Button.java

package vooga.rts.gui;

import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.Observable;
import vooga.rts.IGameLoop;
import vooga.rts.resourcemanager.ResourceManager;
import util.Location;
import vooga.rts.util.Scale;


public abstract class Button extends Observable implements IGameLoop {

    private BufferedImage myImage;
    protected Dimension mySize;
    protected Location myPos;
    protected boolean isFocused;

    protected static final int S_X = (int) Window.D_X;
    protected static final int S_Y = (int) Window.D_Y;

    /*
     * TODO: Add onFocus behavior for each button.
     */

    public Button (String image, Dimension size, Location pos) {
        if (image != null) {
            myImage =
                    ResourceManager.getInstance().<BufferedImage> getFile(image,
                                                                          BufferedImage.class);
        }
        mySize = size;
        myPos = pos;
        isFocused = false;
    }

    public void setImage (BufferedImage i) {
        myImage = i;
    }

    @Override
    public abstract void update (double elapsedTime);

    @Override
    public void paint (Graphics2D pen) {
        if (myImage != null) {
            pen.drawImage(myImage, (int) myPos.x, (int) myPos.y, mySize.width, mySize.height, null);
        }
    }

    public abstract void processClick ();

    public abstract void processHover ();

    public boolean checkWithinBounds (int x, int y) {
        return (x > Scale.scaleX(myPos.x) && y > Scale.scaleY(myPos.y) &&
                x < (Scale.scaleX(myPos.x) + Scale.scaleX(mySize.width)) && y < (Scale
                .scaleY(myPos.y) + Scale.scaleY(mySize.height)));
    }

    public boolean checkWithinBounds (Location l) {
        return checkWithinBounds((int) l.getX(), (int) l.getY());
    }

    public Dimension getSize () {
        return mySize;
    }

    public void setSize (Dimension s) {
        mySize = s;
    }

    public Location getPos () {
        return myPos;
    }

    public void setPos (Location l) {
        myPos = l;
    }

    public void setFocused (boolean b) {
        isFocused = b;
    }

}