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
main(int argc,char ** argv)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->y_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 
137