83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
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#ifndef MUPDF_FITZ_TEXT_H
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#define MUPDF_FITZ_TEXT_H
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#include "mupdf/fitz/system.h"
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#include "mupdf/fitz/context.h"
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#include "mupdf/fitz/font.h"
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#include "mupdf/fitz/path.h"
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#include "mupdf/fitz/bidi.h"
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/*
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Text buffer.
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The trm field contains the a, b, c and d coefficients.
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The e and f coefficients come from the individual elements,
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together they form the transform matrix for the glyph.
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Glyphs are referenced by glyph ID.
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The Unicode text equivalent is kept in a separate array
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with indexes into the glyph array.
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*/
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typedef struct fz_text_s fz_text;
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typedef struct fz_text_span_s fz_text_span;
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typedef struct fz_text_item_s fz_text_item;
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struct fz_text_item_s
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{
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float x, y;
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int gid; /* -1 for one gid to many ucs mappings */
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int ucs; /* -1 for one ucs to many gid mappings */
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};
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#define FZ_LANG_TAG2(c1,c2) ((c1-'a'+1) + ((c2-'a'+1)*27))
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#define FZ_LANG_TAG3(c1,c2,c3) ((c1-'a'+1) + ((c2-'a'+1)*27) + ((c3-'a'+1)*27*27))
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typedef enum fz_text_language_e
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{
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FZ_LANG_UNSET = 0,
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FZ_LANG_ur = FZ_LANG_TAG2('u','r'),
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FZ_LANG_urd = FZ_LANG_TAG3('u','r','d'),
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FZ_LANG_ko = FZ_LANG_TAG2('k','o'),
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FZ_LANG_ja = FZ_LANG_TAG2('j','a'),
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FZ_LANG_zh = FZ_LANG_TAG2('z','h'),
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FZ_LANG_zh_Hans = FZ_LANG_TAG3('z','h','s'),
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FZ_LANG_zh_Hant = FZ_LANG_TAG3('z','h','t'),
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} fz_text_language;
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struct fz_text_span_s
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{
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fz_font *font;
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fz_matrix trm;
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unsigned wmode : 1; /* 0 horizontal, 1 vertical */
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unsigned bidi_level : 7; /* The bidirectional level of text */
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unsigned markup_dir : 2; /* The direction of text as marked in the original document */
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unsigned language : 15; /* The language as marked in the original document */
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int len, cap;
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fz_text_item *items;
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fz_text_span *next;
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};
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struct fz_text_s
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{
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int refs;
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fz_text_span *head, *tail;
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};
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fz_text *fz_new_text(fz_context *ctx);
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fz_text *fz_keep_text(fz_context *ctx, const fz_text *text);
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void fz_drop_text(fz_context *ctx, const fz_text *text);
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void fz_show_glyph(fz_context *ctx, fz_text *text, fz_font *font, fz_matrix trm, int glyph, int unicode, int wmode, int bidi_level, fz_bidi_direction markup_dir, fz_text_language language);
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fz_matrix fz_show_string(fz_context *ctx, fz_text *text, fz_font *font, fz_matrix trm, const char *s, int wmode, int bidi_level, fz_bidi_direction markup_dir, fz_text_language language);
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fz_rect fz_bound_text(fz_context *ctx, const fz_text *text, const fz_stroke_state *stroke, fz_matrix ctm);
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fz_text_language fz_text_language_from_string(const char *str);
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char *fz_string_from_text_language(char str[8], fz_text_language lang);
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#endif
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