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39
40#ifndef QSGWINDOWSRENDERLOOP_P_H
41#define QSGWINDOWSRENDERLOOP_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 <QtCore/QObject>
55#include <QtCore/QElapsedTimer>
56
57#include <QtGui/QOpenGLContext>
58
59#include "qsgrenderloop_p.h"
60
61QT_BEGIN_NAMESPACE
62
63class QSGRenderContext;
64class QSGDefaultRenderContext;
65
66class QSGWindowsRenderLoop : public QSGRenderLoop
67{
68 Q_OBJECT
69public:
70 explicit QSGWindowsRenderLoop();
71 ~QSGWindowsRenderLoop();
72
73 void show(QQuickWindow *window) override;
74 void hide(QQuickWindow *window) override;
75
76 void windowDestroyed(QQuickWindow *window) override;
77
78 void exposureChanged(QQuickWindow *window) override;
79 QImage grab(QQuickWindow *window) override;
80
81 void update(QQuickWindow *window) override;
82 void maybeUpdate(QQuickWindow *window) override;
83
84 QAnimationDriver *animationDriver() const override { return m_animationDriver; }
85
86 QSGContext *sceneGraphContext() const override { return m_sg; }
87 QSGRenderContext *createRenderContext(QSGContext *) const override;
88
89 void releaseResources(QQuickWindow *) override;
90
91 void render();
92 void renderWindow(QQuickWindow *window);
93
94 bool event(QEvent *event) override;
95 bool anyoneShowing() const;
96
97 bool interleaveIncubation() const override;
98
99public Q_SLOTS:
100 void started();
101 void stopped();
102
103private:
104 struct WindowData {
105 QQuickWindow *window;
106 bool pendingUpdate;
107 };
108
109 void handleObscurity();
110 void maybePostUpdateTimer();
111 WindowData *windowData(QQuickWindow *window);
112
113 QList<WindowData> m_windows;
114
115 QOpenGLContext *m_gl;
116 QSGContext *m_sg;
117 QSGDefaultRenderContext *m_rc;
118
119 QAnimationDriver *m_animationDriver;
120
121 int m_updateTimer;
122 int m_animationTimer;
123
124 int m_vsyncDelta;
125};
126
127QT_END_NAMESPACE
128
129#endif // QSGWINDOWSRENDERLOOP_P_H
130

source code of qtdeclarative/src/quick/scenegraph/qsgwindowsrenderloop_p.h