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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenVG module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPIXMAPDATA_VG_P_H
#define QPIXMAPDATA_VG_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qpixmap_raster_p.h>
#include <QtGui/private/qvolatileimage_p.h>
#include "qvg_p.h"
#if defined(Q_OS_SYMBIAN)
class RSGImage;
#endif
QT_BEGIN_NAMESPACE
class QEglContext;
class QVGImagePool;
class QImageReader;
#if !defined(QT_NO_EGL)
class QVGPixmapData;
class QVGSharedContext;
void qt_vg_register_pixmap(QVGPixmapData *pd);
void qt_vg_unregister_pixmap(QVGPixmapData *pd);
void qt_vg_hibernate_pixmaps(QVGSharedContext *context);
#endif
class QNativeImageHandleProvider;
class Q_OPENVG_EXPORT QVGPixmapData : public QPixmapData
{
public:
QVGPixmapData(PixelType type);
~QVGPixmapData();
QPixmapData *createCompatiblePixmapData() const;
// Is this pixmap valid (i.e. non-zero in size)?
bool isValid() const;
void resize(int width, int height);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
void fromImageReader(QImageReader *imageReader,
Qt::ImageConversionFlags flags);
bool fromFile(const QString &filename, const char *format,
Qt::ImageConversionFlags flags);
bool fromData(const uchar *buffer, uint len, const char *format,
Qt::ImageConversionFlags flags);
void fill(const QColor &color);
bool hasAlphaChannel() const;
void setAlphaChannel(const QPixmap &alphaChannel);
QImage toImage() const;
void copy(const QPixmapData *data, const QRect &rect);
QImage *buffer();
QPaintEngine* paintEngine() const;
// Return the VGImage form of this pixmap, creating it if necessary.
// This assumes that there is a VG context current.
virtual VGImage toVGImage();
// Return the VGImage form for a specific opacity setting.
virtual VGImage toVGImage(qreal opacity);
// Detach this image from the image pool.
virtual void detachImageFromPool();
// Release the VG resources associated with this pixmap and copy
// the pixmap's contents out of the GPU back into main memory.
// The VG resource will be automatically recreated the next time
// toVGImage() is called. Does nothing if the pixmap cannot be
// hibernated for some reason (e.g. VGImage is shared with another
// process via a SgImage).
virtual void hibernate();
// Called when the QVGImagePool wants to reclaim this pixmap's
// VGImage objects to reuse storage.
virtual void reclaimImages();
// If vgImage is valid but source is null, copies pixel data from GPU back
// into main memory and destroys vgImage. For a normal pixmap this function
// does nothing, however if the pixmap was created directly from a VGImage
// (e.g. via SgImage on Symbian) then by doing the readback this ensures
// that QImage-based functions can operate too.
virtual void ensureReadback(bool readOnly) const;
QSize size() const { return QSize(w, h); }
#if defined(Q_OS_SYMBIAN)
void* toNativeType(NativeType type);
void fromNativeType(void* pixmap, NativeType type);
bool initFromNativeImageHandle(void *handle, const QString &type);
void createFromNativeImageHandleProvider();
void releaseNativeImageHandle();
#endif
protected:
int metric(QPaintDevice::PaintDeviceMetric metric) const;
void createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace);
#if defined(Q_OS_SYMBIAN)
void cleanup();
#endif
private:
QVGPixmapData *nextLRU;
QVGPixmapData *prevLRU;
bool inLRU;
bool failedToAlloc;
friend class QVGImagePool;
friend class QVGPaintEngine;
#if !defined(QT_NO_EGL)
QVGPixmapData *next;
QVGPixmapData *prev;
friend void qt_vg_register_pixmap(QVGPixmapData *pd);
friend void qt_vg_unregister_pixmap(QVGPixmapData *pd);
friend void qt_vg_hibernate_pixmaps(QVGSharedContext *context);
#endif
protected:
QSize prevSize;
VGImage vgImage;
VGImage vgImageOpacity;
qreal cachedOpacity;
mutable QVolatileImage source;
mutable bool recreate;
bool inImagePool;
#if !defined(QT_NO_EGL)
mutable QEglContext *context;
#endif
#if defined(Q_OS_SYMBIAN)
mutable QNativeImageHandleProvider *nativeImageHandleProvider;
void *nativeImageHandle;
QString nativeImageType;
#endif
void forceToImage();
QImage::Format sourceFormat() const;
QImage::Format idealFormat(QImage *image, Qt::ImageConversionFlags flags) const;
void updateSerial();
void destroyImageAndContext();
void destroyImages();
};
QT_END_NAMESPACE
#endif
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