fix auto-animatie transform origin + refactoring
This commit is contained in:
Hakim El Hattab
parent
4802a2b7f4
commit
e5ba80478d
2 changed files with 63 additions and 62 deletions
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@ -931,14 +931,6 @@ body {
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transform: none;
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transition: none; }
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/*********************************************
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* AUTO ANIMATE
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*********************************************/
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.reveal section[data-auto-animate] .auto-animate-target {
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transition-property: all;
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-webkit-transform-origin: top left;
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transform-origin: top left; }
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/*********************************************
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* PAUSED MODE
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*********************************************/
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117
js/reveal.js
117
js/reveal.js
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@ -394,6 +394,9 @@
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// <style> element used to apply auto-animations
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autoAnimateStyleSheet,
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// Counter used to generate unique IDs for auto-animated elements
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autoAnimateCounter = 0,
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// The current auto-slide duration
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autoSlide = 0,
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@ -1427,9 +1430,10 @@
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toArray( dom.wrapper.querySelectorAll( '.slides .auto-animate-start' ) ).forEach( function( element ) {
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element.classList.remove( 'auto-animate-start' );
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} );
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toArray( dom.wrapper.querySelectorAll( '[data-auto-animate-id]' ) ).forEach( function( element ) {
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element.removeAttribute( 'data-auto-animate-id' );
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toArray( dom.wrapper.querySelectorAll( '[data-auto-animate-target]' ) ).forEach( function( element ) {
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element.removeAttribute( 'data-auto-animate-target' );
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} );
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if( autoAnimateStyleSheet && autoAnimateStyleSheet.parentNode ) {
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autoAnimateStyleSheet.parentNode.removeChild( autoAnimateStyleSheet );
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autoAnimateStyleSheet = null;
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@ -3040,7 +3044,7 @@
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cueAutoSlide();
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// Auto-animation
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if( slideChanged && previousSlide && currentSlide ) {
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if( config.autoAnimate && slideChanged && previousSlide && currentSlide ) {
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// Skip the slide transition between our two slides
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// when auto-animating individual elements
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@ -3824,54 +3828,56 @@
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*/
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function autoAnimate( fromSlide, toSlide ) {
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if( config.autoAnimate ) {
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// Lazily create the auto-animate stylesheet
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if( !autoAnimateStyleSheet ) {
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autoAnimateStyleSheet = document.createElement( 'style' );
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document.querySelector( 'head' ).appendChild( autoAnimateStyleSheet );
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}
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var animationOptions = {
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easing: config.autoAnimateEasing,
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duration: config.autoAnimateDuration,
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offsetY: 0
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};
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// If our slides are centered vertically, we need to
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// account for their difference in position when
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// calculating deltas for animated elements
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if( config.center ) {
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animationOptions.offsetY = fromSlide.offsetTop - toSlide.offsetTop;
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}
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// Check if easing is overriden
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if( toSlide.hasAttribute( 'data-auto-animate-easing' ) ) {
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animationOptions.easing = toSlide.getAttribute( 'data-auto-animate-easing' );
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}
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// Check if the duration is overriden
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if( toSlide.hasAttribute( 'data-auto-animate-duration' ) ) {
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animationOptions.duration = parseFloat( toSlide.getAttribute( 'data-auto-animate-duration' ) );
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}
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// Reset any prior animation
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fromSlide.classList.remove( 'auto-animate-start' );
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toSlide.classList.remove( 'auto-animate-start' );
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autoAnimateStyleSheet.innerHTML = '';
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// Generate and write out custom auto-animate styles to the DOM
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autoAnimateStyleSheet.innerHTML = getAutoAnimatableElements( fromSlide, toSlide ).map( function( elements, i ) {
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return getAutoAnimateCSS( elements[0], elements[1], elements[2] || {}, animationOptions, i );
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} ).join( '' );
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// Start the animation next cycle
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setTimeout( function() {
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toSlide.classList.add( 'auto-animate-start' );
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}, 0 );
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// Lazily create the auto-animate stylesheet
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if( !autoAnimateStyleSheet ) {
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autoAnimateStyleSheet = document.createElement( 'style' );
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document.head.appendChild( autoAnimateStyleSheet );
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}
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else {
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autoAnimateStyleSheet.innerHTML = '';
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}
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var animationOptions = {
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easing: config.autoAnimateEasing,
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duration: config.autoAnimateDuration,
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offsetY: 0
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};
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// If our slides are centered vertically, we need to
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// account for their difference in position when
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// calculating deltas for animated elements
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if( config.center ) {
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animationOptions.offsetY = fromSlide.offsetTop - toSlide.offsetTop;
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}
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// Check if easing is overriden
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if( toSlide.hasAttribute( 'data-auto-animate-easing' ) ) {
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animationOptions.easing = toSlide.getAttribute( 'data-auto-animate-easing' );
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}
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// Check if the duration is overriden
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if( toSlide.hasAttribute( 'data-auto-animate-duration' ) ) {
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animationOptions.duration = parseFloat( toSlide.getAttribute( 'data-auto-animate-duration' ) );
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}
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// Remove any existing animate-target IDs to keep the DOM clean
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toArray( document.querySelectorAll( '[data-auto-animate-target]' ) ).forEach( function( element ) {
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element.removeAttribute( 'data-auto-animate-target' );
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} );
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// Reset any prior animation
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fromSlide.classList.remove( 'auto-animate-start' );
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toSlide.classList.remove( 'auto-animate-start' );
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// Generate and write out custom auto-animate styles to the DOM
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autoAnimateStyleSheet.innerHTML += getAutoAnimatableElements( fromSlide, toSlide ).map( function( elements ) {
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return getAutoAnimateCSS( elements[0], elements[1], elements[2] || {}, animationOptions, autoAnimateCounter++ );
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} ).join( '' );
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// Start the animation next cycle
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setTimeout( function() {
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toSlide.classList.add( 'auto-animate-start' );
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}, 0 );
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}
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@ -3884,11 +3890,14 @@
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* @param {Object} options Optional settings for this specific pair
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* @param {Object} animationOptions Options that apply to all
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* elements in this transition
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* @param {String} id Unique ID that we can use to identify this
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* auto-animate element in the DOM
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*/
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function getAutoAnimateCSS( from, to, options, animationOptions, id ) {
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// Each element gets a unique auto-animate ID
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to.setAttribute( 'data-auto-animate-id', id );
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from.setAttribute( 'data-auto-animate-target', '' );
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to.setAttribute( 'data-auto-animate-target', id );
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var fromProps = getAutoAnimatableProperties( 'from', from, options ),
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toProps = getAutoAnimatableProperties( 'to', to, options );
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@ -3917,7 +3926,7 @@
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if( options.scale !== false ) transform.push( 'scale('+delta.scaleX+','+delta.scaleY+')' );
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fromProps.styles.push([ 'transform', transform.join( ' ' ) ]);
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fromProps.styles.push([ 'transformOrigin', 'top left' ]);
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fromProps.styles.push([ 'transform-origin', 'top left' ]);
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toProps.styles.push([ 'transform', 'none' ]);
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@ -3933,8 +3942,8 @@
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return style[0] + ': ' + style[1] + ' !important;';
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} ).join( '' );
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return '.reveal [data-auto-animate-id="'+ id +'"] {\n'+ fromCSS +'\n}\n\n' +
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'.reveal .auto-animate-start [data-auto-animate-id="'+ id +'"] {\n'+ toCSS +'\n}\n\n';
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return '.reveal [data-auto-animate-target="'+ id +'"] {'+ fromCSS +'}' +
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'.reveal .auto-animate-start [data-auto-animate-target="'+ id +'"] {'+ toCSS +'}';
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}
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