public void overlay(Graphics g) {
if (!firstOverlayInvocation) {
if (cachedBounds != null) {
g.setColor(Color.black);
Rectangle2D tmp = graph.toScreen((Rectangle2D) cachedBounds.clone());
g.drawRect(
(int) tmp.getX(),
(int) tmp.getY(),
(int) tmp.getWidth() - 2,
(int) tmp.getHeight() - 2);
} else if (!initialBounds.equals(vertex.getBounds())) {
Graphics2D g2 = (Graphics2D) g;
AffineTransform oldTransform = g2.getTransform();
g2.scale(graph.getScale(), graph.getScale());
graph.getUI().paintCell(g, vertex, vertex.getBounds(), true);
if (contextViews != null) {
for (int i = 0; i < contextViews.length; i++) {
graph.getUI().paintCell(g, contextViews[i], contextViews[i].getBounds(), true);
}
}
if (!graph.isPortsScaled()) g2.setTransform(oldTransform);
if (portViews != null && graph.isPortsVisible()) graph.getUI().paintPorts(g, portViews);
g2.setTransform(oldTransform);
}
}
firstOverlayInvocation = false;
}
private boolean drawComposite(Rectangle2D bounds, ImageObserver observer) {
// Clip source to visible areas that need updating
Rectangle2D clip = this.getClipBounds();
Rectangle2D.intersect(bounds, clip, bounds);
clip =
new Rectangle(
buffer.getMinX(), buffer.getMinY(),
buffer.getWidth(), buffer.getHeight());
Rectangle2D.intersect(bounds, clip, bounds);
BufferedImage buffer2 = buffer;
if (!bounds.equals(buffer2.getRaster().getBounds()))
buffer2 =
buffer2.getSubimage(
(int) bounds.getX(),
(int) bounds.getY(),
(int) bounds.getWidth(),
(int) bounds.getHeight());
// Get destination clip to bounds
double[] points =
new double[] {
bounds.getX(), bounds.getY(),
bounds.getMaxX(), bounds.getMaxY()
};
transform.transform(points, 0, points, 0, 2);
Rectangle2D deviceBounds =
new Rectangle2D.Double(points[0], points[1], points[2] - points[0], points[3] - points[1]);
Rectangle2D.intersect(deviceBounds, this.getClipInDevSpace(), deviceBounds);
// Get current image on the component
GtkImage img = grab(component);
Graphics gr = componentBuffer.createGraphics();
gr.drawImage(img, 0, 0, null);
gr.dispose();
BufferedImage cBuffer = componentBuffer;
if (!deviceBounds.equals(cBuffer.getRaster().getBounds()))
cBuffer =
cBuffer.getSubimage(
(int) deviceBounds.getX(),
(int) deviceBounds.getY(),
(int) deviceBounds.getWidth(),
(int) deviceBounds.getHeight());
// Perform actual composite operation
compCtx.compose(buffer2.getRaster(), cBuffer.getRaster(), cBuffer.getRaster());
// This MUST call directly into the "action" method in CairoGraphics2D,
// not one of the wrappers, to ensure that the composite isn't processed
// more than once!
boolean rv =
super.drawImage(
cBuffer,
AffineTransform.getTranslateInstance(bounds.getX(), bounds.getY()),
null,
null);
return rv;
}