Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-ot-vorg-table.hh @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
children
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2
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1 /*
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2 * Copyright © 2018 Adobe 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 * Adobe Author(s): Michiharu Ariza
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25 */
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27 #ifndef HB_OT_VORG_TABLE_HH
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28 #define HB_OT_VORG_TABLE_HH
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30 #include "hb-open-type.hh"
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32 /*
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33 * VORG -- Vertical Origin Table
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34 * https://docs.microsoft.com/en-us/typography/opentype/spec/vorg
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35 */
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36 #define HB_OT_TAG_VORG HB_TAG('V','O','R','G')
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38 namespace OT {
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39
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40 struct VertOriginMetric
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41 {
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42 int cmp (hb_codepoint_t g) const { return glyph.cmp (g); }
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43
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44 bool sanitize (hb_sanitize_context_t *c) const
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45 {
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46 TRACE_SANITIZE (this);
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47 return_trace (c->check_struct (this));
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48 }
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49
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50 public:
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51 HBGlyphID16 glyph;
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52 FWORD vertOriginY;
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53
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54 public:
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55 DEFINE_SIZE_STATIC (4);
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56 };
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57
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58 struct VORG
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59 {
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60 static constexpr hb_tag_t tableTag = HB_OT_TAG_VORG;
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61
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62 bool has_data () const { return version.to_int (); }
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63
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64 int get_y_origin (hb_codepoint_t glyph) const
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65 {
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66 unsigned int i;
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67 if (!vertYOrigins.bfind (glyph, &i))
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68 return defaultVertOriginY;
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69 return vertYOrigins[i].vertOriginY;
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70 }
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71
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72 template <typename Iterator,
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73 hb_requires (hb_is_iterator (Iterator))>
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74 void serialize (hb_serialize_context_t *c,
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75 Iterator it,
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76 FWORD defaultVertOriginY)
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77 {
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79 if (unlikely (!c->extend_min ((*this)))) return;
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80
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81 this->version.major = 1;
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82 this->version.minor = 0;
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83
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84 this->defaultVertOriginY = defaultVertOriginY;
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85 this->vertYOrigins.len = it.len ();
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86
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87 c->copy_all (it);
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88 }
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90 bool subset (hb_subset_context_t *c) const
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91 {
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92 TRACE_SUBSET (this);
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93 VORG *vorg_prime = c->serializer->start_embed<VORG> ();
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94 if (unlikely (!c->serializer->check_success (vorg_prime))) return_trace (false);
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96 auto it =
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97 + vertYOrigins.as_array ()
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98 | hb_filter (c->plan->glyphset (), &VertOriginMetric::glyph)
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99 | hb_map ([&] (const VertOriginMetric& _)
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100 {
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101 hb_codepoint_t new_glyph = HB_SET_VALUE_INVALID;
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102 c->plan->new_gid_for_old_gid (_.glyph, &new_glyph);
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103
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104 VertOriginMetric metric;
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105 metric.glyph = new_glyph;
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106 metric.vertOriginY = _.vertOriginY;
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107 return metric;
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108 })
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109 ;
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110
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111 /* serialize the new table */
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112 vorg_prime->serialize (c->serializer, it, defaultVertOriginY);
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113 return_trace (true);
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114 }
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115
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116 bool sanitize (hb_sanitize_context_t *c) const
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117 {
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118 TRACE_SANITIZE (this);
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119 return_trace (c->check_struct (this) &&
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120 version.major == 1 &&
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121 vertYOrigins.sanitize (c));
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122 }
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123
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124 protected:
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125 FixedVersion<>version; /* Version of VORG table. Set to 0x00010000u. */
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126 FWORD defaultVertOriginY;
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127 /* The default vertical origin. */
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128 SortedArray16Of<VertOriginMetric>
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129 vertYOrigins; /* The array of vertical origins. */
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130
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131 public:
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132 DEFINE_SIZE_ARRAY(8, vertYOrigins);
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133 };
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134 } /* namespace OT */
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135
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136 #endif /* HB_OT_VORG_TABLE_HH */