CesiumGS/cesium

ScreenSpaceEventHandler support for multiple KeyboardEventModifier keys at once

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#13,300 创建于 2026年3月13日

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 (3 条评论) (0 个反应) (0 位负责人)JavaScript (3,324 个派生)batch import
category - cameragood first issuetype - enhancement

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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]
)

贡献者指南

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.
技术栈
javascript
领域
frontend
议题类型
功能
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3
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清晰
前置要求
Understanding of Cesium event systemJavaScript
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65