bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/handlers/AlignHorizontalHandler.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.modeling.ui.diagramEditor.handlers;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.List;\r
  16 \r
  17 import org.eclipse.core.commands.AbstractHandler;\r
  18 import org.eclipse.core.commands.ExecutionEvent;\r
  19 import org.eclipse.core.commands.ExecutionException;\r
  20 import org.eclipse.jface.viewers.ISelection;\r
  21 import org.eclipse.ui.handlers.HandlerUtil;\r
  22 import org.simantics.db.Resource;\r
  23 import org.simantics.db.WriteGraph;\r
  24 import org.simantics.db.common.request.WriteRequest;\r
  25 import org.simantics.db.exception.DatabaseException;\r
  26 import org.simantics.diagram.stubs.DiagramResource;\r
  27 import org.simantics.ui.SimanticsUI;\r
  28 import org.simantics.ui.utils.ResourceAdaptionUtils;\r
  29 \r
  30 /**\r
  31  * \r
  32  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
  33  *\r
  34  */\r
  35 public class AlignHorizontalHandler extends AbstractHandler {\r
  36 \r
  37         @Override\r
  38         public Object execute(ExecutionEvent event) throws ExecutionException {\r
  39                 \r
  40                 ISelection s = HandlerUtil.getCurrentSelectionChecked(event);\r
  41                 final Resource resources[] = ResourceAdaptionUtils.toResources(s);\r
  42                 \r
  43                 if (resources.length < 2)\r
  44                         return null;\r
  45                 \r
  46                 SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
  47                         \r
  48                         @Override\r
  49                         public void perform(WriteGraph graph) throws DatabaseException {\r
  50                                 DiagramResource dr = DiagramResource.getInstance(graph);\r
  51                                 \r
  52                                 List<Resource> elements = new ArrayList<Resource>();\r
  53                                 List<double[]> transforms = new ArrayList<double[]>();\r
  54                                 for (Resource r : resources) {\r
  55                                         //System.out.println(r + " " + GraphUtils.getReadableName(graph, r));\r
  56                                         if (graph.isInstanceOf(r, dr.Element) && !graph.isInstanceOf(r, dr.Connection)) {\r
  57                                                 \r
  58                                                 double transform[] = graph.getPossibleRelatedValue(r, dr.HasTransform);\r
  59                                                 if (transform != null) {\r
  60                                                         elements.add(r);\r
  61                                                         transforms.add(transform);\r
  62                                                 }\r
  63                                         }\r
  64                                 }\r
  65                                 double mx = 0;\r
  66                                 double my = 0;\r
  67                                 for (double[] t : transforms) {\r
  68                                         mx += t[4];\r
  69                                         my += t[5];\r
  70                                 }\r
  71                                 mx /= transforms.size();\r
  72                                 my /= transforms.size();\r
  73                                 \r
  74                                 // prevent moving symbols into the same position\r
  75                                 int count = 0;\r
  76                                 for (double t[] : transforms) {\r
  77                                         if (Math.abs(t[4] - mx) < 0.1) {\r
  78                                                 count++;\r
  79                                         }\r
  80                                 }\r
  81                                 if (count > 1)\r
  82                                         return;\r
  83                                 \r
  84                                 for (int i = 0; i < transforms.size(); i++) {\r
  85                                         Resource element = elements.get(i);\r
  86                                         double t[] = transforms.get(i);\r
  87                                         graph.claimLiteral(element, dr.HasTransform, new double[]{t[0],t[1],t[2],t[3],t[4],my});\r
  88                                 }\r
  89                         }\r
  90                 });\r
  91                 \r
  92                 return null;\r
  93         }\r
  94 \r
  95 }\r