/**
* Places the given end label below the edge.
*
* @param node source node of the edge the label belongs to.
* @param label the label to place.
* @param port the end port of the edge the label is nearest to.
* @param labelSpacing space between objects and labels.
*/
private void placeEndLabelUpwards(
final LNode node, final LLabel label, final LPort port, final double labelSpacing) {
// Remember some stuff
KVector labelPosition = label.getPosition();
KVector absolutePortPosition = KVector.sum(port.getPosition(), port.getNode().getPosition());
KVector absolutePortAnchor = port.getAbsoluteAnchor();
LMargin portMargin = port.getMargin();
// Actually calculate the coordinates
switch (port.getSide()) {
case WEST:
labelPosition.x =
Math.min(absolutePortPosition.x, absolutePortAnchor.x)
- portMargin.left
- label.getSize().x
- labelSpacing;
labelPosition.y = port.getAbsoluteAnchor().y - label.getSize().y - labelSpacing;
break;
case EAST:
labelPosition.x =
Math.max(absolutePortPosition.x + port.getSize().x, absolutePortAnchor.x)
+ portMargin.right
+ labelSpacing;
labelPosition.y = port.getAbsoluteAnchor().y - label.getSize().y - labelSpacing;
break;
case NORTH:
labelPosition.x = port.getAbsoluteAnchor().x + labelSpacing;
labelPosition.y =
Math.min(absolutePortPosition.y, absolutePortAnchor.y)
- portMargin.top
- label.getSize().y
- labelSpacing;
break;
case SOUTH:
labelPosition.x = port.getAbsoluteAnchor().x + labelSpacing;
labelPosition.y =
Math.max(absolutePortPosition.y + port.getSize().y, absolutePortAnchor.y)
+ portMargin.bottom
+ labelSpacing;
break;
}
}
