class RectButton extends Button
{
  RectButton(int ix, int iy, int isize, color icolor, color ihighlight) 
  {
    x = ix;
    y = iy;
    size = isize;
    basecolor = icolor;
    highlightcolor = ihighlight;
    currentcolor = basecolor;
    bordercolor = color(100);
  }
  
  boolean over() 
  {
    if( overRect(x, y, size, size) ) {
      over = true;
      return true;
    } else {
      over = false;
      return false;
    }
  }
  
  void display() 
  {
    stroke(bordercolor);
    fill(currentcolor);
    rect(x, y, size, size);
    if(im != null) {
      int xPad = round((size - im.width) / 2);
      int yPad = round((size - im.height) / 2);
      image(im, x+xPad, y+yPad);
    }
  }
}