third_party/harfbuzz-ng/src/test.cc

   1 /*
   2  * Copyright © 2010,2011  Google, Inc.
   3  *
   4  *  This is part of HarfBuzz, a text shaping library.
   5  *
   6  * Permission is hereby granted, without written agreement and without
   7  * license or royalty fees, to use, copy, modify, and distribute this
   8  * software and its documentation for any purpose, provided that the
   9  * above copyright notice and the following two paragraphs appear in
  10  * all copies of this software.
  11  *
  12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  16  * DAMAGE.
  17  *
  18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  23  *
  24  * Google Author(s): Behdad Esfahbod
  25  */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include "hb.h"
  32
  33 #ifdef HAVE_GLIB
  34 # include <glib.h>
  35 # if !GLIB_CHECK_VERSION (2, 22, 0)
  36 #  define g_mapped_file_unref g_mapped_file_free
  37 # endif
  38 #endif
  39 #include <stdlib.h>
  40 #include <stdio.h>
  41
  42 #ifdef HAVE_FREETYPE
  43 #include "hb-ft.h"
  44 #endif
  45
  46 int
  47 main (int argc, char **argv)
  48 {
  49   hb_blob_t *blob = NULL;
  50
  51   if (argc != 2) {
  52     fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
  53     exit (1);
  54   }
  55
  56   /* Create the blob */
  57   {
  58     const char *font_data;
  59     unsigned int len;
  60     hb_destroy_func_t destroy;
  61     void *user_data;
  62     hb_memory_mode_t mm;
  63
  64 #ifdef HAVE_GLIB
  65     GMappedFile *mf = g_mapped_file_new (argv[1], false, NULL);
  66     font_data = g_mapped_file_get_contents (mf);
  67     len = g_mapped_file_get_length (mf);
  68     destroy = (hb_destroy_func_t) g_mapped_file_unref;
  69     user_data = (void *) mf;
  70     mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
  71 #else
  72     FILE *f = fopen (argv[1], "rb");
  73     fseek (f, 0, SEEK_END);
  74     len = ftell (f);
  75     fseek (f, 0, SEEK_SET);
  76     font_data = (const char *) malloc (len);
  77     if (!font_data) len = 0;
  78     len = fread ((char *) font_data, 1, len, f);
  79     destroy = free;
  80     user_data = (void *) font_data;
  81     fclose (f);
  82     mm = HB_MEMORY_MODE_WRITABLE;
  83 #endif
  84
  85     blob = hb_blob_create (font_data, len, mm, user_data, destroy);
  86   }
  87
  88   printf ("Opened font file %s: %u bytes long\n", argv[1], hb_blob_get_length (blob));
  89
  90   /* Create the face */
  91   hb_face_t *face = hb_face_create (blob, 0 /* first face */);
  92   hb_blob_destroy (blob);
  93   blob = NULL;
  94   unsigned int upem = hb_face_get_upem (face);
  95
  96   hb_font_t *font = hb_font_create (face);
  97   hb_font_set_scale (font, upem, upem);
  98
  99 #ifdef HAVE_FREETYPE
 100   hb_ft_font_set_funcs (font);
 101 #endif
 102
 103   hb_buffer_t *buffer = hb_buffer_create ();
 104
 105   hb_buffer_add_utf8 (buffer, "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xb0\xe0\xa5\x8d\xe0\xa4\x95", -1, 0, -1);
 106   hb_buffer_guess_segment_properties (buffer);
 107
 108   hb_shape (font, buffer, NULL, 0);
 109
 110   unsigned int count = hb_buffer_get_length (buffer);
 111   hb_glyph_info_t *infos = hb_buffer_get_glyph_infos (buffer, NULL);
 112   hb_glyph_position_t *positions = hb_buffer_get_glyph_positions (buffer, NULL);
 113
 114   for (unsigned int i = 0; i < count; i++)
 115   {
 116     hb_glyph_info_t *info = &infos[i];
 117     hb_glyph_position_t *pos = &positions[i];
 118
 119     printf ("cluster %d glyph 0x%x at   (%d,%d)+(%d,%d)\n",
 120             info->cluster,
 121             info->codepoint,
 122             pos->x_offset,
 123             pos->x_offset,
 124             pos->x_advance,
 125             pos->y_advance);
 126
 127   }
 128
 129   hb_buffer_destroy (buffer);
 130   hb_font_destroy (font);
 131   hb_face_destroy (face);
 132
 133   return 0;
 134 }
 135
 136