//  Applet:  ColorPicker.java
//  Author:  Ken Rawlings

import java.awt.*;
import java.applet.Applet;
import java.lang.Integer;

public class ColorPicker extends Applet {
        ColorPanel out;
        ColorChooser select;
                
        public void init() {
                setLayout(new BorderLayout());
                
                out = new ColorPanel();
		select = new ColorChooser(out, 255, 204, 102);
                add("West", select);
                add("Center", out);
        }
}

class ColorPanel extends Panel {
        Panel disp;
        
        ColorPanel() {
                setLayout(new BorderLayout());
                disp = new Panel();
                add("Center", disp);
        }
        
        public Insets insets() {
                return new Insets(1, 1, 1, 1);
        }
        
        public Dimension minimumSize() {
                return new Dimension(100, 100);
        }
        
        public void paint(Graphics g) {
                Rectangle rect = bounds();
                super.paint(g);
                g.drawRect(0, 0, rect.width-1, rect.height-1);
        }
        
        void change(Color new_c) {
                disp.setBackground(new_c);
                disp.repaint();
        }
}

class ColorChooser extends Panel {
        ColorPanel controller;
        Label html;
        RGBChooser red, green, blue;
        
        public Insets insets() {
                return new Insets(1, 1, 1, 0);
        }
        
        public void paint(Graphics g) {
                Rectangle rect = bounds();
                
                super.paint(g);
                g.draw3DRect(0, 0, rect.width-1, rect.height-1, true);
        }
        
        public Dimension preferredSize() {
                return new Dimension(75, 200);
        }
        
        ColorChooser(ColorPanel myController, int r, int g, int b) {
                super();
                
                controller = myController;
                setLayout(new BorderLayout());
                
                Panel controls = new Panel();
                controls.setLayout(new GridLayout(3, 1));
                red = new RGBChooser(this, r, "Red");
                controls.add(red);
                green = new RGBChooser(this, g, "Green");
                controls.add(green);
                blue = new RGBChooser(this, b, "Blue");
                controls.add(blue);
                add("Center", controls);
                html = new Label("#000000");
                html.setBackground(Color.gray);
                add("South", html);
                
                colorChange();
        }
        
        void colorChange() {
                Color new_c = getColor();
                int col[] = new int[3];
                StringBuffer text;
        
                text = new StringBuffer("");
                col[0] = new_c.getRed();
                col[1] = new_c.getGreen();
                col[2] = new_c.getBlue();
        
                for (int i = 0; i < 3; i++) {
                        if (col[i] < 16)
                                text.append('0');
                        text.append(Integer.toString(col[i], 16));
                }
        
                controller.change(new_c);
                html.setText("#" + text.toString());
        }
        
        Color getColor() {
//                System.out.println("Color Change");
                return new Color(red.value(), green.value(), blue.value());
        }
}

class InputPanel extends Panel {
        public Insets insets() {
                return new Insets(0, 3, 0, 3);
        }
}

class RGBChooser extends Panel {
        ColorChooser controller;
        Scrollbar colorScroll;
        TextField colorField;
        int c_value;
        
        public Insets insets() {
                return new Insets(1, 1, 2, 0);
        }
        
        public void paint(Graphics g) {
                Rectangle rect = bounds();
//                g.drawLine(rect.x, rect.y, rect.height, rect.width);
//                super.paint(g);
        }
        
        public boolean handleEvent(Event evt) {
                Integer in;
                
                if (evt.target == colorScroll) {
                        in = (Integer) evt.arg;
                        set_value(255 - in.intValue());
                        controller.colorChange();
                        
                        return true;
                }
                else if (evt.target == colorField) {
                        String tmp;
			tmp = (String) evt.arg;
                        in = Integer.valueOf(tmp);
                        set_value(in.intValue());
                        colorScroll.setValue(-1 * (in.intValue() - 255));
                        controller.colorChange();
                        return true;
                }
                else {
                        System.out.println("!Handled: " + evt);
                        return super.handleEvent(evt);
                }
        }
        
        RGBChooser(ColorChooser myController, int initial, String caption) {
                super();
                controller = myController;
                
                colorField = new TextField();
                colorScroll =
                    new Scrollbar(Scrollbar.VERTICAL, initial, 0, 0, 255);
                set_value(255-initial);
                add("East", colorScroll);
                
                InputPanel temp = new InputPanel();
                temp.setLayout(new GridLayout(3, 1));
                Label label1 = new Label(caption); // , Label.LEFT);
                temp.add(label1);
                temp.add(colorField);
                add("Center", temp);
        }
        
        int value() {
                return c_value;
        }
        
        void set_value(int initial) {
                colorField.setText(String.valueOf(initial));
                c_value = initial;
        }
}