1 #include <QPainter>

     2 #include <QPen>

     3 #include "pixlabel.h"

     4 

     5 PixLabel::PixLabel()

     6 		: QLabel(0)

     7 {

     8 

     9 }

    10 

    11 void PixLabel::paintEvent(QPaintEvent * event)

    12 {

    13 	QLabel::paintEvent(event);

    14 	QPainter p(this);

    15 

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

    17 

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

    19 	p.drawRects(rects.toVector());

    20 

    21 	if (rects.size())

    22 	{

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

    24 		p.drawRect(rects.last());

    25 	}

    26 }

    27 

    28 void PixLabel::mousePressEvent(QMouseEvent * e)

    29 {

    30 	if (!rects.empty())

    31 	{

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

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

    34 		else

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

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

    37 		repaint();

    38 	}

    39 }

    40 

    41 void PixLabel::AddRect()

    42 {

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

    44 	repaint();

    45 }