--- /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.diagram.handler;\r
+\r
+import java.awt.BasicStroke;\r
+import java.awt.Color;\r
+import java.awt.Shape;\r
+import java.awt.geom.Area;\r
+import java.awt.geom.Path2D;\r
+import java.util.Collection;\r
+import java.util.concurrent.Future;\r
+import java.util.concurrent.TimeUnit;\r
+\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.canvas.SGDesignation;\r
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGCleanup;\r
+import org.simantics.g2d.canvas.impl.SGNodeReflection.SGInit;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.ElementUtils;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.SelectionOutline;\r
+import org.simantics.scenegraph.g2d.G2DParentNode;\r
+import org.simantics.scenegraph.g2d.nodes.ShapeNode;\r
+import org.simantics.scenegraph.g2d.nodes.SingleElementNode;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+import org.simantics.utils.datastructures.hints.IHintListener;\r
+import org.simantics.utils.datastructures.hints.IHintObservable;\r
+import org.simantics.utils.threads.ThreadUtils;\r
+\r
+/**\r
+ * This participant highlights the specified DiagramSelection on its source\r
+ * diagram as a stroked frame tightly surrounding the selected elements.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class HighlightMode extends AbstractCanvasParticipant implements IHintListener {\r
+\r
+ private final Color CUT_COLOR = Color.ORANGE;\r
+ private final Color COPY_COLOR = new Color(128, 220, 150);\r
+\r
+ private final BasicStroke DEFAULT_STROKE = new BasicStroke(3.0f);\r
+\r
+ DiagramSelection selection;\r
+ int selectionId;\r
+ int paintPriority;\r
+\r
+ SingleElementNode highlightNode;\r
+ Collection<IElement> highlightElements;\r
+\r
+ public HighlightMode(DiagramSelection selection, int selectionId, int paintPriority) {\r
+ this.selection = selection;\r
+ this.selectionId = selectionId;\r
+ this.paintPriority = paintPriority;\r
+ }\r
+\r
+ @SGInit(designation = SGDesignation.CANVAS)\r
+ public void init(G2DParentNode parent) {\r
+ highlightNode = parent.addNode("cut/copy source highlight", SingleElementNode.class);\r
+ highlightNode.setZIndex(paintPriority);\r
+ highlightNode.setVisible(false);\r
+\r
+ // This slows rendering down too much to use.\r
+ //highlightNode.setComposite(AlphaComposite.SrcOver.derive(0.4f));\r
+\r
+ this.highlightElements = selection.getOriginalElements();\r
+\r
+ for (IElement e : highlightElements)\r
+ e.addHintListener(this);\r
+\r
+ paintSelectionFrames(highlightNode, selection, selectionId);\r
+ }\r
+\r
+ @SGCleanup\r
+ public void cleanupSG() {\r
+ for (IElement e : highlightElements)\r
+ e.removeHintListener(this);\r
+\r
+ highlightNode.remove();\r
+ }\r
+\r
+ void paintSelectionFrames(G2DParentNode parentNode, DiagramSelection selection, int selectionId) {\r
+ Area cutArea = new Area();\r
+ for (IElement e : selection.getOriginalElements()) {\r
+ ElementClass ec = e.getElementClass();\r
+ SelectionOutline so = ec.getAtMostOneItemOfClass(SelectionOutline.class);\r
+ Shape shape = so != null ? so.getSelectionShape(e) : ElementUtils.getElementShapeOrBoundsOnDiagram(e);\r
+ cutArea.add(new Area(shape));\r
+ }\r
+ if (!cutArea.isEmpty()) {\r
+ // Is rendering of Area slower than Path2D?\r
+ Path2D.Double path = new Path2D.Double(cutArea);\r
+\r
+ ShapeNode shapeNode = parentNode.getOrCreateNode("highlight", ShapeNode.class);\r
+ shapeNode.setShape(path);\r
+ shapeNode.setScaleStroke(true);\r
+ shapeNode.setStroke(DEFAULT_STROKE);\r
+ shapeNode.setFill(false);\r
+ shapeNode.setColor(selection.isCut() ? CUT_COLOR : COPY_COLOR);\r
+\r
+ highlightNode.setVisible(true);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void hintChanged(IHintObservable sender, Key key, Object oldValue, Object newValue) {\r
+ if (key == ElementHints.KEY_TRANSFORM) {\r
+ //System.out.println("transform changed for " + sender + " to " + newValue);\r
+ highlightNode.setVisible(false);\r
+ deferredHighlightUpdate();\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {\r
+ }\r
+\r
+ Future<?> updateTask;\r
+\r
+ private synchronized void deferredHighlightUpdate() {\r
+ if (updateTask == null) {\r
+ updateTask = ThreadUtils.getNonBlockingWorkExecutor().schedule(\r
+ updateScheduler,\r
+ 100,\r
+ TimeUnit.MILLISECONDS);\r
+ }\r
+ }\r
+\r
+ Runnable updateScheduler = new Runnable() {\r
+ @Override\r
+ public void run() {\r
+ ICanvasContext ctx = getContext();\r
+ if (ctx != null)\r
+ ThreadUtils.asyncExec(ctx.getThreadAccess(), painter);\r
+ }\r
+ };\r
+\r
+ Runnable painter = new Runnable() {\r
+ @Override\r
+ public void run() {\r
+ if (!isRemoved())\r
+ paintSelectionFrames(highlightNode, selection, selectionId);\r
+ updateTask = null;\r
+ }\r
+ };\r
+\r
+}
\ No newline at end of file
Code Review / simantics / platform.git / blobdiff