Tips and Tricks: carouFredSel

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Some Basics

Init Carousel on Window Ready

The plugin might not be able to measure the correct size of the images onDocumentReady (mostly on Webkit browsers Chrome and Safari). Using $(window).load() eliminate this Problem: 

$(window).load(function(){
   $('#slideshow').carouFredSel();
})

Instead of:

$(function(){
   $('#slideshow').carouFredSel();
})

Therefore you have to set the slideshow-div to "overflow:hidden" to prevent "Flash Of Unstyled Content" (F.O.U.C.)

Using with Bootstrap Grids

Do not convert a Bootstrap Grid-Div or Container-Div into a CarouFredSel-Slider: 


<!-- WILL NOT WORK ! -->
<div class="col-xs-8" id="slideshow">
   <img src="assets/img/1.jpg" width="663" height="491">
   <img src="assets/img/2.jpg" width="663" height="491">
   <img src="assets/img/3.jpg" width="663" height="491">
   <img src="assets/img/4.jpg" width="663" height="491">
</div>

<!-- WILL NOT WORK ! -->
<div class="container" id="slideshow">
   <img src="assets/img/1.jpg" width="663" height="491">
   <img src="assets/img/2.jpg" width="663" height="491">
   <img src="assets/img/3.jpg" width="663" height="491">
   <img src="assets/img/4.jpg" width="663" height="491">
</div>

This will break the Grid Layout or the Container Behaviour. Use instead an own Div for the Slideshow: 

<div class="col-xs-8">
   <div id="slideshow">
      <img src="assets/img/1.jpg" width="663" height="491">
      <img src="assets/img/2.jpg" width="663" height="491">
      <img src="assets/img/3.jpg" width="663" height="491">
      <img src="assets/img/4.jpg" width="663" height="491">
   </div>
</div>

<div class="container">
   <div id="slideshow">
      <img src="assets/img/1.jpg" width="663" height="491">
      <img src="assets/img/2.jpg" width="663" height="491">
      <img src="assets/img/3.jpg" width="663" height="491">
      <img src="assets/img/4.jpg" width="663" height="491">
   </div>
</div>

Sliding Divs

If you want to slide Div's instead images, you should pay attention to the following:

If you do not have a defined height for every slide, you should set "overflow:auto". Otherwise the height could be calculated wrong: 

<div id="slideshow">
    <div style="overflow:auto;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
    <div style="overflow:auto;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
    <div style="overflow:auto;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
</div>

If you do not want to change the height of the slideshow dynamically, you have to set "height: auto" in the carouFredSel-Configuration. In this case you should float the sliding div's. Otherwise multiple div's will be shown vertically: 

<div id="slideshow">
    <div style="float:left;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
    <div style="float:left;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
    <div style="float:left;">
        <h1>Slide</h1>
        <p>Some Text on a Slide.</p>
    </div>
</div>

$(window).load(function(){
   $('#slideshow').carouFredSel({
       items: 1,
       height: "auto"
   });
})

If you do not have a defined width for every slide, you should set the option "responsive: true" in the carouFredSel-Object. Otherwise the width could be calculated wrong: 

$(window).load(function(){
   $('#slideshow').carouFredSel({
       items: 1,
       responsive: true,
   });
})

To my opinion the best effect for sliding div's is "cover-fade": 

$(window).load(function(){
   $('#slideshow').carouFredSel({
       items: 1,
       responsive: true,
       scroll: {
	   fx: "cover-fade"
       }
   });
})

Simple Slider

CONTROLLER: 

$this->master->enable_component('gui-libraries.sliders.carouFredSel');

HTML: 

<div id="slideshow">
   <img src="assets/img/1.jpg" width="663" height="491">
   <img src="assets/img/2.jpg" width="663" height="491">
   <img src="assets/img/3.jpg" width="663" height="491">
   <img src="assets/img/4.jpg" width="663" height="491">
</div>

JS: 

$(window).load(function(){
   $('#slideshow').carouFredSel();
})

Enabling Swiping

You have to enable swiping-support in the component configuration (it's enabled by default): 

$config['master_components']['gui-libraries.sliders.carouFredSel']['config'] = array(
    'swiping' => TRUE
);

Then you have to add the following to your JavaScript: 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	swipe:{
	    onTouch: true
	}
    });
})

You can additionaly enable sliding by dragging with the mouse: 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	swipe:{
	    onTouch: true,
	    onMouse: true
	}
    });
})

Add Previous / Next Buttons

Free Positioning

Add somewhere two div's for the next and the previous button. We use here the builtin icons of Bootstrap. 

<div id="slideshow">
   <img src="assets/img/1.jpg" width="663" height="491">
   <img src="assets/img/2.jpg" width="663" height="491">
   <img src="assets/img/3.jpg" width="663" height="491">
   <img src="assets/img/4.jpg" width="663" height="491">
</div>
<div id="slideshow_next"><span class="glyphicon glyphicon-chevron-right"></span></div>
<div id="slideshow_prev"><span class="glyphicon glyphicon-chevron-left"></span></div>

Tell carouFredSel to use the buttons and not to start automatically. Additionally we enable the use of the keyboard keys "right" and "left": 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	auto: false,
	prev:{
	    button:'#slideshow_prev',
	    key: 'left'
	},
	next:{
	    button:'#slideshow_next',
	    key:'right'
	},
	swipe:{
	    onTouch: true
	}
    });
})

Positioning inside the Slideshow

You have to wrap your slideshow and your buttons into a wrapping div. We use here the builtin icons of Bootstrap. 

<div id="slideshow_wrapper">
   <div id="slideshow">
      <img src="assets/img/1.jpg" width="663" height="491">
      <img src="assets/img/2.jpg" width="663" height="491">
      <img src="assets/img/3.jpg" width="663" height="491">
      <img src="assets/img/4.jpg" width="663" height="491">
   </div>
   <div id="slideshow_next"><span class="glyphicon glyphicon-chevron-right"></span></div>
   <div id="slideshow_prev"><span class="glyphicon glyphicon-chevron-left"></span></div>
</div>

Mixing the wrapper with the Bootstrap grid system is no problem: 

<div class="col-xs-8" id="slideshow_wrapper">

Now positioning and style the buttons with css: 

#slideshow_wrapper {position:relative;}
#slideshow_next {cursor:pointer; position:absolute; top:230px; right:5px; color:black; font-size:31px;}
#slideshow_prev {cursor:pointer; position:absolute; top:230px; color:black; font-size:31px;}

Tell carouFredSel to use the buttons and not to start automatically. Additionally we enable the use of the keyboard keys "right" and "left": 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	auto: false,
	prev:{
	    button:'#slideshow_prev',
	    key: 'left'
	},
	next:{
	    button:'#slideshow_next',
	    key:'right'
	},
	swipe:{
	    onTouch: true
	}
    });
})

Show the Buttons only on Mouse-Over

There are two mthods doing this.

Simply CSS Method

The first and simply one is to add two additionally lines into your css: 

#slideshow_next {cursor:pointer; position:absolute; top:230px; color:white; font-size:31px;}
#slideshow_prev {cursor:pointer; position:absolute; top:230px; right:5px; color:white; font-size:31px;}
#slideshow_wrapper:hover #slideshow_next,
#slideshow_wrapper:hover #slideshow_prev {display: block !important;}

And two additinally lines into your JavaScript: 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	auto: false,
	prev:{
	    button:'#slideshow_prev',
	    key: 'left'
	},
	next:{
	    button:'#slideshow_next',
	    key:'right'
	},
	swipe:{
	    onTouch: true
	}
    });
    $('#slideshow_prev').hide();
    $('#slideshow_next').hide();
})

This is because carouFredSel will always set "display:block" as element style of the buttons.

Fade In and Out

If you want fading the bvuttons, you do not have to add nothing to your css: 

#slideshow_next {cursor:pointer; position:absolute; top:230px; color:white; font-size:31px;}
#slideshow_prev {cursor:pointer; position:absolute; top:230px; right:5px; color:white; font-size:31px;}

But add some more code into your JavaScript: 

$(window).load(function(){
    $('#slideshow').carouFredSel({
	auto: false,
	prev:{
	    button:'#slideshow_prev',
	    key: 'left'
	},
	next:{
	    button:'#slideshow_next',
	    key:'right'
	},
	swipe:{
	    onTouch: true
	}
    });
    $('#slideshow_prev').hide();
    $('#slideshow_next').hide();
    $('#slideshow_wrapper').hover(function(){
	$('#slideshow_prev').fadeIn();
	$('#slideshow_next').fadeIn();
    },function(){
	$('#slideshow_prev').fadeOut();
	$('#slideshow_next').fadeOut();
    })
})

Use Icons for Navigation

First of all you have to set an id for every slide: 

<div id="slideshow">
   <img id="slide1" src="assets/img/1.jpg" width="663" height="491">
   <img id="slide2" src="assets/img/2.jpg" width="663" height="491">
   <img id="slide3" src="assets/img/3.jpg" width="663" height="491">
   <img id="slide4" src="assets/img/4.jpg" width="663" height="491">
</div>

Then you have only set up the links with the icons. The only thing you have to do is setting the class to "caroufredsel" and the href to "#" followed by the id of the slide: 

<a href="#slide1" class="caroufredsel"><img src="assets/img/icon1.jpg" width="162" height="119"></a>
<a href="#slide2" class="caroufredsel"><img src="assets/img/icon2.jpg" width="162" height="119"></a>
<a href="#slide3" class="caroufredsel"><img src="assets/img/icon3.jpg" width="162" height="119"></a>
<a href="#slide4" class="caroufredsel"><img src="assets/img/icon4.jpg" width="162" height="119"></a>
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