1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. 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The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QWIDGETREPAINTMANAGER_P_H 41 #define QWIDGETREPAINTMANAGER_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtWidgets/private/qtwidgetsglobal_p.h> 55 #include <QDebug> 56 #include <QtWidgets/qwidget.h> 57 #include <private/qwidget_p.h> 58 #include <QtGui/qbackingstore.h> 59 60 QT_BEGIN_NAMESPACE 61 62 class QPlatformTextureList; 63 class QPlatformTextureListWatcher; 64 class QWidgetRepaintManager; 65 66 class Q_AUTOTEST_EXPORT QWidgetRepaintManager 67 { 68 Q_GADGET 69 public: 70 enum UpdateTime { 71 UpdateNow, 72 UpdateLater 73 }; 74 Q_ENUM(UpdateTime) 75 76 enum BufferState{ 77 BufferValid, 78 BufferInvalid 79 }; 80 Q_ENUM(BufferState) 81 82 QWidgetRepaintManager(QWidget *t); 83 ~QWidgetRepaintManager(); 84 backingStore()85 QBackingStore *backingStore() const { return store; } setBackingStore(QBackingStore * backingStore)86 void setBackingStore(QBackingStore *backingStore) { store = backingStore; } 87 88 template <class T> 89 void markDirty(const T &r, QWidget *widget, UpdateTime updateTime = UpdateLater, 90 BufferState bufferState = BufferValid); 91 92 void removeDirtyWidget(QWidget *w); 93 94 void sync(QWidget *exposedWidget, const QRegion &exposedRegion); 95 void sync(); 96 97 void markNeedsFlush(QWidget *widget, const QRegion ®ion, const QPoint &topLevelOffset); 98 99 void addStaticWidget(QWidget *widget); 100 void moveStaticWidgets(QWidget *reparented); 101 void removeStaticWidget(QWidget *widget); 102 QRegion staticContents(QWidget *widget = nullptr, const QRect &withinClipRect = QRect()) const; 103 104 bool bltRect(const QRect &rect, int dx, int dy, QWidget *widget); 105 106 private: 107 void updateLists(QWidget *widget); 108 109 void addDirtyWidget(QWidget *widget, const QRegion &rgn); 110 void resetWidget(QWidget *widget); 111 112 void addDirtyRenderToTextureWidget(QWidget *widget); 113 114 void sendUpdateRequest(QWidget *widget, UpdateTime updateTime); 115 116 bool syncAllowed(); 117 void paintAndFlush(); 118 119 void markNeedsFlush(QWidget *widget, const QRegion ®ion = QRegion()); 120 121 void flush(); 122 void flush(QWidget *widget, const QRegion ®ion, QPlatformTextureList *widgetTextures); 123 124 bool isDirty() const; 125 126 bool hasStaticContents() const; 127 void updateStaticContentsSize(); 128 129 QWidget *tlw = nullptr; 130 QBackingStore *store = nullptr; 131 132 QRegion dirty; // needsRepaint 133 QVector<QWidget *> dirtyWidgets; 134 QVector<QWidget *> dirtyRenderToTextureWidgets; 135 136 QRegion topLevelNeedsFlush; 137 QVector<QWidget *> needsFlushWidgets; 138 139 QList<QWidget *> staticWidgets; 140 141 QPlatformTextureListWatcher *textureListWatcher = nullptr; 142 143 bool updateRequestSent = false; 144 145 QElapsedTimer perfTime; 146 int perfFrames = 0; 147 148 Q_DISABLE_COPY_MOVE(QWidgetRepaintManager) 149 }; 150 151 QT_END_NAMESPACE 152 153 #endif // QWIDGETREPAINTMANAGER_P_H 154