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# imagemodel.cpp Example File
itemviews/pixelator/imagemodel.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2004-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #include <QtGui>

    #include "imagemodel.h"

    ImageModel::ImageModel(QObject *parent)
        : QAbstractTableModel(parent)
    {
    }

    void ImageModel::setImage(const QImage &image)
    {
        modelImage = image;
        reset();
    }

    int ImageModel::rowCount(const QModelIndex & /* parent */) const
    {
        return modelImage.height();
    }

    int ImageModel::columnCount(const QModelIndex & /* parent */) const
    {
        return modelImage.width();
    }

    QVariant ImageModel::data(const QModelIndex &index, int role) const
    {
        if (!index.isValid() || role != Qt::DisplayRole)
            return QVariant();
        return qGray(modelImage.pixel(index.column(), index.row()));
    }

    QVariant ImageModel::headerData(int /* section */,
                                    Qt::Orientation /* orientation */,
                                    int role) const
    {
        if (role == Qt::SizeHintRole)
            return QSize(1, 1);
        return QVariant();
    }