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authorEskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>2011-11-18 10:24:32 +0100
committerQt by Nokia <qt-info@nokia.com>2012-01-20 14:17:41 +0100
commitc274ea7cf5e11ade0a5812e3080baa671d012524 (patch)
tree86ebcf918989dc674b0e82700cf0c123ba44e49e /src/gui/kernel/qplatformsharedgraphicscache_qpa.h
parent47d5d349d8f5bc590ca7cdf30bf13b69bddf3225 (diff)
Introducing QPlatformSharedGraphicsCache
Interface to provide cross-process caching mechanisms in a platform plugin. Can be used for shared glyph caches and icon caches etc. Change-Id: If0d89a0a50bbd6eee05daf908448262ff270fc5b Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>
Diffstat (limited to 'src/gui/kernel/qplatformsharedgraphicscache_qpa.h')
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1 files changed, 97 insertions, 0 deletions
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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 QtGui 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 QPLATFORMSHAREDGRAPHICSCACHE_QPA_H
+#define QPLATFORMSHAREDGRAPHICSCACHE_QPA_H
+
+#include <QtCore/qobject.h>
+#include <QtGui/qimage.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class Q_GUI_EXPORT QPlatformSharedGraphicsCache: public QObject
+{
+ Q_OBJECT
+public:
+ enum PixelFormat
+ {
+ Alpha8
+ };
+
+ enum BufferType
+ {
+ OpenGLTexture
+ };
+
+ QPlatformSharedGraphicsCache(QObject *parent = 0) : QObject(parent) {}
+
+ Q_INVOKABLE virtual void ensureCacheInitialized(const QByteArray &cacheId, BufferType bufferType,
+ PixelFormat pixelFormat) = 0;
+
+ Q_INVOKABLE virtual void requestItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0;
+ Q_INVOKABLE virtual void insertItems(const QByteArray &cacheId,
+ const QVector<quint32> &itemIds,
+ const QVector<QImage> &items) = 0;
+ Q_INVOKABLE virtual void releaseItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0;
+
+ virtual void serializeBuffer(void *bufferId, QByteArray *serializedData, int *fileDescriptor) const = 0;
+ virtual uint textureIdForBuffer(void *bufferId) = 0;
+ virtual void referenceBuffer(void *bufferId) = 0;
+ virtual bool dereferenceBuffer(void *bufferId) = 0;
+
+Q_SIGNALS:
+ void itemsMissing(const QByteArray &cacheId, const QVector<quint32> &itemIds);
+ void itemsAvailable(const QByteArray &cacheId, void *bufferId, const QSize &bufferSize,
+ const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
+ void itemsInvalidated(const QByteArray &cacheId, const QVector<quint32> &itemIds);
+ void itemsUpdated(const QByteArray &cacheId, void *bufferId, const QSize &bufferSize,
+ const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QPLATFORMSHAREDGRAPHICSCACHE_QPA_H