Fitting an ImageView into a TreeTableCell

I am using a JFXTreeTableView which has a column which displays images. The column is constucted like this:

JFXTreeTableColumn<MyLog, ImageView> statusColumn = new JFXTreeTableColumn<>("Status");
statusColumn.setCellValueFactory((TreeTableColumn.CellDataFeatures<MyLog, ImageView> param) -> {
    return param.getValue().getValue().statusImage;
});

The class MyLog looks like this:

public class MyLog extends RecursiveTreeObject<MyLog> {


    // more properties...
    public ObjectProperty<ImageView> statusImage = new SimpleObjectProperty<ImageView>();

    public MyLog(String imagePath)
    {
        statusImage.set(new ImageView(new Image(MyProject.class.getResourceAsStream(imagePath))));
    }
}

The image I am trying to display is this one:

However, the image is not fitting into the cell correctly. This is how the table looks:

How can I make the image fit into the cell without modifing the image itself?

You should seperate the data you want to display (Image) and the way it's displayed (ImageView).

This is done by modifying MyLog's statusImage property to contain type Image and using a cellFactory that returns TreeTableCells that use ImageViews to display the images.

public class MyLog extends RecursiveTreeObject<MyLog> {

    // more properties...

    public final ObjectProperty<Image> statusImage;

    public MyLog(String imagePath) {
        this(new Image(MyProject.class.getResourceAsStream(imagePath)));
    }

    /**
     * Constructor for passing Image objects.
     * (Could be helpful to reuse Images to reduce the footprint.)
     */
    public MyLog(Image statusImage) {
        this.statusImage = new SimpleObjectProperty(statusImage);
    }

}

statusColumn.setCellFactory(column -> new JFXTreeTableCell<MyLog, Image>() {

    private final ImageView imageView;

    {
        imageView = new ImageView();
        imageView.setFitWidth(20);
        imageView.setFitHeight(20);
        setGraphic(imageView);
    }

    @Override
    protected void updateItem(Image item, boolean empty) {
        super.updateItem(item, empty);
        imageView.setImage(item);
    }
});