|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# qcontext2dcanvas.h Example File
script/context2d/qcontext2dcanvas.h

     /****************************************************************************
     **
     ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef QCONTEXT2DCANVAS_H
     #define QCONTEXT2DCANVAS_H

     #include <qscriptengine.h>
     #include <qscriptcontext.h>
     #include <qscriptvalue.h>

     #include <QWidget>
     #include <QTimer>

     class QPaintEvent;
     class QResizeEvent;
     class QMouseEvent;

     class Context2D;

     class QContext2DCanvas : public QWidget
     {
         Q_OBJECT
     public:
         QContext2DCanvas(QWidget *parent=0);
         ~QContext2DCanvas();

         QScriptEngine *engine();

     public slots:
         void setScriptContents(const QString &txt);
         QObject *getContext(const QString &str) const;
         void setInterval(const QScriptValue &func,
                          qreal interval);
         void resize(int w, int h);
     signals:
         void error(const QString &error, int lineno);
     protected:
         virtual void paintEvent(QPaintEvent *e);
         virtual void mouseMoveEvent(QMouseEvent *e);
         virtual void mousePressEvent(QMouseEvent *e);
         virtual void mouseReleaseEvent(QMouseEvent *e);
         virtual void keyPressEvent(QKeyEvent *e);
         virtual void keyReleaseEvent(QKeyEvent *e);
         virtual void resizeEvent(QResizeEvent *e);

     private:
         QScriptEngine      m_engine;
         QString            m_script;

         Context2D         *m_context;
         QScriptValue       m_self;
         QScriptValue       m_doc;

         QScriptValue       m_intervalFunc;
         QTimer             m_timer;

         bool               m_firstRun;

         QScriptValue       m_keyDownHandler;
         QScriptValue       m_keyUpHandler;
         QScriptValue       m_mouseDownHandler;
         QScriptValue       m_mouseUpHandler;
         QScriptValue       m_mouseMoveHandler;
     };

     #endif