X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Felement%2Fhandler%2Fimpl%2FOutlinePick.java;fp=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Felement%2Fhandler%2Fimpl%2FOutlinePick.java;h=6a2222b9f917fed11758549d4565405bfb17328c;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08 diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/OutlinePick.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/OutlinePick.java new file mode 100644 index 000000000..6a2222b9f --- /dev/null +++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/OutlinePick.java @@ -0,0 +1,84 @@ +/******************************************************************************* + * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * in Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.g2d.element.handler.impl; + +import java.awt.Shape; +import java.awt.geom.AffineTransform; +import java.awt.geom.NoninvertibleTransformException; +import java.awt.geom.Rectangle2D; +import java.util.List; + +import org.simantics.g2d.diagram.handler.PickRequest.PickPolicy; +import org.simantics.g2d.element.IElement; +import org.simantics.g2d.element.handler.ElementHandler; +import org.simantics.g2d.element.handler.Outline; +import org.simantics.g2d.element.handler.Pick; +import org.simantics.g2d.element.handler.Transform; +import org.simantics.g2d.utils.GeometryUtils; + +/** + * @author Tuukka Lehtonen + */ +public class OutlinePick implements Pick { + + public static final ElementHandler INSTANCE = new OutlinePick(); + + private static final long serialVersionUID = 1L; + + @Override + public boolean pickTest(IElement e, Shape s, PickPolicy policy) { + Rectangle2D pickArea = null; + if (s instanceof Rectangle2D) + pickArea = (Rectangle2D) s; + else + // FIXME: suboptimal, but works. + pickArea = s.getBounds2D(); + + // Pick with shape handler(s) + List shapeHandlers = e.getElementClass().getItemsByClass(Outline.class); + if (!shapeHandlers.isEmpty()) { + // Convert pick shape to element coordinates + Transform t = e.getElementClass().getSingleItem(Transform.class); + AffineTransform canvasToElement = t.getTransform(e); + AffineTransform elementToCanvas; + try { + elementToCanvas = canvasToElement.createInverse(); + } catch (NoninvertibleTransformException e1) { + throw new RuntimeException(e1); + } + Shape pickShapeInElementCoords = GeometryUtils.transformShape(pickArea, elementToCanvas); + + // Intersection with one shape is enough + switch (policy) { + case PICK_INTERSECTING_OBJECTS: { + for (Outline es : shapeHandlers) { + Shape elementShape = es.getElementShape(e); + if (elementShape == null) + return false; + if (GeometryUtils.intersects(pickShapeInElementCoords, elementShape)) + return true; + } + return false; + } + case PICK_CONTAINED_OBJECTS: { + for (Outline es : shapeHandlers) { + Shape elementShape = es.getElementShape(e); + if (GeometryUtils.contains(pickShapeInElementCoords, elementShape)) + return true; + } + return false; + } + } + } + return false; + } +}