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/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import {
amountFractionalBase,
amountFractionalLength,
AmountJson,
Amounts,
AmountString,
} from "@gnu-taler/taler-util";
import { Fragment, h, VNode } from "preact";
export function Amount({
value,
maxFracSize,
negative,
hideCurrency,
signType = "standard",
signDisplay = "auto",
}: {
negative?: boolean;
value: AmountJson | AmountString;
maxFracSize?: number;
hideCurrency?: boolean;
signType?: "accounting" | "standard";
signDisplay?: "auto" | "always" | "never" | "exceptZero";
}): VNode {
const aj = Amounts.jsonifyAmount(value);
const minFractional =
maxFracSize !== undefined && maxFracSize < 2 ? maxFracSize : 2;
const af = aj.fraction % amountFractionalBase;
let s = "";
if ((af && maxFracSize) || minFractional > 0) {
s += ".";
let n = af;
for (
let i = 0;
(maxFracSize === undefined || i < maxFracSize) &&
i < amountFractionalLength;
i++
) {
if (!n && i >= minFractional) {
break;
}
s = s + Math.floor((n / amountFractionalBase) * 10).toString();
n = (n * 10) % amountFractionalBase;
}
}
const fontSize = 18;
const letterSpacing = 0;
const mult = 0.7;
return (
<span style={{ textAlign: "right", whiteSpace: "nowrap" }}>
<span
style={{
display: "inline-block",
fontFamily: "monospace",
fontSize,
}}
>
{negative ? (signType === "accounting" ? "(" : "-") : ""}
<span
style={{
display: "inline-block",
textAlign: "right",
fontFamily: "monospace",
fontSize,
letterSpacing,
}}
>
{aj.value}
</span>
<span
style={{
display: "inline-block",
width: !maxFracSize ? undefined : `${(maxFracSize + 1) * mult}em`,
textAlign: "left",
fontFamily: "monospace",
fontSize,
letterSpacing,
}}
>
{s}
{negative && signType === "accounting" ? ")" : ""}
</span>
</span>
{hideCurrency ? undefined : (
<Fragment>
<span>{aj.currency}</span>
</Fragment>
)}
</span>
);
}
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