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.
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@ -346,6 +346,13 @@ Reveal.initialize({
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// instead of using the defaultTiming value
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totalTime: 0,
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// Specify the minimum amount of time you want to allot to
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// each slide, if using the totalTime calculation method. If
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// the automated time allocation causes slide pacing to fall
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// below this threshold, then you will see an alert in the
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// speaker notes window
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minimumTimePerSlide: 0;
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// Enable slide navigation via mouse wheel
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mouseWheel: false,
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@ -540,6 +540,7 @@
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callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) {
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callRevealApi( 'getConfig', [], function ( config ) {
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var totalTime = config.totalTime;
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var minTimePerSlide = config.minimumTimePerSlide || 0;
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var defaultTiming = config.defaultTiming;
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if ((defaultTiming == null) && (totalTime == null)) {
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callback(null);
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@ -574,6 +575,11 @@
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// And now we replace every zero-value timing with that average
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timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } );
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}
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var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length
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if ( slidesUnderMinimum ) {
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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).";
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alert(message);
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}
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callback( timings );
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} );
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} );
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