Changelog

All notable changes to ngx-gauge will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

NgxGaugeMarker.labelColor?: string — color used for a marker's label text. Defaults to the marker's color when omitted, so labels stay visible on dark themes and line markers no longer inherit whatever fillStyle happened to be set from a previously drawn marker. (#123, #145)

cap: 'round' now also rounds the outer ends of the background bar when thresholds are configured. Previously the segment loop forced lineCap: 'butt' so only the foreground value bar was rounded; the background ends stayed square. Two extra round-capped arcs are now stroked at the leading edge of the first range and the trailing edge of the last range, leaving inner segment joints untouched. (#127)
.reading-block and .reading-label no longer clip the top/bottom of tall digits. The default overflow changed from hidden to visible (and the now-inert text-overflow: ellipsis was removed). Consumers that prefer the old clip-with-ellipsis behaviour for long prepend/append text can restore it via a global style override (see CSS comment in gauge.css). (#100)

Crisp rendering on high-DPR (Retina) displays. The canvas backing store is now scaled by window.devicePixelRatio and the 2D context is pre-scaled so drawing routines continue to work in CSS-pixel coordinates. (#13, #156)
ngOnDestroy no longer throws a TypeError when the gauge is destroyed before ngAfterViewInit runs (e.g. route change during initial render). _clear is now null-guarded and _destroy is idempotent. (#87)
foregroundColor, backgroundColor, thresholds, and markers now refresh the canvas when their input bindings change. Color / threshold / marker only changes redraw synchronously and skip the entry animation, so theme switches don't re-run the 0 → value animation. (#97, #151)
value=0 with animate=true and cap='round' no longer renders a small rounded sliver at the minimum position; _drawFill now early-returns on a zero-length arc. (#150)
Updating max (or min) after value has changed no longer leaves the previous animation displacement baked into the next render. _oldChangeVal is reset to the current value when min or max change, and _create clamps the previous value to the active (min, max) bounds defensively. (#150)

Reactivity for thresholds / markers is identity-based. Replace the object reference (immutable update) when you want a redraw — in-place mutation is not detected, consistent with Angular's OnChanges lifecycle.
The retina fix changes the canvas backing-store size to size × dpr. The CSS dimensions are unchanged, so layout is unaffected; consumers reading canvas.width / canvas.height directly (e.g. for screenshotting) will see the device-scaled value.
Issue #85 (shrink type='semi' height to remove the empty band above the arc) is deferred to 14.0.0 since it changes the host element's height for existing consumers.

Repository housekeeping (invisible to npm consumers — no runtime/API impact):
- Aligned workspace layout with the standard Angular CLI library convention: demo app moved from apps/demo/ to projects/demo/, library barrel renamed public_api.ts → public-api.ts, polyfills inlined in angular.json as ["zone.js"], environments/ + fileReplacements removed, static assets moved to projects/demo/public/, manual enableProdMode() dropped (the application builder handles this automatically). (#200)
- Lint cleanup across the library and demo; lint is now gated in CI. (#199)
- Removed unused dead code and stale configuration. (#198)
- Added GitHub Actions CI workflow with Node 20/22 build & test matrix, plus Dependabot grouping for npm + Actions updates. (#193)

The compiled dist/ngx-gauge output is byte-identical to 13.1.0 except for one renamed sources entry in the .mjs.map file (public_api.ts → public-api.ts). Runtime behaviour is unchanged.
@Input types for thresholds and markers remain Object in this release; the corresponding type-tightening change is bundled with the upcoming 14.0.0 modernization release alongside other breaking changes.

See the GitHub Releases page for the history of releases prior to 13.2.0.