problem ze sluchaczem w aplecie

Question

Czesc, mam pewien problem w dzialaniu programu. Kombinuje juz 3 dni i nie potrafie wymyslic jak wywolac pewna akcje za pomoca sluchacza. Problem polega na tym, ze chce by program po wybraniu odpowiedniego koloru i figury, narysowal ja w danym kolorze. Pomoze ktos mnie nakierowac badz jak zmodyfikowac kod? Z gory dziekuje!

import java.awt.Button;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.applet.Applet;
import java.awt.Color;


public class az extends Applet implements MouseListener, MouseMotionListener, KeyListener, ActionListener {
    int mouseX1=0;
    int mouseY1=0;
    int mouseX2=0;
    int mouseY2=0;
    int prostokat=0;
    Button b= new Button("linia");
    Button b1= new Button("prostokat");
    Button b2= new Button("cos okraglego");
    Button b3= new Button();
    Button b4= new Button();
    Button b5= new Button();
    
    public void init() {
        addMouseListener(this);
        addMouseMotionListener(this);
        addKeyListener(this);
        
        b.setBounds(10,100,80, 30);
        b.addActionListener((ActionListener) new b());
        add(b);
        setLayout(null);
        b1.setBounds(10,130,80, 30);
        b1.addActionListener((ActionListener) new b1());
        add(b1);
        setLayout(null);
        b2.setBounds(10,160,80, 30);
        b2.addActionListener((ActionListener) new b2());
        add(b2);
        setLayout(null);
        b3.setBounds(10,70,80, 30);
        b3.addActionListener((ActionListener) new b3());
        b3.setBackground(Color.DARK_GRAY);
        add(b3);
        //setBackground(Color.Blue);
        setLayout(null);
        b4.setBounds(10,40,80, 30);
        b4.addActionListener((ActionListener) new b4());
        b4.setBackground(Color.red);
        add(b4);
        //setBackground(Color.RED);
        setLayout(null);
        b5.setBounds(10,10,80, 30);
        b5.addActionListener((ActionListener) new b5());
        b5.setBackground(Color.GREEN);
        add(b5);
        //setBackground(Color.Green);
        setLayout(null);
      
    }

    // TODO overwrite start(), stop() and destroy() methods

    @Override
    public void mouseClicked(MouseEvent me) {
       throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. 
        
    }

    @Override
    public void mousePressed(MouseEvent me) {
       mouseX1=me.getX();
        mouseY1=me.getY(); 
         repaint();
    }

    @Override
    public void mouseReleased(MouseEvent me) {
         mouseX2=me.getX();
        mouseY2=me.getY();
        repaint();
         
     }

    @Override
    public void mouseEntered(MouseEvent me) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseExited(MouseEvent me) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseDragged(MouseEvent me) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void mouseMoved(MouseEvent me) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void keyTyped(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void keyPressed(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void keyReleased(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void actionPerformed(ActionEvent me) {
        if(prostokat==0)
            prostokat=1;
        else
            prostokat=0;
    }
    public void paint(Graphics gr)
        {
           
            if (prostokat==0)
            gr.drawLine(mouseX1, mouseY1, mouseX2, mouseY2);
            else 	
                if(mouseX2-mouseX1>0)
                    gr.drawRect(mouseX1, mouseY1, mouseX2-mouseX1,mouseY2- mouseY1); 
                else
                    gr.drawRect(mouseX2, mouseY2, mouseX1-mouseX2,mouseY1- mouseY2); 
            
        }

             

         class b implements ActionListener
         {
         public void actionPerformed(ActionEvent e)
	    {   Graphics rysuj = getGraphics();
                    if (prostokat==0)
            rysuj.drawLine(mouseX1, mouseY1, mouseX2, mouseY2);
                  
         }}
         
          class b1 implements ActionListener
         {
         public void actionPerformed(ActionEvent e){
             Graphics rysuj = getGraphics();
                if(mouseX2-mouseX1>0)
                   rysuj.drawRect(mouseX1, mouseY1, mouseX2-mouseX1,mouseY2- mouseY1); 
                else
                    rysuj.drawRect(mouseX2, mouseY2, mouseX1-mouseX2,mouseY1- mouseY2);
         }}          
         class b2 implements ActionListener
        {
         public void actionPerformed(ActionEvent e)
	    {   
                  
        }}
           
         class b3 implements ActionListener
         {
         public void actionPerformed(ActionEvent e)
	    {   
                               
            }
         }
         class b4 implements ActionListener
          {
         public void actionPerformed(ActionEvent e)
	    {  
                
         }
         }
         
        class b5 implements ActionListener
         {
         public void actionPerformed(ActionEvent e)
	    {   
                 
    }

        }
         }

 

Answer 1

Chyba najlepszą ideą była by zmienna w klasie az typu Color np. Color kolorRysowania; początkowo ustawiona na BLACK, następnie klikając na Buttony mające zmienić kolor rysowania powinny zmieniać kolorRysowania na im odpowiadający. Ostatnim krokiem wybierając rysowanie prostokątu czy innej figury wystarczy ustawić kolor zmiennej typu Graphics w metodzie paint na kolorRysowania.