http://www.chrisnorstrom.com/2012/11/invention-multiple-choice-windowed-slider-ui/ http://www.chrisnorstrom.com/2012/11/invention-multiple-choi... posted on HN

http://www.chrisnorstrom.com/2012/11/invention-multiple-choice-windowed-slider-ui/ http://www.chrisnorstrom.com/2012/11/invention-multiple-choi... posted on HN a while ago as https://news.ycombinator.com/item?id=4742535 https://news.ycombinator.com/item?id=4742535 explained a solution to this (or a very similar problem). But a simpler solution is just to use proper shading to make the selected button look depressed, by analogy with physical buttons.