private Rectangle fieldBounds(Figure figure) {
Rectangle box = figure.displayBox();
int nChars = Math.max(20, getURL(figure).length());
Dimension d = fTextField.getPreferredSize(nChars);
box.x = Math.max(0, box.x + (box.width - d.width) / 2);
box.y = Math.max(0, box.y + (box.height - d.height) / 2);
return new Rectangle(box.x, box.y, d.width, d.height);
}
public void drawingInvalidated(DrawingChangeEvent e) {
Rectangle r = e.getInvalidatedRectangle();
if (getDamage() == null) {
setDamage(r);
} else {
// don't manipulate rectangle returned by getDamage() directly
// because it could be a cloned rectangle.
Rectangle damagedR = getDamage();
damagedR.add(r);
setDamage(damagedR);
}
}
/** Finds a top level Figure that intersects the given rectangle. */
public Figure findFigure(Rectangle r) {
FigureEnumeration k = figuresReverse();
while (k.hasMoreElements()) {
Figure figure = k.nextFigure();
Rectangle fr = figure.displayBox();
if (r.intersects(fr)) return figure;
}
return null;
}
/**
* Finds a top level Figure that intersects the given rectangle. It supresses the passed in
* figure. Use this method to ignore a figure that is temporarily inserted into the drawing.
*/
public Figure findFigure(Rectangle r, Figure without) {
if (without == null) return findFigure(r);
FigureEnumeration k = figuresReverse();
while (k.hasMoreElements()) {
Figure figure = k.nextFigure();
Rectangle fr = figure.displayBox();
if (r.intersects(fr) && !figure.includes(without)) return figure;
}
return null;
}
public void basicMoveBy(int x, int y) {
fDisplayBox.translate(x, y);
}
public void basicDisplayBox(Point origin, Point corner) {
fDisplayBox = new Rectangle(origin);
fDisplayBox.add(corner);
}