/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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****************************************************************************/


#include <qqmlextensionplugin.h>

#include <qqmlengine.h>
#include <qquickimageprovider.h>
#include <QImage>
#include <QPainter>

//![0]
class ColorImageProvider : public QQuickImageProvider
{
public:
    ColorImageProvider()
        : QQuickImageProvider(QQuickImageProvider::Pixmap)
    {
    }

    QPixmap requestPixmap(const QString &id, QSize *size, const QSize &requestedSize)
    {
        int width = 100;
        int height = 50;

        if (size)
            *size = QSize(width, height);
        QPixmap pixmap(requestedSize.width() > 0 ? requestedSize.width() : width,
                       requestedSize.height() > 0 ? requestedSize.height() : height); 
        pixmap.fill(QColor(id).rgba());
//![0]

        // write the color name
        QPainter painter(&pixmap);
        QFont f = painter.font();
        f.setPixelSize(20);
        painter.setFont(f);
        painter.setPen(Qt::black);
        if (requestedSize.isValid())
            painter.scale(requestedSize.width() / width, requestedSize.height() / height);
        painter.drawText(QRectF(0, 0, width, height), Qt::AlignCenter, id);

//![1]
        return pixmap;
    }
};
//![1]


class ImageProviderExtensionPlugin : public QQmlExtensionPlugin
{
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
public:
    void registerTypes(const char *uri)
    {
        Q_UNUSED(uri);
    }

    void initializeEngine(QQmlEngine *engine, const char *uri)
    {
        Q_UNUSED(uri);
        engine->addImageProvider("colors", new ColorImageProvider);
    }

};


#define QQmlExtensionInterface_iid "org.qt-project.Qt.QQmlExtensionInterface"


#include "imageprovider.moc"
