bundles/org.simantics.diagram.connection/tests/org/simantics/diagram/connection/tests/actions/HighlightReconnectPointsAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.diagram.connection.tests.actions;
  13
  14 import java.awt.Graphics2D;
  15 import java.awt.geom.Line2D;
  16
  17 import org.simantics.diagram.connection.RouteGraph;
  18 import org.simantics.diagram.connection.RouteLineHalf;
  19 import org.simantics.diagram.connection.actions.IAction;
  20 import org.simantics.diagram.connection.rendering.IRouteGraphRenderer;
  21
  22 public class HighlightReconnectPointsAction implements IAction {
  23
  24     public static final double DEGENERATED_LINE_LENGTH = 0.8;
  25     public static final double CROSS_SIZE = 0.5;
  26
  27     RouteGraph rg;
  28     double crossSize;
  29
  30     public HighlightReconnectPointsAction(RouteGraph rg) {
  31         this(rg, CROSS_SIZE);
  32     }
  33
  34     public HighlightReconnectPointsAction(RouteGraph rg, double crossSize) {
  35         this.rg = rg;
  36         this.crossSize = crossSize;
  37     }
  38
  39     @Override
  40     public void render(Graphics2D g, IRouteGraphRenderer renderer, double mouseX, double mouseY) {
  41         renderer.render(g, rg);
  42         for(RouteLineHalf lh : rg.getLineHalves()) {
  43             if(lh.getLine().getLength() < DEGENERATED_LINE_LENGTH)
  44                 continue;
  45             double x = lh.getLink().getX();
  46             double y = lh.getLink().getY();
  47             if(lh.getLine().isHorizontal()) {
  48                 if(lh.getLink() == lh.getLine().getBegin())
  49                     x += crossSize*2;
  50                 else
  51                     x -= crossSize*2;
  52             }
  53             else {
  54                 if(lh.getLink() == lh.getLine().getBegin())
  55                     y += crossSize*2;
  56                 else
  57                     y -= crossSize*2;
  58             }
  59             g.draw(new Line2D.Double(x-crossSize,y-crossSize,x+crossSize,y+crossSize));
  60             g.draw(new Line2D.Double(x-crossSize,y+crossSize,x+crossSize,y-crossSize));
  61         }
  62     }
  63
  64 }