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Draw2d 中 Label Clickable ButtonModel的使用

程序员文章站 2024-03-24 11:16:10
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摘要:Draw2d 实现按钮和标签一样的小控件。

public class Draw2D_Example {
	public static void main(String args[]) {
		final Label label = new Label("Press a button!");
		Shell shell = new Shell();
		LightweightSystem lws = new LightweightSystem(shell);
		Figure parent = new Figure();
		parent.setLayoutManager(new XYLayout());
		lws.setContents(parent);
		
		Clickable above = new CheckBox("I'm above!");
		parent.add(above, new Rectangle(10,10,80,20));
		ButtonModel aModel = new ToggleModel();
		aModel.addChangeListener(new ChangeListener() {
			public void handleStateChanged(ChangeEvent e) {
				System.out.println(e.getPropertyName());label.setText("Above");
			}
		});
		above.setModel(aModel);
		
		Clickable below = new CheckBox("I'm below!");
		parent.add(below, new Rectangle(10,40,80,20));
		ButtonModel bModel = new ToggleModel();
		bModel.addChangeListener(new ChangeListener() {
			public void handleStateChanged(ChangeEvent e) {
				label.setText("Below");
			}
		});
		below.setModel(bModel);
		
		ButtonGroup bGroup = new ButtonGroup();
		bGroup.add(aModel);
		bGroup.add(bModel);
		bGroup.setDefault(aModel);
		
		parent.add(label, new Rectangle(10,70,80,20));
		
		shell.setSize(130,120);
		shell.open();
		shell.setText("Example");
		Display display = Display.getDefault();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep ();
		}
	}

}

 

图片:
Draw2d 中 Label Clickable ButtonModel的使用
 

 

结果 写道
mouseover
armed
pressed
selected
pressed
armed
mouseover
mouseover
armed
pressed
selected
pressed
armed
mouseover

 

ChangeListener可以捕捉各种各样的鼠标操作。

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