X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fcontent%2FArrowConfigurer.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fcontent%2FArrowConfigurer.java;h=abe51ce9606b1950dc11e1039a1abd639a258cb6;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

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