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/* Pango
* pangoft2topgm.c: Example program to view a UTF-8 encoding file
* using PangoFT2 to render result.
*
* Copyright (C) 1999,2004,2005 Red Hat, Inc.
* 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 <config.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "renderdemo.h"
#include <pango/pangoft2.h>
static void
do_render (PangoLayout *layout,
int x,
int y,
gpointer data,
gboolean show_borders)
{
pango_ft2_render_layout (data, layout, x, y);
}
int
main(int argc, char *argv[])
{
PangoContext *context;
FILE *outfile = NULL;
PangoFontMap *fontmap;
GError *error = NULL;
gboolean do_convert = FALSE;
int exit_status = 0;
char *tmpfile_name;
gboolean gen_output = TRUE;
g_type_init();
parse_options (argc, argv);
if (opt_output && !*opt_output)
gen_output = FALSE;
if (gen_output)
{
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);
pango_ft2_font_map_set_default_substitute (PANGO_FT2_FONT_MAP (fontmap), fc_substitute_func, NULL, NULL);
context = pango_ft2_font_map_create_context (PANGO_FT2_FONT_MAP (fontmap));
g_object_unref (fontmap);
{
FT_Bitmap bitmap;
guchar *buf;
int row;
int width, height;
int run;
do_output (context, NULL, NULL, NULL, &width, &height, FALSE);
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);
for (run = 0; run < opt_runs; run++)
do_output (context, do_render, NULL, &bitmap, &width, &height, FALSE);
if (gen_output)
{
/* 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)
{
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);
g_free (command);
if (tmpfile_name)
{
remove (tmpfile_name);
g_free (tmpfile_name);
tmpfile_name = NULL;
}
if (exit_status)
goto done;
}
if (opt_display)
{
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);
g_free (tmpfile_name);
tmpfile_name = NULL;
}
if (exit_status)
goto done;
}
}
}
done:
g_object_unref (context);
finalize ();
return exit_status ? 1 : 0;
}
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