/*
 *  Copyright (C) 2007 Daniel Bessler <danielb@kiba-dock.org>
 *
 *  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.  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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.
 *
 *  Author : Daniel Bessler <danielb@kiba-dock.org>
*/

#include <kiba-icon.h>
#include <kiba-macros.h>

#define ICON_SURFACE_WIDTH  50.0
#define ICON_SURFACE_HEIGHT 50.0

#define FALLBACK_ICON       "kiba-dock"

G_DEFINE_TYPE (KibaIcon, kiba_icon, KIBA_TYPE_OBJECT)

void kiba_icon_set_pixbuf (KibaIcon  *icon,
			   GdkPixbuf *pixbuf) {
	g_return_if_fail (KIBA_IS_ICON (icon));
	g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
	
	if (icon->file) {
		g_free (icon->file);
		icon->file = NULL;
	}
	if (icon->pixbuf) {
		g_object_unref (icon->pixbuf);
		icon->pixbuf = NULL;
	}
	icon->pixbuf = pixbuf;
	
	KIBA_OBJECT(icon)->surface_buffer->needs_update = TRUE;
	gtk_widget_queue_draw (GTK_WIDGET(icon)->parent->parent);
}

GdkPixbuf* kiba_icon_get_pixbuf (KibaIcon *icon) {
	g_return_if_fail (KIBA_IS_ICON (icon));
	
	return icon->pixbuf;
}

void kiba_icon_set_file (KibaIcon   *icon,
                         const char *file) {
	g_return_if_fail (KIBA_IS_ICON (icon));
	g_return_if_fail (file != NULL);
	
	if (icon->file && strcmp (file, icon->file) == 0)
		return;
	
	if (!kiba_load_icon (file, KIBA_OBJECT(icon)->allocation.width, &icon->pixbuf)) {
		if (icon->file)
			kiba_load_icon (icon->file, KIBA_OBJECT(icon)->allocation.width, &icon->pixbuf);
		return;
	}
	
	if (icon->file) {
		g_free (icon->file);
		icon->file = NULL;
	}
	icon->file = g_strdup(file);
	
	KIBA_OBJECT(icon)->surface_buffer->needs_update = TRUE;
	gtk_widget_queue_draw (GTK_WIDGET(icon)->parent->parent);
}

const char* kiba_icon_get_file (KibaIcon  *icon) {
	g_return_if_fail (KIBA_IS_ICON (icon));
	
	return icon->file;
}

void kiba_icon_set_size (KibaIcon  *icon,
			 gint       size) {
// 	kiba_object_set_size (KIBA_OBJECT(icon), size, size);
}

gint kiba_icon_get_size (KibaIcon *icon) {
	return GTK_WIDGET(icon)->allocation.height;
}

static void kiba_icon_paint (KibaObject *object,
				  cairo_t    *cr) {
	g_return_if_fail (KIBA_IS_OBJECT (object));
	g_return_if_fail (object->surface_buffer != NULL);
	
	cairo_set_source_surface (cr, object->surface_buffer->surface, 0.0, 0.0);
	cairo_paint (cr);
}

static void kiba_icon_surface (KibaObject *object,
			       cairo_t    *cr) {
	g_return_if_fail (KIBA_IS_ICON(object));
	g_return_if_fail (GDK_IS_PIXBUF(KIBA_ICON(object)->pixbuf));
	
	gdk_cairo_set_source_pixbuf (cr, KIBA_ICON(object)->pixbuf, 0.0, 0.0);
	cairo_paint (cr);
}

static void kiba_icon_unrealize (GtkWidget *widget) {
	if (GDK_IS_PIXBUF (KIBA_ICON(widget)->pixbuf))
		g_object_unref (KIBA_ICON(widget)->pixbuf);
	if (KIBA_ICON(widget)->file)
		g_free (KIBA_ICON(widget)->file);
	
	(* GTK_WIDGET_CLASS (kiba_icon_parent_class)->unrealize) (widget);
}

static void kiba_icon_realize (GtkWidget *widget) {
	(* GTK_WIDGET_CLASS (kiba_icon_parent_class)->realize) (widget);
	
	kiba_surface_init (&KIBA_OBJECT(widget)->surface_buffer,
		KIBA_OBJECT_SURFACE, KIBA_OBJECT(widget)->allocation.height,
		KIBA_OBJECT(widget)->allocation.height);
	if (KIBA_ICON(widget)->file)
		kiba_load_icon (KIBA_ICON(widget)->file,
			KIBA_OBJECT(widget)->allocation.width,
			&KIBA_ICON(widget)->pixbuf);
	if (!KIBA_ICON(widget)->pixbuf)
		kiba_load_icon (FALLBACK_ICON,
			KIBA_OBJECT(widget)->allocation.width,
			&KIBA_ICON(widget)->pixbuf);
}

static void kiba_icon_class_init (KibaIconClass *class) {
	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
	
	widget_class->realize   = kiba_icon_realize;
	widget_class->unrealize = kiba_icon_unrealize;
}

static void kiba_icon_init (KibaIcon *icon) {
	KIBA_OBJECT(icon)->allocation.width  = 48;
	KIBA_OBJECT(icon)->allocation.height = 48;
	
	KIBA_OBJECT(icon)->paint   = kiba_icon_paint;
	KIBA_OBJECT(icon)->surface = kiba_icon_surface;
	
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_VISIBLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_MOVEABLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_PRELIGHTABLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_ZOOMABLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_BOUNCEABLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_PULSEABLE);
	SET_FLAG (KIBA_OBJECT(icon)->props, KIBA_OBJECT_ROTATEABLE);
}

GtkWidget* kiba_icon_new_from_file (const char *file) {
	KibaIcon *icon;
	
	icon = g_object_new (KIBA_TYPE_ICON, NULL);
	icon->file = g_strdup (file);
	
	return GTK_WIDGET(icon);
}

GtkWidget* kiba_icon_new () {
	KibaIcon *icon;
	
	icon = g_object_new (KIBA_TYPE_ICON, NULL);
	icon->file = NULL;
	
	return GTK_WIDGET(icon);
}