public void draw(Graphics2D g) {
update();
g.setStroke(new BasicStroke(penSize));
if (color != null) link.setColor(color);
else link.setColor(Color.black);
link.draw(g);
}
public void update() {
initializeLink(0);
source.updateAnchors();
target.updateAnchors();
link.setStartAnchor(source.getAnchor(sourceAnchorKey));
link.setEndAnchor(target.getAnchor(targetAnchorKey));
link.setLabel(pattern);
link.setSelfLoop(source == target);
link.update();
}
public void toggleShape() {
switch (shape) {
case SHAPE_ARC:
shape = SHAPE_ELBOW;
break;
case SHAPE_ELBOW:
shape = SHAPE_ARC;
break;
case SHAPE_BEZIER:
// Cannot toggle a bezier link
return;
}
double flateness = link.getFlateness();
Vector2D direction = link.getDirection();
link = createLinkInstance();
link.setFlateness(flateness);
link.setDirection(direction);
}
public GLink(
GElement source,
String sourceAnchorKey,
GElement target,
String targetAnchorKey,
int shape,
String pattern,
double flateness) {
this.source = source;
this.target = target;
this.sourceAnchorKey = sourceAnchorKey;
this.targetAnchorKey = targetAnchorKey;
this.shape = shape;
this.pattern = pattern;
initializeLink(flateness);
if (source == target) link.setDirection(new Vector2D(0, 1));
else link.setDirection(source.getPosition().sub(target.getPosition()));
setSourceTangentOffset(source.getDefaultAnchorOffset(sourceAnchorKey));
setTargetTangentOffset(target.getDefaultAnchorOffset(targetAnchorKey));
}
public void drawShape(Graphics2D g) {
link.drawShape(g);
}
public boolean isInside(Point p) {
if (link == null) return false;
else return link.contains(p.x, p.y);
}
public Rect getFrame() {
update();
return link.getFrame();
}
public void setMousePosition(Point mouse) {
link.setDirection(Vector2D.vector(mouse).sub(target.getPosition()));
link.setMousePosition(Vector2D.vector(mouse));
}
public boolean isLabelVisible() {
if (link == null) return false;
else return link.isLabelVisible();
}
public void setLabelColor(Color color) {
link.setLabelColor(color);
}
public void setLabelVisible(boolean flag) {
if (link != null) link.setLabelVisible(flag);
}
public void setTargetOffset(Vector2D offset) {
link.setEndOffset(offset);
}
public void setSourceOffset(Vector2D offset) {
link.setStartOffset(offset);
}
public void setTargetTangentOffset(double offset) {
link.setEndTangentOffset(offset);
}
public void setSourceTangentOffset(double offset) {
link.setStartTangentOffset(offset);
}
protected void initializeLink(double flateness) {
if (link == null) {
link = createLinkInstance();
link.setFlateness(flateness);
}
}
