/*详情页图片放大镜*/
(function ($) {
$.fn.imagezoom = function (options) {
var settings = {
xzoom: 210,
yzoom: 140,
offset: 10,
position: "btr",
preload: 1
};
if (options) {
$.extend(settings, options);
}
var noalt = '';
var self = this;
$(this).bind("mouseenter", function (ev) {
var imageleft = $(this).offset().left; //元素左边距
var imagetop = $(this).offset().top; //元素顶边距
var imagewidth = $(this).get(0).offsetwidth; //图片宽度
var imageheight = $(this).get(0).offsetheight; //图片高度
var boxleft = $(this).parent().offset().left; //父框左边距
var boxtop = $(this).parent().offset().top; //父框顶边距
var boxwidth = $(this).parent().width(); //父框宽度
var boxheight = $(this).parent().height(); //父框高度
noalt = $(this).attr("alt"); //图片标题
var bigimage = $(this).attr("rel"); //大图地址
$(this).attr("alt", ''); //清空图片alt
if ($("div.zoomdiv").get().length == 0) {
$(document.body).append("
"); //放大镜框及遮罩
}
if (settings.position == "btr") {
//如果超过了屏幕宽度 将放大镜放在右边
if (boxleft + boxwidth + settings.offset + settings.xzoom > screen.width) {
leftpos = boxleft - settings.offset - settings.xzoom;
} else {
leftpos = boxleft + boxwidth + settings.offset;
}
} else {
leftpos = imageleft - settings.xzoom - settings.offset;
if (leftpos < 0) {
leftpos = imageleft + imagewidth + settings.offset;
}
}
$("div.zoomdiv").css({ top: boxtop, left: leftpos });
$("div.zoomdiv").width(settings.xzoom);
$("div.zoomdiv").height(settings.yzoom);
$("div.zoomdiv").show();
$(this).css('cursor', 'crosshair');
$(document.body).mousemove(function (e) {
mouse = new mouseevent(e);
if (mouse.x < imageleft || mouse.x > imageleft + imagewidth || mouse.y < imagetop || mouse.y > imagetop + imageheight) {
mouseoutimage();
return;
}
var bigwidth = $(".bigimg").get(0).offsetwidth;
var bigheight = $(".bigimg").get(0).offsetheight;
var scaley = 'x';
var scalex = 'y';
//设置遮罩层尺寸
if (isnan(scalex) | isnan(scaley)) {
var scalex = (bigwidth / imagewidth);
var scaley = (bigheight / imageheight);
$("div.zoommask").width((settings.xzoom) / scalex);
$("div.zoommask").height((settings.yzoom) / scaley);
$("div.zoommask").css('visibility', 'visible');
}
xpos = mouse.x - $("div.zoommask").width() / 2;
ypos = mouse.y - $("div.zoommask").height() / 2;
xposs = mouse.x - $("div.zoommask").width() / 2 - imageleft;
yposs = mouse.y - $("div.zoommask").height() / 2 - imagetop;
xpos = (mouse.x - $("div.zoommask").width() / 2 < imageleft) ? imageleft : (mouse.x + $("div.zoommask").width() / 2 > imagewidth + imageleft) ? (imagewidth + imageleft - $("div.zoommask").width()) : xpos;
ypos = (mouse.y - $("div.zoommask").height() / 2 < imagetop) ? imagetop : (mouse.y + $("div.zoommask").height() / 2 > imageheight + imagetop) ? (imageheight + imagetop - $("div.zoommask").height()) : ypos;
$("div.zoommask").css({ top: ypos, left: xpos });
$("div.zoomdiv").get(0).scrollleft = xposs * scalex;
$("div.zoomdiv").get(0).scrolltop = yposs * scaley;
});
});
function mouseoutimage() {
$(self).attr("alt", noalt);
$(document.body).unbind("mousemove");
$("div.zoommask").remove();
$("div.zoomdiv").remove();
}
//预加载
count = 0;
if (settings.preload) {
$('body').append("");
$(this).each(function () {
var imagetopreload = $(this).attr("rel");
var content = jquery('div.jqpreload' + count + '').html();
jquery('div.jqpreload' + count + '').html(content + '
');
});
}
}
})(jquery);
function mouseevent(e) {
this.x = e.pagex;
this.y = e.pagey;
}
//以下代码实现小图左右的移动效果
ph$ = {
bindevt : function() {
var o = {};
o.btn_sell_l = $("#pageleft");
if (o.btn_sell_l.length > 0) {
o.btn_sell_l.bind("click", function() {
ph$.scrolllvesell('right');
});
}
o.btn_sell_r = $("#pageright");
if (o.btn_sell_r.length > 0) {
o.btn_sell_r.bind("click", function() {
ph$.scrolllvesell('left');
});
}
},
scrolllvesell : function(o) {
if (this.cfg.lv_flag == 0)
return false;
var tar = $("#sell_order");
var tar2 = $("#sell_order_t");
tar.stop();
tar2.stop();
var max_num = $("#sell_order>li").length;
var width = 128; //每次移动的大小,包含内边距和外边距
var left = 0;
var pos = tar.position();
//alert(pos.left + "|" + width);
if (o == "left") {
if (math.abs(pos.left)+width > width*(max_num-3)) {
return false;
}
left = pos.left - width;
} else if (o == "right") {
if (pos.left >= 0) {
return false;
}
left = pos.left + width;
}
left = left + "px";
//alert(left);
ph$.cfg.lv_flag = 0;
tar.animate({
left: left
}, 330);
tar2.animate({
left: left
}, 330, function() {
ph$.cfg.lv_flag = 1;
//alert(pos.left);
});
},
cfg : {
},
init : function() {
this.bindevt();
}
};
$(function($) {
ph$.init();
//****点击小图展示大图和内容 begin***
//小于4时不显示左右的箭头
var num=$("#sell_order li").length
if(num<4){
$("#pageleft").css("display","none")
$("#pageright").css("display","none")
}
else{
$("#pageleft").css("display","block")
$("#pageright").css("display","block")
}
var firstbig=$(".sell_order li:first img").attr("datasrc");
var firstsmall=$(".sell_order li:first img").attr("rel");
$(".big_pic img").attr("src",firstbig)
$(".small_pic img").attr("src",firstsmall)
$(".sell_order li:first").addclass("hover")
$(".sell_order li").hover(function(){
var imgbig=$(this).find("img").attr("big");
var imgsmall=$(this).find("img").attr("mid")
$(".bigpic img").attr("rel",imgbig)
$(".bigpic img").attr("src",imgsmall)
$(".sell_order li").removeclass("hover")
$(this).addclass("hover")
var bigpicurl=$(this).find("img").attr("big")
$("#chakan").attr("href",bigpicurl)
});
//****点击小图展示大图和内容 end***
});
$(function($) {
var bigpicurl=$(".sell_order li[class='hover']").find("img").attr("big")
$("#chakan").attr("href",bigpicurl)
$(".jqzoom").imagezoom();
})