swing/swt 支持多屏幕显示

骑猪看日落 2023-10-17 23:54 61阅读 0赞

swing中对于双屏的支持

public class Main{
    	public static void main(String[] args) {
    		JFrame jf = new JFrame(); 
    		jf.setSize(400, 400);
    		jf.setDefaultCloseOperation(3); 
    		jf.setVisible(true);
    		Main.showOnScreen(0, jf);//主屏显示
    
    		JFrame jf2 = new JFrame(); 
    		jf2.setSize(200, 400);
    		jf2.setDefaultCloseOperation(3); 
    		jf2.setVisible(true);
    		Main.showOnScreen(1, jf2);//副屏显示
    	}
    
    
    	/**
    	* 指定显示屏幕相应内容
    	* screen 显示器序号
    	* /
    	public static void showOnScreen(int screen, JFrame frame) {
    		GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    		GraphicsDevice[] gd = ge.getScreenDevices();
    		if (screen > -1 && screen < gd.length) {//一个或多个屏幕
    			frame.setLocation(gd[screen].getDefaultConfiguration().getBounds().x, frame.getY());
    		} else if (gd.length > 0) {//只有一个屏幕
    			frame.setLocation(gd[0].getDefaultConfiguration().getBounds().x, frame.getY());
    		} else {//未获取到屏幕信息
    			throw new RuntimeException("No Screens Found");
    		}
    	}
    }

swt对于双屏的支持

import org.eclipse.swt.SWT;
    import org.eclipse.swt.layout.FormLayout;
    import org.eclipse.swt.widgets.Display;
    import org.eclipse.swt.widgets.Monitor;
    import org.eclipse.swt.widgets.Shell;
    
    import cn.com.cordiality.UI.MonitorManager;
    
    public class Main {
    	public static void main(String[] args) {
    		Display display = Display.getDefault();
    		Shell shell = new Shell(display,SWT.CLOSE);//主屏显示
    		shell.setSize(600,400);
    		//...//省略界面装配部分代码
    		Monitor[] monitors = MonitorManager.getInstance().getMonitors();
    		if (monitors.length >= 2) {
    			Monitor monitor = monitors[0];
    			Monitor monitor1 = monitors[1];
    
    			if ((monitor != null) && (monitor1 != null)) {//第二个屏幕
    				Demo demo = new Demo(shell, monitor.getClientArea().width, 0, monitor1.getClientArea().width, monitor1.getClientArea().height);
    				demo.open();
    			}
    		}
    		
    		shell.open();
    		while (!shell.isDisposed())
    			if (!display.readAndDispatch())
    				display.sleep();
    	}
    
    }
    
    class Demo {
    	Shell shell;
    	Display display;
    
    	public Demo(Shell parent, int left, int top, int maxWidth, int maxHeight) {
    		shell = new Shell(parent, SWT.EMBEDDED);
    		shell.setSize(maxWidth, maxHeight);
    		shell.setLocation(left, top);
    		shell.setLayout(new FormLayout());
    		display = this.shell.getDisplay();
    
    		// ...//省略界面装配部分代码
    	}
    	
    	public void open() {
    		this.shell.open();
    		while (!this.shell.isDisposed())
    			if (!this.display.readAndDispatch())
    				this.display.sleep();
    	}
    }

MonitorManager 类

package cn.com.cordiality.UI;
    
    import org.eclipse.swt.widgets.Display;
    import org.eclipse.swt.widgets.Monitor;
    
    public class MonitorManager {
       private Monitor[] monitors;
       private static MonitorManager monitorManager;
    
       public static MonitorManager getInstance() {
       	if (monitorManager == null) {
       		try {
       			monitorManager = new MonitorManager(Display.getCurrent().getMonitors());
       		} catch (Exception e) {
       			e.printStackTrace();
       		}
       	}
       	return monitorManager;
       }
    
       public MonitorManager(Monitor[] monitors) {
       	this.monitors = monitors;
       }
    
       public Monitor[] getMonitors() {
       	return this.monitors;
       }
    }

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