Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / content / ArrowConfigurer.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/content/ArrowConfigurer.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/content/ArrowConfigurer.java
new file mode 100644 (file)
index 0000000..abe51ce
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/content/ArrowConfigurer.java
@@ -0,0 +1,85 @@
+/*******************************************************************************\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.content;\r
+\r
+import java.util.EnumSet;\r
+import java.util.StringTokenizer;\r
+\r
+import org.simantics.g2d.connection.EdgeVisualsConfigurer;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.EdgeVisuals;\r
+import org.simantics.g2d.element.handler.EdgeVisuals.ArrowType;\r
+import org.simantics.g2d.element.handler.EdgeVisuals.EdgeEnd;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class ArrowConfigurer implements EdgeVisualsConfigurer {\r
+\r
+    private ArrowType arrow     = ArrowType.None;\r
+    private double    arrowSize = 1.0;\r
+\r
+    public ArrowConfigurer() {\r
+    }\r
+\r
+    public ArrowConfigurer(ArrowType arrow, double arrowSize) {\r
+        this.arrow = arrow;\r
+        this.arrowSize = arrowSize;\r
+    }\r
+\r
+    public ArrowConfigurer(String description) {\r
+        StringTokenizer tokenizer = new StringTokenizer(description);\r
+        if (tokenizer.hasMoreTokens()) {\r
+            String type = tokenizer.nextToken();\r
+            this.arrow = parseType(type);\r
+        }\r
+        if (tokenizer.hasMoreTokens()) {\r
+            String size = tokenizer.nextToken();\r
+            this.arrowSize = parseSize(size);\r
+        }\r
+    }\r
+\r
+    private double parseSize(String size) {\r
+        try {\r
+            return Double.parseDouble(size);\r
+        } catch (NumberFormatException e) {\r
+            return 1.0;\r
+        }\r
+    }\r
+\r
+    private ArrowType parseType(String type) {\r
+        String lower = type.toLowerCase();\r
+        if ("none".equals(lower))\r
+            return ArrowType.None;\r
+        if ("stroke".equals(lower))\r
+            return ArrowType.Stroke;\r
+        if ("fill".equals(lower))\r
+            return ArrowType.Fill;\r
+        if ("both".equals(lower))\r
+            return ArrowType.Both;\r
+        throw new IllegalArgumentException("unrecognized arrow type: " + type);\r
+    }\r
+\r
+    @Override\r
+    public void configure(IElement edge, EdgeVisuals visuals, EnumSet<EdgeEnd> ends) {\r
+        for (EdgeEnd end : ends) {\r
+            visuals.setArrowType(edge, end, arrow);\r
+            visuals.setArrowSize(edge, end, arrowSize);\r
+        }\r
+    }\r
+\r
+    @Override\r
+    public String toString() {\r
+        return getClass().getSimpleName() + "[" + arrow + " " + arrowSize + "]";\r
+    }\r
+\r
+}\r