带轮廓的 Java 异形窗口

Question

我成功渲染了一个多边形窗口。但是，我想用细笔勾勒出它的轮廓。

是否可以在 Java 中勾勒出异形窗口？

这是我的工作代码，我使用 componentResized 方法来设置窗口的形状。但是，如果有任何其他方法可以获取轮廓，无论是在 Tab-Window 最小化时还是在 Tab-Window 最大化时，请提供帮助。

//LongTab.java
//Desktop Tab

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.geom.*;
import static java.awt.GraphicsDevice.WindowTranslucency.*;

public class LongTab extends JWindow implements MouseListener{

  static LongTab t;
  Boolean isVisible = false;
  final static BasicStroke stroke = new BasicStroke(2.0f);
  GeneralPath path;

  public LongTab(){
    addMouseListener(this);
    setSize(500, 1080);

    addComponentListener(new ComponentAdapter() {
      @Override
      public void componentResized(ComponentEvent e){
        Polygon polygon = new Polygon();
        polygon = new Polygon();
        polygon.addPoint(40, 1080);
        polygon.addPoint(40, 700);
        polygon.addPoint(20, 690);
        polygon.addPoint(20, 400);
        polygon.addPoint(40, 390);
        polygon.addPoint(40, 0);
        polygon.addPoint(500, 0);
        polygon.addPoint(500, 1080);

        path = new GeneralPath();
        path.append(polygon, true);
        setShape(path);
      }
    });

    setSize(40, 1080);
    setLocation(1880, 0);
  } 

  public void mouseClicked (MouseEvent me) {
    if(!isVisible) {
      isVisible=true;
      t.setSize(400, 1080);
      t.setLocation(1520, 0);
      return;
    }
    if(isVisible) {
      isVisible=false;
      t.setSize(40, 1080);
      t.setLocation(1880, 0);
    }
    return;
  }

  public void mouseEntered (MouseEvent me) {
  }

  public void mousePressed (MouseEvent me) {
  }

  public void mouseReleased (MouseEvent me) {
  } 

  public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);     
    g2.setStroke(stroke);
    //if(!isVisible)
    //g2.draw(path);
    //repaint();
  }

  public void mouseExited (MouseEvent me) {
  }  

  public static void main (String[] args){
    SwingUtilities.invokeLater(new Runnable(){
      @Override
      public void run() {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice gd = ge.getDefaultScreenDevice();

        //If shaped windows aren't supported, exit.
        if (!gd.isWindowTranslucencySupported(PERPIXEL_TRANSPARENT)) {
          System.err.println("Shaped windows are not supported");
          System.exit(0);
        } else {
          t = new LongTab();
          t.setVisible(true)
        }
      }
    });
  }
}

Answer 1

我修改了您的代码以显示异形窗口轮廓。

    //LongTab.java
//Desktop Tab

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsDevice.WindowTranslucency;
import java.awt.GraphicsEnvironment;
import java.awt.Polygon;
import java.awt.RenderingHints;
import java.awt.geom.GeneralPath;

import javax.swing.JFrame;

public class LongTab extends JFrame{

private Polygon polygon;

public LongTab() {
    setSize(500, 720);
    setLocation(10, 10);

    setUndecorated(true);


    polygon = new Polygon();
    polygon = new Polygon();
    polygon.addPoint(40, 720);
    polygon.addPoint(40, 700);
    polygon.addPoint(20, 690);
    polygon.addPoint(20, 400);
    polygon.addPoint(40, 390);
    polygon.addPoint(40, 20);
    polygon.addPoint(500, 20);
    polygon.addPoint(500, 720);

    GeneralPath path = new GeneralPath();
    path.append(polygon, true);
    setShape(path);
}

public void paint(Graphics g) {
    super.paint(g);

    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setStroke(new BasicStroke(2.0f));
    g2.setColor(Color.RED);
    g2.draw(polygon);
}

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();

    // If shaped windows aren't supported, exit.
    if (!gd.isWindowTranslucencySupported(WindowTranslucency.PERPIXEL_TRANSLUCENT)) {
        System.err.println("Shaped windows are not supported");
        System.exit(0);
    } else {
        new LongTab().setVisible(true);
    }
}
}

请注意，我还使多边形变小了一些，因为我没有适合您原始多边形的高清屏幕。

最后我删除了事件处理代码，因为我无法理解您尝试用鼠标点击做什么。有了这个工作起点，您可以再次添加事件处理代码。