Gallery Next/prev specific to div content
I'm a complete noob to JQUERY, learning things slowly. But I have been downloaded an existing jquery fullscreen gallery, although it works great for a single div , if I wanted to have several divs with different thumbs, the gallery breaks (next/prev tracks all items in all divs called "content").
Here is the jquery code:
// SLIDE PANEL GALLERY
$(function() {
/* this is the index of the last clicked picture */
var current = -1;
/* number of pictures */
var totalpictures = $('.content img').size();
/* speed to animate the panel and the thumbs wrapper */
var speed = 500;
/* show the content */
$('.content').show();
/*
when the user resizes the browser window,
the size of the picture being viewed is recalculated;
*/
$(window).bind('resize', function() {
var $picture = $('#wrapper').find('img');
resize($picture);
});
/*
when hovering a thumb, animate it's opacity
for a cool effect;
when clicking on it, we load the corresponding large image;
the source of the large image is stored as
the "alt" attribute of the thumb image
*/
$('.content > img').hover(function () {
var $this = $(this);
$this.stop().animate({'opacity':'1.0'},200);
},function () {
var $this = $(this);
$this.stop().animate({'opacity':'0.4'},200);
}).bind('click',function(){
var $this = $(this);
/* shows the loading icon */
$('#loading').show();
$('<img/>').load(function(){
$('#loading').hide();
if($('#wrapper').find('img').length) return;
current = $this.index();
var $theImage = $(this);
/*
After it's loaded we hide the loading icon
and resize the image, given the window size;
then we append the image to the wrapper
*/
resize($theImage);
$('#wrapper').append($theImage);
/* make its opacity animate */
$theImage.fadeIn(800);
/* and finally slide up the panel */
$('#panel').animate({'height':'100%'},speed,function(){
/*
if the picture has a description,
it's stored in the title attribute of the thumb;
show it if it's not empty
*/
var title = $this.attr('title');
if(title != '')
$('#description').html(title).show();
else
$('#description').empty().hide();
/*
if our picture is the first one,
don't show the "previous button"
for the slideshow navigation;
if our picture is the last one,
don't show the "next button"
for the slideshow navigation
*/
if(current==0)
$('#prev').hide();
else
$('#prev').fadeIn();
if(current==parseInt(totalpictures-1))
$('#next').hide();
else
$('#next').fadeIn();
/*
we set the z-index and height of the thumbs wrapper
to 0, because we want to slide it up afterwards,
when the user clicks the large image
*/
$('#thumbsWrapper').css({'z-index':'0','height':'0px'});
});
}).attr('src', $this.attr('alt'));
});
/*
when hovering a large image,
we want to slide up the thumbs wrapper again,
and reset the panel (like it was initially);
this includes removing the large image element
*/
$('#wrapper > img').live('click',function(){
$this = $(this);
$('#description').empty().hide();
$('#thumbsWrapper').css('z-index','10')
.stop()
.animate({'height':'100%'},speed,function(){
var $theWrapper = $(this);
$('#panel').css('height','0px');
$theWrapper.css('z-index','0');
/*
remove the large image element
and the navigation buttons
*/
$this.remove();
$('#prev').hide();
$('#next').hide();
});
});
/*
when we are viewing a large image,
if we navigate to the right/left we need to know
which image is the corresponding neighbour.
we know the index of the current picture (current),
so we can easily get to the neighbour:
*/
$('#next').bind('click',function(){
var $this = $(this);
var $nextimage = $('.content img:nth-child('+parseInt(current+2)+')');
navigate($nextimage,'right');
});
$('#prev').bind('click',function(){
var $this = $(this);
var $previmage = $('.content img:nth-child('+parseInt(current)+')');
navigate($previmage,'left');
});
/*
given the next or previous image to show,
and the direction, it loads a new image in the panel.
*/
function navigate($nextimage,dir){
/*
if we are at the end/beginning
then there's no next/previous
*/
if(dir=='left' && current==0)
return;
if(dir=='right' && current==parseInt(totalpictures-1))
return;
$('#loading').show();
$('<img/>').load(function(){
var $theImage = $(this);
$('#loading').hide();
$('#description').empty().fadeOut();
$('#wrapper img').stop().fadeOut(500,function(){
var $this = $(this);
$this.remove();
resize($theImage);
$('#wrapper').append($theImage.show());
$theImage.stop().fadeIn(800);
var title = $nextimage.attr('title');
if(title != ''){
$('#description').html(title).show();
}
else
$('#description').empty().hide();
if(current==0)
$('#prev').hide();
else
$('#prev').show();
if(current==parseInt(totalpictures-1))
$('#next').hide();
else
$('#next').show();
});
/*
increase or decrease the current variable
*/
if(dir=='right')
++current;
else if(dir=='left')
--current;
}).attr('src', $nextimage.attr('alt'));
}
/*
resizes an image given the window size,
considering the margin values
*/
function resize($image){
var windowH = $(window).height()-150;
var windowW = $(window).width()-80;
var theImage = new Image();
theImage.src = $image.attr("src");
var imgwidth = theImage.width;
var imgheight = theImage.height;
if((imgwidth > windowW)||(imgheight > windowH)){
if(imgwidth > imgheight){
var newwidth = windowW;
var ratio = imgwidth / windowW;
var newheight = imgheight / ratio;
theImage.height = newheight;
theImage.width= newwidth;
if(newheight>windowH){
var newnewheight = windowH;
var newratio = newheight/windowH;
var newnewwidth =newwidth/newratio;
theImage.width = newnewwidth;
theImage.height= newnewheight;
}
}
else{
var newheight = windowH;
var ratio = imgheight / windowH;
var newwidth = imgwidth / ratio;
theImage.height = newheight;
theImage.width= newwidth;
if(newwidth>windowW){
var newnewwidth = windowW;
var newratio = newwidth/windowW;
var newnewheight =newheight/newratio;
theImage.height = newnewheight;
theImage.width= newnewwidth;
}
}
}
$image.css({'width':theImage.width+'px','height':theImage.height+'px'});
}
});
How do I modify the code to allow me to hav开发者_开发知识库e multiple content divs and the next/prev only correspond to that content div (parent div?) and not to others on the page?
If anybody could help, it would be greatly appreciated. Happy to provide the css/html.
Edit: I hope this one works! http://jsbin.com/uwafi6/5
I've done it for you, here: http://jsbin.com/uwafi6/4
Change the first line to:
jQuery.fn.createGallery = function() {
You'll have to change all instances of #next and #prev to classes, .next and .prev
You'll also need to add var gallery = this; somewhere near the start so you can use:
gallery.find('.next') and gallery.find('.prev') wherever there's $('#next') or $('#prev')
You'll need to change any other id's to classes with the same method.
You can then use $('#myFirstGallery').createGallery(); to create an instance of the gallery.
You'll find a lot more info here: http://docs.jquery.com/Tutorials:Getting_Started_with_jQuery#Plug_me:_Writing_your_own_plugins
加载中,请稍侯......
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