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@ -2,7 +2,7 @@ |
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* 对DOM操作的通用函数 |
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* 对DOM操作的通用函数 |
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*/ |
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*/ |
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import $ from "jquery"; |
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import $ from "jquery"; |
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import { each, isEmpty, isNotNull, isNull } from "../2.base"; |
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import { each, isEmpty, isNotEmptyObject } from "../2.base"; |
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import { Widget } from "../4.widget"; |
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import { Widget } from "../4.widget"; |
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import { isIE } from "./../platform"; |
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import { isIE } from "./../platform"; |
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@ -102,23 +102,37 @@ export function getTextSizeHeight(text, fontSize = 12) { |
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} |
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} |
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// 获取滚动条的宽度，页面display: none时候获取到的为0
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// 获取滚动条的宽度，页面display: none时候获取到的为0
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let _scrollWidth = null; |
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const _scrollWidthMap = {}; |
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export function getScrollWidth(css) { |
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export function getScrollWidth(css) { |
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if (isNull(_scrollWidth) || isNotNull(css) || _scrollWidth === 0) { |
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/** |
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const ul = Widget._renderEngine.createElement("<div>").width(50).height(50) |
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* 指定 scrollbar-width: none; |
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* 支持的浏览器版本结果肯定为 0，无需重复计算 |
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*/ |
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const supportScrollWidth = 'scrollbarWidth' in document.documentElement.style; |
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const hasNoneScrollWidth = |
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supportScrollWidth && isNotEmptyObject(css) && [css["scrollbar-width"], css["scrollbarWidth"]].includes("none"); |
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const key = JSON.stringify(css) || "default"; |
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if (hasNoneScrollWidth) { |
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return 0; |
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} else if (!_scrollWidthMap[key]) { |
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const ul = Widget._renderEngine |
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.createElement("<div>") |
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.width(50) |
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.height(50) |
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.css({ |
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.css({ |
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position: "absolute", |
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position: "absolute", |
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top: "-9999px", |
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top: "-9999px", |
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overflow: "scroll", |
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overflow: "scroll", |
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...css |
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...css, |
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}) |
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}) |
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.appendTo("body"); |
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.appendTo("body"); |
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_scrollWidth = ul[0].offsetWidth - ul[0].clientWidth; |
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_scrollWidthMap[key] = ul[0].offsetWidth - ul[0].clientWidth; |
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ul.destroy(); |
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ul.destroy(); |
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} |
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} |
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return _scrollWidth; |
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return _scrollWidthMap[key]; |
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} |
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} |
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export function getImage(param, fillStyle, backgroundColor) { |
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export function getImage(param, fillStyle, backgroundColor) { |
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