Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-ot-head-table.hh @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /*
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2 * Copyright © 2010 Red Hat, Inc.
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3 * Copyright © 2012 Google, Inc.
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4 *
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5 * This is part of HarfBuzz, a text shaping library.
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6 *
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7 * Permission is hereby granted, without written agreement and without
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8 * license or royalty fees, to use, copy, modify, and distribute this
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9 * software and its documentation for any purpose, provided that the
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10 * above copyright notice and the following two paragraphs appear in
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11 * all copies of this software.
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12 *
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13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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17 * DAMAGE.
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18 *
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19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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24 *
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25 * Red Hat Author(s): Behdad Esfahbod
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26 * Google Author(s): Behdad Esfahbod
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27 */
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29 #ifndef HB_OT_HEAD_TABLE_HH
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30 #define HB_OT_HEAD_TABLE_HH
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32 #include "hb-open-type.hh"
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33
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34 /*
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35 * head -- Font Header
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36 * https://docs.microsoft.com/en-us/typography/opentype/spec/head
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37 */
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38 #define HB_OT_TAG_head HB_TAG('h','e','a','d')
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41 namespace OT {
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42
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43
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44 struct head
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45 {
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46 friend struct OpenTypeOffsetTable;
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47
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48 static constexpr hb_tag_t tableTag = HB_OT_TAG_head;
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49
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50 unsigned int get_upem () const
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51 {
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52 unsigned int upem = unitsPerEm;
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53 /* If no valid head table found, assume 1000, which matches typical Type1 usage. */
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54 return 16 <= upem && upem <= 16384 ? upem : 1000;
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55 }
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56
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57 bool serialize (hb_serialize_context_t *c) const
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58 {
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59 TRACE_SERIALIZE (this);
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60 return_trace ((bool) c->embed (this));
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61 }
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62
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63 bool subset (hb_subset_context_t *c) const
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64 {
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65 TRACE_SUBSET (this);
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66 return_trace (serialize (c->serializer));
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67 }
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68
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69 enum mac_style_flag_t {
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70 BOLD = 1u<<0,
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71 ITALIC = 1u<<1,
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72 UNDERLINE = 1u<<2,
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73 OUTLINE = 1u<<3,
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74 SHADOW = 1u<<4,
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75 CONDENSED = 1u<<5,
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76 EXPANDED = 1u<<6,
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77 };
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78
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79 bool is_bold () const { return macStyle & BOLD; }
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80 bool is_italic () const { return macStyle & ITALIC; }
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81 bool is_condensed () const { return macStyle & CONDENSED; }
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82 bool is_expanded () const { return macStyle & EXPANDED; }
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83
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84 bool sanitize (hb_sanitize_context_t *c) const
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85 {
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86 TRACE_SANITIZE (this);
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87 return_trace (c->check_struct (this) &&
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88 version.major == 1 &&
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89 magicNumber == 0x5F0F3CF5u);
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90 }
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91
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92 protected:
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93 FixedVersion<>version; /* Version of the head table--currently
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94 * 0x00010000u for version 1.0. */
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95 FixedVersion<>fontRevision; /* Set by font manufacturer. */
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96 HBUINT32 checkSumAdjustment; /* To compute: set it to 0, sum the
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97 * entire font as HBUINT32, then store
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98 * 0xB1B0AFBAu - sum. */
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99 HBUINT32 magicNumber; /* Set to 0x5F0F3CF5u. */
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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100 HBUINT16 flags; /* Bit 0: Baseline for font at y=0;
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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101 * Bit 1: Left sidebearing point at x=0;
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102 * Bit 2: Instructions may depend on point size;
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103 * Bit 3: Force ppem to integer values for all
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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104 * internal scaler math; may use fractional
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parents:
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105 * ppem sizes if this bit is clear;
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parents:
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106 * Bit 4: Instructions may alter advance width
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107 * (the advance widths might not scale linearly);
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108 * Bits 5-10: These should be set according to
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109 * Apple's specification. However, they are not
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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110 * implemented in OpenType.
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111 * Bit 5: This bit should be set in fonts that are
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parents:
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112 * intended to e laid out vertically, and in
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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113 * which the glyphs have been drawn such that an
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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114 * x-coordinate of 0 corresponds to the desired
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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115 * vertical baseline.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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116 * Bit 6: This bit must be set to zero.
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117 * Bit 7: This bit should be set if the font
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Franz Glasner <fzglas.hg@dom66.de>
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118 * requires layout for correct linguistic
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119 * rendering (e.g. Arabic fonts).
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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120 * Bit 8: This bit should be set for a GX font
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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121 * which has one or more metamorphosis effects
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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122 * designated as happening by default.
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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123 * Bit 9: This bit should be set if the font
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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124 * contains any strong right-to-left glyphs.
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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125 * Bit 10: This bit should be set if the font
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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126 * contains Indic-style rearrangement effects.
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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127 * Bit 11: Font data is 'lossless,' as a result
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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128 * of having been compressed and decompressed
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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129 * with the Agfa MicroType Express engine.
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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130 * Bit 12: Font converted (produce compatible metrics)
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parents:
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131 * Bit 13: Font optimized for ClearType™.
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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132 * Note, fonts that rely on embedded bitmaps (EBDT)
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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133 * for rendering should not be considered optimized
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parents:
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134 * for ClearType, and therefore should keep this bit
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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135 * cleared.
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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136 * Bit 14: Last Resort font. If set, indicates that
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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137 * the glyphs encoded in the cmap subtables are simply
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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138 * generic symbolic representations of code point
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 * ranges and don’t truly represent support for those
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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140 * code points. If unset, indicates that the glyphs
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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141 * encoded in the cmap subtables represent proper
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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142 * support for those code points.
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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143 * Bit 15: Reserved, set to 0. */
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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144 HBUINT16 unitsPerEm; /* Valid range is from 16 to 16384. This value
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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145 * should be a power of 2 for fonts that have
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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146 * TrueType outlines. */
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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147 LONGDATETIME created; /* Number of seconds since 12:00 midnight,
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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148 January 1, 1904. 64-bit integer */
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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149 LONGDATETIME modified; /* Number of seconds since 12:00 midnight,
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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150 January 1, 1904. 64-bit integer */
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
151 HBINT16 xMin; /* For all glyph bounding boxes. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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152 HBINT16 yMin; /* For all glyph bounding boxes. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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153 HBINT16 xMax; /* For all glyph bounding boxes. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
154 HBINT16 yMax; /* For all glyph bounding boxes. */
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
155 HBUINT16 macStyle; /* Bit 0: Bold (if set to 1);
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
156 * Bit 1: Italic (if set to 1)
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
157 * Bit 2: Underline (if set to 1)
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
158 * Bit 3: Outline (if set to 1)
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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159 * Bit 4: Shadow (if set to 1)
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
160 * Bit 5: Condensed (if set to 1)
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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161 * Bit 6: Extended (if set to 1)
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 * Bits 7-15: Reserved (set to 0). */
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
163 HBUINT16 lowestRecPPEM; /* Smallest readable size in pixels. */
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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164 HBINT16 fontDirectionHint; /* Deprecated (Set to 2).
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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165 * 0: Fully mixed directional glyphs;
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 * 1: Only strongly left to right;
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 * 2: Like 1 but also contains neutrals;
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
168 * -1: Only strongly right to left;
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 * -2: Like -1 but also contains neutrals. */
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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170 public:
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
171 HBUINT16 indexToLocFormat; /* 0 for short offsets, 1 for long. */
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 HBUINT16 glyphDataFormat; /* 0 for current format. */
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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173
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
174 DEFINE_SIZE_STATIC (54);
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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175 };
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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176
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parents:
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177
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 } /* namespace OT */
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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179
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parents:
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180
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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181 #endif /* HB_OT_HEAD_TABLE_HH */