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css.js
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css.js
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//=========================================
// 样式操作模块 by 司徒正美
//=========================================
define( "css", !!top.getComputedStyle ? ["$node"] : ["$node","$css_fix"] , function(){
//$.log( "已加载css模块" );
var adapter = $.cssAdapter = $.cssAdapter || {}
var rrelNum = /^([\-+])=([\-+.\de]+)/
var rnumnonpx = /^-?(?:\d*\.)?\d+(?!px)[^\d\s]+$/i
$.implement({
css : function( name, value , neo){
if(typeof name === "string"){
neo = $.cssName(name) || name;
}
return $.access( this, name, value, $.css, neo || this );
}
});
$.mix({
scrollbarWidth: function (){
if( $.scrollbarWidth.ret ){
return $.scrollbarWidth.ret
}
var test = $('<div style="width: 100px;height: 100px;overflow: scroll;position: absolute;top: -9999px;"/>').appendTo("body");
var ret = test[0].offsetWidth - test[0].clientWidth;
test.remove();
return $.scrollbarWidth.ret = ret;
},
//这里的属性不需要自行添加px
cssNumber: $.oneObject("fontSizeAdjust,fontWeight,lineHeight,opacity,orphans,widows,zIndex,zoom,rotate"),
css: function( node, name, value){
if(node.style){//注意string经过call之后，变成String伪对象，不能简单用typeof来检测
name = $.type(this, "String") ? this : $.cssName( name ) || name;
if( value === void 0){ //取值
return (adapter[ name+":get" ] || adapter[ "_default:get" ])( node, name );
}else {//设值
var temp;
if ( typeof value === "string" && (temp = rrelNum.exec( value )) ) {
value = ( temp[1] + 1) * temp[2] + parseFloat( $.css( node, name, void 0) );
}
if ( isFinite( value ) && !$.cssNumber[ name ] ) {
value += "px";
}
(adapter[name+":set"] || adapter[ "_default:set" ])( node, name, value );
}
}
}
});
//IE9 FF等支持getComputedStyle
$.mix(adapter, {
"_default:set" :function( node, name, value){
node.style[ name ] = value;
}
},false);
//有关单位转换的 http://heygrady.com/blog/2011/12/21/length-and-angle-unit-conversion-in-javascript/
if ( document.defaultView && document.defaultView.getComputedStyle ) {
adapter[ "_default:get" ] = function( node, name ) {
var ret, defaultView, computedStyle;
if ( !(defaultView = node.ownerDocument.defaultView) ) {
return undefined;
}
// var underscored = name == "cssFloat" ? "float" :
// name.replace( /([A-Z]|^ms)/g, "-$1" ).toLowerCase(),
var rmargin = /^margin/, style = node.style ;
if ( (computedStyle = defaultView.getComputedStyle( node, null )) ) {
ret = computedStyle[name] //.getPropertyValue( underscored );
if ( ret === "" && !$.contains( node.ownerDocument, node ) ) {
ret = style[name];//如果还没有加入DOM树，则取内联样式
}
}
// A tribute to the "awesome hack by Dean Edwards"
// WebKit uses "computed value (percentage if specified)" instead of "used value" for margins
// which is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
if ( !$.support.cssPercentedMargin && computedStyle && rmargin.test( name ) && rnumnonpx.test( ret ) ) {
var width = style.width;
style.width = ret;
ret = computedStyle.width;
style.width = width;
}
return ret === "" ? "auto" : ret;
};
}
//http://extremelysatisfactorytotalitarianism.com/blog/?p=1002
//http://someguynameddylan.com/lab/transform-origin-in-internet-explorer.php
//优化HTML5应用的体验细节，例如全屏的处理与支持，横屏的响应，图形缩放的流畅性和不失真，点触的响应与拖曳，Websocket的完善
//关于JavaScript中计算精度丢失的问题 http://rockyee.iteye.com/blog/891538
function toFixed(d){
return d > -0.0000001 && d < 0.0000001 ? 0 : /e/.test(d+"") ? d.toFixed(7) : d;
}
function toFloat(d, x){
return isFinite(d) ? d: parseFloat(d) || x
}
//http://zh.wikipedia.org/wiki/%E7%9F%A9%E9%98%B5
//http://help.dottoro.com/lcebdggm.php
var Matrix2D = $.factory({
init: function(){
this.set.apply(this, arguments);
},
cross: function(a, b, c, d, tx, ty) {
var a1 = this.a;
var b1 = this.b;
var c1 = this.c;
var d1 = this.d;
this.a = toFixed(a*a1+b*c1);
this.b = toFixed(a*b1+b*d1);
this.c = toFixed(c*a1+d*c1);
this.d = toFixed(c*b1+d*d1);
this.tx = toFixed(tx*a1+ty*c1+this.tx);
this.ty = toFixed(tx*b1+ty*d1+this.ty);
return this;
},
rotate: function( radian ) {
var cos = Math.cos(radian);
var sin = Math.sin(radian);
return this.cross(cos, sin, -sin, cos, 0, 0)
},
skew: function(sx, sy) {
return this.cross(1, Math.tan( sy ), Math.tan( sx ), 1, 0, 0);
},
skewX: function(radian){
return this.skew(radian, 0);
},
skewY: function(radian){
return this.skew(0, radian);
},
scale: function(x, y) {
return this.cross( toFloat(x, 1) ,0, 0, toFloat(y, 1), 0, 0)
},
scaleX: function(x){
return this.scale(x ,1);
},
scaleY: function(y){
return this.scale(1 ,y);
},
translate : function(x, y) {
return this.cross(1, 0, 0, 1, toFloat(x, 0), toFloat(y, 0))
},
translateX: function(x) {
return this.translate(x, 0);
},
translateY: function(y) {
return this.translate(0, y);
},
toString: function(){
return "matrix("+this.get()+")";
},
get: function(){
return [this.a,this.b,this.c,this.d,this.tx,this.ty];
},
set: function(a, b, c, d, tx, ty){
this.a = a * 1;
this.b = b * 1 || 0;
this.c = c * 1 || 0;
this.d = d * 1;
this.tx = tx * 1 || 0;
this.ty = ty * 1 || 0;
return this;
},
matrix:function(a, b, c, d, tx, ty){
return this.cross(a, b, c, d, toFloat(tx, 0), toFloat(ty, 0))
},
decompose: function() {
//分解原始数值,返回一个包含translateX,translateY,scale,skewX,rotate的对象
//https://github.com/louisremi/jquery.transform.js/blob/master/jquery.transform2d.js
//http://http://mxr.mozilla.org/mozilla-central/source/layout/style/nsStyleAnimation.cpp
var scaleX, scaleY, skew, A = this.a, B = this.b,C = this.c,D = this.d ;
if ( A * D - B * C ) {
// step (3)
scaleX = Math.sqrt( A * A + B * B );
A /= scaleX;
B /= scaleX;
// step (4)
skew = A * C + B * D;
C -= A * skew;
D -= B * skew;
// step (5)
scaleY = Math.sqrt( C * C + D * D );
C /= scaleY;
D /= scaleY;
skew /= scaleY;
// step (6)
if ( A * D < B * C ) {
A = -A;
B = -B;
skew = -skew;
scaleX = -scaleX;
}
} else {
scaleX = scaleY = skew = 0;
}
return [
["translate", [+this.tx, +this.ty]],
["rotate", Math.atan2(B, A)],
["skewX", Math.atan(skew)],
["scale", [scaleX, scaleY]]]
}
});
$.Matrix2D = Matrix2D
var getter = $.cssAdapter["_default:get"], RECT = "getBoundingClientRect",
//支持情况 ff3.5 chrome ie9 pp6 opara10.5 safari3.1
cssTransfrom = $.support.transform = $.cssName("transform");
if( cssTransfrom ){
adapter[cssTransfrom + ":set"] = function(node, name, value){
if(value.indexOf("matrix")!== -1 && cssTransfrom === "MozTransform"){
value = value.replace(/([\d.-]+)\s*,\s*([\d.-]+)\s*\)/,"$1px, $2px)")
}
node.style[name] = value;
var matrix = $._data( node, "matrix" ) || new Matrix2D();
matrix.set.apply(matrix, getter(node, cssTransfrom).match(/[-+.e\d]+/g).map(function(d){
return toFixed(d*1)
}));
$._data(node, "matrix", matrix );
}
}
//http://granular.cs.umu.se/browserphysics/?cat=7
//========================= 处理 user-select =========================
//https://developer.mozilla.org/en/CSS/-moz-user-select
//http://www.w3.org/TR/2000/WD-css3-userint-20000216#user-select
//具体支持情况可见下面网址
//http://help.dottoro.com/lcrlukea.php
var userSelect = $.cssName("userSelect");
if( userSelect ){
adapter[ userSelect+":set" ] = function( node, name, value ) {
return node.style[ name ] = value;
};
}
adapter[ "zIndex:get" ] = function( node, name, value, position ) {
while ( node.nodeType !== 9 ) {
//即使元素定位了，但如果zindex设置为"aaa"这样的无效值，浏览器都会返回auto，如果没有指定zindex值，IE会返回数字0，其他返回auto
position = $.css(node, "position" );
if ( position === "absolute" || position === "relative" || position === "fixed" ) {
// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
value = parseInt( adapter[ "_default:get" ](node,"zIndex"), 10 );
if ( !isNaN( value ) && value !== 0 ) {
return value;
}
}
node = node.parentNode;
}
return 0;
}
//http://extremelysatisfactorytotalitarianism.com/blog/?p=922
//http://someguynameddylan.com/lab/transform-origin-in-internet-explorer.php#matrix-anim-class
//========================= 处理 width height =========================
/**框架一般处在低层应用平台和高层业务逻辑之间的中间层。
// http://www.quirksmode.org/dom/w3c_cssom.html#t40
// clientWidth = node.style.width + padding
// https://developer.mozilla.org/en/DOM/element.clientWidth
// offsetWidth = node.style.width + padding + border
// https://developer.mozilla.org/en/DOM/element.offsetWidth
// getBoundingClientRect = node.style.width + padding + border
// https://developer.mozilla.org/en/DOM/element.getBoundingClientRect
// [CSS2.1 盒子模型] http://www.w3.org/TR/CSS2/box.html
// B-------border----------+ -> border
// | |
// | P----padding----+ | -> padding
// | | | |
// | | C-content-+ | | -> content
// | | | | | |
// | | | | | |
// | | +---------+ | |
// | | | |
// | +---------------+ |
// | |
// +-----------------------+
// B = event.offsetX/Y in WebKit
// event.layerX/Y in Gecko
// P = event.offsetX/Y in IE6 ~ IE8
// C = event.offsetX/Y in Opera
*/
var cssPair = {
Width:['Left', 'Right'],
Height:['Top', 'Bottom']
}
var cssShow = {
position: "absolute",
visibility: "hidden",
display: "block"
}
var showHidden = function(node, array){
if( node && node.nodeType == 1 && !node.offsetWidth ){
var obj = {
node: node
}
for (var name in cssShow ) {
obj[ name ] = node.style[ name ];
node.style[ name ] = cssShow[ name ];
}
array.push( obj );
if(!node.offsetWidth){//如果设置了offsetWidth还是为零，说明父节点也是隐藏元素，继续往上递归
showHidden(node.parentNode, array)
}
}
}
$.support.boxSizing = $.cssName( "boxSizing")
function getWH( node, name, extra ) {//注意 name是首字母大写
var getter = $.cssAdapter["_default:get"], which = cssPair[name], hidden = [];
showHidden( node, hidden );
var val = node["offset" + name]
//if($.support.boxSizing && $.css(node, "boxSizing" ) === "border-box" && extra == 0 ){ return val; }
//innerWidth = paddingWidth outerWidth = borderWidth, width = contentWidth
which.forEach(function(direction){
if(extra < 1)
val -= parseFloat(getter(node, 'padding' + direction)) || 0;
if(extra < 2)
val -= parseFloat(getter(node, 'border' + direction + 'Width')) || 0;
if(extra === 3){
val += parseFloat(getter(node, 'margin' + direction )) || 0;
}
});
for(var i = 0, obj; obj = hidden[i++];){
node = obj.node;
for ( name in obj ) {
if(typeof obj[ name ] == "string"){
node.style[ name ] = obj[ name ];
}
}
}
return val;
};
//生成width, height, innerWidth, innerHeight, outerWidth, outerHeight这六种原型方法
"Height,Width".replace( $.rword, function( name ) {
var lower = name.toLowerCase(),
clientProp = "client" + name,
scrollProp = "scroll" + name,
offsetProp = "offset" + name;
$.cssAdapter[ lower+":get" ] = function( node ){
return getWH( node, name, 0 ) + "px";//添加相应适配器
}
"inner_1,b_0,outer_2".replace(/(\w+)_(\d)/g,function(a, b, num){
var method = b == "b" ? lower : b + name;
$.fn[ method ] = function( value ) {
num = b == "outer" && value === true ? 3 : num;
return $.access( this, num, value, function( target, num, size ) {
if ( $.type( target,"Window" ) ) {//取得窗口尺寸
return target.document.documentElement[ clientProp ];
}
if ( target.nodeType === 9 ) {//取得页面尺寸
var doc = target.documentElement;
//IE6/IE7下，<html>的box-sizing默认值本就是border-box
if ( doc[ clientProp ] >= doc[ scrollProp ] ) {
return doc[ clientProp ];
}
return Math.max(
target.body[ scrollProp ], doc[ scrollProp ],
target.body[ offsetProp ], doc[ offsetProp ],
doc[ clientProp ]
);
} else if ( size === void 0 ) {
return getWH( target, name, num )
} else {
$.log(size)
return num > 0 ? this : $.css( target, lower, size );
}
}, this)
}
})
});
//=======================================================
//获取body的offset
function getBodyOffsetNoMargin(){
var el = document.body, ret = parseFloat($.css(el,"marginTop"))!== el.offsetTop;
function getBodyOffsetNoMargin(){
return ret;//一次之后的执行结果
}
return ret;//第一次执行结果
}
function setOffset(elem, options){
if(elem && elem.nodeType == 1 ){
var position = $.css( elem, "position" );
// set position first, in-case top/left are set even on static elem
if ( position === "static" ) {
elem.style.position = "relative";
}
var curElem = $( elem ),
curOffset = curElem.offset(),
curCSSTop = $.css( elem, "top" ),
curCSSLeft = $.css( elem, "left" ),
calculatePosition = ( position === "absolute" || position === "fixed" ) && [curCSSTop, curCSSLeft].indexOf("auto") > -1,
props = {}, curPosition = {}, curTop, curLeft;
// need to be able to calculate position if either top or left is auto and position is either absolute or fixed
if ( calculatePosition ) {
curPosition = curElem.position();
curTop = curPosition.top;
curLeft = curPosition.left;
} else {
curTop = parseFloat( curCSSTop ) || 0;
curLeft = parseFloat( curCSSLeft ) || 0;
}
if ( options.top != null ) {
props.top = ( options.top - curOffset.top ) + curTop;
}
if ( options.left != null ) {
props.left = ( options.left - curOffset.left ) + curLeft;
}
curElem.css( props );
}
}
$.fn.offset = function(options){//取得第一个元素位于页面的坐标
if ( arguments.length ) {
return (!options || ( !isFinite(options.top) && !isFinite(options.left) ) ) ? this :
this.each(function() {
setOffset( this, options );
});
}
var node = this[0], owner = node && node.ownerDocument, pos = {
left:0,
top:0
};
if ( !node || !owner ) {
return pos;
}
if( node.tagName === "BODY" ){
pos.top = node.offsetTop;
pos.left = body.offsetLeft;
//http://hkom.blog1.fc2.com/?mode=m&no=750 body的偏移量是不包含margin的
if(getBodyOffsetNoMargin()){
pos.top += parseFloat( getter(node, "marginTop") ) || 0;
pos.left += parseFloat( getter(node, "marginLeft") ) || 0;
}
return pos;
}else if ( $.html[ RECT ]) { //如果支持getBoundingClientRect
//我们可以通过getBoundingClientRect来获得元素相对于client的rect.
//http://msdn.microsoft.com/en-us/library/ms536433.aspx
var box = node[ RECT ](),win = getWindow(owner),
root = owner.documentElement,body = owner.body,
clientTop = root.clientTop || body.clientTop || 0,
clientLeft = root.clientLeft || body.clientLeft || 0,
scrollTop = win.pageYOffset || $.support.boxModel && root.scrollTop || body.scrollTop,
scrollLeft = win.pageXOffset || $.support.boxModel && root.scrollLeft || body.scrollLeft;
// 加上document的scroll的部分尺寸到left,top中。
// IE一些版本中会自动为HTML元素加上2px的border，我们需要去掉它
// http://msdn.microsoft.com/en-us/library/ms533564(VS.85).aspx
pos.top = box.top + scrollTop - clientTop,
pos.left = box.left + scrollLeft - clientLeft;
}
return pos;
}
"show,hide".replace($.rword, function(method){
$.fn[ method ] = function(){
return this.each(function(){
if(this.style){
this.style.display = method == "show" ? "" : "hide"
}
})
}
})
var rroot = /^(?:body|html)$/i;
$.implement({
position: function() {//取得元素相对于其offsetParent的坐标
var ret = this.offset(), node = this[0];
if ( node && node.nodeType ===1 ) {
var offsetParent = this.offsetParent(),
parentOffset = rroot.test(offsetParent[0].nodeName) ? {
top:0,
left:0
} : offsetParent.offset();
ret.top -= parseFloat( getter(node, "marginTop") ) || 0;
ret.left -= parseFloat( getter(node, "marginLeft") ) || 0;
parentOffset.top += parseFloat( getter(offsetParent[0], "borderTopWidth") ) || 0;
parentOffset.left += parseFloat( getter(offsetParent[0], "borderLeftWidth") ) || 0;
ret.top -= parentOffset.top;
ret.left -= parentOffset.left
}
return ret;
},
offsetParent: function() {
return this.map(function() {
var offsetParent = this.offsetParent || document.body;
while ( offsetParent && (!rroot.test(offsetParent.nodeName) && getter(offsetParent, "position") === "static") ) {
offsetParent = offsetParent.offsetParent;
}
return offsetParent;
});
},
scrollParent: function() {
var scrollParent;
if ((window.VBArray && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
scrollParent = this.parents().filter(function() {
return (/(relative|absolute|fixed)/).test($.css(this,'position')) && (/(auto|scroll)/).test($.css(this,'overflow')+$.css(this,'overflow-y')+$.css(this,'overflow-x'));
}).eq(0);
} else {
scrollParent = this.parents().filter(function() {
return (/(auto|scroll)/).test($.css(this,'overflow')+$.css(this,'overflow-y')+$.css(this,'overflow-x'));
}).eq(0);
}
return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
}
});
"Left,Top".replace( $.rword, function( name ) {
adapter[ name.toLowerCase() +":get"] = function(node){//添加top, left到cssAdapter
var val = getter(node, name.toLowerCase()), offset;
// 1. 当没有设置 style.left 时，getComputedStyle 在不同浏览器下，返回值不同
// 比如：firefox 返回 0, webkit/ie 返回 auto
// 2. style.left 设置为百分比时，返回值为百分比
// 对于第一种情况，如果是 relative 元素，值为 0. 如果是 absolute 元素，值为 offsetLeft - marginLeft
// 对于第二种情况，大部分类库都未做处理，属于“明之而不 fix”的保留 bug
if(val === "auto"){
val = 0;
if(/absolute|fixed/.test(getter(node,"position"))){
offset = node["offset"+name ];
// old-ie 下，elem.offsetLeft 包含 offsetParent 的 border 宽度，需要减掉
if (node.uniqueID && document.documentMode < 9 || window.opera) {
// 类似 offset ie 下的边框处理
// 如果 offsetParent 为 html ，需要减去默认 2 px == documentElement.clientTop
// 否则减去 borderTop 其实也是 clientTop
// http://msdn.microsoft.com/en-us/library/aa752288%28v=vs.85%29.aspx
// ie<9 注意有时候 elem.offsetParent 为 null ...
// 比如 DOM.append(DOM.create("<div class='position:absolute'></div>"),document.body)
offset -= node.offsetParent && node.offsetParent['client' + name] || 0;
}
val = offset - (parseInt(getter(node, 'margin' + name),10) || 0) +"px";
}
}
return val
};
var method = "scroll" + name;
$.fn[ method ] = function( val ) {
var node, win, t = name == "Top";
if ( val === void 0 ) {
node = this[ 0 ];
if ( !node ) {
return null;
}
win = getWindow( node );
// Return the scroll offset
return win ? ("pageXOffset" in win) ? win[ t ? "pageYOffset" : "pageXOffset" ] :
$.support.boxModel && win.document.documentElement[ method ] ||
win.document.body[ method ] :
node[ method ];
}
// Set the scroll offset
return this.each(function() {
win = getWindow( this );
if ( win ) {
win.scrollTo(
!t ? val : $( win ).scrollLeft(),
t ? val : $( win ).scrollTop()
);
} else {
this[ method ] = val;
}
});
};
});
var pseudoAdapter = window.VBArray && $.query && $.query.pseudoAdapter
if(pseudoAdapter){
pseudoAdapter.hidden = function( el ) {
return el.type === "hidden" || $.css( el, "display") === "none" ;
}
}
function getWindow( node ) {
return $.type(node,"Window") ? node : node.nodeType === 9 ? node.defaultView || node.parentWindow : false;
} ;
});
/**
2011.9.5将cssName改为隋性函数,修正msTransform Bug
2011.9.19 添加$.fn.offset width height innerWidth innerHeight outerWidth outerHeight scrollTop scrollLeft offset position
2011.9.20 v2
2011.10.10 重构position offset保持这两者行为一致，
2011.10.15 Fix $.css BUG 添加transform rotate API
2011.10.21 修正width height的BUG
2011.11.10 添加top,left到cssAdapter
2011.11.21 _all2deg,_all2rad,_toMatrixArray,_toMatrixObject放到命名空间之下，方便调用，简化transform逻辑
2012.3.2 getWH现在能获取多重隐藏元素的高宽了
2012.4.15 对zIndex进行适配,对$.css进行元素节点检测
2012.4.16 重构showHidden
2012.5.9 $.Matrix2D支持matrix方法，去掉rotate方法 css 升级到v3
2012.5.10 FIX toFloat BUG
2012.5.26 重构$.fn.width, $.fn.height,$.fn.innerWidth, $.fn.innerHeight, $.fn.outerWidth, $.fn.outerHeight
//本地模拟多个域名http://hi.baidu.com/fmqc/blog/item/07bdeefa75f2e0cbb58f3100.html
//z-index的最大值（各浏览器）http://hi.baidu.com/flondon/item/a64550ba98a9d3ef4ec7fd77
http://joeist.com/2012/06/what-is-the-highest-possible-z-index-value/ 这里有更全面的测试
http://boobstagram.fr/archive
ccs3 网站 http://hakim.se/experiments
*/