| package org.eclipse.uml2.diagram.common.draw2d; |
| |
| import org.eclipse.draw2d.BorderLayout; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.MarginBorder; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| |
| |
| public class SplitEllipseLayout extends BorderLayout { |
| private int myXMargin; |
| |
| private int myYMargin; |
| |
| @Override |
| public void layout(IFigure container) { |
| Rectangle r = container.getBounds(); |
| double a = r.width / 2; |
| double b = r.height / 2; |
| double sin45 = Math.sqrt(2) / 2; |
| double cos45 = sin45; |
| double diagx = a * sin45; |
| double diagy = b * cos45; |
| int newxmargin = (int) (a - diagx); |
| int newymargin = (int) (b - diagy); |
| if (newxmargin != myXMargin || newymargin != myYMargin) { |
| myXMargin = newxmargin; |
| myYMargin = newymargin; |
| container.setBorder(new MarginBorder(myYMargin, myXMargin, myYMargin, myXMargin)); |
| } |
| super.layout(container); |
| } |
| |
| } |
