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lpsshowlayer.js
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lpsshowlayer.js
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(function ($) {
$.fn.lpsShowLayer = function (obj) {
/***author:刘丕水
date:2014/10/9 星期四
使用方法：$(doc).showLpsLayer({
});
***/
var obj=$.extend({
address:$(this).attr("src"),//默认为$(this)的src地址
closeBtnStyle:"",//可通过样式display来控制标题和关闭按钮的显示隐藏
closeLayer:false,//默认0，不关闭遮罩层
layerPadding:"60px",//默认为60px不支持百分比
stretch:false,//默认false,不拉伸图片;只有type为img的情况下有效
title:$(this).attr("alt"),//默认为$(this)的alt
titleStyle:"",//可通过样式display来控制标题和关闭按钮的显示隐藏
layerBoxStyle:"box-shadow:0 4px 16px #000;",//layerbox的样式,默认有阴影,可自定义
layerCoverStyle:"",//可通过样式display来控制遮罩层半透明背景的显示隐藏，默认显示
type:"img",//默认为img
show:function(){},//function(data){data.close()}；data为{close:closeLpsLayers}
html:"",//自定义内部html代码，默认为空
drag:false,//是否支持拖拽
resize:false//是否支持改变大小
},obj);
/***添加DOM元素开始***/
var layerNum="";
var rootId="LpsLayer";//ID如果重复直接换此ID;
for(var layerNum;$("#LpsLayer"+layerNum).length>0;layerNum++){}
$("body").append("<div style='width: 100%; height: 100%; position: absolute; background: none; top: 0; left: 0; z-index: 9999;' id='"+rootId+layerNum+"'><div id='"+rootId+"Con"+layerNum+"' style='position: relative;height:100%;'><div id='"+rootId+"Title"+layerNum+"' style='overflow: hidden; background: #eee; height: 30px; line-height: 30px;width: 100%;'><span style='padding:0 26px 0 10px;display:block;'>"+(obj.title?obj.title:"")+"</span></div><span style='border: 1px solid #ccc; background: #fff; font-family: Microsoft Yahei; position: absolute; top: 4px; right: 4px; width: 20px; height: 20px; line-height: 20px; text-align: center; cursor: pointer;' id='"+rootId+"Close"+layerNum+"'>X</span><div id='"+rootId+"ConInner"+layerNum+"' style='overflow:hidden;background:#fff;'></div><i id='"+rootId+"resizebtn"+layerNum+"' style='display:none;position:absolute;right:0;bottom:0;height:0;line-height:1px;border-bottom:12px solid #000;border-left:12px solid transparent;_border-left-color:#fff;z-index:10;cursor:nw-resize;'></i></div></div><div style='position: absolute; z-index: 999; background: #ccc; opacity: 0.6; filter: alpha(opacity=60); top: 0; left: 0; width: 100%; height: 100%;' id='"+rootId+"Cover"+layerNum+"'></div>");
(obj.type == "img") ? $("#"+rootId+"ConInner"+layerNum).html("<img style='display:block;margin:0 auto;height:100%;' src='"+obj.address+"'/>") : $("#"+rootId+"ConInner"+layerNum).html("<iframe style='width:100%;height:100%;' frameBorder='0' src='"+obj.address+"'></iframe>");
/***添加DOM元素结束***/
/***获取须操作jquery dom对象***/
var myObj={
html :$("html"),
body :function(){return this.html.find("body")},
btnclose :function(){return this.html.find("#"+rootId+"Close"+layerNum)},
// content :function(){var that=this;return that.html.find("#"+rootId+"Con"+layerNum)},
contentinner :function(){return this.html.find("#"+rootId+"ConInner"+layerNum)},
iframe :function(){return this.contentinner().find("iframe")},
img :function(){return this.contentinner().find("img")},
layer :function(){return this.html.find("#"+rootId+layerNum)},
layercover :function(){return this.html.find("#"+rootId+"Cover"+layerNum)},
title :function(){return this.html.find("#"+rootId+"Title"+layerNum)},
// titletext :function(){var that=this;return that.title().find("span")},
resizebtn :function(){return this.html.find("#"+rootId+"resizebtn"+layerNum)},
win :$(window)
};
//添加标题样式
if(obj.titleStyle){myObj.title()[0].style.cssText += ";"+obj.titleStyle};
//添加关闭按钮样式
if(obj.closeBtnStyle){myObj.btnclose()[0].style.cssText += ";"+obj.closeBtnStyle};
//添加背景遮罩层样式
if(obj.layerCoverStyle){myObj.layercover()[0].style.cssText += ";"+obj.layerCoverStyle};
//添加layerBox样式
if(obj.layerBoxStyle){myObj.layer()[0].style.cssText += ";"+obj.layerBoxStyle};
///显示遮罩层函数
var lpsLayerShow = function () {
myObj.html.css("overflow", "hidden");
myObj.body().css("overflow", "hidden");
var layerStyleSize=function(){
var topN = myObj.win.scrollTop();
var leftN = myObj.win.scrollLeft();
myObj.layercover().css({"top":topN,"height":myObj.win.height()});
myObj.layer().css({"overflow":"hidden","top":topN+parseInt(obj.layerPadding),"left":leftN+parseInt(obj.layerPadding),"width":myObj.win.width()-parseInt(obj.layerPadding)*2,"height":(myObj.win.height()-parseInt(obj.layerPadding)*2)});
myObj.contentinner().height(myObj.win.height()-parseInt(obj.layerPadding)*2 - myObj.title().innerHeight());
}
layerStyleSize();
myObj.win.resize(function () {layerStyleSize();});
if (obj.type == "img" && !obj.stretch) {
var imgLocation=function () {
var conRate = myObj.contentinner().width()/myObj.contentinner().height()*1;
var imgRate = parseInt(myObj.img().width())/parseInt(myObj.img().height());
conRate / imgRate > 1 ? myObj.img().css({ "width": "", "height":myObj.contentinner().height() }) : myObj.img().css({ "width": myObj.contentinner().width(), "height": "" });
}
imgLocation();
myObj.win.resize(function () { imgLocation(); });
}else{
myObj.img().css({"width":"100%","height":"100%"});
}
};
//关闭遮罩层函数;
var closeLpsLayers = function () {
$("#"+rootId+layerNum).remove();
$("#"+rootId+"Cover"+layerNum).remove();
var layerNumExist="";//判断是否还有未关闭的层，如没有，则取消html及body的overflow:hidden;
for(var layerNumExist;$("#"+rootId+layerNumExist).length>0;layerNumExist++){}
if(layerNumExist==""){
myObj.html.css("overflow", "");
myObj.body().css("overflow", "");
};
};
if (obj.closeLayer) {
closeLpsLayers();
return;
}
//obj.address ? address = obj.address : $(this).attr("src") ? address = $(this).attr("src") : address = prompt("缺少地址(address),请输入图片或者iframe地址", "http://www.baidu.com"); //如果未设定则获取$(this)的地址,如果$(this)没有地址则提示加上地址;
//$(this).attr("src")?address=$(this).attr("src"):address=obj.address;
if (obj.type == "img") {
if (obj.address) {
var imgsrcArr = obj.address.split('/');
var imgName = imgsrcArr[imgsrcArr.length - 1].toLowerCase(); //获取图片名字
if (!/\.(gif|jpg|jpeg|png|pic)$/.test(imgName)) {
closeLpsLayers();
return false;
}
;
}
;
}
;
lpsLayerShow();
/***拖动层***/
if(obj.drag){
myObj.title().css("cursor","move")
var isMouseDown=false;
myObj.title().mousedown(function(e){
myObj.layer().appendTo(myObj.body());
myObj.layercover().css("height","100%");
isMouseDown=true;
var eOrgX=e.pageX,eOrgY=e.pageY,layerX=myObj.layer().offset().left,layerY=myObj.layer().offset().top;
myObj.html.mousemove(function(e){
if(isMouseDown){
myObj.layer().css({"left":layerX+e.pageX-eOrgX,"top":layerY+e.pageY-eOrgY});
if(/MSIE/.test(navigator.userAgent)){
e.preventDefault();
}
return false;
}
});
myObj.html.mouseup(function(){
myObj.html.unbind("mousemove");
isMouseDown=false;
});
});
};
//拖动右下角改变大小;
if(obj.resize){
var isResizeMouseDown=false;
myObj.layer().hover(function(){myObj.resizebtn().css("display","block")},function(){myObj.resizebtn().css("display","none")});
myObj.resizebtn().mousedown(function(e){
isResizeMouseDown=true;
var eOrgX=e.pageX,eOrgY=e.pageY,layerW=myObj.layer().width(),layerH=myObj.layer().height();
myObj.html.mousemove(function(e){
if (obj.type == "img" && !obj.stretch) {
var conRate = myObj.contentinner().width()/myObj.contentinner().height()*1;
var imgRate = parseInt(myObj.img().width())/parseInt(myObj.img().height());
conRate / imgRate > 1 ? myObj.img().css({ "width": "", "height":myObj.contentinner().height() }) : myObj.img().css({ "width": myObj.contentinner().width(), "height": "" });
}else{
myObj.img().css({"width":"100%","height":"100%"});
}
if(isResizeMouseDown){
myObj.layer().css({"width":layerW+e.pageX-eOrgX,"height":layerH+e.pageY-eOrgY});
myObj.contentinner().css("height",myObj.layer().height()-myObj.title().height());
if(/MSIE/.test(navigator.userAgent)){
e.preventDefault();
}
return false;
}
});
myObj.html.mouseup(function(){
myObj.html.unbind("mousemove");
isResizeMouseDown=false;
});
});
};
myObj.btnclose().click(function (e) {
closeLpsLayers();
e.stopPropagation();
});
obj.show({close:closeLpsLayers});
myObj.html.bind("click keydown", function (e) {
if ($(e.target).attr("id") == rootId+"Cover"+layerNum || e.keyCode == "27") {
closeLpsLayers();
e.stopPropagation();
}
});
if(obj.html){$("#"+rootId+"ConInner"+layerNum).html(obj.html);};//防止未解析完执行obj.html内的脚本，所以必须放在最后
}
$.lpsShowLayer=$.fn.lpsShowLayer;
})(jQuery);