Sophie: qt4-doc-4:4.6.3-0.2mdv2010.2 i586

qt4-doc-4.6.3-0.2mdv2010.2.i586.rpm

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html
    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>Qt 4.6: slideshow.cpp Example File (demos/embedded/fluidlauncher/slideshow.cpp)</title>
  <link href="classic.css" rel="stylesheet" type="text/css" />
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td>
<td width="1">&nbsp;&nbsp;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a>&nbsp;&middot; <a href="classes.html"><font color="#004faf">All&nbsp;Classes</font></a>&nbsp;&middot; <a href="functions.html"><font color="#004faf">All&nbsp;Functions</font></a>&nbsp;&middot; <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">slideshow.cpp Example File<br /><span class="small-subtitle">demos/embedded/fluidlauncher/slideshow.cpp</span>
</h1>
<pre><span class="comment"> /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** 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
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/</span>

 #include &lt;QBasicTimer&gt;
 #include &lt;QList&gt;
 #include &lt;QImage&gt;
 #include &lt;QDir&gt;
 #include &lt;QPainter&gt;
 #include &lt;QPaintEvent&gt;

 #include &lt;QDebug&gt;

 #include &quot;slideshow.h&quot;

 class SlideShowPrivate
 {
 public:
     SlideShowPrivate();

     int currentSlide;
     int slideInterval;
     QBasicTimer interSlideTimer;
     QStringList imagePaths;

     void showNextSlide();
 };

 SlideShowPrivate::SlideShowPrivate()
 {
     currentSlide = 0;
     slideInterval = 10000; <span class="comment">// Default to 10 sec interval</span>
 }

 void SlideShowPrivate::showNextSlide()
 {
     currentSlide++;
     if (currentSlide &gt;= imagePaths.size())
       currentSlide = 0;
 }

 SlideShow::SlideShow(QWidget* parent) :
     QWidget(parent)
 {
     d = new SlideShowPrivate;

     setAttribute(Qt::WA_StaticContents, true);
     setAttribute(Qt::WA_OpaquePaintEvent, true);
     setAttribute(Qt::WA_NoSystemBackground, true);

     setMouseTracking(true);
 }

 SlideShow::~SlideShow()
 {
     delete d;
 }

 void SlideShow::addImageDir(QString dirName)
 {
     QDir dir(dirName);

     QStringList fileNames = dir.entryList(QDir::Files | QDir::Readable, QDir::Name);

     for (int i=0; i&lt;fileNames.count(); i++)
         d-&gt;imagePaths &lt;&lt; dir.absoluteFilePath(fileNames[i]);
 }

 void SlideShow::addImage(QString filename)
 {
     d-&gt;imagePaths &lt;&lt; filename;
 }

 void SlideShow::clearImages()
 {
     d-&gt;imagePaths.clear();
 }

 void SlideShow::startShow()
 {
     d-&gt;interSlideTimer.start(d-&gt;slideInterval, this);
     d-&gt;showNextSlide();
     update();
 }

 void SlideShow::stopShow()
 {
     d-&gt;interSlideTimer.stop();
 }

 int SlideShow::slideInterval()
 {
     return d-&gt;slideInterval;
 }

 void SlideShow::setSlideInterval(int val)
 {
     d-&gt;slideInterval = val;
 }

 void SlideShow::timerEvent(QTimerEvent* event)
 {
     Q_UNUSED(event);
     d-&gt;showNextSlide();
     update();
 }

 void SlideShow::paintEvent(QPaintEvent *event)
 {
     QPainter painter(this);
     painter.setRenderHint(QPainter::Antialiasing, false);

     if (d-&gt;imagePaths.size() &gt; 0) {
         QPixmap slide = QPixmap(d-&gt;imagePaths[d-&gt;currentSlide]);
         QSize slideSize = slide.size();
         QSize scaledSize = QSize(qMin(slideSize.width(), size().width()),
             qMin(slideSize.height(), size().height()));
         if (slideSize != scaledSize)
             slide = slide.scaled(scaledSize, Qt::KeepAspectRatio);

         QRect pixmapRect(qMax( (size().width() - slide.width())/2, 0),
                          qMax( (size().height() - slide.height())/2, 0),
                          slide.width(),
                          slide.height());

         if (pixmapRect.top() &gt; 0) {
             <span class="comment">// Fill in top &amp; bottom rectangles:</span>
             painter.fillRect(0, 0, size().width(), pixmapRect.top(), Qt::black);
             painter.fillRect(0, pixmapRect.bottom(), size().width(), size().height(), Qt::black);
         }

         if (pixmapRect.left() &gt; 0) {
             <span class="comment">// Fill in left &amp; right rectangles:</span>
             painter.fillRect(0, 0, pixmapRect.left(), size().height(), Qt::black);
             painter.fillRect(pixmapRect.right(), 0, size().width(), size().height(), Qt::black);
         }

         painter.drawPixmap(pixmapRect, slide);

     } else
         painter.fillRect(event-&gt;rect(), Qt::black);
 }

 void SlideShow::keyPressEvent(QKeyEvent* event)
 {
     Q_UNUSED(event);
     emit inputReceived();
 }

 void SlideShow::mouseMoveEvent(QMouseEvent* event)
 {
     Q_UNUSED(event);
     emit inputReceived();
 }

 void SlideShow::mousePressEvent(QMouseEvent* event)
 {
     Q_UNUSED(event);
     emit inputReceived();
 }

 void SlideShow::mouseReleaseEvent(QMouseEvent* event)
 {
     Q_UNUSED(event);
     emit inputReceived();
 }

 void SlideShow::showEvent(QShowEvent * event )
 {
     Q_UNUSED(event);
 #ifndef QT_NO_CURSOR
     setCursor(Qt::BlankCursor);
 #endif
 }</pre>
<p /><address><hr /><div align="center">
<table width="100%" cellspacing="0" border="0"><tr class="address">
<td width="40%" align="left">Copyright &copy; 2010 Nokia Corporation and/or its subsidiary(-ies)</td>
<td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="40%" align="right"><div align="right">Qt 4.6.3</div></td>
</tr></table></div></address></body>
</html>