Shimmer

Skeleton-style loading shimmer: text with a highlight band sweeping continuously left-to-right. Characters inside the band blend toward an accent colour; characters outside use the base style. Multi-line text is supported.

Constructor: NewShimmer(id, class string) *Shimmer

Defaults: bandWidth = 6, edgeWidth = 3, gradient = off (linear falloff). The animation is not started automatically — call Start(interval) to begin.

Methods

• SetText(s string) *Shimmer — replace text (split at \n); resets band position
• Text() string — current text
• SetBandWidth(n int) *Shimmer — core highlight width in columns (clamped to ≥ 1)
• SetEdgeWidth(n int) *Shimmer — gradient columns on each side of the core (0 = hard edge)
• SetGradient(on bool) *Shimmer — smooth cosine blending vs. stepped linear falloff
• Tick() — animation frame; advances the band by one column
• Start(interval time.Duration) — start animation (inherited from Animation)
• Stop() — stop and freeze in base style

Notes

Embeds Animation. Dispatches no events — pure display widget.

Style selectors: shimmer for the base text, shimmer/band for the highlight colour. The renderer interpolates between the two as the band passes.

Calling Stop() freezes the text mid-sweep. To restart, call Start(interval) again.