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 评论) (0 反应) (0 负责人)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]
)

贡献者指南

技术栈
javascript
领域
frontend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
active
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Understanding of Cesium event systemJavaScript
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
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