diff options
| author | Hakim El Hattab <hakim.elhattab@gmail.com> | 2013-10-13 14:36:27 -0400 |
|---|---|---|
| committer | Hakim El Hattab <hakim.elhattab@gmail.com> | 2013-10-13 14:36:27 -0400 |
| commit | abf33e55b0311f55ea861e23f862bb886115ea58 (patch) | |
| tree | b3a61013ec1f032cb89b6421d5f3d9eb845f1196 /js | |
| parent | 356a1cf3b74a83d3a773a28bc75dc13e764467fb (diff) | |
| download | fosdem-2018-presentation-abf33e55b0311f55ea861e23f862bb886115ea58.tar fosdem-2018-presentation-abf33e55b0311f55ea861e23f862bb886115ea58.tar.gz | |
functional playback control for auto sliding
Diffstat (limited to 'js')
| -rw-r--r-- | js/reveal.js | 144 | ||||
| -rw-r--r-- | js/reveal.min.js | 4 |
2 files changed, 105 insertions, 43 deletions
diff --git a/js/reveal.js b/js/reveal.js index 7a3b0e0..726134d 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -114,9 +114,6 @@ var Reveal = (function(){ // Flags if reveal.js is loaded (has dispatched the 'ready' event) loaded = false, - // The current auto-slide duration - autoSlide = 0, - // The horizontal and vertical index of the currently active slide indexh, indexv, @@ -145,9 +142,6 @@ var Reveal = (function(){ // Throttles mouse wheel navigation lastMouseWheelStep = 0, - // An interval used to automatically move on to the next slide - autoSlideTimeout = 0, - // Delays updates to the URL due to a Chrome thumbnailer bug writeURLTimeout = 0, @@ -160,8 +154,14 @@ var Reveal = (function(){ // Flags if the interaction event listeners are bound eventsAreBound = false, - // A visual component used to control auto slide playback + // The current auto-slide duration + autoSlide = 0, + + // Auto slide properties autoSlidePlayer, + autoSlideTimeout = 0, + autoSlideStartTime = -1, + autoSlidePaused = false, // Holds information about the currently ongoing touch input touch = { @@ -574,12 +574,15 @@ var Reveal = (function(){ enablePreviewLinks( '[data-preview-link]' ); } - if( config.autoSlide && config.autoSlideStoppable ) { + // Auto-slide playback controls + if( config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) { autoSlidePlayer = new Playback( dom.wrapper, function() { - return 0.5; + return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 ); } ); - autoSlidePlayer.setPlaying( true ); + autoSlidePlayer.on( 'click', function() { + autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide(); + } ); } else if( autoSlidePlayer ) { autoSlidePlayer.destroy(); @@ -1607,6 +1610,18 @@ var Reveal = (function(){ // Update the URL hash writeURL(); + // If the current slide has a data-autoslide use that, + // otherwise use the config.autoSlide value + var slideAutoSlide = currentSlide.getAttribute( 'data-autoslide' ); + if( slideAutoSlide ) { + autoSlide = parseInt( slideAutoSlide, 10 ); + } + else { + autoSlide = config.autoSlide; + } + + cueAutoSlide(); + } /** @@ -1717,18 +1732,6 @@ var Reveal = (function(){ state = state.concat( slideState.split( ' ' ) ); } - // If this slide has a data-autoslide attribute associated use this as - // autoSlide value otherwise use the global configured time - var slideAutoSlide = slides[index].getAttribute( 'data-autoslide' ); - if( slideAutoSlide ) { - autoSlide = parseInt( slideAutoSlide, 10 ); - } - else { - autoSlide = config.autoSlide; - } - - cueAutoSlide(); - } else { // Since there are no slides we can't be anywhere beyond the @@ -2256,12 +2259,24 @@ var Reveal = (function(){ function cueAutoSlide() { clearTimeout( autoSlideTimeout ); + autoSlideTimeout = -1; + + autoSlideStartTime = Date.now(); - // Cue the next auto-slide if enabled - if( autoSlide && !isPaused() && !isOverview() ) { + // Cue the next auto-slide if: + // - There is an autoSlide value + // - Auto-sliding isn't paused by the user + // - The presentation isn't paused + // - The overview isn't active + // - The presentation isn't over + if( autoSlide && !autoSlidePaused && !isPaused() && !isOverview() && ( !Reveal.isLastSlide() || config.loop === true ) ) { autoSlideTimeout = setTimeout( navigateNext, autoSlide ); } + if( autoSlidePlayer ) { + autoSlidePlayer.setPlaying( autoSlideTimeout !== -1 ); + } + } /** @@ -2273,6 +2288,24 @@ var Reveal = (function(){ } + function pauseAutoSlide() { + + autoSlidePaused = true; + clearTimeout( autoSlideTimeout ); + + if( autoSlidePlayer ) { + autoSlidePlayer.setPlaying( false ); + } + + } + + function resumeAutoSlide() { + + autoSlidePaused = false; + cueAutoSlide(); + + } + function navigateLeft() { // Reverse for RTL @@ -2376,8 +2409,7 @@ var Reveal = (function(){ function onUserInput( event ) { if( config.autoSlideStoppable ) { - config.autoSlide = 0; - cancelAutoSlide(); + pauseAutoSlide(); } } @@ -2387,6 +2419,8 @@ var Reveal = (function(){ */ function onDocumentKeyDown( event ) { + onUserInput( event ); + // Check if there's a focused element that could be using // the keyboard var activeElement = document.activeElement; @@ -2488,8 +2522,6 @@ var Reveal = (function(){ // another timeout cueAutoSlide(); - onUserInput( event ); - } /** @@ -2498,6 +2530,8 @@ var Reveal = (function(){ */ function onTouchStart( event ) { + onUserInput( event ); + touch.startX = event.touches[0].clientX; touch.startY = event.touches[0].clientY; touch.startCount = event.touches.length; @@ -2514,8 +2548,6 @@ var Reveal = (function(){ } ); } - onUserInput( event ); - } /** @@ -2617,13 +2649,13 @@ var Reveal = (function(){ */ function onPointerDown( event ) { + onUserInput( event ); + if( event.pointerType === event.MSPOINTER_TYPE_TOUCH ) { event.touches = [{ clientX: event.clientX, clientY: event.clientY }]; onTouchStart( event ); } - onUserInput( event ); - } /** @@ -2680,6 +2712,8 @@ var Reveal = (function(){ */ function onProgressClicked( event ) { + onUserInput( event ); + event.preventDefault(); var slidesTotal = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length; @@ -2687,19 +2721,17 @@ var Reveal = (function(){ slide( slideIndex ); - onUserInput( event ); - } /** * Event handler for navigation control buttons. */ - function onNavigateLeftClicked( event ) { event.preventDefault(); navigateLeft(); onUserInput(); } - function onNavigateRightClicked( event ) { event.preventDefault(); navigateRight(); onUserInput(); } - function onNavigateUpClicked( event ) { event.preventDefault(); navigateUp(); onUserInput(); } - function onNavigateDownClicked( event ) { event.preventDefault(); navigateDown(); onUserInput(); } - function onNavigatePrevClicked( event ) { event.preventDefault(); navigatePrev(); onUserInput(); } - function onNavigateNextClicked( event ) { event.preventDefault(); navigateNext(); onUserInput(); } + function onNavigateLeftClicked( event ) { event.preventDefault(); onUserInput(); navigateLeft(); } + function onNavigateRightClicked( event ) { event.preventDefault(); onUserInput(); navigateRight(); } + function onNavigateUpClicked( event ) { event.preventDefault(); onUserInput(); navigateUp(); } + function onNavigateDownClicked( event ) { event.preventDefault(); onUserInput(); navigateDown(); } + function onNavigatePrevClicked( event ) { event.preventDefault(); onUserInput(); navigatePrev(); } + function onNavigateNextClicked( event ) { event.preventDefault(); onUserInput(); navigateNext(); } /** * Handler for the window level 'hashchange' event. @@ -2845,12 +2877,14 @@ var Reveal = (function(){ Playback.prototype.render = function() { + var progress = this.playing ? this.progress : 0; + var radius = ( this.size / 2 ) - this.thickness, x = this.size / 2, y = this.size / 2; var startAngle = - Math.PI / 2; - var endAngle = startAngle + ( this.progress * ( Math.PI * 2 ) ); + var endAngle = startAngle + ( progress * ( Math.PI * 2 ) ); this.context.save(); this.context.clearRect( 0, 0, this.size, this.size ); @@ -2875,6 +2909,26 @@ var Reveal = (function(){ this.context.strokeStyle = '#fff'; this.context.stroke(); + var iconSize = 14; + + this.context.translate( x - ( iconSize / 2 ), y - ( iconSize / 2 ) ); + + // Draw play/pause icons + if( this.playing ) { + this.context.fillStyle = '#fff'; + this.context.fillRect( 0, 0, iconSize / 2 - 2, iconSize ); + this.context.fillRect( iconSize / 2 + 2, 0, iconSize / 2 - 2, iconSize ); + } + else { + this.context.beginPath(); + this.context.translate( 2, 0 ); + this.context.moveTo( 0, 0 ); + this.context.lineTo( iconSize - 2, iconSize / 2 ); + this.context.lineTo( 0, iconSize ); + this.context.fillStyle = '#fff'; + this.context.fill(); + } + this.context.restore(); }; @@ -2887,6 +2941,14 @@ var Reveal = (function(){ }; + Playback.prototype.on = function( type, listener ) { + this.canvas.addEventListener( type, listener, false ); + }; + + Playback.prototype.off = function( type, listener ) { + this.canvas.removeEventListener( type, listener, false ); + }; + // --------------------------------------------------------------------// // ------------------------------- API --------------------------------// diff --git a/js/reveal.min.js b/js/reveal.min.js index 47a56e6..4b15359 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,8 +1,8 @@ /*! - * reveal.js 2.6.0-dev (2013-10-13, 13:08) + * reveal.js 2.6.0-dev (2013-10-13, 14:35) * http://lab.hakim.se/reveal-js * MIT licensed * * Copyright (C) 2013 Hakim El Hattab, http://hakim.se */ -var Reveal=function(){"use strict";function a(a){return b(),Zb.transforms2d||Zb.transforms3d?(window.addEventListener("load",C,!1),l(Tb,a),l(Tb,Reveal.getQueryHash()),s(),c(),void 0):(document.body.setAttribute("class","no-transforms"),void 0)}function b(){Zb.transforms3d="WebkitPerspective"in document.body.style||"MozPerspective"in document.body.style||"msPerspective"in document.body.style||"OPerspective"in 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