summaryrefslogtreecommitdiff
path: root/src/cairo-xcb-screen.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/cairo-xcb-screen.c')
-rw-r--r--src/cairo-xcb-screen.c494
1 files changed, 494 insertions, 0 deletions
diff --git a/src/cairo-xcb-screen.c b/src/cairo-xcb-screen.c
new file mode 100644
index 000000000..d0019f9cd
--- /dev/null
+++ b/src/cairo-xcb-screen.c
@@ -0,0 +1,494 @@
+/* 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"
+
+#include "cairo-fontconfig-private.h"
+
+static void
+_cairo_xcb_init_screen_font_options (cairo_xcb_screen_t *screen)
+{
+ cairo_xcb_resources_t res;
+ cairo_antialias_t antialias;
+ cairo_subpixel_order_t subpixel_order;
+ cairo_lcd_filter_t lcd_filter;
+ cairo_hint_style_t hint_style;
+
+ _cairo_xcb_resources_get (screen, &res);
+
+ /* the rest of the code in this function is copied from
+ _cairo_xlib_init_screen_font_options in cairo-xlib-screen.c */
+
+ if (res.xft_hinting) {
+ switch (res.xft_hintstyle) {
+ case FC_HINT_NONE:
+ hint_style = CAIRO_HINT_STYLE_NONE;
+ break;
+ case FC_HINT_SLIGHT:
+ hint_style = CAIRO_HINT_STYLE_SLIGHT;
+ break;
+ case FC_HINT_MEDIUM:
+ hint_style = CAIRO_HINT_STYLE_MEDIUM;
+ break;
+ case FC_HINT_FULL:
+ hint_style = CAIRO_HINT_STYLE_FULL;
+ break;
+ default:
+ hint_style = CAIRO_HINT_STYLE_DEFAULT;
+ }
+ } else {
+ hint_style = CAIRO_HINT_STYLE_NONE;
+ }
+
+ switch (res.xft_rgba) {
+ case FC_RGBA_RGB:
+ subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+ break;
+ case FC_RGBA_BGR:
+ subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+ break;
+ case FC_RGBA_VRGB:
+ subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+ break;
+ case FC_RGBA_VBGR:
+ subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+ break;
+ case FC_RGBA_UNKNOWN:
+ case FC_RGBA_NONE:
+ default:
+ subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+ }
+
+ switch (res.xft_lcdfilter) {
+ case FC_LCD_NONE:
+ lcd_filter = CAIRO_LCD_FILTER_NONE;
+ break;
+ case FC_LCD_DEFAULT:
+ lcd_filter = CAIRO_LCD_FILTER_FIR5;
+ break;
+ case FC_LCD_LIGHT:
+ lcd_filter = CAIRO_LCD_FILTER_FIR3;
+ break;
+ case FC_LCD_LEGACY:
+ lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
+ break;
+ default:
+ lcd_filter = CAIRO_LCD_FILTER_DEFAULT;
+ break;
+ }
+
+ if (res.xft_antialias) {
+ if (subpixel_order == CAIRO_SUBPIXEL_ORDER_DEFAULT)
+ antialias = CAIRO_ANTIALIAS_GRAY;
+ else
+ antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+ } else {
+ antialias = CAIRO_ANTIALIAS_NONE;
+ }
+
+ cairo_font_options_set_hint_style (&screen->font_options, hint_style);
+ cairo_font_options_set_antialias (&screen->font_options, antialias);
+ cairo_font_options_set_subpixel_order (&screen->font_options, subpixel_order);
+ _cairo_font_options_set_lcd_filter (&screen->font_options, lcd_filter);
+ cairo_font_options_set_hint_metrics (&screen->font_options, CAIRO_HINT_METRICS_ON);
+}
+
+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);
+}
+
+static int _get_screen_index(cairo_xcb_connection_t *xcb_connection,
+ xcb_screen_t *xcb_screen)
+{
+ int idx = 0;
+ xcb_screen_iterator_t iter = xcb_setup_roots_iterator(xcb_connection->root);
+ for (; iter.rem; xcb_screen_next(&iter), idx++)
+ if (iter.data->root == xcb_screen->root)
+ return idx;
+
+ ASSERT_NOT_REACHED;
+}
+
+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 screen_idx;
+ 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_idx = _get_screen_index(connection, xcb_screen);
+
+ screen->connection = connection;
+ screen->xcb_screen = xcb_screen;
+ screen->has_font_options = FALSE;
+ screen->subpixel_order = connection->subpixel_orders[screen_idx];
+
+ _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;
+}
+
+cairo_font_options_t *
+_cairo_xcb_screen_get_font_options (cairo_xcb_screen_t *screen)
+{
+ if (! screen->has_font_options) {
+ _cairo_font_options_init_default (&screen->font_options);
+ _cairo_font_options_set_round_glyph_positions (&screen->font_options, CAIRO_ROUND_GLYPH_POS_ON);
+
+ /* XXX: This is disabled because something seems to be merging
+ font options incorrectly for xcb. This effectively reverts
+ the changes brought in git e691d242, and restores ~150 tests
+ to resume passing. See mailing list archives for Sep 17,
+ 2014 for more discussion. */
+ if (0 && ! _cairo_xcb_connection_acquire (screen->connection)) {
+ _cairo_xcb_init_screen_font_options (screen);
+ _cairo_xcb_connection_release (screen->connection);
+ }
+
+ screen->has_font_options = TRUE;
+ }
+
+ return &screen->font_options;
+}