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Diffstat (limited to 'src/openvg/qvgimagepool.cpp')
| -rw-r--r-- | src/openvg/qvgimagepool.cpp | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/src/openvg/qvgimagepool.cpp b/src/openvg/qvgimagepool.cpp deleted file mode 100644 index 3a187b0112..0000000000 --- a/src/openvg/qvgimagepool.cpp +++ /dev/null @@ -1,233 +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. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qvgimagepool_p.h" -#include "qpixmapdata_vg_p.h" - -QT_BEGIN_NAMESPACE - -static QVGImagePool *qt_vg_image_pool = 0; - -class QVGImagePoolPrivate -{ -public: - QVGImagePoolPrivate() : lruFirst(0), lruLast(0) {} - - QVGPixmapData *lruFirst; - QVGPixmapData *lruLast; -}; - -QVGImagePool::QVGImagePool() - : d_ptr(new QVGImagePoolPrivate()) -{ -} - -QVGImagePool::~QVGImagePool() -{ -} - -QVGImagePool *QVGImagePool::instance() -{ - if (!qt_vg_image_pool) - qt_vg_image_pool = new QVGImagePool(); - return qt_vg_image_pool; -} - -void QVGImagePool::setImagePool(QVGImagePool *pool) -{ - if (qt_vg_image_pool != pool) - delete qt_vg_image_pool; - qt_vg_image_pool = pool; -} - -VGImage QVGImagePool::createTemporaryImage(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality, - QVGPixmapData *keepData) -{ - VGImage image; - do { - image = vgCreateImage(format, width, height, allowedQuality); - if (image != VG_INVALID_HANDLE) - return image; - } while (reclaimSpace(format, width, height, keepData)); - qWarning("QVGImagePool: cannot reclaim sufficient space for a %dx%d temporary image", - width, height); - return VG_INVALID_HANDLE; -} - -VGImage QVGImagePool::createImageForPixmap(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality, - QVGPixmapData *data) -{ - VGImage image; - do { - image = vgCreateImage(format, width, height, allowedQuality); - if (image != VG_INVALID_HANDLE) { - if (data) - moveToHeadOfLRU(data); - return image; - } - } while (reclaimSpace(format, width, height, data)); - qWarning("QVGImagePool: cannot reclaim sufficient space for a %dx%d pixmap", - width, height); - return VG_INVALID_HANDLE; -} - -VGImage QVGImagePool::createPermanentImage(VGImageFormat format, - VGint width, VGint height, - VGbitfield allowedQuality) -{ - VGImage image; - do { - image = vgCreateImage(format, width, height, allowedQuality); - if (image != VG_INVALID_HANDLE) - return image; - } while (reclaimSpace(format, width, height, 0)); - qWarning("QVGImagePool: cannot reclaim sufficient space for a %dx%d image", - width, height); - return VG_INVALID_HANDLE; -} - -void QVGImagePool::releaseImage(QVGPixmapData *data, VGImage image) -{ - // Very simple strategy at the moment: just destroy the image. - if (data) - removeFromLRU(data); - vgDestroyImage(image); -} - -void QVGImagePool::useImage(QVGPixmapData *data) -{ - moveToHeadOfLRU(data); -} - -void QVGImagePool::detachImage(QVGPixmapData *data) -{ - removeFromLRU(data); -} - -bool QVGImagePool::reclaimSpace(VGImageFormat format, - VGint width, VGint height, - QVGPixmapData *data) -{ - Q_UNUSED(format); // For future use in picking the best image to eject. - Q_UNUSED(width); - Q_UNUSED(height); - - bool succeeded = false; - bool wasInLRU = false; - if (data) { - wasInLRU = data->inLRU; - moveToHeadOfLRU(data); - } - - QVGPixmapData *lrudata = pixmapLRU(); - if (lrudata && lrudata != data) { - lrudata->reclaimImages(); - succeeded = true; - } - - if (data && !wasInLRU) - removeFromLRU(data); - - return succeeded; -} - -void QVGImagePool::hibernate() -{ - Q_D(QVGImagePool); - QVGPixmapData *pd = d->lruLast; - while (pd) { - QVGPixmapData *prevLRU = pd->prevLRU; - pd->inImagePool = false; - pd->inLRU = false; - pd->nextLRU = 0; - pd->prevLRU = 0; - pd->hibernate(); - pd = prevLRU; - } - d->lruFirst = 0; - d->lruLast = 0; -} - -void QVGImagePool::moveToHeadOfLRU(QVGPixmapData *data) -{ - Q_D(QVGImagePool); - if (data->inLRU) { - if (!data->prevLRU) - return; // Already at the head of the list. - removeFromLRU(data); - } - data->inLRU = true; - data->nextLRU = d->lruFirst; - data->prevLRU = 0; - if (d->lruFirst) - d->lruFirst->prevLRU = data; - else - d->lruLast = data; - d->lruFirst = data; -} - -void QVGImagePool::removeFromLRU(QVGPixmapData *data) -{ - Q_D(QVGImagePool); - if (!data->inLRU) - return; - if (data->nextLRU) - data->nextLRU->prevLRU = data->prevLRU; - else - d->lruLast = data->prevLRU; - if (data->prevLRU) - data->prevLRU->nextLRU = data->nextLRU; - else - d->lruFirst = data->nextLRU; - data->inLRU = false; -} - -QVGPixmapData *QVGImagePool::pixmapLRU() -{ - Q_D(QVGImagePool); - return d->lruLast; -} - -QT_END_NAMESPACE |