mapbox / mapbox/mapbox-gl-js

Expose event for camera change

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#3,746 11 comments 0 reactions 0 assignees View on GitHub

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Dominant language
TypeScript
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Description

Our libraries [react-map-gl](https://github.com/uber/react-map-gl) and [deck.gl](https://github.com/uber/deck.gl) both use Mapbox GL as a controlled React component. All viewport states are synced with a data store. Currently there is no event that is:
- reliably fired for every camera change as a result of user interaction or flyTo()
- fired *before* update (a controlled component does not rerender until props change)

As a result, we have been implementing our own mouse/touch interaction in order to use Mapbox in a React/Redux paradigm. It would be nice if there is an event that we can subscribe to to dispatch requests for camera change.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the camera-change handling in mapbox-gl-js and the existing user-interaction and flyTo() event paths. Define an event that fires before controlled-component updates and covers both interaction and flyTo() changes. Done means React/Redux consumers can subscribe and dispatch camera-change requests without custom mouse/touch handling.

Written by the indexing model from the issue text.

Assessment

Tech stack
react, typescript
Domain
frontend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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