103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
|
/*
|
||
|
|
* Copyright © 2022 Behdad Esfahbod
|
||
|
|
*
|
||
|
|
* This is part of HarfBuzz, a text shaping library.
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, without written agreement and without
|
||
|
|
* license or royalty fees, to use, copy, modify, and distribute this
|
||
|
|
* software and its documentation for any purpose, provided that the
|
||
|
|
* above copyright notice and the following two paragraphs appear in
|
||
|
|
* all copies of this software.
|
||
|
|
*
|
||
|
|
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
||
|
|
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
||
|
|
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||
|
|
* DAMAGE.
|
||
|
|
*
|
||
|
|
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
||
|
|
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||
|
|
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
||
|
|
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef HB_FT_COLR_HH
|
||
|
|
#define HB_FT_COLR_HH
|
||
|
|
|
||
|
|
#include "hb.hh"
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef HB_NO_PAINT
|
||
|
|
static bool
|
||
|
|
hb_ft_paint_glyph_colr (hb_font_t *font,
|
||
|
|
void *font_data,
|
||
|
|
hb_codepoint_t gid,
|
||
|
|
hb_paint_funcs_t *paint_funcs, void *paint_data,
|
||
|
|
unsigned int palette_index,
|
||
|
|
hb_color_t foreground,
|
||
|
|
void *user_data)
|
||
|
|
{
|
||
|
|
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
|
||
|
|
FT_Face ft_face = ft_font->ft_face;
|
||
|
|
|
||
|
|
/* Face is locked. */
|
||
|
|
|
||
|
|
/* COLRv0 */
|
||
|
|
FT_Error error;
|
||
|
|
FT_Color* palette;
|
||
|
|
FT_LayerIterator iterator;
|
||
|
|
|
||
|
|
FT_Bool have_layers;
|
||
|
|
FT_UInt layer_glyph_index;
|
||
|
|
FT_UInt layer_color_index;
|
||
|
|
|
||
|
|
error = FT_Palette_Select(ft_face, palette_index, &palette);
|
||
|
|
if ( error )
|
||
|
|
palette = NULL;
|
||
|
|
|
||
|
|
iterator.p = NULL;
|
||
|
|
have_layers = FT_Get_Color_Glyph_Layer(ft_face,
|
||
|
|
gid,
|
||
|
|
&layer_glyph_index,
|
||
|
|
&layer_color_index,
|
||
|
|
&iterator);
|
||
|
|
|
||
|
|
if (palette && have_layers)
|
||
|
|
{
|
||
|
|
do
|
||
|
|
{
|
||
|
|
hb_bool_t is_foreground = true;
|
||
|
|
hb_color_t color = foreground;
|
||
|
|
|
||
|
|
if ( layer_color_index != 0xFFFF )
|
||
|
|
{
|
||
|
|
FT_Color layer_color = palette[layer_color_index];
|
||
|
|
color = HB_COLOR (layer_color.blue,
|
||
|
|
layer_color.green,
|
||
|
|
layer_color.red,
|
||
|
|
layer_color.alpha);
|
||
|
|
is_foreground = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
ft_font->lock.unlock ();
|
||
|
|
paint_funcs->push_clip_glyph (paint_data, layer_glyph_index, font);
|
||
|
|
paint_funcs->color (paint_data, is_foreground, color);
|
||
|
|
paint_funcs->pop_clip (paint_data);
|
||
|
|
ft_font->lock.lock ();
|
||
|
|
|
||
|
|
} while (FT_Get_Color_Glyph_Layer(ft_face,
|
||
|
|
gid,
|
||
|
|
&layer_glyph_index,
|
||
|
|
&layer_color_index,
|
||
|
|
&iterator));
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* HB_FT_COLR_HH */
|