Notes: Weakly enforce a minimum allocated pacing time per slide

When using the totalTime-based pacing calculation, a presenter may
inadvertently set totalTime and per-slide data-timing attributes in
such a way that the pacing time for some slides is impossibly low or
even negative.

Add a check to ensure that the pacing on a slide never falls below a
configurable minimum, defaulting to 0. Display an alert if the
pacing for any slide(s) falls below the threshold.
main
Florian Haas 3 years ago
parent 078ba62050
commit 23c12d7332
  1. 7
      README.md
  2. 6
      plugin/notes/notes.html

@ -346,6 +346,13 @@ Reveal.initialize({
// instead of using the defaultTiming value
totalTime: 0,
// Specify the minimum amount of time you want to allot to
// each slide, if using the totalTime calculation method. If
// the automated time allocation causes slide pacing to fall
// below this threshold, then you will see an alert in the
// speaker notes window
minimumTimePerSlide: 0;
// Enable slide navigation via mouse wheel
mouseWheel: false,

@ -540,6 +540,7 @@
callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) {
callRevealApi( 'getConfig', [], function ( config ) {
var totalTime = config.totalTime;
var minTimePerSlide = config.minimumTimePerSlide || 0;
var defaultTiming = config.defaultTiming;
if ((defaultTiming == null) && (totalTime == null)) {
callback(null);
@ -574,6 +575,11 @@
// And now we replace every zero-value timing with that average
timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } );
}
var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length
if ( slidesUnderMinimum ) {
message = "The pacing time for " + slidesUnderMinimum + " slide(s) is under the configured minimum of " + minTimePerSlide + " seconds. Check the data-timing attribute on individual slides, or consider increasing the totalTime or minimumTimePerSlide configuration options (or removing some slides).";
alert(message);
}
callback( timings );
} );
} );

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