auto-animate refactoring and optimization
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Hakim El Hattab
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ed4cbdfd03
112
js/reveal.js
112
js/reveal.js
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@ -202,19 +202,19 @@
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// CSS styles that auto-animations will animate between
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autoAnimateStyles: [
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{ property: 'opacity' },
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{ property: 'color' },
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{ property: 'background-color' },
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{ property: 'padding' },
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{ property: 'font-size' },
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{ property: 'line-height' },
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{ property: 'letter-spacing' },
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{ property: 'border-width' },
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{ property: 'border-color' },
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{ property: 'border-top-left-radius' },
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{ property: 'border-top-right-radius' },
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{ property: 'border-bottom-left-radius' },
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{ property: 'border-bottom-right-radius' }
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'opacity',
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'color',
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'background-color',
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'padding',
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'font-size',
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'line-height',
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'letter-spacing',
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'border-width',
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'border-color',
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'border-top-left-radius',
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'border-top-right-radius',
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'border-bottom-left-radius',
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'border-bottom-right-radius'
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],
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// Controls automatic progression to the next slide
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@ -1428,11 +1428,11 @@
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}
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// Reset all auto animated elements
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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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toArray( dom.slides.querySelectorAll( '[data-auto-animate]:not([data-auto-animate=""])' ) ).forEach( function( element ) {
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element.dataset.autoAnimate = '';
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} );
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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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delete element.dataset.autoAnimateTarget;
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} );
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if( autoAnimateStyleSheet && autoAnimateStyleSheet.parentNode ) {
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@ -3045,22 +3045,22 @@
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cueAutoSlide();
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// Auto-animation
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if( config.autoAnimate && slideChanged && previousSlide && currentSlide ) {
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if( 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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if( previousSlide.hasAttribute( 'data-auto-animate' ) && currentSlide.hasAttribute( 'data-auto-animate' ) ) {
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previousSlide.style.transition = 'none';
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currentSlide.style.transition = 'none';
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dom.slides.classList.add( 'disable-slide-transitions' );
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setTimeout( function() {
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if( previousSlide ) previousSlide.style.transition = '';
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if( currentSlide ) currentSlide.style.transition = '';
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dom.slides.classList.remove( 'disable-slide-transitions' );
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}, 0 );
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}
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if( config.autoAnimate ) {
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// Run the auto-animation between our slides
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autoAnimate( previousSlide, currentSlide );
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}
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}
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@ -3863,33 +3863,33 @@
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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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if( toSlide.dataset.autoAnimateEasing ) {
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animationOptions.easing = toSlide.dataset.autoAnimateEasing;
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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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if( toSlide.dataset.autoAnimateDuration ) {
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animationOptions.duration = parseFloat( toSlide.dataset.autoAnimateDuration );
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}
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// Remove any existing animate-target IDs to keep the DOM clean
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// Clean up from previous animations to avoid polluting the DOM
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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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delete element.dataset.autoAnimateTarget;
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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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// Set out starting state
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fromSlide.dataset.autoAnimate = 'pending';
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toSlide.dataset.autoAnimate = 'pending';
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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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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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requestAnimationFrame( function() {
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toSlide.dataset.autoAnimate = 'running';
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} );
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}
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@ -3908,17 +3908,17 @@
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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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from.setAttribute( 'data-auto-animate-target', '' );
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to.setAttribute( 'data-auto-animate-target', id );
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from.dataset.autoAnimateTarget = '';
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to.dataset.autoAnimateTarget = id;
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var fromProps = getAutoAnimatableProperties( 'from', from, options ),
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toProps = getAutoAnimatableProperties( 'to', to, options );
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// Instantly move to the 'from' state
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fromProps.styles.push([ 'transition', 'none' ]);
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fromProps.styles['transition'] = 'none';
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// transition to the 'to' state
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toProps.styles.push([ 'transition', 'all '+ animationOptions.duration +'s '+ animationOptions.easing ]);
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toProps.styles['transition'] = 'all '+ animationOptions.duration +'s '+ animationOptions.easing;
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// If translation and/or scalin are enabled, offset the
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// 'to' element so that it starts out at the same position
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@ -3937,25 +3937,30 @@
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if( options.translate !== false ) transform.push( 'translate('+delta.x+'px, '+delta.y+'px)' );
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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([ 'transform-origin', 'top left' ]);
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fromProps.styles['transform'] = transform.join( ' ' );
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fromProps.styles['transform-origin'] = 'top left';
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toProps.styles.push([ 'transform', 'none' ]);
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toProps.styles['transform'] = 'none';
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}
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// Build up our custom CSS. We need to override inline styles
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// so we need to make our styles vErY IMPORTANT!1!!
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var fromCSS = fromProps.styles.map( function( style ) {
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return style[0] + ': ' + style[1] + ' !important;';
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var fromCSS = Object.keys( fromProps.styles ).map( function( propertyName ) {
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return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;';
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} ).join( '' );
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var toCSS = toProps.styles.map( function( style ) {
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return style[0] + ': ' + style[1] + ' !important;';
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var toCSS = Object.keys( toProps.styles ).map( function( propertyName ) {
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if( toProps.styles[propertyName] !== fromProps.styles[propertyName] ) {
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return propertyName + ': ' + toProps.styles[propertyName] + ' !important;';
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}
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else {
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return '';
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}
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} ).join( '' );
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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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return '.reveal [data-auto-animate] [data-auto-animate-target="'+ id +'"] {'+ fromCSS +'}' +
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'.reveal [data-auto-animate="running"] [data-auto-animate-target="'+ id +'"] {'+ toCSS +'}';
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}
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@ -3976,12 +3981,16 @@
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properties.height = element.offsetHeight;
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}
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var computedStyles;
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var computedStyles = window.getComputedStyle( element );
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// CSS styles
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( options.styles || config.autoAnimateStyles ).forEach( function( style ) {
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var value;
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// `style` is either the property name directly, or an object
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// definition of a style property
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if( typeof style === 'string' ) style = { property: style };
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if( typeof style.from !== 'undefined' && direction === 'from' ) {
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value = style.from;
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}
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@ -3989,16 +3998,11 @@
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value = style.to;
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}
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else {
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value = element.style[style.property];
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if( value === '' ) {
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computedStyles = computedStyles || window.getComputedStyle( element );
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value = computedStyles[style.property];
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}
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}
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if( value !== '' ) {
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properties.styles.push([ style.property, value ]);
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properties.styles[style.property] = value;
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}
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} );
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