bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/TextElementClassFactory.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.diagram.adapter;
  13
  14 import java.awt.geom.AffineTransform;
  15 import java.awt.geom.Rectangle2D;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.common.utils.NameUtils;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.diagram.G2DUtils;
  22 import org.simantics.diagram.elements.ElementPropertySetter;
  23 import org.simantics.diagram.elements.MonitorClass;
  24 import org.simantics.diagram.elements.ResizeRectangularSceneGraph;
  25 import org.simantics.diagram.elements.TextElementHandler;
  26 import org.simantics.diagram.stubs.DiagramResource;
  27 import org.simantics.diagram.stubs.G2DResource;
  28 import org.simantics.diagram.synchronization.CompositeHintSynchronizer;
  29 import org.simantics.diagram.synchronization.IHintSynchronizer;
  30 import org.simantics.diagram.synchronization.SynchronizationHints;
  31 import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
  32 import org.simantics.diagram.synchronization.graph.TextSynchronizer;
  33 import org.simantics.diagram.synchronization.graph.TransformSynchronizer;
  34 import org.simantics.g2d.canvas.ICanvasContext;
  35 import org.simantics.g2d.diagram.IDiagram;
  36 import org.simantics.g2d.element.ElementClass;
  37 import org.simantics.g2d.element.ElementHints;
  38 import org.simantics.g2d.element.ElementUtils;
  39 import org.simantics.g2d.element.IElement;
  40 import org.simantics.g2d.element.handler.Text;
  41 import org.simantics.g2d.element.handler.impl.DefaultTransform;
  42 import org.simantics.g2d.element.handler.impl.SimpleElementLayers;
  43 import org.simantics.g2d.element.handler.impl.StaticObjectAdapter;
  44 import org.simantics.g2d.element.handler.impl.StaticSymbolImpl;
  45 import org.simantics.g2d.element.handler.impl.TextColorImpl;
  46 import org.simantics.g2d.element.handler.impl.TextFontImpl;
  47 import org.simantics.g2d.image.DefaultImages;
  48 import org.simantics.g2d.image.Image;
  49 import org.simantics.g2d.svg.SVGImage;
  50 import org.simantics.g2d.utils.Alignment;
  51
  52
  53 /**
  54  * Element(Class)Factory for TextElements
  55  *
  56  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  57  *
  58  */
  59 public class TextElementClassFactory extends SyncElementFactory {
  60
  61     public static final ElementFactory INSTANCE = new TextElementClassFactory();
  62
  63     public static final IHintSynchronizer TEXT_SYNCHRONIZER = new CompositeHintSynchronizer(TextSynchronizer.INSTANCE, TransformSynchronizer.INSTANCE);
  64
  65     public static final ElementPropertySetter RESIZE_PROPERTY_SETTER =
  66             new ElementPropertySetter(ResizeRectangularSceneGraph.KEY_SG_NODE);
  67
  68     @Override
  69     public ElementClass create(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource elementType) throws DatabaseException {
  70         String id = "TextElement: " + NameUtils.getSafeName(graph, elementType);
  71         G2DResource g2d = G2DResource.getInstance(graph);
  72         String svgDoc = graph.getPossibleRelatedValue(elementType, g2d.HasSVGDocument);
  73         Image image = null;
  74         if (svgDoc != null)
  75             image = new SVGImage(id+".svg", svgDoc);
  76         else
  77             image = DefaultImages.ERROR_DECORATOR.get();
  78         return ElementClass.compile(
  79                 Text.INSTANCE,
  80                 TextColorImpl.BLACK,
  81                 TextFontImpl.DEFAULT,
  82                 new StaticObjectAdapter(elementType),
  83                 DefaultTransform.INSTANCE,
  84                 SimpleElementLayers.INSTANCE,
  85                 TextElementHandler.INSTANCE,
  86                 ResizeRectangularSceneGraph.INSTANCE,
  87                 RESIZE_PROPERTY_SETTER,
  88                 new StaticSymbolImpl(image)
  89         )
  90         .setId(id)
  91         ;
  92     }
  93
  94     @Override
  95     public void load(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource element, IElement e) throws DatabaseException {
  96         G2DResource G2D = G2DResource.getInstance(graph);
  97         DiagramResource DIA = DiagramResource.getInstance(graph);
  98
  99         String text = (String) graph.getPossibleRelatedValue(element, DIA.HasText);
 100         if (text == null)
 101                 text = ElementUtils.getText(e);
 102         if (text == null)
 103             text = "[empty]";
 104         ElementUtils.setText(e, text);
 105
 106         if (graph.isInstanceOf(element, DIA.FontProvider)) {
 107             Resource fontResource = graph.getPossibleObject(element, G2D.HasFont);
 108             if (fontResource != null)
 109                 ElementUtils.setTextFont(e, G2DUtils.getFont(graph, fontResource));
 110         }
 111         if (graph.isInstanceOf(element, DIA.ColorProvider)) {
 112             Resource colorResource = graph.getPossibleObject(element, G2D.HasColor);
 113             if (colorResource != null)
 114                 ElementUtils.setTextColor(e, G2DUtils.getColor(graph, colorResource));
 115         }
 116
 117         // Load alignments
 118         Resource hAlign = graph.getPossibleObject(element, G2D.HasHorizontalAlignment);
 119         Resource vAlign = graph.getPossibleObject(element, G2D.HasVerticalAlignment);
 120         if (hAlign != null)
 121             e.setHint(ElementHints.KEY_HORIZONTAL_ALIGN, DiagramGraphUtil.toAlignment(hAlign, G2D, Alignment.LEADING));
 122         if (vAlign != null)
 123             e.setHint(ElementHints.KEY_VERTICAL_ALIGN, DiagramGraphUtil.toVerticalAlignment(vAlign, G2D, Alignment.BASELINE));
 124
 125         // Load border
 126         final Float borderWidth = graph.getPossibleRelatedValue(element, G2D.HasStrokeWidth);
 127         if (borderWidth != null)
 128             e.setHint(MonitorClass.KEY_BORDER_WIDTH, borderWidth.doubleValue());
 129
 130         // Load transform
 131         AffineTransform at = DiagramGraphUtil.getAffineTransform(graph, element);
 132         ElementUtils.setTransform(e, at);
 133
 134         // This synchronizes only text and transformation (not font and color)
 135         e.setHint(SynchronizationHints.HINT_SYNCHRONIZER, TEXT_SYNCHRONIZER);
 136
 137         double bounds[] = DiagramGraphUtil.getPossibleRelatedDoubleArray(graph, element, G2D.HasBounds);
 138         if (bounds != null) {
 139             e.setHint(ElementHints.KEY_BOUNDS, new Rectangle2D.Double(bounds[0], bounds[1], bounds[2], bounds[3]));
 140         }
 141     }
 142
 143 }