jquery + css 特效 之 一款基于jQuery/CSS3实现拼图效果的相册
栏目：htmlcss时间：2015-02-16 19:51:53
今天我们要来分享1款很酷的jQuery相册插件，首先相册中的图片会以1定的角度倾斜放置在页面上，点击图片缩略图就能够展开图片，并且图片是由所有缩略图拼接而成，图片展开和收拢的动画效果也非常不错。固然图片倾斜需要CSS3支持。效果图以下：
本章主要参照了以下文章进行学习
jquery:http://www.itmmd.com/tag/jquery.html
jQuery教程(31)-jQuery插件开发之全局函数插件
jQuery教程(30)-jQuery插件开发之自定义选择符
jQuery教程(29)-jQuery插件开发之为插件方法指定参数
jQuery教程(28)-jQuery插件开发之使用插件
jQuery教程(27)-jQueryajax操作之修改默许选项
实现的代码。
html代码：
<div id="im_wrapper" class="im_wrapper">
<div style="background-position: 0px 0px;">
<img src="images/thumbs/1.jpg" alt="" /></div>
<div style="background-position: ⑴25px 0px;">
<img src="images/thumbs/2.jpg" alt="" /></div>
<div style="background-position: ⑵50px 0px;">
<img src="images/thumbs/3.jpg" alt="" /></div>
<div style="background-position: ⑶75px 0px;">
<img src="images/thumbs/4.jpg" alt="" /></div>
<div style="background-position: ⑸00px 0px;">
<img src="images/thumbs/5.jpg" alt="" /></div>
<div style="background-position: ⑹25px 0px;">
<img src="images/thumbs/6.jpg" alt="" /></div>
<div style="background-position: 0px ⑴25px;">
<img src="images/thumbs/7.jpg" alt="" /></div>
<div style="background-position: ⑴25px ⑴25px;">
<img src="images/thumbs/8.jpg" alt="" /></div>
<div style="background-position: ⑵50px ⑴25px;">
<img src="images/thumbs/9.jpg" alt="" /></div>
<div style="background-position: ⑶75px ⑴25px;">
<img src="images/thumbs/10.jpg" alt="" /></div>
<div style="background-position: ⑸00px ⑴25px;">
<img src="images/thumbs/11.jpg" alt="" /></div>
<div style="background-position: ⑹25px ⑴25px;">
<img src="images/thumbs/12.jpg" alt="" /></div>
<div style="background-position: 0px ⑵50px;">
<img src="images/thumbs/13.jpg" alt="" /></div>
<div style="background-position: ⑴25px ⑵50px;">
<img src="images/thumbs/14.jpg" alt="" /></div>
<div style="background-position: ⑵50px ⑵50px;">
<img src="images/thumbs/15.jpg" alt="" /></div>
<div style="background-position: ⑶75px ⑵50px;">
<img src="images/thumbs/16.jpg" alt="" /></div>
<div style="background-position: ⑸00px ⑵50px;">
<img src="images/thumbs/17.jpg" alt="" /></div>
<div style="background-position: ⑹25px ⑵50px;">
<img src="images/thumbs/18.jpg" alt="" /></div>
<div style="background-position: 0px ⑶75px;">
<img src="images/thumbs/19.jpg" alt="" /></div>
<div style="background-position: ⑴25px ⑶75px;">
<img src="images/thumbs/20.jpg" alt="" /></div>
<div style="background-position: ⑵50px ⑶75px;">
<img src="images/thumbs/21.jpg" alt="" /></div>
<div style="background-position: ⑶75px ⑶75px;">
<img src="images/thumbs/22.jpg" alt="" /></div>
<div style="background-position: ⑸00px ⑶75px;">
<img src="images/thumbs/23.jpg" alt="" /></div>
<div style="background-position: ⑹25px ⑶75px;">
<img src="images/thumbs/24.jpg" alt="" /></div>
</div>
<div id="im_loading" class="im_loading">
</div>
<div id="im_next" class="im_next">
</div>
<div id="im_prev" class="im_prev">
</div>
<div>
</div>
js代码：
(function ($, sr) {
var debounce = function (func, threshold, execAsap) {
var timeout;
return function debounced() {
var obj = this, args = arguments;
function delayed() {
if (!execAsap)
func.apply(obj, args);
timeout = null;
};
if (timeout)
clearTimeout(timeout);
else if (execAsap)
func.apply(obj, args);
timeout = setTimeout(delayed, threshold || 100);
};
}
//smartresize
jQuery.fn[sr] = function (fn) { return fn ? this.bind('resize', debounce(fn)) : this.trigger(sr); };
})(jQuery, 'smartresize');
</script>
<script type="text/javascript">
$(function () {
//check if the user made the
//mistake to open it with IE
var ie = false;
if ($.browser.msie)
ie = true;
//flag to control the click event
var flg_click = true;
//the wrapper
var $im_wrapper = $('#im_wrapper');
//the thumbs
var $thumbs = $im_wrapper.children('div');
//all the images
var $thumb_imgs = $thumbs.find('img');
//number of images
var nmb_thumbs = $thumbs.length;
//image loading status
var $im_loading = $('#im_loading');
//the next and previous buttons
var $im_next = $('#im_next');
var $im_prev = $('#im_prev');
//number of thumbs per line
var per_line = 6;
//number of thumbs per column
var per_col = Math.ceil(nmb_thumbs / per_line)
//index of the current thumb
var current = ⑴;
//mode = grid | single
var mode = 'grid';
//an array with the positions of the thumbs
//we will use it for the navigation in single mode
var positionsArray = [];
for (var i = 0; i < nmb_thumbs; ++i)
positionsArray[i] = i;
//preload all the images
$im_loading.show();
var loaded = 0;
$thumb_imgs.each(function () {
var $this = $(this);
$('<img/>').load(function () {
++loaded;
if (loaded == nmb_thumbs * 2)
start();
}).attr('src', $this.attr('src'));
$('<img/>').load(function () {
++loaded;
if (loaded == nmb_thumbs * 2)
start();
}).attr('src', $this.attr('src').replace('/thumbs', ''));
});
//starts the animation
function start() {
$im_loading.hide();
//disperse the thumbs in a grid
disperse();
}
//disperses the thumbs in a grid based on windows dimentions
function disperse() {
if (!flg_click) return;
setflag();
mode = 'grid';
//center point for first thumb along the width of the window
var spaces_w = $(window).width() / (per_line + 1);
//center point for first thumb along the height of the window
var spaces_h = $(window).height() / (per_col + 1);
//let's disperse the thumbs equally on the page
$thumbs.each(function (i) {
var $thumb = $(this);
//calculate left and top for each thumb,
//considering how many we want per line
var left = spaces_w * ((i % per_line) + 1) - $thumb.width() / 2;
var top = spaces_h * (Math.ceil((i + 1) / per_line)) - $thumb.height() / 2;
//lets give a random degree to each thumb
var r = Math.floor(Math.random() * 41) - 20;
/*
now we animate the thumb to its final positions;
we also fade in its image, animate it to 115x115,
and remove any background image of the thumb - this
is not relevant for the first time we call disperse,
but when changing from single to grid mode
*/
if (ie)
var param = {
'left': left + 'px',
'top': top + 'px'
};
else
var param = {
'left': left + 'px',
'top': top + 'px',
'rotate': r + 'deg'
};
$thumb.stop()
.animate(param, 700, function () {
if (i == nmb_thumbs - 1)
setflag();
})
.find('img')
.fadeIn(700, function () {
$thumb.css({
'background-image': 'none'
});
$(this).animate({
'width': '115px',
'height': '115px',
'marginTop': '5px',
'marginLeft': '5px'
}, 150);
});
});
}
//controls if we can click on the thumbs or not
//if theres an animation in progress
//we don't want the user to be able to click
function setflag() {
flg_click = !flg_click
}
/*
when we click on a thumb, we want to merge them
and show the full image that was clicked.
we need to animate the thumbs positions in order
to center the final image in the screen. The
image itself is the background image that each thumb
will have (different background positions)
If we are currently seeing the single image,
then we want to disperse the thumbs again,
and with this, showing the thumbs images.
*/
$thumbs.bind('click', function () {
if (!flg_click) return;
setflag();
var $this = $(this);
current = $this.index();
if (mode == 'grid') {
mode = 'single';
//the source of the full image
var image_src = $this.find('img').attr('src').replace('/thumbs', '');
$thumbs.each(function (i) {
var $thumb = $(this);
var $image = $thumb.find('img');
//first we animate the thumb image
//to fill the thumbs dimentions
$image.stop().an
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