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Diffstat (limited to 'src/gui/painting/qbackingstore_p.h')
| -rw-r--r-- | src/gui/painting/qbackingstore_p.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/gui/painting/qbackingstore_p.h b/src/gui/painting/qbackingstore_p.h new file mode 100644 index 0000000..3413175 --- /dev/null +++ b/src/gui/painting/qbackingstore_p.h @@ -0,0 +1,268 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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 + ); + } + +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; + + // ### 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); + 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) { + widget->d_func()->dirty = rgn; + dirtyWidgets.append(widget); + widget->d_func()->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 |