* Called when a rendering started.
*/
public void gvtRenderingStarted(GVTTreeRendererEvent e) {
if (progressivePaint && !doubleBufferedRendering) {
image = e.getImage();
progressivePaintThread = new HaltingThread() {
public void run() {
final Thread thisThread = this;
try {
while (!hasBeenHalted()) {
EventQueue.invokeLater(new Runnable() {