tree f546d84e138c2970e7c1d854dda7c46c292a4dad
parent ad0f24bb7c325da6960db16306fd19c536b80230
author Marc Kupietz <kupietz@ids-mannheim.de> 1787552553 +0300
committer Marc Kupietz <kupietz@ids-mannheim.de> 1787552553 +0300

ids theme: speaker notes overlay button for touch devices

The reveal.js speaker view ('s') opens a separate window, which is
awkward on mobile browsers. Add a button next to the fullscreen toggle
(shown on coarse-pointer devices only, like the fullscreen button) that
covers the slide with a full-screen overlay showing the current slide's
speaker notes, its title and planned time (from data-timing). The
overlay follows slide changes while open, closes with the X button or
Escape, is hidden in print output, and the button only appears when the
deck contains notes at all.

Change-Id: I50c6cd701115a973e8c6ba35448b13d5c722ab5a