76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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* Copyright (C) 2009 Grigori Goronzy <greg@geekmind.org>
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*
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* This file is part of libass.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef LIBASS_DRAWING_H
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#define LIBASS_DRAWING_H
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#include <ft2build.h>
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#include FT_GLYPH_H
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#include "ass.h"
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#define DRAWING_INITIAL_SIZE 256
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enum ass_token_type {
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TOKEN_MOVE,
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TOKEN_MOVE_NC,
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TOKEN_LINE,
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TOKEN_CUBIC_BEZIER,
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TOKEN_CONIC_BEZIER,
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TOKEN_B_SPLINE,
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TOKEN_EXTEND_SPLINE,
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TOKEN_CLOSE
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};
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typedef struct ass_drawing_token_s {
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enum ass_token_type type;
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FT_Vector point;
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struct ass_drawing_token_s *next;
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struct ass_drawing_token_s *prev;
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} ass_drawing_token_t;
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typedef struct ass_drawing_s {
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char *text; // drawing string
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int i; // text index
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int scale; // scale (1-64) for subpixel accuracy
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double pbo; // drawing will be shifted in y direction by this amount
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double scale_x; // FontScaleX
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double scale_y; // FontScaleY
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int asc; // ascender
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int desc; // descender
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FT_OutlineGlyph glyph; // the "fake" glyph created for later rendering
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int hash; // hash value (for caching)
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// private
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FT_Library ftlibrary; // FT library instance, needed for font ops
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int size; // current buffer size
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ass_drawing_token_t *tokens; // tokenized drawing
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int max_points; // current maximum size
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int max_contours;
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double point_scale_x;
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double point_scale_y;
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} ass_drawing_t;
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ass_drawing_t *ass_drawing_new(void *fontconfig_priv, ass_font_t *font,
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ass_hinting_t hint, FT_Library lib);
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void ass_drawing_free(ass_drawing_t* drawing);
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void ass_drawing_add_char(ass_drawing_t* drawing, char symbol);
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void ass_drawing_hash(ass_drawing_t* drawing);
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FT_OutlineGlyph *ass_drawing_parse(ass_drawing_t *drawing);
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#endif /* LIBASS_DRAWING_H */
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