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only carry forward fragment visibiltiy if style remains unchanged

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This commit is contained in:
Hakim El Hattab 2020-03-19 16:27:42 +01:00
parent 4d1cb43faf
commit 34ab7ded55
3 changed files with 17 additions and 4 deletions
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2
dist/reveal.min.js vendored
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File diff suppressed because one or more lines are too long

12
js/controllers/autoanimate.js
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@ -1,4 +1,5 @@
import { queryAll, extend, createStyleSheet } from '../utils/util.js'
import { FRAGMENT_STYLE_REGEX } from '../utils/constants.js'
/**
* Automatically animates matching elements across
@ -168,12 +169,21 @@ export default class AutoAnimate {
// conflicts with fragment animations
delete toProps.styles['opacity'];
if( from.classList.contains( 'fragment' ) && animationOptions.slideDirection === 'forward' ) {
if( from.classList.contains( 'fragment' ) ) {
let fromFragmentStyle = ( from.className.match( FRAGMENT_STYLE_REGEX ) || [''] )[0];
let toFragmentStyle = ( to.className.match( FRAGMENT_STYLE_REGEX ) || [''] )[0];
// Only skip the fragment if the fragment animation style
// remains unchanged
if( fromFragmentStyle === toFragmentStyle && animationOptions.slideDirection === 'forward' ) {
to.classList.add( 'visible', 'disabled' );
}
}
}
// If translation and/or scaling are enabled, css transform
// the 'to' element so that it matches the position and size
// of the 'from' element

3
js/utils/constants.js
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@ -5,3 +5,6 @@ export const VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section';
// Methods that may not be invoked via the postMessage API
export const POST_MESSAGE_METHOD_BLACKLIST = /registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener/;
// Regex for retrieving the fragment style from a class attribute
export const FRAGMENT_STYLE_REGEX = /fade-(down|up|right|left|out|in-then-out|in-then-semi-out)|semi-fade-out|current-visible|shrink|grow/;