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-/****************************************************************************
-**
-** 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.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** 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.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QBACKINGSTORE_P_H
-#define QBACKINGSTORE_P_H
-
-//
-// W A R N I N G
-// -------------
-//
-// This file is not part of the Qt API. It exists purely as an
-// implementation detail. This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include <QDebug>
-#include <QtGui/qwidget.h>
-#include <private/qwidget_p.h>
-#include <private/qwindowsurface_p.h>
-#ifdef Q_WS_QWS
-#include <private/qwindowsurface_qws_p.h>
-#endif
-
-QT_BEGIN_NAMESPACE
-
-class QWindowSurface;
-
-struct BeginPaintInfo {
- inline BeginPaintInfo() : wasFlushed(0), nothingToPaint(0), windowSurfaceRecreated(0) {}
- uint wasFlushed : 1;
- uint nothingToPaint : 1;
- uint windowSurfaceRecreated : 1;
-};
-
-class Q_AUTOTEST_EXPORT QWidgetBackingStore
-{
-public:
- QWidgetBackingStore(QWidget *t);
- ~QWidgetBackingStore();
-
- static void showYellowThing(QWidget *widget, const QRegion &rgn, int msec, bool);
-
- void sync(QWidget *exposedWidget, const QRegion &exposedRegion);
- void sync();
- void flush(QWidget *widget = 0, QWindowSurface *surface = 0);
-
- inline QPoint topLevelOffset() const { return tlwOffset; }
-
- QWindowSurface *surface() const { return windowSurface; }
-
- inline bool isDirty() const
- {
- return !(dirtyWidgets.isEmpty() && dirty.isEmpty() && !hasDirtyFromPreviousSync
- && !fullUpdatePending
-#if defined(Q_WS_QWS) && !defined(QT_NO_QWS_MANAGER)
- && !hasDirtyWindowDecoration()
-#endif
- );
- }
-
- // ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
- void markDirty(const QRegion &rgn, QWidget *widget, bool updateImmediately = false,
- bool invalidateBuffer = false);
- void markDirty(const QRect &rect, QWidget *widget, bool updateImmediately = false,
- bool invalidateBuffer = false);
-
-private:
- QWidget *tlw;
- QRegion dirtyOnScreen; // needsFlush
- QRegion dirty; // needsRepaint
- QRegion dirtyFromPreviousSync;
- QVector<QWidget *> dirtyWidgets;
- QVector<QWidget *> *dirtyOnScreenWidgets;
- QList<QWidget *> staticWidgets;
- QWindowSurface *windowSurface;
-#ifdef Q_BACKINGSTORE_SUBSURFACES
- QList<QWindowSurface*> subSurfaces;
-#endif
- uint hasDirtyFromPreviousSync : 1;
- uint fullUpdatePending : 1;
-
- QPoint tlwOffset;
-
- static bool flushPaint(QWidget *widget, const QRegion &rgn);
- static void unflushPaint(QWidget *widget, const QRegion &rgn);
-
- bool bltRect(const QRect &rect, int dx, int dy, QWidget *widget);
- void releaseBuffer();
-
- void beginPaint(QRegion &toClean, QWidget *widget, QWindowSurface *windowSurface,
- BeginPaintInfo *returnInfo, bool toCleanIsInTopLevelCoordinates = true);
- void endPaint(const QRegion &cleaned, QWindowSurface *windowSurface, BeginPaintInfo *beginPaintInfo);
-
- QRegion dirtyRegion(QWidget *widget = 0) const;
- QRegion staticContents(QWidget *widget = 0, const QRect &withinClipRect = QRect()) const;
-
- void markDirtyOnScreen(const QRegion &dirtyOnScreen, QWidget *widget, const QPoint &topLevelOffset);
-
- void removeDirtyWidget(QWidget *w);
-
-#if defined(Q_WS_QWS) && !defined(QT_NO_QWS_MANAGER)
- bool hasDirtyWindowDecoration() const;
- void paintWindowDecoration();
-#endif
- void updateLists(QWidget *widget);
-
- inline void addDirtyWidget(QWidget *widget, const QRegion &rgn)
- {
- if (widget && !widget->d_func()->inDirtyList && !widget->data->in_destructor) {
- QWidgetPrivate *widgetPrivate = widget->d_func();
-#ifndef QT_NO_GRAPHICSEFFECT
- if (widgetPrivate->graphicsEffect)
- widgetPrivate->dirty = widgetPrivate->effectiveRectFor(rgn.boundingRect());
- else
-#endif //QT_NO_GRAPHICSEFFECT
- widgetPrivate->dirty = rgn;
- dirtyWidgets.append(widget);
- widgetPrivate->inDirtyList = true;
- }
- }
-
- inline void dirtyWidgetsRemoveAll(QWidget *widget)
- {
- int i = 0;
- while (i < dirtyWidgets.size()) {
- if (dirtyWidgets.at(i) == widget)
- dirtyWidgets.remove(i);
- else
- ++i;
- }
- }
-
- inline void addStaticWidget(QWidget *widget)
- {
- if (!widget)
- return;
-
- Q_ASSERT(widget->testAttribute(Qt::WA_StaticContents));
- if (!staticWidgets.contains(widget))
- staticWidgets.append(widget);
- }
-
- inline void removeStaticWidget(QWidget *widget)
- { staticWidgets.removeAll(widget); }
-
- // Move the reparented widget and all its static children from this backing store
- // to the new backing store if reparented into another top-level / backing store.
- inline void moveStaticWidgets(QWidget *reparented)
- {
- Q_ASSERT(reparented);
- QWidgetBackingStore *newBs = reparented->d_func()->maybeBackingStore();
- if (newBs == this)
- return;
-
- int i = 0;
- while (i < staticWidgets.size()) {
- QWidget *w = staticWidgets.at(i);
- if (reparented == w || reparented->isAncestorOf(w)) {
- staticWidgets.removeAt(i);
- if (newBs)
- newBs->addStaticWidget(w);
- } else {
- ++i;
- }
- }
- }
-
- inline QRect topLevelRect() const
- {
-#ifdef Q_WS_QWS
- return tlw->frameGeometry();
-#else
- return tlw->data->crect;
-#endif
- }
-
- inline void appendDirtyOnScreenWidget(QWidget *widget)
- {
- if (!widget)
- return;
-
- if (!dirtyOnScreenWidgets) {
- dirtyOnScreenWidgets = new QVector<QWidget *>;
- dirtyOnScreenWidgets->append(widget);
- } else if (!dirtyOnScreenWidgets->contains(widget)) {
- dirtyOnScreenWidgets->append(widget);
- }
- }
-
- inline void dirtyOnScreenWidgetsRemoveAll(QWidget *widget)
- {
- if (!widget || !dirtyOnScreenWidgets)
- return;
-
- int i = 0;
- while (i < dirtyOnScreenWidgets->size()) {
- if (dirtyOnScreenWidgets->at(i) == widget)
- dirtyOnScreenWidgets->remove(i);
- else
- ++i;
- }
- }
-
- inline void resetWidget(QWidget *widget)
- {
- if (widget) {
- widget->d_func()->inDirtyList = false;
- widget->d_func()->isScrolled = false;
- widget->d_func()->isMoved = false;
- widget->d_func()->dirty = QRegion();
- }
- }
-
- inline void updateStaticContentsSize()
- {
- for (int i = 0; i < staticWidgets.size(); ++i) {
- QWidgetPrivate *wd = staticWidgets.at(i)->d_func();
- if (!wd->extra)
- wd->createExtra();
- wd->extra->staticContentsSize = wd->data.crect.size();
- }
- }
-
- inline bool hasStaticContents() const
- { return !staticWidgets.isEmpty() && windowSurface->hasFeature(QWindowSurface::StaticContents); }
-
- friend QRegion qt_dirtyRegion(QWidget *);
- friend class QWidgetPrivate;
- friend class QWidget;
- friend class QWSManagerPrivate;
- friend class QETWidget;
- friend class QWindowSurface;
- friend class QWSWindowSurface;
-};
-
-QT_END_NAMESPACE
-
-#endif // QBACKINGSTORE_P_H
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