bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/SVGElementClassFactory.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.diagram.adapter;\r
  13 \r
  14 import java.awt.Point;\r
  15 import java.awt.geom.Rectangle2D;\r
  16 \r
  17 import org.simantics.Simantics;\r
  18 import org.simantics.databoard.Bindings;\r
  19 import org.simantics.db.AsyncReadGraph;\r
  20 import org.simantics.db.ReadGraph;\r
  21 import org.simantics.db.Resource;\r
  22 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
  23 import org.simantics.db.common.procedure.guarded.GuardedAsyncProcedureWrapper;\r
  24 import org.simantics.db.common.request.BinaryAsyncRead;\r
  25 import org.simantics.db.common.request.ReadRequest;\r
  26 import org.simantics.db.common.request.UnaryAsyncRead;\r
  27 import org.simantics.db.common.utils.NameUtils;\r
  28 import org.simantics.db.exception.DatabaseException;\r
  29 import org.simantics.db.procedure.AsyncProcedure;\r
  30 import org.simantics.diagram.stubs.G2DResource;\r
  31 import org.simantics.diagram.synchronization.SynchronizationHints;\r
  32 import org.simantics.diagram.synchronization.graph.TransformSynchronizer;\r
  33 import org.simantics.g2d.canvas.ICanvasContext;\r
  34 import org.simantics.g2d.diagram.DiagramHints;\r
  35 import org.simantics.g2d.diagram.IDiagram;\r
  36 import org.simantics.g2d.element.ElementClass;\r
  37 import org.simantics.g2d.element.ElementHints;\r
  38 import org.simantics.g2d.element.IElement;\r
  39 import org.simantics.g2d.element.handler.impl.DefaultTransform;\r
  40 import org.simantics.g2d.element.handler.impl.SimpleElementLayers;\r
  41 import org.simantics.g2d.element.handler.impl.StaticObjectAdapter;\r
  42 import org.simantics.g2d.element.handler.impl.StaticSymbolImageInitializer;\r
  43 import org.simantics.g2d.element.handler.impl.StaticSymbolImpl;\r
  44 import org.simantics.g2d.element.handler.impl.TextImpl;\r
  45 import org.simantics.g2d.elementclass.ImageClass.ImageElementHandler;\r
  46 import org.simantics.g2d.image.DefaultImages;\r
  47 import org.simantics.g2d.image.Image;\r
  48 import org.simantics.g2d.image.ProviderUtils;\r
  49 import org.simantics.g2d.svg.SVGImage;\r
  50 import org.simantics.scenegraph.g2d.nodes.SVGNode;\r
  51 import org.simantics.utils.Development;\r
  52 import org.simantics.utils.datastructures.cache.IFactory;\r
  53 import org.simantics.utils.datastructures.cache.ProvisionException;\r
  54 import org.simantics.utils.ui.ErrorLogger;\r
  55 \r
  56 /**\r
  57  * An {@link ElementFactory} for DIA.SVGElement instances.\r
  58  * \r
  59  * <p>\r
  60  * Loads element layers, transform and SVG document.\r
  61  * \r
  62  * @author Tuukka Lehtonen\r
  63  */\r
  64 public class SVGElementClassFactory extends ElementFactoryAdapter {\r
  65 \r
  66     public static final ElementFactory INSTANCE = new SVGElementClassFactory();\r
  67 \r
  68     private static final StaticSymbolImpl STATIC_SYMBOL = new StaticSymbolImpl(DefaultImages.SVG.get());\r
  69 \r
  70     static class ClassRequest extends UnaryAsyncRead<Resource, ElementClass> {\r
  71 \r
  72         public ClassRequest(Resource elementType) {\r
  73             super(elementType);\r
  74         }\r
  75 \r
  76         @Override\r
  77         public void perform(AsyncReadGraph graph, AsyncProcedure<ElementClass> procedure) {\r
  78             createClass(graph, parameter, procedure);\r
  79         }\r
  80 \r
  81     }\r
  82 \r
  83     @Override\r
  84     public void create(AsyncReadGraph graph, ICanvasContext canvas, IDiagram diagram,\r
  85             final Resource elementType, final AsyncProcedure<ElementClass> procedure) {\r
  86 \r
  87         graph.asyncRequest(new ClassRequest(elementType), new TransientCacheAsyncListener<ElementClass>() {\r
  88 \r
  89             @Override\r
  90             public void exception(AsyncReadGraph graph, Throwable t) {\r
  91                 procedure.exception(graph, t);\r
  92             }\r
  93 \r
  94             @Override\r
  95             public void execute(AsyncReadGraph graph, ElementClass result) {\r
  96                 procedure.execute(graph, result);\r
  97             }\r
  98 \r
  99         });\r
 100 \r
 101     }\r
 102 \r
 103     static void createClass(AsyncReadGraph graph, final Resource elementType, final AsyncProcedure<ElementClass> procedure) {\r
 104         String id = "SVGElement: " + elementType.getResourceId();\r
 105         procedure.execute(graph, ElementClass.compile(\r
 106                 TextImpl.INSTANCE,\r
 107                 new StaticObjectAdapter(elementType),\r
 108                 DefaultTransform.INSTANCE,\r
 109                 StaticSymbolImageInitializer.INSTANCE,\r
 110                 STATIC_SYMBOL,\r
 111                 ImageElementHandler.INSTANCE,\r
 112                 SimpleElementLayers.INSTANCE)\r
 113                 .setId(id));\r
 114     }\r
 115 \r
 116     @Override\r
 117     public void load(AsyncReadGraph graph, final ICanvasContext canvas, final IDiagram diagram, final Resource element, final IElement e, final AsyncProcedure<IElement> procedure) {\r
 118         e.setHint(SynchronizationHints.HINT_SYNCHRONIZER, TransformSynchronizer.INSTANCE);\r
 119 \r
 120         final GuardedAsyncProcedureWrapper<IElement> guard = new GuardedAsyncProcedureWrapper<IElement>(procedure, 3);\r
 121 \r
 122         loadSVG(graph, diagram, element, e, guard);\r
 123         ElementFactoryUtil.loadLayersForElement(graph, diagram, e, element, guard);\r
 124         ElementFactoryUtil.readTransform(graph, element, e, guard);\r
 125     }\r
 126 \r
 127     private void loadSVG(AsyncReadGraph graph, final IDiagram diagram, final Resource element, final IElement e, final AsyncProcedure<IElement> guard) {\r
 128         G2DResource G2D = graph.getService(G2DResource.class);\r
 129 \r
 130         graph.forPossibleRelatedValue(element, G2D.HasSVGDocument, Bindings.STRING, new AsyncProcedure<String>() {\r
 131             @Override\r
 132             public void exception(AsyncReadGraph graph, Throwable throwable) {\r
 133                 guard.exception(graph, throwable);\r
 134             }\r
 135 \r
 136             @Override\r
 137             public void execute(AsyncReadGraph graph, final String svgDocument) {\r
 138                 if (svgDocument != null) {\r
 139 \r
 140                     if(Development.DEVELOPMENT) {\r
 141                         Rectangle2D bounds = SVGNode.getRealBounds(svgDocument);\r
 142                         if(bounds != null && bounds.isEmpty()) {\r
 143                             Simantics.async(new ReadRequest() {\r
 144                                 @Override \r
 145                                 public void run(ReadGraph graph) throws DatabaseException {\r
 146                                     System.err.println("Graphics for element " + NameUtils.getSafeName(graph, element) + " are empty.");\r
 147                                 }\r
 148                             });\r
 149                         }\r
 150                     }\r
 151 \r
 152                     Point referenceSize = diagram.getHint(DiagramHints.KEY_ELEMENT_RASTER_TARGET_SIZE);\r
 153                     IFactory<Image> img = SVGImage.createFactoryFromString(String.valueOf(element.getResourceId()), svgDocument, referenceSize);\r
 154                     try {\r
 155                         img = ProviderUtils.rasterize(img);\r
 156                         e.setHint(ElementHints.KEY_IMAGE, img.get());\r
 157                         guard.execute(graph, e);\r
 158                     } catch (ProvisionException ex) {\r
 159                         ErrorLogger.defaultLogError(ex);\r
 160                         e.setHint(ElementHints.KEY_IMAGE, DefaultImages.SVG.get());\r
 161                         guard.execute(graph, e);\r
 162                     }\r
 163                 } else {\r
 164                     e.setHint(ElementHints.KEY_IMAGE, DefaultImages.UNKNOWN.get());\r
 165                     guard.execute(graph, e);\r
 166                 }\r
 167             }\r
 168         });\r
 169     }\r
 170 \r
 171 }