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