/**
* bxslider v4.1.2 - fully loaded, responsive content slider
* http://bxslider.com
*
* copyright 2014, steven wanderski - http://stevenwanderski.com - http://bxcreative.com
* written while drinking belgian ales and listening to jazz
*
mode: 'horizontal', // 'horizontal', 'vertical', 'fade' 定义slider滚动的方向，有三个值可供选择
infiniteloop: true, // true, false - display first slide after last 无限循环
hidecontrolonend: false, // true, false - if true, will hide 'next' control on last slide and 'prev' control on first 如果设置true，将会在最后一个幻灯片隐藏“next”，在最前面的幻灯片因此“prev”
controls: true, // true, false - previous and next controls 是否显示“previous”和“next”按钮
speed: 500, // integer - in ms, duration of time slide transitions will occupy 速度，单位为毫秒
easing: 'swing', // used with jquery.easing.1.3.js - see http://gsgd.co.uk/sandbox/jquery/easing/ for available options
pager: true, // true / false - display a pager
pagerselector: null, // jquery selector - element to contain the pager. ex: '#pager'
pagertype: 'full', // 'full', 'short' - if 'full' pager displays 1,2,3... if 'short' pager displays 1 / 4 如果设置full，将显示1，2，3……，如果设置short，将显示1/4 .
pagerlocation: 'bottom', // 'bottom', 'top' - location of pager 页码的位置
pagershortseparator: '/', // string - ex: 'of' pager would display 1 of 4 页面分隔符
pageractiveclass: 'pager-active', // string - classname attached to the active pager link 当前页码的classname
nexttext: 'next', // string - text displayed for 'next' control 下一页的文字
nextimage: '', // string - filepath of image used for 'next' control. ex: 'images/next.jpg' 可以设置下一页为图片
nextselector: null, // jquery selector - element to contain the next control. ex: '#next'
prevtext: 'prev', // string - text displayed for 'previous' control 上一页的文字
previmage: '', // string - filepath of image used for 'previous' control. ex: 'images/prev.jpg' 上一页的图片
prevselector: null, // jquery selector - element to contain the previous control. ex: '#next'
captions: false, // true, false - display image captions (reads the image 'title' tag) 是否显示图片的标题，读取图片的title属性的内容。
captionsselector: null, // jquery selector - element to contain the captions. ex: '#captions'
auto: false, // true, false - make slideshow change automatically 幻灯片自动滚动
autodirection: 'next', // 'next', 'prev' - direction in which auto show will traverse 自动滚动的顺序
autocontrols: false, // true, false - show 'start' and 'stop' controls for auto show 自动滚动的控制键
autocontrolsselector: null, // jquery selector - element to contain the auto controls. ex: '#auto-controls'
autostart: true, // true, false - if false show will wait for 'start' control to activate
autohover: false, // true, false - if true show will pause on mouseover 设置鼠标mouseover将会使自动滚动暂停
autodelay: 0, // integer - in ms, the amount of time before starting the auto show
pause: 3000, // integer - in ms, the duration between each slide transition 过渡时间
starttext: 'start', // string - text displayed for 'start' control 开始按钮的文字
startimage: '', // string - filepath of image used for 'start' control. ex: 'images/start.jpg' 开始按钮的图片
stoptext: 'stop', // string - text displayed for 'stop' control 停止按钮的文本
stopimage: '', // string - filepath of image used for 'stop' control. ex: 'images/stop.jpg' 停止按钮的图片
ticker: false, // true, false - continuous motion ticker mode (think news ticker)
// note: autocontrols and autocontrolsselector apply to ticker!
tickerspeed: 5000, // integer - has an inverse effect on speed. therefore, a value of 10000 will
// scroll very slowly while a value of 50 will scroll very quickly.
tickerdirection: 'next', // 'next', 'prev' - direction in which ticker show will traverse
tickerhover: false, // true, false - if true ticker will pause on mouseover
wrapperclass: 'bx-wrapper', // string - classname attached to the slider wraper
startingslide: 0, // integer - show will start on specified slide. note: slides are zero based!
displayslideqty: 1, // integer - number of slides to display at once
moveslideqty: 1, // integer - number of slides to move at once
randomstart: false, // true, false - if true show will start on a random slide
* released under the mit license - http://opensource.org/licenses/mit
*/
;(function($){
var plugin = {};
var defaults = {
// general
mode: 'horizontal',
slideselector: '',
infiniteloop: true,
hidecontrolonend: false,
speed: 500,
easing: null,
slidemargin: 0,
startslide: 0,
randomstart: false,
captions: false,
ticker: false,
tickerhover: false,
adaptiveheight: false,
adaptiveheightspeed: 500,
video: false,
usecss: true,
preloadimages: 'visible',
responsive: true,
slidezindex: 50,
wrapperclass: 'bx-wrapper',
// touch
touchenabled: true,
swipethreshold: 50,
onetoonetouch: true,
preventdefaultswipex: true,
preventdefaultswipey: false,
// pager
pager: true,
pagertype: 'full',
pagershortseparator: ' / ',
pagerselector: null,
buildpager: null,
pagercustom: null,
// controls
controls: true,
nexttext: 'next',
prevtext: 'prev',
nextselector: null,
prevselector: null,
autocontrols: false,
starttext: 'start',
stoptext: 'stop',
autocontrolscombine: false,
autocontrolsselector: null,
// auto
auto: false,
pause: 4000,
autostart: true,
autodirection: 'next',
autohover: false,
autodelay: 0,
autoslideforonepage: false,
// carousel
minslides: 1,
maxslides: 1,
moveslides: 0,
slidewidth: 0,
// callbacks
onsliderload: function() {},
onslidebefore: function() {},
onslideafter: function() {},
onslidenext: function() {},
onslideprev: function() {},
onsliderresize: function() {}
}
$.fn.bxslider = function(options){
if(this.length == 0) return this;
// support mutltiple elements
if(this.length > 1){
this.each(function(){$(this).bxslider(options)});
return this;
}
// create a namespace to be used throughout the plugin
var slider = {};
// set a reference to our slider element
var el = this;
plugin.el = this;
/**
* makes slideshow responsive
*/
// first get the original window dimens (thanks alot ie)
var windowwidth = $(window).width();
var windowheight = $(window).height();
/**
* ===================================================================================
* = private functions
* ===================================================================================
*/
/**
* initializes namespace settings to be used throughout plugin
*/
var init = function(){
// merge user-supplied options with the defaults
slider.settings = $.extend({}, defaults, options);
// parse slidewidth setting
slider.settings.slidewidth = parseint(slider.settings.slidewidth);
// store the original children
slider.children = el.children(slider.settings.slideselector);
// check if actual number of slides is less than minslides / maxslides
if(slider.children.length < slider.settings.minslides) slider.settings.minslides = slider.children.length;
if(slider.children.length < slider.settings.maxslides) slider.settings.maxslides = slider.children.length;
// if random start, set the startslide setting to random number
if(slider.settings.randomstart) slider.settings.startslide = math.floor(math.random() * slider.children.length);
// store active slide information
slider.active = { index: slider.settings.startslide }
// store if the slider is in carousel mode (displaying / moving multiple slides)
slider.carousel = slider.settings.minslides > 1 || slider.settings.maxslides > 1;
// if carousel, force preloadimages = 'all'
if(slider.carousel) slider.settings.preloadimages = 'all';
// calculate the min / max width thresholds based on min / max number of slides
// used to setup and update carousel slides dimensions
slider.minthreshold = (slider.settings.minslides * slider.settings.slidewidth) + ((slider.settings.minslides - 1) * slider.settings.slidemargin);
slider.maxthreshold = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
// store the current state of the slider (if currently animating, working is true)
slider.working = false;
// initialize the controls object
slider.controls = {};
// initialize an auto interval
slider.interval = null;
// determine which property to use for transitions
slider.animprop = slider.settings.mode == 'vertical' ? 'top' : 'left';
// determine if hardware acceleration can be used
slider.usingcss = slider.settings.usecss && slider.settings.mode != 'fade' && (function(){
// create our test div element
var div = document.createelement('div');
// css transition properties
var props = ['webkitperspective', 'mozperspective', 'operspective', 'msperspective'];
// test for each property
for(var i in props){
if(div.style[props[i]] !== undefined){
slider.cssprefix = props[i].replace('perspective', '').tolowercase();
slider.animprop = '-' + slider.cssprefix + '-transform';
return true;
}
}
return false;
}());
// if vertical mode always make maxslides and minslides equal
if(slider.settings.mode == 'vertical') slider.settings.maxslides = slider.settings.minslides;
// save original style data
el.data("origstyle", el.attr("style"));
el.children(slider.settings.slideselector).each(function() {
$(this).data("origstyle", $(this).attr("style"));
});
// perform all dom / css modifications
setup();
}
/**
* performs all dom and css modifications
*/
var setup = function(){
// wrap el in a wrapper
el.wrap('');
// store a namspace reference to .bx-viewport
slider.viewport = el.parent();
// add a loading div to display while images are loading
slider.loader = $('');
slider.viewport.prepend(slider.loader);
// set el to a massive width, to hold any needed slides
// also strip any margin and padding from el
el.css({
width: slider.settings.mode == 'horizontal' ? (slider.children.length * 100 + 215) + '%' : 'auto',
position: 'relative'
});
// if using css, add the easing property
if(slider.usingcss && slider.settings.easing){
el.css('-' + slider.cssprefix + '-transition-timing-function', slider.settings.easing);
// if not using css and no easing value was supplied, use the default js animation easing (swing)
}else if(!slider.settings.easing){
slider.settings.easing = 'swing';
}
var slidesshowing = getnumberslidesshowing();
// make modifications to the viewport (.bx-viewport)
slider.viewport.css({
width: '100%',
overflow: 'hidden',
position: 'relative'
});
slider.viewport.parent().css({
maxwidth: getviewportmaxwidth()
});
// make modification to the wrapper (.bx-wrapper)
if(!slider.settings.pager) {
slider.viewport.parent().css({
margin: '0 auto 0px'
});
}
// apply css to all slider children
slider.children.css({
'float': slider.settings.mode == 'horizontal' ? 'left' : 'none',
liststyle: 'none',
position: 'relative'
});
// apply the calculated width after the float is applied to prevent scrollbar interference
slider.children.css('width', getslidewidth());
// if slidemargin is supplied, add the css
if(slider.settings.mode == 'horizontal' && slider.settings.slidemargin > 0) slider.children.css('marginright', slider.settings.slidemargin);
if(slider.settings.mode == 'vertical' && slider.settings.slidemargin > 0) slider.children.css('marginbottom', slider.settings.slidemargin);
// if "fade" mode, add positioning and z-index css
if(slider.settings.mode == 'fade'){
slider.children.css({
position: 'absolute',
zindex: 0,
display: 'none'
});
// prepare the z-index on the showing element
slider.children.eq(slider.settings.startslide).css({zindex: slider.settings.slidezindex, display: 'block'});
}
// create an element to contain all slider controls (pager, start / stop, etc)
slider.controls.el = $('');
// if captions are requested, add them
if(slider.settings.captions) appendcaptions();
// check if startslide is last slide
slider.active.last = slider.settings.startslide == getpagerqty() - 1;
// if video is true, set up the fitvids plugin
if(slider.settings.video) el.fitvids();
// set the default preload selector (visible)
var preloadselector = slider.children.eq(slider.settings.startslide);
if (slider.settings.preloadimages == "all") preloadselector = slider.children;
// only check for control addition if not in "ticker" mode
if(!slider.settings.ticker){
// if pager is requested, add it
if(slider.settings.pager) appendpager();
// if controls are requested, add them
if(slider.settings.controls) appendcontrols();
// if auto is true, and auto controls are requested, add them
if(slider.settings.auto && slider.settings.autocontrols) appendcontrolsauto();
// if any control option is requested, add the controls wrapper
if(slider.settings.controls || slider.settings.autocontrols || slider.settings.pager) slider.viewport.after(slider.controls.el);
// if ticker mode, do not allow a pager
}else{
slider.settings.pager = false;
}
// preload all images, then perform final dom / css modifications that depend on images being loaded
loadelements(preloadselector, start);
}
var loadelements = function(selector, callback){
var total = selector.find('img, iframe').length;
if (total == 0){
callback();
return;
}
var count = 0;
selector.find('img, iframe').each(function(){
$(this).one('load', function() {
if(++count == total) callback();
}).each(function() {
if(this.complete) $(this).load();
});
});
}
/**
* start the slider
*/
var start = function(){
// if infinite loop, prepare additional slides
if(slider.settings.infiniteloop && slider.settings.mode != 'fade' && !slider.settings.ticker){
var slice = slider.settings.mode == 'vertical' ? slider.settings.minslides : slider.settings.maxslides;
var sliceappend = slider.children.slice(0, slice).clone().addclass('bx-clone');
var sliceprepend = slider.children.slice(-slice).clone().addclass('bx-clone');
el.append(sliceappend).prepend(sliceprepend);
}
// remove the loading dom element
slider.loader.remove();
// set the left / top position of "el"
setslideposition();
// if "vertical" mode, always use adaptiveheight to prevent odd behavior
if (slider.settings.mode == 'vertical') slider.settings.adaptiveheight = true;
// set the viewport height
slider.viewport.height(getviewportheight());
// make sure everything is positioned just right (same as a window resize)
el.redrawslider();
// onsliderload callback
slider.settings.onsliderload(slider.active.index);
// slider has been fully initialized
slider.initialized = true;
// bind the resize call to the window
if (slider.settings.responsive) $(window).bind('resize', resizewindow);
// if auto is true and has more than 1 page, start the show
if (slider.settings.auto && slider.settings.autostart && (getpagerqty() > 1 || slider.settings.autoslideforonepage)) initauto();
// if ticker is true, start the ticker
if (slider.settings.ticker) initticker();
// if pager is requested, make the appropriate pager link active
if (slider.settings.pager) updatepageractive(slider.settings.startslide);
// check for any updates to the controls (like hidecontrolonend updates)
if (slider.settings.controls) updatedirectioncontrols();
// if touchenabled is true, setup the touch events
if (slider.settings.touchenabled && !slider.settings.ticker) inittouch();
}
/**
* returns the calculated height of the viewport, used to determine either adaptiveheight or the maxheight value
*/
var getviewportheight = function(){
var height = 0;
// first determine which children (slides) should be used in our height calculation
var children = $();
// if mode is not "vertical" and adaptiveheight is false, include all children
if(slider.settings.mode != 'vertical' && !slider.settings.adaptiveheight){
children = slider.children;
}else{
// if not carousel, return the single active child
if(!slider.carousel){
children = slider.children.eq(slider.active.index);
// if carousel, return a slice of children
}else{
// get the individual slide index
var currentindex = slider.settings.moveslides == 1 ? slider.active.index : slider.active.index * getmoveby();
// add the current slide to the children
children = slider.children.eq(currentindex);
// cycle through the remaining "showing" slides
for (i = 1; i <= slider.settings.maxslides - 1; i++){
// if looped back to the start
if(currentindex + i >= slider.children.length){
children = children.add(slider.children.eq(i - 1));
}else{
children = children.add(slider.children.eq(currentindex + i));
}
}
}
}
// if "vertical" mode, calculate the sum of the heights of the children
if(slider.settings.mode == 'vertical'){
children.each(function(index) {
height += $(this).outerheight();
});
// add user-supplied margins
if(slider.settings.slidemargin > 0){
height += slider.settings.slidemargin * (slider.settings.minslides - 1);
}
// if not "vertical" mode, calculate the max height of the children
}else{
height = math.max.apply(math, children.map(function(){
return $(this).outerheight(false);
}).get());
}
if(slider.viewport.css('box-sizing') == 'border-box'){
height += parsefloat(slider.viewport.css('padding-top')) + parsefloat(slider.viewport.css('padding-bottom')) +
parsefloat(slider.viewport.css('border-top-width')) + parsefloat(slider.viewport.css('border-bottom-width'));
}else if(slider.viewport.css('box-sizing') == 'padding-box'){
height += parsefloat(slider.viewport.css('padding-top')) + parsefloat(slider.viewport.css('padding-bottom'));
}
return height;
}
/**
* returns the calculated width to be used for the outer wrapper / viewport
*/
var getviewportmaxwidth = function(){
var width = '100%';
if(slider.settings.slidewidth > 0){
if(slider.settings.mode == 'horizontal'){
width = (slider.settings.maxslides * slider.settings.slidewidth) + ((slider.settings.maxslides - 1) * slider.settings.slidemargin);
}else{
width = slider.settings.slidewidth;
}
}
return width;
}
/**
* returns the calculated width to be applied to each slide
*/
var getslidewidth = function(){
// start with any user-supplied slide width
var newelwidth = slider.settings.slidewidth;
// get the current viewport width
var wrapwidth = slider.viewport.width();
// if slide width was not supplied, or is larger than the viewport use the viewport width
if(slider.settings.slidewidth == 0 ||
(slider.settings.slidewidth > wrapwidth && !slider.carousel) ||
slider.settings.mode == 'vertical'){
newelwidth = wrapwidth;
// if carousel, use the thresholds to determine the width
}else if(slider.settings.maxslides > 1 && slider.settings.mode == 'horizontal'){
if(wrapwidth > slider.maxthreshold){
// newelwidth = (wrapwidth - (slider.settings.slidemargin * (slider.settings.maxslides - 1))) / slider.settings.maxslides;
}else if(wrapwidth < slider.minthreshold){
newelwidth = (wrapwidth - (slider.settings.slidemargin * (slider.settings.minslides - 1))) / slider.settings.minslides;
}
}
return newelwidth;
}
/**
* returns the number of slides currently visible in the viewport (includes partially visible slides)
*/
var getnumberslidesshowing = function(){
var slidesshowing = 1;
if(slider.settings.mode == 'horizontal' && slider.settings.slidewidth > 0){
// if viewport is smaller than minthreshold, return minslides
if(slider.viewport.width() < slider.minthreshold){
slidesshowing = slider.settings.minslides;
// if viewport is larger than minthreshold, return maxslides
}else if(slider.viewport.width() > slider.maxthreshold){
slidesshowing = slider.settings.maxslides;
// if viewport is between min / max thresholds, divide viewport width by first child width
}else{
var childwidth = slider.children.first().width() + slider.settings.slidemargin;
slidesshowing = math.floor((slider.viewport.width() +
slider.settings.slidemargin) / childwidth);
}
// if "vertical" mode, slides showing will always be minslides
}else if(slider.settings.mode == 'vertical'){
slidesshowing = slider.settings.minslides;
}
return slidesshowing;
}
/**
* returns the number of pages (one full viewport of slides is one "page")
*/
var getpagerqty = function(){
var pagerqty = 0;
// if moveslides is specified by the user
if(slider.settings.moveslides > 0){
if(slider.settings.infiniteloop){
pagerqty = math.ceil(slider.children.length / getmoveby());
}else{
// use a while loop to determine pages
var breakpoint = 0;
var counter = 0
// when breakpoint goes above children length, counter is the number of pages
while (breakpoint < slider.children.length){
++pagerqty;
breakpoint = counter + getnumberslidesshowing();
counter += slider.settings.moveslides <= getnumberslidesshowing() ? slider.settings.moveslides : getnumberslidesshowing();
}
}
// if moveslides is 0 (auto) divide children length by sides showing, then round up
}else{
pagerqty = math.ceil(slider.children.length / getnumberslidesshowing());
}
return pagerqty;
}
/**
* returns the number of indivual slides by which to shift the slider
*/
var getmoveby = function(){
// if moveslides was set by the user and moveslides is less than number of slides showing
if(slider.settings.moveslides > 0 && slider.settings.moveslides <= getnumberslidesshowing()){
return slider.settings.moveslides;
}
// if moveslides is 0 (auto)
return getnumberslidesshowing();
}
/**
* sets the slider's (el) left or top position
*/
var setslideposition = function(){
// if last slide, not infinite loop, and number of children is larger than specified maxslides
if(slider.children.length > slider.settings.maxslides && slider.active.last && !slider.settings.infiniteloop){
if (slider.settings.mode == 'horizontal'){
// get the last child's position
var lastchild = slider.children.last();
var position = lastchild.position();
// set the left position
setpositionproperty(-(position.left - (slider.viewport.width() - lastchild.outerwidth())), 'reset', 0);
}else if(slider.settings.mode == 'vertical'){
// get the last showing index's position
var lastshowingindex = slider.children.length - slider.settings.minslides;
var position = slider.children.eq(lastshowingindex).position();
// set the top position
setpositionproperty(-position.top, 'reset', 0);
}
// if not last slide
}else{
// get the position of the first showing slide
var position = slider.children.eq(slider.active.index * getmoveby()).position();
// check for last slide
if (slider.active.index == getpagerqty() - 1) slider.active.last = true;
// set the repective position
if (position != undefined){
if (slider.settings.mode == 'horizontal') setpositionproperty(-position.left, 'reset', 0);
else if (slider.settings.mode == 'vertical') setpositionproperty(-position.top, 'reset', 0);
}
}
}
/**
* sets the el's animating property position (which in turn will sometimes animate el).
* if using css, sets the transform property. if not using css, sets the top / left property.
*
* @param value (int)
* - the animating property's value
*
* @param type (string) 'slider', 'reset', 'ticker'
* - the type of instance for which the function is being
*
* @param duration (int)
* - the amount of time (in ms) the transition should occupy
*
* @param params (array) optional
* - an optional parameter containing any variables that need to be passed in
*/
var setpositionproperty = function(value, type, duration, params){
// use css transform
if(slider.usingcss){
// determine the translate3d value
var propvalue = slider.settings.mode == 'vertical' ? 'translate3d(0, ' + value + 'px, 0)' : 'translate3d(' + value + 'px, 0, 0)';
// add the css transition-duration
el.css('-' + slider.cssprefix + '-transition-duration', duration / 1000 + 's');
if(type == 'slide'){
// set the property value
el.css(slider.animprop, propvalue);
// bind a callback method - executes when css transition completes
el.bind('transitionend webkittransitionend otransitionend mstransitionend', function(){
// unbind the callback
el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
updateafterslidetransition();
});
}else if(type == 'reset'){
el.css(slider.animprop, propvalue);
}else if(type == 'ticker'){
// make the transition use 'linear'
el.css('-' + slider.cssprefix + '-transition-timing-function', 'linear');
el.css(slider.animprop, propvalue);
// bind a callback method - executes when css transition completes
el.bind('transitionend webkittransitionend otransitionend mstransitionend', function(){
// unbind the callback
el.unbind('transitionend webkittransitionend otransitionend mstransitionend');
// reset the position
setpositionproperty(params['resetvalue'], 'reset', 0);
// start the loop again
tickerloop();
});
}
// use js animate
}else{
var animateobj = {};
animateobj[slider.animprop] = value;
if(type == 'slide'){
el.animate(animateobj, duration, slider.settings.easing, function(){
updateafterslidetransition();
});
}else if(type == 'reset'){
el.css(slider.animprop, value)
}else if(type == 'ticker'){
el.animate(animateobj, speed, 'linear', function(){
setpositionproperty(params['resetvalue'], 'reset', 0);
// run the recursive loop after animation
tickerloop();
});
}
}
}
/**
* populates the pager with proper amount of pages
*/
var populatepager = function(){
var pagerhtml = '';
var pagerqty = getpagerqty();
// loop through each pager item
for(var i=0; i < pagerqty; i++){
var linkcontent = '';
// if a buildpager function is supplied, use it to get pager link value, else use index + 1
if(slider.settings.buildpager && $.isfunction(slider.settings.buildpager)){
linkcontent = slider.settings.buildpager(i);
slider.pagerel.addclass('bx-custom-pager');
}else{
linkcontent = i + 1;
slider.pagerel.addclass('bx-default-pager');
}
// var linkcontent = slider.settings.buildpager && $.isfunction(slider.settings.buildpager) ? slider.settings.buildpager(i) : i + 1;
// add the markup to the string
pagerhtml += '';
};
// populate the pager element with pager links
slider.pagerel.html(pagerhtml);
}
/**
* appends the pager to the controls element
*/
var appendpager = function(){
if(!slider.settings.pagercustom){
// create the pager dom element
//slider.pagerel = $(''); //update by jason 20170124
slider.pagerel = $('');
var pagerhtml = '';
var pagerqty = getpagerqty();
// loop through each pager item
for(var i=0; i < pagerqty; i++){
// add the markup to the string
pagerhtml += '';
};
// populate the pager element with pager links
slider.pagerel.html(pagerhtml);
$('#feature-slider').prepend(slider.pagerel);
/*
//update by jason 20170124
// if a pager selector was supplied, populate it with the pager
if(slider.settings.pagerselector){
$(slider.settings.pagerselector).html(slider.pagerel);
// if no pager selector was supplied, add it after the wrapper
}else{
slider.controls.el.addclass('bx-has-pager').append(slider.pagerel);
}
// populate the pager
populatepager();
*/
}else{
slider.pagerel = $(slider.settings.pagercustom);
}
// assign the pager click binding
//slider.pagerel.on('click', 'a', clickpagerbind); //update by jason 20170124
slider.pagerel.on('click', 'li', clickpagerbind);
}
/**
* appends prev / next controls to the controls element
*/
var appendcontrols = function(){
slider.controls.next = $('' + slider.settings.nexttext + '');
slider.controls.prev = $('' + slider.settings.prevtext + '');
// bind click actions to the controls
slider.controls.next.bind('click', clicknextbind);
slider.controls.prev.bind('click', clickprevbind);
// if nextslector was supplied, populate it
if(slider.settings.nextselector){
$(slider.settings.nextselector).append(slider.controls.next);
}
// if prevslector was supplied, populate it
if(slider.settings.prevselector){
$(slider.settings.prevselector).append(slider.controls.prev);
}
// if no custom selectors were supplied
if(!slider.settings.nextselector && !slider.settings.prevselector){
// add the controls to the dom
slider.controls.directionel = $('');
// add the control elements to the directionel
slider.controls.directionel.append(slider.controls.prev).append(slider.controls.next);
// slider.viewport.append(slider.controls.directionel);
slider.controls.el.addclass('bx-has-controls-direction').append(slider.controls.directionel);
}
}
/**
* appends start / stop auto controls to the controls element
*/
var appendcontrolsauto = function(){
slider.controls.start = $('');
slider.controls.stop = $('');
// add the controls to the dom
slider.controls.autoel = $('');
// bind click actions to the controls
slider.controls.autoel.on('click', '.bx-start', clickstartbind);
slider.controls.autoel.on('click', '.bx-stop', clickstopbind);
// if autocontrolscombine, insert only the "start" control
if(slider.settings.autocontrolscombine){
slider.controls.autoel.append(slider.controls.start);
// if autocontrolscombine is false, insert both controls
}else{
slider.controls.autoel.append(slider.controls.start).append(slider.controls.stop);
}
// if auto controls selector was supplied, populate it with the controls
if(slider.settings.autocontrolsselector){
$(slider.settings.autocontrolsselector).html(slider.controls.autoel);
// if auto controls selector was not supplied, add it after the wrapper
}else{
slider.controls.el.addclass('bx-has-controls-auto').append(slider.controls.autoel);
}
// update the auto controls
updateautocontrols(slider.settings.autostart ? 'stop' : 'start');
}
/**
* appends image captions to the dom
*/
var appendcaptions = function(){
// cycle through each child
slider.children.each(function(index){
console.log($(this));
// get the image title attribute
//var title = $(this).find('img:first').attr('title');
// append the caption
// if (title != undefined && ('' + title).length) {
// $(this).append('' + title + '
');
// }
});
}
/**
* click next binding
*
* @param e (event)
* - dom event object
*/
var clicknextbind = function(e){
// if auto show is running, stop it
if (slider.settings.auto) el.stopauto();
el.gotonextslide();
e.preventdefault();
}
/**
* click prev binding
*
* @param e (event)
* - dom event object
*/
var clickprevbind = function(e){
// if auto show is running, stop it
if (slider.settings.auto) el.stopauto();
el.gotoprevslide();
e.preventdefault();
}
/**
* click start binding
*
* @param e (event)
* - dom event object
*/
var clickstartbind = function(e){
el.startauto();
e.preventdefault();
}
/**
* click stop binding
*
* @param e (event)
* - dom event object
*/
var clickstopbind = function(e){
el.stopauto();
e.preventdefault();
}
/**
* click pager binding
*
* @param e (event)
* - dom event object
*/
var clickpagerbind = function(e){
// if auto show is running, stop it
if (slider.settings.auto) el.stopauto();
var pagerlink = $(e.currenttarget);
if(pagerlink.attr('data-slide-index') !== undefined){
var pagerindex = parseint(pagerlink.attr('data-slide-index'));
// if clicked pager link is not active, continue with the gotoslide call
if(pagerindex != slider.active.index) el.gotoslide(pagerindex);
e.preventdefault();
}
}
/**
* updates the pager links with an active class
*
* @param slideindex (int)
* - index of slide to make active
*/
var updatepageractive = function(slideindex){
// if "short" pager type
var len = slider.children.length; // nb of children
if(slider.settings.pagertype == 'short'){
if(slider.settings.maxslides > 1) {
len = math.ceil(slider.children.length/slider.settings.maxslides);
}
slider.pagerel.html( (slideindex + 1) + slider.settings.pagershortseparator + len);
return;
}
// remove all pager active classes
slider.pagerel.find('a').removeclass('active');
// apply the active class for all pagers
slider.pagerel.each(function(i, el) { $(el).find('a').eq(slideindex).addclass('active'); });
}
/**
* performs needed actions after a slide transition
*/
var updateafterslidetransition = function(){
// if infinte loop is true
if(slider.settings.infiniteloop){
var position = '';
// first slide
if(slider.active.index == 0){
// set the new position
position = slider.children.eq(0).position();
// carousel, last slide
}else if(slider.active.index == getpagerqty() - 1 && slider.carousel){
position = slider.children.eq((getpagerqty() - 1) * getmoveby()).position();
// last slide
}else if(slider.active.index == slider.children.length - 1){
position = slider.children.eq(slider.children.length - 1).position();
}
if(position){
if (slider.settings.mode == 'horizontal') { setpositionproperty(-position.left, 'reset', 0); }
else if (slider.settings.mode == 'vertical') { setpositionproperty(-position.top, 'reset', 0); }
}
}
// declare that the transition is complete
slider.working = false;
// onslideafter callback
slider.settings.onslideafter(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
}
/**
* updates the auto controls state (either active, or combined switch)
*
* @param state (string) "start", "stop"
* - the new state of the auto show
*/
var updateautocontrols = function(state){
// if autocontrolscombine is true, replace the current control with the new state
if(slider.settings.autocontrolscombine){
slider.controls.autoel.html(slider.controls[state]);
// if autocontrolscombine is false, apply the "active" class to the appropriate control
}else{
slider.controls.autoel.find('a').removeclass('active');
slider.controls.autoel.find('a:not(.bx-' + state + ')').addclass('active');
}
}
/**
* updates the direction controls (checks if either should be hidden)
*/
var updatedirectioncontrols = function(){
if(getpagerqty() == 1){
slider.controls.prev.addclass('disabled');
slider.controls.next.addclass('disabled');
}else if(!slider.settings.infiniteloop && slider.settings.hidecontrolonend){
// if first slide
if (slider.active.index == 0){
slider.controls.prev.addclass('disabled');
slider.controls.next.removeclass('disabled');
// if last slide
}else if(slider.active.index == getpagerqty() - 1){
slider.controls.next.addclass('disabled');
slider.controls.prev.removeclass('disabled');
// if any slide in the middle
}else{
slider.controls.prev.removeclass('disabled');
slider.controls.next.removeclass('disabled');
}
}
}
/**
* initialzes the auto process
*/
var initauto = function(){
// if autodelay was supplied, launch the auto show using a settimeout() call
if(slider.settings.autodelay > 0){
var timeout = settimeout(el.startauto, slider.settings.autodelay);
// if autodelay was not supplied, start the auto show normally
}else{
el.startauto();
}
// if autohover is requested
if(slider.settings.autohover){
// on el hover
el.hover(function(){
// if the auto show is currently playing (has an active interval)
if(slider.interval){
// stop the auto show and pass true agument which will prevent control update
el.stopauto(true);
// create a new autopaused value which will be used by the relative "mouseout" event
slider.autopaused = true;
}
}, function(){
// if the autopaused value was created be the prior "mouseover" event
if(slider.autopaused){
// start the auto show and pass true agument which will prevent control update
el.startauto(true);
// reset the autopaused value
slider.autopaused = null;
}
});
}
}
/**
* initialzes the ticker process
*/
var initticker = function(){
var startposition = 0;
// if autodirection is "next", append a clone of the entire slider
if(slider.settings.autodirection == 'next'){
el.append(slider.children.clone().addclass('bx-clone'));
// if autodirection is "prev", prepend a clone of the entire slider, and set the left position
}else{
el.prepend(slider.children.clone().addclass('bx-clone'));
var position = slider.children.first().position();
startposition = slider.settings.mode == 'horizontal' ? -position.left : -position.top;
}
setpositionproperty(startposition, 'reset', 0);
// do not allow controls in ticker mode
slider.settings.pager = false;
slider.settings.controls = false;
slider.settings.autocontrols = false;
// if autohover is requested
if(slider.settings.tickerhover && !slider.usingcss){
// on el hover
slider.viewport.hover(function(){
el.stop();
}, function(){
// calculate the total width of children (used to calculate the speed ratio)
var totaldimens = 0;
slider.children.each(function(index){
totaldimens += slider.settings.mode == 'horizontal' ? $(this).outerwidth(true) : $(this).outerheight(true);
});
// calculate the speed ratio (used to determine the new speed to finish the paused animation)
var ratio = slider.settings.speed / totaldimens;
// determine which property to use
var property = slider.settings.mode == 'horizontal' ? 'left' : 'top';
// calculate the new speed
var newspeed = ratio * (totaldimens - (math.abs(parseint(el.css(property)))));
tickerloop(newspeed);
});
}
// start the ticker loop
tickerloop();
}
/**
* runs a continuous loop, news ticker-style
*/
var tickerloop = function(resumespeed){
speed = resumespeed ? resumespeed : slider.settings.speed;
var position = {left: 0, top: 0};
var reset = {left: 0, top: 0};
// if "next" animate left position to last child, then reset left to 0
if(slider.settings.autodirection == 'next'){
position = el.find('.bx-clone').first().position();
// if "prev" animate left position to 0, then reset left to first non-clone child
}else{
reset = slider.children.first().position();
}
var animateproperty = slider.settings.mode == 'horizontal' ? -position.left : -position.top;
var resetvalue = slider.settings.mode == 'horizontal' ? -reset.left : -reset.top;
var params = {resetvalue: resetvalue};
setpositionproperty(animateproperty, 'ticker', speed, params);
}
/**
* initializes touch events
*/
var inittouch = function(){
// initialize object to contain all touch values
slider.touch = {
start: {x: 0, y: 0},
end: {x: 0, y: 0}
}
slider.viewport.bind('touchstart', ontouchstart);
}
/**
* event handler for "touchstart"
*
* @param e (event)
* - dom event object
*/
var ontouchstart = function(e){
if(slider.working){
e.preventdefault();
}else{
// record the original position when touch starts
slider.touch.originalpos = el.position();
var orig = e.originalevent;
// record the starting touch x, y coordinates
slider.touch.start.x = orig.changedtouches[0].pagex;
slider.touch.start.y = orig.changedtouches[0].pagey;
// bind a "touchmove" event to the viewport
slider.viewport.bind('touchmove', ontouchmove);
// bind a "touchend" event to the viewport
slider.viewport.bind('touchend', ontouchend);
}
}
/**
* event handler for "touchmove"
*
* @param e (event)
* - dom event object
*/
var ontouchmove = function(e){
var orig = e.originalevent;
// if scrolling on y axis, do not prevent default
var xmovement = math.abs(orig.changedtouches[0].pagex - slider.touch.start.x);
var ymovement = math.abs(orig.changedtouches[0].pagey - slider.touch.start.y);
// x axis swipe
if((xmovement * 3) > ymovement && slider.settings.preventdefaultswipex){
e.preventdefault();
// y axis swipe
}else if((ymovement * 3) > xmovement && slider.settings.preventdefaultswipey){
e.preventdefault();
}
if(slider.settings.mode != 'fade' && slider.settings.onetoonetouch){
var value = 0;
// if horizontal, drag along x axis
if(slider.settings.mode == 'horizontal'){
var change = orig.changedtouches[0].pagex - slider.touch.start.x;
value = slider.touch.originalpos.left + change;
// if vertical, drag along y axis
}else{
var change = orig.changedtouches[0].pagey - slider.touch.start.y;
value = slider.touch.originalpos.top + change;
}
setpositionproperty(value, 'reset', 0);
}
}
/**
* event handler for "touchend"
*
* @param e (event)
* - dom event object
*/
var ontouchend = function(e){
slider.viewport.unbind('touchmove', ontouchmove);
var orig = e.originalevent;
var value = 0;
// record end x, y positions
slider.touch.end.x = orig.changedtouches[0].pagex;
slider.touch.end.y = orig.changedtouches[0].pagey;
// if fade mode, check if absolute x distance clears the threshold
if(slider.settings.mode == 'fade'){
var distance = math.abs(slider.touch.start.x - slider.touch.end.x);
if(distance >= slider.settings.swipethreshold){
slider.touch.start.x > slider.touch.end.x ? el.gotonextslide() : el.gotoprevslide();
el.stopauto();
}
// not fade mode
}else{
var distance = 0;
// calculate distance and el's animate property
if(slider.settings.mode == 'horizontal'){
distance = slider.touch.end.x - slider.touch.start.x;
value = slider.touch.originalpos.left;
}else{
distance = slider.touch.end.y - slider.touch.start.y;
value = slider.touch.originalpos.top;
}
// if not infinite loop and first / last slide, do not attempt a slide transition
if(!slider.settings.infiniteloop && ((slider.active.index == 0 && distance > 0) || (slider.active.last && distance < 0))){
setpositionproperty(value, 'reset', 200);
}else{
// check if distance clears threshold
if(math.abs(distance) >= slider.settings.swipethreshold){
distance < 0 ? el.gotonextslide() : el.gotoprevslide();
el.stopauto();
}else{
// el.animate(property, 200);
setpositionproperty(value, 'reset', 200);
}
}
}
slider.viewport.unbind('touchend', ontouchend);
}
/**
* window resize event callback
*/
var resizewindow = function(e){
// don't do anything if slider isn't initialized.
if(!slider.initialized) return;
// get the new window dimens (again, thank you ie)
var windowwidthnew = $(window).width();
var windowheightnew = $(window).height();
// make sure that it is a true window resize
// *we must check this because our dinosaur friend ie fires a window resize event when certain dom elements
// are resized. can you just die already?*
if(windowwidth != windowwidthnew || windowheight != windowheightnew){
// set the new window dimens
windowwidth = windowwidthnew;
windowheight = windowheightnew;
// update all dynamic elements
el.redrawslider();
// call user resize handler
slider.settings.onsliderresize.call(el, slider.active.index);
}
}
/**
* ===================================================================================
* = public functions
* ===================================================================================
*/
/**
* performs slide transition to the specified slide
*
* @param slideindex (int)
* - the destination slide's index (zero-based)
*
* @param direction (string)
* - internal use only - the direction of travel ("prev" / "next")
*/
el.gotoslide = function(slideindex, direction){
// if plugin is currently in motion, ignore request
if(slider.working || slider.active.index == slideindex) return;
// declare that plugin is in motion
slider.working = true;
// store the old index
slider.oldindex = slider.active.index;
// if slideindex is less than zero, set active index to last child (this happens during infinite loop)
if(slideindex < 0){
slider.active.index = getpagerqty() - 1;
// if slideindex is greater than children length, set active index to 0 (this happens during infinite loop)
}else if(slideindex >= getpagerqty()){
slider.active.index = 0;
// set active index to requested slide
}else{
slider.active.index = slideindex;
}
// onslidebefore, onslidenext, onslideprev callbacks
slider.settings.onslidebefore(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
if(direction == 'next'){
slider.settings.onslidenext(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
}else if(direction == 'prev'){
slider.settings.onslideprev(slider.children.eq(slider.active.index), slider.oldindex, slider.active.index);
}
// check if last slide
slider.active.last = slider.active.index >= getpagerqty() - 1;
// update the pager with active class
if(slider.settings.pager) updatepageractive(slider.active.index);
// // check for direction control update
if(slider.settings.controls) updatedirectioncontrols();
// if slider is set to mode: "fade"
if(slider.settings.mode == 'fade'){
// if adaptiveheight is true and next height is different from current height, animate to the new height
if(slider.settings.adaptiveheight && slider.viewport.height() != getviewportheight()){
slider.viewport.animate({height: getviewportheight()}, slider.settings.adaptiveheightspeed);
}
// fade out the visible child and reset its z-index value
slider.children.filter(':visible').fadeout(slider.settings.speed).css({zindex: 0});
// fade in the newly requested slide
slider.children.eq(slider.active.index).css('zindex', slider.settings.slidezindex+1).fadein(slider.settings.speed, function(){
$(this).css('zindex', slider.settings.slidezindex);
updateafterslidetransition();
});
// slider mode is not "fade"
}else{
// if adaptiveheight is true and next height is different from current height, animate to the new height
if(slider.settings.adaptiveheight && slider.viewport.height() != getviewportheight()){
slider.viewport.animate({height: getviewportheight()}, slider.settings.adaptiveheightspeed);
}
var moveby = 0;
var position = {left: 0, top: 0};
// if carousel and not infinite loop
if(!slider.settings.infiniteloop && slider.carousel && slider.active.last){
if(slider.settings.mode == 'horizontal'){
// get the last child position
var lastchild = slider.children.eq(slider.children.length - 1);
position = lastchild.position();
// calculate the position of the last slide
moveby = slider.viewport.width() - lastchild.outerwidth();
}else{
// get last showing index position
var lastshowingindex = slider.children.length - slider.settings.minslides;
position = slider.children.eq(lastshowingindex).position();
}
// horizontal carousel, going previous while on first slide (infiniteloop mode)
}else if(slider.carousel && slider.active.last && direction == 'prev'){
// get the last child position
var eq = slider.settings.moveslides == 1 ? slider.settings.maxslides - getmoveby() : ((getpagerqty() - 1) * getmoveby()) - (slider.children.length - slider.settings.maxslides);
var lastchild = el.children('.bx-clone').eq(eq);
position = lastchild.position();
// if infinite loop and "next" is clicked on the last slide
}else if(direction == 'next' && slider.active.index == 0){
// get the last clone position
position = el.find('> .bx-clone').eq(slider.settings.maxslides).position();
slider.active.last = false;
// normal non-zero requests
}else if(slideindex >= 0){
var requestel = slideindex * getmoveby();
position = slider.children.eq(requestel).position();
}
/* if the position doesn't exist
* (e.g. if you destroy the slider on a next click),
* it doesn't throw an error.
*/
if ("undefined" !== typeof(position)) {
var value = slider.settings.mode == 'horizontal' ? -(position.left - moveby) : -position.top;
// plugin values to be animated
setpositionproperty(value, 'slide', slider.settings.speed);
}
}
}
/**
* transitions to the next slide in the show
*/
el.gotonextslide = function(){
// if infiniteloop is false and last page is showing, disregard call
if (!slider.settings.infiniteloop && slider.active.last) return;
var pagerindex = parseint(slider.active.index) + 1;
el.gotoslide(pagerindex, 'next');
}
/**
* transitions to the prev slide in the show
*/
el.gotoprevslide = function(){
// if infiniteloop is false and last page is showing, disregard call
if (!slider.settings.infiniteloop && slider.active.index == 0) return;
var pagerindex = parseint(slider.active.index) - 1;
el.gotoslide(pagerindex, 'prev');
}
/**
* starts the auto show
*
* @param preventcontrolupdate (boolean)
* - if true, auto controls state will not be updated
*/
el.startauto = function(preventcontrolupdate){
// if an interval already exists, disregard call
if(slider.interval) return;
// create an interval
slider.interval = setinterval(function(){
slider.settings.autodirection == 'next' ? el.gotonextslide() : el.gotoprevslide();
}, slider.settings.pause);
// if auto controls are displayed and preventcontrolupdate is not true
if (slider.settings.autocontrols && preventcontrolupdate != true) updateautocontrols('stop');
}
/**
* stops the auto show
*
* @param preventcontrolupdate (boolean)
* - if true, auto controls state will not be updated
*/
el.stopauto = function(preventcontrolupdate){
// if no interval exists, disregard call
if(!slider.interval) return;
// clear the interval
clearinterval(slider.interval);
slider.interval = null;
// if auto controls are displayed and preventcontrolupdate is not true
if (slider.settings.autocontrols && preventcontrolupdate != true) updateautocontrols('start');
}
/**
* returns current slide index (zero-based)
*/
el.getcurrentslide = function(){
return slider.active.index;
}
/**
* returns current slide element
*/
el.getcurrentslideelement = function(){
return slider.children.eq(slider.active.index);
}
/**
* returns number of slides in show
*/
el.getslidecount = function(){
return slider.children.length;
}
/**
* update all dynamic slider elements
*/
el.redrawslider = function(){
// resize all children in ratio to new screen size
slider.children.add(el.find('.bx-clone')).width(getslidewidth());
// adjust the height
slider.viewport.css('height', getviewportheight());
// update the slide position
if(!slider.settings.ticker) setslideposition();
// if active.last was true before the screen resize, we want
// to keep it last no matter what screen size we end on
if (slider.active.last) slider.active.index = getpagerqty() - 1;
// if the active index (page) no longer exists due to the resize, simply set the index as last
if (slider.active.index >= getpagerqty()) slider.active.last = true;
// if a pager is being displayed and a custom pager is not being used, update it
if(slider.settings.pager && !slider.settings.pagercustom){
//populatepager();
updatepageractive(slider.active.index);
}
}
/**
* destroy the current instance of the slider (revert everything back to original state)
*/
el.destroyslider = function(){
// don't do anything if slider has already been destroyed
if(!slider.initialized) return;
slider.initialized = false;
$('.bx-clone', this).remove();
slider.children.each(function() {
$(this).data("origstyle") != undefined ? $(this).attr("style", $(this).data("origstyle")) : $(this).removeattr('style');
});
$(this).data("origstyle") != undefined ? this.attr("style", $(this).data("origstyle")) : $(this).removeattr('style');
$(this).unwrap().unwrap();
if(slider.controls.el) slider.controls.el.remove();
if(slider.controls.next) slider.controls.next.remove();
if(slider.controls.prev) slider.controls.prev.remove();
if(slider.pagerel && slider.settings.controls) slider.pagerel.remove();
$('.bx-caption', this).remove();
if(slider.controls.autoel) slider.controls.autoel.remove();
clearinterval(slider.interval);
if(slider.settings.responsive) $(window).unbind('resize', resizewindow);
}
/**
* reload the slider (revert all dom changes, and re-initialize)
*/
el.reloadslider = function(settings){
if (settings != undefined) options = settings;
el.destroyslider();
init();
}
init();
// returns the current jquery object
return this;
}
})(jquery);