imagemodel.cpp Example File

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  #include "imagemodel.h"

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

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

  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();
  }