Qt Reference Documentation

ControlStrip.cpp Example File

demos/embedded/anomaly/src/ControlStrip.cpp
 /****************************************************************************
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 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
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 ** This file is part of the demos of the Qt Toolkit.
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 ** Alternatively, this file may be used under the terms of the GNU Lesser
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 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
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 #include "ControlStrip.h"

 #include <QtCore>
 #include <QtGui>

 ControlStrip::ControlStrip(QWidget *parent)
     : QWidget(parent)
 {
     menuPixmap.load(":/images/edit-find.png");
     backPixmap.load(":/images/go-previous.png");
     forwardPixmap.load(":/images/go-next.png");
     closePixmap.load(":/images/button-close.png");
 }

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

 QSize ControlStrip::minimumSizeHint() const
 {
     return QSize(320, 48);
 }

 void ControlStrip::mousePressEvent(QMouseEvent *event)
 {
     int h = height();
     int spacing = qMin(h, (width() - h * 4) / 3);
     int x = event->pos().x();

     if (x < h) {
         emit menuClicked();
         event->accept();
         return;
     }

     if (x > width() - h) {
         emit closeClicked();
         event->accept();
         return;
     }

     if ((x < width() - (h + spacing)) && (x > width() - (h * 2 + spacing))) {
         emit forwardClicked();
         event->accept();
         return;
     }

     if ((x < width() - (h * 2 + spacing * 2)) && (x > width() - (h * 3 + spacing * 2))) {
         emit backClicked();
         event->accept();
         return;
     }
 }

 void ControlStrip::paintEvent(QPaintEvent *event)
 {
     int h = height();
     int spacing = qMin(h, (width() - h * 4) / 3);
     int s = (height() - menuPixmap.height()) / 2;

     QPainter p(this);
     p.fillRect(event->rect(), QColor(32, 32, 32, 192));
     p.setCompositionMode(QPainter::CompositionMode_SourceOver);
     p.drawPixmap(s, s, menuPixmap);
     p.drawPixmap(width() - h + s, s, closePixmap);
     p.drawPixmap(width() - (h * 2 + spacing) + s, s, forwardPixmap);
     p.drawPixmap(width() - (h * 3 + spacing * 2) + s, s, backPixmap);

     p.end();
 }
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