d98c2bc926
Bumps [@nextcloud/eslint-config](https://github.com/nextcloud/eslint-config) from 5.1.0 to 6.0.0. - [Release notes](https://github.com/nextcloud/eslint-config/releases) - [Changelog](https://github.com/nextcloud/eslint-config/blob/master/CHANGELOG.md) - [Commits](https://github.com/nextcloud/eslint-config/compare/v5.1.0...v6.0.0) --- updated-dependencies: - dependency-name: "@nextcloud/eslint-config" dependency-type: direct:development update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>
94 lines
2.1 KiB
JavaScript
94 lines
2.1 KiB
JavaScript
/**
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* @copyright Copyright (c) 2018 Julius Härtl <jus@bitgrid.net>
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* @author Julius Härtl <jus@bitgrid.net>
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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export default {
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methods: {
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hexToRgb(hex) {
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const result = /^#?([A-Fa-f\d]{2})([A-Fa-f\d]{2})([A-Fa-f\d]{2})$/i.exec(hex)
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if (result) {
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return {
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r: parseInt(result[1], 16),
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g: parseInt(result[2], 16),
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b: parseInt(result[3], 16),
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}
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}
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return null
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},
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rgb2hls(rgb) {
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// RGB2HLS by Garry Tan
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// http://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c
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const r = rgb.r / 255
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const g = rgb.g / 255
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const b = rgb.b / 255
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const max = Math.max(r, g, b)
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const min = Math.min(r, g, b)
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let h
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let s
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const l = (max + min) / 2
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if (max === min) {
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h = s = 0 // achromatic
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} else {
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const d = max - min
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s = l > 0.5 ? d / (2 - max - min) : d / (max + min)
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switch (max) {
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case r:
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h = (g - b) / d + (g < b ? 6 : 0)
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break
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case g:
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h = (b - r) / d + 2
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break
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case b:
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h = (r - g) / d + 4
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break
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}
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h /= 6
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}
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return {
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h, l, s,
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}
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},
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textColor(hex) {
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const rgb = this.hexToRgb(hex)
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if (rgb === null) {
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return '#000000'
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}
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const { l } = this.rgb2hls(rgb)
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if (l < 0.5) {
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return '#ffffff'
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} else {
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return '#000000'
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}
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},
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colorIsValid(hex) {
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const re = /[A-Fa-f0-9]{6}/
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if (re.test(hex)) {
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return true
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}
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return false
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},
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},
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}
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