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|
/**
* 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
*
* 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: false,
slideZIndex: 50,
wrapperClass: 'bx-wrapper',
// TOUCH
touchEnabled: true,
swipeThreshold: 50,
oneToOneTouch: true,
preventDefaultSwipeX: true,
preventDefaultSwipeY: false,
// PAGER
pager: false,
pagerType: 'full',
pagerShortSeparator: ' / ',
pagerSelector: null,
buildPager: null,
pagerCustom: null,
// CONTROLS
controls: false,
nextText: 'Next',
prevText: 'Prev',
nextSelector: null,
prevSelector: null,
autoControls: false,
startText: 'Start',
stopText: 'Stop',
autoControlsCombine: false,
autoControlsSelector: null,
// AUTO
auto: true,
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() {},
}
$.fn.bxSlider = function(options){
if(this.length == 0) return this;
// support mutltiple elements
if(this.length > 1){
this.each(function(){$(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('<div class="' + slider.settings.wrapperClass + '"><div class="bx-viewport"></div></div>');
// store a namspace reference to .bx-viewport
slider.viewport = el.parent();
// add a loading div to display while images are loading
slider.loader = $('<div class="bx-loading" />');
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 = $('<div class="bx-controls" />');
// 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 += '<div class="bx-pager-item"><a href="" data-slide-index="' + i + '" class="bx-pager-link">' + linkContent + '</a></div>';
};
// 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 = $('<div class="bx-pager" />');
// 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);
}
/**
* Appends prev / next controls to the controls element
*/
var appendControls = function(){
slider.controls.next = $('<a class="bx-next" href="">' + slider.settings.nextText + '</a>');
slider.controls.prev = $('<a class="bx-prev" href="">' + slider.settings.prevText + '</a>');
// 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 = $('<div class="bx-controls-direction" />');
// 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 = $('<div class="bx-controls-auto-item"><a class="bx-start" href="">' + slider.settings.startText + '</a></div>');
slider.controls.stop = $('<div class="bx-controls-auto-item"><a class="bx-stop" href="">' + slider.settings.stopText + '</a></div>');
// add the controls to the DOM
slider.controls.autoEl = $('<div class="bx-controls-auto" />');
// 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){
// get the image title attribute
var title = $(this).find('img:first').attr('title');
// append the caption
if (title != undefined && ('' + title).length) {
$(this).append('<div class="bx-caption"><span>' + title + '</span></div>');
}
});
}
/**
* 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); |
Centrage vertical sur diaporama bxslider
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, mais je crois que je vais paraître pour le lourd de service. J'ai testé et ça marche pas, je l'ai mis dans ma page css mais il ne se passe rien.
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