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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKCANVAS_H
#define QQUICKCANVAS_H
#include <QtQuick/qtquickglobal.h>
#include <QtCore/qmetatype.h>
#include <QtGui/qopengl.h>
#include <QtGui/qwindow.h>
#include <QtGui/qevent.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QSGEngine;
class QQuickItem;
class QSGTexture;
class QInputMethodEvent;
class QQuickCanvasPrivate;
class QOpenGLFramebufferObject;
class QDeclarativeIncubationController;
class QInputMethodEvent;
class Q_QUICK_EXPORT QQuickCanvas : public QWindow
{
Q_OBJECT
Q_PRIVATE_PROPERTY(QQuickCanvas::d_func(), QDeclarativeListProperty<QObject> data READ data DESIGNABLE false)
Q_PROPERTY(QColor color READ clearColor WRITE setClearColor NOTIFY clearColorChanged)
Q_CLASSINFO("DefaultProperty", "data")
Q_DECLARE_PRIVATE(QQuickCanvas)
public:
enum CreateTextureOption {
TextureHasAlphaChannel = 0x0001,
TextureHasMipmaps = 0x0002,
TextureOwnsGLTexture = 0x0004
};
Q_DECLARE_FLAGS(CreateTextureOptions, CreateTextureOption)
QQuickCanvas(QWindow *parent = 0);
virtual ~QQuickCanvas();
QQuickItem *rootItem() const;
QQuickItem *activeFocusItem() const;
QObject *focusObject() const;
QQuickItem *mouseGrabberItem() const;
bool sendEvent(QQuickItem *, QEvent *);
QSGEngine *sceneGraphEngine() const;
QImage grabFrameBuffer();
void setRenderTarget(QOpenGLFramebufferObject *fbo);
QOpenGLFramebufferObject *renderTarget() const;
void setRenderTarget(uint fboId, const QSize &size);
uint renderTargetId() const;
QSize renderTargetSize() const;
QDeclarativeIncubationController *incubationController() const;
virtual QAccessibleInterface *accessibleRoot() const;
// Scene graph specific functions
QSGTexture *createTextureFromImage(const QImage &image) const;
QSGTexture *createTextureFromId(uint id, const QSize &size, CreateTextureOptions options = CreateTextureOption(0)) const;
void setClearBeforeRendering(bool enabled);
bool clearBeforeRendering() const;
void setClearColor(const QColor &color);
QColor clearColor() const;
QOpenGLContext *openglContext() const;
Q_SIGNALS:
void frameSwapped();
void sceneGraphInitialized();
void sceneGraphInvalidated();
void beforeRendering();
void afterRendering();
void clearColorChanged(const QColor &);
protected:
QQuickCanvas(QQuickCanvasPrivate &dd, QWindow *parent = 0);
virtual void exposeEvent(QExposeEvent *);
virtual void resizeEvent(QResizeEvent *);
virtual void showEvent(QShowEvent *);
virtual void hideEvent(QHideEvent *);
virtual void focusInEvent(QFocusEvent *);
virtual void focusOutEvent(QFocusEvent *);
virtual bool event(QEvent *);
virtual void keyPressEvent(QKeyEvent *);
virtual void keyReleaseEvent(QKeyEvent *);
virtual void mousePressEvent(QMouseEvent *);
virtual void mouseReleaseEvent(QMouseEvent *);
virtual void mouseDoubleClickEvent(QMouseEvent *);
virtual void mouseMoveEvent(QMouseEvent *);
#ifndef QT_NO_WHEELEVENT
virtual void wheelEvent(QWheelEvent *);
#endif
private Q_SLOTS:
void maybeUpdate();
void cleanupSceneGraph();
private:
friend class QQuickItem;
friend class QQuickCanvasRenderLoop;
Q_DISABLE_COPY(QQuickCanvas)
};
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QQuickCanvas *)
QT_END_HEADER
#endif // QQUICKCANVAS_H
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