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{"version":3,"file":"index.js","sources":["../../src/util.js","../../src/index.js"],"sourcesContent":["const RE_NUM = /[\\-+]?(?:\\d*\\.|)\\d+(?:[eE][\\-+]?\\d+|)/.source;\n\nfunction getClientPosition(elem) {\n let box;\n let x;\n let y;\n const doc = elem.ownerDocument;\n const body = doc.body;\n const docElem = doc && doc.documentElement;\n // 根据 GBS 最新数据，A-Grade Browsers 都已支持 getBoundingClientRect 方法，不用再考虑传统的实现方式\n box = elem.getBoundingClientRect();\n\n // 注：jQuery 还考虑减去 docElem.clientLeft/clientTop\n // 但测试发现，这样反而会导致当 html 和 body 有边距/边框样式时，获取的值不正确\n // 此外，ie6 会忽略 html 的 margin 值，幸运地是没有谁会去设置 html 的 margin\n\n x = box.left;\n y = box.top;\n\n // In IE, most of the time, 2 extra pixels are added to the top and left\n // due to the implicit 2-pixel inset border. 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\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\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\n return {\n left: x,\n top: y,\n };\n}\n\nfunction getScroll(w, top) {\n let ret = w[`page${top ? 'Y' : 'X'}Offset`];\n const method = `scroll${top ? 'Top' : 'Left'}`;\n if (typeof ret !== 'number') {\n const d = w.document;\n // ie6,7,8 standard mode\n ret = d.documentElement[method];\n if (typeof ret !== 'number') {\n // quirks mode\n ret = d.body[method];\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 const pos = getClientPosition(el);\n const doc = el.ownerDocument;\n const w = doc.defaultView || doc.parentWindow;\n pos.left += getScrollLeft(w);\n pos.top += getScrollTop(w);\n return pos;\n}\nfunction _getComputedStyle(elem, name, computedStyle_) {\n let val = '';\n const d = elem.ownerDocument;\n const computedStyle =\n computedStyle_ || d.defaultView.getComputedStyle(elem, null);\n\n // https://github.com/kissyteam/kissy/issues/61\n if (computedStyle) {\n val = computedStyle.getPropertyValue(name) || computedStyle[name];\n }\n\n return val;\n}\n\nconst _RE_NUM_NO_PX = new RegExp(`^(${RE_NUM})(?!px)[a-z%]+$`, 'i');\nconst RE_POS = /^(top|right|bottom|left)$/;\nconst CURRENT_STYLE = 'currentStyle';\nconst RUNTIME_STYLE = 'runtimeStyle';\nconst LEFT = 'left';\nconst PX = 'px';\n\nfunction _getComputedStyleIE(elem, name) {\n // currentStyle maybe null\n // http://msdn.microsoft.com/en-us/library/ms535231.aspx\n let ret = elem[CURRENT_STYLE] && elem[CURRENT_STYLE][name];\n\n // 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 borderWi
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