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The previous pass approximated the reference with utility guesses (rounded-2xl, p-4, shadow-xl, dark ring). The actual spec is a hairline border ring composed with a soft 0 8px 24px drop shadow, 10px radius, 12x14 padding, and an 80ms left/top glide. Tailwind shadow utilities can't compose a ring with a custom drop shadow, so the surface moves into the design system as .chart-tooltip (theme-aware: dark swaps the ring to alpha-white and lets it carry the edge). Money/numeric figures also pick up the reference's mono treatment: font-mono + tabular-nums on every value across time-series, sankey, and goal-projection, so digits don't jitter while the scrubber moves.
39 lines
2.2 KiB
JavaScript
39 lines
2.2 KiB
JavaScript
// Single source of truth for the cursor-following tooltip used by the chart
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// controllers (time-series, sankey, and goal-projection once it lands from the
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// goals work). Keeping the visual contract here stops the bg / text / border /
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// privacy-sensitive classes from drifting apart across the controllers, the way
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// they had before (time-series was missing `text-primary` and `z-50`).
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//
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// This is the VISUAL contract only. Callers append their own behavioural
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// classes (initial `opacity-0`, `top-0`, …) or set them via inline styles,
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// because how each chart shows/hides and positions its tooltip differs.
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//
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// Not to be confused with DS::Tooltip — that is the info-icon hint primitive
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// (bg-inverse, aria-describedby, anchored to a static trigger). This is a
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// data-card surface created and updated inside D3 handler code.
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// The surface itself lives in the design system as `.chart-tooltip`
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// (sure-design-system/components.css): container bg, 10px radius, 12x14
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// padding, hairline ring composed with a soft 8/24 drop shadow, 80ms
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// left/top glide. It's a component class because Tailwind shadow utilities
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// can't compose a ring with a custom drop shadow. This constant adds the
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// behavioural classes shared by every chart tooltip.
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export const CHART_TOOLTIP_CLASSES =
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"chart-tooltip text-primary text-sm font-sans absolute pointer-events-none z-50 privacy-sensitive";
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// Content conventions (kept here so the controllers stay aligned):
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// - context line (date / node title): `text-xs text-secondary mb-1`
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// - money / numeric figures: mono + tabular so digits don't jitter while
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// the scrubber moves; secondary parentheticals in `text-secondary`
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export const CHART_TOOLTIP_CONTEXT_CLASSES = "text-xs text-secondary mb-1";
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export const CHART_TOOLTIP_VALUE_CLASSES = "font-mono font-medium tabular-nums";
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// Convenience factory for the raw-DOM idiom (no d3.select). Creates a hidden
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// tooltip div carrying the shared contract and appends it to `parent`.
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export function createChartTooltip(parent) {
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const tooltip = document.createElement("div");
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tooltip.className = CHART_TOOLTIP_CLASSES;
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tooltip.style.display = "none";
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parent.appendChild(tooltip);
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return tooltip;
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}
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