1988 lines
48 KiB
JavaScript
1988 lines
48 KiB
JavaScript
/*! iScroll v5.1.1 ~ (c) 2008-2014 Matteo Spinelli ~ http://cubiq.org/license */
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(function (window, document, Math) {
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var rAF = window.requestAnimationFrame ||
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window.webkitRequestAnimationFrame ||
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window.mozRequestAnimationFrame ||
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window.oRequestAnimationFrame ||
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window.msRequestAnimationFrame ||
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function (callback) { window.setTimeout(callback, 1000 / 60); };
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var utils = (function () {
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var me = {};
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var _elementStyle = document.createElement('div').style;
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var _vendor = (function () {
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var vendors = ['t', 'webkitT', 'MozT', 'msT', 'OT'],
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transform,
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i = 0,
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l = vendors.length;
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for ( ; i < l; i++ ) {
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transform = vendors[i] + 'ransform';
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if ( transform in _elementStyle ) return vendors[i].substr(0, vendors[i].length-1);
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}
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return false;
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})();
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function _prefixStyle (style) {
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if ( _vendor === false ) return false;
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if ( _vendor === '' ) return style;
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return _vendor + style.charAt(0).toUpperCase() + style.substr(1);
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}
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me.getTime = Date.now || function getTime () { return new Date().getTime(); };
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me.extend = function (target, obj) {
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for ( var i in obj ) {
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target[i] = obj[i];
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}
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};
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me.addEvent = function (el, type, fn, capture) {
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el.addEventListener(type, fn, !!capture);
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};
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me.removeEvent = function (el, type, fn, capture) {
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el.removeEventListener(type, fn, !!capture);
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};
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me.momentum = function (current, start, time, lowerMargin, wrapperSize, deceleration) {
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var distance = current - start,
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speed = Math.abs(distance) / time,
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destination,
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duration;
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deceleration = deceleration === undefined ? 0.0006 : deceleration;
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destination = current + ( speed * speed ) / ( 2 * deceleration ) * ( distance < 0 ? -1 : 1 );
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duration = speed / deceleration;
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if ( destination < lowerMargin ) {
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destination = wrapperSize ? lowerMargin - ( wrapperSize / 2.5 * ( speed / 8 ) ) : lowerMargin;
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distance = Math.abs(destination - current);
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duration = distance / speed;
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} else if ( destination > 0 ) {
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destination = wrapperSize ? wrapperSize / 2.5 * ( speed / 8 ) : 0;
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distance = Math.abs(current) + destination;
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duration = distance / speed;
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}
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return {
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destination: Math.round(destination),
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duration: duration
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};
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};
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var _transform = _prefixStyle('transform');
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me.extend(me, {
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hasTransform: _transform !== false,
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hasPerspective: _prefixStyle('perspective') in _elementStyle,
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hasTouch: 'ontouchstart' in window,
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hasPointer: navigator.msPointerEnabled,
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hasTransition: _prefixStyle('transition') in _elementStyle
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});
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// This should find all Android browsers lower than build 535.19 (both stock browser and webview)
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me.isBadAndroid = /Android /.test(window.navigator.appVersion) && !(/Chrome\/\d/.test(window.navigator.appVersion));
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me.extend(me.style = {}, {
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transform: _transform,
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transitionTimingFunction: _prefixStyle('transitionTimingFunction'),
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transitionDuration: _prefixStyle('transitionDuration'),
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transitionDelay: _prefixStyle('transitionDelay'),
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transformOrigin: _prefixStyle('transformOrigin')
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});
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me.hasClass = function (e, c) {
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var re = new RegExp("(^|\\s)" + c + "(\\s|$)");
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return re.test(e.className);
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};
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me.addClass = function (e, c) {
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if ( me.hasClass(e, c) ) {
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return;
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}
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var newclass = e.className.split(' ');
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newclass.push(c);
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e.className = newclass.join(' ');
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};
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me.removeClass = function (e, c) {
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if ( !me.hasClass(e, c) ) {
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return;
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}
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var re = new RegExp("(^|\\s)" + c + "(\\s|$)", 'g');
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e.className = e.className.replace(re, ' ');
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};
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me.offset = function (el) {
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var left = -el.offsetLeft,
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top = -el.offsetTop;
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// jshint -W084
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while (el = el.offsetParent) {
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left -= el.offsetLeft;
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top -= el.offsetTop;
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}
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// jshint +W084
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return {
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left: left,
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top: top
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};
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};
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me.preventDefaultException = function (el, exceptions) {
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for ( var i in exceptions ) {
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if ( exceptions[i].test(el[i]) ) {
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return true;
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}
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}
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return false;
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};
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me.extend(me.eventType = {}, {
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touchstart: 1,
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touchmove: 1,
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touchend: 1,
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mousedown: 2,
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mousemove: 2,
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mouseup: 2,
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MSPointerDown: 3,
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MSPointerMove: 3,
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MSPointerUp: 3
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});
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me.extend(me.ease = {}, {
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quadratic: {
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style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
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fn: function (k) {
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return k * ( 2 - k );
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}
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},
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circular: {
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style: 'cubic-bezier(0.1, 0.57, 0.1, 1)', // Not properly "circular" but this looks better, it should be (0.075, 0.82, 0.165, 1)
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fn: function (k) {
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return Math.sqrt( 1 - ( --k * k ) );
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}
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},
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back: {
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style: 'cubic-bezier(0.175, 0.885, 0.32, 1.275)',
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fn: function (k) {
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var b = 4;
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return ( k = k - 1 ) * k * ( ( b + 1 ) * k + b ) + 1;
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}
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},
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bounce: {
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style: '',
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fn: function (k) {
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if ( ( k /= 1 ) < ( 1 / 2.75 ) ) {
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return 7.5625 * k * k;
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} else if ( k < ( 2 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
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} else if ( k < ( 2.5 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
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} else {
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return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
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}
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}
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},
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elastic: {
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style: '',
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fn: function (k) {
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var f = 0.22,
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e = 0.4;
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if ( k === 0 ) { return 0; }
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if ( k == 1 ) { return 1; }
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return ( e * Math.pow( 2, - 10 * k ) * Math.sin( ( k - f / 4 ) * ( 2 * Math.PI ) / f ) + 1 );
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}
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}
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});
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me.tap = function (e, eventName) {
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var ev = document.createEvent('Event');
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ev.initEvent(eventName, true, true);
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ev.pageX = e.pageX;
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ev.pageY = e.pageY;
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e.target.dispatchEvent(ev);
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};
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me.click = function (e) {
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var target = e.target,
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ev;
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if ( !(/(SELECT|INPUT|TEXTAREA)/i).test(target.tagName) ) {
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ev = document.createEvent('MouseEvents');
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ev.initMouseEvent('click', true, true, e.view, 1,
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target.screenX, target.screenY, target.clientX, target.clientY,
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e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
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0, null);
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ev._constructed = true;
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target.dispatchEvent(ev);
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}
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};
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return me;
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})();
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function IScroll (el, options) {
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this.wrapper = typeof el == 'string' ? document.querySelector(el) : el;
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this.scroller = this.wrapper.children[0];
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this.scrollerStyle = this.scroller.style; // cache style for better performance
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this.options = {
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resizeScrollbars: true,
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mouseWheelSpeed: 20,
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snapThreshold: 0.334,
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// INSERT POINT: OPTIONS
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startX: 0,
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startY: 0,
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scrollY: true,
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directionLockThreshold: 5,
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momentum: true,
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bounce: true,
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bounceTime: 600,
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bounceEasing: '',
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preventDefault: true,
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preventDefaultException: { tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/ },
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HWCompositing: true,
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useTransition: true,
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useTransform: true
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};
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for ( var i in options ) {
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this.options[i] = options[i];
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}
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// Normalize options
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this.translateZ = this.options.HWCompositing && utils.hasPerspective ? ' translateZ(0)' : '';
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this.options.useTransition = utils.hasTransition && this.options.useTransition;
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this.options.useTransform = utils.hasTransform && this.options.useTransform;
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this.options.eventPassthrough = this.options.eventPassthrough === true ? 'vertical' : this.options.eventPassthrough;
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this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault;
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// If you want eventPassthrough I have to lock one of the axes
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this.options.scrollY = this.options.eventPassthrough == 'vertical' ? false : this.options.scrollY;
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this.options.scrollX = this.options.eventPassthrough == 'horizontal' ? false : this.options.scrollX;
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// With eventPassthrough we also need lockDirection mechanism
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this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough;
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this.options.directionLockThreshold = this.options.eventPassthrough ? 0 : this.options.directionLockThreshold;
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this.options.bounceEasing = typeof this.options.bounceEasing == 'string' ? utils.ease[this.options.bounceEasing] || utils.ease.circular : this.options.bounceEasing;
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this.options.resizePolling = this.options.resizePolling === undefined ? 60 : this.options.resizePolling;
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if ( this.options.tap === true ) {
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this.options.tap = 'tap';
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}
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if ( this.options.shrinkScrollbars == 'scale' ) {
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this.options.useTransition = false;
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}
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this.options.invertWheelDirection = this.options.invertWheelDirection ? -1 : 1;
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// INSERT POINT: NORMALIZATION
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// Some defaults
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this.x = 0;
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this.y = 0;
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this.directionX = 0;
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this.directionY = 0;
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this._events = {};
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// INSERT POINT: DEFAULTS
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this._init();
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this.refresh();
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this.scrollTo(this.options.startX, this.options.startY);
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this.enable();
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}
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IScroll.prototype = {
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version: '5.1.1',
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_init: function () {
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this._initEvents();
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if ( this.options.scrollbars || this.options.indicators ) {
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this._initIndicators();
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}
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if ( this.options.mouseWheel ) {
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this._initWheel();
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}
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if ( this.options.snap ) {
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this._initSnap();
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}
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if ( this.options.keyBindings ) {
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this._initKeys();
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}
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// INSERT POINT: _init
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},
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destroy: function () {
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this._initEvents(true);
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this._execEvent('destroy');
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},
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_transitionEnd: function (e) {
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if ( e.target != this.scroller || !this.isInTransition ) {
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return;
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}
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this._transitionTime();
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if ( !this.resetPosition(this.options.bounceTime) ) {
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this.isInTransition = false;
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this._execEvent('scrollEnd');
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}
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},
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_start: function (e) {
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// React to left mouse button only
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if ( utils.eventType[e.type] != 1 ) {
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if ( e.button !== 0 ) {
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return;
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}
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}
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if ( !this.enabled || (this.initiated && utils.eventType[e.type] !== this.initiated) ) {
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return;
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}
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if ( this.options.preventDefault && !utils.isBadAndroid && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
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e.preventDefault();
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}
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var point = e.touches ? e.touches[0] : e,
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pos;
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this.initiated = utils.eventType[e.type];
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this.moved = false;
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this.distX = 0;
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this.distY = 0;
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this.directionX = 0;
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this.directionY = 0;
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this.directionLocked = 0;
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this._transitionTime();
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this.startTime = utils.getTime();
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if ( this.options.useTransition && this.isInTransition ) {
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this.isInTransition = false;
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pos = this.getComputedPosition();
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this._translate(Math.round(pos.x), Math.round(pos.y));
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this._execEvent('scrollEnd');
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} else if ( !this.options.useTransition && this.isAnimating ) {
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this.isAnimating = false;
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this._execEvent('scrollEnd');
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}
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this.startX = this.x;
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this.startY = this.y;
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this.absStartX = this.x;
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this.absStartY = this.y;
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this.pointX = point.pageX;
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this.pointY = point.pageY;
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this._execEvent('beforeScrollStart');
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},
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_move: function (e) {
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if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
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return;
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}
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if ( this.options.preventDefault ) { // increases performance on Android? TODO: check!
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e.preventDefault();
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}
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var point = e.touches ? e.touches[0] : e,
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deltaX = point.pageX - this.pointX,
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deltaY = point.pageY - this.pointY,
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timestamp = utils.getTime(),
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newX, newY,
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absDistX, absDistY;
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this.pointX = point.pageX;
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this.pointY = point.pageY;
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this.distX += deltaX;
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this.distY += deltaY;
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absDistX = Math.abs(this.distX);
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absDistY = Math.abs(this.distY);
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// We need to move at least 10 pixels for the scrolling to initiate
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if ( timestamp - this.endTime > 300 && (absDistX < 10 && absDistY < 10) ) {
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return;
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}
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// If you are scrolling in one direction lock the other
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if ( !this.directionLocked && !this.options.freeScroll ) {
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if ( absDistX > absDistY + this.options.directionLockThreshold ) {
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this.directionLocked = 'h'; // lock horizontally
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} else if ( absDistY >= absDistX + this.options.directionLockThreshold ) {
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this.directionLocked = 'v'; // lock vertically
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} else {
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this.directionLocked = 'n'; // no lock
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}
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}
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if ( this.directionLocked == 'h' ) {
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if ( this.options.eventPassthrough == 'vertical' ) {
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e.preventDefault();
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} else if ( this.options.eventPassthrough == 'horizontal' ) {
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this.initiated = false;
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return;
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}
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deltaY = 0;
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} else if ( this.directionLocked == 'v' ) {
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if ( this.options.eventPassthrough == 'horizontal' ) {
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e.preventDefault();
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} else if ( this.options.eventPassthrough == 'vertical' ) {
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this.initiated = false;
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return;
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}
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deltaX = 0;
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}
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deltaX = this.hasHorizontalScroll ? deltaX : 0;
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deltaY = this.hasVerticalScroll ? deltaY : 0;
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newX = this.x + deltaX;
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newY = this.y + deltaY;
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// Slow down if outside of the boundaries
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if ( newX > 0 || newX < this.maxScrollX ) {
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newX = this.options.bounce ? this.x + deltaX / 3 : newX > 0 ? 0 : this.maxScrollX;
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}
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if ( newY > 0 || newY < this.maxScrollY ) {
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newY = this.options.bounce ? this.y + deltaY / 3 : newY > 0 ? 0 : this.maxScrollY;
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}
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this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
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this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;
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if ( !this.moved ) {
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this._execEvent('scrollStart');
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}
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this.moved = true;
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this._translate(newX, newY);
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/* REPLACE START: _move */
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if ( timestamp - this.startTime > 300 ) {
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this.startTime = timestamp;
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this.startX = this.x;
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this.startY = this.y;
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}
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/* REPLACE END: _move */
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},
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_end: function (e) {
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if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
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return;
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}
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if ( this.options.preventDefault && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
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e.preventDefault();
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}
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var point = e.changedTouches ? e.changedTouches[0] : e,
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momentumX,
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momentumY,
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duration = utils.getTime() - this.startTime,
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newX = Math.round(this.x),
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newY = Math.round(this.y),
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distanceX = Math.abs(newX - this.startX),
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distanceY = Math.abs(newY - this.startY),
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time = 0,
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easing = '';
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this.isInTransition = 0;
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this.initiated = 0;
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this.endTime = utils.getTime();
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|
|
|
// reset if we are outside of the boundaries
|
|
if ( this.resetPosition(this.options.bounceTime) ) {
|
|
return;
|
|
}
|
|
|
|
this.scrollTo(newX, newY); // ensures that the last position is rounded
|
|
|
|
// we scrolled less than 10 pixels
|
|
if ( !this.moved ) {
|
|
if ( this.options.tap ) {
|
|
utils.tap(e, this.options.tap);
|
|
}
|
|
|
|
if ( this.options.click ) {
|
|
utils.click(e);
|
|
}
|
|
|
|
this._execEvent('scrollCancel');
|
|
return;
|
|
}
|
|
|
|
if ( this._events.flick && duration < 200 && distanceX < 100 && distanceY < 100 ) {
|
|
this._execEvent('flick');
|
|
return;
|
|
}
|
|
|
|
// start momentum animation if needed
|
|
if ( this.options.momentum && duration < 300 ) {
|
|
momentumX = this.hasHorizontalScroll ? utils.momentum(this.x, this.startX, duration, this.maxScrollX, this.options.bounce ? this.wrapperWidth : 0, this.options.deceleration) : { destination: newX, duration: 0 };
|
|
momentumY = this.hasVerticalScroll ? utils.momentum(this.y, this.startY, duration, this.maxScrollY, this.options.bounce ? this.wrapperHeight : 0, this.options.deceleration) : { destination: newY, duration: 0 };
|
|
newX = momentumX.destination;
|
|
newY = momentumY.destination;
|
|
time = Math.max(momentumX.duration, momentumY.duration);
|
|
this.isInTransition = 1;
|
|
}
|
|
|
|
|
|
if ( this.options.snap ) {
|
|
var snap = this._nearestSnap(newX, newY);
|
|
this.currentPage = snap;
|
|
time = this.options.snapSpeed || Math.max(
|
|
Math.max(
|
|
Math.min(Math.abs(newX - snap.x), 1000),
|
|
Math.min(Math.abs(newY - snap.y), 1000)
|
|
), 300);
|
|
newX = snap.x;
|
|
newY = snap.y;
|
|
|
|
this.directionX = 0;
|
|
this.directionY = 0;
|
|
easing = this.options.bounceEasing;
|
|
}
|
|
|
|
// INSERT POINT: _end
|
|
|
|
if ( newX != this.x || newY != this.y ) {
|
|
// change easing function when scroller goes out of the boundaries
|
|
if ( newX > 0 || newX < this.maxScrollX || newY > 0 || newY < this.maxScrollY ) {
|
|
easing = utils.ease.quadratic;
|
|
}
|
|
|
|
this.scrollTo(newX, newY, time, easing);
|
|
return;
|
|
}
|
|
|
|
this._execEvent('scrollEnd');
|
|
},
|
|
|
|
_resize: function () {
|
|
var that = this;
|
|
|
|
clearTimeout(this.resizeTimeout);
|
|
|
|
this.resizeTimeout = setTimeout(function () {
|
|
that.refresh();
|
|
}, this.options.resizePolling);
|
|
},
|
|
|
|
resetPosition: function (time) {
|
|
var x = this.x,
|
|
y = this.y;
|
|
|
|
time = time || 0;
|
|
|
|
if ( !this.hasHorizontalScroll || this.x > 0 ) {
|
|
x = 0;
|
|
} else if ( this.x < this.maxScrollX ) {
|
|
x = this.maxScrollX;
|
|
}
|
|
|
|
if ( !this.hasVerticalScroll || this.y > 0 ) {
|
|
y = 0;
|
|
} else if ( this.y < this.maxScrollY ) {
|
|
y = this.maxScrollY;
|
|
}
|
|
|
|
if ( x == this.x && y == this.y ) {
|
|
return false;
|
|
}
|
|
|
|
this.scrollTo(x, y, time, this.options.bounceEasing);
|
|
|
|
return true;
|
|
},
|
|
|
|
disable: function () {
|
|
this.enabled = false;
|
|
},
|
|
|
|
enable: function () {
|
|
this.enabled = true;
|
|
},
|
|
|
|
refresh: function () {
|
|
var rf = this.wrapper.offsetHeight; // Force reflow
|
|
|
|
this.wrapperWidth = this.wrapper.clientWidth;
|
|
this.wrapperHeight = this.wrapper.clientHeight;
|
|
|
|
/* REPLACE START: refresh */
|
|
|
|
this.scrollerWidth = this.scroller.offsetWidth;
|
|
this.scrollerHeight = this.scroller.offsetHeight;
|
|
|
|
this.maxScrollX = this.wrapperWidth - this.scrollerWidth;
|
|
this.maxScrollY = this.wrapperHeight - this.scrollerHeight;
|
|
|
|
/* REPLACE END: refresh */
|
|
|
|
this.hasHorizontalScroll = this.options.scrollX && this.maxScrollX < 0;
|
|
this.hasVerticalScroll = this.options.scrollY && this.maxScrollY < 0;
|
|
|
|
if ( !this.hasHorizontalScroll ) {
|
|
this.maxScrollX = 0;
|
|
this.scrollerWidth = this.wrapperWidth;
|
|
}
|
|
|
|
if ( !this.hasVerticalScroll ) {
|
|
this.maxScrollY = 0;
|
|
this.scrollerHeight = this.wrapperHeight;
|
|
}
|
|
|
|
this.endTime = 0;
|
|
this.directionX = 0;
|
|
this.directionY = 0;
|
|
|
|
this.wrapperOffset = utils.offset(this.wrapper);
|
|
|
|
this._execEvent('refresh');
|
|
|
|
this.resetPosition();
|
|
|
|
// INSERT POINT: _refresh
|
|
|
|
},
|
|
|
|
on: function (type, fn) {
|
|
if ( !this._events[type] ) {
|
|
this._events[type] = [];
|
|
}
|
|
|
|
this._events[type].push(fn);
|
|
},
|
|
|
|
off: function (type, fn) {
|
|
if ( !this._events[type] ) {
|
|
return;
|
|
}
|
|
|
|
var index = this._events[type].indexOf(fn);
|
|
|
|
if ( index > -1 ) {
|
|
this._events[type].splice(index, 1);
|
|
}
|
|
},
|
|
|
|
_execEvent: function (type) {
|
|
if ( !this._events[type] ) {
|
|
return;
|
|
}
|
|
|
|
var i = 0,
|
|
l = this._events[type].length;
|
|
|
|
if ( !l ) {
|
|
return;
|
|
}
|
|
|
|
for ( ; i < l; i++ ) {
|
|
this._events[type][i].apply(this, [].slice.call(arguments, 1));
|
|
}
|
|
},
|
|
|
|
scrollBy: function (x, y, time, easing) {
|
|
x = this.x + x;
|
|
y = this.y + y;
|
|
time = time || 0;
|
|
|
|
this.scrollTo(x, y, time, easing);
|
|
},
|
|
|
|
scrollTo: function (x, y, time, easing) {
|
|
easing = easing || utils.ease.circular;
|
|
|
|
this.isInTransition = this.options.useTransition && time > 0;
|
|
|
|
if ( !time || (this.options.useTransition && easing.style) ) {
|
|
this._transitionTimingFunction(easing.style);
|
|
this._transitionTime(time);
|
|
this._translate(x, y);
|
|
} else {
|
|
this._animate(x, y, time, easing.fn);
|
|
}
|
|
},
|
|
|
|
scrollToElement: function (el, time, offsetX, offsetY, easing) {
|
|
el = el.nodeType ? el : this.scroller.querySelector(el);
|
|
|
|
if ( !el ) {
|
|
return;
|
|
}
|
|
|
|
var pos = utils.offset(el);
|
|
|
|
pos.left -= this.wrapperOffset.left;
|
|
pos.top -= this.wrapperOffset.top;
|
|
|
|
// if offsetX/Y are true we center the element to the screen
|
|
if ( offsetX === true ) {
|
|
offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
|
|
}
|
|
if ( offsetY === true ) {
|
|
offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2);
|
|
}
|
|
|
|
pos.left -= offsetX || 0;
|
|
pos.top -= offsetY || 0;
|
|
|
|
pos.left = pos.left > 0 ? 0 : pos.left < this.maxScrollX ? this.maxScrollX : pos.left;
|
|
pos.top = pos.top > 0 ? 0 : pos.top < this.maxScrollY ? this.maxScrollY : pos.top;
|
|
|
|
time = time === undefined || time === null || time === 'auto' ? Math.max(Math.abs(this.x-pos.left), Math.abs(this.y-pos.top)) : time;
|
|
|
|
this.scrollTo(pos.left, pos.top, time, easing);
|
|
},
|
|
|
|
_transitionTime: function (time) {
|
|
time = time || 0;
|
|
|
|
this.scrollerStyle[utils.style.transitionDuration] = time + 'ms';
|
|
|
|
if ( !time && utils.isBadAndroid ) {
|
|
this.scrollerStyle[utils.style.transitionDuration] = '0.001s';
|
|
}
|
|
|
|
|
|
if ( this.indicators ) {
|
|
for ( var i = this.indicators.length; i--; ) {
|
|
this.indicators[i].transitionTime(time);
|
|
}
|
|
}
|
|
|
|
|
|
// INSERT POINT: _transitionTime
|
|
|
|
},
|
|
|
|
_transitionTimingFunction: function (easing) {
|
|
this.scrollerStyle[utils.style.transitionTimingFunction] = easing;
|
|
|
|
|
|
if ( this.indicators ) {
|
|
for ( var i = this.indicators.length; i--; ) {
|
|
this.indicators[i].transitionTimingFunction(easing);
|
|
}
|
|
}
|
|
|
|
|
|
// INSERT POINT: _transitionTimingFunction
|
|
|
|
},
|
|
|
|
_translate: function (x, y) {
|
|
if ( this.options.useTransform ) {
|
|
|
|
/* REPLACE START: _translate */
|
|
|
|
this.scrollerStyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.translateZ;
|
|
|
|
/* REPLACE END: _translate */
|
|
|
|
} else {
|
|
x = Math.round(x);
|
|
y = Math.round(y);
|
|
this.scrollerStyle.left = x + 'px';
|
|
this.scrollerStyle.top = y + 'px';
|
|
}
|
|
|
|
this.x = x;
|
|
this.y = y;
|
|
|
|
|
|
if ( this.indicators ) {
|
|
for ( var i = this.indicators.length; i--; ) {
|
|
this.indicators[i].updatePosition();
|
|
}
|
|
}
|
|
|
|
|
|
// INSERT POINT: _translate
|
|
|
|
},
|
|
|
|
_initEvents: function (remove) {
|
|
var eventType = remove ? utils.removeEvent : utils.addEvent,
|
|
target = this.options.bindToWrapper ? this.wrapper : window;
|
|
|
|
eventType(window, 'orientationchange', this);
|
|
eventType(window, 'resize', this);
|
|
|
|
if ( this.options.click ) {
|
|
eventType(this.wrapper, 'click', this, true);
|
|
}
|
|
|
|
if ( !this.options.disableMouse ) {
|
|
eventType(this.wrapper, 'mousedown', this);
|
|
eventType(target, 'mousemove', this);
|
|
eventType(target, 'mousecancel', this);
|
|
eventType(target, 'mouseup', this);
|
|
}
|
|
|
|
if ( utils.hasPointer && !this.options.disablePointer ) {
|
|
eventType(this.wrapper, 'MSPointerDown', this);
|
|
eventType(target, 'MSPointerMove', this);
|
|
eventType(target, 'MSPointerCancel', this);
|
|
eventType(target, 'MSPointerUp', this);
|
|
}
|
|
|
|
if ( utils.hasTouch && !this.options.disableTouch ) {
|
|
eventType(this.wrapper, 'touchstart', this);
|
|
eventType(target, 'touchmove', this);
|
|
eventType(target, 'touchcancel', this);
|
|
eventType(target, 'touchend', this);
|
|
}
|
|
|
|
eventType(this.scroller, 'transitionend', this);
|
|
eventType(this.scroller, 'webkitTransitionEnd', this);
|
|
eventType(this.scroller, 'oTransitionEnd', this);
|
|
eventType(this.scroller, 'MSTransitionEnd', this);
|
|
},
|
|
|
|
getComputedPosition: function () {
|
|
var matrix = window.getComputedStyle(this.scroller, null),
|
|
x, y;
|
|
|
|
if ( this.options.useTransform ) {
|
|
matrix = matrix[utils.style.transform].split(')')[0].split(', ');
|
|
x = +(matrix[12] || matrix[4]);
|
|
y = +(matrix[13] || matrix[5]);
|
|
} else {
|
|
x = +matrix.left.replace(/[^-\d.]/g, '');
|
|
y = +matrix.top.replace(/[^-\d.]/g, '');
|
|
}
|
|
|
|
return { x: x, y: y };
|
|
},
|
|
|
|
_initIndicators: function () {
|
|
var interactive = this.options.interactiveScrollbars,
|
|
customStyle = typeof this.options.scrollbars != 'string',
|
|
indicators = [],
|
|
indicator;
|
|
|
|
var that = this;
|
|
|
|
this.indicators = [];
|
|
|
|
if ( this.options.scrollbars ) {
|
|
// Vertical scrollbar
|
|
if ( this.options.scrollY ) {
|
|
indicator = {
|
|
el: createDefaultScrollbar('v', interactive, this.options.scrollbars),
|
|
interactive: interactive,
|
|
defaultScrollbars: true,
|
|
customStyle: customStyle,
|
|
resize: this.options.resizeScrollbars,
|
|
shrink: this.options.shrinkScrollbars,
|
|
fade: this.options.fadeScrollbars,
|
|
listenX: false
|
|
};
|
|
|
|
this.wrapper.appendChild(indicator.el);
|
|
indicators.push(indicator);
|
|
}
|
|
|
|
// Horizontal scrollbar
|
|
if ( this.options.scrollX ) {
|
|
indicator = {
|
|
el: createDefaultScrollbar('h', interactive, this.options.scrollbars),
|
|
interactive: interactive,
|
|
defaultScrollbars: true,
|
|
customStyle: customStyle,
|
|
resize: this.options.resizeScrollbars,
|
|
shrink: this.options.shrinkScrollbars,
|
|
fade: this.options.fadeScrollbars,
|
|
listenY: false
|
|
};
|
|
|
|
this.wrapper.appendChild(indicator.el);
|
|
indicators.push(indicator);
|
|
}
|
|
}
|
|
|
|
if ( this.options.indicators ) {
|
|
// TODO: check concat compatibility
|
|
indicators = indicators.concat(this.options.indicators);
|
|
}
|
|
|
|
for ( var i = indicators.length; i--; ) {
|
|
this.indicators.push( new Indicator(this, indicators[i]) );
|
|
}
|
|
|
|
// TODO: check if we can use array.map (wide compatibility and performance issues)
|
|
function _indicatorsMap (fn) {
|
|
for ( var i = that.indicators.length; i--; ) {
|
|
fn.call(that.indicators[i]);
|
|
}
|
|
}
|
|
|
|
if ( this.options.fadeScrollbars ) {
|
|
this.on('scrollEnd', function () {
|
|
_indicatorsMap(function () {
|
|
this.fade();
|
|
});
|
|
});
|
|
|
|
this.on('scrollCancel', function () {
|
|
_indicatorsMap(function () {
|
|
this.fade();
|
|
});
|
|
});
|
|
|
|
this.on('scrollStart', function () {
|
|
_indicatorsMap(function () {
|
|
this.fade(1);
|
|
});
|
|
});
|
|
|
|
this.on('beforeScrollStart', function () {
|
|
_indicatorsMap(function () {
|
|
this.fade(1, true);
|
|
});
|
|
});
|
|
}
|
|
|
|
|
|
this.on('refresh', function () {
|
|
_indicatorsMap(function () {
|
|
this.refresh();
|
|
});
|
|
});
|
|
|
|
this.on('destroy', function () {
|
|
_indicatorsMap(function () {
|
|
this.destroy();
|
|
});
|
|
|
|
delete this.indicators;
|
|
});
|
|
},
|
|
|
|
_initWheel: function () {
|
|
utils.addEvent(this.wrapper, 'wheel', this);
|
|
utils.addEvent(this.wrapper, 'mousewheel', this);
|
|
utils.addEvent(this.wrapper, 'DOMMouseScroll', this);
|
|
|
|
this.on('destroy', function () {
|
|
utils.removeEvent(this.wrapper, 'wheel', this);
|
|
utils.removeEvent(this.wrapper, 'mousewheel', this);
|
|
utils.removeEvent(this.wrapper, 'DOMMouseScroll', this);
|
|
});
|
|
},
|
|
|
|
_wheel: function (e) {
|
|
if ( !this.enabled ) {
|
|
return;
|
|
}
|
|
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
|
|
var wheelDeltaX, wheelDeltaY,
|
|
newX, newY,
|
|
that = this;
|
|
|
|
if ( this.wheelTimeout === undefined ) {
|
|
that._execEvent('scrollStart');
|
|
}
|
|
|
|
// Execute the scrollEnd event after 400ms the wheel stopped scrolling
|
|
clearTimeout(this.wheelTimeout);
|
|
this.wheelTimeout = setTimeout(function () {
|
|
that._execEvent('scrollEnd');
|
|
that.wheelTimeout = undefined;
|
|
}, 400);
|
|
|
|
if ( 'deltaX' in e ) {
|
|
wheelDeltaX = -e.deltaX;
|
|
wheelDeltaY = -e.deltaY;
|
|
} else if ( 'wheelDeltaX' in e ) {
|
|
wheelDeltaX = e.wheelDeltaX / 120 * this.options.mouseWheelSpeed;
|
|
wheelDeltaY = e.wheelDeltaY / 120 * this.options.mouseWheelSpeed;
|
|
} else if ( 'wheelDelta' in e ) {
|
|
wheelDeltaX = wheelDeltaY = e.wheelDelta / 120 * this.options.mouseWheelSpeed;
|
|
} else if ( 'detail' in e ) {
|
|
wheelDeltaX = wheelDeltaY = -e.detail / 3 * this.options.mouseWheelSpeed;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
wheelDeltaX *= this.options.invertWheelDirection;
|
|
wheelDeltaY *= this.options.invertWheelDirection;
|
|
|
|
if ( !this.hasVerticalScroll ) {
|
|
wheelDeltaX = wheelDeltaY;
|
|
wheelDeltaY = 0;
|
|
}
|
|
|
|
if ( this.options.snap ) {
|
|
newX = this.currentPage.pageX;
|
|
newY = this.currentPage.pageY;
|
|
|
|
if ( wheelDeltaX > 0 ) {
|
|
newX--;
|
|
} else if ( wheelDeltaX < 0 ) {
|
|
newX++;
|
|
}
|
|
|
|
if ( wheelDeltaY > 0 ) {
|
|
newY--;
|
|
} else if ( wheelDeltaY < 0 ) {
|
|
newY++;
|
|
}
|
|
|
|
this.goToPage(newX, newY);
|
|
|
|
return;
|
|
}
|
|
|
|
newX = this.x + Math.round(this.hasHorizontalScroll ? wheelDeltaX : 0);
|
|
newY = this.y + Math.round(this.hasVerticalScroll ? wheelDeltaY : 0);
|
|
|
|
if ( newX > 0 ) {
|
|
newX = 0;
|
|
} else if ( newX < this.maxScrollX ) {
|
|
newX = this.maxScrollX;
|
|
}
|
|
|
|
if ( newY > 0 ) {
|
|
newY = 0;
|
|
} else if ( newY < this.maxScrollY ) {
|
|
newY = this.maxScrollY;
|
|
}
|
|
|
|
this.scrollTo(newX, newY, 0);
|
|
|
|
// INSERT POINT: _wheel
|
|
},
|
|
|
|
_initSnap: function () {
|
|
this.currentPage = {};
|
|
|
|
if ( typeof this.options.snap == 'string' ) {
|
|
this.options.snap = this.scroller.querySelectorAll(this.options.snap);
|
|
}
|
|
|
|
this.on('refresh', function () {
|
|
var i = 0, l,
|
|
m = 0, n,
|
|
cx, cy,
|
|
x = 0, y,
|
|
stepX = this.options.snapStepX || this.wrapperWidth,
|
|
stepY = this.options.snapStepY || this.wrapperHeight,
|
|
el;
|
|
|
|
this.pages = [];
|
|
|
|
if ( !this.wrapperWidth || !this.wrapperHeight || !this.scrollerWidth || !this.scrollerHeight ) {
|
|
return;
|
|
}
|
|
|
|
if ( this.options.snap === true ) {
|
|
cx = Math.round( stepX / 2 );
|
|
cy = Math.round( stepY / 2 );
|
|
|
|
while ( x > -this.scrollerWidth ) {
|
|
this.pages[i] = [];
|
|
l = 0;
|
|
y = 0;
|
|
|
|
while ( y > -this.scrollerHeight ) {
|
|
this.pages[i][l] = {
|
|
x: Math.max(x, this.maxScrollX),
|
|
y: Math.max(y, this.maxScrollY),
|
|
width: stepX,
|
|
height: stepY,
|
|
cx: x - cx,
|
|
cy: y - cy
|
|
};
|
|
|
|
y -= stepY;
|
|
l++;
|
|
}
|
|
|
|
x -= stepX;
|
|
i++;
|
|
}
|
|
} else {
|
|
el = this.options.snap;
|
|
l = el.length;
|
|
n = -1;
|
|
|
|
for ( ; i < l; i++ ) {
|
|
if ( i === 0 || el[i].offsetLeft <= el[i-1].offsetLeft ) {
|
|
m = 0;
|
|
n++;
|
|
}
|
|
|
|
if ( !this.pages[m] ) {
|
|
this.pages[m] = [];
|
|
}
|
|
|
|
x = Math.max(-el[i].offsetLeft, this.maxScrollX);
|
|
y = Math.max(-el[i].offsetTop, this.maxScrollY);
|
|
cx = x - Math.round(el[i].offsetWidth / 2);
|
|
cy = y - Math.round(el[i].offsetHeight / 2);
|
|
|
|
this.pages[m][n] = {
|
|
x: x,
|
|
y: y,
|
|
width: el[i].offsetWidth,
|
|
height: el[i].offsetHeight,
|
|
cx: cx,
|
|
cy: cy
|
|
};
|
|
|
|
if ( x > this.maxScrollX ) {
|
|
m++;
|
|
}
|
|
}
|
|
}
|
|
|
|
this.goToPage(this.currentPage.pageX || 0, this.currentPage.pageY || 0, 0);
|
|
|
|
// Update snap threshold if needed
|
|
if ( this.options.snapThreshold % 1 === 0 ) {
|
|
this.snapThresholdX = this.options.snapThreshold;
|
|
this.snapThresholdY = this.options.snapThreshold;
|
|
} else {
|
|
this.snapThresholdX = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].width * this.options.snapThreshold);
|
|
this.snapThresholdY = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].height * this.options.snapThreshold);
|
|
}
|
|
});
|
|
|
|
this.on('flick', function () {
|
|
var time = this.options.snapSpeed || Math.max(
|
|
Math.max(
|
|
Math.min(Math.abs(this.x - this.startX), 1000),
|
|
Math.min(Math.abs(this.y - this.startY), 1000)
|
|
), 300);
|
|
|
|
this.goToPage(
|
|
this.currentPage.pageX + this.directionX,
|
|
this.currentPage.pageY + this.directionY,
|
|
time
|
|
);
|
|
});
|
|
},
|
|
|
|
_nearestSnap: function (x, y) {
|
|
if ( !this.pages.length ) {
|
|
return { x: 0, y: 0, pageX: 0, pageY: 0 };
|
|
}
|
|
|
|
var i = 0,
|
|
l = this.pages.length,
|
|
m = 0;
|
|
|
|
// Check if we exceeded the snap threshold
|
|
if ( Math.abs(x - this.absStartX) < this.snapThresholdX &&
|
|
Math.abs(y - this.absStartY) < this.snapThresholdY ) {
|
|
return this.currentPage;
|
|
}
|
|
|
|
if ( x > 0 ) {
|
|
x = 0;
|
|
} else if ( x < this.maxScrollX ) {
|
|
x = this.maxScrollX;
|
|
}
|
|
|
|
if ( y > 0 ) {
|
|
y = 0;
|
|
} else if ( y < this.maxScrollY ) {
|
|
y = this.maxScrollY;
|
|
}
|
|
|
|
for ( ; i < l; i++ ) {
|
|
if ( x >= this.pages[i][0].cx ) {
|
|
x = this.pages[i][0].x;
|
|
break;
|
|
}
|
|
}
|
|
|
|
l = this.pages[i].length;
|
|
|
|
for ( ; m < l; m++ ) {
|
|
if ( y >= this.pages[0][m].cy ) {
|
|
y = this.pages[0][m].y;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( i == this.currentPage.pageX ) {
|
|
i += this.directionX;
|
|
|
|
if ( i < 0 ) {
|
|
i = 0;
|
|
} else if ( i >= this.pages.length ) {
|
|
i = this.pages.length - 1;
|
|
}
|
|
|
|
x = this.pages[i][0].x;
|
|
}
|
|
|
|
if ( m == this.currentPage.pageY ) {
|
|
m += this.directionY;
|
|
|
|
if ( m < 0 ) {
|
|
m = 0;
|
|
} else if ( m >= this.pages[0].length ) {
|
|
m = this.pages[0].length - 1;
|
|
}
|
|
|
|
y = this.pages[0][m].y;
|
|
}
|
|
|
|
return {
|
|
x: x,
|
|
y: y,
|
|
pageX: i,
|
|
pageY: m
|
|
};
|
|
},
|
|
|
|
goToPage: function (x, y, time, easing) {
|
|
easing = easing || this.options.bounceEasing;
|
|
|
|
if ( x >= this.pages.length ) {
|
|
x = this.pages.length - 1;
|
|
} else if ( x < 0 ) {
|
|
x = 0;
|
|
}
|
|
|
|
if ( y >= this.pages[x].length ) {
|
|
y = this.pages[x].length - 1;
|
|
} else if ( y < 0 ) {
|
|
y = 0;
|
|
}
|
|
|
|
var posX = this.pages[x][y].x,
|
|
posY = this.pages[x][y].y;
|
|
|
|
time = time === undefined ? this.options.snapSpeed || Math.max(
|
|
Math.max(
|
|
Math.min(Math.abs(posX - this.x), 1000),
|
|
Math.min(Math.abs(posY - this.y), 1000)
|
|
), 300) : time;
|
|
|
|
this.currentPage = {
|
|
x: posX,
|
|
y: posY,
|
|
pageX: x,
|
|
pageY: y
|
|
};
|
|
|
|
this.scrollTo(posX, posY, time, easing);
|
|
},
|
|
|
|
next: function (time, easing) {
|
|
var x = this.currentPage.pageX,
|
|
y = this.currentPage.pageY;
|
|
|
|
x++;
|
|
|
|
if ( x >= this.pages.length && this.hasVerticalScroll ) {
|
|
x = 0;
|
|
y++;
|
|
}
|
|
|
|
this.goToPage(x, y, time, easing);
|
|
},
|
|
|
|
prev: function (time, easing) {
|
|
var x = this.currentPage.pageX,
|
|
y = this.currentPage.pageY;
|
|
|
|
x--;
|
|
|
|
if ( x < 0 && this.hasVerticalScroll ) {
|
|
x = 0;
|
|
y--;
|
|
}
|
|
|
|
this.goToPage(x, y, time, easing);
|
|
},
|
|
|
|
_initKeys: function (e) {
|
|
// default key bindings
|
|
var keys = {
|
|
pageUp: 33,
|
|
pageDown: 34,
|
|
end: 35,
|
|
home: 36,
|
|
left: 37,
|
|
up: 38,
|
|
right: 39,
|
|
down: 40
|
|
};
|
|
var i;
|
|
|
|
// if you give me characters I give you keycode
|
|
if ( typeof this.options.keyBindings == 'object' ) {
|
|
for ( i in this.options.keyBindings ) {
|
|
if ( typeof this.options.keyBindings[i] == 'string' ) {
|
|
this.options.keyBindings[i] = this.options.keyBindings[i].toUpperCase().charCodeAt(0);
|
|
}
|
|
}
|
|
} else {
|
|
this.options.keyBindings = {};
|
|
}
|
|
|
|
for ( i in keys ) {
|
|
this.options.keyBindings[i] = this.options.keyBindings[i] || keys[i];
|
|
}
|
|
|
|
utils.addEvent(window, 'keydown', this);
|
|
|
|
this.on('destroy', function () {
|
|
utils.removeEvent(window, 'keydown', this);
|
|
});
|
|
},
|
|
|
|
_key: function (e) {
|
|
if ( !this.enabled ) {
|
|
return;
|
|
}
|
|
|
|
var snap = this.options.snap, // we are using this alot, better to cache it
|
|
newX = snap ? this.currentPage.pageX : this.x,
|
|
newY = snap ? this.currentPage.pageY : this.y,
|
|
now = utils.getTime(),
|
|
prevTime = this.keyTime || 0,
|
|
acceleration = 0.250,
|
|
pos;
|
|
|
|
if ( this.options.useTransition && this.isInTransition ) {
|
|
pos = this.getComputedPosition();
|
|
|
|
this._translate(Math.round(pos.x), Math.round(pos.y));
|
|
this.isInTransition = false;
|
|
}
|
|
|
|
this.keyAcceleration = now - prevTime < 200 ? Math.min(this.keyAcceleration + acceleration, 50) : 0;
|
|
|
|
switch ( e.keyCode ) {
|
|
case this.options.keyBindings.pageUp:
|
|
if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
|
|
newX += snap ? 1 : this.wrapperWidth;
|
|
} else {
|
|
newY += snap ? 1 : this.wrapperHeight;
|
|
}
|
|
break;
|
|
case this.options.keyBindings.pageDown:
|
|
if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
|
|
newX -= snap ? 1 : this.wrapperWidth;
|
|
} else {
|
|
newY -= snap ? 1 : this.wrapperHeight;
|
|
}
|
|
break;
|
|
case this.options.keyBindings.end:
|
|
newX = snap ? this.pages.length-1 : this.maxScrollX;
|
|
newY = snap ? this.pages[0].length-1 : this.maxScrollY;
|
|
break;
|
|
case this.options.keyBindings.home:
|
|
newX = 0;
|
|
newY = 0;
|
|
break;
|
|
case this.options.keyBindings.left:
|
|
newX += snap ? -1 : 5 + this.keyAcceleration>>0;
|
|
break;
|
|
case this.options.keyBindings.up:
|
|
newY += snap ? 1 : 5 + this.keyAcceleration>>0;
|
|
break;
|
|
case this.options.keyBindings.right:
|
|
newX -= snap ? -1 : 5 + this.keyAcceleration>>0;
|
|
break;
|
|
case this.options.keyBindings.down:
|
|
newY -= snap ? 1 : 5 + this.keyAcceleration>>0;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
if ( snap ) {
|
|
this.goToPage(newX, newY);
|
|
return;
|
|
}
|
|
|
|
if ( newX > 0 ) {
|
|
newX = 0;
|
|
this.keyAcceleration = 0;
|
|
} else if ( newX < this.maxScrollX ) {
|
|
newX = this.maxScrollX;
|
|
this.keyAcceleration = 0;
|
|
}
|
|
|
|
if ( newY > 0 ) {
|
|
newY = 0;
|
|
this.keyAcceleration = 0;
|
|
} else if ( newY < this.maxScrollY ) {
|
|
newY = this.maxScrollY;
|
|
this.keyAcceleration = 0;
|
|
}
|
|
|
|
this.scrollTo(newX, newY, 0);
|
|
|
|
this.keyTime = now;
|
|
},
|
|
|
|
_animate: function (destX, destY, duration, easingFn) {
|
|
var that = this,
|
|
startX = this.x,
|
|
startY = this.y,
|
|
startTime = utils.getTime(),
|
|
destTime = startTime + duration;
|
|
|
|
function step () {
|
|
var now = utils.getTime(),
|
|
newX, newY,
|
|
easing;
|
|
|
|
if ( now >= destTime ) {
|
|
that.isAnimating = false;
|
|
that._translate(destX, destY);
|
|
|
|
if ( !that.resetPosition(that.options.bounceTime) ) {
|
|
that._execEvent('scrollEnd');
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
now = ( now - startTime ) / duration;
|
|
easing = easingFn(now);
|
|
newX = ( destX - startX ) * easing + startX;
|
|
newY = ( destY - startY ) * easing + startY;
|
|
that._translate(newX, newY);
|
|
|
|
if ( that.isAnimating ) {
|
|
rAF(step);
|
|
}
|
|
}
|
|
|
|
this.isAnimating = true;
|
|
step();
|
|
},
|
|
handleEvent: function (e) {
|
|
switch ( e.type ) {
|
|
case 'touchstart':
|
|
case 'MSPointerDown':
|
|
case 'mousedown':
|
|
this._start(e);
|
|
break;
|
|
case 'touchmove':
|
|
case 'MSPointerMove':
|
|
case 'mousemove':
|
|
this._move(e);
|
|
break;
|
|
case 'touchend':
|
|
case 'MSPointerUp':
|
|
case 'mouseup':
|
|
case 'touchcancel':
|
|
case 'MSPointerCancel':
|
|
case 'mousecancel':
|
|
this._end(e);
|
|
break;
|
|
case 'orientationchange':
|
|
case 'resize':
|
|
this._resize();
|
|
break;
|
|
case 'transitionend':
|
|
case 'webkitTransitionEnd':
|
|
case 'oTransitionEnd':
|
|
case 'MSTransitionEnd':
|
|
this._transitionEnd(e);
|
|
break;
|
|
case 'wheel':
|
|
case 'DOMMouseScroll':
|
|
case 'mousewheel':
|
|
this._wheel(e);
|
|
break;
|
|
case 'keydown':
|
|
this._key(e);
|
|
break;
|
|
case 'click':
|
|
if ( !e._constructed ) {
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
};
|
|
function createDefaultScrollbar (direction, interactive, type) {
|
|
var scrollbar = document.createElement('div'),
|
|
indicator = document.createElement('div');
|
|
|
|
if ( type === true ) {
|
|
scrollbar.style.cssText = 'position:absolute;z-index:9999';
|
|
indicator.style.cssText = '-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;position:absolute;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);border-radius:3px';
|
|
}
|
|
|
|
indicator.className = 'iScrollIndicator';
|
|
|
|
if ( direction == 'h' ) {
|
|
if ( type === true ) {
|
|
scrollbar.style.cssText += ';height:7px;left:2px;right:2px;bottom:0';
|
|
indicator.style.height = '100%';
|
|
}
|
|
scrollbar.className = 'iScrollHorizontalScrollbar';
|
|
} else {
|
|
if ( type === true ) {
|
|
scrollbar.style.cssText += ';width:7px;bottom:2px;top:2px;right:1px';
|
|
indicator.style.width = '100%';
|
|
}
|
|
scrollbar.className = 'iScrollVerticalScrollbar';
|
|
}
|
|
|
|
scrollbar.style.cssText += ';overflow:hidden';
|
|
|
|
if ( !interactive ) {
|
|
scrollbar.style.pointerEvents = 'none';
|
|
}
|
|
|
|
scrollbar.appendChild(indicator);
|
|
|
|
return scrollbar;
|
|
}
|
|
|
|
function Indicator (scroller, options) {
|
|
this.wrapper = typeof options.el == 'string' ? document.querySelector(options.el) : options.el;
|
|
this.wrapperStyle = this.wrapper.style;
|
|
this.indicator = this.wrapper.children[0];
|
|
this.indicatorStyle = this.indicator.style;
|
|
this.scroller = scroller;
|
|
|
|
this.options = {
|
|
listenX: true,
|
|
listenY: true,
|
|
interactive: false,
|
|
resize: true,
|
|
defaultScrollbars: false,
|
|
shrink: false,
|
|
fade: false,
|
|
speedRatioX: 0,
|
|
speedRatioY: 0
|
|
};
|
|
|
|
for ( var i in options ) {
|
|
this.options[i] = options[i];
|
|
}
|
|
|
|
this.sizeRatioX = 1;
|
|
this.sizeRatioY = 1;
|
|
this.maxPosX = 0;
|
|
this.maxPosY = 0;
|
|
|
|
if ( this.options.interactive ) {
|
|
if ( !this.options.disableTouch ) {
|
|
utils.addEvent(this.indicator, 'touchstart', this);
|
|
utils.addEvent(window, 'touchend', this);
|
|
}
|
|
if ( !this.options.disablePointer ) {
|
|
utils.addEvent(this.indicator, 'MSPointerDown', this);
|
|
utils.addEvent(window, 'MSPointerUp', this);
|
|
}
|
|
if ( !this.options.disableMouse ) {
|
|
utils.addEvent(this.indicator, 'mousedown', this);
|
|
utils.addEvent(window, 'mouseup', this);
|
|
}
|
|
}
|
|
|
|
if ( this.options.fade ) {
|
|
this.wrapperStyle[utils.style.transform] = this.scroller.translateZ;
|
|
this.wrapperStyle[utils.style.transitionDuration] = utils.isBadAndroid ? '0.001s' : '0ms';
|
|
this.wrapperStyle.opacity = '0';
|
|
}
|
|
}
|
|
|
|
Indicator.prototype = {
|
|
handleEvent: function (e) {
|
|
switch ( e.type ) {
|
|
case 'touchstart':
|
|
case 'MSPointerDown':
|
|
case 'mousedown':
|
|
this._start(e);
|
|
break;
|
|
case 'touchmove':
|
|
case 'MSPointerMove':
|
|
case 'mousemove':
|
|
this._move(e);
|
|
break;
|
|
case 'touchend':
|
|
case 'MSPointerUp':
|
|
case 'mouseup':
|
|
case 'touchcancel':
|
|
case 'MSPointerCancel':
|
|
case 'mousecancel':
|
|
this._end(e);
|
|
break;
|
|
}
|
|
},
|
|
|
|
destroy: function () {
|
|
if ( this.options.interactive ) {
|
|
utils.removeEvent(this.indicator, 'touchstart', this);
|
|
utils.removeEvent(this.indicator, 'MSPointerDown', this);
|
|
utils.removeEvent(this.indicator, 'mousedown', this);
|
|
|
|
utils.removeEvent(window, 'touchmove', this);
|
|
utils.removeEvent(window, 'MSPointerMove', this);
|
|
utils.removeEvent(window, 'mousemove', this);
|
|
|
|
utils.removeEvent(window, 'touchend', this);
|
|
utils.removeEvent(window, 'MSPointerUp', this);
|
|
utils.removeEvent(window, 'mouseup', this);
|
|
}
|
|
|
|
if ( this.options.defaultScrollbars ) {
|
|
this.wrapper.parentNode.removeChild(this.wrapper);
|
|
}
|
|
},
|
|
|
|
_start: function (e) {
|
|
var point = e.touches ? e.touches[0] : e;
|
|
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
|
|
this.transitionTime();
|
|
|
|
this.initiated = true;
|
|
this.moved = false;
|
|
this.lastPointX = point.pageX;
|
|
this.lastPointY = point.pageY;
|
|
|
|
this.startTime = utils.getTime();
|
|
|
|
if ( !this.options.disableTouch ) {
|
|
utils.addEvent(window, 'touchmove', this);
|
|
}
|
|
if ( !this.options.disablePointer ) {
|
|
utils.addEvent(window, 'MSPointerMove', this);
|
|
}
|
|
if ( !this.options.disableMouse ) {
|
|
utils.addEvent(window, 'mousemove', this);
|
|
}
|
|
|
|
this.scroller._execEvent('beforeScrollStart');
|
|
},
|
|
|
|
_move: function (e) {
|
|
var point = e.touches ? e.touches[0] : e,
|
|
deltaX, deltaY,
|
|
newX, newY,
|
|
timestamp = utils.getTime();
|
|
|
|
if ( !this.moved ) {
|
|
this.scroller._execEvent('scrollStart');
|
|
}
|
|
|
|
this.moved = true;
|
|
|
|
deltaX = point.pageX - this.lastPointX;
|
|
this.lastPointX = point.pageX;
|
|
|
|
deltaY = point.pageY - this.lastPointY;
|
|
this.lastPointY = point.pageY;
|
|
|
|
newX = this.x + deltaX;
|
|
newY = this.y + deltaY;
|
|
|
|
this._pos(newX, newY);
|
|
|
|
// INSERT POINT: indicator._move
|
|
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
},
|
|
|
|
_end: function (e) {
|
|
if ( !this.initiated ) {
|
|
return;
|
|
}
|
|
|
|
this.initiated = false;
|
|
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
|
|
utils.removeEvent(window, 'touchmove', this);
|
|
utils.removeEvent(window, 'MSPointerMove', this);
|
|
utils.removeEvent(window, 'mousemove', this);
|
|
|
|
if ( this.scroller.options.snap ) {
|
|
var snap = this.scroller._nearestSnap(this.scroller.x, this.scroller.y);
|
|
|
|
var time = this.options.snapSpeed || Math.max(
|
|
Math.max(
|
|
Math.min(Math.abs(this.scroller.x - snap.x), 1000),
|
|
Math.min(Math.abs(this.scroller.y - snap.y), 1000)
|
|
), 300);
|
|
|
|
if ( this.scroller.x != snap.x || this.scroller.y != snap.y ) {
|
|
this.scroller.directionX = 0;
|
|
this.scroller.directionY = 0;
|
|
this.scroller.currentPage = snap;
|
|
this.scroller.scrollTo(snap.x, snap.y, time, this.scroller.options.bounceEasing);
|
|
}
|
|
}
|
|
|
|
if ( this.moved ) {
|
|
this.scroller._execEvent('scrollEnd');
|
|
}
|
|
},
|
|
|
|
transitionTime: function (time) {
|
|
time = time || 0;
|
|
this.indicatorStyle[utils.style.transitionDuration] = time + 'ms';
|
|
|
|
if ( !time && utils.isBadAndroid ) {
|
|
this.indicatorStyle[utils.style.transitionDuration] = '0.001s';
|
|
}
|
|
},
|
|
|
|
transitionTimingFunction: function (easing) {
|
|
this.indicatorStyle[utils.style.transitionTimingFunction] = easing;
|
|
},
|
|
|
|
refresh: function () {
|
|
this.transitionTime();
|
|
|
|
if ( this.options.listenX && !this.options.listenY ) {
|
|
this.indicatorStyle.display = this.scroller.hasHorizontalScroll ? 'block' : 'none';
|
|
} else if ( this.options.listenY && !this.options.listenX ) {
|
|
this.indicatorStyle.display = this.scroller.hasVerticalScroll ? 'block' : 'none';
|
|
} else {
|
|
this.indicatorStyle.display = this.scroller.hasHorizontalScroll || this.scroller.hasVerticalScroll ? 'block' : 'none';
|
|
}
|
|
|
|
if ( this.scroller.hasHorizontalScroll && this.scroller.hasVerticalScroll ) {
|
|
utils.addClass(this.wrapper, 'iScrollBothScrollbars');
|
|
utils.removeClass(this.wrapper, 'iScrollLoneScrollbar');
|
|
|
|
if ( this.options.defaultScrollbars && this.options.customStyle ) {
|
|
if ( this.options.listenX ) {
|
|
this.wrapper.style.right = '8px';
|
|
} else {
|
|
this.wrapper.style.bottom = '8px';
|
|
}
|
|
}
|
|
} else {
|
|
utils.removeClass(this.wrapper, 'iScrollBothScrollbars');
|
|
utils.addClass(this.wrapper, 'iScrollLoneScrollbar');
|
|
|
|
if ( this.options.defaultScrollbars && this.options.customStyle ) {
|
|
if ( this.options.listenX ) {
|
|
this.wrapper.style.right = '2px';
|
|
} else {
|
|
this.wrapper.style.bottom = '2px';
|
|
}
|
|
}
|
|
}
|
|
|
|
var r = this.wrapper.offsetHeight; // force refresh
|
|
|
|
if ( this.options.listenX ) {
|
|
this.wrapperWidth = this.wrapper.clientWidth;
|
|
if ( this.options.resize ) {
|
|
this.indicatorWidth = Math.max(Math.round(this.wrapperWidth * this.wrapperWidth / (this.scroller.scrollerWidth || this.wrapperWidth || 1)), 8);
|
|
this.indicatorStyle.width = this.indicatorWidth + 'px';
|
|
} else {
|
|
this.indicatorWidth = this.indicator.clientWidth;
|
|
}
|
|
|
|
this.maxPosX = this.wrapperWidth - this.indicatorWidth;
|
|
|
|
if ( this.options.shrink == 'clip' ) {
|
|
this.minBoundaryX = -this.indicatorWidth + 8;
|
|
this.maxBoundaryX = this.wrapperWidth - 8;
|
|
} else {
|
|
this.minBoundaryX = 0;
|
|
this.maxBoundaryX = this.maxPosX;
|
|
}
|
|
|
|
this.sizeRatioX = this.options.speedRatioX || (this.scroller.maxScrollX && (this.maxPosX / this.scroller.maxScrollX));
|
|
}
|
|
|
|
if ( this.options.listenY ) {
|
|
this.wrapperHeight = this.wrapper.clientHeight;
|
|
if ( this.options.resize ) {
|
|
this.indicatorHeight = Math.max(Math.round(this.wrapperHeight * this.wrapperHeight / (this.scroller.scrollerHeight || this.wrapperHeight || 1)), 8);
|
|
this.indicatorStyle.height = this.indicatorHeight + 'px';
|
|
} else {
|
|
this.indicatorHeight = this.indicator.clientHeight;
|
|
}
|
|
|
|
this.maxPosY = this.wrapperHeight - this.indicatorHeight;
|
|
|
|
if ( this.options.shrink == 'clip' ) {
|
|
this.minBoundaryY = -this.indicatorHeight + 8;
|
|
this.maxBoundaryY = this.wrapperHeight - 8;
|
|
} else {
|
|
this.minBoundaryY = 0;
|
|
this.maxBoundaryY = this.maxPosY;
|
|
}
|
|
|
|
this.maxPosY = this.wrapperHeight - this.indicatorHeight;
|
|
this.sizeRatioY = this.options.speedRatioY || (this.scroller.maxScrollY && (this.maxPosY / this.scroller.maxScrollY));
|
|
}
|
|
|
|
this.updatePosition();
|
|
},
|
|
|
|
updatePosition: function () {
|
|
var x = this.options.listenX && Math.round(this.sizeRatioX * this.scroller.x) || 0,
|
|
y = this.options.listenY && Math.round(this.sizeRatioY * this.scroller.y) || 0;
|
|
|
|
if ( !this.options.ignoreBoundaries ) {
|
|
if ( x < this.minBoundaryX ) {
|
|
if ( this.options.shrink == 'scale' ) {
|
|
this.width = Math.max(this.indicatorWidth + x, 8);
|
|
this.indicatorStyle.width = this.width + 'px';
|
|
}
|
|
x = this.minBoundaryX;
|
|
} else if ( x > this.maxBoundaryX ) {
|
|
if ( this.options.shrink == 'scale' ) {
|
|
this.width = Math.max(this.indicatorWidth - (x - this.maxPosX), 8);
|
|
this.indicatorStyle.width = this.width + 'px';
|
|
x = this.maxPosX + this.indicatorWidth - this.width;
|
|
} else {
|
|
x = this.maxBoundaryX;
|
|
}
|
|
} else if ( this.options.shrink == 'scale' && this.width != this.indicatorWidth ) {
|
|
this.width = this.indicatorWidth;
|
|
this.indicatorStyle.width = this.width + 'px';
|
|
}
|
|
|
|
if ( y < this.minBoundaryY ) {
|
|
if ( this.options.shrink == 'scale' ) {
|
|
this.height = Math.max(this.indicatorHeight + y * 3, 8);
|
|
this.indicatorStyle.height = this.height + 'px';
|
|
}
|
|
y = this.minBoundaryY;
|
|
} else if ( y > this.maxBoundaryY ) {
|
|
if ( this.options.shrink == 'scale' ) {
|
|
this.height = Math.max(this.indicatorHeight - (y - this.maxPosY) * 3, 8);
|
|
this.indicatorStyle.height = this.height + 'px';
|
|
y = this.maxPosY + this.indicatorHeight - this.height;
|
|
} else {
|
|
y = this.maxBoundaryY;
|
|
}
|
|
} else if ( this.options.shrink == 'scale' && this.height != this.indicatorHeight ) {
|
|
this.height = this.indicatorHeight;
|
|
this.indicatorStyle.height = this.height + 'px';
|
|
}
|
|
}
|
|
|
|
this.x = x;
|
|
this.y = y;
|
|
|
|
if ( this.scroller.options.useTransform ) {
|
|
this.indicatorStyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.scroller.translateZ;
|
|
} else {
|
|
this.indicatorStyle.left = x + 'px';
|
|
this.indicatorStyle.top = y + 'px';
|
|
}
|
|
},
|
|
|
|
_pos: function (x, y) {
|
|
if ( x < 0 ) {
|
|
x = 0;
|
|
} else if ( x > this.maxPosX ) {
|
|
x = this.maxPosX;
|
|
}
|
|
|
|
if ( y < 0 ) {
|
|
y = 0;
|
|
} else if ( y > this.maxPosY ) {
|
|
y = this.maxPosY;
|
|
}
|
|
|
|
x = this.options.listenX ? Math.round(x / this.sizeRatioX) : this.scroller.x;
|
|
y = this.options.listenY ? Math.round(y / this.sizeRatioY) : this.scroller.y;
|
|
|
|
this.scroller.scrollTo(x, y);
|
|
},
|
|
|
|
fade: function (val, hold) {
|
|
if ( hold && !this.visible ) {
|
|
return;
|
|
}
|
|
|
|
clearTimeout(this.fadeTimeout);
|
|
this.fadeTimeout = null;
|
|
|
|
var time = val ? 250 : 500,
|
|
delay = val ? 0 : 300;
|
|
|
|
val = val ? '1' : '0';
|
|
|
|
this.wrapperStyle[utils.style.transitionDuration] = time + 'ms';
|
|
|
|
this.fadeTimeout = setTimeout((function (val) {
|
|
this.wrapperStyle.opacity = val;
|
|
this.visible = +val;
|
|
}).bind(this, val), delay);
|
|
}
|
|
};
|
|
|
|
IScroll.utils = utils;
|
|
|
|
if ( typeof module != 'undefined' && module.exports ) {
|
|
module.exports = IScroll;
|
|
} else {
|
|
window.IScroll = IScroll;
|
|
}
|
|
|
|
})(window, document, Math); |