Jslider help

Makaule

hello
how to write program which could zoom in or zoom out x and y coordinates using two JSliders. One JSlider (horizontal) for x, and other JSlider (vertical) for y.

I want to put them in this program
myFrame.java
java code

/* 
 * myFrame.java 
 */
import javax.swing.JFrame; 
 
public class myFrame extends JFrame{ 
     
    public myFrame() { 
         
        getContentPane().add(cpanel); 
        setTitle("XY-Curve"); 
        setSize(600,450); 
        setLocation(200,200); 
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
        setVisible(true); 
    } 
     
    public static void main(String[] args) { 
        new myFrame(); 
    } 
    myPanel cpanel=new myPanel(); 
}

myPanel.java

java code

/* 
 * myPanel.java 
 */ 
 
import java.awt.*; 
import java.awt.geom.*; 
import java.awt.Color; 
import java.awt.event.*; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import javax.swing.*; 
import javax.swing.JButton; 
import javax.swing.JPanel; 
 
public class myPanel extends JPanel{ 
 
	private JButton randButton=new JButton("Draw"); 
	private double[] temparray = new double[]{70.05d, 10.20d, 25.00d, 50.53d, 40.60, 100.00}; 
	private float[] timearray=new float[] {8.15f, 8.45f, 9.15f, 9.45f, 10.15f, 10.45f}; 
	private double oldy; 
	private float oldx; 
	Graphics2D g2; 
 
	public myPanel() { 
 
        randButton.addActionListener(new ActionListener() { 
            public void actionPerformed(ActionEvent e) { 
 
                repaint(); 
            } 
        }); 

add(randButton); 
    } 
     
	public void paint(Graphics g) { 
		g2 = (Graphics2D) g; 
		g2.drawLine(30,400,30,100);		// y koordinaciu asis 
		g2.drawLine(30,400,500,400);		// x koordinaciu asis 
		g2.setColor(Color.BLUE); 
		oldy=0.0d; 
		oldx=0.0f; 
		for(int i=0;i<timearray.length*40;i+=40) { 
			g2.draw(new Line2D.Double(70+i-40, 400-oldy, 70+i, 400-temparray[i/40])); 
			oldy=temparray[i/40]; 
			oldx=timearray[i/40]; 
			g.setColor(Color.RED.brighter()); 
			g.drawOval(70+i-2, (int)(400-temparray[i/40]-2),4,4); 
			for(int j=0; j<300; j+=20){ 
				g.drawString(""+j+"", 4, (int)(400-j)); 
			} 
//			g.drawString(""+(int)oldy+"", 4, (int)(400-temparray[i/40]-2)); 
			g.drawString(""+oldx+"", 70+i-2, 420); 
			g.setColor(Color.BLUE); 
		} 
		g.setColor(Color.RED); 
		g.drawString("Temperature", 10, 80); 
		g.drawString("Time", 550, 400); 
	} 
}

Somebody have ideas?

DrRakha

Hi Makaule,

Zooming mmm ? I have made zooming in java for images.I also added JSlider.But it was not for these purpose. Any way you can check the project. I think it will help you soo much because i contain zooming , jslider , and also scroll bars that interact with the zooming ,
at this link http://www.codemiles.com/viewtopic.php?f=101&t=162
remember it is a netBeans IDE project, if you don't have netBeans you can get it from the following link http://www.netbeans.org/

I add the JSlider and ChangeListener to the JPanel Class

Code:

 
 
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JTextField;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

/**
 *
 * @author mohamed
 */
public class myPanel extends JPanel implements ChangeListener{
    
    /** Creates a new instance of myPanel */
    
    private JButton randButton=new JButton("Draw");
    private JSlider brislide=new JSlider(0,255,128);
    private JTextField myText=new JTextField(3);
    private JLabel myLabel=new JLabel("Max  Temperature ");
    private int[] temparray=new int[]{7,10,25,50,30};
    private float[] timearray=new float[] {8.15f, 8.45f, 9.15f, 9.45f, 10.15f};
    private int oldy;
    public myPanel() {
        
        randButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

repaint();
            }
        });
        
     brislide.addChangeListener(this);
        add(randButton);     
 add(brislide);
    }
    
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        
        g.drawLine(10,300,10,200);
        g.drawLine(10,300,110,300);
        g.setColor(Color.BLUE);
        oldy=0;
        for(int i=0;i            g.drawLine(30+i-20,300-oldy,30+i,300-temparray[i/20]);
            oldy=temparray[i/20];
            g.setColor(Color.RED.brighter());
            g.drawOval(30+i-2,300-temparray[i/20]-2,4,4);
            g.setColor(Color.BLUE);
            
        }
        g.setColor(Color.RED);
        g.drawString("Temperature",10,100);
        g.drawString("Time  ",120,300);
    }

    public void stateChanged(ChangeEvent e) {
        /// Called when You change the Slider Value 
        System.out.println(brislide.getValue());
        // Do Your Zooming Process 
    }
    
}

Quote:

Download the Project from here

Attachment:

File comment: NetBeans XY-Curve Project

XYCurve.rar [11.72 KiB]
Downloaded 1198 times

Makaule

thanks I will check this

Makaule

msi_333, could you add in this program 3 radiobuttons? and how to use layout in jpanel?

DrRakha

Hi
Oh

,I think you have to go to books forum and download a book that help in Java GUI by SWING and then search for radio button and how to make it.I recommended the Thinking in Java book. I will try to make Radio button on JFrame code as soon as i can and post it here. If you have a specific problem in your code you can tell us about.

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