--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.diagram.handler.impl;\r
+\r
+import java.awt.Shape;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.NoninvertibleTransformException;\r
+import java.awt.geom.Rectangle2D;\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.List;\r
+\r
+import org.simantics.g2d.diagram.DiagramHints;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.diagram.handler.PickContext;\r
+import org.simantics.g2d.diagram.handler.PickRequest;\r
+import org.simantics.g2d.diagram.handler.PickRequest.PickPolicy;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.ElementUtils;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.ElementLayers;\r
+import org.simantics.g2d.element.handler.InternalSize;\r
+import org.simantics.g2d.element.handler.Outline;\r
+import org.simantics.g2d.element.handler.Pick;\r
+import org.simantics.g2d.element.handler.Pick2;\r
+import org.simantics.g2d.element.handler.Transform;\r
+import org.simantics.g2d.layers.ILayers;\r
+import org.simantics.g2d.utils.GeometryUtils;\r
+\r
+/**\r
+ * @author Toni Kalajainen\r
+ */\r
+public class PickContextImpl implements PickContext {\r
+\r
+ public static final PickContextImpl INSTANCE = new PickContextImpl(); \r
+\r
+ @Override\r
+ public void pick(\r
+ IDiagram diagram, \r
+ PickRequest request, \r
+ Collection<IElement> finalResult) \r
+ {\r
+ assert(diagram!=null);\r
+ assert(request!=null);\r
+ assert(finalResult!=null);\r
+\r
+ ILayers layers = diagram.getHint(DiagramHints.KEY_LAYERS);\r
+\r
+ Collection<IElement> result = finalResult;\r
+ if (request.pickSorter != null) {\r
+ // Need a temporary List<IElement> for PickSorter\r
+ result = new ArrayList<IElement>();\r
+ }\r
+ Rectangle2D elementBounds = new Rectangle2D.Double();\r
+ nextElement:\r
+ for (IElement e : diagram.getSnapshot())\r
+ {\r
+ // Ignore hidden elements.\r
+ if (ElementUtils.isHidden(e))\r
+ continue;\r
+\r
+ ElementClass ec = e.getElementClass();\r
+ \r
+ if(layers != null && !layers.getIgnoreFocusSettings()) {\r
+ ElementLayers el = ec.getAtMostOneItemOfClass(ElementLayers.class);\r
+ if(el != null) {\r
+ if(!el.isFocusable(e, layers)) continue;\r
+ }\r
+ }\r
+ \r
+ if (request.pickFilter!=null && !request.pickFilter.accept(e)) continue;\r
+ \r
+ Transform t = e.getElementClass().getSingleItem(Transform.class);\r
+ AffineTransform canvasToElement = t.getTransform(e);\r
+ if (canvasToElement==null) continue;\r
+ double det = canvasToElement.getDeterminant();\r
+ if (det == 0) {\r
+ // Singular transform, just reset the rotation/scaling part to\r
+ // allow picking to proceed.\r
+ // TODO: this may modify the internal transform value of an element which is not intended\r
+ canvasToElement.setToTranslation(\r
+ canvasToElement.getTranslateX(),\r
+ canvasToElement.getTranslateY());\r
+ }\r
+\r
+ // Get bounds, ignore elements that have no bounds\r
+ InternalSize b = e.getElementClass().getAtMostOneItemOfClass(InternalSize.class);\r
+ if (b==null) continue;\r
+ elementBounds.setFrame(Double.NaN, Double.NaN, Double.NaN, Double.NaN);\r
+ b.getBounds(e, elementBounds);\r
+ if (Double.isNaN(elementBounds.getWidth()) || Double.isNaN(elementBounds.getHeight()))\r
+ continue;\r
+\r
+ Shape elementBoundsOnCanvas = GeometryUtils.transformShape(elementBounds, canvasToElement);\r
+ if (elementBoundsOnCanvas instanceof Rectangle2D)\r
+ elementBoundsOnCanvas = elementBoundsOnCanvas.getBounds2D();\r
+ elementBoundsOnCanvas = elementBoundsOnCanvas.getBounds2D();\r
+ org.simantics.scenegraph.utils.GeometryUtils.expandRectangle((Rectangle2D)elementBoundsOnCanvas, 1e-3, 1e-3, 1e-3, 1e-3);\r
+ \r
+ // Pick with pick handler(s)\r
+ List<Pick> pickHandlers = e.getElementClass().getItemsByClass(Pick.class);\r
+ if (!pickHandlers.isEmpty())\r
+ {\r
+ // Rough filtering with bounds\r
+ if (!GeometryUtils.intersects(request.pickArea, elementBoundsOnCanvas)) {\r
+// System.out.println("Element bounds discards " + e.getElementClass());\r
+ continue;\r
+ }\r
+ \r
+ // Convert pick shape to element coordinates\r
+// AffineTransform elementToCanvas;\r
+// try {\r
+// elementToCanvas = canvasToElement.createInverse();\r
+// } catch (NoninvertibleTransformException e1) {\r
+// throw new RuntimeException(e1);\r
+// }\r
+// Shape pickShapeInElementCoords = GeometryUtils.transformShape(request.pickArea, elementToCanvas);\r
+ for (Pick p : pickHandlers)\r
+ {\r
+ if (p instanceof Pick2) {\r
+ Pick2 p2 = (Pick2) p;\r
+ //if (p2.pick(e, pickShapeInElementCoords, request.pickPolicy, result) > 0)\r
+ if (p2.pick(e, request.pickArea, request.pickPolicy, result) > 0)\r
+ continue nextElement;\r
+ } else {\r
+ //if (p.pickTest(e, pickShapeInElementCoords, request.pickPolicy)) {\r
+ if (p.pickTest(e, request.pickArea, request.pickPolicy)) {\r
+ result.add(e);\r
+ continue nextElement;\r
+ }\r
+ }\r
+ }\r
+ continue nextElement;\r
+ }\r
+ \r
+ // Pick with shape handler(s) \r
+ List<Outline> shapeHandlers = e.getElementClass().getItemsByClass(Outline.class);\r
+ if (!shapeHandlers.isEmpty())\r
+ {\r
+ // Rough filtering with bounds\r
+ if (!GeometryUtils.intersects(request.pickArea, elementBoundsOnCanvas)) continue;\r
+ \r
+ // Convert pick shape to element coordinates\r
+ AffineTransform elementToCanvas;\r
+ try {\r
+ elementToCanvas = canvasToElement.createInverse();\r
+ } catch (NoninvertibleTransformException e1) {\r
+ throw new RuntimeException(e1);\r
+ }\r
+ Shape pickShapeInElementCoords = GeometryUtils.transformShape(request.pickArea, elementToCanvas);\r
+ \r
+ // Intersection with one shape is enough\r
+ if (request.pickPolicy == PickPolicy.PICK_INTERSECTING_OBJECTS)\r
+ {\r
+ for (Outline es : shapeHandlers)\r
+ {\r
+ Shape elementShape = es.getElementShape(e); \r
+ if (elementShape==null) continue nextElement;\r
+ if (GeometryUtils.intersects(pickShapeInElementCoords, elementShape))\r
+ {\r
+ result.add(e);\r
+ continue nextElement;\r
+ }\r
+ }\r
+ continue nextElement;\r
+ }\r
+ \r
+ // Contains of all shapes is required \r
+ if (request.pickPolicy == PickPolicy.PICK_CONTAINED_OBJECTS)\r
+ {\r
+ for (Outline es : shapeHandlers)\r
+ {\r
+ Shape elementShape = es.getElementShape(e);\r
+ if (!GeometryUtils.contains(pickShapeInElementCoords, elementShape))\r
+ continue nextElement;\r
+ }\r
+ result.add(e); \r
+ continue nextElement;\r
+ }\r
+ continue nextElement;\r
+ } \r
+ \r
+ // Pick by rectangle\r
+ if (request.pickPolicy == PickPolicy.PICK_INTERSECTING_OBJECTS)\r
+ {\r
+ if (GeometryUtils.intersects(request.pickArea, elementBoundsOnCanvas)) \r
+ result.add(e);\r
+ }\r
+ \r
+ else\r
+ \r
+ if (request.pickPolicy == PickPolicy.PICK_CONTAINED_OBJECTS)\r
+ {\r
+ if (GeometryUtils.contains(request.pickArea, elementBoundsOnCanvas)) \r
+ result.add(e);\r
+ }\r
+ \r
+ }\r
+\r
+ if (request.pickSorter != null) {\r
+ request.pickSorter.sort((List<IElement>) result);\r
+ finalResult.addAll(result);\r
+ }\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff