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cogl-pango: Cache whether glyphs are backed up by a color font

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This will be necessary later on.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1148
This commit is contained in:
Carlos Garnacho 2020-03-25 00:28:30 +01:00 committed by Carlos Garnacho
parent d4c070da88
commit 40fb06ca17
3 changed files with 25 additions and 1 deletions
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1
cogl/cogl-pango/cogl-pango-display-list.c
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@ -81,6 +81,7 @@ struct _CoglPangoDisplayListNode
GArray *rectangles; GArray *rectangles;
/* A primitive representing those vertices */ /* A primitive representing those vertices */
CoglPrimitive *primitive; CoglPrimitive *primitive;
guint has_color : 1;
} texture; } texture;
struct struct

4
cogl/cogl-pango/cogl-pango-glyph-cache.h
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@ -58,7 +58,9 @@ struct _CoglPangoGlyphCacheValue
/* This will be set to TRUE when the glyph atlas is reorganized /* This will be set to TRUE when the glyph atlas is reorganized
which means the glyph will need to be redrawn */ which means the glyph will need to be redrawn */
gboolean dirty; guint dirty : 1;
/* Set to TRUE if the glyph has colors (eg. emoji) */
guint has_color : 1;
}; };
typedef void (* CoglPangoGlyphCacheDirtyFunc) (PangoFont *font, typedef void (* CoglPangoGlyphCacheDirtyFunc) (PangoFont *font,

21
cogl/cogl-pango/cogl-pango-render.c
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@ -50,6 +50,7 @@
#include <pango/pangocairo.h> #include <pango/pangocairo.h>
#include <pango/pango-renderer.h> #include <pango/pango-renderer.h>
#include <cairo.h> #include <cairo.h>
#include <cairo-ft.h>
#include "cogl/cogl-debug.h" #include "cogl/cogl-debug.h"
#include "cogl/cogl-context-private.h" #include "cogl/cogl-context-private.h"
@ -526,6 +527,24 @@ cogl_pango_renderer_get_cached_glyph (PangoRenderer *renderer,
create, font, glyph); create, font, glyph);
} }
static gboolean
font_has_color_glyphs (const PangoFont *font)
{
cairo_scaled_font_t *scaled_font;
gboolean has_color = FALSE;
scaled_font = pango_cairo_font_get_scaled_font ((PangoCairoFont *) font);
if (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_FT)
{
FT_Face ft_face = cairo_ft_scaled_font_lock_face (scaled_font);
has_color = (FT_HAS_COLOR (ft_face) != 0);
cairo_ft_scaled_font_unlock_face (scaled_font);
}
return has_color;
}
static void static void
cogl_pango_renderer_set_dirty_glyph (PangoFont *font, cogl_pango_renderer_set_dirty_glyph (PangoFont *font,
PangoGlyph glyph, PangoGlyph glyph,
@ -600,6 +619,8 @@ cogl_pango_renderer_set_dirty_glyph (PangoFont *font,
cairo_image_surface_get_data (surface)); cairo_image_surface_get_data (surface));
cairo_surface_destroy (surface); cairo_surface_destroy (surface);
value->has_color = font_has_color_glyphs (font);
} }
static void static void