#ifndef __SP_PATTERN_H__
#define __SP_PATTERN_H__

/*
 * SVG <pattern> implementation
 *
 * Author:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *
 * Copyright (C) 2002 Lauris Kaplinski
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include <gtk/gtktypeutils.h>

#include "forward.h"

#define SP_TYPE_PATTERN (sp_pattern_get_type ())
#define SP_PATTERN(o) (GTK_CHECK_CAST ((o), SP_TYPE_PATTERN, SPPattern))
#define SP_PATTERN_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), SP_TYPE_PATTERN, SPPatternClass))
#define SP_IS_PATTERN(o) (GTK_CHECK_TYPE ((o), SP_TYPE_PATTERN))
#define SP_IS_PATTERN_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), SP_TYPE_PATTERN))

GType sp_pattern_get_type (void);

class SPPatternClass;

#include <libnr/nr-rect.h>
#include <libnr/nr-matrix.h>
#include "svg/svg-length.h"
#include "sp-paint-server.h"
#include "uri-references.h"

#include <sigc++/connection.h>

class SPPatternReference : public Inkscape::URIReference {
public:
        SPPatternReference (SPObject *obj) : URIReference(obj) {}
        SPPattern *getObject() const {
                return (SPPattern *)URIReference::getObject();
        }
protected:
        virtual bool _acceptObject(SPObject *obj) const {
                return SP_IS_PATTERN (obj);
        }
};

enum {
	SP_PATTERN_UNITS_USERSPACEONUSE,
	SP_PATTERN_UNITS_OBJECTBOUNDINGBOX
};

struct SPPattern : public SPPaintServer {
	/* Reference (href) */
	gchar *href;
	SPPatternReference *ref;

	/* patternUnits and patternContentUnits attribute */
	guint patternUnits : 1;
	guint patternUnits_set : 1;
	guint patternContentUnits : 1;
	guint patternContentUnits_set : 1;
	/* patternTransform attribute */
	NR::Matrix patternTransform;
	guint patternTransform_set : 1;
	/* Tile rectangle */
	SVGLength x;
	SVGLength y;
	SVGLength width;
	SVGLength height;
	/* VieBox */
	NRRect viewBox;
	guint viewBox_set : 1;

	sigc::connection modified_connection;
};

struct SPPatternClass {
	SPPaintServerClass parent_class;
};

guint pattern_users (SPPattern *pattern);
SPPattern *pattern_chain (SPPattern *pattern);
SPPattern *sp_pattern_clone_if_necessary (SPItem *item, SPPattern *pattern, const gchar *property);
void sp_pattern_transform_multiply (SPPattern *pattern, NR::Matrix postmul, bool set);

const gchar *pattern_tile (GSList *reprs, NR::Rect bounds, SPDocument *document, NR::Matrix transform, NR::Matrix move);

SPPattern *pattern_getroot (SPPattern *pat);

guint pattern_patternUnits (SPPattern *pat);
guint pattern_patternContentUnits (SPPattern *pat);
NR::Matrix const &pattern_patternTransform(SPPattern const *pat);
gdouble pattern_x (SPPattern *pat);
gdouble pattern_y (SPPattern *pat);
gdouble pattern_width (SPPattern *pat);
gdouble pattern_height (SPPattern *pat);
NRRect *pattern_viewBox (SPPattern *pat);


#endif