Class TimeScale

Bound a pending zoom target without changing the displayed viewport.

Choose bar spacing so barCount bars fit the width, anchored at the right edge.

Alias of visibleRange() for naming parity with common charting APIs.

Logical index to x (media px), bar center.

Pan by a pixel delta. Positive dx drags chart content to the right (revealing older bars), matching a natural left-button drag.

Logical index of the latest bar; the right edge anchors to baseIndex+rightOffset.

Fired after changed navigation or any valid explicit range request; layout/data setters stay silent.

Set the visible logical range (best effort): pick a bar spacing so the span fills the width and anchor the right edge at range.to. Bar spacing is clamped to [min,max], so an extreme span lands at the nearest zoom. Fires the change handler so a host that mutates the scale directly still repaints.

Currently visible logical index range (fractional, unclamped to data).

x (media px) to fractional logical index.

Zoom around an anchor x (the cursor): change bar spacing by factor while keeping whatever logical index sits under focusX pinned there. factor > 1 zooms in (wider bars).