initial upload
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453
js/bookblock.js
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453
js/bookblock.js
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/**
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* bookblock.js v2.0.1
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* http://www.codrops.com
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*
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* Licensed under the MIT license.
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* http://www.opensource.org/licenses/mit-license.php
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*
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* Copyright 2013, Codrops
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* http://www.codrops.com
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*/
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;( function( window ) {
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'use strict';
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// global
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var document = window.document,
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Modernizr = window.Modernizr;
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// https://gist.github.com/edankwan/4389601
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Modernizr.addTest('csstransformspreserve3d', function () {
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var prop = Modernizr.prefixed('transformStyle');
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var val = 'preserve-3d';
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var computedStyle;
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if(!prop) return false;
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prop = prop.replace(/([A-Z])/g, function(str,m1){ return '-' + m1.toLowerCase(); }).replace(/^ms-/,'-ms-');
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Modernizr.testStyles('#modernizr{' + prop + ':' + val + ';}', function (el, rule) {
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computedStyle = window.getComputedStyle ? getComputedStyle(el, null).getPropertyValue(prop) : '';
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});
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return (computedStyle === val);
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});
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function extend( a, b ) {
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for( var key in b ) {
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if( b.hasOwnProperty( key ) ) {
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a[key] = b[key];
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}
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}
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return a;
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}
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function BookBlock( el, options ) {
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this.el = el;
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this.options = extend( this.defaults, options );
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this._init();
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}
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BookBlock.prototype = {
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defaults : {
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// vertical or horizontal flip
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orientation : 'vertical',
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// ltr (left to right) or rtl (right to left)
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direction : 'ltr',
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// speed for the flip transition in ms
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speed : 1000,
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// easing for the flip transition
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easing : 'ease-in-out',
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// if set to true, both the flipping page and the sides will have an overlay to simulate shadows
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shadows : true,
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// opacity value for the "shadow" on both sides (when the flipping page is over it)
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// value : 0.1 - 1
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shadowSides : 0.2,
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// opacity value for the "shadow" on the flipping page (while it is flipping)
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// value : 0.1 - 1
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shadowFlip : 0.1,
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// if we should show the first item after reaching the end
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circular : false,
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// if we want to specify a selector that triggers the next() function. example: ´#bb-nav-next´
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nextEl : '',
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// if we want to specify a selector that triggers the prev() function
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prevEl : '',
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// autoplay. If true it overwrites the circular option to true
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autoplay : false,
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// time (ms) between page switch, if autoplay is true
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interval : 3000,
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// callback after the flip transition
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// old is the index of the previous item
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// page is the current item´s index
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// isLimit is true if the current page is the last one (or the first one)
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onEndFlip : function(old, page, isLimit) { return false; },
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// callback before the flip transition
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// page is the current item´s index
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onBeforeFlip : function(page) { return false; }
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},
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_init : function() {
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// orientation class
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this.el.className += ' bb-' + this.options.orientation;
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// items
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this.items = Array.prototype.slice.call( this.el.querySelectorAll( '.bb-item' ) );
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// total items
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this.itemsCount = this.items.length;
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// current item´s index
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this.currentIdx = 0;
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// previous item´s index
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this.previous = -1;
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// show first item
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this.current = this.items[ this.currentIdx ];
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this.current.style.display = 'block';
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// get width of this.el
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// this will be necessary to create the flipping layout
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this.elWidth = this.el.offsetWidth;
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var transEndEventNames = {
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'WebkitTransition': 'webkitTransitionEnd',
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'MozTransition': 'transitionend',
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'OTransition': 'oTransitionEnd',
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'msTransition': 'MSTransitionEnd',
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'transition': 'transitionend'
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};
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this.transEndEventName = transEndEventNames[Modernizr.prefixed( 'transition' )];
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// support css 3d transforms && css transitions && Modernizr.csstransformspreserve3d
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this.support = Modernizr.csstransitions && Modernizr.csstransforms3d && Modernizr.csstransformspreserve3d;
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// initialize/bind some events
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this._initEvents();
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// start slideshow
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if ( this.options.autoplay ) {
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this.options.circular = true;
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this._startSlideshow();
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}
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},
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_initEvents : function() {
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var self = this;
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if ( this.options.nextEl !== '' ) {
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document.querySelector( this.options.nextEl ).addEventListener( 'click', function() { self._action( 'next' ); return false; } );
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document.querySelector( this.options.nextEl ).addEventListener( 'touchstart', function() { self._action( 'next' ); return false; } );
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}
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if ( this.options.prevEl !== '' ) {
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document.querySelector( this.options.prevEl ).addEventListener( 'click', function() { self._action( 'prev' ); return false; } );
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document.querySelector( this.options.prevEl ).addEventListener( 'touchstart', function() { self._action( 'prev' ); return false; } );
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}
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window.addEventListener( 'resize', function() { self._resizeHandler(); } );
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},
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_action : function( dir, page ) {
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this._stopSlideshow();
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this._navigate( dir, page );
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},
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_navigate : function( dir, page ) {
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if ( this.isAnimating ) {
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return false;
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}
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// callback trigger
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this.options.onBeforeFlip( this.currentIdx );
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this.isAnimating = true;
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// update current value
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this.current = this.items[ this.currentIdx ];
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if ( page !== undefined ) {
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this.currentIdx = page;
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}
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else if ( dir === 'next' && this.options.direction === 'ltr' || dir === 'prev' && this.options.direction === 'rtl' ) {
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if ( !this.options.circular && this.currentIdx === this.itemsCount - 1 ) {
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this.end = true;
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}
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else {
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this.previous = this.currentIdx;
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this.currentIdx = this.currentIdx < this.itemsCount - 1 ? this.currentIdx + 1 : 0;
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}
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}
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else if ( dir === 'prev' && this.options.direction === 'ltr' || dir === 'next' && this.options.direction === 'rtl' ) {
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if ( !this.options.circular && this.currentIdx === 0 ) {
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this.end = true;
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}
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else {
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this.previous = this.currentIdx;
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this.currentIdx = this.currentIdx > 0 ? this.currentIdx - 1 : this.itemsCount - 1;
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}
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}
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this.nextItem = !this.options.circular && this.end ? this.current : this.items[ this.currentIdx ];
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this.items.forEach( function( el, i ) { el.style.display = 'none'; } );
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if ( !this.support ) {
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this._layoutNoSupport( dir );
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} else {
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this._layout( dir );
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}
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},
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_layoutNoSupport : function(dir) {
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this.nextItem.style.display = 'block';
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this.end = false;
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this.isAnimating = false;
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var isLimit = dir === 'next' && this.currentIdx === this.itemsCount - 1 || dir === 'prev' && this.currentIdx === 0;
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// callback trigger
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this.options.onEndFlip( this.previous, this.currentIdx, isLimit );
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},
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// creates the necessary layout for the 3d structure and triggers the transitions
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_layout : function(dir) {
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var self = this,
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// basic structure: 1 element for the left side.
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s_left = this._addSide( 'left', dir ),
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// 1 element for the flipping/middle page
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s_middle = this._addSide( 'middle', dir ),
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// 1 element for the right side
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s_right = this._addSide( 'right', dir ),
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// overlays
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o_left = s_left.querySelector( 'div.bb-overlay' ),
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o_middle_f = s_middle.querySelector( 'div.bb-front' ).querySelector( 'div.bb-flipoverlay' ),
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o_middle_b = s_middle.querySelector( 'div.bb-back' ).querySelector( 'div.bb-flipoverlay' ),
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o_right = s_right.querySelector( 'div.bb-overlay' ),
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speed = this.end ? 400 : this.options.speed;
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var fChild = this.items[0];
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this.el.insertBefore( s_left, fChild );
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this.el.insertBefore( s_middle, fChild );
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this.el.insertBefore( s_right, fChild );
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s_left.style.zIndex = 102;
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s_middle.style.zIndex = 103;
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s_right.style.zIndex = 101;
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s_middle.style.transitionDuration = speed + 'ms';
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s_middle.style.transitionTimingFunction = this.options.easing;
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s_middle.addEventListener( this.transEndEventName, function( event ) {
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if ( (" " + event.target.className + " ").replace(/[\n\t]/g, " ").indexOf(" bb-page ") > -1 ) {
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Array.prototype.slice.call( self.el.querySelectorAll( '.bb-page' ) ).forEach( function( el, i ) {
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self.el.removeChild( el );
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} );
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self.nextItem.style.display = 'block';
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self.end = false;
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self.isAnimating = false;
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var isLimit = dir === 'next' && self.currentIdx === self.itemsCount - 1 || dir === 'prev' && self.currentIdx === 0;
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// callback trigger
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self.options.onEndFlip( self.previous, self.currentIdx, isLimit );
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}
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} );
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if ( dir === 'prev' ) {
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s_middle.className += ' bb-flip-initial';
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}
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// overlays
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if ( this.options.shadows && !this.end ) {
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if( dir === 'next' ) {
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o_middle_f.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear';
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o_middle_b.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear' + ' ' + this.options.speed / 2 + 'ms';
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o_middle_b.style.opacity = this.options.shadowFlip;
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o_left.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear' + ' ' + this.options.speed / 2 + 'ms';
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o_right.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear';
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o_right.style.opacity = this.options.shadowSides;
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}
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else if( dir === 'prev' ) {
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o_middle_f.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear' + ' ' + this.options.speed / 2 + 'ms';
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o_middle_f.style.opacity = this.options.shadowFlip;
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o_middle_b.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear';
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o_left.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear';
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o_left.style.opacity = this.options.shadowSides;
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o_right.style.transition = 'opacity ' + this.options.speed / 2 + 'ms ' + 'linear' + ' ' + this.options.speed / 2 + 'ms';
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}
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}
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setTimeout( function() {
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// first && last pages lift slightly up when we can't go further
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s_middle.className += self.end ? ' bb-flip-' + dir + '-end' : ' bb-flip-' + dir;
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// overlays
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if ( self.options.shadows && !self.end ) {
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o_middle_f.style.opacity = dir === 'next' ? self.options.shadowFlip : 0;
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o_middle_b.style.opacity = dir === 'next' ? 0 : self.options.shadowFlip;
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o_left.style.opacity = dir === 'next' ? self.options.shadowSides : 0;
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o_right.style.opacity = dir === 'next' ? 0 : self.options.shadowSides;
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}
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}, 25 );
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},
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// adds the necessary sides (bb-page) to the layout
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_addSide : function( side, dir ) {
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var sideEl = document.createElement( 'div' );
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sideEl.className = 'bb-page';
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switch (side) {
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case 'left':
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/*
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<div class="bb-page" style="z-index:102;">
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<div class="bb-back">
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<div class="bb-outer">
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<div class="bb-content">
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<div class="bb-inner">
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dir==='next' ? [content of current page] : [content of next page]
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</div>
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</div>
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<div class="bb-overlay"></div>
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</div>
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</div>
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</div>
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*/
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var inner = dir === 'next' ? this.current.innerHTML : this.nextItem.innerHTML;
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sideEl.innerHTML = '<div class="bb-back"><div class="bb-outer"><div class="bb-content"><div class="bb-inner">' + inner + '</div></div><div class="bb-overlay"></div></div></div>';
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break;
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case 'middle':
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/*
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<div class="bb-page" style="z-index:103;">
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<div class="bb-front">
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<div class="bb-outer">
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<div class="bb-content">
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<div class="bb-inner">
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dir==='next' ? [content of current page] : [content of next page]
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</div>
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</div>
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<div class="bb-flipoverlay"></div>
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</div>
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</div>
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<div class="bb-back">
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<div class="bb-outer">
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<div class="bb-content">
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<div class="bb-inner">
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dir==='next' ? [content of next page] : [content of current page]
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</div>
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</div>
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<div class="bb-flipoverlay"></div>
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</div>
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</div>
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</div>
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*/
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var frontinner = dir === 'next' ? this.current.innerHTML : this.nextItem.innerHTML;
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var backinner = dir === 'next' ? this.nextItem.innerHTML : this.current.innerHTML;
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sideEl.innerHTML = '<div class="bb-front"><div class="bb-outer"><div class="bb-content"><div class="bb-inner">' + frontinner + '</div></div><div class="bb-flipoverlay"></div></div></div><div class="bb-back"><div class="bb-outer"><div class="bb-content" style="width:' + this.elWidth + 'px"><div class="bb-inner">' + backinner + '</div></div><div class="bb-flipoverlay"></div></div></div>';
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break;
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case 'right':
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/*
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<div class="bb-page" style="z-index:101;">
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<div class="bb-front">
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<div class="bb-outer">
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<div class="bb-content">
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<div class="bb-inner">
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dir==='next' ? [content of next page] : [content of current page]
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</div>
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</div>
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<div class="bb-overlay"></div>
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</div>
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</div>
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</div>
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*/
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var inner = dir === 'next' ? this.nextItem.innerHTML : this.current.innerHTML;
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sideEl.innerHTML = '<div class="bb-front"><div class="bb-outer"><div class="bb-content"><div class="bb-inner">' + inner + '</div></div><div class="bb-overlay"></div></div></div>';
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break;
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}
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return sideEl;
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},
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_startSlideshow : function() {
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var self = this;
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this.slideshow = setTimeout( function() {
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self._navigate( 'next' );
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if ( self.options.autoplay ) {
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self._startSlideshow();
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}
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}, this.options.interval );
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},
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_stopSlideshow : function() {
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if ( this.options.autoplay ) {
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clearTimeout( this.slideshow );
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this.options.autoplay = false;
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}
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},
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// public method: flips next
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next : function() {
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this._action( this.options.direction === 'ltr' ? 'next' : 'prev' );
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},
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// public method: flips back
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prev : function() {
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this._action( this.options.direction === 'ltr' ? 'prev' : 'next' );
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},
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// public method: goes to a specific page
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jump : function( page ) {
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page -= 1;
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if ( page === this.currentIdx || page >= this.itemsCount || page < 0 ) {
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return false;
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}
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var dir;
|
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if( this.options.direction === 'ltr' ) {
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dir = page > this.currentIdx ? 'next' : 'prev';
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}
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||||
else {
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dir = page > this.currentIdx ? 'prev' : 'next';
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}
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this._action( dir, page );
|
||||
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},
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// public method: goes to the last page
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||||
last : function() {
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this.jump( this.itemsCount );
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},
|
||||
// public method: goes to the first page
|
||||
first : function() {
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this.jump( 1 );
|
||||
},
|
||||
// taken from https://github.com/desandro/vanilla-masonry/blob/master/masonry.js by David DeSandro
|
||||
// original debounce by John Hann
|
||||
// http://unscriptable.com/index.php/2009/03/20/debouncing-javascript-methods/
|
||||
_resizeHandler : function() {
|
||||
var self = this;
|
||||
function delayed() {
|
||||
self._resize();
|
||||
self._resizeTimeout = null;
|
||||
}
|
||||
if ( this._resizeTimeout ) {
|
||||
clearTimeout( this._resizeTimeout );
|
||||
}
|
||||
this._resizeTimeout = setTimeout( delayed, 50 );
|
||||
},
|
||||
_resize : function() {
|
||||
// update width value
|
||||
this.elWidth = this.el.offsetWidth;
|
||||
},
|
||||
// public method: check if isAnimating is true
|
||||
isActive: function() {
|
||||
return this.isAnimating;
|
||||
},
|
||||
// public method: dynamically adds new elements
|
||||
// call this method after inserting new "bb-item" elements inside the BookBlock
|
||||
update : function () {
|
||||
var currentItem = this.items[ this.current ];
|
||||
this.items = Array.prototype.slice.call( this.el.querySelectorAll( '.bb-item' ) );
|
||||
this.itemsCount = this.items.length;
|
||||
this.currentIdx = this.items.indexOf( currentItem );
|
||||
},
|
||||
destroy : function() {
|
||||
if ( this.options.autoplay ) {
|
||||
this._stopSlideshow();
|
||||
}
|
||||
this.el.className = this.el.className.replace(new RegExp("(^|\\s+)" + 'bb-' + this.options.orientation + "(\\s+|$)"), ' ');
|
||||
this.items.forEach( function( el, i ) { el.style.display = 'block'; } );
|
||||
|
||||
if ( this.options.nextEl !== '' ) {
|
||||
this.options.nextEl.removeEventListener( 'click' );
|
||||
this.options.nextEl.removeEventListener( 'touchstart' );
|
||||
}
|
||||
|
||||
if ( this.options.prevEl !== '' ) {
|
||||
this.options.prevEl.removeEventListener( 'click' );
|
||||
this.options.prevEl.removeEventListener( 'touchstart' );
|
||||
}
|
||||
|
||||
window.removeEventListener( 'debouncedresize' );
|
||||
}
|
||||
}
|
||||
|
||||
// add to global namespace
|
||||
window.BookBlock = BookBlock;
|
||||
|
||||
} )( window );
|
||||
Reference in New Issue
Block a user