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Diffstat (limited to 'src/gui/painting/qwindowsurface_p.h')
| -rw-r--r-- | src/gui/painting/qwindowsurface_p.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/gui/painting/qwindowsurface_p.h b/src/gui/painting/qwindowsurface_p.h new file mode 100644 index 0000000000..a3fea67f24 --- /dev/null +++ b/src/gui/painting/qwindowsurface_p.h @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |