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  1. /* Cairo - a vector graphics library with display and print output
  2.  *
  3.  * Copyright © 2005 Red Hat, Inc.
  4.  *
  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
  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
  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
  11.  * the MPL or the LGPL.
  12.  *
  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
  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
  17.  * in the file COPYING-MPL-1.1
  18.  *
  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
  21.  * compliance with the License. You may obtain a copy of the License at
  22.  * http://www.mozilla.org/MPL/
  23.  *
  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
  26.  * the specific language governing rights and limitations.
  27.  *
  28.  * The Original Code is the cairo graphics library.
  29.  *
  30.  * The Initial Developer of the Original Code is Red Hat, Inc.
  31.  *
  32.  * Contributors(s):
  33.  *      Chris Wilson <chris@chris-wilson.co.uk>
  34.  *      Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
  35.  */
  36.  
  37. #ifndef CAIRO_XLIB_PRIVATE_H
  38. #define CAIRO_XLIB_PRIVATE_H
  39.  
  40. #include "cairo-xlib.h"
  41. #include "cairo-xlib-xrender-private.h"
  42.  
  43. #include "cairo-compiler-private.h"
  44. #include "cairo-device-private.h"
  45. #include "cairo-freelist-type-private.h"
  46. #include "cairo-list-private.h"
  47. #include "cairo-reference-count-private.h"
  48. #include "cairo-types-private.h"
  49. #include "cairo-scaled-font-private.h"
  50. #include "cairo-surface-private.h"
  51.  
  52. #include <pixman.h>
  53. #include <string.h>
  54.  
  55. typedef struct _cairo_xlib_display cairo_xlib_display_t;
  56. typedef struct _cairo_xlib_shm_display cairo_xlib_shm_display_t;
  57. typedef struct _cairo_xlib_screen cairo_xlib_screen_t;
  58. typedef struct _cairo_xlib_source cairo_xlib_source_t;
  59. typedef struct _cairo_xlib_proxy cairo_xlib_proxy_t;
  60. typedef struct _cairo_xlib_surface cairo_xlib_surface_t;
  61.  
  62. /* size of color cube */
  63. #define CUBE_SIZE 6
  64. /* size of gray ramp */
  65. #define RAMP_SIZE 16
  66. /* maximum number of cached GC's */
  67. #define GC_CACHE_SIZE 4
  68.  
  69. struct _cairo_xlib_display {
  70.     cairo_device_t base;
  71.  
  72.     cairo_xlib_display_t *next;
  73.  
  74.     Display *display;
  75.     cairo_list_t screens;
  76.     cairo_list_t fonts;
  77.  
  78.     cairo_xlib_shm_display_t *shm;
  79.  
  80.     const cairo_compositor_t *compositor;
  81.  
  82.     int render_major;
  83.     int render_minor;
  84.     XRenderPictFormat *cached_xrender_formats[CAIRO_FORMAT_RGB16_565 + 1];
  85.  
  86.     int force_precision;
  87.  
  88.     cairo_surface_t *white;
  89.     cairo_surface_t *alpha[256];
  90.     cairo_surface_t *solid[32];
  91.     uint32_t solid_cache[32]; /* low 16 are opaque, high 16 transparent */
  92.     struct {
  93.         uint32_t color;
  94.         int index;
  95.     } last_solid_cache[2];
  96.  
  97.     /* TRUE if the server has a bug with repeating pictures
  98.      *
  99.      *  https://bugs.freedesktop.org/show_bug.cgi?id=3566
  100.      *
  101.      * We can't test for this because it depends on whether the
  102.      * picture is in video memory or not.
  103.      *
  104.      * We also use this variable as a guard against a second
  105.      * independent bug with transformed repeating pictures:
  106.      *
  107.      * http://lists.freedesktop.org/archives/cairo/2004-September/001839.html
  108.      *
  109.      * Both are fixed in xorg >= 6.9 and hopefully in > 6.8.2, so
  110.      * we can reuse the test for now.
  111.      */
  112.     unsigned int buggy_gradients : 1;
  113.     unsigned int buggy_pad_reflect : 1;
  114.     unsigned int buggy_repeat : 1;
  115.     unsigned int closed :1;
  116. };
  117.  
  118. typedef struct _cairo_xlib_visual_info {
  119.     cairo_list_t link;
  120.     VisualID visualid;
  121.     struct { uint8_t a, r, g, b; } colors[256];
  122.     uint8_t cube_to_pseudocolor[CUBE_SIZE][CUBE_SIZE][CUBE_SIZE];
  123.     uint8_t field8_to_cube[256];
  124.     int8_t  dither8_to_cube[256];
  125.     uint8_t gray8_to_pseudocolor[256];
  126. } cairo_xlib_visual_info_t;
  127.  
  128. struct _cairo_xlib_screen {
  129.     cairo_list_t link;
  130.  
  131.     cairo_device_t *device;
  132.     Screen *screen;
  133.  
  134.     cairo_list_t surfaces;
  135.  
  136.     cairo_bool_t has_font_options;
  137.     cairo_font_options_t font_options;
  138.  
  139.     GC gc[GC_CACHE_SIZE];
  140.     uint8_t gc_depths[GC_CACHE_SIZE];
  141.  
  142.     cairo_list_t visuals;
  143. };
  144.  
  145. enum {
  146.     GLYPHSET_INDEX_ARGB32,
  147.     GLYPHSET_INDEX_A8,
  148.     GLYPHSET_INDEX_A1,
  149.     NUM_GLYPHSETS
  150. };
  151.  
  152. typedef struct _cairo_xlib_font_glyphset {
  153.     GlyphSet            glyphset;
  154.     cairo_format_t      format;
  155.     XRenderPictFormat   *xrender_format;
  156.     struct _cairo_xlib_font_glyphset_free_glyphs {
  157.         int             count;
  158.         unsigned long   indices[128];
  159.     } to_free;
  160. } cairo_xlib_font_glyphset_t;
  161.  
  162. typedef struct _cairo_xlib_font {
  163.     cairo_scaled_font_private_t         base;
  164.     cairo_scaled_font_t                 *font;
  165.     cairo_device_t                      *device;
  166.     cairo_list_t                        link;
  167.     cairo_xlib_font_glyphset_t          glyphset[NUM_GLYPHSETS];
  168. } cairo_xlib_font_t;
  169.  
  170. struct _cairo_xlib_surface {
  171.     cairo_surface_t base;
  172.  
  173.     Picture picture;
  174.     Drawable drawable;
  175.  
  176.     const cairo_compositor_t *compositor;
  177.     cairo_surface_t *shm;
  178.     int fallback;
  179.  
  180.     cairo_xlib_display_t *display;
  181.     cairo_xlib_screen_t *screen;
  182.     cairo_list_t link;
  183.  
  184.     Display *dpy; /* only valid between acquire/release */
  185.     cairo_bool_t owns_pixmap;
  186.     Visual *visual;
  187.  
  188.     int use_pixmap;
  189.  
  190.     int width;
  191.     int height;
  192.     int depth;
  193.  
  194.     int precision;
  195.     XRenderPictFormat *xrender_format;
  196.     /* XXX pixman_format instead of masks? */
  197.     uint32_t a_mask;
  198.     uint32_t r_mask;
  199.     uint32_t g_mask;
  200.     uint32_t b_mask;
  201.  
  202.     struct _cairo_xlib_source {
  203.         cairo_surface_t base;
  204.  
  205.         Picture picture;
  206.         Pixmap pixmap;
  207.         Display *dpy;
  208.  
  209.         unsigned int filter:3;
  210.         unsigned int extend:3;
  211.         unsigned int has_matrix:1;
  212.         unsigned int has_component_alpha:1;
  213.     } embedded_source;
  214. };
  215.  
  216. struct _cairo_xlib_proxy {
  217.     struct _cairo_xlib_source source;
  218.     cairo_surface_t *owner;
  219. };
  220.  
  221. inline static cairo_bool_t
  222. _cairo_xlib_vendor_is_xorg (Display *dpy)
  223. {
  224.     const char *const vendor = ServerVendor (dpy);
  225.     return strstr (vendor, "X.Org") || strstr (vendor, "Xorg");
  226. }
  227.  
  228. cairo_private cairo_status_t
  229. _cairo_xlib_surface_get_gc (cairo_xlib_display_t *display,
  230.                             cairo_xlib_surface_t *surface,
  231.                             GC                   *gc);
  232.  
  233. cairo_private cairo_device_t *
  234. _cairo_xlib_device_create (Display *display);
  235.  
  236. cairo_private void
  237. _cairo_xlib_display_init_shm (cairo_xlib_display_t *display);
  238.  
  239. cairo_private void
  240. _cairo_xlib_display_fini_shm (cairo_xlib_display_t *display);
  241.  
  242. cairo_private cairo_xlib_screen_t *
  243. _cairo_xlib_display_get_screen (cairo_xlib_display_t *display,
  244.                                 Screen *screen);
  245.  
  246. cairo_private cairo_status_t
  247. _cairo_xlib_display_acquire (cairo_device_t *device,
  248.                              cairo_xlib_display_t **display);
  249.  
  250. cairo_private cairo_bool_t
  251. _cairo_xlib_display_has_repeat (cairo_device_t *device);
  252.  
  253. cairo_private cairo_bool_t
  254. _cairo_xlib_display_has_reflect (cairo_device_t *device);
  255.  
  256. cairo_private cairo_bool_t
  257. _cairo_xlib_display_has_gradients (cairo_device_t *device);
  258.  
  259. cairo_private void
  260. _cairo_xlib_display_set_precision(cairo_device_t *device,
  261.                                   int precision);
  262.  
  263. cairo_private XRenderPictFormat *
  264. _cairo_xlib_display_get_xrender_format (cairo_xlib_display_t    *display,
  265.                                         cairo_format_t           format);
  266.  
  267. cairo_private XRenderPictFormat *
  268. _cairo_xlib_display_get_xrender_format_for_pixman (cairo_xlib_display_t *display,
  269.                                                    pixman_format_code_t format);
  270.  
  271. cairo_private cairo_status_t
  272. _cairo_xlib_screen_get (Display *dpy,
  273.                         Screen *screen,
  274.                         cairo_xlib_screen_t **out);
  275.  
  276. cairo_private void
  277. _cairo_xlib_screen_destroy (cairo_xlib_display_t *display,
  278.                             cairo_xlib_screen_t *info);
  279.  
  280. cairo_private GC
  281. _cairo_xlib_screen_get_gc (cairo_xlib_display_t *display,
  282.                            cairo_xlib_screen_t *info,
  283.                            int depth,
  284.                            Drawable drawable);
  285. cairo_private void
  286. _cairo_xlib_screen_put_gc (cairo_xlib_display_t *display,
  287.                            cairo_xlib_screen_t *info,
  288.                            int depth,
  289.                            GC gc);
  290.  
  291. cairo_private cairo_font_options_t *
  292. _cairo_xlib_screen_get_font_options (cairo_xlib_screen_t *info);
  293.  
  294. cairo_private cairo_status_t
  295. _cairo_xlib_screen_get_visual_info (cairo_xlib_display_t *display,
  296.                                     cairo_xlib_screen_t *info,
  297.                                     Visual *visual,
  298.                                     cairo_xlib_visual_info_t **out);
  299.  
  300. cairo_private cairo_status_t
  301. _cairo_xlib_visual_info_create (Display *dpy,
  302.                                 int screen,
  303.                                 VisualID visualid,
  304.                                 cairo_xlib_visual_info_t **out);
  305.  
  306. cairo_private void
  307. _cairo_xlib_visual_info_destroy (cairo_xlib_visual_info_t *info);
  308.  
  309. cairo_private const cairo_compositor_t *
  310. _cairo_xlib_core_compositor_get (void);
  311.  
  312. cairo_private const cairo_compositor_t *
  313. _cairo_xlib_fallback_compositor_get (void);
  314.  
  315. cairo_private const cairo_compositor_t *
  316. _cairo_xlib_mask_compositor_get (void);
  317.  
  318. cairo_private const cairo_compositor_t *
  319. _cairo_xlib_traps_compositor_get (void);
  320.  
  321. cairo_private void
  322. _cairo_xlib_surface_ensure_picture (cairo_xlib_surface_t    *surface);
  323.  
  324. cairo_private void
  325. _cairo_xlib_surface_set_precision (cairo_xlib_surface_t *surface,
  326.                                    cairo_antialias_t     antialias);
  327.  
  328. cairo_private cairo_int_status_t
  329. _cairo_xlib_surface_set_attributes (cairo_xlib_display_t       *display,
  330.                                     cairo_xlib_surface_t       *surface,
  331.                                     cairo_surface_attributes_t *attributes,
  332.                                     double                      xc,
  333.                                     double                      yc);
  334.  
  335. cairo_private cairo_status_t
  336. _cairo_xlib_surface_draw_image (cairo_xlib_surface_t   *surface,
  337.                                 cairo_image_surface_t  *image,
  338.                                 int                    src_x,
  339.                                 int                    src_y,
  340.                                 int                    width,
  341.                                 int                    height,
  342.                                 int                    dst_x,
  343.                                 int                    dst_y);
  344.  
  345. cairo_private cairo_surface_t *
  346. _cairo_xlib_source_create_for_pattern (cairo_surface_t *dst,
  347.                                        const cairo_pattern_t *pattern,
  348.                                        cairo_bool_t is_mask,
  349.                                        const cairo_rectangle_int_t *extents,
  350.                                        const cairo_rectangle_int_t *sample,
  351.                                        int *src_x, int *src_y);
  352.  
  353. cairo_private void
  354. _cairo_xlib_font_close (cairo_xlib_font_t *font);
  355.  
  356. #define CAIRO_RENDER_AT_LEAST(surface, major, minor)    \
  357.         (((surface)->render_major > major) ||                   \
  358.          (((surface)->render_major == major) && ((surface)->render_minor >= minor)))
  359.  
  360. #define CAIRO_RENDER_HAS_CREATE_PICTURE(surface)                CAIRO_RENDER_AT_LEAST((surface), 0, 0)
  361. #define CAIRO_RENDER_HAS_COMPOSITE(surface)             CAIRO_RENDER_AT_LEAST((surface), 0, 0)
  362. #define CAIRO_RENDER_HAS_COMPOSITE_TEXT(surface)        CAIRO_RENDER_AT_LEAST((surface), 0, 0)
  363.  
  364. #define CAIRO_RENDER_HAS_FILL_RECTANGLES(surface)               CAIRO_RENDER_AT_LEAST((surface), 0, 1)
  365.  
  366. #define CAIRO_RENDER_HAS_DISJOINT(surface)                      CAIRO_RENDER_AT_LEAST((surface), 0, 2)
  367. #define CAIRO_RENDER_HAS_CONJOINT(surface)                      CAIRO_RENDER_AT_LEAST((surface), 0, 2)
  368.  
  369. #define CAIRO_RENDER_HAS_TRAPEZOIDS(surface)            CAIRO_RENDER_AT_LEAST((surface), 0, 4)
  370. #define CAIRO_RENDER_HAS_TRIANGLES(surface)             CAIRO_RENDER_AT_LEAST((surface), 0, 4)
  371. #define CAIRO_RENDER_HAS_TRISTRIP(surface)                      CAIRO_RENDER_AT_LEAST((surface), 0, 4)
  372. #define CAIRO_RENDER_HAS_TRIFAN(surface)                        CAIRO_RENDER_AT_LEAST((surface), 0, 4)
  373.  
  374. #define CAIRO_RENDER_HAS_PICTURE_TRANSFORM(surface)     CAIRO_RENDER_AT_LEAST((surface), 0, 6)
  375. #define CAIRO_RENDER_HAS_FILTERS(surface)       CAIRO_RENDER_AT_LEAST((surface), 0, 6)
  376.  
  377. #define CAIRO_RENDER_HAS_EXTENDED_REPEAT(surface)       CAIRO_RENDER_AT_LEAST((surface), 0, 10)
  378. #define CAIRO_RENDER_HAS_GRADIENTS(surface)     CAIRO_RENDER_AT_LEAST((surface), 0, 10)
  379.  
  380. #define CAIRO_RENDER_HAS_PDF_OPERATORS(surface) CAIRO_RENDER_AT_LEAST((surface), 0, 11)
  381.  
  382. #define CAIRO_RENDER_SUPPORTS_OPERATOR(surface, op)     \
  383.      ((op) <= CAIRO_OPERATOR_SATURATE ||                        \
  384.       (CAIRO_RENDER_HAS_PDF_OPERATORS(surface) &&       \
  385.        (op) <= CAIRO_OPERATOR_HSL_LUMINOSITY))
  386.  
  387. /*
  388.  * Return whether two xlib surfaces share the same
  389.  * screen.  Both core and Render drawing require this
  390.  * when using multiple drawables in an operation.
  391.  */
  392. static inline cairo_bool_t
  393. _cairo_xlib_surface_same_screen (cairo_xlib_surface_t *dst,
  394.                                  cairo_xlib_surface_t *src)
  395. {
  396.     return dst->screen == src->screen;
  397. }
  398.  
  399. cairo_private cairo_int_status_t
  400. _cairo_xlib_core_fill_boxes (cairo_xlib_surface_t    *dst,
  401.                              const cairo_color_t     *color,
  402.                              cairo_boxes_t          *boxes);
  403.  
  404. cairo_private cairo_int_status_t
  405. _cairo_xlib_core_fill_rectangles (cairo_xlib_surface_t    *dst,
  406.                                   const cairo_color_t     *color,
  407.                                   int num_rects,
  408.                                   cairo_rectangle_int_t *rects);
  409.  
  410. static inline void
  411. _cairo_xlib_surface_put_gc (cairo_xlib_display_t *display,
  412.                             cairo_xlib_surface_t *surface,
  413.                             GC                    gc)
  414. {
  415.     _cairo_xlib_screen_put_gc (display,
  416.                                surface->screen,
  417.                                surface->depth,
  418.                                gc);
  419. }
  420.  
  421. cairo_private cairo_surface_t *
  422. _cairo_xlib_surface_create_similar_shm (void *surface,
  423.                                         cairo_format_t format,
  424.                                         int width, int height);
  425.  
  426. cairo_private cairo_surface_t *
  427. _cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
  428.                              cairo_bool_t overwrite);
  429.  
  430. cairo_private cairo_int_status_t
  431. _cairo_xlib_surface_put_shm (cairo_xlib_surface_t *surface);
  432.  
  433. cairo_private cairo_surface_t *
  434. _cairo_xlib_surface_create_shm (cairo_xlib_surface_t *other,
  435.                                 pixman_format_code_t format,
  436.                                 int width, int height);
  437.  
  438. cairo_private cairo_surface_t *
  439. _cairo_xlib_surface_create_shm__image (cairo_xlib_surface_t *surface,
  440.                                        pixman_format_code_t format,
  441.                                        int width, int height);
  442.  
  443. cairo_private void
  444. _cairo_xlib_shm_surface_get_ximage (cairo_surface_t *surface,
  445.                                     XImage *ximage);
  446.  
  447. cairo_private void *
  448. _cairo_xlib_shm_surface_get_obdata (cairo_surface_t *surface);
  449.  
  450. cairo_private void
  451. _cairo_xlib_shm_surface_mark_active (cairo_surface_t *shm);
  452.  
  453. cairo_private cairo_bool_t
  454. _cairo_xlib_shm_surface_is_active (cairo_surface_t *surface);
  455.  
  456. cairo_private cairo_bool_t
  457. _cairo_xlib_shm_surface_is_idle (cairo_surface_t *surface);
  458.  
  459. cairo_private Pixmap
  460. _cairo_xlib_shm_surface_get_pixmap (cairo_surface_t *surface);
  461.  
  462. cairo_private XRenderPictFormat *
  463. _cairo_xlib_shm_surface_get_xrender_format (cairo_surface_t *surface);
  464.  
  465. cairo_private pixman_format_code_t
  466. _pixman_format_for_xlib_surface (cairo_xlib_surface_t *surface);
  467.  
  468. #endif /* CAIRO_XLIB_PRIVATE_H */
  469.