1.0 KiB
1.0 KiB
M14-04C Status
status: done
task: Chromium mouse/touch/pen pointer identity and cancellation contract
updated: 2026-08-19 America/New_York
enablingTask: false
parityStateChange: false
Scope
The main-thread and Offscreen viewport paths now record a shared pointer observation for mouse,
touch, and pen input. Pointer identity, pressure, tilt, button/buttons and pointercancel are
preserved with bounded values; unknown pointer types and invalid IDs fail closed. Chromium production
events verified down/cancel pairs for all three pointer types. Firefox/WebKit are excluded.
Evidence
npm --prefix web run buildpassed.npm --prefix web run test:chromium-pointer-contractpassed: 2 protocol tests and real Chromium mouse/touch/pen down/cancel events.- Checker output:
chromium-pointer-ok types=mouse,touch,pen cancel=PASS execution=DISABLED next=M14-04D. npm --prefix web run typecheckandgit diff --checkpassed.
Next Task
M14-04D: Chromium IME composition guard for incomplete operators.