SLIDER

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class MyWorld here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class SliderBar extends World
{
    
    protected HoSlider hoSlider;
    protected VeSlider veSlider;
    
    public SliderBar()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(900, 600, 1);
        hoSlider = new HoSlider(0, 1000);
        veSlider = new VeSlider(1000, 0);
        addSliderBars();
        
    }
    
    public final void addSliderBars() 
    {
        addObject(hoSlider, getWidth()/2, getHeight() - 30);
        addObject(veSlider, getWidth() - 30, getHeight()/2);
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class Slider here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Slider extends Menu
{
    public static final int MIN_X = -82;
    public static final int MAX_X = 81;
    public static final double RANGE_X = MAX_X - MIN_X;
    
    public static final int MIN_Y = -82;
    public static final int MAX_Y = 81;
    public static final double RANGE_Y = MAX_Y - MIN_Y;
    
    public int getMinX()
    {
        return getX() + MIN_X;
    }
    
    public int getMaxX()
    {
        return getX() + MAX_X;
    }
    
    public int getMinY()
    {
        return getY() + MIN_Y;
    }
    
    public int getMaxY()
    {
        return getY() + MAX_Y;
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class HoSlider here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class HoSlider extends Slider
{
    private SliderHand hand;
    
    private boolean enabled;
    
    private int min;
    private int max;
        
    public HoSlider()
    {
        this(0, 100);
    }
    
    public HoSlider(int min, int max)
    {
        this.min = min;
        this.max = max;
        //range = max - min;
        enabled = true;
        //val = (int) ((double) range/2);
        setImage(new GreenfootImage("slider-base.png"));
    }
    
    public void addedToWorld(World world)
    {
        hand = new SliderHand();
        getWorld().addObject(hand, getX(), getY());
    }
    
    class SliderHand extends Menu
    {
        public SliderHand()
        {
            setImage("slider-hand.png");
        }
        
        public void act()
        {
            if (enabled && Greenfoot.mouseDragged(this))
            {
                int oldX = getX();
                
                MouseInfo mouse = Greenfoot.getMouseInfo();
                int x = mouse.getX();
                
                if (x < getMinX())
                    x = getMinX();
                    
                if (x > getMaxX())
                    x = getMaxX();
                    
                if (x != oldX)
                {
                    setLocation(x, getY());
                    //setValueFromX(x);
                }
            }
        }
        
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class VeSlider here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class VeSlider extends Slider
{
    private SliderHand hand;
    
    private boolean enabled;
    
    private int min;
    private int max;
    
    public VeSlider()
    {
        this(0, 100);
    }
    
    public VeSlider(int min, int max) 
    {
        this.min = min;
        this.max = max;
        enabled = true;
        setImage(new GreenfootImage("slider-base.png"));
        setRotation(270);
    }
    
    public void addesToWorld(World world)
    {
        hand = new SliderHand();
        getWorld().addObject(hand, getX() + 4, getY());
    }
    
    class SliderHand extends Menu
    {
        public SliderHand()
        {
            setImage("slider-hand.png");
            setRotation(90);
        }
        
        public void act()
        {
            if (enabled && Greenfoot.mouseDragged(this))
            {
                int oldY = getY();
                
                MouseInfo mouse = Greenfoot.getMouseInfo();
                int y = mouse.getY();
                
                if (y < getMinY())
                    y = getMinY();
                
                if (y > getMaxY())
                    y = getMaxY();
                    
                if (y != oldY)
                {
                    setLocation(getX(), y);                    
                }
            }
        }
        
    }
}