Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-fallback-shape.cc @ 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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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 /*
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2 * Copyright © 2011 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 #include "hb-shaper-impl.hh"
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29 #ifndef HB_NO_FALLBACK_SHAPE
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31 /*
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32 * shaper face data
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33 */
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35 struct hb_fallback_face_data_t {};
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37 hb_fallback_face_data_t *
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38 _hb_fallback_shaper_face_data_create (hb_face_t *face HB_UNUSED)
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39 {
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40 return (hb_fallback_face_data_t *) HB_SHAPER_DATA_SUCCEEDED;
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41 }
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42
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43 void
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44 _hb_fallback_shaper_face_data_destroy (hb_fallback_face_data_t *data HB_UNUSED)
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45 {
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46 }
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47
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49 /*
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50 * shaper font data
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51 */
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53 struct hb_fallback_font_data_t {};
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54
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55 hb_fallback_font_data_t *
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56 _hb_fallback_shaper_font_data_create (hb_font_t *font HB_UNUSED)
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57 {
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58 return (hb_fallback_font_data_t *) HB_SHAPER_DATA_SUCCEEDED;
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59 }
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61 void
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62 _hb_fallback_shaper_font_data_destroy (hb_fallback_font_data_t *data HB_UNUSED)
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63 {
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64 }
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66
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67 /*
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68 * shaper
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69 */
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71 hb_bool_t
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72 _hb_fallback_shape (hb_shape_plan_t *shape_plan HB_UNUSED,
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73 hb_font_t *font,
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74 hb_buffer_t *buffer,
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75 const hb_feature_t *features HB_UNUSED,
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76 unsigned int num_features HB_UNUSED)
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77 {
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78 hb_codepoint_t space;
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79 bool has_space = (bool) font->get_nominal_glyph (' ', &space);
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81 buffer->clear_positions ();
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83 hb_direction_t direction = buffer->props.direction;
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84 hb_unicode_funcs_t *unicode = buffer->unicode;
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85 unsigned int count = buffer->len;
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86 hb_glyph_info_t *info = buffer->info;
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87 hb_glyph_position_t *pos = buffer->pos;
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88 for (unsigned int i = 0; i < count; i++)
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89 {
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90 if (has_space && unicode->is_default_ignorable (info[i].codepoint)) {
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91 info[i].codepoint = space;
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92 pos[i].x_advance = 0;
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93 pos[i].y_advance = 0;
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94 continue;
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95 }
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96 (void) font->get_nominal_glyph (info[i].codepoint, &info[i].codepoint);
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97 font->get_glyph_advance_for_direction (info[i].codepoint,
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98 direction,
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99 &pos[i].x_advance,
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100 &pos[i].y_advance);
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101 font->subtract_glyph_origin_for_direction (info[i].codepoint,
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102 direction,
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103 &pos[i].x_offset,
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parents:
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104 &pos[i].y_offset);
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parents:
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105 }
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106
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107 if (HB_DIRECTION_IS_BACKWARD (direction))
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108 hb_buffer_reverse (buffer);
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109
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110 buffer->clear_glyph_flags ();
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111
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112 return true;
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113 }
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114
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115 #endif