<?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: window.cpp Example File (script/context2d/window.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">window.cpp Example File</h1>
<span class="small-subtitle">script/context2d/window.cpp</span>
<!-- $$$script/context2d/window.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:
**
** "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
** "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 "window.h"</span>
<span class="preprocessor">#include "environment.h"</span>
<span class="preprocessor">#include "context2d.h"</span>
<span class="preprocessor">#include "qcontext2dcanvas.h"</span>
<span class="preprocessor">#include <QHBoxLayout></span>
<span class="preprocessor">#include <QListWidget></span>
<span class="preprocessor">#include <QDir></span>
<span class="preprocessor">#include <QMessageBox></span>
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="preprocessor">#include <QAction></span>
<span class="preprocessor">#include <QApplication></span>
<span class="preprocessor">#include <QMainWindow></span>
<span class="preprocessor">#include <QPushButton></span>
<span class="preprocessor">#include <QVBoxLayout></span>
<span class="preprocessor">#include <QScriptEngineDebugger></span>
<span class="preprocessor">#endif</span>
<span class="keyword">static</span> <span class="type"><a href="qstring.html">QString</a></span> scriptsDir()
{
<span class="keyword">if</span> (<span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>exists(<span class="string">"./scripts"</span>))
<span class="keyword">return</span> <span class="string">"./scripts"</span>;
<span class="keyword">return</span> <span class="string">":/scripts"</span>;
}
Window<span class="operator">::</span>Window(<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="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="operator">,</span> m_debugger(<span class="number">0</span>)<span class="operator">,</span> m_debugWindow(<span class="number">0</span>)
<span class="preprocessor">#endif</span>
{
m_env <span class="operator">=</span> <span class="keyword">new</span> Environment(<span class="keyword">this</span>);
<span class="type"><a href="qobject.html">QObject</a></span><span class="operator">::</span>connect(m_env<span class="operator">,</span> SIGNAL(scriptError(<span class="type"><a href="qscriptvalue.html">QScriptValue</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(reportScriptError(<span class="type"><a href="qscriptvalue.html">QScriptValue</a></span>)));
Context2D <span class="operator">*</span>context <span class="operator">=</span> <span class="keyword">new</span> Context2D(<span class="keyword">this</span>);
context<span class="operator">-</span><span class="operator">></span>setSize(<span class="number">150</span><span class="operator">,</span> <span class="number">150</span>);
m_canvas <span class="operator">=</span> <span class="keyword">new</span> QContext2DCanvas(context<span class="operator">,</span> m_env<span class="operator">,</span> <span class="keyword">this</span>);
m_canvas<span class="operator">-</span><span class="operator">></span>setFixedSize(context<span class="operator">-</span><span class="operator">></span>size());
m_canvas<span class="operator">-</span><span class="operator">></span>setObjectName(<span class="string">"tutorial"</span>);
m_env<span class="operator">-</span><span class="operator">></span>addCanvas(m_canvas);
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>vbox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>();
vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_canvas);
m_debugButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Run in Debugger"</span>));
connect(m_debugButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(runInDebugger()));
vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_debugButton);
<span class="preprocessor">#endif</span>
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>hbox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(<span class="keyword">this</span>);
m_view <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlistwidget.html">QListWidget</a></span>(<span class="keyword">this</span>);
m_view<span class="operator">-</span><span class="operator">></span>setEditTriggers(<span class="type"><a href="qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>NoEditTriggers);
hbox<span class="operator">-</span><span class="operator">></span>addWidget(m_view);
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
hbox<span class="operator">-</span><span class="operator">></span>addLayout(vbox);
<span class="preprocessor">#else</span>
hbox<span class="operator">-</span><span class="operator">></span>addWidget(m_canvas);
<span class="preprocessor">#endif</span>
<span class="type"><a href="qdir.html">QDir</a></span> dir(scriptsDir());
<span class="type"><a href="qfileinfo.html#QFileInfoList-typedef">QFileInfoList</a></span> entries <span class="operator">=</span> dir<span class="operator">.</span>entryInfoList(<span class="type"><a href="qstringlist.html">QStringList</a></span>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"*.js"</span>);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> entries<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i)
m_view<span class="operator">-</span><span class="operator">></span>addItem(entries<span class="operator">.</span>at(i)<span class="operator">.</span>fileName());
connect(m_view<span class="operator">,</span> SIGNAL(currentItemChanged(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span><span class="operator">*</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(selectScript(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span><span class="operator">*</span>)));
setWindowTitle(tr(<span class="string">"Context 2D"</span>));
}
<span class="type">void</span> Window<span class="operator">::</span>selectScript(<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item)
{
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>text();
runScript(fileName<span class="operator">,</span> <span class="comment">/*debug=*/</span><span class="keyword">false</span>);
}
<span class="type">void</span> Window<span class="operator">::</span>reportScriptError(<span class="keyword">const</span> <span class="type"><a href="qscriptvalue.html">QScriptValue</a></span> <span class="operator">&</span>error)
{
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Context 2D"</span>)<span class="operator">,</span> tr(<span class="string">"Line %0: %1"</span>)
<span class="operator">.</span>arg(error<span class="operator">.</span>property(<span class="string">"lineNumber"</span>)<span class="operator">.</span>toInt32())
<span class="operator">.</span>arg(error<span class="operator">.</span>toString()));
}
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="type">void</span> Window<span class="operator">::</span>runInDebugger()
{
<span class="type"><a href="qlistwidgetitem.html">QListWidgetItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> m_view<span class="operator">-</span><span class="operator">></span>currentItem();
<span class="keyword">if</span> (item) {
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>text();
runScript(fileName<span class="operator">,</span> <span class="comment">/*debug=*/</span><span class="keyword">true</span>);
}
}
<span class="preprocessor">#endif</span>
<span class="type">void</span> Window<span class="operator">::</span>runScript(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>fileName<span class="operator">,</span> <span class="type">bool</span> debug)
{
<span class="type"><a href="qfile.html">QFile</a></span> file(scriptsDir() <span class="operator">+</span> <span class="string">"/"</span> <span class="operator">+</span> fileName);
file<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly);
<span class="type"><a href="qstring.html">QString</a></span> contents <span class="operator">=</span> file<span class="operator">.</span>readAll();
file<span class="operator">.</span>close();
m_env<span class="operator">-</span><span class="operator">></span>reset();
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="keyword">if</span> (debug) {
<span class="keyword">if</span> (<span class="operator">!</span>m_debugger) {
m_debugger <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qscriptenginedebugger.html">QScriptEngineDebugger</a></span>(<span class="keyword">this</span>);
m_debugWindow <span class="operator">=</span> m_debugger<span class="operator">-</span><span class="operator">></span>standardWindow();
m_debugWindow<span class="operator">-</span><span class="operator">></span>setWindowModality(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ApplicationModal);
m_debugWindow<span class="operator">-</span><span class="operator">></span>resize(<span class="number">1280</span><span class="operator">,</span> <span class="number">704</span>);
}
m_debugger<span class="operator">-</span><span class="operator">></span>attachTo(m_env<span class="operator">-</span><span class="operator">></span>engine());
m_debugger<span class="operator">-</span><span class="operator">></span>action(<span class="type"><a href="qscriptenginedebugger.html">QScriptEngineDebugger</a></span><span class="operator">::</span>InterruptAction)<span class="operator">-</span><span class="operator">></span>trigger();
} <span class="keyword">else</span> {
<span class="keyword">if</span> (m_debugger)
m_debugger<span class="operator">-</span><span class="operator">></span>detach();
}
<span class="preprocessor">#else</span>
Q_UNUSED(debug);
<span class="preprocessor">#endif</span>
<span class="type"><a href="qscriptvalue.html">QScriptValue</a></span> ret <span class="operator">=</span> m_env<span class="operator">-</span><span class="operator">></span>evaluate(contents<span class="operator">,</span> fileName);
<span class="preprocessor">#ifndef QT_NO_SCRIPTTOOLS</span>
<span class="keyword">if</span> (m_debugWindow)
m_debugWindow<span class="operator">-</span><span class="operator">></span>hide();
<span class="preprocessor">#endif</span>
<span class="keyword">if</span> (ret<span class="operator">.</span>isError())
reportScriptError(ret);
}</pre>
</div>
<!-- @@@script/context2d/window.cpp -->
</div>
</div>
</div>
<div class="ft">
<span></span>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</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>
