kc3-lang/harfbuzz/test/api/test-extents.c

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• Hash : 4d1f6e04
  Author :
  Date : 2024-10-06T18:25:24
  

  [COLR] Enable COLRv0 support in get_extents()
  
  paint_glyph() supports COLRv0 but this code is never reached because of
  the early return if version is not 1. This early return seems to be from
  before COLRv0 extents were supported.
  

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• test/api/test-extents.c

• /*
   * Copyright © 2023 Red Hat, Inc.
   *
   *  This is part of HarfBuzz, a text shaping library.
   *
   * Permission is hereby granted, without written agreement and without
   * license or royalty fees, to use, copy, modify, and distribute this
   * software and its documentation for any purpose, provided that the
   * above copyright notice and the following two paragraphs appear in
   * all copies of this software.
   *
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   *
   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   *
   * Author(s): Matthias Clasen
   */
  
  #include "hb-test.h"
  
  
  static void
  test_glyph_extents_color_v1 (void)
  {
    hb_face_t *face;
    hb_font_t *font;
    hb_glyph_extents_t extents;
    hb_bool_t ret;
  
    /* This font contains a COLRv1 glyph with a ClipBox,
     * and various components without. The main thing
     * we test here is that glyphs with no paint return
     * 0,0,0,0 and not meaningless numbers.
     */
  
    face = hb_test_open_font_file ("fonts/adwaita.ttf");
    font = hb_font_create (face);
  
    ret = hb_font_get_glyph_extents (font, 0, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing == 0 &&
                   extents.y_bearing == 0 &&
                   extents.width     == 0 &&
                   extents.height    == 0);
  
    ret = hb_font_get_glyph_extents (font, 1, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing == 0 &&
                   extents.y_bearing == 0 &&
                   extents.width     == 0 &&
                   extents.height    == 0);
  
    ret = hb_font_get_glyph_extents (font, 2, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing ==   180 &&
                   extents.y_bearing ==   960 &&
                   extents.width     ==  1060 &&
                   extents.height    == -1220);
  
    ret = hb_font_get_glyph_extents (font, 3, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing ==   188 &&
                   extents.y_bearing ==   950 &&
                   extents.width     ==   900 &&
                   extents.height    == -1200);
  
    ret = hb_font_get_glyph_extents (font, 4, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing ==   413 &&
                   extents.y_bearing ==    50 &&
                   extents.width     ==   150 &&
                   extents.height    ==   -75);
  
    ret = hb_font_get_glyph_extents (font, 5, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing ==   638 &&
                   extents.y_bearing ==   350 &&
                   extents.width     ==   600 &&
                   extents.height    ==  -600);
  
    ret = hb_font_get_glyph_extents (font, 1000, &extents);
    g_assert_false (ret);
  
    hb_font_destroy (font);
    hb_face_destroy (face);
  }
  
  
  static void
  test_glyph_extents_color_v0 (void)
  {
    hb_face_t *face;
    hb_font_t *font;
    hb_glyph_extents_t extents;
    hb_bool_t ret;
  
    /*
     * This font contains a COLRv0 glyph with an empty default glyph
     * to make sure we are getting extents from the COLRv0 layers.
     */
  
    face = hb_test_open_font_file ("fonts/COLRv0.extents.ttf");
    font = hb_font_create (face);
  
    ret = hb_font_get_glyph_extents (font, 13, &extents);
    g_assert_true (ret);
    g_assert_true (extents.x_bearing == 192 &&
                   extents.y_bearing == 573 &&
                   extents.width     == 731 &&
                   extents.height    == -758);
  
    hb_font_destroy (font);
    hb_face_destroy (face);
  }
  
  int
  main (int argc, char **argv)
  {
    hb_test_init (&argc, &argv);
  
    hb_test_add (test_glyph_extents_color_v1);
    hb_test_add (test_glyph_extents_color_v0);
  
    return hb_test_run();
  }
  

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