* @see org.eclipse.swt.events.PaintListener#paintControl(org.eclipse.swt.events.PaintEvent)
*/
public void paintControl(PaintEvent event) {
GC gc = event.gc;
Transform transform = null;
if (orientation == SWT.VERTICAL) {
transform = new Transform(event.display);
transform.translate(TrimUtil.TRIM_DEFAULT_HEIGHT, 0);
transform.rotate(90);
}
ILabelProvider labelProvider = (ILabelProvider) getLabelProvider();
int itemCount = Math.min(displayedItems.length, numShowItems);
int yOffset = 0;
int xOffset = 0;
if (numShowItems == 1) {//If there is a single item try to center it
Rectangle clientArea = canvas.getParent().getClientArea();
if (orientation == SWT.HORIZONTAL) {
int size = clientArea.height;
yOffset = size - (fontMetrics.getHeight());
yOffset = yOffset / 2;
} else {
int size = clientArea.width;
xOffset = size - (fontMetrics.getHeight());
xOffset = xOffset / 2;
}
}
for (int i = 0; i < itemCount; i++) {
String string = labelProvider.getText(displayedItems[i]);
if(string == null) {
string = "";//$NON-NLS-1$
}
if (orientation == SWT.HORIZONTAL) {
gc.drawString(string, 2, yOffset + (i * fontMetrics.getHeight()), true);
} else {
gc.setTransform(transform);
gc.drawString(string, xOffset + (i * fontMetrics.getHeight()), 2, true);
}
}
if (transform != null)
transform.dispose();
}
});
}