/** Sets the GVT tree to display. */
protected void setGraphicsNode(GraphicsNode gn, boolean createDispatcher) {
gvtRoot = gn;
if (gn != null && createDispatcher) {
initializeEventHandling();
}
if (eventDispatcher != null) {
eventDispatcher.setRootNode(gn);
}
}
/** Renders the GVT tree. */
protected void renderGVTTree() {
Rectangle visRect = getRenderRect();
if (gvtRoot == null || visRect.width <= 0 || visRect.height <= 0) {
return;
}
// Renderer setup.
if (renderer == null || renderer.getTree() != gvtRoot) {
renderer = createImageRenderer();
renderer.setTree(gvtRoot);
}
// Area of interest computation.
AffineTransform inv;
try {
inv = renderingTransform.createInverse();
} catch (NoninvertibleTransformException e) {
throw new IllegalStateException("NoninvertibleTransformEx:" + e.getMessage());
}
Shape s = inv.createTransformedShape(visRect);
// Rendering thread setup.
gvtTreeRenderer =
new GVTTreeRenderer(
renderer,
renderingTransform,
doubleBufferedRendering,
s,
visRect.width,
visRect.height);
gvtTreeRenderer.setPriority(Thread.MIN_PRIORITY);
Iterator it = gvtTreeRendererListeners.iterator();
while (it.hasNext()) {
gvtTreeRenderer.addGVTTreeRendererListener((GVTTreeRendererListener) it.next());
}
// Disable the dispatch during the rendering
// to avoid concurrent access to the GVT tree.
if (eventDispatcher != null) {
eventDispatcher.setEventDispatchEnabled(false);
}
gvtTreeRenderer.start();
}
public void setRenderingTransform(AffineTransform at, boolean performRedraw) {
renderingTransform = new AffineTransform(at);
suspendInteractions = true;
if (eventDispatcher != null) {
try {
eventDispatcher.setBaseTransform(renderingTransform.createInverse());
} catch (NoninvertibleTransformException e) {
handleException(e);
}
}
if (jgvtListeners != null) {
Iterator iter = jgvtListeners.iterator();
ComponentEvent ce =
new ComponentEvent(this, JGVTComponentListener.COMPONENT_TRANSFORM_CHANGED);
while (iter.hasNext()) {
JGVTComponentListener l = (JGVTComponentListener) iter.next();
l.componentTransformChanged(ce);
}
}
if (performRedraw) scheduleGVTRendering();
}