diff -r b72c6db6890b -r 5dc02b23752f src/declarative/qml/qdeclarativeimageprovider.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/declarative/qml/qdeclarativeimageprovider.cpp Tue Jul 06 15:10:48 2010 +0300 @@ -0,0 +1,84 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdeclarativeimageprovider.h" + +QT_BEGIN_NAMESPACE + +/*! + \class QDeclarativeImageProvider + \since 4.7 + \brief The QDeclarativeImageProvider class provides an interface for threaded image requests in QML. + + QDeclarativeImageProvider can be used by a QDeclarativeEngine to provide images to QML asynchronously. + The image request will be run in a low priority thread, allowing potentially costly image + loading to be done in the background, without affecting the performance of the UI. + + See the QDeclarativeEngine::addImageProvider() documentation for an + example of how a custom QDeclarativeImageProvider can be constructed and used. + + \note the request() method may be called by multiple threads, so ensure the + implementation of this method is reentrant. + + \sa QDeclarativeEngine::addImageProvider() +*/ + +/*! + Destroys the image provider. + */ +QDeclarativeImageProvider::~QDeclarativeImageProvider() +{ +} + +/*! + \fn QImage QDeclarativeImageProvider::request(const QString &id, QSize *size, const QSize& requestedSize) + + Implement this method to return the image with \a id. + + If \a requestedSize is a valid size, the image returned should be of that size. + + In all cases, \a size must be set to the original size of the image. + + \note this method may be called by multiple threads, so ensure the + implementation of this method is reentrant. +*/ + +QT_END_NAMESPACE