public void doLayout() {
if (view != null) {
view.setSize(view.getPreferredSize());
visibleRect = getVisibleRect();
view.setLocation(visibleRect.x, visibleRect.y);
}
glassPane.setLocation(0, 0);
glassPane.setSize(getWidth(), getHeight());
}
private static Pair<Image, Point> createDragImage(
final Tree tree, final Component c, Point dragOrigin, boolean adjustToPathUnderDragOrigin) {
if (c instanceof JComponent) {
((JComponent) c).setOpaque(true);
}
c.setForeground(tree.getForeground());
c.setBackground(tree.getBackground());
c.setFont(tree.getFont());
c.setSize(c.getPreferredSize());
final BufferedImage image =
new BufferedImage(c.getWidth(), c.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = (Graphics2D) image.getGraphics();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.7f));
c.paint(g2);
g2.dispose();
Point point = new Point(-image.getWidth(null) / 2, -image.getHeight(null) / 2);
if (adjustToPathUnderDragOrigin) {
TreePath path = tree.getPathForLocation(dragOrigin.x, dragOrigin.y);
if (path != null) {
Rectangle bounds = tree.getPathBounds(path);
point = new Point(bounds.x - dragOrigin.x, bounds.y - dragOrigin.y);
}
}
return new Pair<Image, Point>(image, point);
}
// not used
public Component add(Component c) {
// System.out.println("Add " + c);
if (c instanceof AbstractButton) {
// System.out.println("Add to button group " + c);
c.setVisible(true);
bg.add((AbstractButton) c);
}
if (c instanceof Anchorable && ((Anchorable) c).isAnchored()) {
c.setSize(c.getPreferredSize());
}
return super.add(c);
}