CesiumGS/cesium

ScreenSpaceEventHandler support for multiple KeyboardEventModifier keys at once

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#13,300 建立於 2026年3月13日

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 (3 留言) (0 反應) (0 負責人)JavaScript (11,758 star) (3,324 fork)batch import
category - cameragood first issuetype - enhancement

描述

Feature

Currently the ScreenSpaceEventHandler can only listen for mouse events with either Alt, Shift or Ctrl modifier keys.

It would be nice to be able to add a listener for when multiple modifier keys are held at the same time, like this:

const listener = () => {console.log("SHIFT and ALT are held")}

screenSpaceEventHandler.setInputAction(
  listener, 
  ScreenSpaceEventType.LEFT_DOWN, 
  [KeyboardEventModifier.ALT, KeyboardEventModifier.SHIFT]
)

貢獻者指南

技術棧
javascript
領域
frontend
議題類型
feature
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
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active
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Understanding of Cesium event systemJavaScript
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。
65
研究方向
Examine the ScreenSpaceEventHandler class in the Cesium source code, focusing on the setInputAction method where modifier keys are currently handled individually. The user requests the ability to pass an array of KeyboardEventModifier values. Review how the modifier state is checked during event dispatch and modify it to support multiple simultaneous modifiers. Check the comments in issue #13300 for any design considerations or maintainer feedback.
ScreenSpaceEventHandler support for multiple KeyboardEventModifier keys at once · CesiumGS/cesium#13300 | Good First Issue