impl/ResizeableImagePaint.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.g2d.element.handler.impl;\r
  13 \r
  14 import java.awt.geom.AffineTransform;\r
  15 import java.awt.geom.Rectangle2D;\r
  16 \r
  17 import org.simantics.g2d.element.ElementHints;\r
  18 import org.simantics.g2d.element.IElement;\r
  19 import org.simantics.g2d.element.SceneGraphNodeKey;\r
  20 import org.simantics.g2d.element.handler.Clickable;\r
  21 import org.simantics.g2d.element.handler.Clickable.PressStatus;\r
  22 import org.simantics.g2d.element.handler.SceneGraph;\r
  23 import org.simantics.g2d.element.handler.Togglable;\r
  24 import org.simantics.g2d.image.Image;\r
  25 import org.simantics.scenegraph.Node;\r
  26 import org.simantics.scenegraph.g2d.G2DNode;\r
  27 import org.simantics.scenegraph.g2d.G2DParentNode;\r
  28 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  29 import org.simantics.utils.datastructures.hints.IHintListener;\r
  30 import org.simantics.utils.datastructures.hints.IHintObservable;\r
  31 \r
  32 /**\r
  33  * \r
  34  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
  35  *\r
  36  */\r
  37 public abstract class ResizeableImagePaint implements SceneGraph {\r
  38 \r
  39         private static final long serialVersionUID = 5955540004168283683L;\r
  40         public static final Key  KEY_SG_NODE             = new SceneGraphNodeKey(Node.class, "RESIZABLE_IMAGE_SG_NODE");\r
  41         \r
  42 \r
  43         public ResizeableImagePaint() {\r
  44 \r
  45         }\r
  46         \r
  47     @Override\r
  48     public void init(final IElement e, final G2DParentNode parent) {\r
  49         System.out.println("ResizeableImagePaint.init");\r
  50         Togglable togglable = e.getElementClass().getAtMostOneItemOfClass(Togglable.class);\r
  51         boolean toggled = false;\r
  52         if (togglable != null)\r
  53             toggled = togglable.isChecked(e);\r
  54 \r
  55         Clickable.PressStatus status = null;\r
  56         Clickable clickable = e.getElementClass().getAtMostOneItemOfClass(Clickable.class);\r
  57                 status = PressStatus.NORMAL;//clickable.getPressStatus(e, ctx);\r
  58 \r
  59                 Image image = getImage(status, toggled);\r
  60                 \r
  61                 \r
  62                 Node node = e.getHint(KEY_SG_NODE);\r
  63                 if (node != null)\r
  64                         node.remove();\r
  65                 \r
  66                 node = image.init(parent);\r
  67                 e.setHint(KEY_SG_NODE, node);\r
  68                 e.addHintListener(new IHintListener() {\r
  69                         \r
  70                         @Override\r
  71                         public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {\r
  72                                 // TODO Auto-generated method stub\r
  73                                 \r
  74                         }\r
  75                         \r
  76                         @Override\r
  77                         public void hintChanged(IHintObservable sender, Key key, Object oldValue,\r
  78                                         Object newValue) {\r
  79                                 if (key == ElementHints.KEY_TRANSFORM) {\r
  80                                         G2DNode node = e.getHint(KEY_SG_NODE);\r
  81                                         Rectangle2D size = e.getHint(ElementHints.KEY_BOUNDS);\r
  82                                         AffineTransform at = (AffineTransform)newValue;\r
  83                                         AffineTransform at2 = node.getTransform();\r
  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));\r
  85                                 }\r
  86                                 if (key == ElementHints.KEY_BOUNDS) {\r
  87                                         G2DNode node = e.getHint(KEY_SG_NODE);\r
  88                                         Rectangle2D size = (Rectangle2D)newValue;\r
  89                                         Rectangle2D bounds = node.getBoundsInLocal();\r
  90                                         AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
  91                                         \r
  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));\r
  93                                 }\r
  94                                         \r
  95                                 \r
  96                         }\r
  97                 });\r
  98                 \r
  99     }\r
 100 \r
 101     public void cleanup(final IElement e) {\r
 102         Node node = e.getHint(KEY_SG_NODE);\r
 103                 if (node != null)\r
 104                         node.remove();\r
 105         \r
 106     }\r
 107 \r
 108     public abstract Image getImage(Clickable.PressStatus status, boolean toggled);\r
 109 \r
 110 }\r