angular-ui/ui-grid

perf(refreshCanvas): Running too often?

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#2,139 创建于 2014年11月18日

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 (1 评论) (0 反应) (0 负责人)JavaScript (5,395 star) (2,496 fork)batch import
help wantedseverity: performance

描述

In pulling some simple CPU profiles it seems like a disproportionate amount of time is spent recalculating header heights when they haven't changed... There should be a way to skip this while scrolling as it's unneeded.

However we can't simply do the calculation once and be done because toggling grid options could theoretically alter header height.

贡献者指南

技术栈
javascriptangular
领域
frontend
议题类型
performance
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3
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half day
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stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
JavaScriptAngularJSUI Grid internals
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
35
研究方向
Investigate the refreshCanvas function to identify where header heights are recalculated. Implement caching or skip recalculation when heights haven't changed, but ensure that toggling grid options triggers update. Profile to verify improvement.