Qt Reference Documentation

ZoomStrip.cpp Example File

demos/embedded/anomaly/src/ZoomStrip.cpp
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 #include "ZoomStrip.h"

 #include <QtCore>
 #include <QtGui>

 ZoomStrip::ZoomStrip(QWidget *parent)
     : QWidget(parent)
 {
     zoomInPixmap.load(":/images/list-add.png");
     zoomOutPixmap.load(":/images/list-remove.png");
 }

 QSize ZoomStrip::sizeHint() const
 {
     return minimumSizeHint();
 }

 QSize ZoomStrip::minimumSizeHint() const
 {
     return QSize(48, 96);
 }

 void ZoomStrip::mousePressEvent(QMouseEvent *event)
 {
     if (event->pos().y() < height() / 2)
         emit zoomInClicked();
     else
         emit zoomOutClicked();
 }

 void ZoomStrip::paintEvent(QPaintEvent *event)
 {
     int w = width();
     int s = (w - zoomInPixmap.width()) / 2;

     QPainter p(this);
     p.fillRect(event->rect(), QColor(128, 128, 128, 128));
     p.drawPixmap(s, s, zoomInPixmap);
     p.drawPixmap(s, s + w, zoomOutPixmap);
     p.end();
 }
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