#include "pixmapitem.h"
#include "itabs.h"

PixmapItem::PixmapItem( NodeItem *from, NodeItem *to )
	: EdgeItem(from, to), QGraphicsPixmapItem ()
{
	item_type = type();
	filename = QString();
	orig_image = new QPixmap(":images/checkerboard.png");
	scale_image = new QPixmap(":images/checkerboard.png");
	setPixmap(scale_image->scaled(10,10));
	setPos(10,50);
	from->setOutEdge( (EdgeItem *)this );
	to->setInEdge( (EdgeItem *)this );
	setFlag(ItemIsSelectable);
	setFlag(ItemIsMovable);
}
PixmapItem::PixmapItem( QDomElement el )
	: EdgeItem(new NodeItem(), new NodeItem()), QGraphicsPixmapItem()
{
	item_type = type();
	int x1 = el.attribute("x").toInt(), y1 = el.attribute("y").toInt(), width = el.attribute("width").toInt(), height = el.attribute("height").toInt();
	QDomCDATASection cd = el.firstChild().toCDATASection ();

	orig_image = new QPixmap();
	QByteArray bytes = QByteArray::fromBase64(cd.data().toAscii ());
	orig_image->loadFromData(bytes);
	scale_image = new QPixmap();
	scale_image->loadFromData(bytes);
	setPos(x1,y1);
	setPixmap(scale_image->scaled(width,height));
	setFromPoint(x1,y1);
	setToPoint(x1+width, y1+height);
	setCursor(QCursor(Qt::SizeAllCursor));
	setFlag(ItemIsSelectable);
	setFlag(ItemIsMovable);
}
void PixmapItem::paintItem( int x0, int y0, QPainter *pp, qreal scale ) 
{
	QRect r = pixmap().rect();
	QRect r1 = orig_image->rect();
//	QPixmap *p = orig_image;
//	QImage image(filename);
//	QImage image1 = image.scaled(int(r.width()*scale),int(r.height()*scale));
	QPixmap image1 = orig_image->scaled(int(r.width()*scale),int(r.height()*scale));
//	pp->drawImage(QPoint(int((x()+scenePos().x())*scale+x0), int((y()+scenePos().y())*scale)+y), image1);
	pp->drawPixmap(int(x()*scale+x0), int((y())*scale)+y0, image1);
}
void PixmapItem::setFromPoint( int x0, int y0 )
{
	setBlock(true);
	QPointF p = to_node->pos();
	qreal dx, dy;
	dx = p.x()-x0;
	dy = p.y()-y0;
	if(dx<=0) dx=3;
	if(dy<=0) dy=3;
	setPos(x0,y0);
	setPixmap(scale_image->scaled(int(dx), int(dy)));
//	pixmap().rect().setTopLeft(QPoint(x0,y0));
	xx = x0;
	yy = y0;		
	from_node->setPos(x0,y0);
	emit position_changed(this);
	setBlock(false);
}


void PixmapItem::setToPoint( int x0, int y0 )
{
	setBlock(true);
	setPixmap(scale_image->scaled(int(x0-from_node->pos().x()),int(y0-from_node->pos().y())));
	to_node->setPos(x0,y0);
	emit position_changed(this);
	setBlock(false);
}
void PixmapItem::setTabs( QTabWidget *properties) 
{
//	conf = settings;
	PositionTab *ptab = new PositionTab(this);
	properties->addTab(ptab, tr("Position"));
	ImageTab *itab = new ImageTab(this);
	properties->addTab(itab, tr("Image"));
}

QVariant PixmapItem::itemChange(GraphicsItemChange change, const QVariant &value) {
	if(block()) {return QGraphicsPixmapItem::itemChange(change, value);}
//	if(block()) {return -1;}
	setBlock(true);
	if(change == ItemSelectedChange) {
		if(value.toBool()) {
			emit item_selected(this);
			from_node->show();
			to_node->show();
		} else {
			emit item_selected(0);
			from_node->hide();
			to_node->hide();
		}
	} else if (change == ItemPositionChange) {
		QRectF r = sceneBoundingRect();
		from_node->setPos(r.x(),r.y());
		to_node->setPos(r.x()+r.width(), r.y()+r.height());
		emit position_changed(this);
	} 
	setBlock(false);
	return QGraphicsPixmapItem::itemChange(change, value);
}
QDomElement PixmapItem::toXml(QDomDocument doc) {
	QDomElement l =doc.createElement("pixmap");
	QByteArray bytes;
	QBuffer buffer(&bytes);
	buffer.open(QIODevice::WriteOnly);
	orig_image->save(&buffer, "PNG");
	QDomCDATASection cd = doc.createCDATASection(bytes.toBase64 ());
	l.appendChild(cd);
	l.setAttribute("x",x());
	l.setAttribute("y",y());
	l.setAttribute("width",pixmap().rect().width());
	l.setAttribute("height",pixmap().rect().height());
	return l;
}