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Diffstat (limited to 'src/widgets/kernel/qwidgetrepaintmanager_p.h')
| -rw-r--r-- | src/widgets/kernel/qwidgetrepaintmanager_p.h | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/src/widgets/kernel/qwidgetrepaintmanager_p.h b/src/widgets/kernel/qwidgetrepaintmanager_p.h new file mode 100644 index 0000000000..36f42b7e1a --- /dev/null +++ b/src/widgets/kernel/qwidgetrepaintmanager_p.h @@ -0,0 +1,281 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtWidgets module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QWIDGETREPAINTMANAGER_P_H +#define QWIDGETREPAINTMANAGER_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 <QtWidgets/private/qtwidgetsglobal_p.h> +#include <QDebug> +#include <QtWidgets/qwidget.h> +#include <private/qwidget_p.h> +#include <QtGui/qbackingstore.h> + +QT_BEGIN_NAMESPACE + +class QPlatformTextureList; +class QPlatformTextureListWatcher; +class QWidgetRepaintManager; + +struct BeginPaintInfo { + inline BeginPaintInfo() : wasFlushed(0), nothingToPaint(0), backingStoreRecreated(0) {} + uint wasFlushed : 1; + uint nothingToPaint : 1; + uint backingStoreRecreated : 1; +}; + +#ifndef QT_NO_OPENGL +class QPlatformTextureListWatcher : public QObject +{ + Q_OBJECT + +public: + QPlatformTextureListWatcher(QWidgetRepaintManager *repaintManager); + void watch(QPlatformTextureList *textureList); + bool isLocked() const; + +private slots: + void onLockStatusChanged(bool locked); + +private: + QHash<QPlatformTextureList *, bool> m_locked; + QWidgetRepaintManager *m_repaintManager; +}; +#endif + +class Q_AUTOTEST_EXPORT QWidgetRepaintManager +{ +public: + enum UpdateTime { + UpdateNow, + UpdateLater + }; + + enum BufferState{ + BufferValid, + BufferInvalid + }; + + QWidgetRepaintManager(QWidget *t); + ~QWidgetRepaintManager(); + + static void showYellowThing(QWidget *widget, const QRegion &rgn, int msec, bool); + + void sync(QWidget *exposedWidget, const QRegion &exposedRegion); + void sync(); + void flush(QWidget *widget = nullptr); + + QBackingStore *backingStore() const { return store; } + + inline bool isDirty() const + { + return !(dirtyWidgets.isEmpty() && dirty.isEmpty() && dirtyRenderToTextureWidgets.isEmpty()); + } + + template <class T> + void markDirty(const T &r, QWidget *widget, UpdateTime updateTime = UpdateLater, + BufferState bufferState = BufferValid); + +private: + QWidget *tlw; + QRegion dirtyOnScreen; // needsFlush + QRegion dirty; // needsRepaint + QRegion dirtyFromPreviousSync; + QVector<QWidget *> dirtyWidgets; + QVector<QWidget *> dirtyRenderToTextureWidgets; + QVector<QWidget *> dirtyOnScreenWidgets; + QList<QWidget *> staticWidgets; + QBackingStore *store; + uint updateRequestSent : 1; + + QPlatformTextureListWatcher *textureListWatcher; + QElapsedTimer perfTime; + int perfFrames; + + void sendUpdateRequest(QWidget *widget, UpdateTime updateTime); + + static bool flushPaint(QWidget *widget, const QRegion &rgn); + static void unflushPaint(QWidget *widget, const QRegion &rgn); + static void qt_flush(QWidget *widget, const QRegion ®ion, QBackingStore *backingStore, + QWidget *tlw, + QPlatformTextureList *widgetTextures, + QWidgetRepaintManager *repaintManager); + + void doSync(); + bool bltRect(const QRect &rect, int dx, int dy, QWidget *widget); + + void beginPaint(QRegion &toClean, QWidget *widget, QBackingStore *backingStore, + BeginPaintInfo *returnInfo, bool toCleanIsInTopLevelCoordinates = true); + void endPaint(const QRegion &cleaned, QBackingStore *backingStore, BeginPaintInfo *beginPaintInfo); + + QRegion dirtyRegion(QWidget *widget = nullptr) const; + QRegion staticContents(QWidget *widget = nullptr, const QRect &withinClipRect = QRect()) const; + + void markDirtyOnScreen(const QRegion &dirtyOnScreen, QWidget *widget, const QPoint &topLevelOffset); + + void removeDirtyWidget(QWidget *w); + + void updateLists(QWidget *widget); + + bool syncAllowed(); + + inline void addDirtyWidget(QWidget *widget, const QRegion &rgn) + { + if (widget && !widget->d_func()->inDirtyList && !widget->data->in_destructor) { + QWidgetPrivate *widgetPrivate = widget->d_func(); +#if QT_CONFIG(graphicseffect) + if (widgetPrivate->graphicsEffect) + widgetPrivate->dirty = widgetPrivate->effectiveRectFor(rgn.boundingRect()); + else +#endif // QT_CONFIG(graphicseffect) + widgetPrivate->dirty = rgn; + dirtyWidgets.append(widget); + widgetPrivate->inDirtyList = true; + } + } + + inline void addDirtyRenderToTextureWidget(QWidget *widget) + { + if (widget && !widget->d_func()->inDirtyList && !widget->data->in_destructor) { + QWidgetPrivate *widgetPrivate = widget->d_func(); + Q_ASSERT(widgetPrivate->renderToTexture); + dirtyRenderToTextureWidgets.append(widget); + widgetPrivate->inDirtyList = true; + } + } + + 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); + QWidgetRepaintManager *newPaintManager = reparented->d_func()->maybeRepaintManager(); + if (newPaintManager == this) + return; + + int i = 0; + while (i < staticWidgets.size()) { + QWidget *w = staticWidgets.at(i); + if (reparented == w || reparented->isAncestorOf(w)) { + staticWidgets.removeAt(i); + if (newPaintManager) + newPaintManager->addStaticWidget(w); + } else { + ++i; + } + } + } + + inline QRect topLevelRect() const + { + return tlw->data->crect; + } + + inline void appendDirtyOnScreenWidget(QWidget *widget) + { + if (!widget) + return; + + if (!dirtyOnScreenWidgets.contains(widget)) + dirtyOnScreenWidgets.append(widget); + } + + 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 + { +#if defined(Q_OS_WIN) + return !staticWidgets.isEmpty(); +#else + return !staticWidgets.isEmpty() && false; +#endif + } + + friend QRegion qt_dirtyRegion(QWidget *); + friend class QWidgetPrivate; + friend class QWidget; + friend class QBackingStore; + + Q_DISABLE_COPY_MOVE(QWidgetRepaintManager) +}; + +QT_END_NAMESPACE + +#endif // QWIDGETREPAINTMANAGER_P_H |