#include <QPainter>

#include <QPen>

#include "pixlabel.h"

PixLabel::PixLabel()

		: QLabel(0)

{

}

void PixLabel::paintEvent(QPaintEvent * event)

{

	QLabel::paintEvent(event);

	QPainter p(this);

	p.fillRect(QRect(0, 0, 1024, 512), QBrush(Qt::black));

	if (rects.size())

	{

		p.setPen(QPen(Qt::lightGray));

		QVector<QPoint> centers;

		for(QList<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it)

			centers.push_back((*it).center());

		p.drawPolyline(QPolygon(centers));

		p.setPen(QPen(Qt::white));

		p.drawRects(rects.toVector());

		p.setPen(QPen(Qt::yellow));

		p.drawRect(rects.last());

	}

}

void PixLabel::mousePressEvent(QMouseEvent * e)

{

	if (!rects.empty())

	{

		if (e->button() == Qt::LeftButton)

			rects[rects.size() - 1].moveTopLeft(QPoint(e->x(), e->y()));

		else

		if (e->button() == Qt::RightButton)

			rects[rects.size() - 1].setBottomRight(QPoint(e->x(), e->y()));

		repaint();

	}

}

void PixLabel::AddRect()

{

	rects.push_back(QRect(0, 0, 1, 1));

	repaint();

}