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123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2020 Ivailo Monev
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**
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** This file is part of the QtGui module of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QWINDOWSURFACE_P_H
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#define QWINDOWSURFACE_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Katie API. It exists for the convenience
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// of other Qt classes. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtGui/qwidget.h>
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QT_BEGIN_NAMESPACE
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class QPaintDevice;
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class QRegion;
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class QRect;
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class QPoint;
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class QImage;
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class QWindowSurfacePrivate;
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class Q_GUI_EXPORT QWindowSurface
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{
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public:
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enum WindowSurfaceFeature {
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PartialUpdates = 0x00000001, // Supports doing partial updates.
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PreservedContents = 0x00000002, // Supports doing flush without first doing a repaint.
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StaticContents = 0x00000004, // Supports having static content regions when being resized.
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AllFeatures = 0xffffffff // For convenience
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};
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Q_DECLARE_FLAGS(WindowSurfaceFeatures, WindowSurfaceFeature)
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QWindowSurface(QWidget *window, bool setDefaultSurface = true);
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virtual ~QWindowSurface();
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QWidget *window() const;
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virtual QPaintDevice *paintDevice() = 0;
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// 'widget' can be a child widget, in which case 'region' is in child widget coordinates and
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// offset is the (child) widget's offset in relation to the window surface. On QWS, 'offset'
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// can be larger than just the offset from the top-level widget as there may also be window
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// decorations which are painted into the window surface.
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virtual void flush(QWidget *widget, const QRegion ®ion, const QPoint &offset) = 0;
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virtual void setGeometry(const QRect &rect);
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QRect geometry() const;
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virtual bool scroll(const QRegion &area, int dx, int dy);
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virtual void beginPaint(const QRegion &);
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virtual void endPaint(const QRegion &);
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virtual QImage* buffer(const QWidget *widget);
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virtual QPixmap grabWidget(const QWidget *widget) const;
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virtual QPoint offset(const QWidget *widget) const;
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inline QRect rect(const QWidget *widget) const;
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bool hasFeature(WindowSurfaceFeature feature) const;
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virtual WindowSurfaceFeatures features() const;
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void setStaticContents(const QRegion ®ion);
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QRegion staticContents() const;
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protected:
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bool hasStaticContents() const;
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private:
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QWindowSurfacePrivate *d_ptr;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QWindowSurface::WindowSurfaceFeatures)
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inline QRect QWindowSurface::rect(const QWidget *widget) const
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{
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return widget->rect().translated(offset(widget));
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}
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inline bool QWindowSurface::hasFeature(WindowSurfaceFeature feature) const
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{
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return (features() & feature) != 0;
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}
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QT_END_NAMESPACE
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#endif // QWINDOWSURFACE_P_H
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