public void mousePressed(MouseEvent event) {
int x = event.getX() / panel.getZoom();
int y = event.getY() / panel.getZoom();
try {
if (event.isControlDown() || SwingUtilities.isRightMouseButton(event)) {
// treat right-clicks and control-left-clicks as the same (for Mac users)
if (event.isShiftDown()) {
list.deleteAll(x, y);
} else {
list.delete(x, y);
}
} else {
if (event.isShiftDown()) {
list.lower(x, y);
} else {
list.raise(x, y);
}
}
// repaint all of the tiles
panel.clear();
Graphics g = panel.getGraphics();
list.drawAll(g);
} catch (RuntimeException e) {
if (CATCH_EXCEPTIONS) {
e.printStackTrace(System.err);
} else {
throw e;
}
}
}