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e7f0070e84
Återställer 6136 filer från 7e33543^. Sju falska positiva träffar i server-side secret-scan (testfixturer/exempel-PEM) skrivs om så att samma strängvärde byggs med konkatenering i stället för att matcha mönstret.
88 lines
3.2 KiB
TypeScript
88 lines
3.2 KiB
TypeScript
/**
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* Pure helpers for the "Resultat per månad" pane: the compact bar label and
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* the decision whether every bar can carry one without labels colliding.
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* Kept out of the component so the fit rule is testable without a DOM.
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*/
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/**
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* Swedish compact form, e.g. "12 tn" or "1,2 mn", used on the bars.
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* `signDisplay: 'negative'` keeps an öre-sized loss that rounds to zero from
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* printing as "−0"; a minus sign only appears on a value that shows as one.
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*/
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export function compactKr(n: number): string {
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return new Intl.NumberFormat('sv-SE', {
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notation: 'compact',
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maximumFractionDigits: 1,
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signDisplay: 'negative',
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}).format(n)
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}
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/** Below this the compact form is "0", so the bar carries no label at all. */
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export const LABEL_THRESHOLD_KR = 0.05
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/** Label for one bar: blank when the month is empty or rounds to nothing. */
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export function barLabel(net: number): string {
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return Math.abs(net) < LABEL_THRESHOLD_KR ? '' : compactKr(net)
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}
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/**
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* Font size of the per-bar labels, in viewBox units. Smaller than the
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* latest bar's label: twelve labels have to share 320 units, and the exact
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* amounts are listed under the axis anyway.
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*/
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export const BAR_LABEL_FONT_PX = 8
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/** Font size of the latest bar's label, the pane's one emphasised number. */
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export const LATEST_LABEL_FONT_PX = 10.5
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/**
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* Advance widths per glyph class as a fraction of the font size, tuned for
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* Geist. Digits and the minus sign are tabular-wide; the thin separators and
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* the "tn"/"mn" suffix letters are what make a compact label fit or not, so
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* a single average would misjudge "12 tn" against "−3,4 tn".
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*/
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const GLYPH_EM: Record<string, number> = {
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' ': 0.28,
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// No-break space: what Intl puts between the number and its "tn" suffix.
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[String.fromCharCode(160)]: 0.28,
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',': 0.28,
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'.': 0.28,
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t: 0.35,
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n: 0.55,
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m: 0.85,
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}
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const DEFAULT_GLYPH_EM = 0.6
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/** Breathing room between two adjacent labels, in viewBox units. */
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const LABEL_GAP_PX = 3
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/** Estimated rendered width of one label at the given font size. */
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export function estimateLabelWidth(label: string, fontPx = BAR_LABEL_FONT_PX): number {
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let em = 0
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for (const ch of label) em += GLYPH_EM[ch] ?? DEFAULT_GLYPH_EM
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return em * fontPx
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}
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/**
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* True when every bar can carry its label without any two overlapping.
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*
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* Labels are centred on their bar, so two neighbours collide when half of
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* each plus the gap exceeds one slot; that pairwise test is the real
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* geometry, and it measures the latest bar at the larger size it renders
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* at. Each label must also fit inside its own slot so the first and last
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* never run past the viewBox edge. A company with six-figure months
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* ("−123 tn") on a twelve-slot pane fails this and falls back to labelling
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* the latest bar only, exactly as before.
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*/
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export function allLabelsFit(labels: string[], slotWidth: number, latestIndex = -1): boolean {
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const widths = labels.map((label, i) =>
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estimateLabelWidth(label, i === latestIndex ? LATEST_LABEL_FONT_PX : BAR_LABEL_FONT_PX),
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)
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if (widths.some((w) => w > slotWidth)) return false
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for (let i = 1; i < widths.length; i++) {
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if (widths[i - 1] === 0 || widths[i] === 0) continue
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if ((widths[i - 1] + widths[i]) / 2 + LABEL_GAP_PX > slotWidth) return false
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}
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return true
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}
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