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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWINDOWSURFACE_P_H
#define QWINDOWSURFACE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/qwidget.h>
QT_BEGIN_NAMESPACE
class QPaintDevice;
class QRegion;
class QRect;
class QPoint;
class QImage;
class QWindowSurfacePrivate;
class QPlatformWindow;
class Q_GUI_EXPORT QWindowSurface
{
public:
enum WindowSurfaceFeature {
PartialUpdates = 0x00000001, // Supports doing partial updates.
PreservedContents = 0x00000002, // Supports doing flush without first doing a repaint.
StaticContents = 0x00000004, // Supports having static content regions when being resized.
AllFeatures = 0xffffffff // For convenience
};
Q_DECLARE_FLAGS(WindowSurfaceFeatures, WindowSurfaceFeature)
QWindowSurface(QWidget *window, bool setDefaultSurface = true);
virtual ~QWindowSurface();
QWidget *window() const;
virtual QPaintDevice *paintDevice() = 0;
// 'widget' can be a child widget, in which case 'region' is in child widget coordinates and
// offset is the (child) widget's offset in relation to the window surface. On QWS, 'offset'
// can be larger than just the offset from the top-level widget as there may also be window
// decorations which are painted into the window surface.
virtual void flush(QWidget *widget, const QRegion ®ion, const QPoint &offset) = 0;
#if !defined(Q_WS_QPA)
virtual void setGeometry(const QRect &rect);
QRect geometry() const;
#else
virtual void resize(const QSize &size);
QSize size() const;
inline QRect geometry() const { return QRect(QPoint(), size()); } //### cleanup before Qt 5
#endif
virtual bool scroll(const QRegion &area, int dx, int dy);
virtual void beginPaint(const QRegion &);
virtual void endPaint(const QRegion &);
virtual QImage* buffer(const QWidget *widget);
virtual QPixmap grabWidget(const QWidget *widget, const QRect& rectangle = QRect()) const;
virtual QPoint offset(const QWidget *widget) const;
inline QRect rect(const QWidget *widget) const;
bool hasFeature(WindowSurfaceFeature feature) const;
virtual WindowSurfaceFeatures features() const;
void setStaticContents(const QRegion ®ion);
QRegion staticContents() const;
protected:
bool hasStaticContents() const;
private:
QWindowSurfacePrivate *d_ptr;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QWindowSurface::WindowSurfaceFeatures)
inline QRect QWindowSurface::rect(const QWidget *widget) const
{
return widget->rect().translated(offset(widget));
}
inline bool QWindowSurface::hasFeature(WindowSurfaceFeature feature) const
{
return (features() & feature) != 0;
}
QT_END_NAMESPACE
#endif // QWINDOWSURFACE_P_H
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