qt5base-lts/examples/widgets/painting/painterpaths/renderarea.h

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#ifndef RENDERAREA_H
#define RENDERAREA_H

#include <QPainterPath>
#include <QWidget>

//! [0]
class RenderArea : public QWidget
{
    Q_OBJECT

public:
    explicit RenderArea(const QPainterPath &path, QWidget *parent = 0);

    QSize minimumSizeHint() const Q_DECL_OVERRIDE;
    QSize sizeHint() const Q_DECL_OVERRIDE;

public slots:
    void setFillRule(Qt::FillRule rule);
    void setFillGradient(const QColor &color1, const QColor &color2);
    void setPenWidth(int width);
    void setPenColor(const QColor &color);
    void setRotationAngle(int degrees);

protected:
    void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
//! [0]

//! [1]
private:
    QPainterPath path;
    QColor fillColor1;
    QColor fillColor2;
    int penWidth;
    QColor penColor;
    int rotationAngle;
};
//! [1]

#endif // RENDERAREA_H