0,0 → 1,308 |
/* cairo - a vector graphics library with display and print output |
* |
* Copyright © 2005 Red Hat, Inc |
* Copyright © 2007 Adrian Johnson |
* Copyright © 2009 Chris Wilson |
* |
* This library is free software; you can redistribute it and/or |
* modify it either under the terms of the GNU Lesser General Public |
* License version 2.1 as published by the Free Software Foundation |
* (the "LGPL") or, at your option, under the terms of the Mozilla |
* Public License Version 1.1 (the "MPL"). If you do not alter this |
* notice, a recipient may use your version of this file under either |
* the MPL or the LGPL. |
* |
* You should have received a copy of the LGPL along with this library |
* in the file COPYING-LGPL-2.1; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
* You should have received a copy of the MPL along with this library |
* in the file COPYING-MPL-1.1 |
* |
* The contents of this file are subject to the Mozilla Public License |
* Version 1.1 (the "License"); you may not use this file except in |
* compliance with the License. You may obtain a copy of the License at |
* http://www.mozilla.org/MPL/ |
* |
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
* OF ANY KIND, either express or implied. See the LGPL or the MPL for |
* the specific language governing rights and limitations. |
* |
* The Original Code is the cairo graphics library. |
* |
* The Initial Developer of the Original Code is Red Hat, Inc. |
* |
* Contributor(s): |
* Chris Wilson <chris@chris-wilson.co.uk> |
*/ |
|
#include "cairoint.h" |
|
#include "cairo-clip-inline.h" |
#include "cairo-error-private.h" |
#include "cairo-pattern-private.h" |
#include "cairo-surface-offset-private.h" |
|
/* A collection of routines to facilitate drawing to an alternate surface. */ |
|
static void |
_copy_transformed_pattern (cairo_pattern_t *pattern, |
const cairo_pattern_t *original, |
const cairo_matrix_t *ctm_inverse) |
{ |
_cairo_pattern_init_static_copy (pattern, original); |
|
if (! _cairo_matrix_is_identity (ctm_inverse)) |
_cairo_pattern_transform (pattern, ctm_inverse); |
} |
|
cairo_status_t |
_cairo_surface_offset_paint (cairo_surface_t *target, |
int x, int y, |
cairo_operator_t op, |
const cairo_pattern_t *source, |
const cairo_clip_t *clip) |
{ |
cairo_status_t status; |
cairo_clip_t *dev_clip = (cairo_clip_t *) clip; |
cairo_pattern_union_t source_copy; |
|
if (unlikely (target->status)) |
return target->status; |
|
if (_cairo_clip_is_all_clipped (clip)) |
return CAIRO_STATUS_SUCCESS; |
|
if (x | y) { |
cairo_matrix_t m; |
|
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y); |
|
cairo_matrix_init_translate (&m, x, y); |
_copy_transformed_pattern (&source_copy.base, source, &m); |
source = &source_copy.base; |
} |
|
status = _cairo_surface_paint (target, op, source, dev_clip); |
|
if (dev_clip != clip) |
_cairo_clip_destroy (dev_clip); |
|
return status; |
} |
|
cairo_status_t |
_cairo_surface_offset_mask (cairo_surface_t *target, |
int x, int y, |
cairo_operator_t op, |
const cairo_pattern_t *source, |
const cairo_pattern_t *mask, |
const cairo_clip_t *clip) |
{ |
cairo_status_t status; |
cairo_clip_t *dev_clip = (cairo_clip_t *) clip; |
cairo_pattern_union_t source_copy; |
cairo_pattern_union_t mask_copy; |
|
if (unlikely (target->status)) |
return target->status; |
|
if (_cairo_clip_is_all_clipped (clip)) |
return CAIRO_STATUS_SUCCESS; |
|
if (x | y) { |
cairo_matrix_t m; |
|
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y); |
|
cairo_matrix_init_translate (&m, x, y); |
_copy_transformed_pattern (&source_copy.base, source, &m); |
_copy_transformed_pattern (&mask_copy.base, mask, &m); |
source = &source_copy.base; |
mask = &mask_copy.base; |
} |
|
status = _cairo_surface_mask (target, op, |
source, mask, |
dev_clip); |
|
if (dev_clip != clip) |
_cairo_clip_destroy (dev_clip); |
|
return status; |
} |
|
cairo_status_t |
_cairo_surface_offset_stroke (cairo_surface_t *surface, |
int x, int y, |
cairo_operator_t op, |
const cairo_pattern_t *source, |
const cairo_path_fixed_t *path, |
const cairo_stroke_style_t*stroke_style, |
const cairo_matrix_t *ctm, |
const cairo_matrix_t *ctm_inverse, |
double tolerance, |
cairo_antialias_t antialias, |
const cairo_clip_t *clip) |
{ |
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path; |
cairo_clip_t *dev_clip = (cairo_clip_t *) clip; |
cairo_matrix_t dev_ctm = *ctm; |
cairo_matrix_t dev_ctm_inverse = *ctm_inverse; |
cairo_pattern_union_t source_copy; |
cairo_status_t status; |
|
if (unlikely (surface->status)) |
return surface->status; |
|
if (_cairo_clip_is_all_clipped (clip)) |
return CAIRO_STATUS_SUCCESS; |
|
if (x | y) { |
cairo_matrix_t m; |
|
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y); |
|
status = _cairo_path_fixed_init_copy (&path_copy, dev_path); |
if (unlikely (status)) |
goto FINISH; |
|
_cairo_path_fixed_translate (&path_copy, |
_cairo_fixed_from_int (-x), |
_cairo_fixed_from_int (-y)); |
dev_path = &path_copy; |
|
cairo_matrix_init_translate (&m, -x, -y); |
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m); |
|
cairo_matrix_init_translate (&m, x, y); |
_copy_transformed_pattern (&source_copy.base, source, &m); |
source = &source_copy.base; |
cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse); |
} |
|
status = _cairo_surface_stroke (surface, op, source, |
dev_path, stroke_style, |
&dev_ctm, &dev_ctm_inverse, |
tolerance, antialias, |
dev_clip); |
|
FINISH: |
if (dev_path != path) |
_cairo_path_fixed_fini (dev_path); |
if (dev_clip != clip) |
_cairo_clip_destroy (dev_clip); |
|
return status; |
} |
|
cairo_status_t |
_cairo_surface_offset_fill (cairo_surface_t *surface, |
int x, int y, |
cairo_operator_t op, |
const cairo_pattern_t*source, |
const cairo_path_fixed_t *path, |
cairo_fill_rule_t fill_rule, |
double tolerance, |
cairo_antialias_t antialias, |
const cairo_clip_t *clip) |
{ |
cairo_status_t status; |
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path; |
cairo_clip_t *dev_clip = (cairo_clip_t *) clip; |
cairo_pattern_union_t source_copy; |
|
if (unlikely (surface->status)) |
return surface->status; |
|
if (_cairo_clip_is_all_clipped (clip)) |
return CAIRO_STATUS_SUCCESS; |
|
if (x | y) { |
cairo_matrix_t m; |
|
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y); |
|
status = _cairo_path_fixed_init_copy (&path_copy, dev_path); |
if (unlikely (status)) |
goto FINISH; |
|
_cairo_path_fixed_translate (&path_copy, |
_cairo_fixed_from_int (-x), |
_cairo_fixed_from_int (-y)); |
dev_path = &path_copy; |
|
cairo_matrix_init_translate (&m, x, y); |
_copy_transformed_pattern (&source_copy.base, source, &m); |
source = &source_copy.base; |
} |
|
status = _cairo_surface_fill (surface, op, source, |
dev_path, fill_rule, |
tolerance, antialias, |
dev_clip); |
|
FINISH: |
if (dev_path != path) |
_cairo_path_fixed_fini (dev_path); |
if (dev_clip != clip) |
_cairo_clip_destroy (dev_clip); |
|
return status; |
} |
|
cairo_status_t |
_cairo_surface_offset_glyphs (cairo_surface_t *surface, |
int x, int y, |
cairo_operator_t op, |
const cairo_pattern_t *source, |
cairo_scaled_font_t *scaled_font, |
cairo_glyph_t *glyphs, |
int num_glyphs, |
const cairo_clip_t *clip) |
{ |
cairo_status_t status; |
cairo_clip_t *dev_clip = (cairo_clip_t *) clip; |
cairo_pattern_union_t source_copy; |
cairo_glyph_t *dev_glyphs; |
int i; |
|
if (unlikely (surface->status)) |
return surface->status; |
|
if (_cairo_clip_is_all_clipped (clip)) |
return CAIRO_STATUS_SUCCESS; |
|
dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t)); |
if (dev_glyphs == NULL) |
return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
|
memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs); |
|
if (x | y) { |
cairo_matrix_t m; |
|
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y); |
|
cairo_matrix_init_translate (&m, x, y); |
_copy_transformed_pattern (&source_copy.base, source, &m); |
source = &source_copy.base; |
|
for (i = 0; i < num_glyphs; i++) { |
dev_glyphs[i].x -= x; |
dev_glyphs[i].y -= y; |
} |
} |
|
status = _cairo_surface_show_text_glyphs (surface, op, source, |
NULL, 0, |
dev_glyphs, num_glyphs, |
NULL, 0, 0, |
scaled_font, |
dev_clip); |
|
if (dev_clip != clip) |
_cairo_clip_destroy (dev_clip); |
free (dev_glyphs); |
|
return status; |
} |