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mutter-performance-source/cogl/cogl-pango/cogl-pango-glyph-cache.h

99 lines
3.2 KiB
C

/*
* Cogl
*
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2008 OpenedHand
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
#include <glib.h>
#include <pango/pango-font.h>
#include "cogl/cogl-texture.h"
G_BEGIN_DECLS
typedef struct _CoglPangoGlyphCache CoglPangoGlyphCache;
typedef struct _CoglPangoGlyphCacheValue CoglPangoGlyphCacheValue;
struct _CoglPangoGlyphCacheValue
{
CoglTexture *texture;
float tx1;
float ty1;
float tx2;
float ty2;
int tx_pixel;
int ty_pixel;
int draw_x;
int draw_y;
int draw_width;
int draw_height;
/* This will be set to TRUE when the glyph atlas is reorganized
which means the glyph will need to be redrawn */
guint dirty : 1;
/* Set to TRUE if the glyph has colors (eg. emoji) */
guint has_color : 1;
};
typedef void (* CoglPangoGlyphCacheDirtyFunc) (PangoFont *font,
PangoGlyph glyph,
CoglPangoGlyphCacheValue *value);
COGL_EXPORT CoglPangoGlyphCache *
cogl_pango_glyph_cache_new (CoglContext *ctx,
gboolean use_mipmapping);
COGL_EXPORT void
cogl_pango_glyph_cache_free (CoglPangoGlyphCache *cache);
COGL_EXPORT CoglPangoGlyphCacheValue *
cogl_pango_glyph_cache_lookup (CoglPangoGlyphCache *cache,
gboolean create,
PangoFont *font,
PangoGlyph glyph);
COGL_EXPORT void
cogl_pango_glyph_cache_clear (CoglPangoGlyphCache *cache);
void
_cogl_pango_glyph_cache_add_reorganize_callback (CoglPangoGlyphCache *cache,
GHookFunc func,
void *user_data);
void
_cogl_pango_glyph_cache_remove_reorganize_callback (CoglPangoGlyphCache *cache,
GHookFunc func,
void *user_data);
void
_cogl_pango_glyph_cache_set_dirty_glyphs (CoglPangoGlyphCache *cache,
CoglPangoGlyphCacheDirtyFunc func);
G_END_DECLS