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[simantics/platform.git] / bundles / org.simantics.diagram.connection / src / org / simantics / diagram / connection / rendering / arrows / ArrowExampleLineEndStyle.java
1 /*******************************************************************************\r
2  * Copyright (c) 2011 Association for Decentralized Information Management in\r
3  * Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.diagram.connection.rendering.arrows;\r
13 \r
14 import java.awt.Graphics2D;\r
15 import java.awt.geom.AffineTransform;\r
16 import java.awt.geom.Path2D;\r
17 import java.awt.geom.Rectangle2D;\r
18 import java.io.Serializable;\r
19 \r
20 \r
21 /**\r
22  * @author Hannu Niemistö\r
23  */\r
24 public enum ArrowExampleLineEndStyle implements ILineEndStyle, Serializable {\r
25     INSTANCE;\r
26 \r
27     public static final double length = 8.0;\r
28     public static final double width = 4.0;\r
29     public static final double space = 10.0;\r
30     \r
31     @Override\r
32     public void render(Graphics2D g, double x, double y, int dir) {\r
33         AffineTransform old = g.getTransform();\r
34         g.translate(x, y);\r
35         g.rotate(dir*Math.PI*0.5);\r
36 \r
37         //g.setColor(Color.BLACK);\r
38 \r
39         g.fill(new Rectangle2D.Double(\r
40                 -10, -10, 20, 20\r
41                 ));\r
42 \r
43         Path2D.Double path = new Path2D.Double();\r
44         path.moveTo(-space, 0);\r
45         path.lineTo(-length-space, -width);\r
46         path.lineTo(-length-space, +width);\r
47         path.closePath();\r
48 \r
49         g.fill(path);\r
50         g.setTransform(old);\r
51     }\r
52 \r
53     @Override\r
54     public double getLineEndLength(int direction) {\r
55         return length+space;\r
56     }\r
57 }\r