bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SelectionPivotNode.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.scenegraph.g2d.nodes;
  13
  14 import java.awt.BasicStroke;
  15 import java.awt.Color;
  16 import java.awt.Graphics2D;
  17 import java.awt.geom.AffineTransform;
  18 import java.awt.geom.GeneralPath;
  19 import java.awt.geom.Point2D;
  20 import java.awt.geom.Rectangle2D;
  21
  22 import org.simantics.scenegraph.g2d.G2DNode;
  23 import org.simantics.scenegraph.utils.GeometryUtils;
  24
  25 public class SelectionPivotNode extends G2DNode {
  26     /**
  27          *
  28          */
  29         private static final long serialVersionUID = 1382614767907193882L;
  30
  31         public transient static final BasicStroke SELECTION_STROKE = new BasicStroke(1.0f,
  32             BasicStroke.CAP_SQUARE, BasicStroke.CAP_SQUARE, 10.0f);
  33
  34     protected Point2D pivot = null;
  35
  36     @SyncField("pivot")
  37     public void setPivot(Point2D pivot) {
  38         this.pivot = pivot;
  39     }
  40
  41     @Override
  42     public void render(Graphics2D g) {
  43         AffineTransform ot = g.getTransform();
  44
  45         g.setColor(Color.RED);
  46         g.translate(pivot.getX(), pivot.getY());
  47
  48         double scale = GeometryUtils.getScale(g.getTransform());
  49         double scaleRecip = 1.0 / scale;
  50
  51         g.setStroke(GeometryUtils.scaleStroke(SELECTION_STROKE, (float) scaleRecip));
  52
  53         double padding = 5.0 * scaleRecip;
  54         float d = (float) padding;
  55
  56         GeneralPath p = new GeneralPath();
  57         p.moveTo(-d, 0);
  58         p.lineTo(d, 0);
  59         p.moveTo(0, -d);
  60         p.lineTo(0, d);
  61
  62         g.draw(p);
  63
  64         g.setTransform(ot);
  65     }
  66
  67         @Override
  68         public Rectangle2D getBoundsInLocal() {
  69                 return new Rectangle2D.Double(pivot.getX()-5, pivot.getY()-5, 10, 10);
  70         }
  71
  72 }