signal-desktop/ts/util/getCustomColorStyle.ts
2021-05-28 09:15:17 -07:00

53 lines
1.3 KiB
TypeScript

// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import { CustomColorType } from '../types/Colors';
import { ThemeType } from '../types/Util';
import { getHSL } from './getHSL';
import { getUserTheme } from '../shims/getUserTheme';
type ExtraQuotePropsType = {
borderLeftColor?: string;
};
type BackgroundPropertyType =
| { backgroundColor: string }
| { backgroundImage: string }
| undefined;
export function getCustomColorStyle(
color?: CustomColorType,
isQuote = false
): BackgroundPropertyType {
if (!color) {
return undefined;
}
const extraQuoteProps: ExtraQuotePropsType = {};
let adjustedLightness = 0;
if (isQuote) {
const theme = getUserTheme();
if (theme === ThemeType.light) {
adjustedLightness = 0.6;
}
if (theme === ThemeType.dark) {
adjustedLightness = -0.4;
}
extraQuoteProps.borderLeftColor = getHSL(color.start);
}
if (!color.end) {
return {
...extraQuoteProps,
backgroundColor: getHSL(color.start, adjustedLightness),
};
}
return {
...extraQuoteProps,
backgroundImage: `linear-gradient(${270 - (color.deg || 0)}deg, ${getHSL(
color.start,
adjustedLightness
)}, ${getHSL(color.end, adjustedLightness)})`,
};
}