support.c

Screentest is a CRT/LCD screen testing utility.

/* $Id: support.c,v 1.1.1.1 2001/08/20 18:10:55 kas Exp $ */

/*
 *  Screentest - CRT monitor testing utility.
 *  http://www.fi.muni.cz/~kas/screentest/
 *  Copyright (C) 2001 Jan "Yenya" Kasprzak <[e-mail]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
/*
 * DO NOT EDIT THIS FILE - it is generated by Glade.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>

#include <gtk/gtk.h>

#include "support.h"

/* This is an internally used function to check if a pixmap file exists. */
static gchar *check_file_exists(const gchar * directory,
				const gchar * filename);

/* This is an internally used function to create pixmaps. */
static GtkWidget *create_dummy_pixmap(GtkWidget * widget);

GtkWidget *lookup_widget(GtkWidget * widget, const gchar * widget_name)
{
	GtkWidget *parent, *found_widget;

	for (;;) {
		if (GTK_IS_MENU(widget))
			parent =
			    gtk_menu_get_attach_widget(GTK_MENU(widget));
		else
			parent = widget->parent;
		if (parent == NULL)
			break;
		widget = parent;
	}

	found_widget =
	    (GtkWidget *) gtk_object_get_data(GTK_OBJECT(widget),
					      widget_name);
	if (!found_widget)
		g_warning("Widget not found: %s", widget_name);
	return found_widget;
}

/* This is a dummy pixmap we use when a pixmap can't be found. */
static char *dummy_pixmap_xpm[] = {
/* columns rows colors chars-per-pixel */
	"1 1 1 1",
	"  c None",
/* pixels */
	" "
};

/* This is an internally used function to create pixmaps. */
static GtkWidget *create_dummy_pixmap(GtkWidget * widget)
{
	GdkColormap *colormap;
	GdkPixmap *gdkpixmap;
	GdkBitmap *mask;
	GtkWidget *pixmap;

	colormap = gtk_widget_get_colormap(widget);
	gdkpixmap =
	    gdk_pixmap_colormap_create_from_xpm_d(NULL, colormap, &mask,
						  NULL, dummy_pixmap_xpm);
	if (gdkpixmap == NULL)
		g_error("Couldn't create replacement pixmap.");
	pixmap = gtk_pixmap_new(gdkpixmap, mask);
	gdk_pixmap_unref(gdkpixmap);
	gdk_bitmap_unref(mask);
	return pixmap;
}

static GList *pixmaps_directories = NULL;

/* Use this function to set the directory containing installed pixmaps. */
void add_pixmap_directory(const gchar * directory)
{
	pixmaps_directories = g_list_prepend(pixmaps_directories,
					     g_strdup(directory));
}

/* This is an internally used function to create pixmaps. */
GtkWidget *create_pixmap(GtkWidget * widget, const gchar * filename)
{
	gchar *found_filename = NULL;
	GdkColormap *colormap;
	GdkPixmap *gdkpixmap;
	GdkBitmap *mask;
	GtkWidget *pixmap;
	GList *elem;

	if (!filename || !filename[0])
		return create_dummy_pixmap(widget);

	/* We first try any pixmaps directories set by the application. */
	elem = pixmaps_directories;
	while (elem) {
		found_filename =
		    check_file_exists((gchar *) elem->data, filename);
		if (found_filename)
			break;
		elem = elem->next;
	}

	/* If we haven't found the pixmap, try the source directory. */
	if (!found_filename) {
		found_filename = check_file_exists("../pixmaps", filename);
	}

	if (!found_filename) {
		g_warning("Couldn't find pixmap file: %s", filename);
		return create_dummy_pixmap(widget);
	}

	colormap = gtk_widget_get_colormap(widget);
	gdkpixmap =
	    gdk_pixmap_colormap_create_from_xpm(NULL, colormap, &mask,
						NULL, found_filename);
	if (gdkpixmap == NULL) {
		g_warning("Error loading pixmap file: %s", found_filename);
		g_free(found_filename);
		return create_dummy_pixmap(widget);
	}
	g_free(found_filename);
	pixmap = gtk_pixmap_new(gdkpixmap, mask);
	gdk_pixmap_unref(gdkpixmap);
	gdk_bitmap_unref(mask);
	return pixmap;
}

/* This is an internally used function to check if a pixmap file exists. */
gchar *check_file_exists(const gchar * directory, const gchar * filename)
{
	gchar *full_filename;
	struct stat s;
	gint status;

	full_filename = (gchar *) g_malloc(strlen(directory) + 1
					   + strlen(filename) + 1);
	strcpy(full_filename, directory);
	strcat(full_filename, G_DIR_SEPARATOR_S);
	strcat(full_filename, filename);

	status = stat(full_filename, &s);
	if (status == 0 && S_ISREG(s.st_mode))
		return full_filename;
	g_free(full_filename);
	return NULL;
}