mapbox/mapbox-gl-js

[accessibility] Accessible target size for controls

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#11,037 opened on 2021年9月18日

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good first issue

説明

The WCAG 2.1 SC 2.5.5 Target Size requires targets for pointer input to be at least 44 by 44 in CSS pixels. Meeting this requirement has multiple benefits, it'd be great to pass this criteria for the commonly used controls:

  • Attribution control (mapboxgl-ctrl-attrib-button)
  • Popup close button (mapboxgl-popup-close-button)
  • Fullscreen control (mapboxgl-ctrl-fullscreen)
  • Location control (mapboxgl-ctrl-geolocate)
  • Markers (mapboxgl-marker)
  • Navigation controls:
    • Zoom in (mapboxgl-ctrl-zoom-in)
    • Zoom out (mapboxgl-ctrl-zoom-out)
    • Compass/reset bearing (mapboxgl-ctrl-compass)
  • etc.?

It may not be desirable to increase the size of the icons themselves, in which case padding can be used to increase the size of the tap targets.

コントリビューターガイド

技術スタック
javascriptcsshtml
領域
accessibility
Issue 種別
accessibility
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。
half day
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
CSSHTMLJavaScript
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。
70
調査方針
This issue asks to ensure that interactive controls in mapbox gl js meet WCAG 2.1 target size requirements by adding CSS padding to increase the tap target area to at least 44x44 CSS pixels. The controls identified include: attribution button, popup close button, fullscreen/geolocation controls, markers, and navigation zoom/compass buttons. Look for the control classes like 'mapboxgl ctrl attrib button', 'mapboxgl popup close button', etc. in the CSS source files (likely in 'src/css/'). Add padding to these elements while keeping the icon size unchanged. Test that the padding does not break layout. The issue has no linked PRs, so implementation is open. Review the WCAG understanding document linked in the issue for guidance.