linebender/druid

`request_anim_frame()` prevents redrawing in multi-window

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#2,339 建立於 2023年1月17日

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 (9 留言) (0 反應) (0 負責人)Rust (9,091 star) (567 fork)batch import
bughelp wanted

描述

I have a custom widget that has an animation. After opening two windows with it inside, I found only the focused one was redrawn. The other ones won't redraw even if there's a data change. After deleting request_anim_frame(), it would redraw if there's a data change, but as a result, it's impossible for me to update my animation. Why would this happen? Is multi-window simply just doesn't supports animation or are there any options for me to enable it?

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貢獻者指南

技術棧
rust
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。
1-2 days
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。
needs investigation
前置要求
Basic knowledge of RustFamiliarity with druid's Widget trait
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
Investigate the druid source code, particularly the windowing and animation scheduling logic in src/win handler.rs and src/widget/widget.rs. Examine how request anim frame() interacts with multiple windows. The user reports that removing the call fixes redrawing for data changes but breaks animation. Look for any window specific state that might cause animation requests to be ignored for unfocused windows. Check if there is a known limitation or bug in the multi window support. Review comments in the issue for any clues from maintainers.
`request_anim_frame()` prevents redrawing in multi-window · linebender/druid#2339 | Good First Issue