<?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: environment.h Example File (script/context2d/environment.h)</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"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">environment.h Example File<br /><span class="small-subtitle">script/context2d/environment.h</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 examples 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> #ifndef ENVIRONMENT_H #define ENVIRONMENT_H #include <qobject.h> #include <qlist.h> #include <qhash.h> #include <QTimerEvent> #include <QMouseEvent> #include <QKeyEvent> #include <QScriptEngine> #include <QScriptable> class QContext2DCanvas; class Environment : public QObject { Q_OBJECT Q_PROPERTY(QScriptValue document READ document) public: Environment(QObject *parent = 0); ~Environment(); QScriptValue document() const; void addCanvas(QContext2DCanvas *canvas); QContext2DCanvas *canvasByName(const QString &name) const; QList<QContext2DCanvas*> canvases() const; QScriptValue evaluate(const QString &code, const QString &fileName = QString()); QScriptValue toWrapper(QObject *object); void handleEvent(QContext2DCanvas *canvas, QMouseEvent *e); void handleEvent(QContext2DCanvas *canvas, QKeyEvent *e); void reset(); QScriptEngine *engine() const; public slots: int setInterval(const QScriptValue &expression, int delay); void clearInterval(int timerId); int setTimeout(const QScriptValue &expression, int delay); void clearTimeout(int timerId); signals: void scriptError(const QScriptValue &error); protected: void timerEvent(QTimerEvent *event); private: QScriptValue eventHandler(QContext2DCanvas *canvas, const QString &type, QScriptValue *who); QScriptValue newFakeDomEvent(const QString &type, const QScriptValue &target); void maybeEmitScriptError(); QScriptEngine *m_engine; QScriptValue m_originalGlobalObject; QScriptValue m_document; QList<QContext2DCanvas*> m_canvases; QHash<int, QScriptValue> m_intervalHash; QHash<int, QScriptValue> m_timeoutHash; }; class Document : public QObject { Q_OBJECT public: Document(Environment *env); ~Document(); public slots: QScriptValue getElementById(const QString &id) const; QScriptValue getElementsByTagName(const QString &name) const; <span class="comment">// EventTarget</span> void addEventListener(const QString &type, const QScriptValue &listener, bool useCapture); }; class CanvasGradientPrototype : public QObject, public QScriptable { Q_OBJECT protected: CanvasGradientPrototype(QObject *parent = 0); public: static void setup(QScriptEngine *engine); public slots: void addColorStop(qreal offset, const QString &color); }; #endif</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 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>