COLOR PALATTE USING APPLET

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

public class ColorChooserApplet extends Applet implements AdjustmentListener

{

private float[]hsb=new float[3];

private int r=0,g=0,b=0;

private Scrollbar hueScroll,brightnessScroll,saturationScroll,blueScroll,redScroll,greenScroll;

private Label hueLabel,brightnessLabel,saturationLabel,redLabel,greenLabel,blueLabel;

private Canvas colorCanvas;

public void init()

{

Color.RGBtoHSB(0,0,0,hsb);

hueScroll=new Scrollbar(Scrollbar.HORIZONTAL,(int)(255*hsb[0]),10,0,265);

saturationScroll=new Scrollbar(Scrollbar.HORIZONTAL,(int)(255*hsb[1]),10,0,265);

brightnessScroll=new Scrollbar(Scrollbar.HORIZONTAL,(int)(255*hsb[2]),10,0,265);

redScroll=new Scrollbar(Scrollbar.HORIZONTAL,0,10,0,265);

greenScroll=new Scrollbar(Scrollbar.HORIZONTAL,0,10,0,265);

blueScroll=new Scrollbar(Scrollbar.HORIZONTAL,0,10,0,265);

hueLabel=new Label("H="+hsb[0]);

saturationLabel=new Label("S="+hsb[1]);

brightnessLabel=new Label("B="+hsb[2]);

redLabel=new Label("R=0");

greenLabel=new Label("G=0");

blueLabel=new Label("B=0");

hueScroll.setBackground(Color.lightGray);

saturationScroll.setBackground(Color.lightGray);

brightnessScroll.setBackground(Color.lightGray);

redScroll.setBackground(Color.lightGray);

greenScroll.setBackground(Color.lightGray);

blueScroll.setBackground(Color.lightGray);

hueLabel.setBackground(Color.white);

saturationLabel.setBackground(Color.white);

brightnessLabel.setBackground(Color.white);

redLabel.setBackground(Color.white);

greenLabel.setBackground(Color.white);

blueLabel.setBackground(Color.white);

hueScroll.addAdjustmentListener(this);

saturationScroll.addAdjustmentListener(this);

brightnessScroll.addAdjustmentListener(this);

redScroll.addAdjustmentListener(this);

greenScroll.addAdjustmentListener(this);

blueScroll.addAdjustmentListener(this);

colorCanvas=new Canvas();

colorCanvas.setBackground(Color.black);

setLayout(new GridLayout(1,3,3,3));

setBackground(Color.gray);

Panel scrolls=new Panel();

Panel Labels=new Panel();

add(scrolls);

add(Labels);

add(colorCanvas);

scrolls.setLayout(new GridLayout(6,1,2,2));

scrolls.add(redScroll);

scrolls.add(greenScroll);

scrolls.add(blueScroll);

scrolls.add(saturationScroll);

scrolls.add(brightnessScroll);

Labels.setLayout(new GridLayout(6,1,2,2));

Labels.add(redLabel);

Labels.add(greenLabel);

Labels.add(blueLabel);

Labels.add(hueLabel);

Labels.add(saturationLabel);

Labels.add(brightnessLabel);

}

public void adjustmentValueChanged(AdjustmentEvent eve)

{

int r1,g1,b1;

r1=redScroll.getValue();

g1=greenScroll.getValue();

b1=blueScroll.getValue();

if(r!=r1||g!=g1||b!=b1)

{

r=r1;

g=g1;

b=b1;

Color.RGBtoHSB(r,g,b,hsb);

}

else

{

hsb[0]=hueScroll.getValue()/255.0F;

hsb[1]=saturationScroll.getValue()/255.0F;

hsb[2]=brightnessScroll.getValue()/255.0F;

int rgb=Color.HSBtoRGB(hsb[0],hsb[1],hsb[2]);

r=(rgb>>16)&0xFF;

g=(rgb>>8)&0xFF;

b=rgb&0xFF;

}

redLabel.setText("R="+r);

greenLabel.setText("G="+g);

blueLabel.setText("B="+b);

hueLabel.setText("H="+hsb[0]);

saturationLabel.setText("S="+hsb[1]);

blueLabel.setText("B="+hsb[2]);

redScroll.setValue(r);

greenScroll.setValue(g);

blueScroll.setValue(b);

hueScroll.setValue((int)(255*hsb[0]));

saturationScroll.setValue((int)(255*hsb[1]));

brightnessScroll.setValue((int)(255*hsb[2]));

colorCanvas.setBackground(new Color(r,g,b));

colorCanvas.repaint();

}

public Insets getInsets()

{

return new Insets(3,3,3,3);

}

}

embed.html

/* To run:

*javac ColorChooserApplet.java

*appletviewer embed.html

*/

COLOR PALATTE WITH MATRIX OF BUTTONS

package ish;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

public class ColorChooserTest

{

public static void main(String[] args)

{

ColorChooserFrame frame=new ColorChooserFrame();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.show();

}

}

class ColorChooserFrame extends JFrame

{

public ColorChooserFrame()

{

setTitle("ColorChooserTest");

setSize(WIDTH,HEIGHT);

ColorChooserPanel panel=new ColorChooserPanel();

Container contentPane=getContentPane();

contentPane.add(panel);

}

public static final int WIDTH=300;

public static final int HEIGHT=200;

}

class ColorChooserPanel extends JPanel

{

public ColorChooserPanel()

{

JButton modalButton=new JButton("Modal");

modalButton.addActionListener(new ModalListener());

add(modalButton);

JButton modalessButton=new JButton("Modaless");

modalessButton.addActionListener(new ModelessListener());

add(modalessButton);

JButton immediateButton=new JButton("Immediate");

immediateButton.addActionListener(new ImmediateListener());

add(immediateButton);

}

private class ModalListener implements ActionListener

{

public void actionPerformed(ActionEvent event)

{

Color defaultColor=getBackground();

Color Selected=JColorChooser.showDialog(ColorChooserPanel.this,"set background",

defaultColor);

setBackground(Selected);

}

}

private class ModelessListener implements ActionListener

{

public ModelessListener()

{

chooser=new JColorChooser();

dialog=JColorChooser.createDialog(ColorChooserPanel.this,"Backgroundcolor",false,chooser,new ActionListener()

{

public void actionPerformed(ActionEvent event)

{

setBackground(chooser.getColor());

}

},null);

}

public void actionPerformed(ActionEvent event)

{

chooser.setColor(getBackground());

dialog.show();

}

private JDialog dialog;

private JColorChooser chooser;

}

private class ImmediateListener implements ActionListener

{

public ImmediateListener()

{

chooser=new JColorChooser();

chooser.getSelectionModel().addChangeListener(new ChangeListener()

{

public void stateChanged(ChangeEvent event)

{

setBackground(chooser.getColor());

}

});

dialog=new JDialog((Frame)null,false);

dialog.getContentPane().add(chooser);

dialog.pack();

}

public void actionPerformed(ActionEvent event)

{

chooser.setColor(getBackground());

dialog.show();

}

private JDialog dialog;

private JColorChooser chooser;

}

}

COLOR PALETTE

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

public class ColorPalette extends Applet implements ActionListener, ItemListener

{

Button btnRed, btnGreen, btnBlue;

String str = "";

CheckboxGroup cbgColor;

CheckboxGroup cbgImage;

Checkbox optFore, optBack;

Checkbox optMb, optWsb;

Image imgMb, imgWsb;

TextArea txtaComments = new TextArea("", 5, 30);

public void init() {

setLayout(new GridLayout(4, 3));

cbgColor = new CheckboxGroup();

cbgImage = new CheckboxGroup();

Label lblColor = new Label("Select the Area :") ;

Label lblImage = new Label("Select the Image :") ;

optFore = new Checkbox("Foreground", cbgColor,true);

optBack = new Checkbox("Background", cbgColor,false);

optMb = new Checkbox("REC-Main Block", cbgImage,true);

optWsb = new Checkbox("REC-Workshop Block",cbgImage, false);

btnRed = new Button("Red");

btnGreen = new Button("Green");

btnBlue = new Button("Blue");

//BB / REC - 17

imgMb = getImage(getDocumentBase(),getParameter("fidal"));

imgWsb = getImage(getDocumentBase(),getParameter("castro"));

add(btnRed);

add(btnGreen);

add(btnBlue);

add(lblColor);

add(optFore);

add(optBack);

add(lblImage);

add(optMb);

add(optWsb);

add(txtaComments);

optFore.addItemListener(this);

optBack.addItemListener(this);

optMb.addItemListener(this);

optWsb.addItemListener(this);

btnRed.addActionListener(this);

btnGreen.addActionListener(this);

btnBlue.addActionListener(this);

}

public void actionPerformed(ActionEvent ae) {

str = cbgColor.getSelectedCheckbox().getLabel() ;

if(ae.getSource() == btnRed &&

str.equals("Background")) {

txtaComments.setBackground(Color.red);

}

if(ae.getSource() == btnRed &&

str.equals("Foreground")) {

txtaComments.setForeground(Color.red);

}

if(ae.getSource() == btnGreen &&

str.equals("Background")) {

txtaComments.setBackground(Color.green);

}

if(ae.getSource() == btnGreen &&

str.equals("Foreground")) {

txtaComments.setForeground(Color.green);

}

if(ae.getSource() == btnBlue &&

str.equals("Background")) {

txtaComments.setBackground(Color.blue);

}

//BB / REC - 18

if(ae.getSource() == btnBlue &&

str.equals("Foreground")) {

txtaComments.setForeground(Color.blue);

}

}

public void itemStateChanged(ItemEvent ie) {

repaint();

}

public void paint(Graphics g) {

if(optMb.getState() == true)

g.drawImage(imgMb, 200, 400, this) ;

if(optWsb.getState() == true)

g.drawImage(imgWsb, 200, 400, this) ;

}

}