【学习】Eclipse官方Zest的两个例证（一）

【学习】Eclipse官方Zest的两个例子（一）

原文的链接：http://wiki.eclipse.org/index.php/GEF_Zest_Visualization#Layout_Algorithms

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感觉不错的有这么几点：

代码很少；居然开始打开有动态效果；三个GraphNode点都是可以用鼠标动态调整位置的；三个GraphNode点和三个GraphConnection都可以选中，而且选中变色；三个GraphNode点都有Tooltip；三个GraphNode点拖动出窗口，自动有滚动条；

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源代码：

/** * This snippet creates a very simple graph where Rock is connected to Paper * which is connected to scissors which is connected to rock. *  * The nodes a layed out using a SpringLayout Algorithm, and they can be moved * around. *  * @author Ian Bull *  */public class GraphSnippet1 {private static Display display = Display.getDefault();private static Shell shell;private static void createShell() {shell = new Shell(display);shell.setText("GraphSnippet1");shell.setLayout(new FillLayout());shell.setSize(400, 400);}private static void openShell() {shell.open();while (!shell.isDisposed()) {while (!display.readAndDispatch()) {display.sleep();}}}public static void main(String[] args) {createShell();createZestExample();openShell();}private static void createZestExample() {Graph g = new Graph(shell, SWT.NONE);GraphNode n = new GraphNode(g, SWT.NONE, "Paper");GraphNode n2 = new GraphNode(g, SWT.NONE, "Rock");GraphNode n3 = new GraphNode(g, SWT.NONE, "Scissors");new GraphConnection(g, SWT.NONE, n, n2);new GraphConnection(g, SWT.NONE, n2, n3);new GraphConnection(g, SWT.NONE, n3, n);g.setLayoutAlgorithm(new SpringLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING), true);}}

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效果图：

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