Qt 4.0: imagemodel.cpp Example File (itemviews/pixelator/imagemodel.cpp)

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

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        ** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
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    ** and appearing in the file LICENSE.GPL included in the packaging of
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        #include <QtGui>

        #include "imagemodel.h"

        ImageModel::ImageModel(const QImage &image, QObject *parent)
            : QAbstractTableModel(parent)
        {
            modelImage = QImage(image);
        }

        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())
                return QVariant();
            else if (role == Qt::ToolTipRole)
                return QVariant();

            return qGray(modelImage.pixel(index.column(), index.row()));
        }