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Diffstat (limited to 'src/quick/items/context2d/qquickcanvasitem_p.h')
-rw-r--r-- | src/quick/items/context2d/qquickcanvasitem_p.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/quick/items/context2d/qquickcanvasitem_p.h b/src/quick/items/context2d/qquickcanvasitem_p.h new file mode 100644 index 0000000000..70ca475c96 --- /dev/null +++ b/src/quick/items/context2d/qquickcanvasitem_p.h @@ -0,0 +1,148 @@ +/**************************************************************************** +** +** 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 <QtQuick/qquickitem.h> +#include <private/qv8engine_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QQuickContext2D; +class QQuickCanvasItemPrivate; +class Q_QUICK_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 ®ion); + 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 |