/* diversity-viewport.h - DiversityViewport, a glance at the glorious world
 *
 * Copyright 2007-2008 OpenMoko, Inc.
 * Authored by Chia-I Wu <olv@openmoko.com>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _DIVERSITY_VIEWPORT_H_
#define _DIVERSITY_VIEWPORT_H_

#define G_DISABLE_CAST_CHECKS

#include <glib.h>
#include <glib-object.h>
#include <diversity-object.h>

G_BEGIN_DECLS

#define DIVERSITY_TYPE_VIEWPORT			(diversity_viewport_get_type())
#define DIVERSITY_VIEWPORT(obj)			(G_TYPE_CHECK_INSTANCE_CAST((obj), DIVERSITY_TYPE_VIEWPORT, DiversityViewport))
#define DIVERSITY_VIEWPORT_CLASS(klass)		(G_TYPE_CHECK_CLASS_CAST((klass), DIVERSITY_TYPE_VIEWPORT, DiversityViewportClass))
#define DIVERSITY_IS_VIEWPORT(obj)		(G_TYPE_CHECK_INSTANCE_TYPE((obj), DIVERSITY_TYPE_VIEWPORT))
#define DIVERSITY_IS_VIEWPORT_CLASS(klass)	(G_TYPE_CHECK_CLASS_TYPE((klass), DIVERSITY_TYPE_VIEWPORT))
#define DIVERSITY_VIEWPORT_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), DIVERSITY_TYPE_VIEWPORT, DiversityViewportClass))

typedef struct _DiversityViewport DiversityViewport;
typedef struct _DiversityViewportClass DiversityViewportClass;

typedef gboolean (*DiversityViewportFilter)(DiversityViewport *view, DiversityObject *obj, gpointer data);

struct _DiversityViewport {
	DiversityObject parent_object;
};

struct _DiversityViewportClass {
	DiversityObjectClass parent_class;

	void (*enabled)(DiversityViewport *view, gboolean enabled);

	void (*object_added)(DiversityViewport *view, DiversityObject *obj);
	void (*object_removed)(DiversityViewport *view, DiversityObject *obj);
	void (*object_cleared)(DiversityViewport *view);
	void (*filter_changed)(DiversityViewport *view);
};

GType diversity_viewport_get_type(void) G_GNUC_CONST;

DiversityViewport *diversity_viewport_new(gdouble lon1, gdouble lat1, gdouble lon2, gdouble lat2);

gboolean diversity_viewport_add_object(DiversityViewport *view, DiversityObject *obj);
void diversity_viewport_remove_object(DiversityViewport *view, DiversityObject *obj);

void diversity_viewport_set_filter(DiversityViewport *view, DiversityViewportFilter filter, gpointer data);
void diversity_viewport_set_rule(DiversityViewport *view, DiversityObjectType type, gint mask, gint value);

void diversity_viewport_clear_objects(DiversityViewport *view);
guint diversity_viewport_count_objects(DiversityViewport *view);
const GSList *diversity_viewport_get_objects(DiversityViewport *view);

void diversity_viewport_set_enabled(DiversityViewport *view, gboolean enabled);
gboolean diversity_viewport_get_enabled(DiversityViewport *view);

G_END_DECLS

#endif /* _DIVERSITY_VIEWPORT_H_ */