/*
 * Copyright (c) 2012 Mateusz Piękos
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

#include "FreehandLineItem.h"


namespace Swift {
	FreehandLineItem::FreehandLineItem(QGraphicsItem* parent) : QGraphicsItem(parent) {
	}

	QRectF FreehandLineItem::boundingRect() const
	{
		return boundRect;
	}

	void FreehandLineItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
	{
		painter->setPen(pen_);
		if (points_.size() > 0) {
			QVector<QPointF>::const_iterator it = points_.begin();
			QPointF previous = *it;
			++it;
			for (; it != points_.end(); ++it) {
				painter->drawLine(previous, *it);
				previous = *it;
			}
		}
	}

	void FreehandLineItem::setStartPoint(QPointF point)
	{
		points_.clear();
		points_.append(point);
		QRectF rect(point, point);
		prepareGeometryChange();
		boundRect = rect;
	}

	void FreehandLineItem::lineTo(QPointF point)
	{
		qreal x1, x2, y1, y2;
		x1 = points_.last().x();
		x2 = point.x();
		y1 = points_.last().y();
		y2 = point.y();
		if (x1 > x2) {
			qreal temp = x1;
			x1 = x2;
			x2 = temp;
		}
		if (y1 > y2) {
			qreal temp = y1;
			y1 = y2;
			y2 = temp;
		}
		QRectF rect(x1-1, y1-1, x2+1-x1, y2+1-y1);

		points_.append(point);

		prepareGeometryChange();
		boundRect |= rect;
	}

	bool FreehandLineItem::collidesWithPath(const QPainterPath& path, Qt::ItemSelectionMode /*mode*/) const
	{
		QVector<QPointF>::const_iterator it;
		QSizeF size(1,1);
		for (it = points_.begin(); it != points_.end(); ++it)	{
			if (path.intersects(QRectF(*it, size))) { 
				return true;
			}
		}
		return false;
	}

	void FreehandLineItem::setPen(const QPen& pen)
	{
		pen_ = pen;
		update(boundRect);
	}

	QPen FreehandLineItem::pen() const
	{
		return pen_;
	}

	const QVector<QPointF>& FreehandLineItem::points() const {
		return points_;
	}

	int FreehandLineItem::type() const {
		return Type;
	}
}