/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QCONTEXT2DCANVAS_H
#define QCONTEXT2DCANVAS_H

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

#include <QWidget>

QT_BEGIN_NAMESPACE
class QPaintEvent;
class QResizeEvent;
class QMouseEvent;
class QKeyEvent;
QT_END_NAMESPACE
class Environment;
class Context2D;

//! [0]
class QContext2DCanvas : public QWidget
{
    Q_OBJECT
public:
    QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent = 0);
    ~QContext2DCanvas();

    Context2D *context() const;
    void reset();

public slots:
    QScriptValue getContext(const QString &str);
    void resize(int width, int height);

    // EventTarget
    void addEventListener(const QString &type, const QScriptValue &listener,
                          bool useCapture);

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 slots:
    void contentsChanged(const QImage &image);
//! [0]

private:
    Context2D *m_context;
    Environment *m_env;
    QImage m_image;
};

#endif