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22 ** GNU General Public License Usage
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42 #ifndef QQUICKCANVAS_H
43 #define QQUICKCANVAS_H
45 #include <QtQuick/qtquickglobal.h>
46 #include <QtCore/qmetatype.h>
47 #include <QtGui/qopengl.h>
48 #include <QtGui/qwindow.h>
49 #include <QtGui/qevent.h>
58 class QInputMethodEvent;
59 class QQuickCanvasPrivate;
60 class QOpenGLFramebufferObject;
61 class QDeclarativeIncubationController;
62 class QInputMethodEvent;
64 class Q_QUICK_EXPORT QQuickCanvas : public QWindow
67 Q_PRIVATE_PROPERTY(QQuickCanvas::d_func(), QDeclarativeListProperty<QObject> data READ data DESIGNABLE false)
68 Q_PROPERTY(QColor color READ clearColor WRITE setClearColor NOTIFY clearColorChanged)
69 Q_CLASSINFO("DefaultProperty", "data")
70 Q_DECLARE_PRIVATE(QQuickCanvas)
72 enum CreateTextureOption {
73 TextureHasAlphaChannel = 0x0001,
74 TextureHasMipmaps = 0x0002,
75 TextureOwnsGLTexture = 0x0004
78 Q_DECLARE_FLAGS(CreateTextureOptions, CreateTextureOption)
80 QQuickCanvas(QWindow *parent = 0);
82 virtual ~QQuickCanvas();
84 QQuickItem *rootItem() const;
85 QQuickItem *activeFocusItem() const;
87 QQuickItem *mouseGrabberItem() const;
89 bool sendEvent(QQuickItem *, QEvent *);
91 QSGEngine *sceneGraphEngine() const;
93 QImage grabFrameBuffer();
95 void setRenderTarget(QOpenGLFramebufferObject *fbo);
96 QOpenGLFramebufferObject *renderTarget() const;
98 QDeclarativeIncubationController *incubationController() const;
100 virtual QAccessibleInterface *accessibleRoot() const;
102 // Scene graph specific functions
103 QSGTexture *createTextureFromImage(const QImage &image) const;
104 QSGTexture *createTextureFromId(uint id, const QSize &size, CreateTextureOptions options = CreateTextureOption(0)) const;
106 void setClearBeforeRendering(bool enabled);
107 bool clearBeforeRendering() const;
109 void setClearColor(const QColor &color);
110 QColor clearColor() const;
112 QOpenGLContext *openglContext() const;
116 void sceneGraphInitialized();
117 void sceneGraphInvalidated();
118 void beforeRendering();
119 void afterRendering();
120 void clearColorChanged(const QColor &);
123 QQuickCanvas(QQuickCanvasPrivate &dd, QWindow *parent = 0);
125 virtual void exposeEvent(QExposeEvent *);
126 virtual void resizeEvent(QResizeEvent *);
128 virtual void showEvent(QShowEvent *);
129 virtual void hideEvent(QHideEvent *);
131 virtual void focusInEvent(QFocusEvent *);
132 virtual void focusOutEvent(QFocusEvent *);
134 virtual bool event(QEvent *);
135 virtual void keyPressEvent(QKeyEvent *);
136 virtual void keyReleaseEvent(QKeyEvent *);
137 virtual void mousePressEvent(QMouseEvent *);
138 virtual void mouseReleaseEvent(QMouseEvent *);
139 virtual void mouseDoubleClickEvent(QMouseEvent *);
140 virtual void mouseMoveEvent(QMouseEvent *);
141 #ifndef QT_NO_WHEELEVENT
142 virtual void wheelEvent(QWheelEvent *);
147 void cleanupSceneGraph();
150 friend class QQuickItem;
151 friend class QQuickCanvasRenderLoop;
152 Q_DISABLE_COPY(QQuickCanvas)
157 Q_DECLARE_METATYPE(QQuickCanvas *)
161 #endif // QQUICKCANVAS_H