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In IE6/7 quirks mode and\n // IE6 standards mode, this border can be overridden by setting the\n // document element's border to zero -- thus, we cannot rely on the\n // offset always being 2 pixels.\n // In quirks mode, the offset can be determined by querying the body's\n // clientLeft/clientTop, but in standards mode, it is found by querying\n // the document element's clientLeft/clientTop. Since we already called\n // getClientBoundingRect we have already forced a reflow, so it is not\n // too expensive just to query them all.\n // ie 下应该减去窗口的边框吧，毕竟默认 absolute 都是相对窗口定位的\n // 窗口边框标准是设 documentElement ,quirks 时设置 body\n // 最好禁止在 body 和 html 上边框 ，但 ie < 9 html 默认有 2px ，减去\n // 但是非 ie 不可能设置窗口边框，body html 也不是窗口 ,ie 可以通过 html,body 设置\n // 标准 ie 下 docElem.clientTop 就是 border-top\n // ie7 html 即窗口边框改变不了。永远为 2\n // 但标准 firefox/chrome/ie9 下 docElem.clientTop 是窗口边框，即使设了 border-top 也为 0\n\n x -= docElem.clientLeft || body.clientLeft || 0;\n y -= docElem.clientTop || body.clientTop || 0;\n return {\n left: x,\n top: y\n };\n}\n\nfunction getScroll(w, top) {\n var ret = w[\"page\".concat(top ? 'Y' : 'X', \"Offset\")];\n var method = \"scroll\".concat(top ? 'Top' : 'Left');\n\n if (typeof ret !== 'number') {\n var d = w.document; // ie6,7,8 standard mode\n\n ret = d.documentElement[method];\n\n if (typeof ret !== 'number') {\n // quirks mode\n ret = d.body[method];\n }\n }\n\n return ret;\n}\n\nfunction getScrollLeft(w) {\n return getScroll(w);\n}\n\nfunction getScrollTop(w) {\n return getScroll(w, true);\n}\n\nfunction getOffset(el) {\n var pos = getClientPosition(el);\n var doc = el.ownerDocument;\n var w = doc.defaultView || doc.parentWindow;\n pos.left += getScrollLeft(w);\n pos.top += getScrollTop(w);\n return pos;\n}\n/**\n * A crude way of determining if an object is a window\n * @member util\n */\n\n\nfunction isWindow(obj) {\n // must use == for ie8\n\n /* eslint eqeqeq:0 */\n return obj !== null && obj !== undefined && obj == obj.window;\n}\n\nfunction getDocument(node) {\n if (isWindow(node)) {\n return node.document;\n }\n\n if (node.nodeType === 9) {\n return node;\n }\n\n return node.ownerDocument;\n}\n\nfunction _getComputedStyle(elem, name, cs) {\n var computedStyle = cs;\n var val = '';\n var d = getDocument(elem);\n computedStyle = computedStyle || d.defaultView.getComputedStyle(elem, null); // https://github.com/kissyteam/kissy/issues/61\n\n if (computedStyle) {\n val = computedStyle.getPropertyValue(name) || computedStyle[name];\n }\n\n return val;\n}\n\nvar _RE_NUM_NO_PX = new RegExp(\"^(\".concat(RE_NUM, \")(?!px)[a-z%]+$\"), 'i');\n\nvar RE_POS = /^(top|right|bottom|left)$/;\nvar CURRENT_STYLE = 'currentStyle';\nvar RUNTIME_STYLE = 'runtimeStyle';\nvar LEFT = 'left';\nvar PX = 'px';\n\nfunction _getComputedStyleIE(elem, name) {\n // currentStyle maybe null\n // http://msdn.microsoft.com/en-us/library/ms535231.aspx\n var ret = elem[CURRENT_STYLE] && elem[CURRENT_STYLE][name]; // 当 width/height 设置为百分比时，通过 pixelLeft 方式转换的 width/height 值\n // 一开始就处理了! CUSTOM_STYLE.height,CUSTOM_STYLE.width ,cssHook 解决@2011-08-19\n // 在 ie 下不对，需要直接用 offset 方式\n // borderWidth 等值也有问题，但考虑到 borderWidth 设为百分比的概率很小，这里就不考虑了\n // From the awesome hack by Dean Edwards\n // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291\n // If we're not dealing with a regular pixel number\n // but a number that has a weird ending, we need to convert it to pixels\n // exclude left right for relativity\n\n if (_RE_NUM_NO_PX.test(ret) && !RE_POS.test(name)) {\n // Remember the original values\n var style = elem.style;\n var left = style[LEFT];\n var rsLeft = elem[RUNTIME_STYLE][LEFT]; // prevent flashing of content\n\n elem[RUNTIME_STYLE][LEFT] = elem[CURRENT_STYLE][LEFT]; // Put in the new values to get a computed value out\n\n style[LEFT] = name === 'fontSize' ? '1em' : ret || 0;\n ret = style.pixelLeft + PX; // Revert the changed values\n\n style[LEFT] = left;\n elem[RUNTIME_STYLE][LEFT] = rsLeft;\n }\n\n return ret === '' ? 'auto' : ret;\n}\n\nif (typeof window !== 'undefined') {\n getComputedStyleX = window.getComputedStyle ? _getComputedStyle : _getComputedStyleIE;\n}\n\nfunction getOffsetDirection(dir, option) {\n if (dir === 'left') {\n return option.useCssRight ? 'right' : dir;\n }\n\n return option.useCssBottom ? 'bottom' : dir;\n}\n\nfunction oppositeOffsetDirection(dir) {\n if (dir === 'left') {\n return 'right';\n } else if (dir === 'right') {\n return 'left';\n } else if (dir === 'top') {\n return 'bottom';\n } else if (dir === 'bottom') {\n return 'top';\n }\n} // 设置 elem 相对 elem.ownerDocument 的坐标\n\n\nfunction setLeftTop(elem, offset, option) {\n // set position first, in-case top/left are set even on static elem\n if (css(elem, 'position') === 'static') {\n elem.style.position = 'relative';\n }\n\n var presetH = -999;\n var presetV = -999;\n var horizontalProperty = getOffsetDirection('left', option);\n var verticalProperty = getOffsetDirection('top', option);\n var oppositeHorizontalProperty = oppositeOffsetDirection(horizontalProperty);\n var oppositeVerticalProperty = oppositeOffsetDirection(verticalProperty);\n\n if (horizontalProperty !== 'left') {\n presetH = 999;\n }\n\n if (verticalProperty !== 'top') {\n presetV = 999;\n }\n\n var originalTransition = '';\n var originalOffset = getOffset(elem);\n\n if ('left' in offset || 'top' in offset) {\n originalTransition = getTransitionProperty(elem) || '';\n setTransitionProperty(elem, 'none');\n }\n\n if ('left' in offset) {\n elem.style[oppositeHorizontalProperty] = '';\n elem.style[horizontalProperty] = \"\".concat(presetH, \"px\");\n }\n\n if ('top' in offset) {\n elem.style[oppositeVerticalProperty] = '';\n elem.style[verticalProperty] = \"\".concat(presetV, \"px\");\n } // force relayout\n\n\n forceRelayout(elem);\n var old = getOffset(elem);\n var originalStyle = {};\n\n for (var key in offset) {\n if (offset.hasOwnProperty(key)) {\n var dir = getOffsetDirection(key, option);\n var preset = key === 'left' ? presetH : presetV;\n var off = originalOffset[key] - old[key];\n\n if (dir === key) {\n originalStyle[dir] = preset + off;\n } else {\n originalStyle[dir] = preset - off;\n }\n }\n }\n\n css(elem, originalStyle); // force relayout\n\n forceRelayout(elem);\n\n if ('left' in offset || 'top' in offset) {\n setTransitionProperty(elem, originalTransition);\n }\n\n var ret = {};\n\n for (var _key in offset) {\n if (offset.hasOwnProperty(_key)) {\n var _dir = getOffsetDirection(_key, option);\n\n var _off = offset[_key] - originalOffset[_key];\n\n if (_key === _dir) {\n ret[_dir] = originalStyle[_dir] + _off;\n } else {\n ret[_dir] = originalStyle[_dir] - _off;\n }\n }\n }\n\n css(elem, ret);\n}\n\nfunction setTransform$1(elem, offset) {\n var originalOffset = getOffset(elem);\n var originalXY = getTransformXY(elem);\n var resultXY = {\n x: originalXY.x,\n y: originalXY.y\n };\n\n if ('left' in offset) {\n resultXY.x = originalXY.x + offset.left - originalOffset.left;\n }\n\n if ('top' in offset) {\n resultXY.y = originalXY.y + offset.top - originalOffset.top;\n }\n\n setTransformXY(elem, resultXY);\n}\n\nfunction setOffset(elem, offset, option) {\n if (option.ignoreShake) {\n var oriOffset = getOffset(elem);\n var oLeft = oriOffset.left.toFixed(0);\n var oTop = oriOffset.top.toFixed(0);\n var tLeft = offset.left.toFixed(0);\n var tTop = offset.top.toFixed(0);\n\n if (oLeft === tLeft && oTop === tTop) {\n return;\n }\n }\n\n if (option.useCssRight || option.useCssBottom) {\n setLeftTop(elem, offset, option);\n } else if (option.useCssTransform && getTransformName() in document.body.style) {\n setTransform$1(elem, offset);\n } else {\n setLeftTop(elem, offset, option);\n }\n}\n\nfunction each(arr, fn) {\n for (var i = 0; i < arr.length; i++) {\n fn(arr[i]);\n }\n}\n\nfunction isBorderBoxFn(elem) {\n return getComputedStyleX(elem, 'boxSizing') === 'border-box';\n}\n\nvar BOX_MODELS = ['margin', 'border', 'padding'];\nvar CONTENT_INDEX = -1;\nvar PADDING_INDEX = 2;\nvar BORDER_INDEX = 1;\nvar MARGIN_INDEX = 0;\n\nfunction swap(elem, options, callback) {\n var old = {};\n var style = elem.style;\n var name; // Remember the old values, and insert the new ones\n\n for (name in options) {\n if (options.hasOwnProperty(name)) {\n old[name] = style[name];\n style[name] = options[name];\n }\n }\n\n callback.call(elem); // Revert the old values\n\n for (name in options) {\n if (options.hasOwnProperty(name)) {\n style[name] = old[name];\n }\n }\n}\n\nfunction getPBMWidth(elem, props, which) {\n var value = 0;\n var prop;\n var j;\n var i;\n\n for (j = 0; j < props.length; j++) {\n prop = props[j];\n\n if (prop) {\n for (i = 0; i < which.length; i++) {\n var cssProp = void 0;\n\n if (prop === 'border') {\n cssProp = \"\".concat(prop).concat(which[i], \"Width\");\n } else {\n cssProp = prop + which[i];\n }\n\n value += parseFloat(getComputedStyleX(elem, cssProp)) || 0;\n }\n }\n }\n\n return value;\n}\n\nvar domUtils = {\n getParent: function getParent(element) {\n var parent = element;\n\n do {\n if (parent.nodeType === 11 && parent.host) {\n parent = parent.host;\n } else {\n parent = parent.parentNode;\n }\n } while (parent && parent.nodeType !== 1 && parent.nodeType !== 9);\n\n return parent;\n }\n};\neach(['Width', 'Height'], function (name) {\n domUtils[\"doc\".concat(name)] = function (refWin) {\n var d = refWin.document;\n return Math.max( // firefox chrome documentElement.scrollHeight< body.scrollHeight\n // ie standard mode : documentElement.scrollHeight> body.scrollHeight\n d.documentElement[\"scroll\".concat(name)], // quirks : documentElement.scrollHeight 最大等于可视窗口多一点？\n d.body[\"scroll\".concat(name)], domUtils[\"viewport\".concat(name)](d));\n };\n\n domUtils[\"viewport\".concat(name)] = function (win) {\n // pc browser includes scrollbar in window.innerWidth\n var prop = \"client\".concat(name);\n var doc = win.document;\n var body = doc.body;\n var documentElement = doc.documentElement;\n var documentElementProp = documentElement[prop]; // 标准模式取 documentElement\n // backcompat 取 body\n\n return doc.compatMode === 'CSS1Compat' && documentElementProp || body && body[prop] || documentElementProp;\n };\n});\n/*\n 得到元素的大小信息\n @param elem\n @param name\n @param {String} [extra] 'padding' : (css width) + padding\n 'border' : (css width) + padding + border\n 'margin' : (css width) + padding + border + margin\n */\n\nfunction getWH(elem, name, ex) {\n var extra = ex;\n\n if (isWindow(elem)) {\n return name === 'width' ? domUtils.viewportWidth(elem) : domUtils.viewportHeight(elem);\n } else if (elem.nodeType === 9) {\n return name === 'width' ? domUtils.docWidth(elem) : domUtils.docHeight(elem);\n }\n\n var which = name === 'width' ? ['Left', 'Right'] : ['Top', 'Bottom'];\n var borderBoxValue = name === 'width' ? elem.getBoundingClientRect().width : elem.getBoundingClientRect().height;\n var computedStyle = getComputedStyleX(elem);\n var isBorderBox = isBorderBoxFn(elem);\n var cssBoxValue = 0;\n\n if (borderBoxValue === null || borderBoxValue === undefined || borderBoxValue <= 0) {\n borderBoxValue = undefined; // Fall back to computed then un computed css if necessary\n\n cssBoxValue = getComputedStyleX(elem, name);\n\n if (cssBoxValue === null || cssBoxValue === undefined || Number(cssBoxValue) < 0) {\n cssBoxValue = elem.style[name] || 0;\n } // Normalize '', auto, and prepare for extra\n\n\n cssBoxValue = parseFloat(cssBoxValue) || 0;\n }\n\n if (extra === undefined) {\n extra = isBorderBox ? BORDER_INDEX : CONTENT_INDEX;\n }\n\n var borderBoxValueOrIsBorderBox = borderBoxValue !== undefined || isBorderBox;\n var val = borderBoxValue || cssBoxValue;\n\n if (extra === CONTENT_INDEX) {\n if (borderBoxValueOrIsBorderBox) {\n return val - getPBMWidth(elem, ['border', 'padding'], which);\n }\n\n return cssBoxValue;\n } else if (borderBoxValueOrIsBorderBox) {\n if (extra === BORDER_INDEX) {\n return val;\n }\n\n return val + (extra === PADDING_INDEX ? -getPBMWidth(elem, ['border'], which) : getPBMWidth(elem, ['margin'], which));\n }\n\n return cssBoxValue + getPBMWidth(elem, BOX_MODELS.slice(extra), which);\n}\n\nvar cssShow = {\n position: 'absolute',\n visibility: 'hidden',\n display: 'block'\n}; // fix #119 : https://github.com/kissyteam/kissy/issues/119\n\nfunction getWHIgnoreDisplay() {\n for (var _len = arguments.length, args = new Array(_len), _key2 = 0; _key2 < _len; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n var val;\n var elem = args[0]; // in case elem is window\n // elem.offsetWidth === undefined\n\n if (elem.offsetWidth !== 0) {\n val = getWH.apply(undefined, args);\n } else {\n swap(elem, cssShow, function () {\n val = getWH.apply(undefined, args);\n });\n }\n\n return val;\n}\n\neach(['width', 'height'], function (name) {\n var first = name.charAt(0).toUpperCase() + name.slice(1);\n\n domUtils[\"outer\".concat(first)] = function (el, includeMargin) {\n return el && getWHIgnoreDisplay(el, name, includeMargin ? MARGIN_INDEX : BORDER_INDEX);\n };\n\n var which = name === 'width' ? ['Left', 'Right'] : ['Top', 'Bottom'];\n\n domUtils[name] = function (elem, v) {\n var val = v;\n\n if (val !== undefined) {\n if (elem) {\n var computedStyle = getComputedStyleX(elem);\n var isBorderBox = isBorderBoxFn(elem);\n\n if (isBorderBox) {\n val += getPBMWidth(elem, ['padding', 'border'], which);\n }\n\n return css(elem, name, val);\n }\n\n return undefined;\n }\n\n return elem && getWHIgnoreDisplay(elem, name, CONTENT_INDEX);\n };\n});\n\nfunction mix(to, from) {\n for (var i in from) {\n if (from.hasOwnProperty(i)) {\n to[i] = from[i];\n }\n }\n\n return to;\n}\n\nvar utils = {\n getWindow: function getWindow(node) {\n if (node && node.document && node.setTimeout) {\n return node;\n }\n\n var doc = node.ownerDocument || node;\n return doc.defaultView || doc.parentWindow;\n },\n getDocument: getDocument,\n offset: function offset(el, value, option) {\n if (typeof value !== 'undefined') {\n setOffset(el, value, option || {});\n } else {\n return getOffset(el);\n }\n },\n isWindow: isWindow,\n each: each,\n css: css,\n clone: function clone(obj) {\n var i;\n var ret = {};\n\n for (i in obj) {\n if (obj.hasOwnProperty(i)) {\n ret[i] = obj[i];\n }\n }\n\n var overflow = obj.overflow;\n\n if (overflow) {\n for (i in obj) {\n if (obj.hasOwnProperty(i)) {\n ret.overflow[i] = obj.overflow[i];\n }\n }\n }\n\n return ret;\n },\n mix: mix,\n getWindowScrollLeft: function getWindowScrollLeft(w) {\n return getScrollLeft(w);\n },\n getWindowScrollTop: function getWindowScrollTop(w) {\n return getScrollTop(w);\n },\n merge: function merge() {\n var ret = {};\n\n for (var i = 0; i < arguments.length; i++) {\n utils.mix(ret, i < 0 || arguments.length <= i ? undefined : arguments[i]);\n }\n\n return ret;\n },\n viewportWidth: 0,\n viewportHeight: 0\n};\nmix(utils, domUtils);\n\n/**\n * 得到会导致元素显示不全的祖先元素\n */\n\nvar getParent = utils.getParent;\n\nfunction getOffsetParent(element) {\n if (utils.isWindow(element) || element.nodeType === 9) {\n return null;\n } // ie 这个也不是完全可行\n\n /*\n \n
\n 元素 6 高 100px 宽 50px
\n
\n
\n\n\n utils.offset(source, {\n left: newElRegion.left,\n top: newElRegion.top\n }, {\n useCssRight: align.useCssRight,\n useCssBottom: align.useCssBottom,\n useCssTransform: align.useCssTransform,\n ignoreShake: align.ignoreShake\n });\n return {\n points: points,\n offset: offset,\n targetOffset: targetOffset,\n overflow: newOverflowCfg\n };\n}\n/**\n * 2012-04-26 yiminghe@gmail.com\n * - 优化智能对齐算法\n * - 慎用 resizeXX\n *\n * 2011-07-13 yiminghe@gmail.com note:\n * - 增加智能对齐，以及大小调整选项\n **/\n\nfunction isOutOfVisibleRect(target, alwaysByViewport) {\n var visibleRect = getVisibleRectForElement(target, alwaysByViewport);\n var targetRegion = getRegion(target);\n return !visibleRect || targetRegion.left + targetRegion.width <= visibleRect.left || targetRegion.top + targetRegion.height <= visibleRect.top || targetRegion.left >= visibleRect.right || targetRegion.top >= visibleRect.bottom;\n}\n\nfunction alignElement(el, refNode, align) {\n var target = align.target || refNode;\n var refNodeRegion = getRegion(target);\n var isTargetNotOutOfVisible = !isOutOfVisibleRect(target, align.overflow && align.overflow.alwaysByViewport);\n return doAlign(el, refNodeRegion, align, isTargetNotOutOfVisible);\n}\n\nalignElement.__getOffsetParent = getOffsetParent;\nalignElement.__getVisibleRectForElement = getVisibleRectForElement;\n\n/**\n * `tgtPoint`: { pageX, pageY } or { clientX, clientY }.\n * If client position provided, will internal convert to page position.\n */\n\nfunction alignPoint(el, tgtPoint, align) {\n var pageX;\n var pageY;\n var doc = utils.getDocument(el);\n var win = doc.defaultView || doc.parentWindow;\n var scrollX = utils.getWindowScrollLeft(win);\n var scrollY = utils.getWindowScrollTop(win);\n var viewportWidth = utils.viewportWidth(win);\n var viewportHeight = utils.viewportHeight(win);\n\n if ('pageX' in tgtPoint) {\n pageX = tgtPoint.pageX;\n } else {\n pageX = scrollX + tgtPoint.clientX;\n }\n\n if ('pageY' in tgtPoint) {\n pageY = tgtPoint.pageY;\n } else {\n pageY = scrollY + tgtPoint.clientY;\n }\n\n var tgtRegion = {\n left: pageX,\n top: pageY,\n width: 0,\n height: 0\n };\n var pointInView = pageX >= 0 && pageX <= scrollX + viewportWidth && pageY >= 0 && pageY <= scrollY + viewportHeight; // Provide default target point\n\n var points = [align.points[0], 'cc'];\n return doAlign(el, tgtRegion, _objectSpread2({}, align, {\n points: points\n }), pointInView);\n}\n\nexport default alignElement;\nexport { alignElement, alignPoint };\n//# sourceMappingURL=index.js.map\n"],"sourceRoot":""}