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harfbuzz/test/api/test-ot-metrics-tt-var.c
Ebrahim Byagowi 1f5a54c768 [gvar] fix infinite loop introduced by 11f3fca 
The attempt on removing end_points had made the code unreadable
and has intrdouced infinite, fixed by making the code clear what
it tries to achieve.
2020-02-24 14:30:07 +03:30

269 lines
8.0 KiB
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/*
* Copyright © 2019 Adobe 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.
*
* Adobe Author(s): Michiharu Ariza
*/
#include "hb-test.h"
#include <hb-ot.h>
/* Unit tests for glyph advance widths and extents of TrueType variable fonts */
static void
test_extents_tt_var (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
hb_glyph_extents_t extents;
hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 10);
g_assert_cmpint (extents.y_bearing, ==, 846);
g_assert_cmpint (extents.width, ==, 500);
g_assert_cmpint (extents.height, ==, -846);
float coords[1] = { 500.0f };
hb_font_set_var_coords_design (font, coords, 1);
result = hb_font_get_glyph_extents (font, 2, &extents);
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 0);
g_assert_cmpint (extents.y_bearing, ==, 874);
g_assert_cmpint (extents.width, ==, 551);
g_assert_cmpint (extents.height, ==, -874);
hb_font_destroy (font);
}
static void
test_advance_tt_var_nohvar (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
hb_position_t x, y;
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);
g_assert_cmpint (x, ==, 520);
g_assert_cmpint (y, ==, 0);
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
g_assert_cmpint (x, ==, 0);
g_assert_cmpint (y, ==, -1000);
float coords[1] = { 500.0f };
hb_font_set_var_coords_design (font, coords, 1);
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);
g_assert_cmpint (x, ==, 551);
g_assert_cmpint (y, ==, 0);
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
g_assert_cmpint (x, ==, 0);
g_assert_cmpint (y, ==, -1000);
hb_font_destroy (font);
}
static void
test_advance_tt_var_hvarvvar (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSerifVariable-Roman-VVAR.abc.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
hb_position_t x, y;
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);
g_assert_cmpint (x, ==, 508);
g_assert_cmpint (y, ==, 0);
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);
g_assert_cmpint (x, ==, 0);
g_assert_cmpint (y, ==, -1000);
float coords[1] = { 700.0f };
hb_font_set_var_coords_design (font, coords, 1);
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);
g_assert_cmpint (x, ==, 531);
g_assert_cmpint (y, ==, 0);
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);
g_assert_cmpint (x, ==, 0);
g_assert_cmpint (y, ==, -1012);
hb_font_destroy (font);
}
static void
test_advance_tt_var_anchor (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.anchor.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
hb_glyph_extents_t extents;
hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 56);
g_assert_cmpint (extents.y_bearing, ==, 672);
g_assert_cmpint (extents.width, ==, 556);
g_assert_cmpint (extents.height, ==, -684);
float coords[1] = { 500.0f };
hb_font_set_var_coords_design (font, coords, 1);
result = hb_font_get_glyph_extents (font, 2, &extents);
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 50);
g_assert_cmpint (extents.y_bearing, ==, 667);
g_assert_cmpint (extents.width, ==, 593);
g_assert_cmpint (extents.height, ==, -679);
hb_font_destroy (font);
}
static void
test_extents_tt_var_comp (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
hb_glyph_extents_t extents;
float coords[1] = { 800.0f };
hb_font_set_var_coords_design (font, coords, 1);
hb_bool_t result;
result = hb_font_get_glyph_extents (font, 2, &extents); /* Ccedilla, cedilla y-scaled by 0.8, with unscaled component offset */
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 19);
g_assert_cmpint (extents.y_bearing, ==, 663);
g_assert_cmpint (extents.width, ==, 519);
g_assert_cmpint (extents.height, ==, -895);
result = hb_font_get_glyph_extents (font, 3, &extents); /* Cacute, acute y-scaled by 0.8, with unscaled component offset (default) */
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 19);
g_assert_cmpint (extents.y_bearing, ==, 909);
g_assert_cmpint (extents.width, ==, 519);
g_assert_cmpint (extents.height, ==, -921);
result = hb_font_get_glyph_extents (font, 4, &extents); /* Ccaron, caron y-scaled by 0.8, with scaled component offset */
g_assert (result);
g_assert_cmpint (extents.x_bearing, ==, 19);
g_assert_cmpint (extents.y_bearing, ==, 866);
g_assert_cmpint (extents.width, ==, 519);
g_assert_cmpint (extents.height, ==, -878);
hb_font_destroy (font);
}
static void
test_advance_tt_var_comp_v (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
g_assert (face);
hb_font_t *font = hb_font_create (face);
hb_face_destroy (face);
g_assert (font);
hb_ot_font_set_funcs (font);
float coords[1] = { 800.0f };
hb_font_set_var_coords_design (font, coords, 1);
hb_position_t x, y;
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y); /* No VVAR; 'C' in composite Ccedilla determines metrics */
g_assert_cmpint (x, ==, 0);
g_assert_cmpint (y, ==, -991);
hb_font_get_glyph_origin_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
g_assert_cmpint (x, ==, 292);
g_assert_cmpint (y, ==, 1013);
hb_font_destroy (font);
}
static void
test_advance_tt_var_gvar_infer (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/TestGVAREight.ttf");
hb_font_t *font = hb_font_create (face);
hb_ot_font_set_funcs (font);
hb_face_destroy (face);
int coords[6] = {100};
hb_font_set_var_coords_normalized (font, coords, 6);
hb_glyph_extents_t extents = {0};
g_assert (hb_font_get_glyph_extents (font, 4, &extents));
hb_font_destroy (font);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_extents_tt_var);
hb_test_add (test_advance_tt_var_nohvar);
hb_test_add (test_advance_tt_var_hvarvvar);
hb_test_add (test_advance_tt_var_anchor);
hb_test_add (test_extents_tt_var_comp);
hb_test_add (test_advance_tt_var_comp_v);
hb_test_add (test_advance_tt_var_gvar_infer);
return hb_test_run ();
}
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