--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/painting/qbackingstore_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,273 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 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
+#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
+ bool hasDirtyFromPreviousSync;
+
+ 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();
+ if (widgetPrivate->graphicsEffect)
+ widgetPrivate->dirty = widgetPrivate->effectiveRectFor(rgn.boundingRect());
+ else
+ 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();
+#endif
+ return tlw->data->crect;
+ }
+
+ 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->hasStaticContentsSupport(); }
+
+ 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