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-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** 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 QQUICKCANVASITEM_P_H
-#define QQUICKCANVASITEM_P_H
-
-#include <qquickitem.h>
-#include <private/qv8engine_p.h>
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Declarative)
-class QQuickContext2D;
-class QQuickCanvasItemPrivate;
-class Q_DECLARATIVE_EXPORT QQuickCanvasItem : public QQuickItem
-{
- Q_OBJECT
- Q_ENUMS(RenderTarget)
- Q_ENUMS(ImageFilterMode)
-
- Q_PROPERTY(QSizeF canvasSize READ canvasSize WRITE setCanvasSize NOTIFY canvasSizeChanged)
- Q_PROPERTY(QSize tileSize READ tileSize WRITE setTileSize NOTIFY tileSizeChanged)
- Q_PROPERTY(QRectF canvasWindow READ canvasWindow WRITE setCanvasWindow NOTIFY canvasWindowChanged)
- Q_PROPERTY(bool renderInThread READ renderInThread WRITE setRenderInThread NOTIFY renderInThreadChanged)
- Q_PROPERTY(RenderTarget renderTarget READ renderTarget WRITE setRenderTarget NOTIFY renderTargetChanged)
-public:
- enum RenderTarget {
- Image,
- FramebufferObject
- };
-
- enum ImageFilterMode {
- Threshold,
- Mono,
- GrayScale,
- Brightness,
- Invert,
- Blur,
- Opaque,
- Convolute
- };
-
- QQuickCanvasItem(QQuickItem *parent = 0);
- ~QQuickCanvasItem();
-
- QSizeF canvasSize() const;
- void setCanvasSize(const QSizeF &);
-
- QSize tileSize() const;
- void setTileSize(const QSize &);
-
- QRectF canvasWindow() const;
- void setCanvasWindow(const QRectF& rect);
-
- bool renderInThread() const;
- void setRenderInThread(bool renderInThread);
-
- RenderTarget renderTarget() const;
- void setRenderTarget(RenderTarget target);
-
- QQuickContext2D* context() const;
- QImage toImage(const QRectF& region = QRectF()) const;
-
- QImage loadedImage(const QUrl& url);
-
-Q_SIGNALS:
- void paint(QDeclarativeV8Handle context, const QRect &region);
- void painted();
- void canvasSizeChanged();
- void tileSizeChanged();
- void renderInThreadChanged();
- void textureChanged();
- void canvasWindowChanged();
- void renderTargetChanged();
- void imageLoaded();
-public Q_SLOTS:
- QString toDataURL(const QString& type = QLatin1String("image/png")) const;
- QDeclarativeV8Handle getContext(const QString & = QLatin1String("2d"));
- void markDirty(const QRectF& region);
- void requestPaint() {markDirty(canvasWindow());}
- // Save current canvas to disk
- bool save(const QString& filename) const;
- void loadImage(const QUrl& url);
- void unloadImage(const QUrl& url);
- bool isImageLoaded(const QUrl& url) const;
- bool isImageLoading(const QUrl& url) const;
- bool isImageError(const QUrl& url) const;
-private Q_SLOTS:
- void _doPainting(const QRectF& region);
-protected:
- virtual void componentComplete();
- virtual QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *);
- virtual void geometryChanged(const QRectF &newGeometry,
- const QRectF &oldGeometry);
- virtual void updatePolish();
-private:
- void createContext();
- void createTexture();
- Q_DECLARE_PRIVATE(QQuickCanvasItem)
- friend class QQuickContext2D;
- friend class QQuickContext2DTexture;
-};
-QT_END_NAMESPACE
-
-QML_DECLARE_TYPE(QQuickCanvasItem)
-
-QT_END_HEADER
-
-#endif //QQUICKCANVASITEM_P_H