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+/****************************************************************************
+**
+** 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 demonstration applications 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 <QApplication>
+
+#include <qmlengine.h>
+#include <qmlcontext.h>
+#include <qml.h>
+#include <qmlgraphicsitem.h>
+#include <qmlimageprovider.h>
+#include <qmlview.h>
+#include <QImage>
+#include <QPainter>
+
+/*
+ This example illustrates using a QmlImageProvider to serve
+ images asynchronously.
+*/
+
+//![0]
+class ColorImageProvider : public QmlImageProvider
+{
+public:
+ // This is run in a low priority thread.
+ QImage request(const QString &id) {
+ QImage image(100, 50, QImage::Format_RGB32);
+ image.fill(QColor(id).rgba());
+ QPainter p(&image);
+ p.setPen(Qt::black);
+ p.drawText(QRectF(0,0,100,50),Qt::AlignCenter,id);
+ return image;
+ }
+};
+
+int main(int argc, char ** argv)
+{
+ QApplication app(argc, argv);
+
+ QmlView view;
+ view.setSource(QUrl("qrc:view.qml"));
+
+ view.engine()->addImageProvider("colors", new ColorImageProvider);
+
+ QStringList dataList;
+ dataList.append("image://colors/red");
+ dataList.append("image://colors/green");
+ dataList.append("image://colors/blue");
+ dataList.append("image://colors/brown");
+ dataList.append("image://colors/orange");
+ dataList.append("image://colors/purple");
+ dataList.append("image://colors/yellow");
+
+ QmlContext *ctxt = view.rootContext();
+ ctxt->setContextProperty("myModel", QVariant::fromValue(dataList));
+
+ view.execute();
+ view.show();
+
+ return app.exec();
+}
+//![0]