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79ab2f7ba7
Shaped text is cached using all the shaping parameters as well as the text itself as a key. This makes text shaping a non-issue for imui when the text is stable, taking my simple test from 120fps to 1000fps (optimized build).
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
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shaper.h
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Text shaping system
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Copyright (C) 2023 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2023/07/07
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __QF_ui_shaper_h
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#define __QF_ui_shaper_h
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#include "QF/ui/text.h"
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typedef struct text_shaper_s text_shaper_t;
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typedef struct shaped_glyphs_s {
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const hb_glyph_info_t *glyphInfo;
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const hb_glyph_position_t *glyphPos;
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unsigned count;
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} shaped_glyphs_t;
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typedef struct shaping_s {
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const script_component_t *script;
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const featureset_t *features;
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const struct font_s *font;
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} shaping_t;
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text_shaper_t *Shaper_New (void);
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void Shaper_Delete (text_shaper_t *shaper);
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void Shaper_FlushUnused (text_shaper_t *shaper);
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shaped_glyphs_t Shaper_ShapeText (text_shaper_t *shaper,
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const shaping_t *control,
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const char *text, size_t text_len);
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#endif//__QF_ui_shaper_h
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