qcontext2dcanvas.h Example File

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#ifndef QCONTEXT2DCANVAS_H
#define QCONTEXT2DCANVAS_H

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

#include <QWidget>

class QPaintEvent;
class QResizeEvent;
class QMouseEvent;
class QKeyEvent;

class Environment;
class Context2D;

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);

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

#endif