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      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 #endif
     36 #include <stdlib.h>
     37 #include <stdio.h>
     38 
     39 #ifdef HAVE_FREETYPE
     40 #include "hb-ft.h"
     41 #endif
     42 
     43 int
     44 main (int argc, char **argv)
     45 {
     46   hb_blob_t *blob = NULL;
     47 
     48   if (argc != 2) {
     49     fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
     50     exit (1);
     51   }
     52 
     53   /* Create the blob */
     54   {
     55     const char *font_data;
     56     unsigned int len;
     57     hb_destroy_func_t destroy;
     58     void *user_data;
     59     hb_memory_mode_t mm;
     60 
     61 #ifdef HAVE_GLIB
     62     GMappedFile *mf = g_mapped_file_new (argv[1], false, NULL);
     63     font_data = g_mapped_file_get_contents (mf);
     64     len = g_mapped_file_get_length (mf);
     65     destroy = (hb_destroy_func_t) g_mapped_file_unref;
     66     user_data = (void *) mf;
     67     mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
     68 #else
     69     FILE *f = fopen (argv[1], "rb");
     70     fseek (f, 0, SEEK_END);
     71     len = ftell (f);
     72     fseek (f, 0, SEEK_SET);
     73     font_data = (const char *) malloc (len);
     74     if (!font_data) len = 0;
     75     len = fread ((char *) font_data, 1, len, f);
     76     destroy = free;
     77     user_data = (void *) font_data;
     78     fclose (f);
     79     mm = HB_MEMORY_MODE_WRITABLE;
     80 #endif
     81 
     82     blob = hb_blob_create (font_data, len, mm, user_data, destroy);
     83   }
     84 
     85   printf ("Opened font file %s: %u bytes long\n", argv[1], hb_blob_get_length (blob));
     86 
     87   /* Create the face */
     88   hb_face_t *face = hb_face_create (blob, 0 /* first face */);
     89   hb_blob_destroy (blob);
     90   blob = NULL;
     91   unsigned int upem = hb_face_get_upem (face);
     92 
     93   hb_font_t *font = hb_font_create (face);
     94   hb_font_set_scale (font, upem, upem);
     95 
     96 #ifdef HAVE_FREETYPE
     97   hb_ft_font_set_funcs (font);
     98 #endif
     99 
    100   hb_buffer_t *buffer = hb_buffer_create ();
    101 
    102   hb_buffer_add_utf8 (buffer, "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xb0\xe0\xa5\x8d\xe0\xa4\x95", -1, 0, -1);
    103 
    104   hb_shape (font, buffer, NULL, 0);
    105 
    106   unsigned int count = hb_buffer_get_length (buffer);
    107   hb_glyph_info_t *infos = hb_buffer_get_glyph_infos (buffer, NULL);
    108   hb_glyph_position_t *positions = hb_buffer_get_glyph_positions (buffer, NULL);
    109 
    110   for (unsigned int i = 0; i < count; i++)
    111   {
    112     hb_glyph_info_t *info = &infos[i];
    113     hb_glyph_position_t *pos = &positions[i];
    114 
    115     printf ("cluster %d	glyph 0x%x at	(%d,%d)+(%d,%d)\n",
    116 	    info->cluster,
    117 	    info->codepoint,
    118 	    pos->x_offset,
    119 	    pos->x_offset,
    120 	    pos->x_advance,
    121 	    pos->y_advance);
    122 
    123   }
    124 
    125   hb_buffer_destroy (buffer);
    126   hb_font_destroy (font);
    127   hb_face_destroy (face);
    128 
    129   return 0;
    130 }
    131 
    132 
    133