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https://git.code.sf.net/p/quake/quakeforge
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116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/*
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text.h
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Text management
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Copyright (C) 2022 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2022/9/4
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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_text_h
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#define __QF_ui_text_h
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#include <hb.h>
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#include <hb-ft.h>
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#include "QF/darray.h"
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#include "QF/ecs/component.h"
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typedef struct script_component_s {
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hb_language_t language;
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hb_script_t script;
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hb_direction_t direction;
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} script_component_t;
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typedef struct glyphobj_s {
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int glyphid;
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int x, y;
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int fontid;
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} glyphobj_t;
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typedef struct glyphref_s {
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uint32_t start;
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uint32_t count;
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} glyphref_t;
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typedef struct glyphset_s {
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glyphobj_t *glyphs;
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uint32_t count;
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} glyphset_t;
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typedef struct text_s {
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const char *text;
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const char *language;
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hb_script_t script;
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hb_direction_t direction;
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} text_t;
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enum {
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// covers both view and passage text object hierarcies
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text_href,
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// all the glyhphs in a passage
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text_passage,
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text_glyphs,
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text_script,
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text_font,
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text_features,
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text_type_count
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};
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typedef struct featureset_s DARRAY_TYPE (hb_feature_t) featureset_t;
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struct font_s;
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struct rglyph_s;
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typedef void text_render_t (uint32_t glyphid, int x, int y, void *data);
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typedef struct shaper_s {
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struct font_s *rfont;
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hb_font_t *font;
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hb_buffer_t *buffer;
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featureset_t features;
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} shaper_t;
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extern hb_feature_t LigatureOff;
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extern hb_feature_t LigatureOn;
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extern hb_feature_t KerningOff;
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extern hb_feature_t KerningOn;
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extern hb_feature_t CligOff;
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extern hb_feature_t CligOn;
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struct font_s;
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struct passage_s;
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extern struct ecs_registry_s *text_reg;
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shaper_t *Text_NewShaper (struct font_s *font);
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void Text_DeleteShaper (shaper_t *shaper);
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void Text_AddFeature (shaper_t *shaper, hb_feature_t feature);
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void Text_ShapeText (shaper_t *shaper, text_t *text);
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void Text_RenderText (shaper_t *shaper, text_t *text, int x, int y,
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text_render_t *render, void *data);
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void Text_Init (void);
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struct view_s Text_View (struct font_s *font, struct passage_s *passage);
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#endif//__QF_ui_text_h
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