bumbu/svg-pan-zoom

preventMouseEventsDefault stops working on Chrome 73

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#331 建立於 2019年3月20日

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 (6 留言) (7 反應) (0 負責人)JavaScript (1,585 star) (383 fork)batch import
bughelp wanted

描述

Bug report

The option preventMouseEventsDefault disable scroll event, allowing wheel-zoom. With new Chrome 73 version: https://www.chromestatus.com/features/6662647093133312 they change to passive by default.

Expected behaviour

Zoom with mouse wheel without scrolling.

Actual behaviour

Mixed strange behaviour zoom+scroll.

Steps to reproduce the behaviour

  1. With Chrome/Chomium 73, go to demos, and open any.
  2. Resize your browser with a height < lion picture
  3. Use your mouse wheel over the picture

image

Configuration

貢獻者指南

技術棧
javascript
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Understanding of JavaScript event listenersKnowledge of passive event listeners
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。
50
研究方向
The issue is caused by Chrome 73 making event listeners passive by default. Investigate the library's handling of mouse wheel events, specifically where `preventMouseEventsDefault` is implemented. The fix likely involves adding `{ passive: false }` to the `addEventListener` call for the 'wheel' event. Check the source code for event registration, likely in a file handling mouse interactions. Test in Chrome 73+ to ensure zoom works without scrolling.