diff options
Diffstat (limited to 'Build/source/libs/cairo/cairo-1.12.16/src/cairo-xcb-screen.c')
-rw-r--r-- | Build/source/libs/cairo/cairo-1.12.16/src/cairo-xcb-screen.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/Build/source/libs/cairo/cairo-1.12.16/src/cairo-xcb-screen.c b/Build/source/libs/cairo/cairo-1.12.16/src/cairo-xcb-screen.c new file mode 100644 index 00000000000..2858d23fba3 --- /dev/null +++ b/Build/source/libs/cairo/cairo-1.12.16/src/cairo-xcb-screen.c @@ -0,0 +1,364 @@ +/* Cairo - a vector graphics library with display and print output + * + * Copyright © 2008 Chris Wilson + * Copyright © 2009 Intel Corporation + * + * 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. + * + * Authors: + * Chris Wilson <chris@chris-wilson.co.uk> + */ + +#include "cairoint.h" + +#include "cairo-xcb-private.h" +#include "cairo-list-inline.h" + +struct pattern_cache_entry { + cairo_cache_entry_t key; + cairo_xcb_screen_t *screen; + cairo_pattern_union_t pattern; + cairo_surface_t *picture; +}; + +void +_cairo_xcb_screen_finish (cairo_xcb_screen_t *screen) +{ + int i; + + CAIRO_MUTEX_LOCK (screen->connection->screens_mutex); + cairo_list_del (&screen->link); + CAIRO_MUTEX_UNLOCK (screen->connection->screens_mutex); + + while (! cairo_list_is_empty (&screen->surfaces)) { + cairo_surface_t *surface; + + surface = &cairo_list_first_entry (&screen->surfaces, + cairo_xcb_surface_t, + link)->base; + + cairo_surface_finish (surface); + } + + while (! cairo_list_is_empty (&screen->pictures)) { + cairo_surface_t *surface; + + surface = &cairo_list_first_entry (&screen->pictures, + cairo_xcb_picture_t, + link)->base; + + cairo_surface_finish (surface); + } + + for (i = 0; i < screen->solid_cache_size; i++) + cairo_surface_destroy (screen->solid_cache[i].picture); + + for (i = 0; i < ARRAY_LENGTH (screen->stock_colors); i++) + cairo_surface_destroy (screen->stock_colors[i]); + + for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) { + if (screen->gc_depths[i] != 0) + _cairo_xcb_connection_free_gc (screen->connection, screen->gc[i]); + } + + _cairo_cache_fini (&screen->linear_pattern_cache); + _cairo_cache_fini (&screen->radial_pattern_cache); + _cairo_freelist_fini (&screen->pattern_cache_entry_freelist); + + free (screen); +} + +static cairo_bool_t +_linear_pattern_cache_entry_equal (const void *A, const void *B) +{ + const struct pattern_cache_entry *a = A, *b = B; + + return _cairo_linear_pattern_equal (&a->pattern.gradient.linear, + &b->pattern.gradient.linear); +} + +static cairo_bool_t +_radial_pattern_cache_entry_equal (const void *A, const void *B) +{ + const struct pattern_cache_entry *a = A, *b = B; + + return _cairo_radial_pattern_equal (&a->pattern.gradient.radial, + &b->pattern.gradient.radial); +} + +static void +_pattern_cache_entry_destroy (void *closure) +{ + struct pattern_cache_entry *entry = closure; + + _cairo_pattern_fini (&entry->pattern.base); + cairo_surface_destroy (entry->picture); + _cairo_freelist_free (&entry->screen->pattern_cache_entry_freelist, entry); +} + +cairo_xcb_screen_t * +_cairo_xcb_screen_get (xcb_connection_t *xcb_connection, + xcb_screen_t *xcb_screen) +{ + cairo_xcb_connection_t *connection; + cairo_xcb_screen_t *screen; + cairo_status_t status; + int i; + + connection = _cairo_xcb_connection_get (xcb_connection); + if (unlikely (connection == NULL)) + return NULL; + + CAIRO_MUTEX_LOCK (connection->screens_mutex); + + cairo_list_foreach_entry (screen, + cairo_xcb_screen_t, + &connection->screens, + link) + { + if (screen->xcb_screen == xcb_screen) { + /* Maintain list in MRU order */ + if (&screen->link != connection->screens.next) + cairo_list_move (&screen->link, &connection->screens); + + goto unlock; + } + } + + screen = malloc (sizeof (cairo_xcb_screen_t)); + if (unlikely (screen == NULL)) + goto unlock; + + screen->connection = connection; + screen->xcb_screen = xcb_screen; + + _cairo_freelist_init (&screen->pattern_cache_entry_freelist, + sizeof (struct pattern_cache_entry)); + cairo_list_init (&screen->link); + cairo_list_init (&screen->surfaces); + cairo_list_init (&screen->pictures); + + memset (screen->gc_depths, 0, sizeof (screen->gc_depths)); + memset (screen->gc, 0, sizeof (screen->gc)); + + screen->solid_cache_size = 0; + for (i = 0; i < ARRAY_LENGTH (screen->stock_colors); i++) + screen->stock_colors[i] = NULL; + + status = _cairo_cache_init (&screen->linear_pattern_cache, + _linear_pattern_cache_entry_equal, + NULL, + _pattern_cache_entry_destroy, + 16); + if (unlikely (status)) + goto error_screen; + + status = _cairo_cache_init (&screen->radial_pattern_cache, + _radial_pattern_cache_entry_equal, + NULL, + _pattern_cache_entry_destroy, + 4); + if (unlikely (status)) + goto error_linear; + + cairo_list_add (&screen->link, &connection->screens); + +unlock: + CAIRO_MUTEX_UNLOCK (connection->screens_mutex); + + return screen; + +error_linear: + _cairo_cache_fini (&screen->linear_pattern_cache); +error_screen: + CAIRO_MUTEX_UNLOCK (connection->screens_mutex); + free (screen); + + return NULL; +} + +static xcb_gcontext_t +_create_gc (cairo_xcb_screen_t *screen, + xcb_drawable_t drawable) +{ + uint32_t values[] = { 0 }; + + return _cairo_xcb_connection_create_gc (screen->connection, drawable, + XCB_GC_GRAPHICS_EXPOSURES, + values); +} + +xcb_gcontext_t +_cairo_xcb_screen_get_gc (cairo_xcb_screen_t *screen, + xcb_drawable_t drawable, + int depth) +{ + int i; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) { + if (screen->gc_depths[i] == depth) { + screen->gc_depths[i] = 0; + return screen->gc[i]; + } + } + + return _create_gc (screen, drawable); +} + +void +_cairo_xcb_screen_put_gc (cairo_xcb_screen_t *screen, int depth, xcb_gcontext_t gc) +{ + int i; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) { + if (screen->gc_depths[i] == 0) + break; + } + + if (i == ARRAY_LENGTH (screen->gc)) { + /* perform random substitution to ensure fair caching over depths */ + i = rand () % ARRAY_LENGTH (screen->gc); + _cairo_xcb_connection_free_gc (screen->connection, screen->gc[i]); + } + + screen->gc[i] = gc; + screen->gc_depths[i] = depth; +} + +cairo_status_t +_cairo_xcb_screen_store_linear_picture (cairo_xcb_screen_t *screen, + const cairo_linear_pattern_t *linear, + cairo_surface_t *picture) +{ + struct pattern_cache_entry *entry; + cairo_status_t status; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + entry = _cairo_freelist_alloc (&screen->pattern_cache_entry_freelist); + if (unlikely (entry == NULL)) + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + + entry->key.hash = _cairo_linear_pattern_hash (_CAIRO_HASH_INIT_VALUE, linear); + entry->key.size = 1; + + status = _cairo_pattern_init_copy (&entry->pattern.base, &linear->base.base); + if (unlikely (status)) { + _cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry); + return status; + } + + entry->picture = cairo_surface_reference (picture); + entry->screen = screen; + + status = _cairo_cache_insert (&screen->linear_pattern_cache, + &entry->key); + if (unlikely (status)) { + cairo_surface_destroy (picture); + _cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry); + return status; + } + + return CAIRO_STATUS_SUCCESS; +} + +cairo_surface_t * +_cairo_xcb_screen_lookup_linear_picture (cairo_xcb_screen_t *screen, + const cairo_linear_pattern_t *linear) +{ + cairo_surface_t *picture = NULL; + struct pattern_cache_entry tmpl; + struct pattern_cache_entry *entry; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + tmpl.key.hash = _cairo_linear_pattern_hash (_CAIRO_HASH_INIT_VALUE, linear); + _cairo_pattern_init_static_copy (&tmpl.pattern.base, &linear->base.base); + + entry = _cairo_cache_lookup (&screen->linear_pattern_cache, &tmpl.key); + if (entry != NULL) + picture = cairo_surface_reference (entry->picture); + + return picture; +} + +cairo_status_t +_cairo_xcb_screen_store_radial_picture (cairo_xcb_screen_t *screen, + const cairo_radial_pattern_t *radial, + cairo_surface_t *picture) +{ + struct pattern_cache_entry *entry; + cairo_status_t status; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + entry = _cairo_freelist_alloc (&screen->pattern_cache_entry_freelist); + if (unlikely (entry == NULL)) + return _cairo_error (CAIRO_STATUS_NO_MEMORY); + + entry->key.hash = _cairo_radial_pattern_hash (_CAIRO_HASH_INIT_VALUE, radial); + entry->key.size = 1; + + status = _cairo_pattern_init_copy (&entry->pattern.base, &radial->base.base); + if (unlikely (status)) { + _cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry); + return status; + } + + entry->picture = cairo_surface_reference (picture); + entry->screen = screen; + + status = _cairo_cache_insert (&screen->radial_pattern_cache, &entry->key); + if (unlikely (status)) { + cairo_surface_destroy (picture); + _cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry); + return status; + } + + return CAIRO_STATUS_SUCCESS; +} + +cairo_surface_t * +_cairo_xcb_screen_lookup_radial_picture (cairo_xcb_screen_t *screen, + const cairo_radial_pattern_t *radial) +{ + cairo_surface_t *picture = NULL; + struct pattern_cache_entry tmpl; + struct pattern_cache_entry *entry; + + assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex)); + + tmpl.key.hash = _cairo_radial_pattern_hash (_CAIRO_HASH_INIT_VALUE, radial); + _cairo_pattern_init_static_copy (&tmpl.pattern.base, &radial->base.base); + + entry = _cairo_cache_lookup (&screen->radial_pattern_cache, &tmpl.key); + if (entry != NULL) + picture = cairo_surface_reference (entry->picture); + + return picture; +} |