Qt 4.8: ZoomStrip.cpp Example File (demos/embedded/anomaly/src/ZoomStrip.cpp)

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# ZoomStrip.cpp Example File

demos/embedded/anomaly/src/ZoomStrip.cpp

     /****************************************************************************
     **
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     ** Contact: http://www.qt-project.org/legal
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     ** This file is part of the demos of the Qt Toolkit.
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     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
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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();
     }