MouseMotionListener implementieren

[jobu0101]

Ich will MouseMotionListener implementieren, doch irgendwie klappt das ncith so richtig! Ich habe es jetzt hier nochmal in der anderen Form (die die funktioniert) gepostet. Doch ich will halt

			public void mouseDragged(MouseEvent arg0) {
				x = arg0.getX();
				y = arg0.getY();
				gpanel.repaint();
			}
			public void mouseMoved(MouseEvent arg0) {
				x = arg0.getX();
				y = arg0.getY();
				gpanel.repaint();
			}

als Funktionen von test05 durch Implementierung!

import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.Shape;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;

import javax.swing.JFrame;
import javax.swing.JPanel;
public class test05 extends JPanel   {

	static int x = 0, y = 0;

	static test05 gpanel = new test05();;

	protected void paintComponent(Graphics g) {
		int breite = getWidth();
		int hoch = getHeight();
		int mittex = breite / 2, mittey = hoch / 2;
		double ab = Math.pow(Math.pow(x-mittex,2) + Math.pow(y-mittey,2), 0.5);
		Shape wrechteck = new Rectangle2D.Double(0, 0, breite, hoch);
		g.setColor(Color.WHITE);
		((Graphics2D) g).fill(wrechteck);
		Shape kreis = new Ellipse2D.Double(mittex-ab, mittey-ab, 2 * ab, 2 * ab);
		Shape kreis2 = new Ellipse2D.Double(x-7, y-7, 14, 14);
		Shape kreis3 = new Ellipse2D.Double((mittex-ab)-7, mittey-7, 14, 14);
		Shape kreis4 = new Ellipse2D.Double((mittex+ab)-7, mittey-7, 14, 14);
		Shape linie1 = new Line2D.Double(mittex-ab, mittey, mittex+ab, mittey);
		Shape linie2 = new Line2D.Double(mittex-ab, mittey, x, y);
		Shape linie3 = new Line2D.Double(x, y, mittex+ab, mittey);
		g.setColor(Color.BLACK);
		((Graphics2D) g).draw(kreis);
		((Graphics2D) g).draw(kreis2);
		((Graphics2D) g).draw(kreis3);
		((Graphics2D) g).draw(kreis4);
		((Graphics2D) g).draw(linie1);
		((Graphics2D) g).draw(linie2);
		((Graphics2D) g).draw(linie3);
	}
	public static void main(String args[]) {
		JFrame f = new JFrame("Kreis");
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setSize(500, 500);
		Container con = f.getContentPane();
		con.setLayout(new GridLayout(0, 1, 0, 0));
		con.add(gpanel);
		f.setVisible(true);
		gpanel.addMouseMotionListener(new MouseMotionListener() {
			public void mouseDragged(MouseEvent arg0) {
				x = arg0.getX();
				y = arg0.getY();
				gpanel.repaint();
			}
			public void mouseMoved(MouseEvent arg0) {
				x = arg0.getX();
				y = arg0.getY();
				gpanel.repaint();
			}
		});

	}
}

 

[Beni]

Sowas?

package forum;

import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Test5 extends JPanel   {

    private int x = 0, y = 0;
    
    public Test5(){
        addMouseMotionListener(new MouseMotionListener() {
            public void mouseDragged(MouseEvent arg0) {
               x = arg0.getX();
               y = arg0.getY();
               repaint();
            }
            public void mouseMoved(MouseEvent arg0) {
               x = arg0.getX();
               y = arg0.getY();
               repaint();
            }
         });
    }
    
    protected void paintComponent(Graphics g) {
       int breite = getWidth();
       int hoch = getHeight();
       int mittex = breite / 2, mittey = hoch / 2;
       double ab = Math.pow(Math.pow(x-mittex,2) + Math.pow(y-mittey,2), 0.5);
       Shape wrechteck = new Rectangle2D.Double(0, 0, breite, hoch);
       g.setColor(Color.WHITE);
       ((Graphics2D) g).fill(wrechteck);
       Shape kreis = new Ellipse2D.Double(mittex-ab, mittey-ab, 2 * ab, 2 * ab);
       Shape kreis2 = new Ellipse2D.Double(x-7, y-7, 14, 14);
       Shape kreis3 = new Ellipse2D.Double((mittex-ab)-7, mittey-7, 14, 14);
       Shape kreis4 = new Ellipse2D.Double((mittex+ab)-7, mittey-7, 14, 14);
       Shape linie1 = new Line2D.Double(mittex-ab, mittey, mittex+ab, mittey);
       Shape linie2 = new Line2D.Double(mittex-ab, mittey, x, y);
       Shape linie3 = new Line2D.Double(x, y, mittex+ab, mittey);
       g.setColor(Color.BLACK);
       ((Graphics2D) g).draw(kreis);
       ((Graphics2D) g).draw(kreis2);
       ((Graphics2D) g).draw(kreis3);
       ((Graphics2D) g).draw(kreis4);
       ((Graphics2D) g).draw(linie1);
       ((Graphics2D) g).draw(linie2);
       ((Graphics2D) g).draw(linie3);
    }
    public static void main(String args[]) {
       JFrame f = new JFrame("Kreis");
       f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       f.setSize(500, 500);
       Container con = f.getContentPane();
       con.setLayout(new GridLayout(0, 1, 0, 0));
       con.add( new Test5() );
       f.setVisible(true);
      
    } 
}

 

[André Uhres]

Oder:

...
public class test05 extends JPanel  implements MouseMotionListener {
    public test05(){  //Konstruktor
        addMouseMotionListener(this);
    }
    public void mouseDragged(MouseEvent arg0) {
        x = arg0.getX();
        y = arg0.getY();
        repaint();
    }
    public void mouseMoved(MouseEvent arg0) {
        x = arg0.getX();
        y = arg0.getY();
        repaint();
    }
...
}

 

[jobu0101]

Oder:

...
public class test05 extends JPanel  implements MouseMotionListener {
    public test05(){  //Konstruktor
        addMouseMotionListener(this);
    }
    public void mouseDragged(MouseEvent arg0) {
        x = arg0.getX();
        y = arg0.getY();
        repaint();
    }
    public void mouseMoved(MouseEvent arg0) {
        x = arg0.getX();
        y = arg0.getY();
        repaint();
    }
...
}

So wollte ich es!

Danke

hatte das vergessen:

 public test05(){  //Konstruktor
	        addMouseMotionListener(this);
	    }

Hatte sowas bisher nochnie selber programmiert, nur in anderen Programmierungen gesehen,d a sit mir diese Zeile nie so richtig aufgefallen!