// This file was automatically generated from files in src/ directory.
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/**
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* impress.js
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*
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* impress.js is a presentation tool based on the power of CSS3 transforms and transitions
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* in modern browsers and inspired by the idea behind prezi.com.
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*
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*
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* Copyright 2011-2012 Bartek Szopka (@bartaz), 2016-2018 Henrik Ingo (@henrikingo)
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*
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* Released under the MIT and GPL Licenses.
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*
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* ------------------------------------------------
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* author: Bartek Szopka, Henrik Ingo
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* version: 1.0.0
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* url: http://impress.js.org
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* source: http://github.com/impress/impress.js/
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*/
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// You are one of those who like to know how things work inside?
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// Let me show you the cogs that make impress.js run...
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( function( document, window ) {
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"use strict";
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var lib;
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// HELPER FUNCTIONS
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// `pfx` is a function that takes a standard CSS property name as a parameter
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// and returns it's prefixed version valid for current browser it runs in.
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// The code is heavily inspired by Modernizr http://www.modernizr.com/
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var pfx = ( function() {
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var style = document.createElement( "dummy" ).style,
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prefixes = "Webkit Moz O ms Khtml".split( " " ),
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memory = {};
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return function( prop ) {
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if ( typeof memory[ prop ] === "undefined" ) {
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var ucProp = prop.charAt( 0 ).toUpperCase() + prop.substr( 1 ),
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props = ( prop + " " + prefixes.join( ucProp + " " ) + ucProp ).split( " " );
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memory[ prop ] = null;
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for ( var i in props ) {
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if ( style[ props[ i ] ] !== undefined ) {
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memory[ prop ] = props[ i ];
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break;
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}
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}
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}
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return memory[ prop ];
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};
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} )();
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var validateOrder = function( order, fallback ) {
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var validChars = "xyz";
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var returnStr = "";
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if ( typeof order === "string" ) {
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for ( var i in order.split( "" ) ) {
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if ( validChars.indexOf( order[ i ] ) >= 0 ) {
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returnStr += order[ i ];
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// Each of x,y,z can be used only once.
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validChars = validChars.split( order[ i ] ).join( "" );
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}
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}
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}
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if ( returnStr ) {
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return returnStr;
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} else if ( fallback !== undefined ) {
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return fallback;
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} else {
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return "xyz";
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}
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};
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// `css` function applies the styles given in `props` object to the element
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// given as `el`. It runs all property names through `pfx` function to make
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// sure proper prefixed version of the property is used.
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var css = function( el, props ) {
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var key, pkey;
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for ( key in props ) {
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if ( props.hasOwnProperty( key ) ) {
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pkey = pfx( key );
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if ( pkey !== null ) {
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el.style[ pkey ] = props[ key ];
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}
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}
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}
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return el;
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};
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// `translate` builds a translate transform string for given data.
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var translate = function( t ) {
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return " translate3d(" + t.x + "px," + t.y + "px," + t.z + "px) ";
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};
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// `rotate` builds a rotate transform string for given data.
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// By default the rotations are in X Y Z order that can be reverted by passing `true`
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// as second parameter.
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var rotate = function( r, revert ) {
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var order = r.order ? r.order : "xyz";
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var css = "";
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var axes = order.split( "" );
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if ( revert ) {
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axes = axes.reverse();
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}
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for ( var i = 0; i < axes.length; i++ ) {
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css += " rotate" + axes[ i ].toUpperCase() + "(" + r[ axes[ i ] ] + "deg)";
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}
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return css;
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};
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// `scale` builds a scale transform string for given data.
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var scale = function( s ) {
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return " scale(" + s + ") ";
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};
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// `computeWindowScale` counts the scale factor between window size and size
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// defined for the presentation in the config.
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var computeWindowScale = function( config ) {
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var hScale = window.innerHeight / config.height,
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wScale = window.innerWidth / config.width,
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scale = hScale > wScale ? wScale : hScale;
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if ( config.maxScale && scale > config.maxScale ) {
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scale = config.maxScale;
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}
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if ( config.minScale && scale < config.minScale ) {
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scale = config.minScale;
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}
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return scale;
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};
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// CHECK SUPPORT
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var body = document.body;
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var impressSupported =
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// Browser should support CSS 3D transtorms
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( pfx( "perspective" ) !== null ) &&
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// And `classList` and `dataset` APIs
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( body.classList ) &&
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( body.dataset );
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if ( !impressSupported ) {
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// We can't be sure that `classList` is supported
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body.className += " impress-not-supported ";
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}
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// GLOBALS AND DEFAULTS
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// This is where the root elements of all impress.js instances will be kept.
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// Yes, this means you can have more than one instance on a page, but I'm not
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// sure if it makes any sense in practice ;)
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var roots = {};
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var preInitPlugins = [];
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var preStepLeavePlugins = [];
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// Some default config values.
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var defaults = {
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width: 1024,
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height: 768,
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maxScale: 1,
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minScale: 0,
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perspective: 1000,
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transitionDuration: 1000
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};
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// It's just an empty function ... and a useless comment.
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var empty = function() { return false; };
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// IMPRESS.JS API
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// And that's where interesting things will start to happen.
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// It's the core `impress` function that returns the impress.js API
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// for a presentation based on the element with given id ("impress"
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// by default).
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var impress = window.impress = function( rootId ) {
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// If impress.js is not supported by the browser return a dummy API
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// it may not be a perfect solution but we return early and avoid
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// running code that may use features not implemented in the browser.
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if ( !impressSupported ) {
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return {
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init: empty,
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goto: empty,
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prev: empty,
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next: empty,
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swipe: empty,
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tear: empty,
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lib: {}
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};
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}
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rootId = rootId || "impress";
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// If given root is already initialized just return the API
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if ( roots[ "impress-root-" + rootId ] ) {
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return roots[ "impress-root-" + rootId ];
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}
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// The gc library depends on being initialized before we do any changes to DOM.
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lib = initLibraries( rootId );
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body.classList.remove( "impress-not-supported" );
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body.classList.add( "impress-supported" );
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// Data of all presentation steps
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var stepsData = {};
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// Element of currently active step
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var activeStep = null;
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// Current state (position, rotation and scale) of the presentation
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var currentState = null;
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// Array of step elements
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var steps = null;
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// Configuration options
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var config = null;
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// Scale factor of the browser window
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var windowScale = null;
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// Root presentation elements
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var root = lib.util.byId( rootId );
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var canvas = document.createElement( "div" );
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var initialized = false;
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// STEP EVENTS
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//
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// There are currently two step events triggered by impress.js
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// `impress:stepenter` is triggered when the step is shown on the
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// screen (the transition from the previous one is finished) and
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// `impress:stepleave` is triggered when the step is left (the
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// transition to next step just starts).
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// Reference to last entered step
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var lastEntered = null;
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// `onStepEnter` is called whenever the step element is entered
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// but the event is triggered only if the step is different than
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// last entered step.
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// We sometimes call `goto`, and therefore `onStepEnter`, just to redraw a step, such as
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// after screen resize. In this case - more precisely, in any case - we trigger a
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// `impress:steprefresh` event.
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var onStepEnter = function( step ) {
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if ( lastEntered !== step ) {
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lib.util.triggerEvent( step, "impress:stepenter" );
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lastEntered = step;
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}
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lib.util.triggerEvent( step, "impress:steprefresh" );
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};
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// `onStepLeave` is called whenever the currentStep element is left
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// but the event is triggered only if the currentStep is the same as
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// lastEntered step.
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var onStepLeave = function( currentStep, nextStep ) {
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if ( lastEntered === currentStep ) {
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lib.util.triggerEvent( currentStep, "impress:stepleave", { next: nextStep } );
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lastEntered = null;
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}
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};
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// `initStep` initializes given step element by reading data from its
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// data attributes and setting correct styles.
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var initStep = function( el, idx ) {
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var data = el.dataset,
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step = {
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translate: {
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x: lib.util.toNumber( data.x ),
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y: lib.util.toNumber( data.y ),
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z: lib.util.toNumber( data.z )
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},
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rotate: {
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x: lib.util.toNumber( data.rotateX ),
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y: lib.util.toNumber( data.rotateY ),
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z: lib.util.toNumber( data.rotateZ || data.rotate ),
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order: validateOrder( data.rotateOrder )
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},
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scale: lib.util.toNumber( data.scale, 1 ),
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transitionDuration: lib.util.toNumber(
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data.transitionDuration, config.transitionDuration
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),
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el: el
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};
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if ( !el.id ) {
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el.id = "step-" + ( idx + 1 );
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}
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stepsData[ "impress-" + el.id ] = step;
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css( el, {
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position: "absolute",
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transform: "translate(-50%,-50%)" +
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translate( step.translate ) +
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rotate( step.rotate ) +
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scale( step.scale ),
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transformStyle: "preserve-3d"
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} );
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};
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// Initialize all steps.
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// Read the data-* attributes, store in internal stepsData, and render with CSS.
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var initAllSteps = function() {
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steps = lib.util.$$( ".step", root );
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steps.forEach( initStep );
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};
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// `init` API function that initializes (and runs) the presentation.
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var init = function() {
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if ( initialized ) { return; }
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execPreInitPlugins( root );
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// First we set up the viewport for mobile devices.
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// For some reason iPad goes nuts when it is not done properly.
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var meta = lib.util.$( "meta[name='viewport']" ) || document.createElement( "meta" );
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meta.content = "width=device-width, minimum-scale=1, maximum-scale=1, user-scalable=no";
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if ( meta.parentNode !== document.head ) {
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meta.name = "viewport";
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document.head.appendChild( meta );
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}
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// Initialize configuration object
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var rootData = root.dataset;
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config = {
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width: lib.util.toNumber( rootData.width, defaults.width ),
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height: lib.util.toNumber( rootData.height, defaults.height ),
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maxScale: lib.util.toNumber( rootData.maxScale, defaults.maxScale ),
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minScale: lib.util.toNumber( rootData.minScale, defaults.minScale ),
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perspective: lib.util.toNumber( rootData.perspective, defaults.perspective ),
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transitionDuration: lib.util.toNumber(
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rootData.transitionDuration, defaults.transitionDuration
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)
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};
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windowScale = computeWindowScale( config );
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// Wrap steps with "canvas" element
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lib.util.arrayify( root.childNodes ).forEach( function( el ) {
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canvas.appendChild( el );
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} );
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root.appendChild( canvas );
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// Set initial styles
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document.documentElement.style.height = "100%";
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css( body, {
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height: "100%",
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overflow: "hidden"
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} );
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var rootStyles = {
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position: "absolute",
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transformOrigin: "top left",
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transition: "all 0s ease-in-out",
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transformStyle: "preserve-3d"
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};
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css( root, rootStyles );
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css( root, {
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top: "50%",
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left: "50%",
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perspective: ( config.perspective / windowScale ) + "px",
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transform: scale( windowScale )
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} );
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css( canvas, rootStyles );
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body.classList.remove( "impress-disabled" );
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body.classList.add( "impress-enabled" );
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// Get and init steps
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initAllSteps();
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// Set a default initial state of the canvas
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currentState = {
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translate: { x: 0, y: 0, z: 0 },
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rotate: { x: 0, y: 0, z: 0, order: "xyz" },
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scale: 1
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};
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initialized = true;
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lib.util.triggerEvent( root, "impress:init",
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{ api: roots[ "impress-root-" + rootId ] } );
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};
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// `getStep` is a helper function that returns a step element defined by parameter.
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// If a number is given, step with index given by the number is returned, if a string
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// is given step element with such id is returned, if DOM element is given it is returned
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// if it is a correct step element.
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var getStep = function( step ) {
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if ( typeof step === "number" ) {
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step = step < 0 ? steps[ steps.length + step ] : steps[ step ];
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} else if ( typeof step === "string" ) {
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step = lib.util.byId( step );
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}
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return ( step && step.id && stepsData[ "impress-" + step.id ] ) ? step : null;
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};
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// Used to reset timeout for `impress:stepenter` event
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var stepEnterTimeout = null;
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// `goto` API function that moves to step given as `el` parameter (by index, id or element).
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// `duration` optionally given as second parameter, is the transition duration in css.
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// `reason` is the string "next", "prev" or "goto" (default) and will be made available to
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// preStepLeave plugins.
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// `origEvent` may contain event that caused the call to goto, such as a key press event
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var goto = function( el, duration, reason, origEvent ) {
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reason = reason || "goto";
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origEvent = origEvent || null;
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if ( !initialized ) {
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return false;
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}
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// Re-execute initAllSteps for each transition. This allows to edit step attributes
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// dynamically, such as change their coordinates, or even remove or add steps, and have
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// that change apply when goto() is called.
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initAllSteps();
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if ( !( el = getStep( el ) ) ) {
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return false;
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}
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// Sometimes it's possible to trigger focus on first link with some keyboard action.
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// Browser in such a case tries to scroll the page to make this element visible
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// (even that body overflow is set to hidden) and it breaks our careful positioning.
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//
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// So, as a lousy (and lazy) workaround we will make the page scroll back to the top
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// whenever slide is selected
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//
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// If you are reading this and know any better way to handle it, I'll be glad to hear
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// about it!
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window.scrollTo( 0, 0 );
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var step = stepsData[ "impress-" + el.id ];
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duration = ( duration !== undefined ? duration : step.transitionDuration );
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// If we are in fact moving to another step, start with executing the registered
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// preStepLeave plugins.
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if ( activeStep && activeStep !== el ) {
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var event = { target: activeStep, detail: {} };
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event.detail.next = el;
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event.detail.transitionDuration = duration;
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event.detail.reason = reason;
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if ( origEvent ) {
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event.origEvent = origEvent;
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}
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if ( execPreStepLeavePlugins( event ) === false ) {
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// PreStepLeave plugins are allowed to abort the transition altogether, by
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// returning false.
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// see stop and substep plugins for an example of doing just that
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return false;
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}
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// Plugins are allowed to change the detail values
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el = event.detail.next;
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step = stepsData[ "impress-" + el.id ];
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duration = event.detail.transitionDuration;
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}
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if ( activeStep ) {
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activeStep.classList.remove( "active" );
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body.classList.remove( "impress-on-" + activeStep.id );
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}
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el.classList.add( "active" );
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body.classList.add( "impress-on-" + el.id );
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// Compute target state of the canvas based on given step
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var target = {
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rotate: {
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x: -step.rotate.x,
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y: -step.rotate.y,
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z: -step.rotate.z,
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order: step.rotate.order
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},
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translate: {
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x: -step.translate.x,
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y: -step.translate.y,
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z: -step.translate.z
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},
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scale: 1 / step.scale
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};
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// Check if the transition is zooming in or not.
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//
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// This information is used to alter the transition style:
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// when we are zooming in - we start with move and rotate transition
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// and the scaling is delayed, but when we are zooming out we start
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// with scaling down and move and rotation are delayed.
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var zoomin = target.scale >= currentState.scale;
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duration = lib.util.toNumber( duration, config.transitionDuration );
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var delay = ( duration / 2 );
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// If the same step is re-selected, force computing window scaling,
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// because it is likely to be caused by window resize
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if ( el === activeStep ) {
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windowScale = computeWindowScale( config );
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}
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var targetScale = target.scale * windowScale;
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// Trigger leave of currently active element (if it's not the same step again)
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if ( activeStep && activeStep !== el ) {
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onStepLeave( activeStep, el );
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}
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// Now we alter transforms of `root` and `canvas` to trigger transitions.
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//
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// And here is why there are two elements: `root` and `canvas` - they are
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// being animated separately:
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// `root` is used for scaling and `canvas` for translate and rotations.
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// Transitions on them are triggered with different delays (to make
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// visually nice and "natural" looking transitions), so we need to know
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// that both of them are finished.
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css( root, {
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// To keep the perspective look similar for different scales
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// we need to "scale" the perspective, too
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// For IE 11 support we must specify perspective independent
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// of transform.
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perspective: ( config.perspective / targetScale ) + "px",
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transform: scale( targetScale ),
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transitionDuration: duration + "ms",
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transitionDelay: ( zoomin ? delay : 0 ) + "ms"
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} );
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css( canvas, {
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transform: rotate( target.rotate, true ) + translate( target.translate ),
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transitionDuration: duration + "ms",
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transitionDelay: ( zoomin ? 0 : delay ) + "ms"
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} );
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// Here is a tricky part...
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//
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// If there is no change in scale or no change in rotation and translation, it means
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// there was actually no delay - because there was no transition on `root` or `canvas`
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// elements. We want to trigger `impress:stepenter` event in the correct moment, so
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// here we compare the current and target values to check if delay should be taken into
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// account.
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//
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// I know that this `if` statement looks scary, but it's pretty simple when you know
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// what is going on - it's simply comparing all the values.
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if ( currentState.scale === target.scale ||
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( currentState.rotate.x === target.rotate.x &&
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currentState.rotate.y === target.rotate.y &&
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currentState.rotate.z === target.rotate.z &&
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currentState.translate.x === target.translate.x &&
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currentState.translate.y === target.translate.y &&
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currentState.translate.z === target.translate.z ) ) {
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delay = 0;
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}
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// Store current state
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currentState = target;
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activeStep = el;
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// And here is where we trigger `impress:stepenter` event.
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// We simply set up a timeout to fire it taking transition duration (and possible delay)
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// into account.
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//
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// I really wanted to make it in more elegant way. The `transitionend` event seemed to
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// be the best way to do it, but the fact that I'm using transitions on two separate
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// elements and that the `transitionend` event is only triggered when there was a
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// transition (change in the values) caused some bugs and made the code really
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// complicated, cause I had to handle all the conditions separately. And it still
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// needed a `setTimeout` fallback for the situations when there is no transition at all.
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// So I decided that I'd rather make the code simpler than use shiny new
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// `transitionend`.
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//
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// If you want learn something interesting and see how it was done with `transitionend`
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// go back to version 0.5.2 of impress.js:
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// http://github.com/bartaz/impress.js/blob/0.5.2/js/impress.js
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window.clearTimeout( stepEnterTimeout );
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stepEnterTimeout = window.setTimeout( function() {
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onStepEnter( activeStep );
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}, duration + delay );
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return el;
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};
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// `prev` API function goes to previous step (in document order)
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// `event` is optional, may contain the event that caused the need to call prev()
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var prev = function( origEvent ) {
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var prev = steps.indexOf( activeStep ) - 1;
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prev = prev >= 0 ? steps[ prev ] : steps[ steps.length - 1 ];
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return goto( prev, undefined, "prev", origEvent );
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};
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// `next` API function goes to next step (in document order)
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// `event` is optional, may contain the event that caused the need to call next()
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var next = function( origEvent ) {
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var next = steps.indexOf( activeStep ) + 1;
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next = next < steps.length ? steps[ next ] : steps[ 0 ];
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return goto( next, undefined, "next", origEvent );
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};
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// Swipe for touch devices by @and3rson.
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// Below we extend the api to control the animation between the currently
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// active step and a presumed next/prev step. See touch plugin for
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// an example of using this api.
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// Helper function
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var interpolate = function( a, b, k ) {
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return a + ( b - a ) * k;
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};
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// Animate a swipe.
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//
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// Pct is a value between -1.0 and +1.0, designating the current length
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// of the swipe.
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//
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// If pct is negative, swipe towards the next() step, if positive,
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// towards the prev() step.
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//
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// Note that pre-stepleave plugins such as goto can mess with what is a
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// next() and prev() step, so we need to trigger the pre-stepleave event
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// here, even if a swipe doesn't guarantee that the transition will
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// actually happen.
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//
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// Calling swipe(), with any value of pct, won't in itself cause a
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// transition to happen, this is just to animate the swipe. Once the
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// transition is committed - such as at a touchend event - caller is
|
// responsible for also calling prev()/next() as appropriate.
|
//
|
// Note: For now, this function is made available to be used by the swipe plugin (which
|
// is the UI counterpart to this). It is a semi-internal API and intentionally not
|
// documented in DOCUMENTATION.md.
|
var swipe = function( pct ) {
|
if ( Math.abs( pct ) > 1 ) {
|
return;
|
}
|
|
// Prepare & execute the preStepLeave event
|
var event = { target: activeStep, detail: {} };
|
event.detail.swipe = pct;
|
|
// Will be ignored within swipe animation, but just in case a plugin wants to read this,
|
// humor them
|
event.detail.transitionDuration = config.transitionDuration;
|
var idx; // Needed by jshint
|
if ( pct < 0 ) {
|
idx = steps.indexOf( activeStep ) + 1;
|
event.detail.next = idx < steps.length ? steps[ idx ] : steps[ 0 ];
|
event.detail.reason = "next";
|
} else if ( pct > 0 ) {
|
idx = steps.indexOf( activeStep ) - 1;
|
event.detail.next = idx >= 0 ? steps[ idx ] : steps[ steps.length - 1 ];
|
event.detail.reason = "prev";
|
} else {
|
|
// No move
|
return;
|
}
|
if ( execPreStepLeavePlugins( event ) === false ) {
|
|
// If a preStepLeave plugin wants to abort the transition, don't animate a swipe
|
// For stop, this is probably ok. For substep, the plugin it self might want to do
|
// some animation, but that's not the current implementation.
|
return false;
|
}
|
var nextElement = event.detail.next;
|
|
var nextStep = stepsData[ "impress-" + nextElement.id ];
|
|
// If the same step is re-selected, force computing window scaling,
|
var nextScale = nextStep.scale * windowScale;
|
var k = Math.abs( pct );
|
|
var interpolatedStep = {
|
translate: {
|
x: interpolate( currentState.translate.x, -nextStep.translate.x, k ),
|
y: interpolate( currentState.translate.y, -nextStep.translate.y, k ),
|
z: interpolate( currentState.translate.z, -nextStep.translate.z, k )
|
},
|
rotate: {
|
x: interpolate( currentState.rotate.x, -nextStep.rotate.x, k ),
|
y: interpolate( currentState.rotate.y, -nextStep.rotate.y, k ),
|
z: interpolate( currentState.rotate.z, -nextStep.rotate.z, k ),
|
|
// Unfortunately there's a discontinuity if rotation order changes. Nothing I
|
// can do about it?
|
order: k < 0.7 ? currentState.rotate.order : nextStep.rotate.order
|
},
|
scale: interpolate( currentState.scale, nextScale, k )
|
};
|
|
css( root, {
|
|
// To keep the perspective look similar for different scales
|
// we need to 'scale' the perspective, too
|
perspective: config.perspective / interpolatedStep.scale + "px",
|
transform: scale( interpolatedStep.scale ),
|
transitionDuration: "0ms",
|
transitionDelay: "0ms"
|
} );
|
|
css( canvas, {
|
transform: rotate( interpolatedStep.rotate, true ) +
|
translate( interpolatedStep.translate ),
|
transitionDuration: "0ms",
|
transitionDelay: "0ms"
|
} );
|
};
|
|
// Teardown impress
|
// Resets the DOM to the state it was before impress().init() was called.
|
// (If you called impress(rootId).init() for multiple different rootId's, then you must
|
// also call tear() once for each of them.)
|
var tear = function() {
|
lib.gc.teardown();
|
delete roots[ "impress-root-" + rootId ];
|
};
|
|
// Adding some useful classes to step elements.
|
//
|
// All the steps that have not been shown yet are given `future` class.
|
// When the step is entered the `future` class is removed and the `present`
|
// class is given. When the step is left `present` class is replaced with
|
// `past` class.
|
//
|
// So every step element is always in one of three possible states:
|
// `future`, `present` and `past`.
|
//
|
// There classes can be used in CSS to style different types of steps.
|
// For example the `present` class can be used to trigger some custom
|
// animations when step is shown.
|
lib.gc.addEventListener( root, "impress:init", function() {
|
|
// STEP CLASSES
|
steps.forEach( function( step ) {
|
step.classList.add( "future" );
|
} );
|
|
lib.gc.addEventListener( root, "impress:stepenter", function( event ) {
|
event.target.classList.remove( "past" );
|
event.target.classList.remove( "future" );
|
event.target.classList.add( "present" );
|
}, false );
|
|
lib.gc.addEventListener( root, "impress:stepleave", function( event ) {
|
event.target.classList.remove( "present" );
|
event.target.classList.add( "past" );
|
}, false );
|
|
}, false );
|
|
// Adding hash change support.
|
lib.gc.addEventListener( root, "impress:init", function() {
|
|
// Last hash detected
|
var lastHash = "";
|
|
// `#/step-id` is used instead of `#step-id` to prevent default browser
|
// scrolling to element in hash.
|
//
|
// And it has to be set after animation finishes, because in Chrome it
|
// makes transtion laggy.
|
// BUG: http://code.google.com/p/chromium/issues/detail?id=62820
|
lib.gc.addEventListener( root, "impress:stepenter", function( event ) {
|
window.location.hash = lastHash = "#/" + event.target.id;
|
}, false );
|
|
lib.gc.addEventListener( window, "hashchange", function() {
|
|
// When the step is entered hash in the location is updated
|
// (just few lines above from here), so the hash change is
|
// triggered and we would call `goto` again on the same element.
|
//
|
// To avoid this we store last entered hash and compare.
|
if ( window.location.hash !== lastHash ) {
|
goto( lib.util.getElementFromHash() );
|
}
|
}, false );
|
|
// START
|
// by selecting step defined in url or first step of the presentation
|
goto( lib.util.getElementFromHash() || steps[ 0 ], 0 );
|
}, false );
|
|
body.classList.add( "impress-disabled" );
|
|
// Store and return API for given impress.js root element
|
return ( roots[ "impress-root-" + rootId ] = {
|
init: init,
|
goto: goto,
|
next: next,
|
prev: prev,
|
swipe: swipe,
|
tear: tear,
|
lib: lib
|
} );
|
|
};
|
|
// Flag that can be used in JS to check if browser have passed the support test
|
impress.supported = impressSupported;
|
|
// ADD and INIT LIBRARIES
|
// Library factories are defined in src/lib/*.js, and register themselves by calling
|
// impress.addLibraryFactory(libraryFactoryObject). They're stored here, and used to augment
|
// the API with library functions when client calls impress(rootId).
|
// See src/lib/README.md for clearer example.
|
// (Advanced usage: For different values of rootId, a different instance of the libaries are
|
// generated, in case they need to hold different state for different root elements.)
|
var libraryFactories = {};
|
impress.addLibraryFactory = function( obj ) {
|
for ( var libname in obj ) {
|
if ( obj.hasOwnProperty( libname ) ) {
|
libraryFactories[ libname ] = obj[ libname ];
|
}
|
}
|
};
|
|
// Call each library factory, and return the lib object that is added to the api.
|
var initLibraries = function( rootId ) { //jshint ignore:line
|
var lib = {};
|
for ( var libname in libraryFactories ) {
|
if ( libraryFactories.hasOwnProperty( libname ) ) {
|
if ( lib[ libname ] !== undefined ) {
|
throw "impress.js ERROR: Two libraries both tried to use libname: " + libname;
|
}
|
lib[ libname ] = libraryFactories[ libname ]( rootId );
|
}
|
}
|
return lib;
|
};
|
|
// `addPreInitPlugin` allows plugins to register a function that should
|
// be run (synchronously) at the beginning of init, before
|
// impress().init() itself executes.
|
impress.addPreInitPlugin = function( plugin, weight ) {
|
weight = parseInt( weight ) || 10;
|
if ( weight <= 0 ) {
|
throw "addPreInitPlugin: weight must be a positive integer";
|
}
|
|
if ( preInitPlugins[ weight ] === undefined ) {
|
preInitPlugins[ weight ] = [];
|
}
|
preInitPlugins[ weight ].push( plugin );
|
};
|
|
// Called at beginning of init, to execute all pre-init plugins.
|
var execPreInitPlugins = function( root ) { //jshint ignore:line
|
for ( var i = 0; i < preInitPlugins.length; i++ ) {
|
var thisLevel = preInitPlugins[ i ];
|
if ( thisLevel !== undefined ) {
|
for ( var j = 0; j < thisLevel.length; j++ ) {
|
thisLevel[ j ]( root );
|
}
|
}
|
}
|
};
|
|
// `addPreStepLeavePlugin` allows plugins to register a function that should
|
// be run (synchronously) at the beginning of goto()
|
impress.addPreStepLeavePlugin = function( plugin, weight ) { //jshint ignore:line
|
weight = parseInt( weight ) || 10;
|
if ( weight <= 0 ) {
|
throw "addPreStepLeavePlugin: weight must be a positive integer";
|
}
|
|
if ( preStepLeavePlugins[ weight ] === undefined ) {
|
preStepLeavePlugins[ weight ] = [];
|
}
|
preStepLeavePlugins[ weight ].push( plugin );
|
};
|
|
// Called at beginning of goto(), to execute all preStepLeave plugins.
|
var execPreStepLeavePlugins = function( event ) { //jshint ignore:line
|
for ( var i = 0; i < preStepLeavePlugins.length; i++ ) {
|
var thisLevel = preStepLeavePlugins[ i ];
|
if ( thisLevel !== undefined ) {
|
for ( var j = 0; j < thisLevel.length; j++ ) {
|
if ( thisLevel[ j ]( event ) === false ) {
|
|
// If a plugin returns false, the stepleave event (and related transition)
|
// is aborted
|
return false;
|
}
|
}
|
}
|
}
|
};
|
|
} )( document, window );
|
|
// THAT'S ALL FOLKS!
|
//
|
// Thanks for reading it all.
|
// Or thanks for scrolling down and reading the last part.
|
//
|
// I've learnt a lot when building impress.js and I hope this code and comments
|
// will help somebody learn at least some part of it.
|
|
/**
|
* Garbage collection utility
|
*
|
* This library allows plugins to add elements and event listeners they add to the DOM. The user
|
* can call `impress().lib.gc.teardown()` to cause all of them to be removed from DOM, so that
|
* the document is in the state it was before calling `impress().init()`.
|
*
|
* In addition to just adding elements and event listeners to the garbage collector, plugins
|
* can also register callback functions to do arbitrary cleanup upon teardown.
|
*
|
* Henrik Ingo (c) 2016
|
* MIT License
|
*/
|
|
( function( document, window ) {
|
"use strict";
|
var roots = [];
|
var rootsCount = 0;
|
var startingState = { roots: [] };
|
|
var libraryFactory = function( rootId ) {
|
if ( roots[ rootId ] ) {
|
return roots[ rootId ];
|
}
|
|
// Per root global variables (instance variables?)
|
var elementList = [];
|
var eventListenerList = [];
|
var callbackList = [];
|
|
recordStartingState( rootId );
|
|
// LIBRARY FUNCTIONS
|
// Definitions of the library functions we return as an object at the end
|
|
// `pushElement` adds a DOM element to the gc stack
|
var pushElement = function( element ) {
|
elementList.push( element );
|
};
|
|
// `appendChild` is a convenience wrapper that combines DOM appendChild with gc.pushElement
|
var appendChild = function( parent, element ) {
|
parent.appendChild( element );
|
pushElement( element );
|
};
|
|
// `pushEventListener` adds an event listener to the gc stack
|
var pushEventListener = function( target, type, listenerFunction ) {
|
eventListenerList.push( { target:target, type:type, listener:listenerFunction } );
|
};
|
|
// `addEventListener` combines DOM addEventListener with gc.pushEventListener
|
var addEventListener = function( target, type, listenerFunction ) {
|
target.addEventListener( type, listenerFunction );
|
pushEventListener( target, type, listenerFunction );
|
};
|
|
// `pushCallback` If the above utilities are not enough, plugins can add their own callback
|
// function to do arbitrary things.
|
var pushCallback = function( callback ) {
|
callbackList.push( callback );
|
};
|
pushCallback( function( rootId ) { resetStartingState( rootId ); } );
|
|
// `teardown` will
|
// - execute all callbacks in LIFO order
|
// - call `removeChild` on all DOM elements in LIFO order
|
// - call `removeEventListener` on all event listeners in LIFO order
|
// The goal of a teardown is to return to the same state that the DOM was before
|
// `impress().init()` was called.
|
var teardown = function() {
|
|
// Execute the callbacks in LIFO order
|
var i; // Needed by jshint
|
for ( i = callbackList.length - 1; i >= 0; i-- ) {
|
callbackList[ i ]( rootId );
|
}
|
callbackList = [];
|
for ( i = 0; i < elementList.length; i++ ) {
|
elementList[ i ].parentElement.removeChild( elementList[ i ] );
|
}
|
elementList = [];
|
for ( i = 0; i < eventListenerList.length; i++ ) {
|
var target = eventListenerList[ i ].target;
|
var type = eventListenerList[ i ].type;
|
var listener = eventListenerList[ i ].listener;
|
target.removeEventListener( type, listener );
|
}
|
};
|
|
var lib = {
|
pushElement: pushElement,
|
appendChild: appendChild,
|
pushEventListener: pushEventListener,
|
addEventListener: addEventListener,
|
pushCallback: pushCallback,
|
teardown: teardown
|
};
|
roots[ rootId ] = lib;
|
rootsCount++;
|
return lib;
|
};
|
|
// Let impress core know about the existence of this library
|
window.impress.addLibraryFactory( { gc: libraryFactory } );
|
|
// CORE INIT
|
// The library factory (gc(rootId)) is called at the beginning of impress(rootId).init()
|
// For the purposes of teardown(), we can use this as an opportunity to save the state
|
// of a few things in the DOM in their virgin state, before impress().init() did anything.
|
// Note: These could also be recorded by the code in impress.js core as these values
|
// are changed, but in an effort to not deviate too much from upstream, I'm adding
|
// them here rather than the core itself.
|
var recordStartingState = function( rootId ) {
|
startingState.roots[ rootId ] = {};
|
startingState.roots[ rootId ].steps = [];
|
|
// Record whether the steps have an id or not
|
var steps = document.getElementById( rootId ).querySelectorAll( ".step" );
|
for ( var i = 0; i < steps.length; i++ ) {
|
var el = steps[ i ];
|
startingState.roots[ rootId ].steps.push( {
|
el: el,
|
id: el.getAttribute( "id" )
|
} );
|
}
|
|
// In the rare case of multiple roots, the following is changed on first init() and
|
// reset at last tear().
|
if ( rootsCount === 0 ) {
|
startingState.body = {};
|
|
// It is customary for authors to set body.class="impress-not-supported" as a starting
|
// value, which can then be removed by impress().init(). But it is not required.
|
// Remember whether it was there or not.
|
if ( document.body.classList.contains( "impress-not-supported" ) ) {
|
startingState.body.impressNotSupported = true;
|
} else {
|
startingState.body.impressNotSupported = false;
|
}
|
|
// If there's a <meta name="viewport"> element, its contents will be overwritten by init
|
var metas = document.head.querySelectorAll( "meta" );
|
for ( i = 0; i < metas.length; i++ ) {
|
var m = metas[ i ];
|
if ( m.name === "viewport" ) {
|
startingState.meta = m.content;
|
}
|
}
|
}
|
};
|
|
// CORE TEARDOWN
|
var resetStartingState = function( rootId ) {
|
|
// Reset body element
|
document.body.classList.remove( "impress-enabled" );
|
document.body.classList.remove( "impress-disabled" );
|
|
var root = document.getElementById( rootId );
|
var activeId = root.querySelector( ".active" ).id;
|
document.body.classList.remove( "impress-on-" + activeId );
|
|
document.documentElement.style.height = "";
|
document.body.style.height = "";
|
document.body.style.overflow = "";
|
|
// Remove style values from the root and step elements
|
// Note: We remove the ones set by impress.js core. Otoh, we didn't preserve any original
|
// values. A more sophisticated implementation could keep track of original values and then
|
// reset those.
|
var steps = root.querySelectorAll( ".step" );
|
for ( var i = 0; i < steps.length; i++ ) {
|
steps[ i ].classList.remove( "future" );
|
steps[ i ].classList.remove( "past" );
|
steps[ i ].classList.remove( "present" );
|
steps[ i ].classList.remove( "active" );
|
steps[ i ].style.position = "";
|
steps[ i ].style.transform = "";
|
steps[ i ].style[ "transform-style" ] = "";
|
}
|
root.style.position = "";
|
root.style[ "transform-origin" ] = "";
|
root.style.transition = "";
|
root.style[ "transform-style" ] = "";
|
root.style.top = "";
|
root.style.left = "";
|
root.style.transform = "";
|
|
// Reset id of steps ("step-1" id's are auto generated)
|
steps = startingState.roots[ rootId ].steps;
|
var step;
|
while ( step = steps.pop() ) {
|
if ( step.id === null ) {
|
step.el.removeAttribute( "id" );
|
} else {
|
step.el.setAttribute( "id", step.id );
|
}
|
}
|
delete startingState.roots[ rootId ];
|
|
// Move step div elements away from canvas, then delete canvas
|
// Note: There's an implicit assumption here that the canvas div is the only child element
|
// of the root div. If there would be something else, it's gonna be lost.
|
var canvas = root.firstChild;
|
var canvasHTML = canvas.innerHTML;
|
root.innerHTML = canvasHTML;
|
|
if ( roots[ rootId ] !== undefined ) {
|
delete roots[ rootId ];
|
rootsCount--;
|
}
|
if ( rootsCount === 0 ) {
|
|
// In the rare case that more than one impress root elements were initialized, these
|
// are only reset when all are uninitialized.
|
document.body.classList.remove( "impress-supported" );
|
if ( startingState.body.impressNotSupported ) {
|
document.body.classList.add( "impress-not-supported" );
|
}
|
|
// We need to remove or reset the meta element inserted by impress.js
|
var metas = document.head.querySelectorAll( "meta" );
|
for ( i = 0; i < metas.length; i++ ) {
|
var m = metas[ i ];
|
if ( m.name === "viewport" ) {
|
if ( startingState.meta !== undefined ) {
|
m.content = startingState.meta;
|
} else {
|
m.parentElement.removeChild( m );
|
}
|
}
|
}
|
}
|
|
};
|
|
} )( document, window );
|
|
/**
|
* Common utility functions
|
*
|
* Copyright 2011-2012 Bartek Szopka (@bartaz)
|
* Henrik Ingo (c) 2016
|
* MIT License
|
*/
|
|
( function( document, window ) {
|
"use strict";
|
var roots = [];
|
|
var libraryFactory = function( rootId ) {
|
if ( roots[ rootId ] ) {
|
return roots[ rootId ];
|
}
|
|
// `$` returns first element for given CSS `selector` in the `context` of
|
// the given element or whole document.
|
var $ = function( selector, context ) {
|
context = context || document;
|
return context.querySelector( selector );
|
};
|
|
// `$$` return an array of elements for given CSS `selector` in the `context` of
|
// the given element or whole document.
|
var $$ = function( selector, context ) {
|
context = context || document;
|
return arrayify( context.querySelectorAll( selector ) );
|
};
|
|
// `arrayify` takes an array-like object and turns it into real Array
|
// to make all the Array.prototype goodness available.
|
var arrayify = function( a ) {
|
return [].slice.call( a );
|
};
|
|
// `byId` returns element with given `id` - you probably have guessed that ;)
|
var byId = function( id ) {
|
return document.getElementById( id );
|
};
|
|
// `getElementFromHash` returns an element located by id from hash part of
|
// window location.
|
var getElementFromHash = function() {
|
|
// Get id from url # by removing `#` or `#/` from the beginning,
|
// so both "fallback" `#slide-id` and "enhanced" `#/slide-id` will work
|
return byId( window.location.hash.replace( /^#\/?/, "" ) );
|
};
|
|
// Throttling function calls, by Remy Sharp
|
// http://remysharp.com/2010/07/21/throttling-function-calls/
|
var throttle = function( fn, delay ) {
|
var timer = null;
|
return function() {
|
var context = this, args = arguments;
|
window.clearTimeout( timer );
|
timer = window.setTimeout( function() {
|
fn.apply( context, args );
|
}, delay );
|
};
|
};
|
|
// `toNumber` takes a value given as `numeric` parameter and tries to turn
|
// it into a number. If it is not possible it returns 0 (or other value
|
// given as `fallback`).
|
var toNumber = function( numeric, fallback ) {
|
return isNaN( numeric ) ? ( fallback || 0 ) : Number( numeric );
|
};
|
|
// `triggerEvent` builds a custom DOM event with given `eventName` and `detail` data
|
// and triggers it on element given as `el`.
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( "CustomEvent" );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
var lib = {
|
$: $,
|
$$: $$,
|
arrayify: arrayify,
|
byId: byId,
|
getElementFromHash: getElementFromHash,
|
throttle: throttle,
|
toNumber: toNumber,
|
triggerEvent: triggerEvent
|
};
|
roots[ rootId ] = lib;
|
return lib;
|
};
|
|
// Let impress core know about the existence of this library
|
window.impress.addLibraryFactory( { util: libraryFactory } );
|
|
} )( document, window );
|
|
/**
|
* Autoplay plugin - Automatically advance slideshow after N seconds
|
*
|
* Copyright 2016 Henrik Ingo, henrik.ingo@avoinelama.fi
|
* Released under the MIT license.
|
*/
|
/* global clearTimeout, setTimeout, document */
|
|
( function( document ) {
|
"use strict";
|
|
var autoplayDefault = 0;
|
var currentStepTimeout = 0;
|
var api = null;
|
var timeoutHandle = null;
|
var root = null;
|
var util;
|
|
// On impress:init, check whether there is a default setting, as well as
|
// handle step-1.
|
document.addEventListener( "impress:init", function( event ) {
|
util = event.detail.api.lib.util;
|
|
// Getting API from event data instead of global impress().init().
|
// You don't even need to know what is the id of the root element
|
// or anything. `impress:init` event data gives you everything you
|
// need to control the presentation that was just initialized.
|
api = event.detail.api;
|
root = event.target;
|
|
// Element attributes starting with "data-", become available under
|
// element.dataset. In addition hyphenized words become camelCased.
|
var data = root.dataset;
|
|
if ( data.autoplay ) {
|
autoplayDefault = util.toNumber( data.autoplay, 0 );
|
}
|
|
var toolbar = document.querySelector( "#impress-toolbar" );
|
if ( toolbar ) {
|
addToolbarButton( toolbar );
|
}
|
|
api.lib.gc.pushCallback( function() {
|
clearTimeout( timeoutHandle );
|
} );
|
|
// Note that right after impress:init event, also impress:stepenter is
|
// triggered for the first slide, so that's where code flow continues.
|
}, false );
|
|
// If default autoplay time was defined in the presentation root, or
|
// in this step, set timeout.
|
var reloadTimeout = function( event ) {
|
var step = event.target;
|
currentStepTimeout = util.toNumber( step.dataset.autoplay, autoplayDefault );
|
if ( status === "paused" ) {
|
setAutoplayTimeout( 0 );
|
} else {
|
setAutoplayTimeout( currentStepTimeout );
|
}
|
};
|
|
document.addEventListener( "impress:stepenter", function( event ) {
|
reloadTimeout( event );
|
}, false );
|
|
document.addEventListener( "impress:substep:stepleaveaborted", function( event ) {
|
reloadTimeout( event );
|
}, false );
|
|
/**
|
* Set timeout after which we move to next() step.
|
*/
|
var setAutoplayTimeout = function( timeout ) {
|
if ( timeoutHandle ) {
|
clearTimeout( timeoutHandle );
|
}
|
|
if ( timeout > 0 ) {
|
timeoutHandle = setTimeout( function() { api.next(); }, timeout * 1000 );
|
}
|
setButtonText();
|
};
|
|
/*** Toolbar plugin integration *******************************************/
|
var status = "not clicked";
|
var toolbarButton = null;
|
|
// Copied from core impress.js. Good candidate for moving to a utilities collection.
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( "CustomEvent" );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
var makeDomElement = function( html ) {
|
var tempDiv = document.createElement( "div" );
|
tempDiv.innerHTML = html;
|
return tempDiv.firstChild;
|
};
|
|
var toggleStatus = function() {
|
if ( currentStepTimeout > 0 && status !== "paused" ) {
|
status = "paused";
|
} else {
|
status = "playing";
|
}
|
};
|
|
var getButtonText = function() {
|
if ( currentStepTimeout > 0 && status !== "paused" ) {
|
return "||"; // Pause
|
} else {
|
return "▶"; // Play
|
}
|
};
|
|
var setButtonText = function() {
|
if ( toolbarButton ) {
|
|
// Keep button size the same even if label content is changing
|
var buttonWidth = toolbarButton.offsetWidth;
|
var buttonHeight = toolbarButton.offsetHeight;
|
toolbarButton.innerHTML = getButtonText();
|
if ( !toolbarButton.style.width ) {
|
toolbarButton.style.width = buttonWidth + "px";
|
}
|
if ( !toolbarButton.style.height ) {
|
toolbarButton.style.height = buttonHeight + "px";
|
}
|
}
|
};
|
|
var addToolbarButton = function( toolbar ) {
|
var html = '<button id="impress-autoplay-playpause" ' + // jshint ignore:line
|
'title="Autoplay" class="impress-autoplay">' + // jshint ignore:line
|
getButtonText() + "</button>"; // jshint ignore:line
|
toolbarButton = makeDomElement( html );
|
toolbarButton.addEventListener( "click", function() {
|
toggleStatus();
|
if ( status === "playing" ) {
|
if ( autoplayDefault === 0 ) {
|
autoplayDefault = 7;
|
}
|
if ( currentStepTimeout === 0 ) {
|
currentStepTimeout = autoplayDefault;
|
}
|
setAutoplayTimeout( currentStepTimeout );
|
} else if ( status === "paused" ) {
|
setAutoplayTimeout( 0 );
|
}
|
} );
|
|
triggerEvent( toolbar, "impress:toolbar:appendChild",
|
{ group: 10, element: toolbarButton } );
|
};
|
|
} )( document );
|
|
/**
|
* Blackout plugin
|
*
|
* Press Ctrl+b to hide all slides, and Ctrl+b again to show them.
|
* Also navigating to a different slide will show them again (impress:stepleave).
|
*
|
* Copyright 2014 @Strikeskids
|
* Released under the MIT license.
|
*/
|
/* global document */
|
|
( function( document ) {
|
"use strict";
|
|
var canvas = null;
|
var blackedOut = false;
|
|
// While waiting for a shared library of utilities, copying these 2 from main impress.js
|
var css = function( el, props ) {
|
var key, pkey;
|
for ( key in props ) {
|
if ( props.hasOwnProperty( key ) ) {
|
pkey = pfx( key );
|
if ( pkey !== null ) {
|
el.style[ pkey ] = props[ key ];
|
}
|
}
|
}
|
return el;
|
};
|
|
var pfx = ( function() {
|
|
var style = document.createElement( "dummy" ).style,
|
prefixes = "Webkit Moz O ms Khtml".split( " " ),
|
memory = {};
|
|
return function( prop ) {
|
if ( typeof memory[ prop ] === "undefined" ) {
|
|
var ucProp = prop.charAt( 0 ).toUpperCase() + prop.substr( 1 ),
|
props = ( prop + " " + prefixes.join( ucProp + " " ) + ucProp ).split( " " );
|
|
memory[ prop ] = null;
|
for ( var i in props ) {
|
if ( style[ props[ i ] ] !== undefined ) {
|
memory[ prop ] = props[ i ];
|
break;
|
}
|
}
|
|
}
|
|
return memory[ prop ];
|
};
|
|
} )();
|
|
var removeBlackout = function() {
|
if ( blackedOut ) {
|
css( canvas, {
|
display: "block"
|
} );
|
blackedOut = false;
|
}
|
};
|
|
var blackout = function() {
|
if ( blackedOut ) {
|
removeBlackout();
|
} else {
|
css( canvas, {
|
display: ( blackedOut = !blackedOut ) ? "none" : "block"
|
} );
|
blackedOut = true;
|
}
|
};
|
|
// Wait for impress.js to be initialized
|
document.addEventListener( "impress:init", function( event ) {
|
var api = event.detail.api;
|
var root = event.target;
|
canvas = root.firstElementChild;
|
var gc = api.lib.gc;
|
|
gc.addEventListener( document, "keydown", function( event ) {
|
if ( event.keyCode === 66 ) {
|
event.preventDefault();
|
if ( !blackedOut ) {
|
blackout();
|
} else {
|
removeBlackout();
|
}
|
}
|
}, false );
|
|
gc.addEventListener( document, "keyup", function( event ) {
|
if ( event.keyCode === 66 ) {
|
event.preventDefault();
|
}
|
}, false );
|
|
}, false );
|
|
document.addEventListener( "impress:stepleave", function() {
|
removeBlackout();
|
}, false );
|
|
} )( document );
|
|
|
/**
|
* Extras Plugin
|
*
|
* This plugin performs initialization (like calling mermaid.initialize())
|
* for the extras/ plugins if they are loaded into a presentation.
|
*
|
* See README.md for details.
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
/* global markdown, hljs, mermaid, impress, document, window */
|
|
( function( document, window ) {
|
"use strict";
|
|
var preInit = function() {
|
if ( window.markdown ) {
|
|
// Unlike the other extras, Markdown.js doesn't by default do anything in
|
// particular. We do it ourselves here.
|
// In addition, we use "-----" as a delimiter for new slide.
|
|
// Query all .markdown elements and translate to HTML
|
var markdownDivs = document.querySelectorAll( ".markdown" );
|
for ( var idx = 0; idx < markdownDivs.length; idx++ ) {
|
var element = markdownDivs[ idx ];
|
|
var slides = element.textContent.split( /^-----$/m );
|
var i = slides.length - 1;
|
element.innerHTML = markdown.toHTML( slides[ i ] );
|
|
// If there's an id, unset it for last, and all other, elements,
|
// and then set it for the first.
|
var id = null;
|
if ( element.id ) {
|
id = element.id;
|
element.id = "";
|
}
|
i--;
|
while ( i >= 0 ) {
|
var newElement = element.cloneNode( false );
|
newElement.innerHTML = markdown.toHTML( slides[ i ] );
|
element.parentNode.insertBefore( newElement, element );
|
element = newElement;
|
i--;
|
}
|
if ( id !== null ) {
|
element.id = id;
|
}
|
}
|
} // Markdown
|
|
if ( window.hljs ) {
|
hljs.initHighlightingOnLoad();
|
}
|
|
if ( window.mermaid ) {
|
mermaid.initialize( { startOnLoad:true } );
|
}
|
};
|
|
// Register the plugin to be called in pre-init phase
|
// Note: Markdown.js should run early/first, because it creates new div elements.
|
// So add this with a lower-than-default weight.
|
impress.addPreInitPlugin( preInit, 1 );
|
|
} )( document, window );
|
|
|
/**
|
* Form support
|
*
|
* Functionality to better support use of input, textarea, button... elements in a presentation.
|
*
|
* This plugin does two things:
|
*
|
* Set stopPropagation on any element that might take text input. This allows users to type, for
|
* example, the letter 'P' into a form field, without causing the presenter console to spring up.
|
*
|
* On impress:stepleave, de-focus any potentially active
|
* element. This is to prevent the focus from being left in a form element that is no longer visible
|
* in the window, and user therefore typing garbage into the form.
|
*
|
* TODO: Currently it is not possible to use TAB to navigate between form elements. Impress.js, and
|
* in particular the navigation plugin, unfortunately must fully take control of the tab key,
|
* otherwise a user could cause the browser to scroll to a link or button that's not on the current
|
* step. However, it could be possible to allow tab navigation between form elements, as long as
|
* they are on the active step. This is a topic for further study.
|
*
|
* Copyright 2016 Henrik Ingo
|
* MIT License
|
*/
|
/* global document */
|
( function( document ) {
|
"use strict";
|
var root;
|
var api;
|
|
document.addEventListener( "impress:init", function( event ) {
|
root = event.target;
|
api = event.detail.api;
|
var gc = api.lib.gc;
|
|
var selectors = [ "input[type=text]", "textarea", "select", "[contenteditable=true]" ];
|
for ( var selector of selectors ) {
|
var elements = document.querySelectorAll( selector );
|
if ( !elements ) {
|
continue;
|
}
|
|
for ( var i = 0; i < elements.length; i++ ) {
|
var e = elements[ i ];
|
gc.addEventListener( e, "keydown", function( event ) {
|
event.stopPropagation();
|
} );
|
gc.addEventListener( e, "keyup", function( event ) {
|
event.stopPropagation();
|
} );
|
}
|
}
|
}, false );
|
|
document.addEventListener( "impress:stepleave", function() {
|
document.activeElement.blur();
|
}, false );
|
|
} )( document );
|
|
|
/**
|
* Goto Plugin
|
*
|
* The goto plugin is a pre-stepleave plugin. It is executed before impress:stepleave,
|
* and will alter the destination where to transition next.
|
*
|
* Example:
|
*
|
* <!-- When leaving this step, go directly to "step-5" -->
|
* <div class="step" data-goto="step-5">
|
*
|
* <!-- When leaving this step with next(), go directly to "step-5", instead of next step.
|
* If moving backwards to previous step - e.g. prev() instead of next() -
|
* then go to "step-1". -->
|
* <div class="step" data-goto-next="step-5" data-goto-prev="step-1">
|
*
|
* <!-- data-goto-key-list and data-goto-next-list allow you to build advanced non-linear
|
* navigation. -->
|
* <div class="step"
|
* data-goto-key-list="ArrowUp ArrowDown ArrowRight ArrowLeft"
|
* data-goto-next-list="step-4 step-3 step-2 step-5">
|
*
|
* See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values for a table
|
* of what strings to use for each key.
|
*
|
* Copyright 2016-2017 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
/* global window, document, impress */
|
|
( function( document, window ) {
|
"use strict";
|
var lib;
|
|
document.addEventListener( "impress:init", function( event ) {
|
lib = event.detail.api.lib;
|
}, false );
|
|
var isNumber = function( numeric ) {
|
return !isNaN( numeric );
|
};
|
|
var goto = function( event ) {
|
if ( ( !event ) || ( !event.target ) ) {
|
return;
|
}
|
|
var data = event.target.dataset;
|
var steps = document.querySelectorAll( ".step" );
|
|
// Data-goto-key-list="" & data-goto-next-list="" //////////////////////////////////////////
|
if ( data.gotoKeyList !== undefined &&
|
data.gotoNextList !== undefined &&
|
event.origEvent !== undefined &&
|
event.origEvent.key !== undefined ) {
|
var keylist = data.gotoKeyList.split( " " );
|
var nextlist = data.gotoNextList.split( " " );
|
|
if ( keylist.length !== nextlist.length ) {
|
window.console.log(
|
"impress goto plugin: data-goto-key-list and data-goto-next-list don't match:"
|
);
|
window.console.log( keylist );
|
window.console.log( nextlist );
|
|
// Don't return, allow the other categories to work despite this error
|
} else {
|
var index = keylist.indexOf( event.origEvent.key );
|
if ( index >= 0 ) {
|
var next = nextlist[ index ];
|
if ( isNumber( next ) ) {
|
event.detail.next = steps[ next ];
|
|
// If the new next element has its own transitionDuration, we're responsible
|
// for setting that on the event as well
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration,
|
event.detail.transitionDuration
|
);
|
return;
|
} else {
|
var newTarget = document.getElementById( next );
|
if ( newTarget && newTarget.classList.contains( "step" ) ) {
|
event.detail.next = newTarget;
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration,
|
event.detail.transitionDuration
|
);
|
return;
|
} else {
|
window.console.log( "impress goto plugin: " + next +
|
" is not a step in this impress presentation." );
|
}
|
}
|
}
|
}
|
}
|
|
// Data-goto-next="" & data-goto-prev="" ///////////////////////////////////////////////////
|
|
// Handle event.target data-goto-next attribute
|
if ( isNumber( data.gotoNext ) && event.detail.reason === "next" ) {
|
event.detail.next = steps[ data.gotoNext ];
|
|
// If the new next element has its own transitionDuration, we're responsible for setting
|
// that on the event as well
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
return;
|
}
|
if ( data.gotoNext && event.detail.reason === "next" ) {
|
var newTarget = document.getElementById( data.gotoNext ); // jshint ignore:line
|
if ( newTarget && newTarget.classList.contains( "step" ) ) {
|
event.detail.next = newTarget;
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration,
|
event.detail.transitionDuration
|
);
|
return;
|
} else {
|
window.console.log( "impress goto plugin: " + data.gotoNext +
|
" is not a step in this impress presentation." );
|
}
|
}
|
|
// Handle event.target data-goto-prev attribute
|
if ( isNumber( data.gotoPrev ) && event.detail.reason === "prev" ) {
|
event.detail.next = steps[ data.gotoPrev ];
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
return;
|
}
|
if ( data.gotoPrev && event.detail.reason === "prev" ) {
|
var newTarget = document.getElementById( data.gotoPrev ); // jshint ignore:line
|
if ( newTarget && newTarget.classList.contains( "step" ) ) {
|
event.detail.next = newTarget;
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
return;
|
} else {
|
window.console.log( "impress goto plugin: " + data.gotoPrev +
|
" is not a step in this impress presentation." );
|
}
|
}
|
|
// Data-goto="" ///////////////////////////////////////////////////////////////////////////
|
|
// Handle event.target data-goto attribute
|
if ( isNumber( data.goto ) ) {
|
event.detail.next = steps[ data.goto ];
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
return;
|
}
|
if ( data.goto ) {
|
var newTarget = document.getElementById( data.goto ); // jshint ignore:line
|
if ( newTarget && newTarget.classList.contains( "step" ) ) {
|
event.detail.next = newTarget;
|
event.detail.transitionDuration = lib.util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
return;
|
} else {
|
window.console.log( "impress goto plugin: " + data.goto +
|
" is not a step in this impress presentation." );
|
}
|
}
|
};
|
|
// Register the plugin to be called in pre-stepleave phase
|
impress.addPreStepLeavePlugin( goto );
|
|
} )( document, window );
|
|
|
/**
|
* Help popup plugin
|
*
|
* Example:
|
*
|
* <!-- Show a help popup at start, or if user presses "H" -->
|
* <div id="impress-help"></div>
|
*
|
* For developers:
|
*
|
* Typical use for this plugin, is for plugins that support some keypress, to add a line
|
* to the help popup produced by this plugin. For example "P: Presenter console".
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
/* global window, document */
|
|
( function( document, window ) {
|
"use strict";
|
var rows = [];
|
var timeoutHandle;
|
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( "CustomEvent" );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
var renderHelpDiv = function() {
|
var helpDiv = document.getElementById( "impress-help" );
|
if ( helpDiv ) {
|
var html = [];
|
for ( var row in rows ) {
|
for ( var arrayItem in row ) {
|
html.push( rows[ row ][ arrayItem ] );
|
}
|
}
|
if ( html ) {
|
helpDiv.innerHTML = "<table>\n" + html.join( "\n" ) + "</table>\n";
|
}
|
}
|
};
|
|
var toggleHelp = function() {
|
var helpDiv = document.getElementById( "impress-help" );
|
if ( !helpDiv ) {
|
return;
|
}
|
|
if ( helpDiv.style.display === "block" ) {
|
helpDiv.style.display = "none";
|
} else {
|
helpDiv.style.display = "block";
|
window.clearTimeout( timeoutHandle );
|
}
|
};
|
|
document.addEventListener( "keyup", function( event ) {
|
|
if ( event.keyCode === 72 ) { // "h"
|
event.preventDefault();
|
toggleHelp();
|
}
|
}, false );
|
|
// API
|
// Other plugins can add help texts, typically if they support an action on a keypress.
|
/**
|
* Add a help text to the help popup.
|
*
|
* :param: e.detail.command Example: "H"
|
* :param: e.detail.text Example: "Show this help."
|
* :param: e.detail.row Row index from 0 to 9 where to place this help text. Example: 0
|
*/
|
document.addEventListener( "impress:help:add", function( e ) {
|
|
// The idea is for the sender of the event to supply a unique row index, used for sorting.
|
// But just in case two plugins would ever use the same row index, we wrap each row into
|
// its own array. If there are more than one entry for the same index, they are shown in
|
// first come, first serve ordering.
|
var rowIndex = e.detail.row;
|
if ( typeof rows[ rowIndex ] !== "object" || !rows[ rowIndex ].isArray ) {
|
rows[ rowIndex ] = [];
|
}
|
rows[ e.detail.row ].push( "<tr><td><strong>" + e.detail.command + "</strong></td><td>" +
|
e.detail.text + "</td></tr>" );
|
renderHelpDiv();
|
} );
|
|
document.addEventListener( "impress:init", function( e ) {
|
renderHelpDiv();
|
|
// At start, show the help for 7 seconds.
|
var helpDiv = document.getElementById( "impress-help" );
|
if ( helpDiv ) {
|
helpDiv.style.display = "block";
|
timeoutHandle = window.setTimeout( function() {
|
var helpDiv = document.getElementById( "impress-help" );
|
helpDiv.style.display = "none";
|
}, 7000 );
|
|
// Regster callback to empty the help div on teardown
|
var api = e.detail.api;
|
api.lib.gc.pushCallback( function() {
|
window.clearTimeout( timeoutHandle );
|
helpDiv.style.display = "";
|
helpDiv.innerHTML = "";
|
rows = [];
|
} );
|
}
|
|
// Use our own API to register the help text for "h"
|
triggerEvent( document, "impress:help:add",
|
{ command: "H", text: "Show this help", row: 0 } );
|
} );
|
|
} )( document, window );
|
|
|
/**
|
* Adds a presenter console to impress.js
|
*
|
* MIT Licensed, see license.txt.
|
*
|
* Copyright 2012, 2013, 2015 impress-console contributors (see README.txt)
|
*
|
* version: 1.3-dev
|
*
|
*/
|
|
// This file contains so much HTML, that we will just respectfully disagree about js
|
/* jshint quotmark:single */
|
/* global navigator, top, setInterval, clearInterval, document, window */
|
|
( function( document, window ) {
|
'use strict';
|
|
// TODO: Move this to src/lib/util.js
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( 'CustomEvent' );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
// Create Language object depending on browsers language setting
|
var lang;
|
switch ( navigator.language ) {
|
case 'de':
|
lang = {
|
'noNotes': '<div class="noNotes">Keine Notizen hierzu</div>',
|
'restart': 'Neustart',
|
'clickToOpen': 'Klicken um Sprecherkonsole zu öffnen',
|
'prev': 'zurück',
|
'next': 'weiter',
|
'loading': 'initalisiere',
|
'ready': 'Bereit',
|
'moving': 'in Bewegung',
|
'useAMPM': false
|
};
|
break;
|
case 'en': // jshint ignore:line
|
default : // jshint ignore:line
|
lang = {
|
'noNotes': '<div class="noNotes">No notes for this step</div>',
|
'restart': 'Restart',
|
'clickToOpen': 'Click to open speaker console',
|
'prev': 'Prev',
|
'next': 'Next',
|
'loading': 'Loading',
|
'ready': 'Ready',
|
'moving': 'Moving',
|
'useAMPM': false
|
};
|
break;
|
}
|
|
// Settings to set iframe in speaker console
|
const preViewDefaultFactor = 0.7;
|
const preViewMinimumFactor = 0.5;
|
const preViewGap = 4;
|
|
// This is the default template for the speaker console window
|
const consoleTemplate = '<!DOCTYPE html>' +
|
'<html id="impressconsole"><head>' +
|
|
// Order is important: If user provides a cssFile, those will win, because they're later
|
'{{cssStyle}}' +
|
'{{cssLink}}' +
|
'</head><body>' +
|
'<div id="console">' +
|
'<div id="views">' +
|
'<iframe id="slideView" scrolling="no"></iframe>' +
|
'<iframe id="preView" scrolling="no"></iframe>' +
|
'<div id="blocker"></div>' +
|
'</div>' +
|
'<div id="notes"></div>' +
|
'</div>' +
|
'<div id="controls"> ' +
|
'<div id="prev"><a href="#" onclick="impress().prev(); return false;" />' +
|
'{{prev}}</a></div>' +
|
'<div id="next"><a href="#" onclick="impress().next(); return false;" />' +
|
'{{next}}</a></div>' +
|
'<div id="clock">--:--</div>' +
|
'<div id="timer" onclick="timerReset()">00m 00s</div>' +
|
'<div id="status">{{loading}}</div>' +
|
'</div>' +
|
'</body></html>';
|
|
// Default css location
|
var cssFileOldDefault = 'css/impressConsole.css';
|
var cssFile = undefined; // jshint ignore:line
|
|
// Css for styling iframs on the console
|
var cssFileIframeOldDefault = 'css/iframe.css';
|
var cssFileIframe = undefined; // jshint ignore:line
|
|
// All console windows, so that you can call impressConsole() repeatedly.
|
var allConsoles = {};
|
|
// Zero padding helper function:
|
var zeroPad = function( i ) {
|
return ( i < 10 ? '0' : '' ) + i;
|
};
|
|
// The console object
|
var impressConsole = window.impressConsole = function( rootId ) {
|
|
rootId = rootId || 'impress';
|
|
if ( allConsoles[ rootId ] ) {
|
return allConsoles[ rootId ];
|
}
|
|
// Root presentation elements
|
var root = document.getElementById( rootId );
|
|
var consoleWindow = null;
|
|
var nextStep = function() {
|
var classes = '';
|
var nextElement = document.querySelector( '.active' );
|
|
// Return to parents as long as there is no next sibling
|
while ( !nextElement.nextElementSibling && nextElement.parentNode ) {
|
nextElement = nextElement.parentNode;
|
}
|
nextElement = nextElement.nextElementSibling;
|
while ( nextElement ) {
|
classes = nextElement.attributes[ 'class' ];
|
if ( classes && classes.value.indexOf( 'step' ) !== -1 ) {
|
consoleWindow.document.getElementById( 'blocker' ).innerHTML = lang.next;
|
return nextElement;
|
}
|
|
if ( nextElement.firstElementChild ) { // First go into deep
|
nextElement = nextElement.firstElementChild;
|
} else {
|
|
// Go to next sibling or through parents until there is a next sibling
|
while ( !nextElement.nextElementSibling && nextElement.parentNode ) {
|
nextElement = nextElement.parentNode;
|
}
|
nextElement = nextElement.nextElementSibling;
|
}
|
}
|
|
// No next element. Pick the first
|
consoleWindow.document.getElementById( 'blocker' ).innerHTML = lang.restart;
|
return document.querySelector( '.step' );
|
};
|
|
// Sync the notes to the step
|
var onStepLeave = function() {
|
if ( consoleWindow ) {
|
|
// Set notes to next steps notes.
|
var newNotes = document.querySelector( '.active' ).querySelector( '.notes' );
|
if ( newNotes ) {
|
newNotes = newNotes.innerHTML;
|
} else {
|
newNotes = lang.noNotes;
|
}
|
consoleWindow.document.getElementById( 'notes' ).innerHTML = newNotes;
|
|
// Set the views
|
var baseURL = document.URL.substring( 0, document.URL.search( '#/' ) );
|
var slideSrc = baseURL + '#' + document.querySelector( '.active' ).id;
|
var preSrc = baseURL + '#' + nextStep().id;
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
|
// Setting them when they are already set causes glithes in Firefox, so check first:
|
if ( slideView.src !== slideSrc ) {
|
slideView.src = slideSrc;
|
}
|
var preView = consoleWindow.document.getElementById( 'preView' );
|
if ( preView.src !== preSrc ) {
|
preView.src = preSrc;
|
}
|
|
consoleWindow.document.getElementById( 'status' ).innerHTML =
|
'<span class="moving">' + lang.moving + '</span>';
|
}
|
};
|
|
// Sync the previews to the step
|
var onStepEnter = function() {
|
if ( consoleWindow ) {
|
|
// We do everything here again, because if you stopped the previos step to
|
// early, the onstepleave trigger is not called for that step, so
|
// we need this to sync things.
|
var newNotes = document.querySelector( '.active' ).querySelector( '.notes' );
|
if ( newNotes ) {
|
newNotes = newNotes.innerHTML;
|
} else {
|
newNotes = lang.noNotes;
|
}
|
var notes = consoleWindow.document.getElementById( 'notes' );
|
notes.innerHTML = newNotes;
|
notes.scrollTop = 0;
|
|
// Set the views
|
var baseURL = document.URL.substring( 0, document.URL.search( '#/' ) );
|
var slideSrc = baseURL + '#' + document.querySelector( '.active' ).id;
|
var preSrc = baseURL + '#' + nextStep().id;
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
|
// Setting them when they are already set causes glithes in Firefox, so check first:
|
if ( slideView.src !== slideSrc ) {
|
slideView.src = slideSrc;
|
}
|
var preView = consoleWindow.document.getElementById( 'preView' );
|
if ( preView.src !== preSrc ) {
|
preView.src = preSrc;
|
}
|
|
consoleWindow.document.getElementById( 'status' ).innerHTML =
|
'<span class="ready">' + lang.ready + '</span>';
|
}
|
};
|
|
// Sync substeps
|
var onSubstep = function( event ) {
|
if ( consoleWindow ) {
|
if ( event.detail.reason === 'next' ) {
|
onSubstepShow();
|
}
|
if ( event.detail.reason === 'prev' ) {
|
onSubstepHide();
|
}
|
}
|
};
|
|
var onSubstepShow = function() {
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
triggerEventInView( slideView, 'impress:substep:show' );
|
};
|
|
var onSubstepHide = function() {
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
triggerEventInView( slideView, 'impress:substep:hide' );
|
};
|
|
var triggerEventInView = function( frame, eventName, detail ) {
|
|
// Note: Unfortunately Chrome does not allow createEvent on file:// URLs, so this won't
|
// work. This does work on Firefox, and should work if viewing the presentation on a
|
// http:// URL on Chrome.
|
var event = frame.contentDocument.createEvent( 'CustomEvent' );
|
event.initCustomEvent( eventName, true, true, detail );
|
frame.contentDocument.dispatchEvent( event );
|
};
|
|
var spaceHandler = function() {
|
var notes = consoleWindow.document.getElementById( 'notes' );
|
if ( notes.scrollTopMax - notes.scrollTop > 20 ) {
|
notes.scrollTop = notes.scrollTop + notes.clientHeight * 0.8;
|
} else {
|
window.impress().next();
|
}
|
};
|
|
var timerReset = function() {
|
consoleWindow.timerStart = new Date();
|
};
|
|
// Show a clock
|
var clockTick = function() {
|
var now = new Date();
|
var hours = now.getHours();
|
var minutes = now.getMinutes();
|
var seconds = now.getSeconds();
|
var ampm = '';
|
|
if ( lang.useAMPM ) {
|
ampm = ( hours < 12 ) ? 'AM' : 'PM';
|
hours = ( hours > 12 ) ? hours - 12 : hours;
|
hours = ( hours === 0 ) ? 12 : hours;
|
}
|
|
// Clock
|
var clockStr = zeroPad( hours ) + ':' + zeroPad( minutes ) + ':' + zeroPad( seconds ) +
|
' ' + ampm;
|
consoleWindow.document.getElementById( 'clock' ).firstChild.nodeValue = clockStr;
|
|
// Timer
|
seconds = Math.floor( ( now - consoleWindow.timerStart ) / 1000 );
|
minutes = Math.floor( seconds / 60 );
|
seconds = Math.floor( seconds % 60 );
|
consoleWindow.document.getElementById( 'timer' ).firstChild.nodeValue =
|
zeroPad( minutes ) + 'm ' + zeroPad( seconds ) + 's';
|
|
if ( !consoleWindow.initialized ) {
|
|
// Nudge the slide windows after load, or they will scrolled wrong on Firefox.
|
consoleWindow.document.getElementById( 'slideView' ).contentWindow.scrollTo( 0, 0 );
|
consoleWindow.document.getElementById( 'preView' ).contentWindow.scrollTo( 0, 0 );
|
consoleWindow.initialized = true;
|
}
|
};
|
|
var registerKeyEvent = function( keyCodes, handler, window ) {
|
if ( window === undefined ) {
|
window = consoleWindow;
|
}
|
|
// Prevent default keydown action when one of supported key is pressed
|
window.document.addEventListener( 'keydown', function( event ) {
|
if ( !event.ctrlKey && !event.altKey && !event.shiftKey && !event.metaKey &&
|
keyCodes.indexOf( event.keyCode ) !== -1 ) {
|
event.preventDefault();
|
}
|
}, false );
|
|
// Trigger impress action on keyup
|
window.document.addEventListener( 'keyup', function( event ) {
|
if ( !event.ctrlKey && !event.altKey && !event.shiftKey && !event.metaKey &&
|
keyCodes.indexOf( event.keyCode ) !== -1 ) {
|
handler();
|
event.preventDefault();
|
}
|
}, false );
|
};
|
|
var consoleOnLoad = function() {
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
var preView = consoleWindow.document.getElementById( 'preView' );
|
|
// Firefox:
|
slideView.contentDocument.body.classList.add( 'impress-console' );
|
preView.contentDocument.body.classList.add( 'impress-console' );
|
if ( cssFileIframe !== undefined ) {
|
slideView.contentDocument.head.insertAdjacentHTML(
|
'beforeend',
|
'<link rel="stylesheet" type="text/css" href="' + cssFileIframe + '">'
|
);
|
preView.contentDocument.head.insertAdjacentHTML(
|
'beforeend',
|
'<link rel="stylesheet" type="text/css" href="' + cssFileIframe + '">'
|
);
|
}
|
|
// Chrome:
|
slideView.addEventListener( 'load', function() {
|
slideView.contentDocument.body.classList.add( 'impress-console' );
|
if ( cssFileIframe !== undefined ) {
|
slideView.contentDocument.head.insertAdjacentHTML(
|
'beforeend',
|
'<link rel="stylesheet" type="text/css" href="' +
|
cssFileIframe + '">'
|
);
|
}
|
} );
|
preView.addEventListener( 'load', function() {
|
preView.contentDocument.body.classList.add( 'impress-console' );
|
if ( cssFileIframe !== undefined ) {
|
preView.contentDocument.head.insertAdjacentHTML(
|
'beforeend',
|
'<link rel="stylesheet" type="text/css" href="' +
|
cssFileIframe + '">' );
|
}
|
} );
|
};
|
|
var open = function() {
|
if ( top.isconsoleWindow ) {
|
return;
|
}
|
|
if ( consoleWindow && !consoleWindow.closed ) {
|
consoleWindow.focus();
|
} else {
|
consoleWindow = window.open( '', 'impressConsole' );
|
|
// If opening failes this may be because the browser prevents this from
|
// not (or less) interactive JavaScript...
|
if ( consoleWindow == null ) {
|
|
// ... so I add a button to klick.
|
// workaround on firefox
|
var message = document.createElement( 'div' );
|
message.id = 'impress-console-button';
|
message.style.position = 'fixed';
|
message.style.left = 0;
|
message.style.top = 0;
|
message.style.right = 0;
|
message.style.bottom = 0;
|
message.style.backgroundColor = 'rgba(255, 255, 255, 0.9)';
|
var clickStr = 'var x = document.getElementById(\'impress-console-button\');' +
|
'x.parentNode.removeChild(x);' +
|
'var r = document.getElementById(\'' + rootId + '\');' +
|
'impress(\'' + rootId +
|
'\').lib.util.triggerEvent(r, \'impress:console:open\', {})';
|
var styleStr = 'margin: 25vh 25vw;width:50vw;height:50vh;';
|
message.innerHTML = '<button style="' + styleStr + '" ' +
|
'onclick="' + clickStr + '">' +
|
lang.clickToOpen +
|
'</button>';
|
document.body.appendChild( message );
|
return;
|
}
|
|
var cssLink = '';
|
if ( cssFile !== undefined ) {
|
cssLink = '<link rel="stylesheet" type="text/css" media="screen" href="' +
|
cssFile + '">';
|
}
|
|
// This sets the window location to the main window location, so css can be loaded:
|
consoleWindow.document.open();
|
|
// Write the template:
|
consoleWindow.document.write(
|
|
// CssStyleStr is lots of inline <style></style> defined at the end of this file
|
consoleTemplate.replace( '{{cssStyle}}', cssStyleStr() )
|
.replace( '{{cssLink}}', cssLink )
|
.replace( /{{.*?}}/gi, function( x ) {
|
return lang[ x.substring( 2, x.length - 2 ) ]; }
|
)
|
);
|
consoleWindow.document.title = 'Speaker Console (' + document.title + ')';
|
consoleWindow.impress = window.impress;
|
|
// We set this flag so we can detect it later, to prevent infinite popups.
|
consoleWindow.isconsoleWindow = true;
|
|
// Set the onload function:
|
consoleWindow.onload = consoleOnLoad;
|
|
// Add clock tick
|
consoleWindow.timerStart = new Date();
|
consoleWindow.timerReset = timerReset;
|
consoleWindow.clockInterval = setInterval( allConsoles[ rootId ].clockTick, 1000 );
|
|
// Keyboard navigation handlers
|
// 33: pg up, 37: left, 38: up
|
registerKeyEvent( [ 33, 37, 38 ], window.impress().prev );
|
|
// 34: pg down, 39: right, 40: down
|
registerKeyEvent( [ 34, 39, 40 ], window.impress().next );
|
|
// 32: space
|
registerKeyEvent( [ 32 ], spaceHandler );
|
|
// 82: R
|
registerKeyEvent( [ 82 ], timerReset );
|
|
// Cleanup
|
consoleWindow.onbeforeunload = function() {
|
|
// I don't know why onunload doesn't work here.
|
clearInterval( consoleWindow.clockInterval );
|
};
|
|
// It will need a little nudge on Firefox, but only after loading:
|
onStepEnter();
|
consoleWindow.initialized = false;
|
consoleWindow.document.close();
|
|
//Catch any window resize to pass size on
|
window.onresize = resize;
|
consoleWindow.onresize = resize;
|
|
return consoleWindow;
|
}
|
};
|
|
var resize = function() {
|
var slideView = consoleWindow.document.getElementById( 'slideView' );
|
var preView = consoleWindow.document.getElementById( 'preView' );
|
|
// Get ratio of presentation
|
var ratio = window.innerHeight / window.innerWidth;
|
|
// Get size available for views
|
var views = consoleWindow.document.getElementById( 'views' );
|
|
// SlideView may have a border or some padding:
|
// asuming same border width on both direktions
|
var delta = slideView.offsetWidth - slideView.clientWidth;
|
|
// Set views
|
var slideViewWidth = ( views.clientWidth - delta );
|
var slideViewHeight = Math.floor( slideViewWidth * ratio );
|
|
var preViewTop = slideViewHeight + preViewGap;
|
|
var preViewWidth = Math.floor( slideViewWidth * preViewDefaultFactor );
|
var preViewHeight = Math.floor( slideViewHeight * preViewDefaultFactor );
|
|
// Shrink preview to fit into space available
|
if ( views.clientHeight - delta < preViewTop + preViewHeight ) {
|
preViewHeight = views.clientHeight - delta - preViewTop;
|
preViewWidth = Math.floor( preViewHeight / ratio );
|
}
|
|
// If preview is not high enough forget ratios!
|
if ( preViewWidth <= Math.floor( slideViewWidth * preViewMinimumFactor ) ) {
|
slideViewWidth = ( views.clientWidth - delta );
|
slideViewHeight = Math.floor( ( views.clientHeight - delta - preViewGap ) /
|
( 1 + preViewMinimumFactor ) );
|
|
preViewTop = slideViewHeight + preViewGap;
|
|
preViewWidth = Math.floor( slideViewWidth * preViewMinimumFactor );
|
preViewHeight = views.clientHeight - delta - preViewTop;
|
}
|
|
// Set the calculated into styles
|
slideView.style.width = slideViewWidth + 'px';
|
slideView.style.height = slideViewHeight + 'px';
|
|
preView.style.top = preViewTop + 'px';
|
|
preView.style.width = preViewWidth + 'px';
|
preView.style.height = preViewHeight + 'px';
|
};
|
|
var _init = function( cssConsole, cssIframe ) {
|
if ( cssConsole !== undefined ) {
|
cssFile = cssConsole;
|
}
|
|
// You can also specify the css in the presentation root div:
|
// <div id="impress" data-console-css=..." data-console-css-iframe="...">
|
else if ( root.dataset.consoleCss !== undefined ) {
|
cssFile = root.dataset.consoleCss;
|
}
|
|
if ( cssIframe !== undefined ) {
|
cssFileIframe = cssIframe;
|
} else if ( root.dataset.consoleCssIframe !== undefined ) {
|
cssFileIframe = root.dataset.consoleCssIframe;
|
}
|
|
// Register the event
|
root.addEventListener( 'impress:stepleave', onStepLeave );
|
root.addEventListener( 'impress:stepenter', onStepEnter );
|
root.addEventListener( 'impress:substep:stepleaveaborted', onSubstep );
|
root.addEventListener( 'impress:substep:show', onSubstepShow );
|
root.addEventListener( 'impress:substep:hide', onSubstepHide );
|
|
//When the window closes, clean up after ourselves.
|
window.onunload = function() {
|
if ( consoleWindow && !consoleWindow.closed ) {
|
consoleWindow.close();
|
}
|
};
|
|
//Open speaker console when they press 'p'
|
registerKeyEvent( [ 80 ], open, window );
|
|
//Btw, you can also launch console automatically:
|
//<div id="impress" data-console-autolaunch="true">
|
if ( root.dataset.consoleAutolaunch === 'true' ) {
|
open();
|
}
|
};
|
|
var init = function( cssConsole, cssIframe ) {
|
if ( ( cssConsole === undefined || cssConsole === cssFileOldDefault ) &&
|
( cssIframe === undefined || cssIframe === cssFileIframeOldDefault ) ) {
|
window.console.log( 'impressConsole().init() is deprecated. ' +
|
'impressConsole is now initialized automatically when you ' +
|
'call impress().init().' );
|
}
|
_init( cssConsole, cssIframe );
|
};
|
|
// New API for impress.js plugins is based on using events
|
root.addEventListener( 'impress:console:open', function() {
|
open();
|
} );
|
|
/**
|
* Register a key code to an event handler
|
*
|
* :param: event.detail.keyCodes List of key codes
|
* :param: event.detail.handler A function registered as the event handler
|
* :param: event.detail.window The console window to register the keycode in
|
*/
|
root.addEventListener( 'impress:console:registerKeyEvent', function( event ) {
|
registerKeyEvent( event.detail.keyCodes, event.detail.handler, event.detail.window );
|
} );
|
|
// Return the object
|
allConsoles[ rootId ] = { init: init, open: open, clockTick: clockTick,
|
registerKeyEvent: registerKeyEvent, _init: _init };
|
return allConsoles[ rootId ];
|
|
};
|
|
// This initializes impressConsole automatically when initializing impress itself
|
document.addEventListener( 'impress:init', function( event ) {
|
|
// Note: impressConsole wants the id string, not the DOM element directly
|
impressConsole( event.target.id )._init();
|
|
// Add 'P' to the help popup
|
triggerEvent( document, 'impress:help:add',
|
{ command: 'P', text: 'Presenter console', row: 10 } );
|
} );
|
|
// Returns a string to be used inline as a css <style> element in the console window.
|
// Apologies for length, but hiding it here at the end to keep it away from rest of the code.
|
var cssStyleStr = function() {
|
return `<style>
|
#impressconsole body {
|
background-color: rgb(255, 255, 255);
|
padding: 0;
|
margin: 0;
|
font-family: verdana, arial, sans-serif;
|
font-size: 2vw;
|
}
|
|
#impressconsole div#console {
|
position: absolute;
|
top: 0.5vw;
|
left: 0.5vw;
|
right: 0.5vw;
|
bottom: 3vw;
|
margin: 0;
|
}
|
|
#impressconsole div#views, #impressconsole div#notes {
|
position: absolute;
|
top: 0;
|
bottom: 0;
|
}
|
|
#impressconsole div#views {
|
left: 0;
|
right: 50vw;
|
overflow: hidden;
|
}
|
|
#impressconsole div#blocker {
|
position: absolute;
|
right: 0;
|
bottom: 0;
|
}
|
|
#impressconsole div#notes {
|
left: 50vw;
|
right: 0;
|
overflow-x: hidden;
|
overflow-y: auto;
|
padding: 0.3ex;
|
background-color: rgb(255, 255, 255);
|
border: solid 1px rgb(120, 120, 120);
|
}
|
|
#impressconsole div#notes .noNotes {
|
color: rgb(200, 200, 200);
|
}
|
|
#impressconsole div#notes p {
|
margin-top: 0;
|
}
|
|
#impressconsole iframe {
|
position: absolute;
|
margin: 0;
|
padding: 0;
|
left: 0;
|
border: solid 1px rgb(120, 120, 120);
|
}
|
|
#impressconsole iframe#slideView {
|
top: 0;
|
width: 49vw;
|
height: 49vh;
|
}
|
|
#impressconsole iframe#preView {
|
opacity: 0.7;
|
top: 50vh;
|
width: 30vw;
|
height: 30vh;
|
}
|
|
#impressconsole div#controls {
|
margin: 0;
|
position: absolute;
|
bottom: 0.25vw;
|
left: 0.5vw;
|
right: 0.5vw;
|
height: 2.5vw;
|
background-color: rgb(255, 255, 255);
|
background-color: rgba(255, 255, 255, 0.6);
|
}
|
|
#impressconsole div#prev, div#next {
|
}
|
|
#impressconsole div#prev a, #impressconsole div#next a {
|
display: block;
|
border: solid 1px rgb(70, 70, 70);
|
border-radius: 0.5vw;
|
font-size: 1.5vw;
|
padding: 0.25vw;
|
text-decoration: none;
|
background-color: rgb(220, 220, 220);
|
color: rgb(0, 0, 0);
|
}
|
|
#impressconsole div#prev a:hover, #impressconsole div#next a:hover {
|
background-color: rgb(245, 245, 245);
|
}
|
|
#impressconsole div#prev {
|
float: left;
|
}
|
|
#impressconsole div#next {
|
float: right;
|
}
|
|
#impressconsole div#status {
|
margin-left: 2em;
|
margin-right: 2em;
|
text-align: center;
|
float: right;
|
}
|
|
#impressconsole div#clock {
|
margin-left: 2em;
|
margin-right: 2em;
|
text-align: center;
|
float: left;
|
}
|
|
#impressconsole div#timer {
|
margin-left: 2em;
|
margin-right: 2em;
|
text-align: center;
|
float: left;
|
}
|
|
#impressconsole span.moving {
|
color: rgb(255, 0, 0);
|
}
|
|
#impressconsole span.ready {
|
color: rgb(0, 128, 0);
|
}
|
</style>`;
|
};
|
|
} )( document, window );
|
|
/**
|
* Media Plugin
|
*
|
* This plugin will do the following things:
|
*
|
* - Add a special class when playing (body.impress-media-video-playing
|
* and body.impress-media-video-playing) and pausing media (body.impress-media-video-paused
|
* and body.impress-media-audio-paused) (removing them when ending).
|
* This can be useful for example for darkening the background or fading out other elements
|
* while a video is playing.
|
* Only media at the current step are taken into account. All classes are removed when leaving
|
* a step.
|
*
|
* - Introduce the following new data attributes:
|
*
|
* - data-media-autoplay="true": Autostart media when entering its step.
|
* - data-media-autostop="true": Stop media (= pause and reset to start), when leaving its
|
* step.
|
* - data-media-autopause="true": Pause media but keep current time when leaving its step.
|
*
|
* When these attributes are added to a step they are inherited by all media on this step.
|
* Of course this setting can be overwritten by adding different attributes to inidvidual
|
* media.
|
*
|
* The same rule applies when this attributes is added to the root element. Settings can be
|
* overwritten for individual steps and media.
|
*
|
* Examples:
|
* - data-media-autostart="true" data-media-autostop="true": start media on enter, stop on
|
* leave, restart from beginning when re-entering the step.
|
*
|
* - data-media-autostart="true" data-media-autopause="true": start media on enter, pause on
|
* leave, resume on re-enter
|
*
|
* - data-media-autostart="true" data-media-autostop="true" data-media-autopause="true": start
|
* media on enter, stop on leave (stop overwrites pause).
|
*
|
* - data-media-autostart="true" data-media-autopause="false": let media start automatically
|
* when entering a step and let it play when leaving the step.
|
*
|
* - <div id="impress" data-media-autostart="true"> ... <div class="step"
|
* data-media-autostart="false">
|
* All media is startet automatically on all steps except the one that has the
|
* data-media-autostart="false" attribute.
|
*
|
* - Pro tip: Use <audio onended="impress().next()"> or <video onended="impress().next()"> to
|
* proceed to the next step automatically, when the end of the media is reached.
|
*
|
*
|
* Copyright 2018 Holger Teichert (@complanar)
|
* Released under the MIT license.
|
*/
|
/* global window, document */
|
|
( function( document, window ) {
|
"use strict";
|
var root, api, gc, attributeTracker;
|
|
attributeTracker = [];
|
|
// Function names
|
var enhanceMediaNodes,
|
enhanceMedia,
|
removeMediaClasses,
|
onStepenterDetectImpressConsole,
|
onStepenter,
|
onStepleave,
|
onPlay,
|
onPause,
|
onEnded,
|
getMediaAttribute,
|
teardown;
|
|
document.addEventListener( "impress:init", function( event ) {
|
root = event.target;
|
api = event.detail.api;
|
gc = api.lib.gc;
|
|
enhanceMedia();
|
|
gc.pushCallback( teardown );
|
}, false );
|
|
teardown = function() {
|
var el, i;
|
removeMediaClasses();
|
for ( i = 0; i < attributeTracker.length; i += 1 ) {
|
el = attributeTracker[ i ];
|
el.node.removeAttribute( el.attr );
|
}
|
attributeTracker = [];
|
};
|
|
getMediaAttribute = function( attributeName, nodes ) {
|
var attrName, attrValue, i, node;
|
attrName = "data-media-" + attributeName;
|
|
// Look for attributes in all nodes
|
for ( i = 0; i < nodes.length; i += 1 ) {
|
node = nodes[ i ];
|
|
// First test, if the attribute exists, because some browsers may return
|
// an empty string for non-existing attributes - specs are not clear at that point
|
if ( node.hasAttribute( attrName ) ) {
|
|
// Attribute found, return their parsed boolean value, empty strings count as true
|
// to enable empty value booleans (common in html5 but not allowed in well formed
|
// xml).
|
attrValue = node.getAttribute( attrName );
|
if ( attrValue === "" || attrValue === "true" ) {
|
return true;
|
} else {
|
return false;
|
}
|
}
|
|
// No attribute found at current node, proceed with next round
|
}
|
|
// Last resort: no attribute found - return undefined to distiguish from false
|
return undefined;
|
};
|
|
onPlay = function( event ) {
|
var type = event.target.nodeName.toLowerCase();
|
document.body.classList.add( "impress-media-" + type + "-playing" );
|
document.body.classList.remove( "impress-media-" + type + "-paused" );
|
};
|
|
onPause = function( event ) {
|
var type = event.target.nodeName.toLowerCase();
|
document.body.classList.add( "impress-media-" + type + "-paused" );
|
document.body.classList.remove( "impress-media-" + type + "-playing" );
|
};
|
|
onEnded = function( event ) {
|
var type = event.target.nodeName.toLowerCase();
|
document.body.classList.remove( "impress-media-" + type + "-playing" );
|
document.body.classList.remove( "impress-media-" + type + "-paused" );
|
};
|
|
removeMediaClasses = function() {
|
var type, types;
|
types = [ "video", "audio" ];
|
for ( type in types ) {
|
document.body.classList.remove( "impress-media-" + types[ type ] + "-playing" );
|
document.body.classList.remove( "impress-media-" + types[ type ] + "-paused" );
|
}
|
};
|
|
enhanceMediaNodes = function() {
|
var i, id, media, mediaElement, type;
|
|
media = root.querySelectorAll( "audio, video" );
|
for ( i = 0; i < media.length; i += 1 ) {
|
type = media[ i ].nodeName.toLowerCase();
|
|
// Set an id to identify each media node - used e.g. for cross references by
|
// the consoleMedia plugin
|
mediaElement = media[ i ];
|
id = mediaElement.getAttribute( "id" );
|
if ( id === undefined || id === null ) {
|
mediaElement.setAttribute( "id", "media-" + type + "-" + i );
|
attributeTracker.push( { "node": mediaElement, "attr": "id" } );
|
}
|
gc.addEventListener( mediaElement, "play", onPlay );
|
gc.addEventListener( mediaElement, "playing", onPlay );
|
gc.addEventListener( mediaElement, "pause", onPause );
|
gc.addEventListener( mediaElement, "ended", onEnded );
|
}
|
};
|
|
enhanceMedia = function() {
|
var steps, stepElement, i;
|
enhanceMediaNodes();
|
steps = document.getElementsByClassName( "step" );
|
for ( i = 0; i < steps.length; i += 1 ) {
|
stepElement = steps[ i ];
|
|
gc.addEventListener( stepElement, "impress:stepenter", onStepenter );
|
gc.addEventListener( stepElement, "impress:stepleave", onStepleave );
|
}
|
};
|
|
onStepenterDetectImpressConsole = function() {
|
return {
|
"preview": ( window.frameElement !== null && window.frameElement.id === "preView" ),
|
"slideView": ( window.frameElement !== null && window.frameElement.id === "slideView" )
|
};
|
};
|
|
onStepenter = function( event ) {
|
var stepElement, media, mediaElement, i, onConsole, autoplay;
|
if ( ( !event ) || ( !event.target ) ) {
|
return;
|
}
|
|
stepElement = event.target;
|
removeMediaClasses();
|
|
media = stepElement.querySelectorAll( "audio, video" );
|
for ( i = 0; i < media.length; i += 1 ) {
|
mediaElement = media[ i ];
|
|
// Autoplay when (maybe inherited) autoplay setting is true,
|
// but only if not on preview of the next step in impressConsole
|
onConsole = onStepenterDetectImpressConsole();
|
autoplay = getMediaAttribute( "autoplay", [ mediaElement, stepElement, root ] );
|
if ( autoplay && !onConsole.preview ) {
|
if ( onConsole.slideView ) {
|
mediaElement.muted = true;
|
}
|
mediaElement.play();
|
}
|
}
|
};
|
|
onStepleave = function( event ) {
|
var stepElement, media, i, mediaElement, autoplay, autopause, autostop;
|
if ( ( !event || !event.target ) ) {
|
return;
|
}
|
|
stepElement = event.target;
|
media = event.target.querySelectorAll( "audio, video" );
|
for ( i = 0; i < media.length; i += 1 ) {
|
mediaElement = media[ i ];
|
|
autoplay = getMediaAttribute( "autoplay", [ mediaElement, stepElement, root ] );
|
autopause = getMediaAttribute( "autopause", [ mediaElement, stepElement, root ] );
|
autostop = getMediaAttribute( "autostop", [ mediaElement, stepElement, root ] );
|
|
// If both autostop and autopause are undefined, set it to the value of autoplay
|
if ( autostop === undefined && autopause === undefined ) {
|
autostop = autoplay;
|
}
|
|
if ( autopause || autostop ) {
|
mediaElement.pause();
|
if ( autostop ) {
|
mediaElement.currentTime = 0;
|
}
|
}
|
}
|
removeMediaClasses();
|
};
|
|
} )( document, window );
|
|
/**
|
* Mobile devices support
|
*
|
* Allow presentation creators to hide all but 3 slides, to save resources, particularly on mobile
|
* devices, using classes body.impress-mobile, .step.prev, .step.active and .step.next.
|
*
|
* Note: This plugin does not take into account possible redirections done with skip, goto etc
|
* plugins. Basically it wouldn't work as intended in such cases, but the active step will at least
|
* be correct.
|
*
|
* Adapted to a plugin from a submission by @Kzeni:
|
* https://github.com/impress/impress.js/issues/333
|
*/
|
/* global document, navigator */
|
( function( document ) {
|
"use strict";
|
|
var getNextStep = function( el ) {
|
var steps = document.querySelectorAll( ".step" );
|
for ( var i = 0; i < steps.length; i++ ) {
|
if ( steps[ i ] === el ) {
|
if ( i + 1 < steps.length ) {
|
return steps[ i + 1 ];
|
} else {
|
return steps[ 0 ];
|
}
|
}
|
}
|
};
|
var getPrevStep = function( el ) {
|
var steps = document.querySelectorAll( ".step" );
|
for ( var i = steps.length - 1; i >= 0; i-- ) {
|
if ( steps[ i ] === el ) {
|
if ( i - 1 >= 0 ) {
|
return steps[ i - 1 ];
|
} else {
|
return steps[ steps.length - 1 ];
|
}
|
}
|
}
|
};
|
|
// Detect mobile browsers & add CSS class as appropriate.
|
document.addEventListener( "impress:init", function( event ) {
|
var body = document.body;
|
if ( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(
|
navigator.userAgent
|
) ) {
|
body.classList.add( "impress-mobile" );
|
}
|
|
// Unset all this on teardown
|
var api = event.detail.api;
|
api.lib.gc.pushCallback( function() {
|
document.body.classList.remove( "impress-mobile" );
|
var prev = document.getElementsByClassName( "prev" )[ 0 ];
|
var next = document.getElementsByClassName( "next" )[ 0 ];
|
if ( typeof prev !== "undefined" ) {
|
prev.classList.remove( "prev" );
|
}
|
if ( typeof next !== "undefined" ) {
|
next.classList.remove( "next" );
|
}
|
} );
|
} );
|
|
// Add prev and next classes to the siblings of the newly entered active step element
|
// Remove prev and next classes from their current step elements
|
// Note: As an exception we break namespacing rules, as these are useful general purpose
|
// classes. (Naming rules would require us to use css classes mobile-next and mobile-prev,
|
// based on plugin name.)
|
document.addEventListener( "impress:stepenter", function( event ) {
|
var oldprev = document.getElementsByClassName( "prev" )[ 0 ];
|
var oldnext = document.getElementsByClassName( "next" )[ 0 ];
|
|
var prev = getPrevStep( event.target );
|
prev.classList.add( "prev" );
|
var next = getNextStep( event.target );
|
next.classList.add( "next" );
|
|
if ( typeof oldprev !== "undefined" ) {
|
oldprev.classList.remove( "prev" );
|
}
|
if ( typeof oldnext !== "undefined" ) {
|
oldnext.classList.remove( "next" );
|
}
|
} );
|
} )( document );
|
|
|
/**
|
* Mouse timeout plugin
|
*
|
* After 3 seconds of mouse inactivity, add the css class
|
* `body.impress-mouse-timeout`. On `mousemove`, `click` or `touch`, remove the
|
* class.
|
*
|
* The use case for this plugin is to use CSS to hide elements from the screen
|
* and only make them visible when the mouse is moved. Examples where this
|
* might be used are: the toolbar from the toolbar plugin, and the mouse cursor
|
* itself.
|
*
|
* Example CSS:
|
*
|
* body.impress-mouse-timeout {
|
* cursor: none;
|
* }
|
* body.impress-mouse-timeout div#impress-toolbar {
|
* display: none;
|
* }
|
*
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
/* global window, document */
|
( function( document, window ) {
|
"use strict";
|
var timeout = 3;
|
var timeoutHandle;
|
|
var hide = function() {
|
|
// Mouse is now inactive
|
document.body.classList.add( "impress-mouse-timeout" );
|
};
|
|
var show = function() {
|
if ( timeoutHandle ) {
|
window.clearTimeout( timeoutHandle );
|
}
|
|
// Mouse is now active
|
document.body.classList.remove( "impress-mouse-timeout" );
|
|
// Then set new timeout after which it is considered inactive again
|
timeoutHandle = window.setTimeout( hide, timeout * 1000 );
|
};
|
|
document.addEventListener( "impress:init", function( event ) {
|
var api = event.detail.api;
|
var gc = api.lib.gc;
|
gc.addEventListener( document, "mousemove", show );
|
gc.addEventListener( document, "click", show );
|
gc.addEventListener( document, "touch", show );
|
|
// Set first timeout
|
show();
|
|
// Unset all this on teardown
|
gc.pushCallback( function() {
|
window.clearTimeout( timeoutHandle );
|
document.body.classList.remove( "impress-mouse-timeout" );
|
} );
|
}, false );
|
|
} )( document, window );
|
|
/**
|
* Navigation events plugin
|
*
|
* As you can see this part is separate from the impress.js core code.
|
* It's because these navigation actions only need what impress.js provides with
|
* its simple API.
|
*
|
* This plugin is what we call an _init plugin_. It's a simple kind of
|
* impress.js plugin. When loaded, it starts listening to the `impress:init`
|
* event. That event listener initializes the plugin functionality - in this
|
* case we listen to some keypress and mouse events. The only dependencies on
|
* core impress.js functionality is the `impress:init` method, as well as using
|
* the public api `next(), prev(),` etc when keys are pressed.
|
*
|
* Copyright 2011-2012 Bartek Szopka (@bartaz)
|
* Released under the MIT license.
|
* ------------------------------------------------
|
* author: Bartek Szopka
|
* version: 0.5.3
|
* url: http://bartaz.github.com/impress.js/
|
* source: http://github.com/bartaz/impress.js/
|
*
|
*/
|
/* global document */
|
( function( document ) {
|
"use strict";
|
|
// Wait for impress.js to be initialized
|
document.addEventListener( "impress:init", function( event ) {
|
|
// Getting API from event data.
|
// So you don't event need to know what is the id of the root element
|
// or anything. `impress:init` event data gives you everything you
|
// need to control the presentation that was just initialized.
|
var api = event.detail.api;
|
var gc = api.lib.gc;
|
var util = api.lib.util;
|
|
// Supported keys are:
|
// [space] - quite common in presentation software to move forward
|
// [up] [right] / [down] [left] - again common and natural addition,
|
// [pgdown] / [pgup] - often triggered by remote controllers,
|
// [tab] - this one is quite controversial, but the reason it ended up on
|
// this list is quite an interesting story... Remember that strange part
|
// in the impress.js code where window is scrolled to 0,0 on every presentation
|
// step, because sometimes browser scrolls viewport because of the focused element?
|
// Well, the [tab] key by default navigates around focusable elements, so clicking
|
// it very often caused scrolling to focused element and breaking impress.js
|
// positioning. I didn't want to just prevent this default action, so I used [tab]
|
// as another way to moving to next step... And yes, I know that for the sake of
|
// consistency I should add [shift+tab] as opposite action...
|
var isNavigationEvent = function( event ) {
|
|
// Don't trigger navigation for example when user returns to browser window with ALT+TAB
|
if ( event.altKey || event.ctrlKey || event.metaKey ) {
|
return false;
|
}
|
|
// In the case of TAB, we force step navigation always, overriding the browser
|
// navigation between input elements, buttons and links.
|
if ( event.keyCode === 9 ) {
|
return true;
|
}
|
|
// With the sole exception of TAB, we also ignore keys pressed if shift is down.
|
if ( event.shiftKey ) {
|
return false;
|
}
|
|
if ( ( event.keyCode >= 32 && event.keyCode <= 34 ) ||
|
( event.keyCode >= 37 && event.keyCode <= 40 ) ) {
|
return true;
|
}
|
};
|
|
// KEYBOARD NAVIGATION HANDLERS
|
|
// Prevent default keydown action when one of supported key is pressed.
|
gc.addEventListener( document, "keydown", function( event ) {
|
if ( isNavigationEvent( event ) ) {
|
event.preventDefault();
|
}
|
}, false );
|
|
// Trigger impress action (next or prev) on keyup.
|
gc.addEventListener( document, "keyup", function( event ) {
|
if ( isNavigationEvent( event ) ) {
|
if ( event.shiftKey ) {
|
switch ( event.keyCode ) {
|
case 9: // Shift+tab
|
case 32: // Shift+space
|
api.prev();
|
break;
|
}
|
} else {
|
switch ( event.keyCode ) {
|
case 33: // Pg up
|
case 37: // Left
|
case 38: // Up
|
api.prev( event );
|
break;
|
case 9: // Tab
|
case 32: // Space
|
case 34: // Pg down
|
case 39: // Right
|
case 40: // Down
|
api.next( event );
|
break;
|
}
|
}
|
event.preventDefault();
|
}
|
}, false );
|
|
// Delegated handler for clicking on the links to presentation steps
|
gc.addEventListener( document, "click", function( event ) {
|
|
// Event delegation with "bubbling"
|
// check if event target (or any of its parents is a link)
|
var target = event.target;
|
try {
|
while ( ( target.tagName !== "A" ) &&
|
( target !== document.documentElement ) ) {
|
target = target.parentNode;
|
}
|
|
if ( target.tagName === "A" ) {
|
var href = target.getAttribute( "href" );
|
|
// If it's a link to presentation step, target this step
|
if ( href && href[ 0 ] === "#" ) {
|
target = document.getElementById( href.slice( 1 ) );
|
}
|
}
|
|
if ( api.goto( target ) ) {
|
event.stopImmediatePropagation();
|
event.preventDefault();
|
}
|
}
|
catch ( err ) {
|
|
// For example, when clicking on the button to launch speaker console, the button
|
// is immediately deleted from the DOM. In this case target is a DOM element when
|
// we get it, but turns out to be null if you try to actually do anything with it.
|
if ( err instanceof TypeError &&
|
err.message === "target is null" ) {
|
return;
|
}
|
throw err;
|
}
|
}, false );
|
|
// Delegated handler for clicking on step elements
|
gc.addEventListener( document, "click", function( event ) {
|
var target = event.target;
|
try {
|
|
// Find closest step element that is not active
|
while ( !( target.classList.contains( "step" ) &&
|
!target.classList.contains( "active" ) ) &&
|
( target !== document.documentElement ) ) {
|
target = target.parentNode;
|
}
|
|
if ( api.goto( target ) ) {
|
event.preventDefault();
|
}
|
}
|
catch ( err ) {
|
|
// For example, when clicking on the button to launch speaker console, the button
|
// is immediately deleted from the DOM. In this case target is a DOM element when
|
// we get it, but turns out to be null if you try to actually do anything with it.
|
if ( err instanceof TypeError &&
|
err.message === "target is null" ) {
|
return;
|
}
|
throw err;
|
}
|
}, false );
|
|
// Add a line to the help popup
|
util.triggerEvent( document, "impress:help:add", { command: "Left & Right",
|
text: "Previous & Next step",
|
row: 1 } );
|
|
}, false );
|
|
} )( document );
|
|
|
/**
|
* Navigation UI plugin
|
*
|
* This plugin provides UI elements "back", "forward" and a list to select
|
* a specific slide number.
|
*
|
* The navigation controls are added to the toolbar plugin via DOM events. User must enable the
|
* toolbar in a presentation to have them visible.
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
|
// This file contains so much HTML, that we will just respectfully disagree about js
|
/* jshint quotmark:single */
|
/* global document */
|
|
( function( document ) {
|
'use strict';
|
var toolbar;
|
var api;
|
var root;
|
var steps;
|
var hideSteps = [];
|
var prev;
|
var select;
|
var next;
|
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( 'CustomEvent' );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
var makeDomElement = function( html ) {
|
var tempDiv = document.createElement( 'div' );
|
tempDiv.innerHTML = html;
|
return tempDiv.firstChild;
|
};
|
|
var selectOptionsHtml = function() {
|
var options = '';
|
for ( var i = 0; i < steps.length; i++ ) {
|
|
// Omit steps that are listed as hidden from select widget
|
if ( hideSteps.indexOf( steps[ i ] ) < 0 ) {
|
options = options + '<option value="' + steps[ i ].id + '">' + // jshint ignore:line
|
steps[ i ].id + '</option>' + '\n'; // jshint ignore:line
|
}
|
}
|
return options;
|
};
|
|
var addNavigationControls = function( event ) {
|
api = event.detail.api;
|
var gc = api.lib.gc;
|
root = event.target;
|
steps = root.querySelectorAll( '.step' );
|
|
var prevHtml = '<button id="impress-navigation-ui-prev" title="Previous" ' +
|
'class="impress-navigation-ui"><</button>';
|
var selectHtml = '<select id="impress-navigation-ui-select" title="Go to" ' +
|
'class="impress-navigation-ui">' + '\n' +
|
selectOptionsHtml() +
|
'</select>';
|
var nextHtml = '<button id="impress-navigation-ui-next" title="Next" ' +
|
'class="impress-navigation-ui">></button>';
|
|
prev = makeDomElement( prevHtml );
|
prev.addEventListener( 'click',
|
function() {
|
api.prev();
|
} );
|
select = makeDomElement( selectHtml );
|
select.addEventListener( 'change',
|
function( event ) {
|
api.goto( event.target.value );
|
} );
|
gc.addEventListener( root, 'impress:steprefresh', function( event ) {
|
|
// As impress.js core now allows to dynamically edit the steps, including adding,
|
// removing, and reordering steps, we need to requery and redraw the select list on
|
// every stepenter event.
|
steps = root.querySelectorAll( '.step' );
|
select.innerHTML = '\n' + selectOptionsHtml();
|
|
// Make sure the list always shows the step we're actually on, even if it wasn't
|
// selected from the list
|
select.value = event.target.id;
|
} );
|
next = makeDomElement( nextHtml );
|
next.addEventListener( 'click',
|
function() {
|
api.next();
|
} );
|
|
triggerEvent( toolbar, 'impress:toolbar:appendChild', { group: 0, element: prev } );
|
triggerEvent( toolbar, 'impress:toolbar:appendChild', { group: 0, element: select } );
|
triggerEvent( toolbar, 'impress:toolbar:appendChild', { group: 0, element: next } );
|
|
};
|
|
// API for not listing given step in the select widget.
|
// For example, if you set class="skip" on some element, you may not want it to show up in the
|
// list either. Otoh we cannot assume that, or anything else, so steps that user wants omitted
|
// must be specifically added with this API call.
|
document.addEventListener( 'impress:navigation-ui:hideStep', function( event ) {
|
hideSteps.push( event.target );
|
if ( select ) {
|
select.innerHTML = selectOptionsHtml();
|
}
|
}, false );
|
|
// Wait for impress.js to be initialized
|
document.addEventListener( 'impress:init', function( event ) {
|
toolbar = document.querySelector( '#impress-toolbar' );
|
if ( toolbar ) {
|
addNavigationControls( event );
|
}
|
}, false );
|
|
} )( document );
|
|
|
/* global document */
|
( function( document ) {
|
"use strict";
|
var root;
|
var stepids = [];
|
|
// Get stepids from the steps under impress root
|
var getSteps = function() {
|
stepids = [];
|
var steps = root.querySelectorAll( ".step" );
|
for ( var i = 0; i < steps.length; i++ )
|
{
|
stepids[ i + 1 ] = steps[ i ].id;
|
}
|
};
|
|
// Wait for impress.js to be initialized
|
document.addEventListener( "impress:init", function( event ) {
|
root = event.target;
|
getSteps();
|
var gc = event.detail.api.lib.gc;
|
gc.pushCallback( function() {
|
stepids = [];
|
if ( progressbar ) {
|
progressbar.style.width = "";
|
}
|
if ( progress ) {
|
progress.innerHTML = "";
|
}
|
} );
|
} );
|
|
var progressbar = document.querySelector( "div.impress-progressbar div" );
|
var progress = document.querySelector( "div.impress-progress" );
|
|
if ( null !== progressbar || null !== progress ) {
|
document.addEventListener( "impress:stepleave", function( event ) {
|
updateProgressbar( event.detail.next.id );
|
} );
|
|
document.addEventListener( "impress:steprefresh", function( event ) {
|
getSteps();
|
updateProgressbar( event.target.id );
|
} );
|
|
}
|
|
function updateProgressbar( slideId ) {
|
var slideNumber = stepids.indexOf( slideId );
|
if ( null !== progressbar ) {
|
var width = 100 / ( stepids.length - 1 ) * ( slideNumber );
|
progressbar.style.width = width.toFixed( 2 ) + "%";
|
}
|
if ( null !== progress ) {
|
progress.innerHTML = slideNumber + "/" + ( stepids.length - 1 );
|
}
|
}
|
} )( document );
|
|
/**
|
* Relative Positioning Plugin
|
*
|
* This plugin provides support for defining the coordinates of a step relative
|
* to the previous step. This is often more convenient when creating presentations,
|
* since as you add, remove or move steps, you may not need to edit the positions
|
* as much as is the case with the absolute coordinates supported by impress.js
|
* core.
|
*
|
* Example:
|
*
|
* <!-- Position step 1000 px to the right and 500 px up from the previous step. -->
|
* <div class="step" data-rel-x="1000" data-rel-y="500">
|
*
|
* Following html attributes are supported for step elements:
|
*
|
* data-rel-x
|
* data-rel-y
|
* data-rel-z
|
*
|
* These values are also inherited from the previous step. This makes it easy to
|
* create a boring presentation where each slide shifts for example 1000px down
|
* from the previous.
|
*
|
* In addition to plain numbers, which are pixel values, it is also possible to
|
* define relative positions as a multiple of screen height and width, using
|
* a unit of "h" and "w", respectively, appended to the number.
|
*
|
* Example:
|
*
|
* <div class="step" data-rel-x="1.5w" data-rel-y="1.5h">
|
*
|
* This plugin is a *pre-init plugin*. It is called synchronously from impress.js
|
* core at the beginning of `impress().init()`. This allows it to process its own
|
* data attributes first, and possibly alter the data-x, data-y and data-z attributes
|
* that will then be processed by `impress().init()`.
|
*
|
* (Another name for this kind of plugin might be called a *filter plugin*, but
|
* *pre-init plugin* is more generic, as a plugin might do whatever it wants in
|
* the pre-init stage.)
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
|
/* global document, window */
|
|
( function( document, window ) {
|
"use strict";
|
|
var startingState = {};
|
|
/**
|
* Copied from core impress.js. We currently lack a library mechanism to
|
* to share utility functions like this.
|
*/
|
var toNumber = function( numeric, fallback ) {
|
return isNaN( numeric ) ? ( fallback || 0 ) : Number( numeric );
|
};
|
|
/**
|
* Extends toNumber() to correctly compute also relative-to-screen-size values 5w and 5h.
|
*
|
* Returns the computed value in pixels with w/h postfix removed.
|
*/
|
var toNumberAdvanced = function( numeric, fallback ) {
|
if ( typeof numeric !== "string" ) {
|
return toNumber( numeric, fallback );
|
}
|
var ratio = numeric.match( /^([+-]*[\d\.]+)([wh])$/ );
|
if ( ratio == null ) {
|
return toNumber( numeric, fallback );
|
} else {
|
var value = parseFloat( ratio[ 1 ] );
|
var multiplier = ratio[ 2 ] === "w" ? window.innerWidth : window.innerHeight;
|
return value * multiplier;
|
}
|
};
|
|
var computeRelativePositions = function( el, prev ) {
|
var data = el.dataset;
|
|
if ( !prev ) {
|
|
// For the first step, inherit these defaults
|
prev = { x:0, y:0, z:0, relative: { x:0, y:0, z:0 } };
|
}
|
|
if ( data.relTo ) {
|
|
var ref = document.getElementById( data.relTo );
|
if ( ref ) {
|
|
// Test, if it is a previous step that already has some assigned position data
|
if ( el.compareDocumentPosition( ref ) & Node.DOCUMENT_POSITION_PRECEDING ) {
|
prev.x = toNumber( ref.getAttribute( "data-x" ) );
|
prev.y = toNumber( ref.getAttribute( "data-y" ) );
|
prev.z = toNumber( ref.getAttribute( "data-z" ) );
|
prev.relative = {};
|
} else {
|
window.console.error(
|
"impress.js rel plugin: Step \"" + data.relTo + "\" is not defined " +
|
"*before* the current step. Referencing is limited to previously defined " +
|
"steps. Please check your markup. Ignoring data-rel-to attribute of " +
|
"this step. Have a look at the documentation for how to create relative " +
|
"positioning to later shown steps with the help of the goto plugin."
|
);
|
}
|
} else {
|
|
// Step not found
|
window.console.warn(
|
"impress.js rel plugin: \"" + data.relTo + "\" is not a valid step in this " +
|
"impress.js presentation. Please check your markup. Ignoring data-rel-to " +
|
"attribute of this step."
|
);
|
}
|
}
|
|
var step = {
|
x: toNumber( data.x, prev.x ),
|
y: toNumber( data.y, prev.y ),
|
z: toNumber( data.z, prev.z ),
|
relative: {
|
x: toNumberAdvanced( data.relX, prev.relative.x ),
|
y: toNumberAdvanced( data.relY, prev.relative.y ),
|
z: toNumberAdvanced( data.relZ, prev.relative.z )
|
}
|
};
|
|
// Relative position is ignored/zero if absolute is given.
|
// Note that this also has the effect of resetting any inherited relative values.
|
if ( data.x !== undefined ) {
|
step.relative.x = 0;
|
}
|
if ( data.y !== undefined ) {
|
step.relative.y = 0;
|
}
|
if ( data.z !== undefined ) {
|
step.relative.z = 0;
|
}
|
|
// Apply relative position to absolute position, if non-zero
|
// Note that at this point, the relative values contain a number value of pixels.
|
step.x = step.x + step.relative.x;
|
step.y = step.y + step.relative.y;
|
step.z = step.z + step.relative.z;
|
|
return step;
|
};
|
|
var rel = function( root ) {
|
var steps = root.querySelectorAll( ".step" );
|
var prev;
|
startingState[ root.id ] = [];
|
for ( var i = 0; i < steps.length; i++ ) {
|
var el = steps[ i ];
|
startingState[ root.id ].push( {
|
el: el,
|
x: el.getAttribute( "data-x" ),
|
y: el.getAttribute( "data-y" ),
|
z: el.getAttribute( "data-z" )
|
} );
|
var step = computeRelativePositions( el, prev );
|
|
// Apply relative position (if non-zero)
|
el.setAttribute( "data-x", step.x );
|
el.setAttribute( "data-y", step.y );
|
el.setAttribute( "data-z", step.z );
|
prev = step;
|
}
|
};
|
|
// Register the plugin to be called in pre-init phase
|
window.impress.addPreInitPlugin( rel );
|
|
// Register teardown callback to reset the data.x, .y, .z values.
|
document.addEventListener( "impress:init", function( event ) {
|
var root = event.target;
|
event.detail.api.lib.gc.pushCallback( function() {
|
var steps = startingState[ root.id ];
|
var step;
|
while ( step = steps.pop() ) {
|
if ( step.x === null ) {
|
step.el.removeAttribute( "data-x" );
|
} else {
|
step.el.setAttribute( "data-x", step.x );
|
}
|
if ( step.y === null ) {
|
step.el.removeAttribute( "data-y" );
|
} else {
|
step.el.setAttribute( "data-y", step.y );
|
}
|
if ( step.z === null ) {
|
step.el.removeAttribute( "data-z" );
|
} else {
|
step.el.setAttribute( "data-z", step.z );
|
}
|
}
|
delete startingState[ root.id ];
|
} );
|
}, false );
|
} )( document, window );
|
|
|
/**
|
* Resize plugin
|
*
|
* Rescale the presentation after a window resize.
|
*
|
* Copyright 2011-2012 Bartek Szopka (@bartaz)
|
* Released under the MIT license.
|
* ------------------------------------------------
|
* author: Bartek Szopka
|
* version: 0.5.3
|
* url: http://bartaz.github.com/impress.js/
|
* source: http://github.com/bartaz/impress.js/
|
*
|
*/
|
|
/* global document, window */
|
|
( function( document, window ) {
|
"use strict";
|
|
// Wait for impress.js to be initialized
|
document.addEventListener( "impress:init", function( event ) {
|
var api = event.detail.api;
|
|
// Rescale presentation when window is resized
|
api.lib.gc.addEventListener( window, "resize", api.lib.util.throttle( function() {
|
|
// Force going to active step again, to trigger rescaling
|
api.goto( document.querySelector( ".step.active" ), 500 );
|
}, 250 ), false );
|
}, false );
|
|
} )( document, window );
|
|
|
/**
|
* Skip Plugin
|
*
|
* Example:
|
*
|
* <!-- This slide is disabled in presentations, when moving with next()
|
* and prev() commands, but you can still move directly to it, for
|
* example with a url (anything using goto()). -->
|
* <div class="step skip">
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
|
/* global document, window */
|
|
( function( document, window ) {
|
"use strict";
|
var util;
|
|
document.addEventListener( "impress:init", function( event ) {
|
util = event.detail.api.lib.util;
|
}, false );
|
|
var getNextStep = function( el ) {
|
var steps = document.querySelectorAll( ".step" );
|
for ( var i = 0; i < steps.length; i++ ) {
|
if ( steps[ i ] === el ) {
|
if ( i + 1 < steps.length ) {
|
return steps[ i + 1 ];
|
} else {
|
return steps[ 0 ];
|
}
|
}
|
}
|
};
|
var getPrevStep = function( el ) {
|
var steps = document.querySelectorAll( ".step" );
|
for ( var i = steps.length - 1; i >= 0; i-- ) {
|
if ( steps[ i ] === el ) {
|
if ( i - 1 >= 0 ) {
|
return steps[ i - 1 ];
|
} else {
|
return steps[ steps.length - 1 ];
|
}
|
}
|
}
|
};
|
|
var skip = function( event ) {
|
if ( ( !event ) || ( !event.target ) ) {
|
return;
|
}
|
|
if ( event.detail.next.classList.contains( "skip" ) ) {
|
if ( event.detail.reason === "next" ) {
|
|
// Go to the next next step instead
|
event.detail.next = getNextStep( event.detail.next );
|
|
// Recursively call this plugin again, until there's a step not to skip
|
skip( event );
|
} else if ( event.detail.reason === "prev" ) {
|
|
// Go to the previous previous step instead
|
event.detail.next = getPrevStep( event.detail.next );
|
skip( event );
|
}
|
|
// If the new next element has its own transitionDuration, we're responsible for setting
|
// that on the event as well
|
event.detail.transitionDuration = util.toNumber(
|
event.detail.next.dataset.transitionDuration, event.detail.transitionDuration
|
);
|
}
|
};
|
|
// Register the plugin to be called in pre-stepleave phase
|
// The weight makes this plugin run early. This is a good thing, because this plugin calls
|
// itself recursively.
|
window.impress.addPreStepLeavePlugin( skip, 1 );
|
|
} )( document, window );
|
|
|
/**
|
* Stop Plugin
|
*
|
* Example:
|
*
|
* <!-- Stop at this slide.
|
* (For example, when used on the last slide, this prevents the
|
* presentation from wrapping back to the beginning.) -->
|
* <div class="step stop">
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
/* global document, window */
|
( function( document, window ) {
|
"use strict";
|
|
var stop = function( event ) {
|
if ( ( !event ) || ( !event.target ) ) {
|
return;
|
}
|
|
if ( event.target.classList.contains( "stop" ) ) {
|
if ( event.detail.reason === "next" ) {
|
return false;
|
}
|
}
|
};
|
|
// Register the plugin to be called in pre-stepleave phase
|
// The weight makes this plugin run fairly early.
|
window.impress.addPreStepLeavePlugin( stop, 2 );
|
|
} )( document, window );
|
|
|
/**
|
* Substep Plugin
|
*
|
* Copyright 2017 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
|
/* global document, window */
|
|
( function( document, window ) {
|
"use strict";
|
|
// Copied from core impress.js. Good candidate for moving to src/lib/util.js.
|
var triggerEvent = function( el, eventName, detail ) {
|
var event = document.createEvent( "CustomEvent" );
|
event.initCustomEvent( eventName, true, true, detail );
|
el.dispatchEvent( event );
|
};
|
|
var activeStep = null;
|
document.addEventListener( "impress:stepenter", function( event ) {
|
activeStep = event.target;
|
}, false );
|
|
var substep = function( event ) {
|
if ( ( !event ) || ( !event.target ) ) {
|
return;
|
}
|
|
var step = event.target;
|
var el; // Needed by jshint
|
if ( event.detail.reason === "next" ) {
|
el = showSubstepIfAny( step );
|
if ( el ) {
|
|
// Send a message to others, that we aborted a stepleave event.
|
// Autoplay will reload itself from this, as there won't be a stepenter event now.
|
triggerEvent( step, "impress:substep:stepleaveaborted",
|
{ reason: "next", substep: el } );
|
|
// Returning false aborts the stepleave event
|
return false;
|
}
|
}
|
if ( event.detail.reason === "prev" ) {
|
el = hideSubstepIfAny( step );
|
if ( el ) {
|
triggerEvent( step, "impress:substep:stepleaveaborted",
|
{ reason: "prev", substep: el } );
|
return false;
|
}
|
}
|
};
|
|
var showSubstepIfAny = function( step ) {
|
var substeps = step.querySelectorAll( ".substep" );
|
var visible = step.querySelectorAll( ".substep-visible" );
|
if ( substeps.length > 0 ) {
|
return showSubstep( substeps, visible );
|
}
|
};
|
|
var showSubstep = function( substeps, visible ) {
|
if ( visible.length < substeps.length ) {
|
var el = substeps[ visible.length ];
|
el.classList.add( "substep-visible" );
|
return el;
|
}
|
};
|
|
var hideSubstepIfAny = function( step ) {
|
var substeps = step.querySelectorAll( ".substep" );
|
var visible = step.querySelectorAll( ".substep-visible" );
|
if ( substeps.length > 0 ) {
|
return hideSubstep( visible );
|
}
|
};
|
|
var hideSubstep = function( visible ) {
|
if ( visible.length > 0 ) {
|
var el = visible[ visible.length - 1 ];
|
el.classList.remove( "substep-visible" );
|
return el;
|
}
|
};
|
|
// Register the plugin to be called in pre-stepleave phase.
|
// The weight makes this plugin run before other preStepLeave plugins.
|
window.impress.addPreStepLeavePlugin( substep, 1 );
|
|
// When entering a step, in particular when re-entering, make sure that all substeps are hidden
|
// at first
|
document.addEventListener( "impress:stepenter", function( event ) {
|
var step = event.target;
|
var visible = step.querySelectorAll( ".substep-visible" );
|
for ( var i = 0; i < visible.length; i++ ) {
|
visible[ i ].classList.remove( "substep-visible" );
|
}
|
}, false );
|
|
// API for others to reveal/hide next substep ////////////////////////////////////////////////
|
document.addEventListener( "impress:substep:show", function() {
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showSubstepIfAny( activeStep );
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}, false );
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document.addEventListener( "impress:substep:hide", function() {
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hideSubstepIfAny( activeStep );
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}, false );
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} )( document, window );
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|
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/**
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* Support for swipe and tap on touch devices
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*
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* This plugin implements navigation for plugin devices, via swiping left/right,
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* or tapping on the left/right edges of the screen.
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*
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*
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*
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* Copyright 2015: Andrew Dunai (@and3rson)
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* Modified to a plugin, 2016: Henrik Ingo (@henrikingo)
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*
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* MIT License
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*/
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/* global document, window */
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( function( document, window ) {
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"use strict";
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// Touch handler to detect swiping left and right based on window size.
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// If the difference in X change is bigger than 1/20 of the screen width,
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// we simply call an appropriate API function to complete the transition.
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var startX = 0;
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var lastX = 0;
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var lastDX = 0;
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var threshold = window.innerWidth / 20;
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document.addEventListener( "touchstart", function( event ) {
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lastX = startX = event.touches[ 0 ].clientX;
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} );
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document.addEventListener( "touchmove", function( event ) {
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var x = event.touches[ 0 ].clientX;
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var diff = x - startX;
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// To be used in touchend
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lastDX = lastX - x;
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lastX = x;
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window.impress().swipe( diff / window.innerWidth );
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} );
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document.addEventListener( "touchend", function() {
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var totalDiff = lastX - startX;
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if ( Math.abs( totalDiff ) > window.innerWidth / 5 && ( totalDiff * lastDX ) <= 0 ) {
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if ( totalDiff > window.innerWidth / 5 && lastDX <= 0 ) {
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window.impress().prev();
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} else if ( totalDiff < -window.innerWidth / 5 && lastDX >= 0 ) {
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window.impress().next();
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}
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} else if ( Math.abs( lastDX ) > threshold ) {
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if ( lastDX < -threshold ) {
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window.impress().prev();
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} else if ( lastDX > threshold ) {
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window.impress().next();
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}
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} else {
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|
// No movement - move (back) to the current slide
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window.impress().goto( document.querySelector( "#impress .step.active" ) );
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}
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} );
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document.addEventListener( "touchcancel", function() {
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|
// Move (back) to the current slide
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window.impress().goto( document.querySelector( "#impress .step.active" ) );
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} );
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} )( document, window );
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|
/**
|
* Toolbar plugin
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*
|
* This plugin provides a generic graphical toolbar. Other plugins that
|
* want to expose a button or other widget, can add those to this toolbar.
|
*
|
* Using a single consolidated toolbar for all GUI widgets makes it easier
|
* to position and style the toolbar rather than having to do that for lots
|
* of different divs.
|
*
|
*
|
* *** For presentation authors: *****************************************
|
*
|
* To add/activate the toolbar in your presentation, add this div:
|
*
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* <div id="impress-toolbar"></div>
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*
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* Styling the toolbar is left to presentation author. Here's an example CSS:
|
*
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* .impress-enabled div#impress-toolbar {
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* position: fixed;
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* right: 1px;
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* bottom: 1px;
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* opacity: 0.6;
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* }
|
* .impress-enabled div#impress-toolbar > span {
|
* margin-right: 10px;
|
* }
|
*
|
* The [mouse-timeout](../mouse-timeout/README.md) plugin can be leveraged to hide
|
* the toolbar from sight, and only make it visible when mouse is moved.
|
*
|
* body.impress-mouse-timeout div#impress-toolbar {
|
* display: none;
|
* }
|
*
|
*
|
* *** For plugin authors **********************************************
|
*
|
* To add a button to the toolbar, trigger the `impress:toolbar:appendChild`
|
* or `impress:toolbar:insertBefore` events as appropriate. The detail object
|
* should contain following parameters:
|
*
|
* { group : 1, // integer. Widgets with the same group are grouped inside
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* // the same <span> element.
|
* html : "<button>Click</button>", // The html to add.
|
* callback : "mycallback", // Toolbar plugin will trigger event
|
* // `impress:toolbar:added:mycallback` when done.
|
* before: element } // The reference element for an insertBefore() call.
|
*
|
* You should also listen to the `impress:toolbar:added:mycallback` event. At
|
* this point you can find the new widget in the DOM, and for example add an
|
* event listener to it.
|
*
|
* You are free to use any integer for the group. It's ok to leave gaps. It's
|
* ok to co-locate with widgets for another plugin, if you think they belong
|
* together.
|
*
|
* See navigation-ui for an example.
|
*
|
* Copyright 2016 Henrik Ingo (@henrikingo)
|
* Released under the MIT license.
|
*/
|
|
/* global document */
|
|
( function( document ) {
|
"use strict";
|
var toolbar = document.getElementById( "impress-toolbar" );
|
var groups = [];
|
|
/**
|
* Get the span element that is a child of toolbar, identified by index.
|
*
|
* If span element doesn't exist yet, it is created.
|
*
|
* Note: Because of Run-to-completion, this is not a race condition.
|
* https://developer.mozilla.org/en/docs/Web/JavaScript/EventLoop#Run-to-completion
|
*
|
* :param: index Method will return the element <span id="impress-toolbar-group-{index}">
|
*/
|
var getGroupElement = function( index ) {
|
var id = "impress-toolbar-group-" + index;
|
if ( !groups[ index ] ) {
|
groups[ index ] = document.createElement( "span" );
|
groups[ index ].id = id;
|
var nextIndex = getNextGroupIndex( index );
|
if ( nextIndex === undefined ) {
|
toolbar.appendChild( groups[ index ] );
|
} else {
|
toolbar.insertBefore( groups[ index ], groups[ nextIndex ] );
|
}
|
}
|
return groups[ index ];
|
};
|
|
/**
|
* Get the span element from groups[] that is immediately after given index.
|
*
|
* This can be used to find the reference node for an insertBefore() call.
|
* If no element exists at a larger index, returns undefined. (In this case,
|
* you'd use appendChild() instead.)
|
*
|
* Note that index needn't itself exist in groups[].
|
*/
|
var getNextGroupIndex = function( index ) {
|
var i = index + 1;
|
while ( !groups[ i ] && i < groups.length ) {
|
i++;
|
}
|
if ( i < groups.length ) {
|
return i;
|
}
|
};
|
|
// API
|
// Other plugins can add and remove buttons by sending them as events.
|
// In return, toolbar plugin will trigger events when button was added.
|
if ( toolbar ) {
|
/**
|
* Append a widget inside toolbar span element identified by given group index.
|
*
|
* :param: e.detail.group integer specifying the span element where widget will be placed
|
* :param: e.detail.element a dom element to add to the toolbar
|
*/
|
toolbar.addEventListener( "impress:toolbar:appendChild", function( e ) {
|
var group = getGroupElement( e.detail.group );
|
group.appendChild( e.detail.element );
|
} );
|
|
/**
|
* Add a widget to toolbar using insertBefore() DOM method.
|
*
|
* :param: e.detail.before the reference dom element, before which new element is added
|
* :param: e.detail.element a dom element to add to the toolbar
|
*/
|
toolbar.addEventListener( "impress:toolbar:insertBefore", function( e ) {
|
toolbar.insertBefore( e.detail.element, e.detail.before );
|
} );
|
|
/**
|
* Remove the widget in e.detail.remove.
|
*/
|
toolbar.addEventListener( "impress:toolbar:removeWidget", function( e ) {
|
toolbar.removeChild( e.detail.remove );
|
} );
|
|
document.addEventListener( "impress:init", function( event ) {
|
var api = event.detail.api;
|
api.lib.gc.pushCallback( function() {
|
toolbar.innerHTML = "";
|
groups = [];
|
} );
|
} );
|
} // If toolbar
|
|
} )( document );
|
