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