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zenity/src/util.c

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/*
* util.c
*
* Copyright (C) 2002 Sun Microsystems, Inc.
* (C) 1999, 2000 Red Hat Inc.
* (C) 1998 James Henstridge
* (C) 1995-2002 Free Software Foundation
*
* 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.
*
* Authors: Glynn Foster <glynn.foster@sun.com>
* Havoc Pennington <hp@redhat.com>
* James Henstridge <james@daa.com.au>
* Tom Tromey <tromey@redhat.com>
*/
#include <stdio.h>
#include <locale.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "config.h"
#include "util.h"
#include "zenity.h"
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#define ZENITY_OK_DEFAULT 0
#define ZENITY_CANCEL_DEFAULT 1
#define ZENITY_ESC_DEFAULT 1
#define ZENITY_ERROR_DEFAULT -1
#define ZENITY_EXTRA_DEFAULT 127
GladeXML*
zenity_util_load_glade_file (const gchar *widget_root)
{
GladeXML *xml = NULL;
if (g_file_test (ZENITY_GLADE_FILE_RELATIVEPATH, G_FILE_TEST_EXISTS)) {
/* Try current dir, for debugging */
xml = glade_xml_new (ZENITY_GLADE_FILE_RELATIVEPATH, widget_root, GETTEXT_PACKAGE);
}
if (xml == NULL)
xml = glade_xml_new (ZENITY_GLADE_FILE_FULLPATH, widget_root, GETTEXT_PACKAGE);
if (xml == NULL) {
g_warning ("Could not load glade file : %s", ZENITY_GLADE_FILE_FULLPATH);
return NULL;
}
return xml;
}
gchar*
zenity_util_strip_newline (gchar *string)
{
gsize len;
g_return_val_if_fail (string != NULL, NULL);
len = strlen (string);
while (len--)
{
if (string[len] == '\n')
string[len] = '\0';
else
break;
}
return string;
}
gboolean
zenity_util_fill_file_buffer (GtkTextBuffer *buffer, const gchar *filename)
{
GtkTextIter iter, end;
FILE *f;
gchar buf[2048];
gint remaining = 0;
if (filename == NULL)
return FALSE;
f = fopen (filename, "r");
if (f == NULL) {
g_warning ("Cannot open file '%s': %s", filename, g_strerror (errno));
return FALSE;
}
gtk_text_buffer_get_iter_at_offset (buffer, &iter, 0);
while (!feof (f)) {
gint count;
const char *leftover;
int to_read = 2047 - remaining;
count = fread (buf + remaining, 1, to_read, f);
buf[count + remaining] = '\0';
g_utf8_validate (buf, count + remaining, &leftover);
g_assert (g_utf8_validate (buf, leftover - buf, NULL));
gtk_text_buffer_insert (buffer, &iter, buf, leftover - buf);
remaining = (buf + remaining + count) - leftover;
g_memmove (buf, leftover, remaining);
if (remaining > 6 || count < to_read)
break;
}
if (remaining) {
g_warning ("Invalid UTF-8 data encountered reading file '%s'", filename);
return FALSE;
}
/* We had a newline in the buffer to begin with. (The buffer always contains
* a newline, so we delete to the end of the buffer to clean up.
*/
gtk_text_buffer_get_end_iter (buffer, &end);
gtk_text_buffer_delete (buffer, &iter, &end);
gtk_text_buffer_set_modified (buffer, FALSE);
return TRUE;
}
GdkPixbuf *
zenity_util_pixbuf_new_from_file (GtkWidget *widget, gchar *filename)
{
if (!strcasecmp (filename, "warning"))
return gtk_widget_render_icon (widget, GTK_STOCK_DIALOG_WARNING, GTK_ICON_SIZE_BUTTON, NULL);
if (!strcasecmp (filename, "info"))
return gtk_widget_render_icon (widget, GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_BUTTON, NULL);
if (!strcasecmp (filename, "question"))
return gtk_widget_render_icon (widget, GTK_STOCK_DIALOG_QUESTION, GTK_ICON_SIZE_BUTTON, NULL);
if (!strcasecmp (filename, "error"))
return gtk_widget_render_icon (widget, GTK_STOCK_DIALOG_ERROR, GTK_ICON_SIZE_BUTTON, NULL);
else
return gdk_pixbuf_new_from_file (filename, NULL);
}
void
zenity_util_set_window_icon (GtkWidget *widget, const gchar *filename, const gchar *default_file)
{
GdkPixbuf *pixbuf;
if (filename != NULL)
pixbuf = zenity_util_pixbuf_new_from_file (widget, (gchar *) filename);
else
pixbuf = gdk_pixbuf_new_from_file (default_file, NULL);
if (pixbuf != NULL) {
gtk_window_set_icon (GTK_WINDOW (widget), pixbuf);
g_object_unref (pixbuf);
}
}
void
zenity_util_set_window_icon_from_stock (GtkWidget *widget, const gchar *filename, const gchar *default_stock_id)
{
GdkPixbuf *pixbuf;
if (filename != NULL) {
pixbuf = zenity_util_pixbuf_new_from_file (widget, (gchar *) filename);
}
else {
pixbuf = gtk_widget_render_icon (widget, default_stock_id, GTK_ICON_SIZE_BUTTON, NULL);
}
if (pixbuf != NULL) {
gtk_window_set_icon (GTK_WINDOW (widget), pixbuf);
g_object_unref (pixbuf);
}
}
void
zenity_util_show_help (GError **error)
{
gchar *tmp;
tmp = g_find_program_in_path ("yelp");
if (tmp) {
g_free (tmp);
g_spawn_command_line_async ("yelp ghelp:zenity", error);
}
}
gint
zenity_util_return_exit_code ( ZenityExitCode value )
{
const gchar *env_var = NULL;
gint retval;
switch (value) {
case ZENITY_OK:
env_var = g_getenv("ZENITY_OK");
if (! env_var)
env_var = g_getenv("DIALOG_OK");
if (! env_var)
retval = ZENITY_OK_DEFAULT;
break;
case ZENITY_CANCEL:
env_var = g_getenv("ZENITY_CANCEL");
if (! env_var)
env_var = g_getenv("DIALOG_CANCEL");
if (! env_var)
retval = ZENITY_CANCEL_DEFAULT;
break;
case ZENITY_ESC:
env_var = g_getenv("ZENITY_ESC");
if (! env_var)
env_var = g_getenv("DIALOG_ESC");
if (! env_var)
retval = ZENITY_ESC_DEFAULT;
break;
case ZENITY_EXTRA:
env_var = g_getenv("ZENITY_EXTRA");
if (! env_var)
env_var = g_getenv("DIALOG_EXTRA");
if (! env_var)
retval = ZENITY_EXTRA_DEFAULT;
break;
case ZENITY_ERROR:
env_var = g_getenv("ZENITY_ERROR");
if (! env_var)
env_var = g_getenv("DIALOG_ERROR");
if (! env_var)
retval = ZENITY_ERROR_DEFAULT;
break;
default:
retval = 1;
}
if (env_var)
retval = atoi (env_var);
return retval;
}
#ifdef GDK_WINDOWING_X11
static Window
transient_get_xterm (void)
{
const char *wid_str = g_getenv ("WINDOWID");
if (wid_str) {
char *wid_str_end;
Window wid = strtoul (wid_str, &wid_str_end, 10);
if (*wid_str != '\0' && *wid_str_end == '\0' && wid != 0) {
XWindowAttributes attrs;
gdk_error_trap_push ();
XGetWindowAttributes (GDK_DISPLAY(), wid, &attrs);
gdk_flush();
if (gdk_error_trap_pop () != 0) {
return None;
}
return wid;
}
}
return None;
}
static void
transient_x_free (void *ptr)
{
if (ptr)
XFree (ptr);
}
static gboolean
transient_is_toplevel (Window wid)
{
XTextProperty prop;
Display *dpy = GDK_DISPLAY ();
if (!XGetWMName (dpy, wid, &prop))
return FALSE;
transient_x_free (prop.value);
return !!prop.value;
}
/*
* GNOME Terminal doesn't give us its toplevel window, but the WM needs a
* toplevel XID for proper stacking. Other terminals work fine without this
* magic. We can't use GDK here since "xterm" is a foreign window.
*/
static Window
transient_get_xterm_toplevel (void)
{
Window xterm = transient_get_xterm ();
Display *dpy = GDK_DISPLAY ();
while (xterm != None && !transient_is_toplevel (xterm))
{
Window root, parent, *children;
int nchildren;
XQueryTree (dpy, xterm,
&root, &parent,
&children, &nchildren);
transient_x_free (children);
if (parent == root)
xterm = None;
else
xterm = parent;
}
return xterm;
}
static void
zenity_util_make_transient (GdkWindow *window)
{
Window xterm = transient_get_xterm_toplevel ();
if (xterm != None) {
GdkWindow *gdkxterm = gdk_window_foreign_new (xterm);
if (gdkxterm) {
gdk_window_set_transient_for (window, gdkxterm);
g_object_unref (G_OBJECT (gdkxterm));
}
}
}
#endif /* GDK_WINDOWING_X11 */
void
zenity_util_show_dialog (GtkWidget *dialog)
{
gtk_widget_realize (dialog);
#ifdef GDK_WINDOWING_X11
g_assert (dialog->window);
zenity_util_make_transient (dialog->window);
#endif
gtk_widget_show (dialog);
}
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