HarfBuzz text shaping engine
http://harfbuzz.github.io/
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270 lines
7.4 KiB
270 lines
7.4 KiB
/* |
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* Copyright © 2024 Behdad Esfahbod |
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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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#include "hb-test.h" |
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#include <math.h> |
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#include <hb.h> |
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typedef struct draw_data_t |
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{ |
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unsigned move_to_count; |
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unsigned line_to_count; |
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unsigned quad_to_count; |
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unsigned cubic_to_count; |
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unsigned close_path_count; |
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} draw_data_t; |
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/* Our modified itoa, why not using libc's? it is going to be used |
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in harfbuzzjs where libc isn't available */ |
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static void _hb_reverse (char *buf, unsigned int len) |
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{ |
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unsigned start = 0, end = len - 1; |
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while (start < end) |
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{ |
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char c = buf[end]; |
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buf[end] = buf[start]; |
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buf[start] = c; |
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start++; end--; |
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} |
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} |
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static unsigned _hb_itoa (float fnum, char *buf) |
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{ |
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int32_t num = (int32_t) floorf (fnum + .5f); |
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unsigned int i = 0; |
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hb_bool_t is_negative = num < 0; |
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if (is_negative) num = -num; |
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do |
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{ |
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buf[i++] = '0' + num % 10; |
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num /= 10; |
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} while (num); |
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if (is_negative) buf[i++] = '-'; |
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_hb_reverse (buf, i); |
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buf[i] = '\0'; |
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return i; |
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} |
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#define ITOA_BUF_SIZE 12 // 10 digits in int32, 1 for negative sign, 1 for \0 |
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static void |
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test_itoa (void) |
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{ |
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char s[] = "12345"; |
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_hb_reverse (s, 5); |
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g_assert_cmpmem (s, 5, "54321", 5); |
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{ |
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unsigned num = 12345; |
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char buf[ITOA_BUF_SIZE]; |
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unsigned len = _hb_itoa (num, buf); |
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g_assert_cmpmem (buf, len, "12345", 5); |
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} |
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{ |
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unsigned num = 3152; |
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char buf[ITOA_BUF_SIZE]; |
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unsigned len = _hb_itoa (num, buf); |
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g_assert_cmpmem (buf, len, "3152", 4); |
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} |
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{ |
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int num = -6457; |
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char buf[ITOA_BUF_SIZE]; |
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unsigned len = _hb_itoa (num, buf); |
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g_assert_cmpmem (buf, len, "-6457", 5); |
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} |
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} |
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static void |
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move_to (HB_UNUSED hb_draw_funcs_t *dfuncs, draw_data_t *draw_data, |
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HB_UNUSED hb_draw_state_t *st, |
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HB_UNUSED float to_x, HB_UNUSED float to_y, |
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HB_UNUSED void *user_data) |
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{ |
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draw_data->move_to_count++; |
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} |
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static void |
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line_to (HB_UNUSED hb_draw_funcs_t *dfuncs, draw_data_t *draw_data, |
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HB_UNUSED hb_draw_state_t *st, |
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HB_UNUSED float to_x, HB_UNUSED float to_y, |
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HB_UNUSED void *user_data) |
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{ |
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draw_data->line_to_count++; |
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} |
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static void |
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quadratic_to (HB_UNUSED hb_draw_funcs_t *dfuncs, draw_data_t *draw_data, |
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HB_UNUSED hb_draw_state_t *st, |
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HB_UNUSED float control_x, HB_UNUSED float control_y, |
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HB_UNUSED float to_x, HB_UNUSED float to_y, |
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HB_UNUSED void *user_data) |
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{ |
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draw_data->quad_to_count++; |
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} |
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static void |
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cubic_to (HB_UNUSED hb_draw_funcs_t *dfuncs, draw_data_t *draw_data, |
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HB_UNUSED hb_draw_state_t *st, |
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HB_UNUSED float control1_x, HB_UNUSED float control1_y, |
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HB_UNUSED float control2_x, HB_UNUSED float control2_y, |
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HB_UNUSED float to_x, HB_UNUSED float to_y, |
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HB_UNUSED void *user_data) |
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{ |
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draw_data->cubic_to_count++; |
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} |
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static void |
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close_path (HB_UNUSED hb_draw_funcs_t *dfuncs, draw_data_t *draw_data, |
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HB_UNUSED hb_draw_state_t *st, |
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HB_UNUSED void *user_data) |
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{ |
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draw_data->close_path_count++; |
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} |
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static hb_draw_funcs_t *funcs; |
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#ifdef HB_EXPERIMENTAL_API |
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static void |
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test_hb_draw_varc_simple_hangul (void) |
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{ |
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hb_face_t *face = hb_test_open_font_file ("fonts/varc-ac00-ac01.ttf"); |
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hb_font_t *font = hb_font_create (face); |
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hb_face_destroy (face); |
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draw_data_t draw_data0 = {0}; |
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draw_data_t draw_data;; |
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unsigned gid = 0; |
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hb_font_get_nominal_glyph (font, 0xAC00u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 3); |
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hb_font_get_nominal_glyph (font, 0xAC01u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 4); |
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hb_variation_t var; |
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var.tag = HB_TAG ('w','g','h','t'); |
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var.value = 800; |
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hb_font_set_variations (font, &var, 1); |
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hb_font_get_nominal_glyph (font, 0xAC00u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 3); |
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hb_font_get_nominal_glyph (font, 0xAC01u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 4); |
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hb_font_destroy (font); |
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} |
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static void |
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test_hb_draw_varc_simple_hanzi (void) |
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{ |
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hb_face_t *face = hb_test_open_font_file ("fonts/varc-6868.ttf"); |
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hb_font_t *font = hb_font_create (face); |
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hb_face_destroy (face); |
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draw_data_t draw_data0 = {0}; |
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draw_data_t draw_data;; |
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unsigned gid = 0; |
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hb_font_get_nominal_glyph (font, 0x6868u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 11); |
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hb_variation_t var; |
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var.tag = HB_TAG ('w','g','h','t'); |
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var.value = 800; |
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hb_font_set_variations (font, &var, 1); |
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hb_font_get_nominal_glyph (font, 0x6868u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 11); |
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hb_font_destroy (font); |
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} |
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static void |
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test_hb_draw_varc_conditional (void) |
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{ |
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hb_face_t *face = hb_test_open_font_file ("fonts/varc-ac01-conditional.ttf"); |
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hb_font_t *font = hb_font_create (face); |
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hb_face_destroy (face); |
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draw_data_t draw_data0 = {0}; |
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draw_data_t draw_data;; |
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unsigned gid = 0; |
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hb_font_get_nominal_glyph (font, 0xAC01u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 2); |
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hb_variation_t var; |
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var.tag = HB_TAG ('w','g','h','t'); |
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var.value = 800; |
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hb_font_set_variations (font, &var, 1); |
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hb_font_get_nominal_glyph (font, 0xAC01u, &gid); |
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draw_data = draw_data0; |
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hb_font_draw_glyph (font, gid, funcs, &draw_data); |
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g_assert_cmpuint (draw_data.move_to_count, ==, 4); |
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hb_font_destroy (font); |
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} |
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#endif |
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int |
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main (int argc, char **argv) |
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{ |
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funcs = hb_draw_funcs_create (); |
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hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) move_to, NULL, NULL); |
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hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) line_to, NULL, NULL); |
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hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) quadratic_to, NULL, NULL); |
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hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) cubic_to, NULL, NULL); |
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hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) close_path, NULL, NULL); |
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hb_draw_funcs_make_immutable (funcs); |
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hb_test_init (&argc, &argv); |
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hb_test_add (test_itoa); |
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#ifdef HB_EXPERIMENTAL_API |
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hb_test_add (test_hb_draw_varc_simple_hangul); |
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hb_test_add (test_hb_draw_varc_simple_hanzi); |
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hb_test_add (test_hb_draw_varc_conditional); |
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#endif |
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unsigned result = hb_test_run (); |
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hb_draw_funcs_destroy (funcs); |
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return result; |
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}
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