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annotate mupdf-source/thirdparty/harfbuzz/src/hb-ot-shape.hh @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright © 2010 Google, Inc.
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3 *
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4 * This is part of HarfBuzz, a text shaping library.
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5 *
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6 * Permission is hereby granted, without written agreement and without
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7 * license or royalty fees, to use, copy, modify, and distribute this
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8 * software and its documentation for any purpose, provided that the
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9 * above copyright notice and the following two paragraphs appear in
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10 * all copies of this software.
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11 *
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12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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16 * DAMAGE.
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17 *
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18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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23 *
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24 * Google Author(s): Behdad Esfahbod
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25 */
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27 #ifndef HB_OT_SHAPE_HH
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28 #define HB_OT_SHAPE_HH
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30 #include "hb.hh"
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32 #include "hb-ot-map.hh"
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33 #include "hb-aat-map.hh"
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36 struct hb_ot_shape_plan_key_t
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37 {
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38 unsigned int variations_index[2];
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39
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40 void init (hb_face_t *face,
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41 const int *coords,
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42 unsigned num_coords)
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43 {
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44 for (unsigned int table_index = 0; table_index < 2; table_index++)
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45 hb_ot_layout_table_find_feature_variations (face,
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46 table_tags[table_index],
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47 coords,
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48 num_coords,
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49 &variations_index[table_index]);
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50 }
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51
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52 bool equal (const hb_ot_shape_plan_key_t *other)
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53 {
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54 return 0 == hb_memcmp (this, other, sizeof (*this));
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55 }
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56 };
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57
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58
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59 struct hb_shape_plan_key_t;
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60
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61 struct hb_ot_shape_plan_t
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62 {
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63 ~hb_ot_shape_plan_t () { fini (); }
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64
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65 hb_segment_properties_t props;
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66 const struct hb_ot_shaper_t *shaper;
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67 hb_ot_map_t map;
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68 hb_aat_map_t aat_map;
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69 const void *data;
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70 #ifndef HB_NO_OT_SHAPE_FRACTIONS
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71 hb_mask_t frac_mask, numr_mask, dnom_mask;
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72 #else
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73 static constexpr hb_mask_t frac_mask = 0;
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74 static constexpr hb_mask_t numr_mask = 0;
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75 static constexpr hb_mask_t dnom_mask = 0;
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76 #endif
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77 hb_mask_t rtlm_mask;
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78 #ifndef HB_NO_OT_KERN
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79 hb_mask_t kern_mask;
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80 #else
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81 static constexpr hb_mask_t kern_mask = 0;
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82 #endif
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83 #ifndef HB_NO_AAT_SHAPE
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84 hb_mask_t trak_mask;
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85 #else
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86 static constexpr hb_mask_t trak_mask = 0;
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87 #endif
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88
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89 #ifndef HB_NO_OT_KERN
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90 bool requested_kerning : 1;
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91 #else
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92 static constexpr bool requested_kerning = false;
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93 #endif
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94 #ifndef HB_NO_AAT_SHAPE
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95 bool requested_tracking : 1;
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96 #else
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97 static constexpr bool requested_tracking = false;
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98 #endif
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99 #ifndef HB_NO_OT_SHAPE_FRACTIONS
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100 bool has_frac : 1;
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101 #else
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102 static constexpr bool has_frac = false;
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103 #endif
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104 bool has_vert : 1;
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105 bool has_gpos_mark : 1;
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106 bool zero_marks : 1;
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107 bool fallback_glyph_classes : 1;
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108 bool fallback_mark_positioning : 1;
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109 bool adjust_mark_positioning_when_zeroing : 1;
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110
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111 bool apply_gpos : 1;
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112 #ifndef HB_NO_OT_KERN
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113 bool apply_kern : 1;
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114 #else
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115 static constexpr bool apply_kern = false;
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116 #endif
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117 bool apply_fallback_kern : 1;
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118 #ifndef HB_NO_AAT_SHAPE
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119 bool apply_kerx : 1;
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120 bool apply_morx : 1;
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121 bool apply_trak : 1;
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122 #else
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123 static constexpr bool apply_kerx = false;
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124 static constexpr bool apply_morx = false;
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125 static constexpr bool apply_trak = false;
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126 #endif
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127
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128 void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
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129 {
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130 unsigned int table_index;
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131 switch (table_tag) {
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132 case HB_OT_TAG_GSUB: table_index = 0; break;
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133 case HB_OT_TAG_GPOS: table_index = 1; break;
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134 default: return;
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135 }
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136 map.collect_lookups (table_index, lookups);
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137 }
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138
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139 HB_INTERNAL bool init0 (hb_face_t *face,
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140 const hb_shape_plan_key_t *key);
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141 HB_INTERNAL void fini ();
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142
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143 HB_INTERNAL void substitute (hb_font_t *font, hb_buffer_t *buffer) const;
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144 HB_INTERNAL void position (hb_font_t *font, hb_buffer_t *buffer) const;
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145 };
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146
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147 struct hb_shape_plan_t;
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148
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149 struct hb_ot_shape_planner_t
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150 {
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151 /* In the order that they are filled in. */
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152 hb_face_t *face;
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153 hb_segment_properties_t props;
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154 hb_ot_map_builder_t map;
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155 hb_aat_map_builder_t aat_map;
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156 #ifndef HB_NO_AAT_SHAPE
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157 bool apply_morx : 1;
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158 #else
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159 static constexpr bool apply_morx = false;
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160 #endif
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161 bool script_zero_marks : 1;
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162 bool script_fallback_mark_positioning : 1;
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163 const struct hb_ot_shaper_t *shaper;
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164
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165 HB_INTERNAL hb_ot_shape_planner_t (hb_face_t *face,
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166 const hb_segment_properties_t &props);
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167
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168 HB_INTERNAL void compile (hb_ot_shape_plan_t &plan,
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169 const hb_ot_shape_plan_key_t &key);
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170 };
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171
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172
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173 #endif /* HB_OT_SHAPE_HH */