H-M-H/Weylus

Stylus and touch support on windows

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#17 opened on Jun 15, 2020

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 (36 comments) (11 reactions) (0 assignees)Rust (4,546 stars) (166 forks)batch import
enhancementhelp wanted

Description

Right now only the mouse can be controlled, things like pressure or touch events are not handled. I do not run windows myself and thus will most likely not implement this, but if someone else is up to the task here is what needs to be done:

Implement the InputDevice trait: https://github.com/H-M-H/Weylus/blob/master/src/input/device.rs, send_event is called on every PointerEvent sent from the browser. The PointerEvent type is defined in https://github.com/H-M-H/Weylus/blob/master/src/protocol.rs. x and y coordinates of the events are normalized to a range between 0 and 1, have a look at https://github.com/H-M-H/Weylus/blob/master/ts/lib.ts.

Once a struct that implements this trait is done (should be in its own file in https://github.com/H-M-H/Weylus/blob/master/src/input/), it has to be instantiated in https://github.com/H-M-H/Weylus/blob/master/src/websocket.rs setup.

Probably useful:

Contributor guide

Tech stack
rust
Domain
desktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Rust programmingWindows API knowledgeTrait implementation in RustFamiliarity with Weylus codebase
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Implement the InputDevice trait for Windows by creating a new file in src/input/ (e.g., windows.rs) that uses winapi or winrt rs to handle pointer events from the browser. The send event method must convert PointerEvent from the protocol (src/protocol.rs) to Windows touch/stylus input using InjectTouchInput or similar. Follow the pattern of existing implementations in src/input/. Then instantiate the new struct in src/websocket.rs setup function. Test with a Windows machine.