harfbuzz/test/api/test-ot-ligature-carets.c

250 lines
7.3 KiB
C

/*
* Copyright © 2018 Ebrahim Byagowi
*
* 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.
*
*/
#include "hb-test.h"
#include <hb-ot.h>
static void
test_ot_layout_get_ligature_carets_aat_lcar (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/lcar.ttf");
hb_font_t *font = hb_font_create (face);
hb_font_set_scale (font, hb_face_get_upem (face) * 2, hb_face_get_upem (face) * 4);
hb_position_t caret_array[16];
/* a normal call */
{
unsigned caret_count = 16;
g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
98, 0, &caret_count,
caret_array));
g_assert_cmpuint (2, ==, caret_count);
g_assert_cmpuint (1130, ==, caret_array[0]);
g_assert_cmpuint (2344, ==, caret_array[1]);
}
/* RTL, maybe needs to be tweaked however */
{
unsigned caret_count = 16;
g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_RTL,
98, 0, &caret_count,
caret_array));
g_assert_cmpuint (2, ==, caret_count);
g_assert_cmpuint (1130, ==, caret_array[0]);
g_assert_cmpuint (2344, ==, caret_array[1]);
}
/* bottom to top call, bigger caret positions as the specified scaling */
{
unsigned caret_count = 16;
g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_BTT,
98, 0, &caret_count,
caret_array));
g_assert_cmpuint (2, ==, caret_count);
g_assert_cmpuint (2260, ==, caret_array[0]);
g_assert_cmpuint (4688, ==, caret_array[1]);
}
/* the same glyph as above but with offset */
{
caret_array[1] = 123;
unsigned caret_count = 16;
g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_BTT,
98, 1, &caret_count,
caret_array));
g_assert_cmpuint (1, ==, caret_count);
g_assert_cmpuint (4688, ==, caret_array[0]);
g_assert_cmpuint (123, ==, caret_array[1]);
}
/* empty carets */
{
unsigned caret_count = 16;
g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
97, 0, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
}
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_ot_layout_get_ligature_carets_ot_gsub (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/NotoNastaliqUrdu-Regular.ttf");
hb_font_t *font = hb_font_create (face);
hb_font_set_scale (font, hb_face_get_upem (face) * 2, hb_face_get_upem (face) * 4);
hb_position_t caret_array[16];
/* call with no result */
{
unsigned caret_count = 16;
g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
188, 0, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
}
/* call with no result and some offset */
{
unsigned caret_count = 16;
g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
188, 10, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
}
/* a glyph with 3 ligature carets */
{
unsigned caret_count = 16;
g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1020, 0, &caret_count,
caret_array));
g_assert_cmpuint (3, ==, caret_count);
g_assert_cmpuint (2718, ==, caret_array[0]);
g_assert_cmpuint (5438, ==, caret_array[1]);
g_assert_cmpuint (8156, ==, caret_array[2]);
}
/* the same glyph as above but with offset */
{
caret_array[2] = 123;
unsigned caret_count = 16;
g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1020, 1, &caret_count,
caret_array));
g_assert_cmpuint (2, ==, caret_count);
g_assert_cmpuint (5438, ==, caret_array[0]);
g_assert_cmpuint (8156, ==, caret_array[1]);
g_assert_cmpuint (123, ==, caret_array[2]);
}
/* the same glyph as above but with another offset */
{
unsigned caret_count = 16;
g_assert_cmpuint (3, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1020, 2, &caret_count,
caret_array));
g_assert_cmpuint (1, ==, caret_count);
g_assert_cmpuint (8156, ==, caret_array[0]);
}
/* call with no result */
{
unsigned caret_count = 16;
g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1021, 0, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
}
/* a glyph with 1 ligature caret */
{
unsigned caret_count = 16;
g_assert_cmpuint (1, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1022, 0, &caret_count,
caret_array));
g_assert_cmpuint (1, ==, caret_count);
g_assert_cmpuint (3530, ==, caret_array[0]);
}
/* the same glyph as above but with offset */
{
unsigned caret_count = 16;
g_assert_cmpuint (1, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1022, 1, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
}
/* a glyph with 2 ligature carets */
{
unsigned caret_count = 16;
g_assert_cmpuint (2, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR,
1023, 0, &caret_count,
caret_array));
g_assert_cmpuint (2, ==, caret_count);
g_assert_cmpuint (2352, ==, caret_array[0]);
g_assert_cmpuint (4706, ==, caret_array[1]);
}
hb_font_destroy (font);
hb_face_destroy (face);
}
static void
test_ot_layout_get_ligature_carets_empty (void)
{
hb_face_t *face = hb_face_get_empty ();
hb_font_t *font = hb_font_create (face);
hb_font_set_scale (font, hb_face_get_upem (face) * 2, hb_face_get_upem (face) * 4);
hb_position_t caret_array[3];
unsigned int caret_count = 3;
g_assert_cmpuint (0, ==, hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_RTL,
1024, 0, &caret_count,
caret_array));
g_assert_cmpuint (0, ==, caret_count);
hb_font_destroy (font);
hb_face_destroy (face);
}
int
main (int argc, char **argv)
{
g_test_init (&argc, &argv, NULL);
hb_test_add (test_ot_layout_get_ligature_carets_aat_lcar);
hb_test_add (test_ot_layout_get_ligature_carets_ot_gsub);
hb_test_add (test_ot_layout_get_ligature_carets_empty);
return hb_test_run ();
}