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22 ** GNU General Public License Usage
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42 #ifndef QQUICKCANVAS_H
43 #define QQUICKCANVAS_H
45 #include <QtCore/qmetatype.h>
46 #include <QtGui/qopengl.h>
47 #include <QtGui/qwindow.h>
53 QT_MODULE(Declarative)
58 class QQuickCanvasPrivate;
59 class QOpenGLFramebufferObject;
60 class QDeclarativeIncubationController;
62 class Q_DECLARATIVE_EXPORT QQuickCanvas : public QWindow
65 Q_DECLARE_PRIVATE(QQuickCanvas)
67 enum CreateTextureOption {
68 TextureHasAlphaChannel = 0x0001,
69 TextureHasMipmaps = 0x0002,
70 TextureOwnsGLTexture = 0x0004
73 Q_DECLARE_FLAGS(CreateTextureOptions, CreateTextureOption)
75 QQuickCanvas(QWindow *parent = 0);
77 virtual ~QQuickCanvas();
79 QQuickItem *rootItem() const;
80 QQuickItem *activeFocusItem() const;
82 QQuickItem *mouseGrabberItem() const;
84 bool sendEvent(QQuickItem *, QEvent *);
86 QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
88 QSGEngine *sceneGraphEngine() const;
90 void setVSyncAnimations(bool enabled);
91 bool vsyncAnimations() const;
93 QImage grabFrameBuffer();
95 void setRenderTarget(QOpenGLFramebufferObject *fbo);
96 QOpenGLFramebufferObject *renderTarget() const;
98 QDeclarativeIncubationController *incubationController() const;
100 // Scene graph specific functions
101 QSGTexture *createTextureFromImage(const QImage &image) const;
102 QSGTexture *createTextureFromId(uint id, const QSize &size, CreateTextureOptions options = CreateTextureOption(0)) const;
104 void setClearBeforeRendering(bool enabled);
105 bool clearBeforeRendering() const;
107 void setClearColor(const QColor &color);
108 QColor clearColor() const;
110 QOpenGLContext *openglContext() const;
114 void sceneGraphInitialized();
115 void beforeRendering();
116 void afterRendering();
119 QQuickCanvas(QQuickCanvasPrivate &dd, QWindow *parent = 0);
121 virtual void exposeEvent(QExposeEvent *);
122 virtual void resizeEvent(QResizeEvent *);
124 virtual void showEvent(QShowEvent *);
125 virtual void hideEvent(QHideEvent *);
127 virtual void focusInEvent(QFocusEvent *);
128 virtual void focusOutEvent(QFocusEvent *);
130 virtual bool event(QEvent *);
131 virtual void keyPressEvent(QKeyEvent *);
132 virtual void keyReleaseEvent(QKeyEvent *);
133 virtual void inputMethodEvent(QInputMethodEvent *);
134 virtual void mousePressEvent(QMouseEvent *);
135 virtual void mouseReleaseEvent(QMouseEvent *);
136 virtual void mouseDoubleClickEvent(QMouseEvent *);
137 virtual void mouseMoveEvent(QMouseEvent *);
138 #ifndef QT_NO_WHEELEVENT
139 virtual void wheelEvent(QWheelEvent *);
143 void sceneGraphChanged();
145 void animationStarted();
146 void animationStopped();
149 friend class QQuickItem;
150 friend class QQuickCanvasRenderLoop;
151 Q_DISABLE_COPY(QQuickCanvas)
156 Q_DECLARE_METATYPE(QQuickCanvas *)
160 #endif // QQUICKCANVAS_H