63 lines
2 KiB
C
63 lines
2 KiB
C
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// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
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// vim:ts=8:sw=8:noet:ai:
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/*
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Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(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. See the
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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 the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __ASS_CACHE_H__
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#define __ASS_CACHE_H__
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void ass_font_cache_init(void);
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ass_font_t* ass_font_cache_find(ass_font_desc_t* desc);
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void ass_font_cache_add(ass_font_t* font);
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void ass_font_cache_done(void);
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// describes a glyph; glyphs with equivalents structs are considered identical
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typedef struct glyph_hash_key_s {
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char bitmap; // bool : true = bitmap, false = outline
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ass_font_t* font;
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int size; // font size
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uint32_t ch; // character code
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unsigned outline; // border width, 16.16 fixed point value
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int bold, italic;
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char be; // blur edges
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// the following affects bitmap glyphs only
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unsigned scale_x, scale_y; // 16.16
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int frx, fry, frz; // signed 16.16
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FT_Vector advance; // subpixel shift vector
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} glyph_hash_key_t;
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typedef struct glyph_hash_val_s {
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bitmap_t* bm; // the actual glyph bitmaps
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bitmap_t* bm_o;
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bitmap_t* bm_s;
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FT_BBox bbox_scaled; // bbox after scaling, but before rotation
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FT_Vector advance; // 26.6, advance distance to the next glyph in line
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} glyph_hash_val_t;
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void ass_glyph_cache_init(void);
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void cache_add_glyph(glyph_hash_key_t* key, glyph_hash_val_t* val);
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glyph_hash_val_t* cache_find_glyph(glyph_hash_key_t* key);
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void ass_glyph_cache_reset(void);
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void ass_glyph_cache_done(void);
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#endif
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