w3c/csswg-drafts

[cssom-view] elementFromPoint etc need to be defined in terms of layout and visual viewports

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#1,378 建立於 2017年5月15日

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描述

https://www.w3.org/TR/cssom-view-1/#dom-document-elementfrompoint

elementFromPoint(), elementsFromPoint() and caretPositionFromPoint() need to define whether the arguments are relative to the layout or visual viewports. Other "client" coordinates are being defined as being in terms of the layout viewport (e.g. getBoundingClientRects(), getClientRects(), event.clientX/y [citation needed]).

The spec also needs to define whether the clipping to the the viewport uses the layout or visual viewports for clipping.

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技術棧
htmlcss
領域
documentation
議題類型
documentation
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4
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mostly clear
前置要求
CSSOM View specificationunderstanding of layout and visual viewports
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Review the CSSOM View specification sections on elementFromPoint, elementsFromPoint, and caretPositionFromPoint. Examine existing comments in the issue for proposed definitions. Consider how other 'client' coordinates are defined in terms of layout viewport. Propose text that clarifies whether arguments are relative to layout or visual viewports and whether clipping uses layout or visual viewports.