<?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: testwidget.cpp Example File (widgets/elidedlabel/testwidget.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 & 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> 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 & 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">testwidget.cpp Example File</h1> <span class="small-subtitle">widgets/elidedlabel/testwidget.cpp</span> <!-- $$$widgets/elidedlabel/testwidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "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 Digia Plc and its Subsidiary(-ies) 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 ** "AS IS" 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "testwidget.h"</span> <span class="preprocessor">#include "elidedlabel.h"</span> <span class="preprocessor">#include <QLabel></span> <span class="preprocessor">#include <QPushButton></span> <span class="preprocessor">#include <QSizePolicy></span> <span class="preprocessor">#include <QGridLayout></span> TestWidget<span class="operator">::</span>TestWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent): <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> romeo <span class="operator">=</span> tr( <span class="string">"But soft, what light through yonder window breaks? / "</span> <span class="string">"It is the east, and Juliet is the sun. / "</span> <span class="string">"Arise, fair sun, and kill the envious moon, / "</span> <span class="string">"Who is already sick and pale with grief / "</span> <span class="string">"That thou, her maid, art far more fair than she."</span> ); <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> macbeth <span class="operator">=</span> tr( <span class="string">"To-morrow, and to-morrow, and to-morrow, / "</span> <span class="string">"Creeps in this petty pace from day to day, / "</span> <span class="string">"To the last syllable of recorded time; / "</span> <span class="string">"And all our yesterdays have lighted fools / "</span> <span class="string">"The way to dusty death. Out, out, brief candle! / "</span> <span class="string">"Life's but a walking shadow, a poor player, / "</span> <span class="string">"That struts and frets his hour upon the stage, / "</span> <span class="string">"And then is heard no more. It is a tale / "</span> <span class="string">"Told by an idiot, full of sound and fury, / "</span> <span class="string">"Signifying nothing."</span> ); <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> harry <span class="operator">=</span> tr(<span class="string">"Feeling lucky, punk?"</span>); textSamples <span class="operator"><</span><span class="operator"><</span> romeo <span class="operator"><</span><span class="operator"><</span> macbeth <span class="operator"><</span><span class="operator"><</span> harry; sampleIndex <span class="operator">=</span> <span class="number">0</span>; elidedText <span class="operator">=</span> <span class="keyword">new</span> ElidedLabel(textSamples<span class="operator">[</span>sampleIndex<span class="operator">]</span><span class="operator">,</span> <span class="keyword">this</span>); elidedText<span class="operator">-</span><span class="operator">></span>setFrameStyle(<span class="type"><a href="qframe.html">QFrame</a></span><span class="operator">::</span>Box); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>switchButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Switch text"</span>)); connect(switchButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(switchText())); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>exitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Exit"</span>)); connect(exitButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close())); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>label <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Elided"</span>)); label<span class="operator">-</span><span class="operator">></span>setVisible(elidedText<span class="operator">-</span><span class="operator">></span>isElided()); connect(elidedText<span class="operator">,</span> SIGNAL(elisionChanged(<span class="type">bool</span>))<span class="operator">,</span> label<span class="operator">,</span> SLOT(setVisible(<span class="type">bool</span>))); widthSlider <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); widthSlider<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); connect(widthSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(onWidthChanged(<span class="type">int</span>))); heightSlider <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>Vertical); heightSlider<span class="operator">-</span><span class="operator">></span>setInvertedAppearance(<span class="keyword">true</span>); heightSlider<span class="operator">-</span><span class="operator">></span>setMinimum(<span class="number">0</span>); connect(heightSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(onHeightChanged(<span class="type">int</span>))); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>(); layout<span class="operator">-</span><span class="operator">></span>addWidget(label<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignCenter); layout<span class="operator">-</span><span class="operator">></span>addWidget(switchButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">2</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(exitButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">3</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(widthSlider<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">3</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(heightSlider<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(elidedText<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignTop <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignLeft); setLayout(layout); <span class="preprocessor">#ifdef Q_WS_MAEMO_5</span> setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_Maemo5AutoOrientation<span class="operator">,</span> <span class="keyword">true</span>); <span class="preprocessor">#endif</span> } <span class="type">void</span> TestWidget<span class="operator">::</span>resizeEvent(<span class="type"><a href="qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span>event) { Q_UNUSED(event) <span class="type">int</span> maxWidth <span class="operator">=</span> widthSlider<span class="operator">-</span><span class="operator">></span>width(); widthSlider<span class="operator">-</span><span class="operator">></span>setMaximum(maxWidth); widthSlider<span class="operator">-</span><span class="operator">></span>setValue(maxWidth <span class="operator">/</span> <span class="number">2</span>); <span class="type">int</span> maxHeight <span class="operator">=</span> heightSlider<span class="operator">-</span><span class="operator">></span>height(); heightSlider<span class="operator">-</span><span class="operator">></span>setMaximum(maxHeight); heightSlider<span class="operator">-</span><span class="operator">></span>setValue(maxHeight <span class="operator">/</span> <span class="number">2</span>); elidedText<span class="operator">-</span><span class="operator">></span>setFixedSize(widthSlider<span class="operator">-</span><span class="operator">></span>value()<span class="operator">,</span> heightSlider<span class="operator">-</span><span class="operator">></span>value()); } <span class="type">void</span> TestWidget<span class="operator">::</span>switchText() { sampleIndex <span class="operator">=</span> (sampleIndex <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> textSamples<span class="operator">.</span>size(); elidedText<span class="operator">-</span><span class="operator">></span>setText(textSamples<span class="operator">.</span>at(sampleIndex)); } <span class="type">void</span> TestWidget<span class="operator">::</span>onWidthChanged(<span class="type">int</span> width) { elidedText<span class="operator">-</span><span class="operator">></span>setFixedWidth(width); } <span class="type">void</span> TestWidget<span class="operator">::</span>onHeightChanged(<span class="type">int</span> height) { elidedText<span class="operator">-</span><span class="operator">></span>setFixedHeight(height); }</pre> </div> <!-- @@@widgets/elidedlabel/testwidget.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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> Digia, Qt and their respective logos are trademarks of Digia Plc 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>