mirror of
https://github.com/flynx/PortableMag.git
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980 lines
27 KiB
JavaScript
Executable File
980 lines
27 KiB
JavaScript
Executable File
/*!
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* iScroll v4.2.5 ~ Copyright (c) 2012 Matteo Spinelli, http://cubiq.org
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* Released under MIT license, http://cubiq.org/license
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*
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* MOD Log:
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* - disabled user-zooming...
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* - removed scrollbars...
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*/
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(function(window, doc){
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var m = Math,
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dummyStyle = doc.createElement('div').style,
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vendor = (function () {
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var vendors = 't,webkitT,MozT,msT,OT'.split(','),
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t,
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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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t = vendors[i] + 'ransform';
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if ( t in dummyStyle ) {
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return vendors[i].substr(0, vendors[i].length - 1);
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}
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}
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return false;
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})(),
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cssVendor = vendor ? '-' + vendor.toLowerCase() + '-' : '',
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// Style properties
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transform = prefixStyle('transform'),
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transitionProperty = prefixStyle('transitionProperty'),
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transitionDuration = prefixStyle('transitionDuration'),
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transformOrigin = prefixStyle('transformOrigin'),
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transitionTimingFunction = prefixStyle('transitionTimingFunction'),
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transitionDelay = prefixStyle('transitionDelay'),
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// Browser capabilities
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isAndroid = (/android/gi).test(navigator.appVersion),
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isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),
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isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),
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has3d = prefixStyle('perspective') in dummyStyle,
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hasTouch = 'ontouchstart' in window && !isTouchPad,
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hasTransform = vendor !== false,
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hasTransitionEnd = prefixStyle('transition') in dummyStyle,
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RESIZE_EV = 'onorientationchange' in window ? 'orientationchange' : 'resize',
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START_EV = hasTouch ? 'touchstart' : 'mousedown',
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MOVE_EV = hasTouch ? 'touchmove' : 'mousemove',
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END_EV = hasTouch ? 'touchend' : 'mouseup',
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CANCEL_EV = hasTouch ? 'touchcancel' : 'mouseup',
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TRNEND_EV = (function () {
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if ( vendor === false ) return false;
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var transitionEnd = {
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'' : 'transitionend',
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'webkit' : 'webkitTransitionEnd',
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'Moz' : 'transitionend',
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'O' : 'otransitionend',
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'ms' : 'MSTransitionEnd'
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};
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return transitionEnd[vendor];
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})(),
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nextFrame = (function() {
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return 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) { return setTimeout(callback, 1); };
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})(),
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cancelFrame = (function () {
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return window.cancelRequestAnimationFrame ||
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window.webkitCancelAnimationFrame ||
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window.webkitCancelRequestAnimationFrame ||
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window.mozCancelRequestAnimationFrame ||
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window.oCancelRequestAnimationFrame ||
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window.msCancelRequestAnimationFrame ||
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clearTimeout;
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})(),
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// Helpers
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translateZ = has3d ? ' translateZ(0)' : '',
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// Constructor
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iScroll = function (el, options) {
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var that = this,
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i;
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that.wrapper = typeof el == 'object' ? el : doc.getElementById(el);
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that.wrapper.style.overflow = 'hidden';
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that.scroller = that.wrapper.children[0];
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// Default options
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that.options = {
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hScroll: true,
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vScroll: true,
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x: 0,
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y: 0,
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bounce: true,
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bounceLock: false,
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momentum: true,
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lockDirection: true,
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useTransform: true,
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useTransition: false,
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topOffset: 0,
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checkDOMChanges: false, // Experimental
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handleClick: true,
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// Zoom
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zoom: false,
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zoomMin: 1,
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zoomMax: 4,
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doubleTapZoom: 2,
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wheelAction: 'scroll',
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// Snap
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snap: false,
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snapThreshold: 1,
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// Events
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onRefresh: null,
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onBeforeScrollStart: function (e) { e.preventDefault(); },
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onScrollStart: null,
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onBeforeScrollMove: null,
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onScrollMove: null,
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onBeforeScrollEnd: null,
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onScrollEnd: null,
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onTouchEnd: null,
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onDestroy: null,
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onZoomStart: null,
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onZoom: null,
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onZoomEnd: null
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};
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// User defined options
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for (i in options) that.options[i] = options[i];
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// Set starting position
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that.x = that.options.x;
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that.y = that.options.y;
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// Normalize options
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that.options.useTransform = hasTransform && that.options.useTransform;
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that.options.zoom = that.options.useTransform && that.options.zoom;
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that.options.useTransition = hasTransitionEnd && that.options.useTransition;
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/* XXX removed for now...
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// Helpers FIX ANDROID BUG!
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// translate3d and scale doesn't work together!
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// Ignoring 3d ONLY WHEN YOU SET that.options.zoom
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if ( that.options.zoom && isAndroid ){
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translateZ = '';
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}
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*/
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// Set some default styles
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that.scroller.style[transitionProperty] = that.options.useTransform ? cssVendor + 'transform' : 'top left';
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that.scroller.style[transitionDuration] = '0';
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that.scroller.style[transformOrigin] = '0 0';
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if (that.options.useTransition) that.scroller.style[transitionTimingFunction] = 'cubic-bezier(0.33,0.66,0.66,1)';
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if (that.options.useTransform)
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that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px)' + translateZ;
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else
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that.scroller.style.cssText += ';position:absolute;top:' + that.y + 'px;left:' + that.x + 'px';
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that.refresh();
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that._bind(RESIZE_EV, window);
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that._bind(START_EV);
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if (!hasTouch) {
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if (that.options.wheelAction != 'none') {
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that._bind('DOMMouseScroll');
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that._bind('mousewheel');
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}
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}
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if (that.options.checkDOMChanges) that.checkDOMTime = setInterval(function () {
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that._checkDOMChanges();
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}, 500);
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};
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// Prototype
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iScroll.prototype = {
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enabled: true,
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x: 0,
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y: 0,
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steps: [],
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scale: 1,
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currPageX: 0, currPageY: 0,
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pagesX: [], pagesY: [],
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aniTime: null,
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wheelZoomCount: 0,
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handleEvent: function (e) {
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var that = this;
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switch(e.type) {
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case START_EV:
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if (!hasTouch && e.button !== 0) return;
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that._start(e);
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break;
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case MOVE_EV: that._move(e); break;
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case END_EV:
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case CANCEL_EV: that._end(e); break;
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case RESIZE_EV: that._resize(); break;
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case 'DOMMouseScroll': case 'mousewheel': that._wheel(e); break;
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case TRNEND_EV: that._transitionEnd(e); break;
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}
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},
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_checkDOMChanges: function () {
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if (this.moved || this.zoomed || this.animating ||
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(this.scrollerW == this.scroller.offsetWidth * this.scale && this.scrollerH == this.scroller.offsetHeight * this.scale)) return;
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this.refresh();
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},
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_resize: function () {
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var that = this;
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setTimeout(function () { that.refresh(); }, isAndroid ? 200 : 0);
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},
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_pos: function (x, y) {
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/* XXX keep scrolling in zoomed mode...
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if (this.zoomed) return;
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*/
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x = this.hScroll ? x : 0;
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y = this.vScroll ? y : 0;
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if (this.options.useTransform) {
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this.scroller.style[transform] = 'translate(' + x + 'px,' + y + 'px) scale(' + this.scale + ')' + translateZ;
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} else {
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x = m.round(x);
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y = m.round(y);
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this.scroller.style.left = x + 'px';
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this.scroller.style.top = y + 'px';
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}
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this.x = x;
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this.y = y;
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},
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_start: function (e) {
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var that = this,
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point = hasTouch ? e.touches[0] : e,
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matrix, x, y,
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c1, c2;
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if (!that.enabled) return;
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if (that.options.onBeforeScrollStart) that.options.onBeforeScrollStart.call(that, e);
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if (that.options.useTransition || that.options.zoom) that._transitionTime(0);
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that.moved = false;
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that.animating = false;
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that.zoomed = false;
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that.distX = 0;
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that.distY = 0;
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that.absDistX = 0;
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that.absDistY = 0;
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that.dirX = 0;
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that.dirY = 0;
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/* XXX used only for zoom...
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// Gesture start
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if (that.options.zoom && hasTouch && e.touches.length > 1) {
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c1 = m.abs(e.touches[0].pageX-e.touches[1].pageX);
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c2 = m.abs(e.touches[0].pageY-e.touches[1].pageY);
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that.touchesDistStart = m.sqrt(c1 * c1 + c2 * c2);
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that.originX = m.abs(e.touches[0].pageX + e.touches[1].pageX - that.wrapperOffsetLeft * 2) / 2 - that.x;
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that.originY = m.abs(e.touches[0].pageY + e.touches[1].pageY - that.wrapperOffsetTop * 2) / 2 - that.y;
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if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
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}
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*/
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if (that.options.momentum) {
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if (that.options.useTransform) {
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// Very lame general purpose alternative to CSSMatrix
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matrix = getComputedStyle(that.scroller, null)[transform].replace(/[^0-9\-.,]/g, '').split(',');
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x = +(matrix[12] || matrix[4]);
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y = +(matrix[13] || matrix[5]);
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} else {
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x = +getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '');
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y = +getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '');
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}
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if (x != that.x || y != that.y) {
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if (that.options.useTransition) that._unbind(TRNEND_EV);
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else cancelFrame(that.aniTime);
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that.steps = [];
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that._pos(x, y);
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if (that.options.onScrollEnd) that.options.onScrollEnd.call(that);
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}
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}
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that.absStartX = that.x; // Needed by snap threshold
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that.absStartY = that.y;
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that.startX = that.x;
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that.startY = that.y;
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that.pointX = point.pageX;
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that.pointY = point.pageY;
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that.startTime = e.timeStamp || Date.now();
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if (that.options.onScrollStart) that.options.onScrollStart.call(that, e);
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that._bind(MOVE_EV, window);
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that._bind(END_EV, window);
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that._bind(CANCEL_EV, window);
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},
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_move: function (e) {
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var that = this,
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point = hasTouch ? e.touches[0] : e,
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deltaX = point.pageX - that.pointX,
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deltaY = point.pageY - that.pointY,
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newX = that.x + deltaX,
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newY = that.y + deltaY,
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c1, c2, scale,
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timestamp = e.timeStamp || Date.now();
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// onBeforeScrollMove event...
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if (that.options.onBeforeScrollMove) that.options.onBeforeScrollMove.call(that, e);
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that.pointX = point.pageX;
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that.pointY = point.pageY;
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// Slow down if outside of the boundaries
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if (newX > 0 || newX < that.maxScrollX) {
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newX = (that.options.bounce ? that.x + (deltaX / 2)
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: newX >= 0 || that.maxScrollX >= 0 ? 0
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: that.maxScrollX);
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}
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if (newY > that.minScrollY || newY < that.maxScrollY) {
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newY = (that.options.bounce ? that.y + (deltaY / 2)
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: newY >= that.minScrollY || that.maxScrollY >= 0 ? that.minScrollY
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: that.maxScrollY);
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}
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that.distX += deltaX;
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that.distY += deltaY;
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that.absDistX = m.abs(that.distX);
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that.absDistY = m.abs(that.distY);
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// XXX this appears to be a move threshold...
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if (that.absDistX < 6 && that.absDistY < 6) {
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return;
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}
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// Lock direction
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if (that.options.lockDirection) {
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if (that.absDistX > that.absDistY + 5) {
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newY = that.y;
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deltaY = 0;
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} else if (that.absDistY > that.absDistX + 5) {
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newX = that.x;
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deltaX = 0;
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}
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}
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that.moved = true;
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// XXX do the actual move...
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that._pos(newX, newY);
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that.dirX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
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that.dirY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;
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if (timestamp - that.startTime > 300) {
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that.startTime = timestamp;
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that.startX = that.x;
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that.startY = that.y;
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}
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if (that.options.onScrollMove) that.options.onScrollMove.call(that, e);
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},
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_end: function (e) {
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if (hasTouch && e.touches.length !== 0) return;
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var that = this,
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point = hasTouch ? e.changedTouches[0] : e,
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target, ev,
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momentumX = { dist:0, time:0 },
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momentumY = { dist:0, time:0 },
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duration = (e.timeStamp || Date.now()) - that.startTime,
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newPosX = that.x,
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newPosY = that.y,
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distX, distY,
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newDuration,
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snap,
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scale;
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that._unbind(MOVE_EV, window);
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that._unbind(END_EV, window);
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that._unbind(CANCEL_EV, window);
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if (that.options.onBeforeScrollEnd) that.options.onBeforeScrollEnd.call(that, e);
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// XXX do we need this?
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if (that.zoomed) {
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scale = that.scale * that.lastScale;
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//scale = Math.max(that.options.zoomMin, scale);
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//scale = Math.min(that.options.zoomMax, scale);
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that.lastScale = scale / that.scale;
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that.scale = scale;
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that.x = that.originX - that.originX * that.lastScale + that.x;
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that.y = that.originY - that.originY * that.lastScale + that.y;
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that.scroller.style[transitionDuration] = '200ms';
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that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + that.scale + ')' + translateZ;
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that.zoomed = false;
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that.refresh();
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if (that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
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return;
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}
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if (!that.moved) {
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if (hasTouch) {
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if (that.doubleTapTimer && that.options.zoom) {
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// Double tapped
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clearTimeout(that.doubleTapTimer);
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that.doubleTapTimer = null;
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// XXX change this to a double tap event...
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//if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
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/* XXX Zoom...
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that.zoom(that.pointX, that.pointY, that.scale == 1 ? that.options.doubleTapZoom : 1);
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if (that.options.onZoomEnd) {
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setTimeout(function() {
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that.options.onZoomEnd.call(that, e);
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}, 200); // 200 is default zoom duration
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}
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*/
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} else if (this.options.handleClick) {
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that.doubleTapTimer = setTimeout(function () {
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that.doubleTapTimer = null;
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// Find the last touched element
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target = point.target;
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while (target.nodeType != 1) target = target.parentNode;
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if (target.tagName != 'SELECT' && target.tagName != 'INPUT' && target.tagName != 'TEXTAREA') {
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ev = doc.createEvent('MouseEvents');
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ev.initMouseEvent('click', true, true, e.view, 1,
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point.screenX, point.screenY, point.clientX, point.clientY,
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e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
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0, null);
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ev._fake = true;
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target.dispatchEvent(ev);
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}
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}, that.options.zoom ? 250 : 0);
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}
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}
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that._resetPos(400);
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if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
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return;
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}
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if (duration < 300 && that.options.momentum) {
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momentumX = newPosX ? that._momentum(newPosX - that.startX, duration, -that.x, that.scrollerW - that.wrapperW + that.x, that.options.bounce ? that.wrapperW : 0) : momentumX;
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momentumY = newPosY ? that._momentum(newPosY - that.startY, duration, -that.y, (that.maxScrollY < 0 ? that.scrollerH - that.wrapperH + that.y - that.minScrollY : 0), that.options.bounce ? that.wrapperH : 0) : momentumY;
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newPosX = that.x + momentumX.dist;
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newPosY = that.y + momentumY.dist;
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if ((that.x > 0 && newPosX > 0) || (that.x < that.maxScrollX && newPosX < that.maxScrollX)) momentumX = { dist:0, time:0 };
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if ((that.y > that.minScrollY && newPosY > that.minScrollY) || (that.y < that.maxScrollY && newPosY < that.maxScrollY)) momentumY = { dist:0, time:0 };
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}
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if (momentumX.dist || momentumY.dist) {
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newDuration = m.max(m.max(momentumX.time, momentumY.time), 10);
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// Do we need to snap?
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if (that.options.snap) {
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distX = newPosX - that.absStartX;
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distY = newPosY - that.absStartY;
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if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) { that.scrollTo(that.absStartX, that.absStartY, 200); }
|
|
else {
|
|
snap = that._snap(newPosX, newPosY);
|
|
newPosX = snap.x;
|
|
newPosY = snap.y;
|
|
newDuration = m.max(snap.time, newDuration);
|
|
}
|
|
}
|
|
|
|
that.scrollTo(m.round(newPosX), m.round(newPosY), newDuration);
|
|
|
|
if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
|
|
return;
|
|
}
|
|
|
|
// Do we need to snap?
|
|
if (that.options.snap) {
|
|
distX = newPosX - that.absStartX;
|
|
distY = newPosY - that.absStartY;
|
|
if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) that.scrollTo(that.absStartX, that.absStartY, 200);
|
|
else {
|
|
snap = that._snap(that.x, that.y);
|
|
if (snap.x != that.x || snap.y != that.y) that.scrollTo(snap.x, snap.y, snap.time);
|
|
}
|
|
|
|
if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
|
|
return;
|
|
}
|
|
|
|
that._resetPos(200);
|
|
if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
|
|
},
|
|
|
|
// XXX
|
|
_resetPos: function (time) {
|
|
var that = this,
|
|
resetX = that.x >= 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x,
|
|
resetY = that.y >= that.minScrollY || that.maxScrollY > 0 ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;
|
|
|
|
if (resetX == that.x && resetY == that.y) {
|
|
if (that.moved) {
|
|
that.moved = false;
|
|
if (that.options.onScrollEnd) that.options.onScrollEnd.call(that); // Execute custom code on scroll end
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
that.scrollTo(resetX, resetY, time || 0);
|
|
},
|
|
|
|
_wheel: function (e) {
|
|
var that = this,
|
|
wheelDeltaX, wheelDeltaY,
|
|
deltaX, deltaY,
|
|
deltaScale;
|
|
|
|
if ('wheelDeltaX' in e) {
|
|
wheelDeltaX = e.wheelDeltaX / 12;
|
|
wheelDeltaY = e.wheelDeltaY / 12;
|
|
} else if('wheelDelta' in e) {
|
|
wheelDeltaX = wheelDeltaY = e.wheelDelta / 12;
|
|
} else if ('detail' in e) {
|
|
wheelDeltaX = wheelDeltaY = -e.detail * 3;
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
if (that.options.wheelAction == 'zoom') {
|
|
deltaScale = that.scale * Math.pow(2, 1/3 * (wheelDeltaY ? wheelDeltaY / Math.abs(wheelDeltaY) : 0));
|
|
if (deltaScale < that.options.zoomMin) deltaScale = that.options.zoomMin;
|
|
if (deltaScale > that.options.zoomMax) deltaScale = that.options.zoomMax;
|
|
|
|
if (deltaScale != that.scale) {
|
|
if (!that.wheelZoomCount && that.options.onZoomStart) that.options.onZoomStart.call(that, e);
|
|
that.wheelZoomCount++;
|
|
|
|
that.zoom(e.pageX, e.pageY, deltaScale, 400);
|
|
|
|
setTimeout(function() {
|
|
that.wheelZoomCount--;
|
|
if (!that.wheelZoomCount && that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
|
|
}, 400);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
deltaX = that.x + wheelDeltaX;
|
|
deltaY = that.y + wheelDeltaY;
|
|
|
|
if (deltaX > 0) deltaX = 0;
|
|
else if (deltaX < that.maxScrollX) deltaX = that.maxScrollX;
|
|
|
|
if (deltaY > that.minScrollY) deltaY = that.minScrollY;
|
|
else if (deltaY < that.maxScrollY) deltaY = that.maxScrollY;
|
|
|
|
if (that.maxScrollY < 0) {
|
|
that.scrollTo(deltaX, deltaY, 0);
|
|
}
|
|
},
|
|
|
|
_transitionEnd: function (e) {
|
|
var that = this;
|
|
|
|
if (e.target != that.scroller) return;
|
|
|
|
that._unbind(TRNEND_EV);
|
|
|
|
that._startAni();
|
|
},
|
|
|
|
|
|
/**
|
|
*
|
|
* Utilities
|
|
*
|
|
*/
|
|
_startAni: function () {
|
|
var that = this,
|
|
startX = that.x, startY = that.y,
|
|
startTime = Date.now(),
|
|
step, easeOut,
|
|
animate;
|
|
|
|
if (that.animating) return;
|
|
|
|
if (!that.steps.length) {
|
|
that._resetPos(400);
|
|
return;
|
|
}
|
|
|
|
step = that.steps.shift();
|
|
|
|
if (step.x == startX && step.y == startY) step.time = 0;
|
|
|
|
that.animating = true;
|
|
that.moved = true;
|
|
|
|
if (that.options.useTransition) {
|
|
that._transitionTime(step.time);
|
|
that._pos(step.x, step.y);
|
|
that.animating = false;
|
|
if (step.time) that._bind(TRNEND_EV);
|
|
else that._resetPos(0);
|
|
return;
|
|
}
|
|
|
|
animate = function () {
|
|
var now = Date.now(),
|
|
newX, newY;
|
|
|
|
if (now >= startTime + step.time) {
|
|
that._pos(step.x, step.y);
|
|
that.animating = false;
|
|
if (that.options.onAnimationEnd) that.options.onAnimationEnd.call(that); // Execute custom code on animation end
|
|
that._startAni();
|
|
return;
|
|
}
|
|
|
|
now = (now - startTime) / step.time - 1;
|
|
easeOut = m.sqrt(1 - now * now);
|
|
newX = (step.x - startX) * easeOut + startX;
|
|
newY = (step.y - startY) * easeOut + startY;
|
|
that._pos(newX, newY);
|
|
if (that.animating) that.aniTime = nextFrame(animate);
|
|
};
|
|
|
|
animate();
|
|
},
|
|
|
|
_transitionTime: function (time) {
|
|
time += 'ms';
|
|
this.scroller.style[transitionDuration] = time;
|
|
},
|
|
|
|
_momentum: function (dist, time, maxDistUpper, maxDistLower, size) {
|
|
var deceleration = 0.0006,
|
|
speed = m.abs(dist) / time,
|
|
newDist = (speed * speed) / (2 * deceleration),
|
|
newTime = 0, outsideDist = 0;
|
|
|
|
// Proportinally reduce speed if we are outside of the boundaries
|
|
if (dist > 0 && newDist > maxDistUpper) {
|
|
outsideDist = size / (6 / (newDist / speed * deceleration));
|
|
maxDistUpper = maxDistUpper + outsideDist;
|
|
speed = speed * maxDistUpper / newDist;
|
|
newDist = maxDistUpper;
|
|
} else if (dist < 0 && newDist > maxDistLower) {
|
|
outsideDist = size / (6 / (newDist / speed * deceleration));
|
|
maxDistLower = maxDistLower + outsideDist;
|
|
speed = speed * maxDistLower / newDist;
|
|
newDist = maxDistLower;
|
|
}
|
|
|
|
newDist = newDist * (dist < 0 ? -1 : 1);
|
|
newTime = speed / deceleration;
|
|
|
|
return { dist: newDist, time: m.round(newTime) };
|
|
},
|
|
|
|
_offset: function (el) {
|
|
var left = -el.offsetLeft,
|
|
top = -el.offsetTop;
|
|
|
|
while (el = el.offsetParent) {
|
|
left -= el.offsetLeft;
|
|
top -= el.offsetTop;
|
|
}
|
|
|
|
if (el != this.wrapper) {
|
|
left *= this.scale;
|
|
top *= this.scale;
|
|
}
|
|
|
|
return { left: left, top: top };
|
|
},
|
|
|
|
_snap: function (x, y) {
|
|
var that = this,
|
|
i, l,
|
|
page, time,
|
|
sizeX, sizeY;
|
|
|
|
// Check page X
|
|
page = that.pagesX.length - 1;
|
|
for (i=0, l=that.pagesX.length; i<l; i++) {
|
|
if (x >= that.pagesX[i]) {
|
|
page = i;
|
|
break;
|
|
}
|
|
}
|
|
if (page == that.currPageX && page > 0 && that.dirX < 0) page--;
|
|
x = that.pagesX[page];
|
|
sizeX = m.abs(x - that.pagesX[that.currPageX]);
|
|
sizeX = sizeX ? m.abs(that.x - x) / sizeX * 500 : 0;
|
|
that.currPageX = page;
|
|
|
|
// Check page Y
|
|
page = that.pagesY.length-1;
|
|
for (i=0; i<page; i++) {
|
|
if (y >= that.pagesY[i]) {
|
|
page = i;
|
|
break;
|
|
}
|
|
}
|
|
if (page == that.currPageY && page > 0 && that.dirY < 0) page--;
|
|
y = that.pagesY[page];
|
|
sizeY = m.abs(y - that.pagesY[that.currPageY]);
|
|
sizeY = sizeY ? m.abs(that.y - y) / sizeY * 500 : 0;
|
|
that.currPageY = page;
|
|
|
|
// Snap with constant speed (proportional duration)
|
|
time = m.round(m.max(sizeX, sizeY)) || 200;
|
|
|
|
return { x: x, y: y, time: time };
|
|
},
|
|
|
|
_bind: function (type, el, bubble) {
|
|
(el || this.scroller).addEventListener(type, this, !!bubble);
|
|
},
|
|
|
|
_unbind: function (type, el, bubble) {
|
|
(el || this.scroller).removeEventListener(type, this, !!bubble);
|
|
},
|
|
|
|
|
|
/**
|
|
*
|
|
* Public methods
|
|
*
|
|
*/
|
|
destroy: function () {
|
|
var that = this;
|
|
|
|
that.scroller.style[transform] = '';
|
|
|
|
// Remove the event listeners
|
|
that._unbind(RESIZE_EV, window);
|
|
that._unbind(START_EV);
|
|
that._unbind(MOVE_EV, window);
|
|
that._unbind(END_EV, window);
|
|
that._unbind(CANCEL_EV, window);
|
|
|
|
if (!that.options.hasTouch) {
|
|
that._unbind('DOMMouseScroll');
|
|
that._unbind('mousewheel');
|
|
}
|
|
|
|
if (that.options.useTransition) that._unbind(TRNEND_EV);
|
|
|
|
if (that.options.checkDOMChanges) clearInterval(that.checkDOMTime);
|
|
|
|
if (that.options.onDestroy) that.options.onDestroy.call(that);
|
|
},
|
|
|
|
refresh: function () {
|
|
var that = this,
|
|
offset,
|
|
i, l,
|
|
els,
|
|
pos = 0,
|
|
page = 0;
|
|
|
|
//if (that.scale < that.options.zoomMin) that.scale = that.options.zoomMin;
|
|
that.wrapperW = that.wrapper.clientWidth || 1;
|
|
that.wrapperH = that.wrapper.clientHeight || 1;
|
|
|
|
that.minScrollY = -that.options.topOffset || 0;
|
|
that.scrollerW = m.round(that.scroller.offsetWidth * that.scale);
|
|
that.scrollerH = m.round((that.scroller.offsetHeight + that.minScrollY) * that.scale);
|
|
that.maxScrollX = that.wrapperW - that.scrollerW;
|
|
that.maxScrollY = that.wrapperH - that.scrollerH + that.minScrollY;
|
|
that.dirX = 0;
|
|
that.dirY = 0;
|
|
|
|
if (that.options.onRefresh) that.options.onRefresh.call(that);
|
|
|
|
that.hScroll = that.options.hScroll && that.maxScrollX < 0;
|
|
that.vScroll = that.options.vScroll && (!that.options.bounceLock && !that.hScroll || that.scrollerH > that.wrapperH);
|
|
|
|
offset = that._offset(that.wrapper);
|
|
that.wrapperOffsetLeft = -offset.left;
|
|
that.wrapperOffsetTop = -offset.top;
|
|
|
|
// Prepare snap
|
|
if (typeof that.options.snap == 'string') {
|
|
that.pagesX = [];
|
|
that.pagesY = [];
|
|
els = that.scroller.querySelectorAll(that.options.snap);
|
|
for (i=0, l=els.length; i<l; i++) {
|
|
pos = that._offset(els[i]);
|
|
pos.left += that.wrapperOffsetLeft;
|
|
pos.top += that.wrapperOffsetTop;
|
|
that.pagesX[i] = pos.left < that.maxScrollX ? that.maxScrollX : pos.left * that.scale;
|
|
that.pagesY[i] = pos.top < that.maxScrollY ? that.maxScrollY : pos.top * that.scale;
|
|
}
|
|
} else if (that.options.snap) {
|
|
that.pagesX = [];
|
|
while (pos >= that.maxScrollX) {
|
|
that.pagesX[page] = pos;
|
|
pos = pos - that.wrapperW;
|
|
page++;
|
|
}
|
|
if (that.maxScrollX%that.wrapperW) that.pagesX[that.pagesX.length] = that.maxScrollX - that.pagesX[that.pagesX.length-1] + that.pagesX[that.pagesX.length-1];
|
|
|
|
pos = 0;
|
|
page = 0;
|
|
that.pagesY = [];
|
|
while (pos >= that.maxScrollY) {
|
|
that.pagesY[page] = pos;
|
|
pos = pos - that.wrapperH;
|
|
page++;
|
|
}
|
|
if (that.maxScrollY%that.wrapperH) that.pagesY[that.pagesY.length] = that.maxScrollY - that.pagesY[that.pagesY.length-1] + that.pagesY[that.pagesY.length-1];
|
|
}
|
|
|
|
if (!that.zoomed) {
|
|
that.scroller.style[transitionDuration] = '0';
|
|
that._resetPos(400);
|
|
}
|
|
},
|
|
|
|
scrollTo: function (x, y, time, relative) {
|
|
var that = this,
|
|
step = x,
|
|
i, l;
|
|
|
|
that.stop();
|
|
|
|
if (!step.length) step = [{ x: x, y: y, time: time, relative: relative }];
|
|
|
|
for (i=0, l=step.length; i<l; i++) {
|
|
if (step[i].relative) { step[i].x = that.x - step[i].x; step[i].y = that.y - step[i].y; }
|
|
that.steps.push({ x: step[i].x, y: step[i].y, time: step[i].time || 0 });
|
|
}
|
|
|
|
that._startAni();
|
|
},
|
|
|
|
scrollToElement: function (el, time) {
|
|
var that = this, pos;
|
|
el = el.nodeType ? el : that.scroller.querySelector(el);
|
|
if (!el) return;
|
|
|
|
pos = that._offset(el);
|
|
pos.left += that.wrapperOffsetLeft;
|
|
pos.top += that.wrapperOffsetTop;
|
|
|
|
pos.left = pos.left > 0 ? 0 : pos.left < that.maxScrollX ? that.maxScrollX : pos.left;
|
|
pos.top = pos.top > that.minScrollY ? that.minScrollY : pos.top < that.maxScrollY ? that.maxScrollY : pos.top;
|
|
time = time === undefined ? m.max(m.abs(pos.left)*2, m.abs(pos.top)*2) : time;
|
|
|
|
that.scrollTo(pos.left, pos.top, time);
|
|
},
|
|
|
|
scrollToPage: function (pageX, pageY, time) {
|
|
var that = this, x, y;
|
|
|
|
time = time === undefined ? 400 : time;
|
|
|
|
if (that.options.onScrollStart) that.options.onScrollStart.call(that);
|
|
|
|
if (that.options.snap) {
|
|
pageX = pageX == 'next' ? that.currPageX+1 : pageX == 'prev' ? that.currPageX-1 : pageX;
|
|
pageY = pageY == 'next' ? that.currPageY+1 : pageY == 'prev' ? that.currPageY-1 : pageY;
|
|
|
|
pageX = pageX < 0 ? 0 : pageX > that.pagesX.length-1 ? that.pagesX.length-1 : pageX;
|
|
pageY = pageY < 0 ? 0 : pageY > that.pagesY.length-1 ? that.pagesY.length-1 : pageY;
|
|
|
|
that.currPageX = pageX;
|
|
that.currPageY = pageY;
|
|
x = that.pagesX[pageX];
|
|
y = that.pagesY[pageY];
|
|
} else {
|
|
x = -that.wrapperW * pageX;
|
|
y = -that.wrapperH * pageY;
|
|
if (x < that.maxScrollX) x = that.maxScrollX;
|
|
if (y < that.maxScrollY) y = that.maxScrollY;
|
|
}
|
|
|
|
that.scrollTo(x, y, time);
|
|
},
|
|
|
|
disable: function () {
|
|
this.stop();
|
|
this._resetPos(0);
|
|
this.enabled = false;
|
|
|
|
// If disabled after touchstart we make sure that there are no left over events
|
|
this._unbind(MOVE_EV, window);
|
|
this._unbind(END_EV, window);
|
|
this._unbind(CANCEL_EV, window);
|
|
},
|
|
|
|
enable: function () {
|
|
this.enabled = true;
|
|
},
|
|
|
|
stop: function () {
|
|
if (this.options.useTransition) this._unbind(TRNEND_EV);
|
|
else cancelFrame(this.aniTime);
|
|
this.steps = [];
|
|
this.moved = false;
|
|
this.animating = false;
|
|
},
|
|
|
|
zoom: function (x, y, scale, time) {
|
|
var that = this,
|
|
relScale = scale / that.scale;
|
|
|
|
if (!that.options.useTransform) return;
|
|
|
|
that.zoomed = true;
|
|
time = time === undefined ? 200 : time;
|
|
x = x - that.wrapperOffsetLeft - that.x;
|
|
y = y - that.wrapperOffsetTop - that.y;
|
|
that.x = x - x * relScale + that.x;
|
|
that.y = y - y * relScale + that.y;
|
|
|
|
that.scale = scale;
|
|
that.refresh();
|
|
|
|
that.x = that.x > 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x;
|
|
that.y = that.y > that.minScrollY ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;
|
|
|
|
that.scroller.style[transitionDuration] = time + 'ms';
|
|
that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + scale + ')' + translateZ;
|
|
that.zoomed = false;
|
|
},
|
|
|
|
isReady: function () {
|
|
return !this.moved && !this.zoomed && !this.animating;
|
|
}
|
|
};
|
|
|
|
function prefixStyle (style) {
|
|
if ( vendor === '' ) return style;
|
|
|
|
style = style.charAt(0).toUpperCase() + style.substr(1);
|
|
return vendor + style;
|
|
}
|
|
|
|
dummyStyle = null; // for the sake of it
|
|
|
|
if (typeof exports !== 'undefined') exports.iScroll = iScroll;
|
|
else window.iScroll = iScroll;
|
|
|
|
})(window, document);
|
|
|
|
// vim:set sw=4 ts=4 :
|