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

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     #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();
     }