source: java-rpg-client/gamegui/ScrollBar.java

package gamegui;

import java.awt.*;
import java.awt.event.*;

public class ScrollBar extends Member {
        int size;
        int position;
        int scrollSpeed;
        
        public ScrollBar(String newName, int newX, int newY, int newWidth, int newHeight, int newScrollSpeed) {
                super(newName, newX, newY, newWidth, newHeight);
                
                size = 0;
                position = 0;
                scrollSpeed = newScrollSpeed;
        }
        
        public void clear() {
                size = 0;
                position = 0;
        }
        
        public boolean handleEvent(MouseEvent e) {
                if(!(getX() < e.getX() && e.getX() < getX()+getWidth() && getY() < e.getY() && e.getY() < getY()+getHeight()))
                        return false;
                else
                        return true;
        }
        
        public void draw(Graphics g) {
                g.setColor(Color.black);
        g.fillRect(getX(), getY(), getWidth(), getHeight());
        
        g.setColor(Color.red);
                g.drawRect(getX(), getY(), getWidth(), getHeight());
                
                g.drawLine(getX(), getY()+getWidth(), getX()+getWidth(), getY()+getWidth());
                g.drawLine(getX(), getY()+getHeight()-getWidth(), getX()+getWidth(), getY()+getHeight()-getWidth());
        
                g.drawLine(getX(), getY()+getWidth()+position, getX()+getWidth(), getY()+getWidth()+position);
                g.drawLine(getX(), getY()+getWidth()+position+size, getX()+getWidth(), getY()+getWidth()+position+size);
                
                g.drawLine(getX()+getWidth()*3/20, getY()+getWidth()*17/20, getX()+getWidth()*17/20, getY()+getWidth()*17/20);
                g.drawLine(getX()+getWidth()*17/20, getY()+getWidth()*17/20, getX()+getWidth()/2, getY()+getWidth()*3/20);
                g.drawLine(getX()+getWidth()/2, getY()+getWidth()*3/20, getX()+getWidth()*3/20, getY()+getWidth()*17/20);
                
                g.drawLine(getX()+getWidth()*3/20, getY()+getHeight()-getWidth()*17/20, getX()+getWidth()*17/20, getY()+getHeight()-getWidth()*17/20);
                g.drawLine(getX()+getWidth()*17/20, getY()+getHeight()-getWidth()*17/20, getX()+getWidth()/2, getY()+getHeight()-getWidth()*3/20);
                g.drawLine(getX()+getWidth()/2, getY()+getHeight()-getWidth()*3/20, getX()+getWidth()*3/20, getY()+getHeight()-getWidth()*17/20);
        }

        public int getPosition() {
                return position;
        }

        public int getScrollSpeed() {
                return scrollSpeed;
        }

        public int getSize() {
                return size;
        }
        
        public int getMaxSize() {
                return getHeight()-2*getWidth();
        }

        public void setPosition(int position) {
                this.position = position;
        }
        
        public void setSize(int size) {
                this.size = size;
        }
}