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39
40#ifndef QOPENGLCOMPOSITOR_H
41#define QOPENGLCOMPOSITOR_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 <QtOpenGL/qtopenglglobal.h>
55
56#include <QtCore/QTimer>
57#include <QtOpenGL/QOpenGLTextureBlitter>
58#include <QtGui/QMatrix4x4>
59
60QT_BEGIN_NAMESPACE
61
62class QOpenGLContext;
63class QOpenGLFramebufferObject;
64class QWindow;
65class QPlatformTextureList;
66
67class QOpenGLCompositorWindow
68{
69public:
70 virtual ~QOpenGLCompositorWindow() { }
71 virtual QWindow *sourceWindow() const = 0;
72 virtual const QPlatformTextureList *textures() const = 0;
73 virtual void beginCompositing() { }
74 virtual void endCompositing() { }
75};
76
77class Q_OPENGL_EXPORT QOpenGLCompositor : public QObject
78{
79 Q_OBJECT
80
81public:
82 static QOpenGLCompositor *instance();
83 static void destroy();
84
85 void setTarget(QOpenGLContext *context, QWindow *window, const QRect &nativeTargetGeometry);
86 void setRotation(int degrees);
87 QOpenGLContext *context() const { return m_context; }
88 QWindow *targetWindow() const { return m_targetWindow; }
89
90 void update();
91 QImage grab();
92
93 QList<QOpenGLCompositorWindow *> windows() const { return m_windows; }
94 void addWindow(QOpenGLCompositorWindow *window);
95 void removeWindow(QOpenGLCompositorWindow *window);
96 void moveToTop(QOpenGLCompositorWindow *window);
97 void changeWindowIndex(QOpenGLCompositorWindow *window, int newIdx);
98
99signals:
100 void topWindowChanged(QOpenGLCompositorWindow *window);
101
102private slots:
103 void handleRenderAllRequest();
104
105private:
106 QOpenGLCompositor();
107 ~QOpenGLCompositor();
108
109 void renderAll(QOpenGLFramebufferObject *fbo);
110 void render(QOpenGLCompositorWindow *window);
111
112 QOpenGLContext *m_context;
113 QWindow *m_targetWindow;
114 QRect m_nativeTargetGeometry;
115 int m_rotation;
116 QMatrix4x4 m_rotationMatrix;
117 QTimer m_updateTimer;
118 QOpenGLTextureBlitter m_blitter;
119 QList<QOpenGLCompositorWindow *> m_windows;
120};
121
122QT_END_NAMESPACE
123
124#endif // QOPENGLCOMPOSITOR_H
125