internal/notesium/web/app/pane.js drove the sidebar/pane resize
via mousedown + window-level mousemove/mouseup, which doesn't
fire on touch (browsers only emulate mouse for taps, not drags).
Replaced with pointer events:
- @pointerdown on the handle (covers mouse, touch, pen).
- setPointerCapture so we keep receiving pointermove/pointerup
events when the pointer drifts off the handle. This eliminates
the need for document-level listeners and avoids stuck-drag
states when the user releases outside the window.
- pointermove + pointerup + pointercancel listeners on the
captured target only — when the capture ends they're removed
regardless of whether the user is still on top of the handle.
- Filter on event.pointerId so a second simultaneous touch
(e.g., a multi-finger gesture) cannot hijack the in-progress
resize.
- event.button !== 0 guard rejects right-click / middle-click.
- touch-action: none on the handle so the browser doesn't try
to interpret a horizontal drag as a page scroll.
CodeMirror's internal mousedown handlers in note.js / preview.js
are left alone — those are link-click guards, not drags, and
CodeMirror's own pointer support handles touch internally.
Closes#20.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
libretechandClaude Opus 4.7
4e3f8de421