FlowchartMessagePainter.java |
1 /**************************************************************************** 2 * This demo file is part of yFiles for Java 2.14. 3 * Copyright (c) 2000-2017 by yWorks GmbH, Vor dem Kreuzberg 28, 4 * 72070 Tuebingen, Germany. All rights reserved. 5 * 6 * yFiles demo files exhibit yFiles for Java functionalities. Any redistribution 7 * of demo files in source code or binary form, with or without 8 * modification, is not permitted. 9 * 10 * Owners of a valid software license for a yFiles for Java version that this 11 * demo is shipped with are allowed to use the demo source code as basis 12 * for their own yFiles for Java powered applications. Use of such programs is 13 * governed by the rights and conditions as set out in the yFiles for Java 14 * license agreement. 15 * 16 * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 19 * NO EVENT SHALL yWorks BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 23 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 24 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 ***************************************************************************/ 28 package demo.view.flowchart.painters; 29 30 import y.view.NodeRealizer; 31 32 import java.awt.Shape; 33 import java.awt.geom.GeneralPath; 34 35 /** 36 * Draws the message symbols of flowchart diagrams. 37 * There are two types of messages: user messages and network messages. 38 */ 39 public class FlowchartMessagePainter extends AbstractFlowchartPainter{ 40 41 /** 42 * Determines if this painter will paint a flowchart user message symbol 43 * or a flowchart network message symbol. 44 */ 45 private final boolean isUserMessage; 46 47 /** 48 * Initializes a new <code>FlowchartMessagePainter</code> instance for 49 * user message or network message visualization. 50 * @param type if <code>true</code>, this painter will paint the user message 51 * symbol; otherwise it will paint the network message symbol. 52 */ 53 public FlowchartMessagePainter( boolean type ) { 54 isUserMessage = type; 55 } 56 57 protected Shape newShape( NodeRealizer context ) { 58 double x = context.getX(); 59 double y = context.getY(); 60 double height = context.getHeight(); 61 double width = context.getWidth(); 62 double borderDistance = Math.min(FLOWCHART_DEFAULT_MESSAGE_INCLINATION *height, FLOWCHART_DEFAULT_MESSAGE_INCLINATION *width); 63 64 GeneralPath shapePath = new GeneralPath(); 65 if (isUserMessage) { 66 shapePath.moveTo((float) x, (float) y); 67 shapePath.lineTo((float) (x + width - borderDistance), (float) y); 68 shapePath.lineTo((float) (x + width), (float) (y + height*0.5)); 69 shapePath.lineTo((float) (x + width - borderDistance), (float)(y + height)); 70 shapePath.lineTo((float) x, (float) (y + height)); 71 shapePath.closePath(); 72 } else { // is network message 73 shapePath.moveTo((float) x, (float) y); 74 shapePath.lineTo((float) (x + width), (float) y); 75 shapePath.lineTo((float) (x + width), (float) (y + height)); 76 shapePath.lineTo((float) x, (float) (y + height)); 77 shapePath.lineTo((float) (x + borderDistance), (float) (y + height*0.5)); 78 shapePath.closePath(); 79 } 80 return shapePath; 81 } 82 } 83