Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scenegraph / src / org / simantics / scenegraph / g2d / nodes / SelectionNode.java

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SelectionNode.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SelectionNode.java
new file mode 100644 (file)
index 0000000..3939e1c
--- /dev/null
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SelectionNode.java
@@ -0,0 +1,92 @@
+/*******************************************************************************\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