100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/*
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* Copyright © 2018 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Roderick Sheeter
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*/
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#include <stdbool.h>
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#include "hb-test.h"
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#include "hb-subset-test.h"
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/* Unit tests for hmtx subsetting */
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static void check_num_vmetrics(hb_face_t *face, uint16_t expected_num_vmetrics)
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{
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hb_blob_t *vhea_blob = hb_face_reference_table (face, HB_TAG ('v','h','e','a'));
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hb_blob_t *vmtx_blob = hb_face_reference_table (face, HB_TAG ('v','m','t','x'));
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unsigned int vhea_len;
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uint8_t *raw_vhea = (uint8_t *) hb_blob_get_data(vhea_blob, &vhea_len);
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uint16_t num_hmetrics = (raw_vhea[vhea_len - 2] << 8) + raw_vhea[vhea_len - 1];
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g_assert_cmpuint(expected_num_hmetrics, ==, num_hmetrics);
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hb_blob_destroy (vhea_blob);
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hb_blob_destroy (vmtx_blob);
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}
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static void
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test_subset_vmtx_simple_subset (void)
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{
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hb_face_t *face_full = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
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hb_face_t *face_subset = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E.ttf");
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hb_set_t *codepoints = hb_set_create ();
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hb_set_add (codepoints, 0x660E);
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hb_face_t *face_full_subset = hb_subset_test_create_subset (face_full, hb_subset_test_create_input (codepoints));
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hb_set_destroy (codepoints);
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check_num_vmetrics(face_full_subset, 1); /* nothing has same width */
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hb_subset_test_check (face_subset, face_full_subset, HB_TAG ('v','m','t','x'));
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hb_face_destroy (face_full_subset);
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hb_face_destroy (face_full);
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hb_face_destroy (face_subset);
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}
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static void
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test_subset_vmtx_noop (void)
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{
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hb_face_t *face_full = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
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hb_set_t *codepoints = hb_set_create();
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hb_set_add (codepoints, 0x660E);
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hb_set_add (codepoints, 0x6975);
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hb_set_add (codepoints, 0x73E0);
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hb_set_add (codepoints, 0x5EA6);
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hb_set_add (codepoints, 0x8F38);
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hb_set_add (codepoints, 0x6E05);
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hb_face_t *face_full_subset = hb_subset_test_create_subset (face_full, hb_subset_test_create_input (codepoints));
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hb_set_destroy (codepoints);
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check_num_vmetrics(face_full_subset, 1); /* all have the same width */
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hb_subset_test_check (face_full, face_full_subset, HB_TAG ('v','m','t','x'));
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hb_face_destroy (face_full_subset);
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hb_face_destroy (face_full);
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}
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int
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main (int argc, char **argv)
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{
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hb_test_init (&argc, &argv);
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hb_test_add (test_subset_vmtx_simple_subset);
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hb_test_add (test_subset_vmtx_noop);
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return hb_test_run();
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}
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