support.c

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/*
 *    Compaq Hot Plug Controller Graphical User Interface 
 *    Copyright 2000, 2001 Compaq Computer Corporation
 *    All rights reserved.
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    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, GOOD TITLE or
 *    NON INFRINGEMENT.  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *    Please send all questions or concerns to [e-mail]
 */

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

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

#include "support.h"

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

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,
                                        gboolean         gnome_pixmap)
{
	GdkColormap *colormap;
	GdkPixmap *gdkpixmap;
	GdkBitmap *mask;
	GtkWidget *pixmap;

	if (gnome_pixmap)
	{
		return gnome_pixmap_new_from_xpm_d (dummy_pixmap_xpm);
	}

	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;
}

// This is an internally used function to create pixmaps.
GtkWidget*
create_pixmap                          (GtkWidget       *widget,
                                        const gchar     *filename,
                                        gboolean         gnome_pixmap)
{
	GtkWidget *pixmap;
	GdkColormap *colormap;
	GdkPixmap *gdkpixmap;
	GdkBitmap *mask;
	gchar *pathname;

	pathname = gnome_pixmap_file (filename);
	if (!pathname)
	{
		g_warning (_("Couldn't find pixmap file: %s"), filename);
		return create_dummy_pixmap (widget, gnome_pixmap);
	}

	if (gnome_pixmap)
	{
		pixmap = gnome_pixmap_new_from_file (pathname);
		g_free (pathname);
		return pixmap;
	}

	colormap = gtk_widget_get_colormap (widget);
	gdkpixmap = gdk_pixmap_colormap_create_from_xpm (NULL, colormap, &mask,
                                                   NULL, pathname);
	if (gdkpixmap == NULL)
	{
		g_warning (_("Couldn't create pixmap from file: %s"), pathname);
		g_free (pathname);
		return create_dummy_pixmap (widget, gnome_pixmap);
	}
	g_free (pathname);

	pixmap = gtk_pixmap_new (gdkpixmap, mask);
	gdk_pixmap_unref (gdkpixmap);
	gdk_bitmap_unref (mask);
	return pixmap;
}

// This is an internally used function to create imlib images.
GdkImlibImage*
create_image                           (const gchar     *filename)
{
	GdkImlibImage *image;
	gchar *pathname;

	pathname = gnome_pixmap_file (filename);
	if (!pathname)
	{
		g_warning (_("Couldn't find pixmap file: %s"), filename);
		return NULL;
	}

	image = gdk_imlib_load_image (pathname);
	g_free (pathname);
	return image;
}