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Fixes #347 - Carousel refinement (pt. 2)
Carousel refinement in part with repo of oregon-digital-set-content
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David McCallum
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Aug 22, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| /* | ||
| * jQuery Blueberry Slider v0.4 BETA | ||
| * http://marktyrrell.com/labs/blueberry/ | ||
| * | ||
| * Copyright (C) 2011, Mark Tyrrell <me@marktyrrell.com> | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
|
|
||
| (function($){ | ||
| $.fn.extend({ | ||
| blueberry: function(options) { | ||
|
|
||
| //default values for plugin options | ||
| var defaults = { | ||
| interval: 5000, | ||
| duration: 500, | ||
| lineheight: 1, | ||
| height: 'auto', //reserved | ||
| hoverpause: false, | ||
| pager: true, | ||
| nav: true, //reserved | ||
| keynav: true | ||
| } | ||
| var options = $.extend(defaults, options); | ||
|
|
||
| return this.each(function() { | ||
| var o = options; | ||
| var obj = $(this); | ||
|
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| //store the slide and pager li | ||
| var slides = $('.slides li', obj); | ||
| var pager = $('.pager li', obj); | ||
|
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| //set initial current and next slide index values | ||
| var current = 0; | ||
| var next = current+1; | ||
|
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| //get height and width of initial slide image and calculate size ratio | ||
| var imgHeight = slides.eq(current).find('img').height(); | ||
| var imgWidth = slides.eq(current).find('img').width(); | ||
| var imgRatio = imgWidth/imgHeight; | ||
|
|
||
| //define vars for setsize function | ||
| var sliderWidth = 0; | ||
| var cropHeight = 0; | ||
|
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| //hide all slides, fade in the first, add active class to first slide | ||
| slides.hide().eq(current).fadeIn(o.duration).addClass('active'); | ||
|
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|
|
||
| //build pager if it doesn't already exist and if enabled | ||
| if(pager.length) { | ||
| pager.eq(current).addClass('active'); | ||
| } else if(o.pager){ | ||
| obj.append('<ul class="pager"></ul>'); | ||
| slides.each(function(index) { | ||
| $('.pager', obj).append('<li><a href="#"><span>'+index+'</span></a></li>') | ||
| }); | ||
| pager = $('.pager li', obj); | ||
| pager.eq(current).addClass('active'); | ||
| } | ||
|
|
||
| //rotate to selected slide on pager click | ||
| if(pager){ | ||
| $('a', pager).click(function() { | ||
| //stop the timer | ||
| clearTimeout(obj.play); | ||
| //set the slide index based on pager index | ||
| next = $(this).parent().index(); | ||
| //rotate the slides | ||
| rotate(); | ||
| return false; | ||
| }); | ||
| } | ||
|
|
||
| //primary function to change slides | ||
| var rotate = function(){ | ||
| //fade out current slide and remove active class, | ||
| //fade in next slide and add active class | ||
| slides.eq(current).fadeOut(o.duration).removeClass('active') | ||
| .end().eq(next).fadeIn(o.duration).addClass('active').queue(function(){ | ||
| //add rotateTimer function to end of animation queue | ||
| //this prevents animation buildup caused by requestAnimationFrame | ||
| //rotateTimer starts a timer for the next rotate | ||
| rotateTimer(); | ||
| $(this).dequeue() | ||
| }); | ||
|
|
||
| //update pager to reflect slide change | ||
| if(pager){ | ||
| pager.eq(current).removeClass('active') | ||
| .end().eq(next).addClass('active'); | ||
| } | ||
|
|
||
| //update current and next vars to reflect slide change | ||
| //set next as first slide if current is the last | ||
| current = next; | ||
| next = current >= slides.length-1 ? 0 : current+1; | ||
| }; | ||
| //create a timer to control slide rotation interval | ||
| var rotateTimer = function(){ | ||
| obj.play = setTimeout(function(){ | ||
| //trigger slide rotate function at end of timer | ||
| rotate(); | ||
| clearTimeout(obj.play); | ||
| }, o.interval); | ||
| }; | ||
| //start the timer for the first time | ||
| rotateTimer(); | ||
|
|
||
| //pause the slider on hover | ||
| //disabled by default due to bug | ||
| if(o.hoverpause){ | ||
| slides.hover(function(){ | ||
| //stop the timer in mousein | ||
| clearTimeout(obj.play); | ||
| }, function(){ | ||
| //start the timer on mouseout | ||
| rotateTimer(); | ||
| }); | ||
| } | ||
|
|
||
| //calculate and set height based on image width/height ratio and specified line height | ||
| var setsize = function(){ | ||
| sliderWidth = $('.slides', obj).width(); | ||
| cropHeight = Math.floor(((sliderWidth/imgRatio)/o.lineheight))*o.lineheight; | ||
|
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| $('.slides', obj).css({height: cropHeight}); | ||
| }; | ||
| setsize(); | ||
|
|
||
| //bind setsize function to window resize event | ||
| $(window).resize(function(){ | ||
| setsize(); | ||
| }); | ||
|
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|
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|
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| //Add keyboard navigation | ||
|
|
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| if(o.keynav){ | ||
| $(document).keyup(function(e){ | ||
|
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| switch (e.which) { | ||
|
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| case 39: case 32: //right arrow & space | ||
|
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| clearTimeout(obj.play); | ||
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| rotate(); | ||
|
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| break; | ||
|
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| case 37: // left arrow | ||
| clearTimeout(obj.play); | ||
| next = current - 1; | ||
| rotate(); | ||
|
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| break; | ||
| } | ||
|
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| }); | ||
| } | ||
|
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| }); | ||
| } | ||
| }); | ||
| })(jQuery); |