Eclipse plugin - ColumnLabelProvider display only image - eclipse-plugin

Question

So I am developing an Eclipse plug-in and using ColumnLabelProvider to provide label for the columns of my tree viewer.
However, in one of the columns, I only intend to display an image and no text. However, in the final display, Eclipse reserves blank space for the text element even if I return a null.
Is there any way to make it display only image and in the full space provided?
Here is the code snippet:
column4.setLabelProvider(new ColumnLabelProvider() {
#Override
public String getText(Object element) {
return null;
}
#Override
public Image getImage(Object element) {
/* Code to Display an image follows */
.....
}
});

Answer 1

ColumnLabelProvider will always leave space for the text.
You can use a class derived from OwnerDrawLabelProvider to draw the column yourself.
Something like:
public abstract class CentredImageCellLabelProvider extends OwnerDrawLabelProvider
{
protected CentredImageCellLabelProvider()
{
}
#Override
protected void measure(Event event, Object element)
{
}
#Override
protected void erase(final Event event, final Object element)
{
// Don't call super.erase() to suppress non-standard selection draw
}
#Override
protected void paint(final Event event, final Object element)
{
TableItem item = (TableItem)event.item;
Rectangle itemBounds = item.getBounds(event.index);
GC gc = event.gc;
Image image = getImage(element);
Rectangle imageBounds = image.getBounds();
int x = event.x + Math.max(0, (itemBounds.width - imageBounds.width) / 2);
int y = event.y + Math.max(0, (itemBounds.height - imageBounds.height) / 2);
gc.drawImage(image, x, y);
}
protected abstract Image getImage(Object element);
}