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only transition properties that have changed

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This commit is contained in:
Hakim El Hattab 2020-02-27 08:45:19 +01:00
parent 1649bd0d98
commit 345ec01f19
1 changed files with 5 additions and 2 deletions
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7
js/reveal.js
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@ -3886,7 +3886,7 @@
unmatchedElement.dataset.autoAnimateTarget = 'unmatched';
} );
css.push( '[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: all '+ (animationOptions.duration*0.8) +'s ease '+ (animationOptions.duration*0.2) +'s; }' );
css.push( '[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity '+ (animationOptions.duration*0.8) +'s ease '+ (animationOptions.duration*0.2) +'s; }' );
}
// Setting the whole chunk of CSS at once is the most
@ -4016,15 +4016,18 @@
var css = '';
var toStyleProperties = Object.keys( toProps.styles );
// Only create animate this element IF at least one style
// property has changed
if( Object.keys( toProps.styles ).length > 0 ) {
if( toStyleProperties.length > 0 ) {
// Instantly move to the 'from' state
fromProps.styles['transition'] = 'none';
// Animate towards the 'to' state
toProps.styles['transition'] = 'all '+ options.duration +'s '+ options.easing + ' ' + options.delay + 's';
toProps.styles['transition-property'] = toStyleProperties.join( ', ' );
// Build up our custom CSS. We need to override inline styles
// so we need to make our styles vErY IMPORTANT!1!!