104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
|
/* gskglglyphlibraryprivate.h
|
||
|
|
*
|
||
|
|
* Copyright 2020 Christian Hergert <chergert@redhat.com>
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This library is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <pango/pango.h>
|
||
|
|
|
||
|
|
#include "gskgltexturelibraryprivate.h"
|
||
|
|
|
||
|
|
G_BEGIN_DECLS
|
||
|
|
|
||
|
|
#define GSK_TYPE_GL_GLYPH_LIBRARY (gsk_gl_glyph_library_get_type())
|
||
|
|
|
||
|
|
typedef struct _GskGLGlyphKey
|
||
|
|
{
|
||
|
|
PangoFont *font;
|
||
|
|
PangoGlyph glyph;
|
||
|
|
guint xshift : 2;
|
||
|
|
guint yshift : 2;
|
||
|
|
guint scale : 28; /* times 1024 */
|
||
|
|
} GskGLGlyphKey;
|
||
|
|
|
||
|
|
typedef struct _GskGLGlyphValue
|
||
|
|
{
|
||
|
|
GskGLTextureAtlasEntry entry;
|
||
|
|
PangoRectangle ink_rect;
|
||
|
|
} GskGLGlyphValue;
|
||
|
|
|
||
|
|
#if GLIB_SIZEOF_VOID_P == 8
|
||
|
|
G_STATIC_ASSERT (sizeof (GskGLGlyphKey) == 16);
|
||
|
|
#elif GLIB_SIZEOF_VOID_P == 4
|
||
|
|
G_STATIC_ASSERT (sizeof (GskGLGlyphKey) == 12);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
G_DECLARE_FINAL_TYPE (GskGLGlyphLibrary, gsk_gl_glyph_library, GSK, GL_GLYPH_LIBRARY, GskGLTextureLibrary)
|
||
|
|
|
||
|
|
struct _GskGLGlyphLibrary
|
||
|
|
{
|
||
|
|
GskGLTextureLibrary parent_instance;
|
||
|
|
guint8 *surface_data;
|
||
|
|
gsize surface_data_len;
|
||
|
|
struct {
|
||
|
|
GskGLGlyphKey key;
|
||
|
|
const GskGLGlyphValue *value;
|
||
|
|
} front[256];
|
||
|
|
};
|
||
|
|
|
||
|
|
GskGLGlyphLibrary *gsk_gl_glyph_library_new (GskGLDriver *driver);
|
||
|
|
gboolean gsk_gl_glyph_library_add (GskGLGlyphLibrary *self,
|
||
|
|
GskGLGlyphKey *key,
|
||
|
|
const GskGLGlyphValue **out_value);
|
||
|
|
|
||
|
|
static inline guint
|
||
|
|
gsk_gl_glyph_library_lookup_or_add (GskGLGlyphLibrary *self,
|
||
|
|
const GskGLGlyphKey *key,
|
||
|
|
const GskGLGlyphValue **out_value)
|
||
|
|
{
|
||
|
|
GskGLTextureAtlasEntry *entry;
|
||
|
|
guint front_index = ((key->glyph << 2) | key->xshift) & 0xFF;
|
||
|
|
|
||
|
|
if (memcmp (key, &self->front[front_index], sizeof *key) == 0)
|
||
|
|
{
|
||
|
|
*out_value = self->front[front_index].value;
|
||
|
|
}
|
||
|
|
else if (gsk_gl_texture_library_lookup ((GskGLTextureLibrary *)self, key, &entry))
|
||
|
|
{
|
||
|
|
*out_value = (GskGLGlyphValue *)entry;
|
||
|
|
self->front[front_index].key = *key;
|
||
|
|
self->front[front_index].value = *out_value;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
GskGLGlyphKey *k;
|
||
|
|
k = g_new (GskGLGlyphKey, 1);
|
||
|
|
memcpy (k, key, sizeof (GskGLGlyphKey));
|
||
|
|
g_object_ref (k->font);
|
||
|
|
gsk_gl_glyph_library_add (self, k, out_value);
|
||
|
|
self->front[front_index].key = *key;
|
||
|
|
self->front[front_index].value = *out_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
return GSK_GL_TEXTURE_ATLAS_ENTRY_TEXTURE (*out_value);
|
||
|
|
}
|
||
|
|
|
||
|
|
G_END_DECLS
|
||
|
|
|