ScalableButton

public class ScalableButton extends Image {

    public ScalableButton(TextureRegion t) {
        super(t);
        setOrigin(getWidth() / 2, getHeight() / 2);
    }
    public ScalableButton(Texture t) {
        super(t);
        setOrigin(getWidth() / 2, getHeight() / 2);
    }

    public boolean addMyListener(final RunnableAction clickAction) {
        EventListener clickListener = new InputListener() {
            @Override
            public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
                MusicHandler.playClick();
                addAction(Actions.scaleTo(0.8f, 0.8f, 0.03f, Interpolation.fade));
                return true;
            }

            @Override
            public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
                clearActions();
                addAction(Actions.scaleTo(1,1, 0.05f, Interpolation.fade));
                clickAction.run();
                super.touchUp(event, x, y, pointer, button);
            }
        };
        return super.addListener(clickListener);
    }

}