qpaintdevicewindow.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QPAINTDEVICEWINDOW_H
#define QPAINTDEVICEWINDOW_H
 
#include <QtGui/qtguiglobal.h>
#include <QtGui/QWindow>
#include <QtGui/QPaintDevice>
 
QT_BEGIN_NAMESPACE
 
class QPaintDeviceWindowPrivate;
class QPaintEvent;
 
class Q_GUI_EXPORT QPaintDeviceWindow : public QWindow, public QPaintDevice
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QPaintDeviceWindow)
 
public:
    void update(const QRect &rect);
    void update(const QRegion &region);
 
    using QWindow::width;
    using QWindow::height;
    using QWindow::devicePixelRatio;
 
public Q_SLOTS:
    void update();
 
protected:
    void exposeEvent(QExposeEvent *) override;
    void paintEvent(QPaintEvent *event) override;
 
    int metric(PaintDeviceMetric metric) const override;
    bool event(QEvent *event) override;
 
    QPaintDeviceWindow(QPaintDeviceWindowPrivate &dd, QWindow *parent);
 
private:
    QPaintEngine *paintEngine() const override;
    Q_DISABLE_COPY(QPaintDeviceWindow)
};
 
QT_END_NAMESPACE
 
#endif