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pixeldelegate.h Example File
^{itemviews/pixelator/pixeldelegate.h}

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    #ifndef PIXELDELEGATE_H
    #define PIXELDELEGATE_H

    #include <QAbstractItemDelegate>
    #include <QFontMetrics>
    #include <QModelIndex>
    #include <QSize>

    class QAbstractItemModel;
    class QObject;
    class QPainter;

    static const int ItemSize = 256;

    class PixelDelegate : public QAbstractItemDelegate
    {
        Q_OBJECT

    public:
        PixelDelegate(QObject *parent = 0);

        void paint(QPainter *painter, const QStyleOptionViewItem &option,
                   const QModelIndex &index) const;

        QSize sizeHint(const QStyleOptionViewItem &option,
                       const QModelIndex &index ) const;

    public slots:
        void setPixelSize(int size);

    private:
        int pixelSize;
    };

    #endif