document.onmousemove=function(ev){
var ev=ev||event,L,T;
L=ev.clientX-disx;
T=ev.clientY-disy;
if(L<0){
L=0;
}else if(L>that.con.parentNode.offsetWidth-that.con.offsetWidth){
L=that.con.parentNode.offsetWidth-that.con.offsetWidth;
};
if(T<0){
T=0;
}else if(T>that.con.parentNode.offsetHeight-that.con.offsetHeight){
T=that.con.parentNode.offsetHeight-that.con.offsetHeight;
};
that.con.style.left=L+'px';
that.con.style.top=T+'px';
that.img.style.left=-that.con.offsetLeft+'px';
that.img.style.top=-that.con.offsetTop+'px';
that.cPosition();
}
document.onmouseup=function(){
document.onmousemove=null;
document.onmouseup=null;
}
return false;
}
return this;
};
// 改变图片尺寸
CutImg.prototype.setSize=function(){
var that=this.con;
$('.p_180 img').css('width',that.parentNode.offsetWidth*180/that.offsetWidth);
$('.p_80 img').css('width',that.parentNode.offsetWidth*80/that.offsetWidth);
$('.p_70 img').css('width',that.parentNode.offsetWidth*70/that.offsetWidth);
return this;
};
// 改变图片位置
CutImg.prototype.cPosition=function(){
this.setPosition( $('.p_180'),180,210 );
this.setPosition( $('.p_80'),80,80 );
this.setPosition( $('.p_70'),70,70 );
return this;
};
// 设置三幅图片显示位置
CutImg.prototype.setPosition=function(obj,w,h){
var that=this.con;
obj.find('img').css({
'left':-w*that.offsetLeft/that.offsetWidth,
'top':-h*that.offsetTop/that.offsetHeight
});
return this;
};
// 保存截取后的头像
CutImg.prototype.saveImg=function() {
var x=0,y=0,w=180,h=210,that=this,cutObj=$('.cutImgBox')[0];
w=parseInt( this.oldW*cutObj.offsetWidth/that.imgBox.width() );
h=parseInt( w*that.scaley );
x=parseInt(cutObj.offsetLeft/(that.imgBox.width()-that.con.offsetWidth)*(this.oldW-w));
y=parseInt(cutObj.offsetTop/(that.imgBox.height()-that.con.offsetHeight)*(this.oldH-h));
x=x?x=x:x=0;y=y?y=y:y=0; //x/y可能为NaN
//x,y,w,h分别为后端需要的坐标及宽高
}
// 改变选区大小
CutImg.prototype.cSize=function(){
var that=this.con,This=this;
var thatImg=this.img;
$('.cSize .btn').each(function() {
var obj=this;
obj.onmousedown=function(e) {
var e=e||window.event;
var disx=e.clientX,disy=e.clientY;
var disw=that.offsetWidth,dish=that.offsetHeight,disl=that.offsetLeft,dist=that.offsetTop;
document.onmousemove=function(ev) {
var ev=ev||window.event,dirx=ev.clientX-disx,diry=ev.clientY-disy;
var minW=6,minH=7,L,T;
//点击第1部分改变选取尺寸
if( $(obj).hasClass('t1') ){
