angular/components

CDK Overlay - Position Strategy with zoom css on parent

Open

#10,924 opened on 2018年4月19日

GitHub で見る
 (20 comments) (15 reactions) (0 assignees)TypeScript (24,044 stars) (6,650 forks)batch import
P4area: cdk/overlayhelp wanted

説明

Bug, feature request, or proposal:

If you are using the zoom CSS property to scale down UI elements the positioning of the CDK Overlay are calculated incorrectly.

What is the expected behavior?

Overlay positions properly as the non-zoomed styled div

What is the current behavior?

Overlay positions are calculated incorrectly when the zoom: 0.9 css property is on the parent container.

What are the steps to reproduce?

https://stackblitz.com/edit/cdk-overlay-zoom

What is the use-case or motivation for changing an existing behavior?

We have a Chrome only application that we use the zoom css property to scale down the UI. Using other methods of scaling does not work, so this is what we have to do.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Angular - 5.2.10 CDK - 5.2.5

コントリビューターガイド

技術スタック
typescriptcss
領域
frontend
Issue 種別
bug
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
1-2 days
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Angular CDKCSS zoomOverlay positioning
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
40
調査方針
The issue provides a StackBlitz reproduction (https://stackblitz.com/edit/cdk overlay zoom) demonstrating incorrect overlay positioning when parent has zoom CSS. Investigate the CDK overlay's position strategy calculation, specifically how it handles CSS zoom. Look at the overlay position strategy source code in the Angular components repository. The comments may contain insights from maintainers. A possible fix could involve accounting for the zoom factor when calculating overlay coordinates.