w3c/csswg-drafts

[cssom-view] API for final dimension / position of object-fit items

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#1,779 创建于 2017年9月5日

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描述

As it is now, there is no way to detect the final position and dimension of a object-fit element.

This is particularly problematic for things like canvas, where sometimes mapping mouse coordinates is needed.

Would it be possible for GetComputedStyle to return the top,right,bottom,left of the fit?

贡献者指南

技术栈
csshtmljavascript
领域
apifrontend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
over 1 week
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
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
CSS object fit propertyCSSOM specification
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。
15
研究方向
Investigate the CSSOM specification for element resize and position. Examine the object fit property's rendering algorithm to understand how final dimensions are computed. Review any existing proposals or use cases for exposing these coordinates. Consider how this could be implemented as an extension to getComputedStyle.