bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/ResizeableImagePaint.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.g2d.element.handler.impl;
  13
  14 import java.awt.geom.AffineTransform;
  15 import java.awt.geom.Rectangle2D;
  16
  17 import org.simantics.g2d.element.ElementHints;
  18 import org.simantics.g2d.element.IElement;
  19 import org.simantics.g2d.element.SceneGraphNodeKey;
  20 import org.simantics.g2d.element.handler.Clickable;
  21 import org.simantics.g2d.element.handler.Clickable.PressStatus;
  22 import org.simantics.g2d.element.handler.SceneGraph;
  23 import org.simantics.g2d.element.handler.Togglable;
  24 import org.simantics.g2d.image.Image;
  25 import org.simantics.scenegraph.Node;
  26 import org.simantics.scenegraph.g2d.G2DNode;
  27 import org.simantics.scenegraph.g2d.G2DParentNode;
  28 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  29 import org.simantics.utils.datastructures.hints.IHintListener;
  30 import org.simantics.utils.datastructures.hints.IHintObservable;
  31
  32 /**
  33  *
  34  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  35  *
  36  */
  37 public abstract class ResizeableImagePaint implements SceneGraph {
  38
  39         private static final long serialVersionUID = 5955540004168283683L;
  40         public static final Key  KEY_SG_NODE             = new SceneGraphNodeKey(Node.class, "RESIZABLE_IMAGE_SG_NODE");
  41
  42
  43         public ResizeableImagePaint() {
  44
  45         }
  46
  47     @Override
  48     public void init(final IElement e, final G2DParentNode parent) {
  49         System.out.println("ResizeableImagePaint.init");
  50         Togglable togglable = e.getElementClass().getAtMostOneItemOfClass(Togglable.class);
  51         boolean toggled = false;
  52         if (togglable != null)
  53             toggled = togglable.isChecked(e);
  54
  55         Clickable.PressStatus status = null;
  56         Clickable clickable = e.getElementClass().getAtMostOneItemOfClass(Clickable.class);
  57                 status = PressStatus.NORMAL;//clickable.getPressStatus(e, ctx);
  58
  59                 Image image = getImage(status, toggled);
  60
  61
  62                 Node node = e.getHint(KEY_SG_NODE);
  63                 if (node != null)
  64                         node.remove();
  65
  66                 node = image.init(parent);
  67                 e.setHint(KEY_SG_NODE, node);
  68                 e.addHintListener(new IHintListener() {
  69
  70                         @Override
  71                         public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {
  72                                 // TODO Auto-generated method stub
  73
  74                         }
  75
  76                         @Override
  77                         public void hintChanged(IHintObservable sender, Key key, Object oldValue,
  78                                         Object newValue) {
  79                                 if (key == ElementHints.KEY_TRANSFORM) {
  80                                         G2DNode node = e.getHint(KEY_SG_NODE);
  81                                         Rectangle2D size = e.getHint(ElementHints.KEY_BOUNDS);
  82                                         AffineTransform at = (AffineTransform)newValue;
  83                                         AffineTransform at2 = node.getTransform();
  84                                         node.setTransform(new AffineTransform(at2.getScaleX(),at2.getShearX(),at2.getShearY(),at2.getScaleY(),at.getTranslateX()+size.getWidth()*0.5,at.getTranslateY()+size.getHeight()*0.5));
  85                                 }
  86                                 if (key == ElementHints.KEY_BOUNDS) {
  87                                         G2DNode node = e.getHint(KEY_SG_NODE);
  88                                         Rectangle2D size = (Rectangle2D)newValue;
  89                                         Rectangle2D bounds = node.getBoundsInLocal();
  90                                         AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);
  91
  92                                         node.setTransform(new AffineTransform(size.getWidth()/bounds.getWidth(),0,0,size.getHeight()/bounds.getHeight(),at.getTranslateX()+size.getWidth()*0.5,at.getTranslateY()+size.getHeight()*0.5));
  93                                 }
  94
  95
  96                         }
  97                 });
  98
  99     }
 100
 101     public void cleanup(final IElement e) {
 102         Node node = e.getHint(KEY_SG_NODE);
 103                 if (node != null)
 104                         node.remove();
 105
 106     }
 107
 108     public abstract Image getImage(Clickable.PressStatus status, boolean toggled);
 109
 110 }