public Rectangle2D.Double calculateLayout(
CompositeFigure compositeFigure, Point2D.Double anchor, Point2D.Double lead) {
Rectangle2D.Double bounds = null;
for (Figure child : compositeFigure.getChildren()) {
Locator locator = getLocator(child);
Rectangle2D.Double r;
if (locator == null) {
r = child.getBounds();
} else {
Point2D.Double p = locator.locate(compositeFigure);
Dimension2DDouble d = child.getPreferredSize();
r = new Rectangle2D.Double(p.x, p.y, d.width, d.height);
}
if (!r.isEmpty()) {
if (bounds == null) {
bounds = r;
} else {
bounds.add(r);
}
}
}
return (bounds == null) ? new Rectangle2D.Double() : bounds;
}
private Figure findConnectableFigure(Point2D.Double p, Drawing drawing) {
for (Figure f : drawing.getFiguresFrontToBack()) {
if (!f.includes(getOwner()) && f.canConnect() && f.contains(p)) {
return f;
}
}
return null;
}
private Connector findConnectionTarget(Point2D.Double p, Drawing drawing) {
Figure targetFigure = findConnectableFigure(p, drawing);
if (getSource() == null && targetFigure != null) {
return findConnector(p, targetFigure, getOwner());
} else if (targetFigure != null) {
Connector target = findConnector(p, targetFigure, getOwner());
if ((targetFigure != null)
&& targetFigure.canConnect()
&& targetFigure != savedTarget
&& !targetFigure.includes(getOwner())
&& (canConnect(getSource(), target)
|| getTarget() != null && getTarget().getOwner() == targetFigure)) {
return target;
}
}
return null;
}
public Rectangle2D.Double layout(
CompositeFigure compositeFigure, Point2D.Double anchor, Point2D.Double lead) {
Rectangle2D.Double bounds = null;
for (Figure child : compositeFigure.getChildren()) {
Locator locator = getLocator(child);
Rectangle2D.Double r;
if (locator == null) {
r = child.getBounds();
} else {
Point2D.Double p = locator.locate(compositeFigure, child);
Dimension2DDouble d = child.getPreferredSize();
r = new Rectangle2D.Double(p.x, p.y, d.width, d.height);
}
child.willChange();
child.setBounds(
new Point2D.Double(r.getMinX(), r.getMinY()),
new Point2D.Double(r.getMaxX(), r.getMaxY()));
child.changed();
if (!r.isEmpty()) {
if (bounds == null) {
bounds = r;
} else {
bounds.add(r);
}
}
}
return (bounds == null) ? new Rectangle2D.Double() : bounds;
}
/**
* All other write methods delegate their work to here.
*/
public void write(OutputStream out, java.util.List<Figure> figures) throws IOException {
Rectangle2D.Double drawingRect = null;
for (Figure f : figures) {
if (drawingRect == null) {
drawingRect = f.getBounds();
} else {
drawingRect.add(f.getBounds());
}
}
AffineTransform drawingTransform = new AffineTransform();
drawingTransform.translate(
-Math.min(0, drawingRect.x),
-Math.min(0, drawingRect.y)
);
write(out, figures, drawingTransform,
new Dimension(
(int) (Math.abs(drawingRect.x) + drawingRect.width),
(int) (Math.abs(drawingRect.y) + drawingRect.height))
);
}
protected Point2D.Double chop(Figure target, Point2D.Double from) {
target = getConnectorTarget(target);
Rectangle2D.Double r = target.getBounds();
if (STROKE_COLOR.get(target) != null) {
double grow;
switch (STROKE_PLACEMENT.get(target)) {
case CENTER:
default:
grow = AttributeKeys.getStrokeTotalWidth(target) / 2d;
break;
case OUTSIDE:
grow = AttributeKeys.getStrokeTotalWidth(target);
break;
case INSIDE:
grow = 0d;
break;
}
Geom.grow(r, grow, grow);
}
return Geom.angleToPoint(r, Geom.pointToAngle(r, from));
}
/**
* Updates the list of connectors that we draw when the user moves or drags the mouse over a
* figure to which can connect.
*/
public void repaintConnectors() {
Rectangle2D.Double invalidArea = null;
for (Connector c : connectors) {
if (invalidArea == null) {
invalidArea = c.getDrawingArea();
} else {
invalidArea.add(c.getDrawingArea());
}
}
connectors =
(connectableFigure == null)
? new java.util.LinkedList<Connector>()
: connectableFigure.getConnectors(getOwner());
for (Connector c : connectors) {
if (invalidArea == null) {
invalidArea = c.getDrawingArea();
} else {
invalidArea.add(c.getDrawingArea());
}
}
if (invalidArea != null) {
view.getComponent().repaint(view.drawingToView(invalidArea));
}
}
protected Connector findConnector(Point2D.Double p, Figure f, ConnectionFigure prototype) {
return f.findConnector(p, prototype);
}