qt-creator/plugins/qmlprofiler/canvas/qdeclarativecanvas_p.h

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#ifndef QDECLARATIVECANVAS_P_H
#define QDECLARATIVECANVAS_P_H

#include <qdeclarativeitem.h>

#include "qdeclarativecontext2d_p.h"
#include "qdeclarativecanvastimer_p.h"

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)
class Canvas : public QDeclarativeItem
{
    Q_OBJECT

    Q_ENUMS(FillMode)
    Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged);
    Q_PROPERTY(int canvasWidth READ canvasWidth WRITE setCanvasWidth NOTIFY canvasWidthChanged);
    Q_PROPERTY(int canvasHeight READ canvasHeight WRITE setCanvasHeight NOTIFY canvasHeightChanged);
    Q_PROPERTY(FillMode fillMode READ fillMode WRITE setFillMode NOTIFY fillModeChanged)

public:
    Canvas(QDeclarativeItem *parent = 0);
    enum FillMode { Stretch, PreserveAspectFit, PreserveAspectCrop, Tile, TileVertically, TileHorizontally };


    void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
    void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
    void setCanvasWidth(int newWidth);
    int canvasWidth() {return m_canvasWidth;}

    void setCanvasHeight(int canvasHeight);
    int canvasHeight() {return m_canvasHeight;}

    void componentComplete();


public Q_SLOTS:
    Context2D *getContext(const QString & = QLatin1String("2d"));
    void requestPaint();

    FillMode fillMode() const;
    void setFillMode(FillMode);

    QColor color();
    void setColor(const QColor &);

    // Save current canvas to disk
    bool save(const QString& filename) const;

    // Timers
    void setInterval(const QScriptValue &handler, long timeout);
    void setTimeout(const QScriptValue &handler, long timeout);
    void clearInterval(const QScriptValue &handler);
    void clearTimeout(const QScriptValue &handler);

Q_SIGNALS:
    void fillModeChanged();
    void canvasWidthChanged();
    void canvasHeightChanged();
    void colorChanged();
    void init();
    void paint();

private:
    // Return canvas contents as a drawable image
    CanvasImage *toImage() const;
    Context2D *m_context;
    int m_canvasWidth;
    int m_canvasHeight;
    FillMode m_fillMode;
    QColor m_color;

    friend class Context2D;
};

QT_END_NAMESPACE

#endif //QDECLARATIVECANVAS_P_H