * |
2965 | * Since: 1.2 |
3142 | * Since: 1.2 |
2966 | **/ |
3143 | **/ |
2967 | void |
3144 | void |
2968 | cairo_scaled_font_get_font_options (cairo_scaled_font_t *scaled_font, |
3145 | cairo_scaled_font_get_font_options (cairo_scaled_font_t *scaled_font, |
2969 | cairo_font_options_t *options) |
3146 | cairo_font_options_t *options) |
2970 | { |
3147 | { |
2971 | if (cairo_font_options_status (options)) |
3148 | if (cairo_font_options_status (options)) |
2972 | return; |
3149 | return; |
2973 | 3150 | ||
2974 | if (scaled_font->status) { |
3151 | if (scaled_font->status) { |
2975 | _cairo_font_options_init_default (options); |
3152 | _cairo_font_options_init_default (options); |
2976 | return; |
3153 | return; |
2977 | } |
3154 | } |
2978 | 3155 | ||
2979 | _cairo_font_options_init_copy (options, &scaled_font->options); |
3156 | _cairo_font_options_init_copy (options, &scaled_font->options); |
2980 | } |
3157 | } |
2981 | slim_hidden_def (cairo_scaled_font_get_font_options);>>>>>=>=>>>><> |
3158 | slim_hidden_def (cairo_scaled_font_get_font_options);>>>>>=>=>>>><> |
2982 | >>=>=>>>>>>>>>>>>>>>>>>>>>>>>=>>><>><>><>>---|-->-->--|-->--|-->-->---|-->--> |
3159 | >>>>>>>>>>>>>>>>>>>>>>>>>=>>><>><>><>>---|-->-->--|-->--|-->-->---|-->--> |