lili/qt4-x11
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
master
qt4-x11/doc/html/opengl-grabber-mainwindow-cpp.html
lili 35a2a1d584 init
2025-08-24 20:55:26 +08:00

409 lines
30 KiB
HTML
Raw Permalink Blame History

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Qt 4.8: mainwindow.cpp Example File (opengl/grabber/mainwindow.cpp)</title>
<link rel="stylesheet" type="text/css" href="style/style.css" />
<script src="scripts/jquery.js" type="text/javascript"></script>
<script src="scripts/functions.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="style/superfish.css" />
<link rel="stylesheet" type="text/css" href="style/narrow.css" />
<!--[if IE]>
<meta name="MSSmartTagsPreventParsing" content="true">
<meta http-equiv="imagetoolbar" content="no">
<![endif]-->
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie6.css">
<![endif]-->
<!--[if IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie7.css">
<![endif]-->
<!--[if IE 8]>
<link rel="stylesheet" type="text/css" href="style/style_ie8.css">
<![endif]-->
<script src="scripts/superfish.js" type="text/javascript"></script>
<script src="scripts/narrow.js" type="text/javascript"></script>
</head>
<body class="" onload="CheckEmptyAndLoadList();">
<div class="header" id="qtdocheader">
<div class="content">
<div id="nav-logo">
<a href="index.html">Home</a></div>
<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
<div id="narrowsearch"></div>
<div id="nav-topright">
<ul>
<li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li>
<li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li>
<li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/">
DOC</a></li>
<li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li>
</ul>
</div>
<div id="shortCut">
<ul>
<li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li>
<li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS </a></li>
</ul>
</div>
<ul class="sf-menu" id="narrowmenu">
<li><a href="#">API Lookup</a>
<ul>
<li><a href="classes.html">Class index</a></li>
<li><a href="functions.html">Function index</a></li>
<li><a href="modules.html">Modules</a></li>
<li><a href="namespaces.html">Namespaces</a></li>
<li><a href="qtglobal.html">Global Declarations</a></li>
<li><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</li>
<li><a href="#">Qt Topics</a>
<ul>
<li><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li><a href="supported-platforms.html">Supported Platforms</a></li>
<li><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</li>
<li><a href="#">Examples</a>
<ul>
<li><a href="all-examples.html">Examples</a></li>
<li><a href="tutorials.html">Tutorials</a></li>
<li><a href="demos.html">Demos</a></li>
<li><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="wrapper">
<div class="hd">
<span></span>
</div>
<div class="bd group">
<div class="sidebar">
<div class="searchlabel">
Search index:</div>
<div class="search" id="sidebarsearch">
<form id="qtdocsearch" action="" onsubmit="return false;">
<fieldset>
<input type="text" name="searchstring" id="pageType" value="" />
<div id="resultdialog">
<a href="#" id="resultclose">Close</a>
<p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p>
<p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span>&nbsp;results:</p>
<ul id="resultlist" class="all">
</ul>
</div>
</fieldset>
</form>
</div>
<div class="box first bottombar" id="lookup">
<h2 title="API Lookup"><span></span>
API Lookup</h2>
<div id="list001" class="list">
<ul id="ul001" >
<li class="defaultLink"><a href="classes.html">Class index</a></li>
<li class="defaultLink"><a href="functions.html">Function index</a></li>
<li class="defaultLink"><a href="modules.html">Modules</a></li>
<li class="defaultLink"><a href="namespaces.html">Namespaces</a></li>
<li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li>
<li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</div>
</div>
<div class="box bottombar" id="topics">
<h2 title="Qt Topics"><span></span>
Qt Topics</h2>
<div id="list002" class="list">
<ul id="ul002" >
<li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li class="defaultLink"><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li>
<li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</div>
</div>
<div class="box" id="examples">
<h2 title="Examples"><span></span>
Examples</h2>
<div id="list003" class="list">
<ul id="ul003">
<li class="defaultLink"><a href="all-examples.html">Examples</a></li>
<li class="defaultLink"><a href="tutorials.html">Tutorials</a></li>
<li class="defaultLink"><a href="demos.html">Demos</a></li>
<li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</div>
</div>
</div>
<div class="wrap">
<div class="toolbar">
<div class="breadcrumb toolblock">
<ul>
<li class="first"><a href="index.html">Home</a></li>
<!-- Breadcrumbs go here -->
</ul>
</div>
<div class="toolbuttons toolblock">
<ul>
<li id="smallA" class="t_button">A</li>
<li id="medA" class="t_button active">A</li>
<li id="bigA" class="t_button">A</li>
<li id="print" class="t_button"><a href="javascript:this.print();">
<span>Print</span></a></li>
</ul>
</div>
</div>
<div class="content mainContent">
<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-subtitle">opengl/grabber/mainwindow.cpp</span>
<!-- $$$opengl/grabber/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &lt;QtOpenGL&gt;</span>
<span class="preprocessor">#include &quot;glwidget.h&quot;</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
MainWindow<span class="operator">::</span>MainWindow()
{
centralWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>;
setCentralWidget(centralWidget);
glWidget <span class="operator">=</span> <span class="keyword">new</span> GLWidget;
pixmapLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>;
glWidgetArea <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qscrollarea.html">QScrollArea</a></span>;
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setWidget(glWidget);
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setWidgetResizable(<span class="keyword">true</span>);
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setHorizontalScrollBarPolicy(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setVerticalScrollBarPolicy(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Ignored<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Ignored);
glWidgetArea<span class="operator">-</span><span class="operator">&gt;</span>setMinimumSize(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>);
pixmapLabelArea <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qscrollarea.html">QScrollArea</a></span>;
pixmapLabelArea<span class="operator">-</span><span class="operator">&gt;</span>setWidget(pixmapLabel);
pixmapLabelArea<span class="operator">-</span><span class="operator">&gt;</span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Ignored<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Ignored);
pixmapLabelArea<span class="operator">-</span><span class="operator">&gt;</span>setMinimumSize(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>);
xSlider <span class="operator">=</span> createSlider(SIGNAL(xRotationChanged(<span class="type">int</span>))<span class="operator">,</span>
SLOT(setXRotation(<span class="type">int</span>)));
ySlider <span class="operator">=</span> createSlider(SIGNAL(yRotationChanged(<span class="type">int</span>))<span class="operator">,</span>
SLOT(setYRotation(<span class="type">int</span>)));
zSlider <span class="operator">=</span> createSlider(SIGNAL(zRotationChanged(<span class="type">int</span>))<span class="operator">,</span>
SLOT(setZRotation(<span class="type">int</span>)));
createActions();
createMenus();
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>centralLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
centralLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(glWidgetArea<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
centralLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(pixmapLabelArea<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
centralLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(xSlider<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
centralLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(ySlider<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
centralLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(zSlider<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
centralWidget<span class="operator">-</span><span class="operator">&gt;</span>setLayout(centralLayout);
xSlider<span class="operator">-</span><span class="operator">&gt;</span>setValue(<span class="number">15</span> <span class="operator">*</span> <span class="number">16</span>);
ySlider<span class="operator">-</span><span class="operator">&gt;</span>setValue(<span class="number">345</span> <span class="operator">*</span> <span class="number">16</span>);
zSlider<span class="operator">-</span><span class="operator">&gt;</span>setValue(<span class="number">0</span> <span class="operator">*</span> <span class="number">16</span>);
setWindowTitle(tr(<span class="string">&quot;Grabber&quot;</span>));
resize(<span class="number">400</span><span class="operator">,</span> <span class="number">300</span>);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>renderIntoPixmap()
{
<span class="type"><a href="qsize.html">QSize</a></span> size <span class="operator">=</span> getSize();
<span class="keyword">if</span> (size<span class="operator">.</span>isValid()) {
<span class="type"><a href="qpixmap.html">QPixmap</a></span> pixmap <span class="operator">=</span> glWidget<span class="operator">-</span><span class="operator">&gt;</span>renderPixmap(size<span class="operator">.</span>width()<span class="operator">,</span> size<span class="operator">.</span>height());
setPixmap(pixmap);
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>grabFrameBuffer()
{
<span class="type"><a href="qimage.html">QImage</a></span> image <span class="operator">=</span> glWidget<span class="operator">-</span><span class="operator">&gt;</span>grabFrameBuffer();
setPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span><span class="operator">::</span>fromImage(image));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>clearPixmap()
{
setPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>about()
{
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;About Grabber&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The &lt;b&gt;Grabber&lt;/b&gt; example demonstrates two approaches for &quot;</span>
<span class="string">&quot;rendering OpenGL into a Qt pixmap.&quot;</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createActions()
{
renderIntoPixmapAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Render into Pixmap...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
renderIntoPixmapAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+R&quot;</span>));
connect(renderIntoPixmapAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(renderIntoPixmap()));
grabFrameBufferAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Grab Frame Buffer&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
grabFrameBufferAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+G&quot;</span>));
connect(grabFrameBufferAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(grabFrameBuffer()));
clearPixmapAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Clear Pixmap&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
clearPixmapAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+L&quot;</span>));
connect(clearPixmapAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(clearPixmap()));
exitAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;E&amp;xit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
exitAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit);
connect(exitAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close()));
aboutAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;About&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(about()));
aboutQtAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;About &amp;Qt&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutQtAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(aboutQt()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createMenus()
{
fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;File&quot;</span>));
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(renderIntoPixmapAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(grabFrameBufferAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(clearPixmapAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(exitAct);
helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Help&quot;</span>));
helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutAct);
helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutQtAct);
}
<span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>MainWindow<span class="operator">::</span>createSlider(<span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>changedSignal<span class="operator">,</span>
<span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>setterSlot)
{
<span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>slider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal);
slider<span class="operator">-</span><span class="operator">&gt;</span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">360</span> <span class="operator">*</span> <span class="number">16</span>);
slider<span class="operator">-</span><span class="operator">&gt;</span>setSingleStep(<span class="number">16</span>);
slider<span class="operator">-</span><span class="operator">&gt;</span>setPageStep(<span class="number">15</span> <span class="operator">*</span> <span class="number">16</span>);
slider<span class="operator">-</span><span class="operator">&gt;</span>setTickInterval(<span class="number">15</span> <span class="operator">*</span> <span class="number">16</span>);
slider<span class="operator">-</span><span class="operator">&gt;</span>setTickPosition(<span class="type"><a href="qslider.html">QSlider</a></span><span class="operator">::</span>TicksRight);
connect(slider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> glWidget<span class="operator">,</span> setterSlot);
connect(glWidget<span class="operator">,</span> changedSignal<span class="operator">,</span> slider<span class="operator">,</span> SLOT(setValue(<span class="type">int</span>)));
<span class="keyword">return</span> slider;
}
<span class="type">void</span> MainWindow<span class="operator">::</span>setPixmap(<span class="keyword">const</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span> <span class="operator">&amp;</span>pixmap)
{
pixmapLabel<span class="operator">-</span><span class="operator">&gt;</span>setPixmap(pixmap);
<span class="type"><a href="qsize.html">QSize</a></span> size <span class="operator">=</span> pixmap<span class="operator">.</span>size();
<span class="keyword">if</span> (size <span class="operator">-</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">1</span><span class="operator">,</span> <span class="number">0</span>) <span class="operator">=</span><span class="operator">=</span> pixmapLabelArea<span class="operator">-</span><span class="operator">&gt;</span>maximumViewportSize())
size <span class="operator">-</span><span class="operator">=</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);
pixmapLabel<span class="operator">-</span><span class="operator">&gt;</span>resize(size);
}
<span class="type"><a href="qsize.html">QSize</a></span> MainWindow<span class="operator">::</span>getSize()
{
<span class="type">bool</span> ok;
<span class="type"><a href="qstring.html">QString</a></span> text <span class="operator">=</span> <span class="type"><a href="qinputdialog.html">QInputDialog</a></span><span class="operator">::</span>getText(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;Grabber&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Enter pixmap size:&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qlineedit.html">QLineEdit</a></span><span class="operator">::</span>Normal<span class="operator">,</span>
tr(<span class="string">&quot;%1 x %2&quot;</span>)<span class="operator">.</span>arg(glWidget<span class="operator">-</span><span class="operator">&gt;</span>width())
<span class="operator">.</span>arg(glWidget<span class="operator">-</span><span class="operator">&gt;</span>height())<span class="operator">,</span>
<span class="operator">&amp;</span>ok);
<span class="keyword">if</span> (<span class="operator">!</span>ok)
<span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>();
<span class="type"><a href="qregexp.html">QRegExp</a></span> regExp(tr(<span class="string">&quot;([0-9]+) *x *([0-9]+)&quot;</span>));
<span class="keyword">if</span> (regExp<span class="operator">.</span>exactMatch(text)) {
<span class="type">int</span> width <span class="operator">=</span> regExp<span class="operator">.</span>cap(<span class="number">1</span>)<span class="operator">.</span>toInt();
<span class="type">int</span> height <span class="operator">=</span> regExp<span class="operator">.</span>cap(<span class="number">2</span>)<span class="operator">.</span>toInt();
<span class="keyword">if</span> (width <span class="operator">&gt;</span> <span class="number">0</span> <span class="operator">&amp;</span><span class="operator">&amp;</span> width <span class="operator">&lt;</span> <span class="number">2048</span> <span class="operator">&amp;</span><span class="operator">&amp;</span> height <span class="operator">&gt;</span> <span class="number">0</span> <span class="operator">&amp;</span><span class="operator">&amp;</span> height <span class="operator">&lt;</span> <span class="number">2048</span>)
<span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(width<span class="operator">,</span> height);
}
<span class="keyword">return</span> glWidget<span class="operator">-</span><span class="operator">&gt;</span>size();
}</pre>
</div>
<!-- @@@opengl/grabber/mainwindow.cpp -->
</div>
</div>
</div>
<div class="ft">
<span></span>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">&copy;</acronym> 2015 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.</p>
<br />
<p>
The documentation provided herein is licensed under the terms of the
<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
License version 1.3</a> as published by the Free Software Foundation.</p>
<p>
Documentation sources may be obtained from <a href="http://www.qt-project.org">
www.qt-project.org</a>.</p>
<br />
<p>
Qt and respective logos are trademarks of The Qt Company Ltd
in Finland and/or other countries worldwide. All other trademarks are property
of their respective owners. <a title="Privacy Policy"
href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
</div>
<script src="scripts/functions.js" type="text/javascript"></script>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink