I'm using now the widget.ButtonOpts.Graphic(img) which allows to set an image to the BTN without using Stacked.

I would like to have the same logic I did on #184 but also adding Pressed.

So which is the best route? I was thinking on adding a new widget.ButtonOpts.GraphicImages(imgs) that would basically use the same API I did for the other PR. That is easy, the issues is when trying to do the Pressed as the Widget has no knowledge of it, should we also add a Widget.Pressed same way we have Widget.Disabled?

If not the other way is to copy part of the logic on TextAndImage that has:

type ButtonImageImage struct {
	Idle     *ebiten.Image
	Disabled *ebiten.Image
}

We could add the Pressed and on Render extend the logic already existent to use either Idle or Disabled to check the b.pressed (and the other check done on other methods) to change the image of the Graphic to the one we want.

WDYT is the one you prefer?