本文实例为大家分享了全屏js头像上传插件源码，供大家参考，具体内容如下
index.html
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>ccp</title>
<link href="Content/ccp.css" rel="stylesheet" />
<script src="Scripts/cxc.js"></script>
<script src="Scripts/ccp.js"></script>
<script src="Scripts/fun.js"></script>
</head>
<body>
<div id="SelectPicture">选 择 图 片</div>
<div id="pre">
<div id="prea">
<div id="ctna">
<img id="imga"/>
</div>
</div>
<div id="preb">
<div id="ctnb">
<img id="imgb"/>
</div>
</div>
<div id="prec">
<div id="ctnc">
<img id="imgc"/>
</div>
</div>
</div>
<div id="ccp">
<div id="ctn">
<img id="fixed_img" />
<div id="varied_div">
<img id="varied_div_img" />
<i id="TopLeft"></i>
<i id="TopRight"></i>
<i id="BottomRight"></i>
<i id="BottomLeft"></i>
</div>
</div>
<div id="black_cover"></div>
</div>
<div id="bt">
<div id="Y_OUT">
<div id="Y">Y</div>
</div>
<div id="N_OUT">
<div id="N">N</div>
</div>
</div>
</body>
</html>
cxc.js
/* cxc.js 频繁操作公共接口 */
var $ = function (id) {
return document.getElementById(id);
}; //通过id获取dom对象
var A = function (msg) {
alert(msg);
}; //alert的简写
var EmptyFun = function () {
}; // 空方法
var setL = function (dom, L) {
dom.style.left = L + "px";
}; // 设置 dom 的 left
var setT = function (dom, T) {
dom.style.top = T + "px";
}; // 设置 dom 的 top
var setLT = function (dom, L, T) {
dom.style.left = L + "px";
dom.style.top = T + "px";
}; //同时设置 dom 的 left top
var getLT = function (dom) {
return [parseInt(dom.style.left), parseInt(dom.style.top)];
}; // 返回dom的left和top值，类型为整型数组[int,int]
var setW = function (W) {
dom.style.width = W + "px";
}; // 设置 dom 的 width
var setH = function (H) {
dom.style.height = H + "px";
}; // 设置 dom 的 height
var setWH = function (dom, W, H) {
dom.style.width = W + "px";
dom.style.height = H + "px";
}; //同时设置 dom 的 width height
var getWH = function (dom) {
return [parseInt(dom.style.width), parseInt(dom.style.height)];
}; // 返回dom的 width 和 height 值，类型为整型数组[int,int]
var setLTWH = function (dom, L, T, W, H) {
dom.style.left = L + "px";
dom.style.top = T + "px";
dom.style.width = W + "px";
dom.style.height = H + "px";
}; //同时设置 dom 的 left top width height
var setRTWH = function (dom, R, T, W, H) {
dom.style.right = R + "px";
dom.style.top = T + "px";
dom.style.width = W + "px";
dom.style.height = H + "px";
}; //同时设置 dom 的 left top width height
var getLTWH = function (dom) {
return [parseInt(dom.style.left), parseInt(dom.style.top), parseInt(dom.style.width), parseInt(dom.style.height)]
}; // 返回dom的 left top width height 值，类型为整型数组[int,int,int,int]
var setcursor = function (dom,shape) {
dom.style.cursor = shape;
}; //设置鼠标经过dom的指针形状
var EventsType = {//事件类型
click:"click",
mousedown:"mousedown",
mouseup:"mouseup",
mouseover:"mouseover",
mouseleave:"mouseleave",
mousemove:"mousemove",
DOMContentLoaded:"DOMContentLoaded",
};
var AddEvent = function (dom, type, fun) {
dom.addEventListener(type, fun, false);
}; //添加dom对象的事件监听方法
var AddEvent2 = function (dom, type1, fun1, type2, fun2) {
dom.addEventListener(type1, fun1, false);
dom.addEventListener(type2, fun2, false);
}; //一次添加dom的两个事件监听方法
var AddEvent3 = function (dom, type1, fun1, type2, fun2, type3, fun3) {
dom.addEventListener(type1, fun1, false);
dom.addEventListener(type2, fun2, false);
dom.addEventListener(type3, fun3, false);
}; //一次添加dom的三个事件监听方法
var DelEvent = function (dom, type, fun) {
dom.removeEventListener(type, fun, false);
}; // 删除dom对象的事件监听方法
var DelEvent2 = function (dom, type1, fun1, type2, fun2) {
dom.removeEventListener(type1, fun1, false);
dom.removeEventListener(type2, fun2, false);
}; //一次删除dom对象的两个事件监听方法
var DelEvent3 = function (dom, type1, fun1, type2, fun2, type3, fun3) {
dom.removeEventListener(type1, fun1, false);
dom.removeEventListener(type2, fun2, false);
dom.removeEventListener(type3, fun3, false);
}; //一次删除dom对象的三个事件监听方法
var inArray = function (str, arr) {
for (var i = 0; i < arr.length; i++) {
if (str == arr[i]) {
return true;
}
}
return false;
}; // 判断字符串str是否存在于数组arr
var cannotselect = function () {
window.getSelection().removeAllRanges();
}; //页面元素（文字、图片等）不能被选中
var setStyle = function (dom, styleName, styleValue) {
dom.setAttribute("style", styleName + ":" + styleValue + ";");
}; //设置dom的 一个style 属性值
var setStyle2 = function (dom, styleName1, styleValue1, styleName2, styleValue2) {
dom.setAttribute("style", styleName1 + ":" + styleValue1 + ";" + styleName2 + ":" + styleValue2 + ";");
};//一次设置dom的 两个style 属性值
var delStyle = function (dom, styleName) {
dom.removeAttribute("style", styleName);
};//删除dom的 一个style 属性值
var delStyle2 = function (dom, styleName1, styleName2) {
dom.removeAttribute("style", styleName1);
dom.removeAttribute("style", styleName2);
};//一次删除dom的 两个style 属性值
var setAttr = function (dom, attrName, attrValue) {
dom.setAttribute(attrName, attrValue);
};// 设置dom的 一个属性值
var setAttr2 = function (dom, attrName1, attrValue1, attrName2, attrValue2) {
dom.setAttribute(attrName1, attrValue1);
dom.setAttribute(attrName2, attrValue2);
};//一次设置dom的 两个属性值
var delAttr = function (dom, attrName) {
dom.removeAttribute(attrName);
};//删除dom的 一个属性值
var delAttr2 = function (dom, attrName1, attrName2) {
dom.removeAttribute(attrName1);
dom.removeAttribute(attrName2);
};//删除dom 的两个属性值
var Hide = function (dom) {
dom.style.display = "none";
};// 隐藏dom
var Hide3 = function (dom1,dom2,dom3) {
dom1.style.display = "none";
dom2.style.display = "none";
dom3.style.display = "none";
};// 隐藏3个dom
var Show = function (dom) {
dom.style.display = "inline";
}; // 显示dom
var Show3 = function (dom1, dom2, dom3) {
dom1.style.display = "inline";
dom2.style.display = "inline";
dom3.style.display = "inline";
};// 显示3个dom
/* cxc.js 频繁操作公共接口 */
/* AJAX 接口 */
var url, method, msg;
var xmlReq = new XMLHttpRequest();
var AJAX = function (url, method, msg, callback) {
xmlReq.open(method, url, true);
xmlReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlReq.onreadystatechange = function () {
if (xmlReq.readyState == 4) {
if (xmlReq.status == 200) {
callback();
}
else {
A("ajax status is " + xmlReq.status);
}
}
};
xmlReq.send(msg);
};
/* AJAX 接口 */
/* 入口 */
var start = function (fun) {
var begin = function () {
DelEvent(document, EventsType.DOMContentLoaded, begin);
fun();
};
AddEvent(document, EventsType.DOMContentLoaded, begin);
};
/* 入口 */
/* 环境 */
var screenW = window.innerWidth;
var screenH = window.innerHeight;
/* 环境 */
ccp.js
var cfg = {
imgtype: ["image/jpeg", "image/png", "image/gif", "image/bmp"],
imgsize: 5 * 1024 * 1024,
varied_divMIN: 50,
varied_divDEFAULT: 100,
needWH:0,
};
var dom = {
body: null,
SelectPicture: null,
upfile: null,
pre: null,
ccp: null,
bt: null,
prea: null,
preb: null,
prec: null,
ctna: null,
ctnb: null,
ctnc: null,
imga: null,
imgb: null,
imgc: null,
Y_OUT: null,
N_OUT: null,
Y: null,
N: null,
ctn: null,
black_cover: null,
fixed_img: null,
varied_div: null,
varied_div_img: null,
TopLeft: null,
TopRight: null,
BottomRight: null,
BottomLeft: null,
};
var ccp = {
SelectPictureW: null,
SelectPictureH: null,
SelectPictureP1: 9,
SelectPictureP2: 4,
SelectPictureL: null,
SelectPictureT: null,
SelectPictureFontSize: null,
///////////////////////////
file: null,
imgtype: null,
imgsize: null,
///////////////////////////
imgW: null,
imgH: null,
imgN: null,
imgURL: null,
//////////////////////////
preW: null,
preH: null,
ccpW: null,
ccpH: null,
btW: null,
btH: null,
/////////////////////////
pre4: null,
preaL: null,
preaT: null,
preaWH: null,
prebL: null,
prebT: null,
prebWH: null,
precL: null,
precT: null,
precWH: null,
ctnLT: 3,
ctnaWH: null,
ctnbWH: null,
ctncWH: null,
//////////////////////////
YN3: null,
YN_OUTWH: null,
YNWH: null,
YN_OUTR: null,
Y_OUTT: null,
N_OUTT: null,
YNLT1: 25,
YNLT2: 20,
//////////////////////////
ctnL: null,
ctnT: null,
black_coverL: null,
black_coverT: null,
/////////////////////////
varied_divL: null,
varied_divT: null,
varied_divWH: null,
varied_divMaxL: null,
varied_divMaxT: null,
varied_div_imgWH: null,
varied_div_imgL: null,
varied_div_imgT: null,
/////////////////////////
imgaW: null,
imgaH: null,
imgaL: null,
imgaT: null,
imgbW: null,
imgbH: null,
imgbL: null,
imgbT: null,
imgcW: null,
imgcH: null,
imgcL: null,
imgcT: null,
/////////////////////////
};
var GET_DOM = function () {
dom.body = document.body;
dom.pre = $("pre");
dom.ccp = $("ccp");
dom.bt = $("bt");
dom.SelectPicture = $("SelectPicture");
dom.prea = $("prea");
dom.preb = $("preb");
dom.prec = $("prec");
dom.ctna = $("ctna");
dom.ctnb = $("ctnb");
dom.ctnc = $("ctnc");
dom.imga = $("imga");
dom.imgb = $("imgb");
dom.imgc = $("imgc");
dom.Y_OUT = $("Y_OUT");
dom.N_OUT = $("N_OUT");
dom.Y = $("Y");
dom.N = $("N");
dom.ctn = $("ctn");
dom.black_cover = $("black_cover");
dom.fixed_img = $("fixed_img");
dom.varied_div = $("varied_div");
dom.varied_div_img = $("varied_div_img");
dom.TopLeft = $("TopLeft");
dom.TopRight = $("TopRight");
dom.BottomRight = $("BottomRight");
dom.BottomLeft = $("BottomLeft");
};
var INIT_DOM = function () {
setStyle2(dom.body, "width", screenW + "px", "height", screenH + "px");
dom.body.style.backgroundImage = get_random_bgimg(7);/////////////////////
set_SelectPictureW(Math.floor(screenW / ccp.SelectPictureP1));
AddEvent2(dom.SelectPicture, EventsType.mouseover, SelectPicture_mouseover, EventsType.mouseleave, SelectPicture_mouseleave);
AddEvent(dom.SelectPicture, EventsType.click, SelectPicture_click);/////////////////////
ccp.preH = ccp.ccpH = ccp.btH = screenH - 2;
ccp.ccpW = screenH + 100 - 2;
ccp.preW = Math.ceil((screenW - (ccp.ccpW + 2)) / 2) - 2;
ccp.btW = screenW - (ccp.ccpW + 2) - (ccp.preW + 2) - 2;
setStyle2(dom.pre, "width", ccp.preW + "px", "height", ccp.preH + "px");
setStyle2(dom.ccp, "width", ccp.ccpW + "px", "height", ccp.ccpH + "px");
setStyle2(dom.bt, "width", ccp.btW + "px", "height", ccp.btH + "px");
Hide3(dom.pre, dom.ccp, dom.bt);/////////////////////
};
var EVENTS = function () {
AddEvent(dom.varied_div, EventsType.mousedown, varied_div_mousedown);//varied_div
AddEvent(dom.TopLeft, EventsType.mousedown, TopLeft_mousedown);//TopLeft
AddEvent(dom.TopRight, EventsType.mousedown, TopRight_mousedown);//TopRight
AddEvent(dom.BottomRight, EventsType.mousedown, BottomRight_mousedown);//BottomRight
AddEvent(dom.BottomLeft, EventsType.mousedown, BottomLeft_mousedown);//BottomLeft
AddEvent(dom.Y, EventsType.click, Y_click);//Y
AddEvent(dom.N, EventsType.click, N_click);//N
};
var END = function () {
AddEvent(document, EventsType.mousemove, cannotselect);
};
start(function () {
GET_DOM();
INIT_DOM();
EVENTS();
END();
});
fun.js
var get_random_bgimg = function (n) {
var m = Math.floor(Math.random() * n);
var r = "url(Images/bg" + 6 + ".png)";
return r;
};
var set_SelectPictureW = function (W) {
ccp.SelectPictureW = W;
ccp.SelectPictureH = Math.floor(ccp.SelectPictureW / ccp.SelectPictureP2);
ccp.SelectPictureL = Math.floor((screenW - ccp.SelectPictureW) / 2);
ccp.SelectPictureT = Math.floor((screenH - ccp.SelectPictureH) / 2);
ccp.SelectPictureFontSize = Math.floor(ccp.SelectPictureH / 1.5);
setStyle(dom.SelectPicture, "font-size", ccp.SelectPictureFontSize + "px");
setLTWH(dom.SelectPicture, ccp.SelectPictureL, ccp.SelectPictureT, ccp.SelectPictureW, ccp.SelectPictureH);
};
var SelectPicture_mouseover = function () {
set_SelectPictureW(ccp.SelectPictureW + 15);
};
var SelectPicture_mouseleave = function () {
set_SelectPictureW(ccp.SelectPictureW - 15);
};
///////////////////////////////////////////////////
var downX, downY, oldL, oldT, tempWH, tempL, tempT, dxMax, tempMaxL, tempMaxT;
var varied_divLimit = function () {
if (ccp.varied_divL < 0)
ccp.varied_divL = 0;
else if (ccp.varied_divL > ccp.varied_divMaxL)
ccp.varied_divL = ccp.varied_divMaxL;
if ((ccp.varied_divT < 0))
ccp.varied_divT = 0;
else if (ccp.varied_divT > ccp.varied_divMaxT)
ccp.varied_divT = ccp.varied_divMaxT;
};
var varied_div_mousedown = function (e) {
if (e.button > 0) {
varied_div_mouseup();
return false;
}
e.preventDefault && e.preventDefault();
downX = e.clientX;
downY = e.clientY;
oldL = ccp.varied_divL;
oldT = ccp.varied_divT;
AddEvent2(document, EventsType.mouseup, varied_div_mouseup, EventsType.mousemove, doc_varied_div_mousemove);
};
var doc_varied_div_mousemove = function (e) {
ccp.varied_divL = oldL + e.clientX - downX;
ccp.varied_divT = oldT + e.clientY - downY;
varied_divLimit();
setLT(dom.varied_div, ccp.varied_divL, ccp.varied_divT);
setvaried_div_img();
setpreimg();
};
var varied_div_mouseup = function () {
DelEvent2(document, EventsType.mouseup, varied_div_mouseup, EventsType.mousemove, doc_varied_div_mousemove);
};
////////////////////////////////////////////////////
var TopLeft_mousedown = function (e) {
if (e.button > 0) {
TopLeft_mouseup();
return false;
}
e.preventDefault && e.preventDefault();
downX = e.clientX;
downY = e.clientY;
oldL = ccp.varied_divL;
oldT = ccp.varied_divT;
tempWH = ccp.varied_divWH;
tempL = ccp.varied_divL;
tempT = ccp.varied_divT;
tempMaxL = ccp.varied_divMaxL;
tempMaxT = ccp.varied_divMaxT;
dxMax = tempL >= tempT ? tempT : tempL;
AddEvent2(document, EventsType.mouseup, TopLeft_mouseup, EventsType.mousemove, doc_TopLeft_mousemove);
};
var doc_TopLeft_mousemove = function (e) {
varied_div_mouseup();//移动事件屏蔽，非常重要
var dx = e.clientY - downY;
if (dx < 0 && Math.abs(dx) > dxMax) {
dx = -dxMax;
}
else if (dx > 0 && dx > tempWH - cfg.varied_divMIN) {
dx = tempWH - cfg.varied_divMIN;
}
ccp.varied_divMaxL = tempMaxL + dx;
ccp.varied_divMaxT = tempMaxT + dx;
ccp.varied_divL = oldL + dx;
ccp.varied_divT = oldT + dx;
ccp.varied_divWH = tempWH - dx;
setLTWH(dom.varied_div, ccp.varied_divL, ccp.varied_divT, ccp.varied_divWH, ccp.varied_divWH);
setvaried_div_img();
setpreimg();
};
var TopLeft_mouseup = function () {
DelEvent2(document, EventsType.mouseup, TopLeft_mouseup, EventsType.mousemove, doc_TopLeft_mousemove);
};
////////////////////////////////////////////////////
var TopRight_mousedown = function (e) {
if (e.button > 0) {
TopRight_mouseup();
return false;
}
e.preventDefault && e.preventDefault();
downX = e.clientX;
downY = e.clientY;
oldL = ccp.varied_divL;
oldT = ccp.varied_divT;
tempWH = ccp.varied_divWH;
tempL = ccp.imgW - ccp.varied_divL - ccp.varied_divWH;
tempT = ccp.varied_divT;
tempMaxL = ccp.varied_divMaxL;
tempMaxT = ccp.varied_divMaxT;
dxMax = tempL >= tempT ? tempT : tempL;
AddEvent2(document, EventsType.mouseup, TopRight_mouseup, EventsType.mousemove, doc_TopRight_mousemove);
};
var doc_TopRight_mousemove = function (e) {
varied_div_mouseup();//移动事件屏蔽，非常重要
var dx = e.clientY - downY;
if (dx < 0 && Math.abs(dx) > dxMax) {
dx = -dxMax;
}
else if (dx > 0 && dx > tempWH - cfg.varied_divMIN) {
dx = tempWH - cfg.varied_divMIN;
}
ccp.varied_divMaxL = tempMaxL + dx;
ccp.varied_divMaxT = tempMaxT + dx;
ccp.varied_divL = oldL;
ccp.varied_divT = oldT + dx;
ccp.varied_divWH = tempWH - dx;
setLTWH(dom.varied_div, ccp.varied_divL, ccp.varied_divT, ccp.varied_divWH, ccp.varied_divWH);
setvaried_div_img();
setpreimg();
};
var TopRight_mouseup = function () {
DelEvent2(document, EventsType.mouseup, TopRight_mouseup, EventsType.mousemove, doc_TopRight_mousemove);
};
///////////////////////////////////////////////////
var BottomRight_mousedown = function (e) {
if (e.button > 0) {
BottomRight_mouseup();
return false;
}
e.preventDefault && e.preventDefault();
downX = e.clientX;
downY = e.clientY;
oldL = ccp.varied_divL;
oldT = ccp.varied_divT;
tempWH = ccp.varied_divWH;
tempL = ccp.imgW - ccp.varied_divL - ccp.varied_divWH;
tempT = ccp.imgH - ccp.varied_divT - ccp.varied_divWH;
tempMaxL = ccp.varied_divMaxL;
tempMaxT = ccp.varied_divMaxT;
dxMax = tempL >= tempT ? tempT : tempL;
AddEvent2(document, EventsType.mouseup, BottomRight_mouseup, EventsType.mousemove, doc_BottomRight_mousemove);
};
var doc_BottomRight_mousemove = function (e) {
varied_div_mouseup();//移动事件屏蔽，非常重要
var dx = e.clientY - downY;
if (dx > 0 && dx > dxMax) {
dx = dxMax;
}
else if (dx < 0 && Math.abs(dx) > tempWH - cfg.varied_divMIN) {
dx = -(tempWH - cfg.varied_divMIN);
}
ccp.varied_divMaxL = tempMaxL - dx;
ccp.varied_divMaxT = tempMaxT - dx;
ccp.varied_divL = oldL;
ccp.varied_divT = oldT;
ccp.varied_divWH = tempWH + dx;
setLTWH(dom.varied_div, ccp.varied_divL, ccp.varied_divT, ccp.varied_divWH, ccp.varied_divWH);
setvaried_div_img();
setpreimg();
};
var BottomRight_mouseup = function () {
DelEvent2(document, EventsType.mouseup, BottomRight_mouseup, EventsType.mousemove, doc_BottomRight_mousemove);
};
///////////////////////////////////////////////////
var BottomLeft_mousedown = function (e) {
if (e.button > 0) {
BottomLeft_mouseup();
return false;
}
e.preventDefault && e.preventDefault();
downX = e.clientX;
downY = e.clientY;
oldL = ccp.varied_divL;
oldT = ccp.varied_divT;
tempWH = ccp.varied_divWH;
tempL = ccp.varied_divL;
tempT = ccp.imgH - ccp.varied_divT - ccp.varied_divWH;
tempMaxL = ccp.varied_divMaxL;
tempMaxT = ccp.varied_divMaxT;
dxMax = tempL >= tempT ? tempT : tempL;
AddEvent2(document, EventsType.mouseup, BottomLeft_mouseup, EventsType.mousemove, doc_BottomLeft_mousemove);
};
var doc_BottomLeft_mousemove = function (e) {
varied_div_mouseup();//移动事件屏蔽，非常重要
var dx = e.clientY - downY;
if (dx > 0 && dx > dxMax) {
dx = dxMax;
}
else if (dx < 0 && Math.abs(dx) > tempWH - cfg.varied_divMIN) {
dx = -(tempWH - cfg.varied_divMIN);
}
ccp.varied_divMaxL = tempMaxL - dx;
ccp.varied_divMaxT = tempMaxT - dx;
ccp.varied_divL = oldL - dx;
ccp.varied_divT = oldT;
ccp.varied_divWH = tempWH + dx;
setLTWH(dom.varied_div, ccp.varied_divL, ccp.varied_divT, ccp.varied_divWH, ccp.varied_divWH);
setvaried_div_img();
setpreimg();
};
var BottomLeft_mouseup = function () {
DelEvent2(document, EventsType.mouseup, BottomLeft_mouseup, EventsType.mousemove, doc_BottomLeft_mousemove);
};
///////////////////////////////////////////////////
var getDATA = function () {
var parameter = location.search; //获取url中"?"符后的字串
if (parameter.length == 0) {
return 666;
} else {
var ss = parameter.split("&");
url = ss[0].split("=")[1];
cfg.needWH = ss[1].split("=")[1];
}
if (url.length == 0) {
return 777;
} else if (cfg.needWH == 0) {
return 888;
} else if (cfg.needWH > 1000) {
return 999;
}
var canvas = document.createElement("canvas");
canvas.style.display = "none";
var ctx = canvas.getContext("2d");
ctx.fillStyle = "#FFFFFF";
canvas.width = canvas.height = cfg.needWH;
ctx.fillRect(0, 0, cfg.needWH, cfg.needWH);
var a = Math.ceil(ccp.varied_divL * ccp.imgN);
var b = Math.ceil(ccp.varied_divT * ccp.imgN);
var c = Math.ceil(ccp.varied_divWH * ccp.imgN);
ctx.drawImage(dom.fixed_img, a, b, c, c, 0, 0, cfg.needWH, cfg.needWH);
return canvas.toDataURL(ccp.imgtype, 1);
};
var callback = function () {
var txt = xmlReq.responseText;
alert(txt);
window.opener = null;
window.open('', '_self');
window.close();
};
var Y_click = function () {
var DATA = getDATA();
DATA == 666 && alert("没有参数");
DATA == 777 && alert("没有返回地址");
DATA == 888 && alert("未给出返回图片大小");
DATA == 999 && alert("图片大小不能超过 1000 X 1000");
if (DATA == 666 || DATA == 777 || DATA == 888 || DATA == 999) {
window.opener = null;
window.open('', '_self');
window.close();
}//没有参数或参数错误关闭页面
method = "post";
msg = "";
AJAX(url, method, "DATA=" + DATA, callback);
};
var N_click = function () {
Hide3(dom.pre, dom.ccp, dom.bt);
};
///////////////////////////////////////////////////
var check_imgtype = function () {
if (!inArray(ccp.imgtype, cfg.imgtype)) {
alert("请选择正确的图片类型");
return false;
} else { return true; }
};
var check_imgsize = function () {
if (ccp.imgsize > cfg.imgsize) {
alert("图片不能超过"+(cfg.imgsize/1024)/1024+"M");
return false;
} else { return true; }
};
var set_pre = function () {
ccp.preaWH = Math.round(ccp.preW * 0.6);
ccp.prebWH = Math.round(ccp.preW * 0.5);
ccp.precWH = Math.round(ccp.preW * 0.4);
ccp.preaL = Math.round((ccp.preW - ccp.preaWH) / 2);
ccp.prebL = Math.round((ccp.preW - ccp.prebWH) / 2);
ccp.precL = Math.round((ccp.preW - ccp.precWH) / 2);
ccp.pre4 = Math.round((ccp.preH - ccp.preaWH - ccp.prebWH - ccp.precWH) / 4);
ccp.preaT = ccp.pre4;
ccp.prebT = ccp.pre4 * 2 + ccp.preaWH;
ccp.precT = ccp.pre4 * 3 + ccp.preaWH + ccp.prebWH;
setLTWH(dom.prea, ccp.preaL, ccp.preaT, ccp.preaWH, ccp.preaWH);
setLTWH(dom.preb, ccp.prebL, ccp.prebT, ccp.prebWH, ccp.prebWH);
setLTWH(dom.prec, ccp.precL, ccp.precT, ccp.precWH, ccp.precWH);
////////////////////////////////////////////////////////////////
ccp.ctnaWH = ccp.preaWH - ccp.ctnLT * 2;
ccp.ctnbWH = ccp.prebWH - ccp.ctnLT * 2;
ccp.ctncWH = ccp.precWH - ccp.ctnLT * 2;
setLTWH(dom.ctna, ccp.ctnLT, ccp.ctnLT, ccp.ctnaWH, ccp.ctnaWH);
setLTWH(dom.ctnb, ccp.ctnLT, ccp.ctnLT, ccp.ctnbWH, ccp.ctnbWH);
setLTWH(dom.ctnc, ccp.ctnLT, ccp.ctnLT, ccp.ctncWH, ccp.ctncWH);
dom.imga.src = dom.imgb.src = dom.imgc.src = ccp.imgURL;
};
var setYN = function (dom, n) {
ccp.YNWH = ccp.YN_OUTWH - n * 2;
setStyle(dom, "font-size", Math.floor(ccp.YNWH * 0.9) + "px");
setLTWH(dom, n, n, ccp.YNWH, ccp.YNWH);
};
var Y_mouseover = function () {
setYN(dom.Y, ccp.YNLT2);
};
var Y_mouseleave = function () {
setYN(dom.Y, ccp.YNLT1);
};
var N_mouseover = function () {
setYN(dom.N, ccp.YNLT2);
};
var N_mouseleave = function () {
setYN(dom.N, ccp.YNLT1);
};
var set_bt = function () {
ccp.YN_OUTWH = Math.round(ccp.btW * 0.6);
ccp.YN_OUTR = Math.round((ccp.btW - ccp.YN_OUTWH) / 2);
ccp.YN3 = Math.round((ccp.btH - ccp.YN_OUTWH * 2) / 3);
ccp.Y_OUTT = ccp.YN3;
ccp.N_OUTT = ccp.YN3 * 2 + ccp.YN_OUTWH;
setRTWH(dom.Y_OUT, ccp.YN_OUTR, ccp.Y_OUTT, ccp.YN_OUTWH, ccp.YN_OUTWH);
setRTWH(dom.N_OUT, ccp.YN_OUTR, ccp.N_OUTT, ccp.YN_OUTWH, ccp.YN_OUTWH);
setYN(dom.Y, ccp.YNLT1);
setYN(dom.N, ccp.YNLT1);
AddEvent2(dom.Y, EventsType.mouseover, Y_mouseover, EventsType.mouseleave, Y_mouseleave);
AddEvent2(dom.N, EventsType.mouseover, N_mouseover, EventsType.mouseleave, N_mouseleave);
};
var setvaried_div = function () {
if (ccp.imgW > ccp.imgH) {
ccp.varied_divWH = ccp.imgH < cfg.varied_divDEFAULT ? ccp.imgH : cfg.varied_divDEFAULT;
}
else {
ccp.varied_divWH = ccp.imgW < cfg.varied_divDEFAULT ? ccp.imgW : cfg.varied_divDEFAULT;
}
ccp.varied_divL = Math.round((ccp.imgW - ccp.varied_divWH) / 2);
ccp.varied_divT = Math.round((ccp.imgH - ccp.varied_divWH) / 2);
ccp.varied_divMaxL = ccp.imgW - ccp.varied_divWH;
ccp.varied_divMaxT = ccp.imgH - ccp.varied_divWH;
setLTWH(dom.varied_div, ccp.varied_divL, ccp.varied_divT, ccp.varied_divWH, ccp.varied_divWH);
};
var setvaried_div_img = function () {
ccp.varied_div_imgL = -ccp.varied_divL;
ccp.varied_div_imgT = -ccp.varied_divT;
setLT(dom.varied_div_img, ccp.varied_div_imgL, ccp.varied_div_imgT);
};
var setpreimg = function () {
var p1, p2, p3;
p1 = ccp.ctnaWH / ccp.varied_divWH;
p2 = ccp.ctnbWH / ccp.varied_divWH;
p3 = ccp.ctncWH / ccp.varied_divWH;
ccp.imgaW = Math.round(p1 * ccp.imgW);
ccp.imgaH = Math.round(p1 * ccp.imgH);
ccp.imgaL = Math.round(p1 * ccp.varied_div_imgL);
ccp.imgaT = Math.round(p1 * ccp.varied_div_imgT);
ccp.imgbW = Math.round(p2 * ccp.imgW);
ccp.imgbH = Math.round(p2 * ccp.imgH);
ccp.imgbL = Math.round(p2 * ccp.varied_div_imgL);
ccp.imgbT = Math.round(p2 * ccp.varied_div_imgT);
ccp.imgcW = Math.round(p3 * ccp.imgW);
ccp.imgcH = Math.round(p3 * ccp.imgH);
ccp.imgcL = Math.round(p3 * ccp.varied_div_imgL);
ccp.imgcT = Math.round(p3 * ccp.varied_div_imgT);
setLTWH(dom.imga, ccp.imgaL, ccp.imgaT, ccp.imgaW, ccp.imgaH);
setLTWH(dom.imgb, ccp.imgbL, ccp.imgbT, ccp.imgbW, ccp.imgbH);
setLTWH(dom.imgc, ccp.imgcL, ccp.imgcT, ccp.imgcW, ccp.imgcH);
};
var set_ccp = function () {
ccp.ctnL = ccp.preW + 3 + Math.ceil((ccp.ccpW - ccp.imgW) / 2);
ccp.ctnT = 1 + Math.ceil((ccp.ccpH - ccp.imgH) / 2);
setLTWH(dom.ctn, ccp.ctnL, ccp.ctnT, ccp.imgW, ccp.imgH);
ccp.black_coverL = ccp.preW + 3;
ccp.black_coverT = 1;
setLTWH(dom.black_cover, ccp.black_coverL, ccp.black_coverT, ccp.ccpW, ccp.ccpH);
setLTWH(dom.fixed_img, 0, 0, ccp.imgW, ccp.imgH);
dom.fixed_img.src = ccp.imgURL;
setvaried_div();
setWH(dom.varied_div_img, ccp.imgW, ccp.imgH);
dom.varied_div_img.src = ccp.imgURL;
setvaried_div_img();
setpreimg();
};
var setStart = function () {
set_pre();
set_bt();
set_ccp();
Show3(dom.pre, dom.ccp, dom.bt);
};
var setImgWH = function (src, type) {
var image = new Image();
image.onload = function () {
var width = this.width, height = this.height;//图片的宽高
var p = width / height;
if (p > 1) {
if (p > ccp.ccpW / 50) {
alert("图片宽高比不能超过" + p);
return;
}
else {
if (height < 50) {
ccp.imgN = height / 50;
ccp.imgH = 50;
ccp.imgW = Math.round(ccp.imgH * p);
}
else if (width > ccp.ccpW) {
ccp.imgN = width / ccp.ccpW;
ccp.imgW = ccp.ccpW;
ccp.imgH = Math.round(ccp.imgW / p);
}
else {
ccp.imgN = 1;
ccp.imgW = width;
ccp.imgH = height;
}
}
}
else {
if (p < 50 / ccp.ccpH) {
alert("图片宽高比不能小于" + p);
return;
}
else {
if (width < 50) {
ccp.imgN = width / 50;
ccp.imgW = 50;
ccp.imgH = Math.round(ccp.imgW / p);
}
else if (height > ccp.ccpH) {
ccp.imgN = height / ccp.ccpH;
ccp.imgH = ccp.ccpH;
ccp.imgW = Math.round(ccp.imgH * p);
}
else {
ccp.imgN = 1;
ccp.imgW = width;
ccp.imgH = height;
}
}
}
ccp.imgURL = this.src;
delete image;
setStart();
};
image.onerror = function () {
alert("图片已损坏，请上传正确图片");
};
image.src = src;
};
var SelectPicture_click = function () {
dom.upfile = document.createElement("input");
setAttr2(dom.upfile, "type", "file", "id", "upfile");
dom.upfile.click();
dom.upfile.onchange = function () {
ccp.file = this.files[0];
ccp.imgtype = ccp.file.type;
if (!check_imgtype()) {
return;
} //检查文件类型
ccp.imgsize = ccp.file.size;
if (!check_imgsize()) {
return;
}; //检查图片大小
var reader = new FileReader();
reader.onload = function () {
setImgWH(this.result, ccp.imgtype);
};
reader.readAsDataURL(ccp.file);
};
};
ccp.css
*{
margin:0px;
padding:0px;
}
#SelectPicture{
position:absolute;
border:3px solid #ff6a00;
border-radius:8px;
color:#ff6a00;
text-align:center;
font-family:'Microsoft YaHei';
cursor:pointer;
}
#upfile{
display:none;
}
#pre,#ccp,#bt{
float:left;
z-index:1;
border:1px solid #ffffff;
}
#ccp{
border:1px dashed #808080;
border-left:1px dashed #808080;
border-right:1px dashed #808080;
}
#prea,#preb,#prec{
position:absolute;
background-color:#ff6a00;
border-radius:7px;
}
#ctna,#ctnb,#ctnc{
position:absolute;
background-color:#ffffff;
overflow:hidden;
}
#imga,#imgb,#imgc{
position:absolute;
left:0px;
top:0px;
}
#Y_OUT,#N_OUT{
position:absolute;
}
#Y,#N{
/* background-color:#ff6a00;*/
position:absolute;
text-align:center;
border:3px solid #ff6a00;
border-radius:50%;
color:#ff6a00;
font-family:Arial;
cursor:pointer;
}
#ctn{
position:absolute;
background-color:blueviolet;
overflow:hidden;
}
#black_cover{
position:absolute;
background-color:black;
opacity:0.6;
z-index:3;
}
#fixed_img{
position:absolute;
}
#varied_div{
position:absolute;
z-index:4;
overflow: hidden;
cursor:move;
}
#BottomRight,#TopRight,#TopLeft,#BottomLeft {
background:#D6FB66;
display:block;
width:6px;
height:6px;
position:absolute;
z-index:5;
bottom:0;
right:0;
cursor:nw-resize;
}
#BottomLeft {
bottom:0;
left:0;
cursor:ne-resize;
}
#TopRight {
top:0;
right:0;
cursor:ne-resize;
}
#TopLeft {
top:0;
left:0;
cursor:nw-resize;
}
#varied_div_img{
position:absolute;
z-index:5;
}
以上就是本文的全部内容，希望对大家学习javascript程序设计有所帮助。
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