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(function($) {
$.fn.jqueryzoom = function(options) {
var settings = {
xzoom: 200, //zoomed width default width
yzoom: 200, //zoomed div default width
offset: 10, //zoomed div default offset
position: "right" //zoomed div default position,offset position is to the right of the image
};
if(options)
$.extend(settings, options);
var noalt ='';
$(this).hover(function() {
var imageRelativeLeft = $(this).get(0).offsetLeft;
var imageLeft = $($(this).get(0)).offset().left;
var imageRelativeTop = $(this).get(0).offsetTop;
var imageTop = $($(this).get(0)).offset().top;
var imageWidth = $(this).get(0).offsetWidth;
var imageHeight = $(this).get(0).offsetHeight;
attr = typeof($(this).attr("rel")) != 'undefined' ? "rel" : "alt";
noalt = $(this).attr(attr);
var bigimage = noalt;
$(this).attr(attr, '');
if($("div.zoomdiv").get().length == 0)
$(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
if(settings.position == "right")
leftpos = imageRelativeLeft + imageWidth + settings.offset;
else
leftpos = imageRelativeLeft - settings.xzoom - settings.offset;
$("div.zoomdiv").css({top: imageRelativeTop,left: leftpos});
$("div.zoomdiv").width(settings.xzoom);
$("div.zoomdiv").height(settings.yzoom);
$("div.zoomdiv").show();
$(document.body).mousemove(function(e) {
var bigwidth = $(".bigimg").get(0).offsetWidth;
var bigheight = $(".bigimg").get(0).offsetHeight;
var scaley ='x';
var scalex= 'y';
if(isNaN(scalex)|isNaN(scaley)) {
var scalex = Math.round(bigwidth/imageWidth) ;
var scaley = Math.round(bigheight/imageHeight);
}
mouse = new MouseEvent(e);
scrolly = mouse.y - imageTop - ($("div.zoomdiv").height()*1/scaley)/3 ;
$("div.zoomdiv").get(0).scrollTop = scrolly * scaley ;
scrollx = mouse.x - imageLeft - ($("div.zoomdiv").width()*1/scalex)/3 ;
$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;
});
}, function() {
$(this).attr(attr, noalt);
$("div.zoomdiv").hide();
$(document.body).unbind("mousemove");
$(".lenszoom").remove();
$("div.zoomdiv").remove();
});
} |
