forked from mystiq/hydrogen-web
40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {offColor} from 'off-color';
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export function derive(value, operation, argument, isDark) {
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const argumentAsNumber = parseInt(argument);
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if (isDark) {
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// For dark themes, invert the operation
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if (operation === 'darker') {
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operation = "lighter";
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}
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else if (operation === 'lighter') {
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operation = "darker";
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}
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}
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switch (operation) {
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case "darker": {
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const newColorString = offColor(value).darken(argumentAsNumber / 100).hex();
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return newColorString;
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}
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case "lighter": {
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const newColorString = offColor(value).lighten(argumentAsNumber / 100).hex();
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return newColorString;
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}
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}
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}
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