org.simantics.district.network.ui/src/org/simantics/district/network/ui/adapters/DistrictNetworkVertexElement.java

   1 package org.simantics.district.network.ui.adapters;
   2
   3 import java.awt.Color;
   4 import java.awt.Shape;
   5 import java.awt.geom.AffineTransform;
   6 import java.awt.geom.Rectangle2D;
   7
   8 import org.simantics.diagram.elements.DiagramNodeUtil;
   9 import org.simantics.district.network.ui.nodes.DistrictNetworkVertexNode;
  10 import org.simantics.g2d.canvas.Hints;
  11 import org.simantics.g2d.canvas.ICanvasContext;
  12 import org.simantics.g2d.diagram.handler.PickRequest.PickPolicy;
  13 import org.simantics.g2d.element.ElementClass;
  14 import org.simantics.g2d.element.ElementUtils;
  15 import org.simantics.g2d.element.IElement;
  16 import org.simantics.g2d.element.SceneGraphNodeKey;
  17 import org.simantics.g2d.element.handler.InternalSize;
  18 import org.simantics.g2d.element.handler.Pick;
  19 import org.simantics.g2d.element.handler.SceneGraph;
  20 import org.simantics.g2d.element.handler.impl.DefaultTransform;
  21 import org.simantics.g2d.element.handler.impl.SimpleElementLayers;
  22 import org.simantics.scenegraph.INode;
  23 import org.simantics.scenegraph.g2d.G2DParentNode;
  24 import org.simantics.scenegraph.g2d.nodes.SVGNode;
  25 import org.simantics.scenegraph.utils.GeometryUtils;
  26 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  27 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  28
  29 public class DistrictNetworkVertexElement {
  30
  31     public static final Key KEY_DN_VERTEX = new KeyOf(DistrictNetworkVertex.class, "DN_VERTEX");
  32     public static final Key KEY_DN_VERTEX_NODE = new SceneGraphNodeKey(DistrictNetworkVertexNode.class, "DN_VERTEX_NODE");
  33     public static final Key KEY_DN_VERTEX_SYMBOL_NODE = new SceneGraphNodeKey(SVGNode.class, "DN_VERTEX_SYMBOL_NODE");
  34
  35     public static final ElementClass CLASS =
  36             ElementClass.compile(
  37                     DefaultTransform.INSTANCE,
  38                     DNVertexInternalSize.INSTANCE,
  39                     DNVertexSceneGraph.INSTANCE,
  40                     SimpleElementLayers.INSTANCE,
  41                     DistrictNetworkAdditionalColor.INSTANCE
  42             ).setId(DistrictNetworkVertexElement.class.getSimpleName());
  43
  44     static final class DNVertexSceneGraph implements SceneGraph {
  45
  46         public static final DNVertexSceneGraph INSTANCE = new DNVertexSceneGraph();
  47
  48         private static final long serialVersionUID = 8894367073815556871L;
  49
  50         @Override
  51         public void init(IElement vertexElement, G2DParentNode parent) {
  52             DistrictNetworkVertex vertex = vertexElement.getHint(KEY_DN_VERTEX);
  53             if (vertex == null) {
  54                 cleanup(vertexElement);
  55             } else {
  56                 DistrictNetworkVertexNode node = vertexElement.getHint(KEY_DN_VERTEX_NODE);
  57                 if (node == null) {
  58                     node = parent.addNode(ElementUtils.generateNodeId(vertexElement), DistrictNetworkVertexNode.class);
  59                     vertexElement.setHint(KEY_DN_VERTEX_NODE, node);
  60
  61                     SVGNode symbol = node.addNode(ElementUtils.generateNodeId(vertexElement), SVGNode.class);
  62                     vertexElement.setHint(KEY_DN_VERTEX_SYMBOL_NODE, symbol);
  63                 }
  64
  65                 node.setVertex(vertex);
  66
  67                 node.setColor(ElementUtils.getAdditionalColor(vertexElement, Color.BLUE));
  68
  69                 AffineTransform at = ElementUtils.getTransform(vertexElement);
  70                 if(at != null)
  71                     node.setTransform(at);
  72             }
  73         }
  74
  75         @Override
  76         public void cleanup(IElement edge) {
  77             ElementUtils.removePossibleNode(edge, KEY_DN_VERTEX_SYMBOL_NODE);
  78             INode node = ElementUtils.removePossibleNode(edge, KEY_DN_VERTEX_NODE);
  79             if (node != null)
  80                 node.getParent().remove();
  81
  82             edge.removeHint(KEY_DN_VERTEX_NODE);
  83             edge.removeHint(KEY_DN_VERTEX_SYMBOL_NODE);
  84         }
  85     }
  86
  87     static final class DNVertexInternalSize implements InternalSize, Pick {
  88
  89         public static final DNVertexInternalSize INSTANCE = new DNVertexInternalSize();
  90
  91         private static final long serialVersionUID = 2625702114278956461L;
  92
  93         @Override
  94         public Rectangle2D getBounds(IElement e, Rectangle2D size) {
  95             DistrictNetworkVertexNode node = e.getHint(KEY_DN_VERTEX_NODE);
  96             Rectangle2D boundsInLocal = node.getBoundsInLocal();
  97             ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(node);
  98             AffineTransform canvasTransform = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
  99             // for some reason PickContextImpl expands the rectangle by 0.001 (too much) - let's counter it
 100             double counterExpansion = 0.001;
 101             double x = boundsInLocal.getX() + counterExpansion;
 102             double y = boundsInLocal.getY() + counterExpansion;
 103             double scaledWidth = boundsInLocal.getWidth() / canvasTransform.getScaleX() / 10000.0;
 104             double scaledHeight = boundsInLocal.getHeight() / canvasTransform.getScaleY() / 10000.0;
 105             double width = scaledWidth - 2*counterExpansion;
 106             double height = scaledHeight - 2*counterExpansion;
 107             size.setFrame(x, y, width, height);
 108
 109             return size;
 110         }
 111
 112         @Override
 113         public boolean pickTest(IElement e, Shape s, PickPolicy policy) {
 114             DistrictNetworkVertexNode node = e.getHint(KEY_DN_VERTEX_NODE);
 115             Rectangle2D boundsInLocal = node.getBounds();
 116             ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(node);
 117             AffineTransform canvasTransform = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
 118             Rectangle2D scaledBounds = new Rectangle2D.Double(boundsInLocal.getX(), boundsInLocal.getY(), boundsInLocal.getWidth() / canvasTransform.getScaleX() * 2, boundsInLocal.getHeight() / canvasTransform.getScaleY() * 2);
 119             Rectangle2D bounds = getBounds(s);
 120             switch (policy) {
 121             case PICK_CONTAINED_OBJECTS:
 122                 return org.simantics.g2d.utils.GeometryUtils.contains(bounds, boundsInLocal);
 123             case PICK_INTERSECTING_OBJECTS:
 124                 return org.simantics.g2d.utils.GeometryUtils.intersects(boundsInLocal, bounds);
 125             }
 126             return false;
 127         }
 128
 129         private Rectangle2D getBounds(Shape shape) {
 130             if (shape instanceof Rectangle2D)
 131                 return (Rectangle2D) shape;
 132             return shape.getBounds2D();
 133         }
 134     }
 135 }