1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/* Pango
* pangoft2topgm.c: Example program to view a UTF-8 encoding file
* using Pango to render result.
*
* Copyright (C) 1999 Red Hat Software
* Copyright (C) 2001 Sun Microsystems
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "renderdemo.h"
#include <pango/pangoft2.h>
static char *tmpfile_name;
static void
ft2_render (PangoLayout *layout,
int x,
int y,
gpointer data)
{
pango_ft2_render_layout (data, layout, x, y);
}
int
main(int argc, char *argv[])
{
PangoContext *context;
FILE *outfile;
PangoFontMap *fontmap;
GError *error = NULL;
gboolean do_convert = FALSE;
g_type_init();
parse_options (argc, argv);
if (opt_output)
{
if (!(g_str_has_suffix (opt_output, ".pgm") ||
g_str_has_suffix (opt_output, ".PGM")))
do_convert = TRUE;
}
if (opt_output && !do_convert)
{
outfile = fopen (opt_output, "wb");
if (!outfile)
fail ("Cannot open output file %s: %s\n",
opt_output, g_strerror (errno));
}
else /* --display */
{
/* This may need to be G_OS_UNIX guarded for fdopen */
int fd = g_file_open_tmp ("pangoft2pgmXXXXXX", &tmpfile_name, &error);
if (fd == 1)
fail ("Cannot open temporary file: %s\n", error->message);
outfile = fdopen (fd, "wb");
if (!outfile)
fail ("Cannot open temporary file: %s\n", g_strerror (errno));
}
fontmap = pango_ft2_font_map_new ();
pango_ft2_font_map_set_resolution (PANGO_FT2_FONT_MAP (fontmap), opt_dpi, opt_dpi);
context = pango_ft2_font_map_create_context (PANGO_FT2_FONT_MAP (fontmap));
/* Write contents as pgm file */
{
FT_Bitmap bitmap;
guchar *buf;
int row;
int width, height;
do_output (context, NULL, NULL, &width, &height);
bitmap.width = width;
bitmap.pitch = (bitmap.width + 3) & ~3;
bitmap.rows = height;
buf = bitmap.buffer = g_malloc (bitmap.pitch * bitmap.rows);
bitmap.num_grays = 256;
bitmap.pixel_mode = ft_pixel_mode_grays;
memset (buf, 0x00, bitmap.pitch * bitmap.rows);
do_output (context, ft2_render, &bitmap, &width, &height);
/* Invert bitmap to get black text on white background */
{
int pix_idx;
for (pix_idx=0; pix_idx<bitmap.pitch * bitmap.rows; pix_idx++)
{
buf[pix_idx] = 255-buf[pix_idx];
}
}
/* Write it as pgm to output */
fprintf(outfile,
"P5\n"
"%d %d\n"
"255\n", bitmap.width, bitmap.rows);
for (row = 0; row < bitmap.rows; row++)
fwrite(bitmap.buffer + row * bitmap.pitch,
1, bitmap.width,
outfile);
g_free (buf);
if (fclose(outfile) == EOF)
fail ("Error writing output file: %s\n", g_strerror (errno));
/* Convert to a different format, if necessary */
if (do_convert)
{
int exit_status;
gchar *command = g_strdup_printf ("convert %s %s",
tmpfile_name,
opt_output);
if (!g_spawn_command_line_sync (command, NULL, NULL, &exit_status, &error))
fail ("When running ImageMagick 'convert' command: %s\n",
error->message);
if (tmpfile_name)
{
remove (tmpfile_name);
tmpfile_name = NULL;
}
if (exit_status)
exit (1);
}
if (opt_display)
{
int exit_status;
gchar *title = get_options_string ();
gchar *title_quoted = g_shell_quote (title);
gchar *command = g_strdup_printf ("display -title %s %s",
title_quoted,
opt_output ? opt_output: tmpfile_name);
if (!g_spawn_command_line_sync (command, NULL, NULL, &exit_status, &error))
fail ("When running ImageMagick 'display' command: %s\n",
error->message);
g_free (command);
g_free (title);
g_free (title_quoted);
if (tmpfile_name)
remove (tmpfile_name);
if (exit_status)
exit (1);
}
}
return 0;
}
|
