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Diffstat (limited to 'src/openvg/qvgimagepool_p.h')
| -rw-r--r-- | src/openvg/qvgimagepool_p.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/src/openvg/qvgimagepool_p.h b/src/openvg/qvgimagepool_p.h deleted file mode 100644 index 07c57bf44a..0000000000 --- a/src/openvg/qvgimagepool_p.h +++ /dev/null @@ -1,157 +0,0 @@ -/**************************************************************************** -** -** 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. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 QVGIMAGEPOOL_P_H -#define QVGIMAGEPOOL_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 "qvg.h" -#include <QtCore/qscopedpointer.h> - -QT_BEGIN_NAMESPACE - -class QVGPixmapData; -class QVGImagePoolPrivate; - -class Q_OPENVG_EXPORT QVGImagePool -{ -public: - QVGImagePool(); - virtual ~QVGImagePool(); - - static QVGImagePool *instance(); - - // This function can be used from system-specific graphics system - // plugins to alter the image allocation strategy. - static void setImagePool(QVGImagePool *pool); - - // Create a new VGImage from the pool with the specified parameters - // that is not associated with a pixmap. The VGImage is returned to - // the pool when releaseImage() is called. - // - // This function will call reclaimSpace() when vgCreateImage() fails. - // - // This function is typically called when allocating temporary - // VGImage's for pixmap filters. The "keepData" object will not - // be reclaimed if reclaimSpace() needs to be called. - virtual VGImage createTemporaryImage(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality, - QVGPixmapData *keepData = 0); - - // Create a new VGImage with the specified parameters and associate - // it with "data". The QVGPixmapData will be notified when the - // VGImage needs to be reclaimed by the pool. - // - // This function will call reclaimSpace() when vgCreateImage() fails. - virtual VGImage createImageForPixmap(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality, - QVGPixmapData *data); - - // Create a permanent VGImage with the specified parameters. - // If there is insufficient space for the vgCreateImage call, - // then this function will call reclaimSpace() and try again. - // - // The caller is responsible for calling vgDestroyImage() - // when it no longer needs the VGImage, as the image is not - // recorded in the image pool. - // - // This function is typically used for pattern brushes where - // the OpenVG engine is responsible for managing the lifetime - // of the VGImage, destroying it automatically when the brush - // is no longer in use. - virtual VGImage createPermanentImage(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality); - - // Release a VGImage that is no longer required. - virtual void releaseImage(QVGPixmapData *data, VGImage image); - - // Notify the pool that a QVGPixmapData object is using - // an image again. This allows the pool to move the image - // within a least-recently-used list of QVGPixmapData objects. - virtual void useImage(QVGPixmapData *data); - - // Notify the pool that the VGImage's associated with a - // QVGPixmapData are being detached from the pool. The caller - // will become responsible for calling vgDestroyImage(). - virtual void detachImage(QVGPixmapData *data); - - // Reclaim space for an image allocation with the specified parameters. - // Returns true if space was reclaimed, or false if there is no - // further space that can be reclaimed. The "data" parameter - // indicates the pixmap that is trying to obtain space which should - // not itself be reclaimed. - virtual bool reclaimSpace(VGImageFormat format, - VGint width, VGint height, - QVGPixmapData *data); - - // Hibernate the image pool because the context is about to be - // destroyed. All VGImage's left in the pool should be released. - virtual void hibernate(); - -protected: - // Helper functions for managing the LRU list of QVGPixmapData objects. - void moveToHeadOfLRU(QVGPixmapData *data); - void removeFromLRU(QVGPixmapData *data); - QVGPixmapData *pixmapLRU(); - -private: - QScopedPointer<QVGImagePoolPrivate> d_ptr; - - Q_DECLARE_PRIVATE(QVGImagePool) - Q_DISABLE_COPY(QVGImagePool) -}; - -QT_END_NAMESPACE - -#endif |