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/* 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
*
* 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)
xcb_free_gc (screen->connection->xcb_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 = _cairo_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);
xcb_free_gc (screen->connection->xcb_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;
}