/*
 * objects.h
 *
 * Colloquium - A tiny presentation program
 *
 * Copyright (c) 2011 Thomas White <taw@bitwiz.org.uk>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef OBJECTS_H
#define OBJECTS_H

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


#include "loadsave.h"


enum objtype
{
	OBJ_UNKNOWN,
	OBJ_TEXT,
	OBJ_IMAGE,
};


struct object
{
	enum objtype   type;
	struct slide  *parent;
	struct style  *style;

	/* Position of corner of object */
	double         x;
	double         y;

	/* Side of rectangular bounding box of object */
	double         bb_width;
	double         bb_height;

	int            empty;

	void           (*render_object)(cairo_t *cr, struct object *o);
	void           (*update_object)(struct object *o);
	void           (*delete_object)(struct object *o);
	void           (*serialize)(struct object *o, struct serializer *ser);
};


struct image_store;

struct image
{
	char       *filename;
	GdkPixbuf  *pb;
	int         width;
	int         height;

	int         refcount;

	struct image_store *parent;
};


enum corner
{
	CORNER_NONE,
	CORNER_TL,
	CORNER_TR,
	CORNER_BL,
	CORNER_BR
};


extern struct image *get_image(struct image_store *is, char *filename);
extern struct image_store *image_store_new(void);
extern void unref_image(struct image *i);

extern void notify_style_update(struct presentation *p,
                                 struct style *sty);

extern void delete_object(struct object *o);

extern void realise_everything(struct presentation *p);

extern enum corner which_corner(double xp, double yp, struct object *o);

#endif	/* OBJECTS_H */