content_zoom.js
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jQuery.fn.fancyZoom = function(options){
var options = options || {};
var directory = options && options.directory ? options.directory : 'images';
var zooming = false;
if ($('#zoom').length == 0) {
var html = '<div class="round_shade_box" id="zoom"> \
<div class="round_shade_top"> \
<span class="round_shade_topleft"> \</span> \
<span class="round_shade_topright"> \</span> \
</div> \
<div class="round_shade_centerleft"> \
<div class="round_shade_centerright"> \
<div class="round_shade_center" id="zoom_content"> \</div> \
</div> \
</div> \
<div class="round_shade_bottom"> \
<span class="round_shade_bottomleft"> \</span> \
<span class="round_shade_bottomright"> \</span> \
</div> \
<a href="#close" class="round_box_close" id="zoom_close">关闭</a> \
</div>';
$('body').append(html);
$('html').click(function(e){if($(e.target).parents('#zoom:visible').length == 0) hide();});
$(document).keyup(function(event){
if (event.keyCode == 27 && $('#zoom:visible').length > 0) hide();
});
$('#zoom_close').click(hide);
}
var zoom = $('#zoom');
var zoom_close = $('#zoom_close');
var zoom_content = $('#zoom_content');
this.each(function(i) {
$($(this).attr('href')).hide();
$(this).click(show);
});
$('#zoom_close').click(hide);
return this;
function show(e) {
if (zooming) return false;
zooming = true;
var content_div = $($(this).attr('href'));
var zoom_width = options.width;
var zoom_height = options.height;
var width = window.innerWidth || (window.document.documentElement.clientWidth || window.document.body.clientWidth);
var height = window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight);
var x = window.pageXOffset || (window.document.documentElement.scrollLeft || window.document.body.scrollLeft);
var y = window.pageYOffset || (window.document.documentElement.scrollTop || window.document.body.scrollTop);
var window_size = {'width':width, 'height':height, 'x':x, 'y':y}
var width = (zoom_width || content_div.width()) + 40;
var height = (zoom_height || content_div.height()) + 40;
var d = window_size;
// ensure that newTop is at least 0 so it doesn't hide close button
var newTop = Math.max((d.height/2) - (height/2) + y, 0);
var newLeft = (d.width/2) - (width/2);
var curTop = e.pageY;
var curLeft = e.pageX;
zoom_close.attr('curTop', curTop);
zoom_close.attr('curLeft', curLeft);
zoom_close.attr('scaleImg', options.scaleImg ? 'true' : 'false');
$('#zoom').hide().css({
position : 'absolute',
top : curTop + 'px',
left : curLeft + 'px',
width : '1px',
height : '1px'
});
zoom_close.hide();
if (options.closeOnClick) {
$('#zoom').click(hide);
}
if (options.scaleImg) {
zoom_content.html(content_div.html());
$('#zoom_content img').css('width', '100%');
} else {
zoom_content.html('');
}
$('#zoom').animate({
top : newTop + 'px',
left : newLeft + 'px',
opacity : "show",
width : width,
height : height
}, 500, null, function() {
if (options.scaleImg != true) {
zoom_content.html(content_div.html());
}
zoom_close.show();
zooming = false;
})
return false;
}
function hide() {
if (zooming) return false;
zooming = true;
$('#zoom').unbind('click');
if (zoom_close.attr('scaleImg') != 'true') {
zoom_content.html('');
}
zoom_close.hide();
$('#zoom').animate({
top : zoom_close.attr('curTop') + 'px',
left : zoom_close.attr('curLeft') + 'px',
opacity : "hide",
width : '1px',
height : '1px'
}, 500, null, function() {
if (zoom_close.attr('scaleImg') == 'true') {
zoom_content.html('');
}
zooming = false;
});
return false;
}
}