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.utils.datastructures.hints.IHintContext.Key;
  26 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  27
  28 public class DistrictNetworkVertexElement {
  29
  30     public static final Key KEY_DN_VERTEX = new KeyOf(DistrictNetworkVertex.class, "DN_VERTEX");
  31     public static final Key KEY_DN_VERTEX_NODE = new SceneGraphNodeKey(DistrictNetworkVertexNode.class, "DN_VERTEX_NODE");
  32     public static final Key KEY_DN_VERTEX_SYMBOL_NODE = new SceneGraphNodeKey(SVGNode.class, "DN_VERTEX_SYMBOL_NODE");
  33
  34     public static final ElementClass CLASS =
  35             ElementClass.compile(
  36                     DefaultTransform.INSTANCE,
  37                     DNVertexInternalSize.INSTANCE,
  38                     DNVertexSceneGraph.INSTANCE,
  39                     SimpleElementLayers.INSTANCE,
  40                     DistrictNetworkAdditionalColor.INSTANCE
  41             ).setId(DistrictNetworkVertexElement.class.getSimpleName());
  42
  43     static final class DNVertexSceneGraph implements SceneGraph {
  44
  45         public static final DNVertexSceneGraph INSTANCE = new DNVertexSceneGraph();
  46
  47         private static final long serialVersionUID = 8894367073815556871L;
  48
  49         @Override
  50         public void init(IElement vertexElement, G2DParentNode parent) {
  51             DistrictNetworkVertex vertex = vertexElement.getHint(KEY_DN_VERTEX);
  52             if (vertex == null) {
  53                 cleanup(vertexElement);
  54             } else {
  55                 DistrictNetworkVertexNode node = vertexElement.getHint(KEY_DN_VERTEX_NODE);
  56                 if (node == null) {
  57                     node = parent.addNode(ElementUtils.generateNodeId(vertexElement), DistrictNetworkVertexNode.class);
  58                     vertexElement.setHint(KEY_DN_VERTEX_NODE, node);
  59
  60                     SVGNode symbol = node.addNode(ElementUtils.generateNodeId(vertexElement), SVGNode.class);
  61                     vertexElement.setHint(KEY_DN_VERTEX_SYMBOL_NODE, symbol);
  62                 }
  63
  64                 node.setVertex(vertex);
  65
  66                 node.setColor(ElementUtils.getAdditionalColor(vertexElement, Color.BLUE));
  67
  68                 AffineTransform at = ElementUtils.getTransform(vertexElement);
  69                 if(at != null)
  70                     node.setTransform(at);
  71             }
  72         }
  73
  74         @Override
  75         public void cleanup(IElement edge) {
  76             ElementUtils.removePossibleNode(edge, KEY_DN_VERTEX_SYMBOL_NODE);
  77             INode node = ElementUtils.removePossibleNode(edge, KEY_DN_VERTEX_NODE);
  78             if (node != null)
  79                 node.getParent().remove();
  80
  81             edge.removeHint(KEY_DN_VERTEX_NODE);
  82             edge.removeHint(KEY_DN_VERTEX_SYMBOL_NODE);
  83         }
  84     }
  85
  86     static final class DNVertexInternalSize implements InternalSize, Pick {
  87
  88         public static final DNVertexInternalSize INSTANCE = new DNVertexInternalSize();
  89
  90         private static final long serialVersionUID = 2625702114278956461L;
  91
  92         @Override
  93         public Rectangle2D getBounds(IElement e, Rectangle2D size) {
  94             DistrictNetworkVertexNode node = e.getHint(KEY_DN_VERTEX_NODE);
  95             Rectangle2D boundsInLocal = node.getBoundsInLocal();
  96             ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(node);
  97             AffineTransform canvasTransform = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
  98             // for some reason PickContextImpl expands the rectangle by 0.001 (too much) - let's counter it
  99             double x = boundsInLocal.getX();
 100             double y = boundsInLocal.getY();
 101             double scaledWidth = boundsInLocal.getWidth();
 102             double scaledHeight = boundsInLocal.getHeight();
 103             if (canvasTransform != null) {
 104                 scaledWidth = boundsInLocal.getWidth() / canvasTransform.getScaleX();
 105                 scaledHeight= boundsInLocal.getHeight() / canvasTransform.getScaleY();
 106             }
 107             double width = scaledWidth;
 108             double height = scaledHeight;
 109             size.setFrame(x, y, width, height);
 110
 111             return size;
 112         }
 113
 114         @Override
 115         public boolean pickTest(IElement e, Shape s, PickPolicy policy) {
 116             DistrictNetworkVertexNode node = e.getHint(KEY_DN_VERTEX_NODE);
 117             Rectangle2D boundsInLocal = node.getBounds();
 118             ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(node);
 119             AffineTransform canvasTransform = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
 120             Rectangle2D scaledBounds = new Rectangle2D.Double(boundsInLocal.getX(), boundsInLocal.getY(), boundsInLocal.getWidth() / canvasTransform.getScaleX() * 2, boundsInLocal.getHeight() / canvasTransform.getScaleY() * 2);
 121             Rectangle2D bounds = getBounds(s);
 122             switch (policy) {
 123             case PICK_CONTAINED_OBJECTS:
 124                 return org.simantics.g2d.utils.GeometryUtils.contains(bounds, boundsInLocal);
 125             case PICK_INTERSECTING_OBJECTS:
 126                 return org.simantics.g2d.utils.GeometryUtils.intersects(boundsInLocal, bounds);
 127             }
 128             return false;
 129         }
 130
 131         private Rectangle2D getBounds(Shape shape) {
 132             if (shape instanceof Rectangle2D)
 133                 return (Rectangle2D) shape;
 134             return shape.getBounds2D();
 135         }
 136     }
 137 }