4

我成功地渲染了一个多边形窗口。但是，我想用细笔画出它的轮廓。

是否可以在 Java 中勾勒出一个形状的窗口？

这是我的工作代码，我正在使用 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大纲，无论是在选项卡窗口最小化时还是选项卡窗口最大化时，请帮助。

//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)
        }
      }
    });
  }
}
4

3 回答 3

1

我修改了您的代码以显示形状的窗口轮廓。

    //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，因为我没有高清屏幕来适应您的原始多边形。

最后我删除了事件处理代码，因为我不明白你想用鼠标点击做什么。有了这个工作起点，您可以再次添加您的事件处理代码。

于 2012-05-20T23:50:25.270 回答
1

好的，添加导入，并取出半透明验证。当我运行这个 Java6 代码时，红色轮廓显示 <1 秒，然后轮廓消失了！不知道为什么？

//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;
import com.sun.awt.AWTUtilities.*;

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);
    com.sun.awt.AWTUtilities.setWindowShape(this, 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);
    //}
}
}
于 2012-05-23T19:25:04.967 回答
0

我设法弄清楚如何用 Java 6 解决这个问题。似乎只是简单地在我的绘画方法中取出抗锯齿线就可以解决图形渲染故障，其中轮廓不够干净。这是完整的工作代码......

问候奥布里。

 //LongTab.java
 //Desktop Tab

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import java.awt.geom.*;
    import com.sun.awt.AWTUtilities.*;

    public class LongTab extends JWindow implements MouseListener{

    static LongTab t;
    Boolean isVisible = false;

    GeneralPath closed;

    final static BasicStroke stroke = new BasicStroke(2.0f);
    GeneralPath path;


    //Constructor
    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);
    com.sun.awt.AWTUtilities.setWindowShape(t, path);

    }});

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

    }//end of constructor.

     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 mouseExited (MouseEvent me) {}  

     public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;

        //antialias commented out to fix outline glitch.
        //g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    g2.setStroke(stroke);

    g2.drawLine(40, 1080, 40, 700);
    g2.drawLine(40, 700, 20, 690);
    g2.drawLine(20, 690, 20, 400);
    g2.drawLine(20, 400, 40,390);
    g2.drawLine(40, 390, 40, 0);



    }
    public static void main (String[] args){

                t = new LongTab();
                t.setVisible(true);
    }

}
于 2012-06-20T07:43:20.667 回答