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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
60QT_BEGIN_NAMESPACE
61
62class QPlatformTextureList;
63class QPlatformTextureListWatcher;
64class QWidgetRepaintManager;
65
66class Q_AUTOTEST_EXPORT QWidgetRepaintManager
67{
68 Q_GADGET
69public:
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
85 QBackingStore *backingStore() const { return store; }
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 &region, 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
106private:
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 &region = QRegion());
120
121 void flush();
122 void flush(QWidget *widget, const QRegion &region, 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 QList<QWidget *> dirtyWidgets;
134 QList<QWidget *> dirtyRenderToTextureWidgets;
135
136 QRegion topLevelNeedsFlush;
137 QList<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
151QT_END_NAMESPACE
152
153#endif // QWIDGETREPAINTMANAGER_P_H
154