--- /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.scenegraph.g2d.nodes;\r
+\r
+import java.awt.BasicStroke;\r
+import java.awt.Color;\r
+import java.awt.Graphics2D;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Rectangle2D;\r
+\r
+import org.simantics.scenegraph.g2d.G2DNode;\r
+import org.simantics.scenegraph.utils.GeometryUtils;\r
+\r
+public class SelectionNode extends G2DNode implements Decoration {\r
+ /**\r
+ * \r
+ */\r
+ private static final long serialVersionUID = -2879575230419873230L;\r
+\r
+ public transient static final BasicStroke SELECTION_STROKE = new BasicStroke(1.0f,\r
+ BasicStroke.CAP_SQUARE, BasicStroke.CAP_SQUARE, 10.0f,\r
+ new float[] { 5.0f, 5.0f }, 0.0f);\r
+\r
+ protected Rectangle2D bounds = null;\r
+ protected Color color = null;\r
+ protected transient Rectangle2D rect;\r
+ protected transient BasicStroke scaledStroke;\r
+ protected transient double previousScaleRecip = Double.NaN;\r
+\r
+ @SyncField({"transform", "bounds", "color"})\r
+ public void init(AffineTransform transform, Rectangle2D bounds, Color color) {\r
+ this.transform = transform;\r
+ this.bounds = bounds;\r
+ this.color = color;\r
+ }\r
+\r
+ @Override\r
+ public void render(Graphics2D g) {\r
+ if (bounds == null) return;\r
+\r
+ // Prevent exceptions during rendering.\r
+ if (transform.getDeterminant() == 0)\r
+ return;\r
+\r
+ AffineTransform ot = g.getTransform();\r
+\r
+ g.setColor(color);\r
+ g.transform(transform);\r
+\r
+ AffineTransform tx = g.getTransform();\r
+ //System.out.println("tx: " + tx);\r
+ double scale = GeometryUtils.getScale(tx);\r
+ //System.out.println("scale: " + scale);\r
+ double scaleRecip = 1.0 / scale;\r
+ //System.out.println("scale: " + scaleRecip);\r
+\r
+ // Prevent stroke reallocation while panning.\r
+ // Zooming will trigger reallocation.\r
+ if (scaledStroke == null || scaleRecip != previousScaleRecip) {\r
+ scaledStroke = GeometryUtils.scaleStroke( SELECTION_STROKE, (float) scaleRecip);\r
+ previousScaleRecip = scaleRecip;\r
+ }\r
+ g.setStroke(scaledStroke);\r
+\r
+ double padding = 5.0 * scaleRecip;\r
+ double paddingX = padding;\r
+ double paddingY = padding;\r
+\r
+ if (rect == null)\r
+ rect = new Rectangle2D.Double();\r
+ rect.setFrame(bounds.getMinX() - paddingX, bounds.getMinY() - paddingY,\r
+ bounds.getWidth() + 2.0*paddingX, bounds.getHeight() + 2.0*paddingY);\r
+ g.draw(rect);\r
+ \r
+ g.setTransform(ot);\r
+\r
+ }\r
+\r
+ @Override\r
+ public Rectangle2D getBoundsInLocal() {\r
+ return bounds;\r
+ }\r
+}\r