Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/include/mupdf/fitz/text.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 // Copyright (C) 2004-2024 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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23 #ifndef MUPDF_FITZ_TEXT_H
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24 #define MUPDF_FITZ_TEXT_H
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26 #include "mupdf/fitz/system.h"
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27 #include "mupdf/fitz/context.h"
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28 #include "mupdf/fitz/font.h"
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29 #include "mupdf/fitz/path.h"
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30 #include "mupdf/fitz/bidi.h"
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31
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32 /**
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33 Text buffer.
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34
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35 The trm field contains the a, b, c and d coefficients.
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36 The e and f coefficients come from the individual elements,
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37 together they form the transform matrix for the glyph.
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38
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39 Glyphs are referenced by glyph ID.
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40 The Unicode text equivalent is kept in a separate array
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41 with indexes into the glyph array.
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42 */
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43
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44 typedef struct
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45 {
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46 float x, y;
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47 float adv; /* advance width given by input format */
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48 int gid; /* -1 for one gid to many ucs mappings */
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49 int ucs; /* -1 for one ucs to many gid mappings */
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50 int cid; /* CID for CJK fonts, raw character code for other fonts; or unicode for non-PDF formats. */
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51 } fz_text_item;
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52
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53 #define FZ_LANG_TAG2(c1,c2) ((c1-'a'+1) + ((c2-'a'+1)*27))
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54 #define FZ_LANG_TAG3(c1,c2,c3) ((c1-'a'+1) + ((c2-'a'+1)*27) + ((c3-'a'+1)*27*27))
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55
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56 typedef enum
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57 {
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58 FZ_LANG_UNSET = 0,
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59 FZ_LANG_ur = FZ_LANG_TAG2('u','r'),
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60 FZ_LANG_urd = FZ_LANG_TAG3('u','r','d'),
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61 FZ_LANG_ko = FZ_LANG_TAG2('k','o'),
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62 FZ_LANG_ja = FZ_LANG_TAG2('j','a'),
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63 FZ_LANG_zh = FZ_LANG_TAG2('z','h'),
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64 FZ_LANG_zh_Hans = FZ_LANG_TAG3('z','h','s'),
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65 FZ_LANG_zh_Hant = FZ_LANG_TAG3('z','h','t'),
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66 } fz_text_language;
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67
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68 typedef struct fz_text_span
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69 {
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70 fz_font *font;
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71 fz_matrix trm;
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72 unsigned wmode : 1; /* 0 horizontal, 1 vertical */
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73 unsigned bidi_level : 7; /* The bidirectional level of text */
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74 unsigned markup_dir : 2; /* The direction of text as marked in the original document */
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75 unsigned language : 15; /* The language as marked in the original document */
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76 int len, cap;
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77 fz_text_item *items;
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78 struct fz_text_span *next;
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79 } fz_text_span;
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80
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81 typedef struct
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82 {
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83 int refs;
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84 fz_text_span *head, *tail;
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85 } fz_text;
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86
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87 /**
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88 Create a new empty fz_text object.
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89
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90 Throws exception on failure to allocate.
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91 */
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92 fz_text *fz_new_text(fz_context *ctx);
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93
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94 /**
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95 Increment the reference count for the text object. The same
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96 pointer is returned.
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97
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98 Never throws exceptions.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
99 */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
100 fz_text *fz_keep_text(fz_context *ctx, const fz_text *text);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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101
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
102 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
103 Decrement the reference count for the text object. When the
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
104 reference count hits zero, the text object is freed.
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parents:
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105
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 Never throws exceptions.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
107 */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
108 void fz_drop_text(fz_context *ctx, const fz_text *text);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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109
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
110 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
111 Add a glyph/unicode value to a text object.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
112
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
113 text: Text object to add to.
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parents:
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114
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
115 font: The font the glyph should be added in.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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116
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
117 trm: The transform to use for the glyph.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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118
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
119 glyph: The glyph id to add.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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120
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
121 unicode: The unicode character for the glyph.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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122
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
123 cid: The CJK CID value or raw character code.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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124
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
125 wmode: 1 for vertical mode, 0 for horizontal.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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126
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
127 bidi_level: The bidirectional level for this glyph.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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128
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
129 markup_dir: The direction of the text as specified in the
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
130 markup.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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131
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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132 language: The language in use (if known, 0 otherwise)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
133 (e.g. FZ_LANG_zh_Hans).
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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134
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
135 Throws exception on failure to allocate.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
136 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
137 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);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
138 void fz_show_glyph_aux(fz_context *ctx, fz_text *text, fz_font *font, fz_matrix trm, float adv, int glyph, int unicode, int cid, int wmode, int bidi_level, fz_bidi_direction markup_dir, fz_text_language lang);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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139
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
140 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
141 Add a UTF8 string to a text object.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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142
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
143 text: Text object to add to.
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parents:
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144
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
145 font: The font the string should be added in.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
146
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
147 trm: The transform to use.
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parents:
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148
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
149 s: The utf-8 string to add.
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parents:
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150
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
151 wmode: 1 for vertical mode, 0 for horizontal.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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152
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
153 bidi_level: The bidirectional level for this glyph.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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154
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
155 markup_dir: The direction of the text as specified in the markup.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
157 language: The language in use (if known, 0 otherwise)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158 (e.g. FZ_LANG_zh_Hans).
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
159
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
160 Returns the transform updated with the advance width of the
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 string.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163 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);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166 Measure the advance width of a UTF8 string should it be added to a text object.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 This uses the same layout algorithms as fz_show_string, and can be used
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169 to calculate text alignment adjustments.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 fz_matrix
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172 fz_measure_string(fz_context *ctx, fz_font *user_font, fz_matrix trm, const char *s, int wmode, int bidi_level, fz_bidi_direction markup_dir, fz_text_language language);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 Find the bounds of a given text object.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
176
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 text: The text object to find the bounds of.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
178
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179 stroke: Pointer to the stroke attributes (for stroked
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
180 text), or NULL (for filled text).
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 ctm: The matrix in use.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
184 r: pointer to storage for the bounds.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
185
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parents:
diff changeset
186 Returns a pointer to r, which is updated to contain the
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 bounding box for the text object.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
188 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189 fz_rect fz_bound_text(fz_context *ctx, const fz_text *text, const fz_stroke_state *stroke, fz_matrix ctm);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
192 Convert ISO 639 (639-{1,2,3,5}) language specification
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
193 strings losslessly to a 15 bit fz_text_language code.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
194
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
195 No validation is carried out. Obviously invalid (out
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
196 of spec) codes will be mapped to FZ_LANG_UNSET, but
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
197 well-formed (but undefined) codes will be blithely
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198 accepted.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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199 */
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parents:
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200 fz_text_language fz_text_language_from_string(const char *str);
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201
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parents:
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202 /**
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203 Recover ISO 639 (639-{1,2,3,5}) language specification
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parents:
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204 strings losslessly from a 15 bit fz_text_language code.
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parents:
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205
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parents:
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206 No validation is carried out. See note above.
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parents:
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207 */
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parents:
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208 char *fz_string_from_text_language(char str[8], fz_text_language lang);
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parents:
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209
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parents:
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210 #endif