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/* viewer-main.c: Main routine for viewers
*
* Copyright (C) 1999,2004,2005 Red Hat, Inc.
* Copyright (C) 2001 Sun Microsystems
* Copyright (C) 2006 Behdad Esfahbod
*
* 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 <locale.h>
#include <glib.h>
#include <glib/gstdio.h>
#ifdef G_OS_UNIX
#include <sys/wait.h>
#endif
#include "viewer.h"
#include "viewer-render.h"
int
main (int argc,
char **argv)
{
const PangoViewer *view;
gpointer instance;
PangoContext *context;
int run;
int width, height;
gpointer surface;
g_set_prgname ("pango-view");
setlocale (LC_ALL, "");
parse_options (argc, argv);
view = opt_viewer;
g_assert (view->id);
instance = view->create (view);
context = view->get_context (instance);
width = height = 1;
surface = view->create_surface (instance, width, height);
view->render (instance, surface, context, &width, &height, NULL);
view->destroy_surface (instance, surface);
surface = view->create_surface (instance, width, height);
for (run = 0; run < MAX(1,opt_runs); run++)
view->render (instance, surface, context, &width, &height, NULL);
if (opt_output)
{
if (!view->write)
fail ("%s viewer backend does not support writing", view->name);
else
{
FILE *stream;
GPid pid = 0;
if (view->write_suffix && g_str_has_suffix (opt_output, view->write_suffix))
{
stream = g_fopen (opt_output, "wb");
if (!stream)
fail ("Cannot open output file %s: %s\n",
opt_output, g_strerror (errno));
}
else
{
int fd;
const gchar *convert_argv[5] = {"gm", "convert", "-", "%s"};
GError *error;
convert_argv[3] = opt_output;
if (!g_spawn_async_with_pipes (NULL, (gchar **)(void*)convert_argv, NULL,
G_SPAWN_DO_NOT_REAP_CHILD |
G_SPAWN_SEARCH_PATH |
G_SPAWN_STDOUT_TO_DEV_NULL |
G_SPAWN_STDERR_TO_DEV_NULL,
NULL, NULL, &pid, &fd, NULL, NULL, &error))
fail ("When running GraphicsMagick 'gm convert' command: %s\n", error->message);
stream = fdopen (fd, "wb");
}
view->write (instance, surface, stream, width, height);
fclose (stream);
#ifdef G_OS_UNIX
if (pid)
waitpid (pid, NULL, 0);
#endif
}
}
if (opt_display)
{
char *title;
title = get_options_string ();
if (view->display)
{
gpointer window = NULL;
gpointer state = NULL;
if (view->create_window)
{
window = view->create_window (instance, title, width, height);
if (!window)
goto no_display;
}
opt_display = FALSE;
while (1)
{
state = view->display (instance, surface, window, width, height, state);
if (state == GINT_TO_POINTER (-1))
break;
view->render (instance, surface, context, &width, &height, state);
}
if (view->destroy_window)
view->destroy_window (instance, window);
}
no_display:
/* If failed to display natively, call ImageMagick */
if (opt_display)
{
int fd;
FILE *stream;
const gchar *display_argv[6] = {"gm", "display", "-title", "%s", "-"};
GError *error = NULL;
GPid pid;
if (!view->write)
fail ("%s viewer backend does not support displaying or writing", view->name);
display_argv[3] = title;
if (!g_spawn_async_with_pipes (NULL, (gchar **)(void*)display_argv, NULL,
G_SPAWN_DO_NOT_REAP_CHILD |
G_SPAWN_SEARCH_PATH |
G_SPAWN_STDOUT_TO_DEV_NULL |
G_SPAWN_STDERR_TO_DEV_NULL,
NULL, NULL, &pid, &fd, NULL, NULL, &error))
fail ("When running GraphicsMagick 'gm display' command: %s\n", error->message);
stream = fdopen (fd, "wb");
view->write (instance, surface, stream, width, height);
fclose (stream);
#ifdef G_OS_UNIX
waitpid (pid, NULL, 0);
#endif
g_spawn_close_pid (pid);
}
g_free (title);
}
view->destroy_surface (instance, surface);
g_object_unref (context);
view->destroy (instance);
finalize ();
return 0;
}
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