[ft] Add hb-ft-colr.hh
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Behdad Esfahbod
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5bd3c07b54
commit
e2546f5ab0
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@ -305,7 +305,7 @@ HB_BASE_headers = \
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# Optional Sources and Headers with external deps
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HB_FT_sources = hb-ft.cc
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HB_FT_sources = hb-ft.cc hb-ft-colr.hh
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HB_FT_headers = hb-ft.h
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HB_GLIB_sources = hb-glib.cc
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@ -0,0 +1,102 @@
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/*
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* Copyright © 2022 Behdad Esfahbod
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef HB_FT_COLR_HH
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#define HB_FT_COLR_HH
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#include "hb.hh"
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#ifndef HB_NO_PAINT
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static bool
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hb_ft_paint_glyph_colr (hb_font_t *font,
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void *font_data,
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hb_codepoint_t gid,
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hb_paint_funcs_t *paint_funcs, void *paint_data,
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unsigned int palette_index,
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hb_color_t foreground,
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void *user_data)
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{
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const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
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FT_Face ft_face = ft_font->ft_face;
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/* Face is locked. */
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/* COLRv0 */
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FT_Error error;
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FT_Color* palette;
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FT_LayerIterator iterator;
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FT_Bool have_layers;
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FT_UInt layer_glyph_index;
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FT_UInt layer_color_index;
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error = FT_Palette_Select(ft_face, palette_index, &palette);
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if ( error )
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palette = NULL;
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iterator.p = NULL;
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have_layers = FT_Get_Color_Glyph_Layer(ft_face,
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gid,
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&layer_glyph_index,
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&layer_color_index,
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&iterator);
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if (palette && have_layers)
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{
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do
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{
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hb_bool_t is_foreground = true;
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hb_color_t color = foreground;
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if ( layer_color_index != 0xFFFF )
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{
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FT_Color layer_color = palette[layer_color_index];
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color = HB_COLOR (layer_color.blue,
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layer_color.green,
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layer_color.red,
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layer_color.alpha);
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is_foreground = false;
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}
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ft_font->lock.unlock ();
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paint_funcs->push_clip_glyph (paint_data, layer_glyph_index, font);
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paint_funcs->color (paint_data, is_foreground, color);
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paint_funcs->pop_clip (paint_data);
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ft_font->lock.lock ();
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} while (FT_Get_Color_Glyph_Layer(ft_face,
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gid,
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&layer_glyph_index,
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&layer_color_index,
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&iterator));
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return true;
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}
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return false;
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}
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#endif
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#endif /* HB_FT_COLR_HH */
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60
src/hb-ft.cc
60
src/hb-ft.cc
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@ -814,6 +814,9 @@ hb_ft_draw_glyph (hb_font_t *font HB_UNUSED,
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#endif
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#ifndef HB_NO_PAINT
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#include "hb-ft-colr.hh"
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static void
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hb_ft_paint_glyph (hb_font_t *font,
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void *font_data,
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@ -836,58 +839,11 @@ hb_ft_paint_glyph (hb_font_t *font,
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if (ft_face->glyph->format == FT_GLYPH_FORMAT_OUTLINE)
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{
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/* COLRv0 */
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{
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FT_Error error;
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FT_Color* palette;
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FT_LayerIterator iterator;
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FT_Bool have_layers;
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FT_UInt layer_glyph_index;
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FT_UInt layer_color_index;
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error = FT_Palette_Select(ft_face, palette_index, &palette);
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if ( error )
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palette = NULL;
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iterator.p = NULL;
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have_layers = FT_Get_Color_Glyph_Layer(ft_face,
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gid,
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&layer_glyph_index,
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&layer_color_index,
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&iterator);
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if (palette && have_layers)
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{
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do
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{
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hb_bool_t is_foreground = true;
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hb_color_t color = foreground;
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if ( layer_color_index != 0xFFFF )
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{
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FT_Color layer_color = palette[layer_color_index];
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color = HB_COLOR (layer_color.blue,
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layer_color.green,
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layer_color.red,
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layer_color.alpha);
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is_foreground = false;
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}
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ft_font->lock.unlock ();
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paint_funcs->push_clip_glyph (paint_data, layer_glyph_index, font);
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paint_funcs->color (paint_data, is_foreground, color);
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paint_funcs->pop_clip (paint_data);
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ft_font->lock.lock ();
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} while (FT_Get_Color_Glyph_Layer(ft_face,
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gid,
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&layer_glyph_index,
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&layer_color_index,
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&iterator));
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return;
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}
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}
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if (hb_ft_paint_glyph_colr (font, font_data, gid,
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paint_funcs, paint_data,
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palette_index, foreground,
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user_data))
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return;
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/* Simple outline. */
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ft_font->lock.unlock ();
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@ -305,7 +305,7 @@ hb_base_headers += hb_version_h
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# Optional Sources and Headers with external deps
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hb_ft_sources = files('hb-ft.cc')
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hb_ft_sources = files('hb-ft.cc', 'hb-ft-colr.hh')
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hb_ft_headers = files('hb-ft.h')
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hb_glib_sources = files('hb-glib.cc')
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