Displaying an image in a set location in an applet

[Jody Monahan]

Hi all,

I am having trouble displaying an image in a certain position in my Java applet. The AppletImagePanel class can correctly display an image in a seperate applet, however when I implemented this class along with my GUI, the image does not display. It should display at the bottom right hand side of the applet. Any feedback would be greatly appreciated.

import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import javax.swing.*;
import java.net.*;

public class fyp1 extends JApplet {
    
    Canvas canvas_2;
    JButton fuzz_button;
    JTextArea textarea_2;
    JScrollPane sp_textarea_2;
    JButton delay_button;
    JButton tremolo_button;
    JButton flanger_button;
    JButton vibrato_button;
    JButton button_8;
    JSlider slider1;
    JSlider slider2;
    JSlider slider3;
    JSlider slider4;
    JSlider slider5;
    JSlider slider6;
    JSlider slider7;
    JSlider slider8;
    JSlider slider9;
    JSlider slider10;
    JSlider slider11;
    JSlider slider12;    
    
    JScrollPane scrollpane_4;
    JScrollPane scrollpane_5;
    JScrollPane scrollpane_6;
    JScrollPane scrollpane_7;
    JScrollPane scrollpane_8;
    JScrollPane scrollpane_9;
    JScrollPane scrollpane_10;
    JScrollPane scrollpane_11;
    JScrollPane scrollpane_12;
    JScrollPane scrollpane_13;
    JScrollPane scrollpane_14;
    JScrollPane scrollpane_15;
    JLabel label_1;
    JLabel label_2;
    JLabel label_3;
    JLabel label_4;
    JLabel label_5;
    JLabel label_6;
    JLabel label_7;
    JLabel label_8;
    JLabel label_9;
    JLabel label_10;
    JLabel label_11;
    JLabel label_12;
    JLabel label_13;
    JLabel label_14;
    JLabel label_15;
    
    JScrollPane scrollPane = new JScrollPane();    

    public void init() {
    	
    	// this line is new from the image stuff
    	scrollPane.add(new AppletImagePanel());
    	
        fypLayout customLayout = new fypLayout();

        getContentPane().setFont(new Font("Helvetica", Font.PLAIN, 12));
        getContentPane().setLayout(customLayout);

        label_1 = new JLabel("Welcome to the Guitar Effects Applet");
        getContentPane().add(label_1);

        canvas_2 = new Canvas();
        getContentPane().add(canvas_2);

        fuzz_button = new JButton("Fuzz");
        getContentPane().add(fuzz_button);

        textarea_2 = new JTextArea("Text area will display info about the effect");
        sp_textarea_2 = new JScrollPane(textarea_2);
        getContentPane().add(sp_textarea_2);

        delay_button = new JButton("Delay");
        getContentPane().add(delay_button);

        tremolo_button = new JButton("Tremolo");
        getContentPane().add(tremolo_button);

        flanger_button = new JButton("Flanger");
        getContentPane().add(flanger_button);

        vibrato_button = new JButton("Vibrato");
        getContentPane().add(vibrato_button);

        button_8 = new JButton("Wah-Wah");
        getContentPane().add(button_8);

        label_3 = new JLabel("Please select a guitar effect:");
        getContentPane().add(label_3);

        slider1 = new JSlider();
        getContentPane().add(slider1);
        
        slider2 = new JSlider();
        getContentPane().add(slider2);
        
        slider3 = new JSlider();
        getContentPane().add(slider3);
        
        slider4 = new JSlider();
        getContentPane().add(slider4);
        
        slider5 = new JSlider();
        getContentPane().add(slider5);
        
        slider6 = new JSlider();
        getContentPane().add(slider6);
        
        slider7 = new JSlider();
        getContentPane().add(slider7);
        
        slider8 = new JSlider();
        getContentPane().add(slider8);
        
        slider9 = new JSlider();
        getContentPane().add(slider9);
        
        slider10 = new JSlider();
        getContentPane().add(slider10);
        
        slider11 = new JSlider();
        getContentPane().add(slider11);
        
        slider12 = new JSlider();
        getContentPane().add(slider12);

        label_4 = new JLabel("Clipping Threshold");
        getContentPane().add(label_4);

        label_5 = new JLabel("Style");
        getContentPane().add(label_5);

        label_6 = new JLabel("Level Boost");
        getContentPane().add(label_6);

        label_7 = new JLabel("Depth");
        getContentPane().add(label_7);

        label_8 = new JLabel("label_8");
        getContentPane().add(label_8);

        label_9 = new JLabel("label_9");
        getContentPane().add(label_9);

        label_10 = new JLabel("label_10");
        getContentPane().add(label_10);

        label_11 = new JLabel("label_11");
        getContentPane().add(label_11);

        label_12 = new JLabel("label_12");
        getContentPane().add(label_12);

        label_13 = new JLabel("label_13");
        getContentPane().add(label_13);

        label_14 = new JLabel("label_14");
        getContentPane().add(label_14);

        label_15 = new JLabel("label_15");
        getContentPane().add(label_15);

        scrollPane = new JScrollPane();
        //getContentPane().add(scrollPane);
        JPanel panel = new JPanel();
        panel.add(scrollPane);
        getContentPane().add(panel);
        //setLayout(new BorderLayout());
        //add(panel);

        setSize(getPreferredSize());
    }

    public static void main(String args[]) {
        fyp1 applet = new fyp1();
        JFrame window = new JFrame("fyp1");

        window.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        
        window.add(applet);
        applet.init();
        applet.start();
        window.getContentPane().add("Center", applet);
        window.pack();
        window.setVisible(true);        
    }
}

class AppletImagePanel extends Panel
{
    Image image;
 
    public AppletImagePanel()
    {
        loadImage();
    }
 
    public void paint(Graphics g)
    {
        super.paint(g);
        int w = getWidth();
        int h = getHeight();
        int imageWidth = image.getWidth(this);
        int imageHeight = image.getHeight(this);
        int x = (w - imageWidth)/2;
        int y = (h - imageHeight)/2;
        g.drawImage(image, x, y, this);
    }
 
    public Dimension getPreferredSize()
    {
        return new Dimension(image.getWidth(this), image.getHeight(this));
    }
 
    private void loadImage()
    {
        String fileName = "bd.jpg";
        MediaTracker tracker = new MediaTracker(this);
        URL url = getClass().getResource(fileName);
        image = Toolkit.getDefaultToolkit().getImage(url);
        tracker.addImage(image, 0);
        try
        {
            tracker.waitForID(0);
        }
        catch(InterruptedException ie)
        {
            System.err.println("interrupt: " + ie.getMessage());
        }
    }
}

class fypLayout implements LayoutManager {

    public fypLayout() {
    }

    public void addLayoutComponent(String name, Component comp) {
    }

    public void removeLayoutComponent(Component comp) {
    }

    public Dimension preferredLayoutSize(Container parent) {
        Dimension dim = new Dimension(0, 0);

        Insets insets = parent.getInsets();
        dim.width = 713 + insets.left + insets.right;
        dim.height = 579 + insets.top + insets.bottom;

        return dim;
    }

    public Dimension minimumLayoutSize(Container parent) {
        Dimension dim = new Dimension(0, 0);
        return dim;
    }

    public void layoutContainer(Container parent) {
        Insets insets = parent.getInsets();

        Component c;
        c = parent.getComponent(0);
        if (c.isVisible()) {c.setBounds(insets.left+176,insets.top+0,328,32);}
        c = parent.getComponent(1);
        if (c.isVisible()) {c.setBounds(insets.left+176,insets.top+48,328,168);}
        c = parent.getComponent(2);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+264,72,24);}
        c = parent.getComponent(3);
        if (c.isVisible()) {c.setBounds(insets.left+88,insets.top+472,264,96);}
        c = parent.getComponent(4);
        if (c.isVisible()) {c.setBounds(insets.left+144,insets.top+264,72,24);}
        c = parent.getComponent(5);
        if (c.isVisible()) {c.setBounds(insets.left+264,insets.top+264,72,24);}
        c = parent.getComponent(6);
        if (c.isVisible()) {c.setBounds(insets.left+392,insets.top+264,72,24);}
        c = parent.getComponent(7);
        if (c.isVisible()) {c.setBounds(insets.left+512,insets.top+264,72,24);}
        c = parent.getComponent(8);
        if (c.isVisible()) {c.setBounds(insets.left+624,insets.top+264,72,24);}
        c = parent.getComponent(9);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+232,160,24);}
        c = parent.getComponent(10);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+312,72,24);}
        c = parent.getComponent(11);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+360,72,24);}
        c = parent.getComponent(12);
        if (c.isVisible()) {c.setBounds(insets.left+144,insets.top+312,72,24);}
        c = parent.getComponent(13);
        if (c.isVisible()) {c.setBounds(insets.left+144,insets.top+360,72,24);}
        c = parent.getComponent(14);
        if (c.isVisible()) {c.setBounds(insets.left+264,insets.top+312,72,24);}
        c = parent.getComponent(15);
        if (c.isVisible()) {c.setBounds(insets.left+264,insets.top+360,72,24);}
        c = parent.getComponent(16);
        if (c.isVisible()) {c.setBounds(insets.left+392,insets.top+312,72,24);}
        c = parent.getComponent(17);
        if (c.isVisible()) {c.setBounds(insets.left+392,insets.top+360,72,24);}
        c = parent.getComponent(18);
        if (c.isVisible()) {c.setBounds(insets.left+512,insets.top+312,72,24);}
        c = parent.getComponent(19);
        if (c.isVisible()) {c.setBounds(insets.left+512,insets.top+360,72,24);}
        c = parent.getComponent(20);
        if (c.isVisible()) {c.setBounds(insets.left+624,insets.top+312,72,24);}
        c = parent.getComponent(21);
        if (c.isVisible()) {c.setBounds(insets.left+624,insets.top+360,72,24);}
        c = parent.getComponent(22);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+288,72,24);}
        c = parent.getComponent(23);
        if (c.isVisible()) {c.setBounds(insets.left+144,insets.top+288,72,24);}
        c = parent.getComponent(24);
        if (c.isVisible()) {c.setBounds(insets.left+32,insets.top+336,72,24);}
        c = parent.getComponent(25);
        if (c.isVisible()) {c.setBounds(insets.left+144,insets.top+336,72,24);}
        c = parent.getComponent(26);
        if (c.isVisible()) {c.setBounds(insets.left+264,insets.top+336,72,24);}
        c = parent.getComponent(27);
        if (c.isVisible()) {c.setBounds(insets.left+264,insets.top+288,72,24);}
        c = parent.getComponent(28);
        if (c.isVisible()) {c.setBounds(insets.left+624,insets.top+336,72,24);}
        c = parent.getComponent(29);
        if (c.isVisible()) {c.setBounds(insets.left+624,insets.top+288,72,24);}
        c = parent.getComponent(30);
        if (c.isVisible()) {c.setBounds(insets.left+512,insets.top+336,72,24);}
        c = parent.getComponent(31);
        if (c.isVisible()) {c.setBounds(insets.left+512,insets.top+288,72,24);}
        c = parent.getComponent(32);
        if (c.isVisible()) {c.setBounds(insets.left+392,insets.top+336,72,24);}
        c = parent.getComponent(33);
        if (c.isVisible()) {c.setBounds(insets.left+392,insets.top+288,72,24);}
        c = parent.getComponent(34);
        if (c.isVisible()) {c.setBounds(insets.left+400,insets.top+472,168,88);}
    }
}

Kind regards,
mono627

[Ulf Dittmer]

Nothing really applet-specific, let's move it to the Swing/GUI forum.