bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/ImportSVG.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.actions;\r
  13 \r
  14 import java.awt.geom.Point2D;\r
  15 import java.io.File;\r
  16 import java.io.FileNotFoundException;\r
  17 import java.io.IOException;\r
  18 \r
  19 import org.eclipse.core.commands.AbstractHandler;\r
  20 import org.eclipse.core.commands.ExecutionEvent;\r
  21 import org.eclipse.core.commands.ExecutionException;\r
  22 import org.eclipse.swt.widgets.FileDialog;\r
  23 import org.eclipse.swt.widgets.Shell;\r
  24 import org.eclipse.ui.IEditorPart;\r
  25 import org.eclipse.ui.IWorkbenchPart;\r
  26 import org.eclipse.ui.PlatformUI;\r
  27 import org.eclipse.ui.handlers.HandlerUtil;\r
  28 import org.eclipse.ui.part.MultiPageEditorPart;\r
  29 import org.simantics.db.ReadGraph;\r
  30 import org.simantics.db.Resource;\r
  31 import org.simantics.db.WriteGraph;\r
  32 import org.simantics.db.common.ResourceArray;\r
  33 import org.simantics.db.common.request.IndexRoot;\r
  34 import org.simantics.db.common.request.WriteRequest;\r
  35 import org.simantics.db.exception.DatabaseException;\r
  36 import org.simantics.db.request.Read;\r
  37 import org.simantics.g2d.canvas.ICanvasContext;\r
  38 import org.simantics.g2d.participant.MouseUtil;\r
  39 import org.simantics.g2d.participant.MouseUtil.MouseInfo;\r
  40 import org.simantics.modeling.ModelingResources;\r
  41 import org.simantics.scl.commands.Commands;\r
  42 import org.simantics.structural.stubs.StructuralResource2;\r
  43 import org.simantics.ui.SimanticsUI;\r
  44 import org.simantics.ui.workbench.IResourceEditorInput;\r
  45 import org.simantics.ui.workbench.ResourceEditorInput;\r
  46 import org.simantics.utils.FileUtils;\r
  47 import org.simantics.utils.ui.ErrorLogger;\r
  48 \r
  49 public class ImportSVG extends AbstractHandler {\r
  50 \r
  51     @Override\r
  52     public Object execute(ExecutionEvent event) throws ExecutionException {\r
  53         IWorkbenchPart ap = HandlerUtil.getActivePart(event);\r
  54         IEditorPart viewer = null;\r
  55         if (ap instanceof MultiPageEditorPart) {\r
  56             MultiPageEditorPart rfe = (MultiPageEditorPart) ap;\r
  57             IResourceEditorInput in = (ResourceEditorInput) rfe.getEditorInput();\r
  58             final ResourceArray ra = in.getResourceArray();\r
  59             ResourceArray symbolEditorInput;\r
  60             try {\r
  61                 symbolEditorInput = SimanticsUI.getSession().syncRequest(new Read<ResourceArray>() {\r
  62                     @Override\r
  63                     public ResourceArray perform(ReadGraph graph) throws DatabaseException {\r
  64                         StructuralResource2 sr = StructuralResource2.getInstance(graph);\r
  65                         ModelingResources mr = ModelingResources.getInstance(graph);\r
  66                         Resource symbol = graph.getPossibleObject(ra.resources[0], mr.ComponentTypeToSymbol);\r
  67                         Resource definedBy = symbol != null ? graph.getPossibleObject(symbol, sr.IsDefinedBy) : null;\r
  68                         ResourceArray result = definedBy != null ? new ResourceArray(definedBy) : ResourceArray.EMPTY;\r
  69                         return result;\r
  70                     }\r
  71                 });\r
  72 \r
  73                 IEditorPart[] eps = rfe.findEditors(new ResourceEditorInput("org.simantics.modeling.ui.symbolEditor", symbolEditorInput));\r
  74                 if (eps.length == 0) {\r
  75                     System.out.println("symbol editor part not found from multi page editor part: " + ap);\r
  76                     return null;\r
  77                 }\r
  78                 viewer = eps[0];\r
  79             } catch (DatabaseException e) {\r
  80                 e.printStackTrace();\r
  81                 return null;\r
  82             }\r
  83         } else if (ap instanceof IEditorPart) {\r
  84             viewer = (IEditorPart) ap;\r
  85         }\r
  86         ICanvasContext ctx = (ICanvasContext) viewer.getAdapter(ICanvasContext.class);\r
  87         if (ctx == null) {\r
  88             System.out.println("No canvas context");\r
  89             return null;\r
  90         }\r
  91         MouseInfo minfo = ctx.getSingleItem(MouseUtil.class).getMousePressedInfo(0);\r
  92         if(minfo == null) {\r
  93             System.out.println("No mouse info");\r
  94             return null;\r
  95         }\r
  96         final Point2D mpos = minfo.canvasPosition;\r
  97         IResourceEditorInput input = (IResourceEditorInput)viewer.getEditorInput();\r
  98         Resource composite = input.getResource();\r
  99 \r
 100         return addSVG(mpos.getX(), mpos.getY(), composite);\r
 101     }\r
 102 \r
 103     public static Object addSVG(final double mposX, final double mposY, final Resource composite) {\r
 104 \r
 105         Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();\r
 106 \r
 107         FileDialog dialog = new FileDialog(shell);\r
 108         dialog.setText("Choose an image to be imported");\r
 109         dialog.setFilterExtensions(new String[] {"*.svg", "*.png"});\r
 110 \r
 111         final String filename = dialog.open();\r
 112         if(filename == null)\r
 113             return null;\r
 114 \r
 115         File file = new File(filename);\r
 116         try {\r
 117             final byte[] data = FileUtils.readFile(file);\r
 118 \r
 119             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 120 \r
 121                 @Override\r
 122                 public void perform(WriteGraph g) throws DatabaseException {\r
 123                     Commands.get(g, "Simantics/Diagram/createSVGElement")\r
 124                             .execute(g, g.syncRequest(new IndexRoot(composite)),\r
 125                                      composite, suffix(filename), data, mposX, mposY);\r
 126                 }\r
 127 \r
 128             });\r
 129         } catch (FileNotFoundException e) {\r
 130             ErrorLogger.defaultLogError(e);\r
 131         } catch (IOException e) {\r
 132             ErrorLogger.defaultLogError(e);\r
 133         }\r
 134 \r
 135         return null;\r
 136 \r
 137     }\r
 138 \r
 139     private static String suffix(String fileName) {\r
 140         int len = fileName.length();\r
 141         if(len < 3) return null;\r
 142         else return fileName.substring(len-3,len).toLowerCase();\r
 143     }\r
 144 \r
 145 }\r