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296 lines
8 KiB
PHP
296 lines
8 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Daniel Kesselberg <mail@danielkesselberg.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Julien Veyssier <eneiluj@posteo.net>
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* @author Julius Haertl <jus@bitgrid.net>
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* @author Julius Härtl <jus@bitgrid.net>
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* @author Michael Weimann <mail@michael-weimann.eu>
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*
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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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*/
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namespace OCA\Theming;
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use OCP\App\AppPathNotFoundException;
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use OCP\App\IAppManager;
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use OCP\Files\IAppData;
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use OCP\Files\NotFoundException;
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use OCP\Files\SimpleFS\ISimpleFile;
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use OCP\IConfig;
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use OCP\IUserSession;
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use Mexitek\PHPColors\Color;
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class Util {
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private IConfig $config;
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private IAppManager $appManager;
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private IAppData $appData;
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private ImageManager $imageManager;
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public function __construct(IConfig $config, IAppManager $appManager, IAppData $appData, ImageManager $imageManager) {
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$this->config = $config;
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$this->appManager = $appManager;
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$this->appData = $appData;
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$this->imageManager = $imageManager;
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}
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/**
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* Should we invert the text on this background color?
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* @param string $color rgb color value
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* @return bool
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*/
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public function invertTextColor(string $color): bool {
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return $this->isBrightColor($color);
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}
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/**
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* Is this color too bright ?
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* @param string $color rgb color value
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* @return bool
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*/
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public function isBrightColor(string $color): bool {
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$l = $this->calculateLuma($color);
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if ($l > 0.6) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* get color for on-page elements:
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* theme color by default, grey if theme color is to bright
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* @param string $color
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* @param bool $brightBackground
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* @return string
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*/
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public function elementColor($color, bool $brightBackground = true) {
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$luminance = $this->calculateLuminance($color);
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if ($brightBackground && $luminance > 0.8) {
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// If the color is too bright in bright mode, we fall back to a darker gray
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return '#aaaaaa';
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}
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if (!$brightBackground && $luminance < 0.2) {
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// If the color is too dark in dark mode, we fall back to a brighter gray
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return '#8c8c8c';
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}
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return $color;
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}
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public function mix(string $color1, string $color2, int $factor): string {
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$color = new Color($color1);
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return '#' . $color->mix($color2, $factor);
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}
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public function lighten(string $color, int $factor): string {
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$color = new Color($color);
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return '#' . $color->lighten($factor);
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}
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public function darken(string $color, int $factor): string {
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$color = new Color($color);
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return '#' . $color->darken($factor);
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}
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/**
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* Convert RGB to HSL
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*
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* Copied from cssphp, copyright Leaf Corcoran, licensed under MIT
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*
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* @param int $red
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* @param int $green
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* @param int $blue
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*
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* @return float[]
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*/
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public function toHSL(int $red, int $green, int $blue): array {
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$color = new Color(Color::rgbToHex(['R' => $red, 'G' => $green, 'B' => $blue]));
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return array_values($color->getHsl());
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}
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/**
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* @param string $color rgb color value
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* @return float
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*/
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public function calculateLuminance(string $color): float {
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[$red, $green, $blue] = $this->hexToRGB($color);
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$hsl = $this->toHSL($red, $green, $blue);
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return $hsl[2];
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}
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/**
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* @param string $color rgb color value
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* @return float
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*/
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public function calculateLuma(string $color): float {
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[$red, $green, $blue] = $this->hexToRGB($color);
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return (0.2126 * $red + 0.7152 * $green + 0.0722 * $blue) / 255;
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}
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/**
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* @param string $color rgb color value
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* @return int[]
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* @psalm-return array{0: int, 1: int, 2: int}
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*/
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public function hexToRGB(string $color): array {
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$color = new Color($color);
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return array_values($color->getRgb());
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}
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/**
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* @param $color
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* @return string base64 encoded radio button svg
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*/
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public function generateRadioButton($color) {
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$radioButtonIcon = '<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16">' .
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'<path d="M8 1a7 7 0 0 0-7 7 7 7 0 0 0 7 7 7 7 0 0 0 7-7 7 7 0 0 0-7-7zm0 1a6 6 0 0 1 6 6 6 6 0 0 1-6 6 6 6 0 0 1-6-6 6 6 0 0 1 6-6zm0 2a4 4 0 1 0 0 8 4 4 0 0 0 0-8z" fill="'.$color.'"/></svg>';
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return base64_encode($radioButtonIcon);
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}
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/**
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* @param $app string app name
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* @return string|ISimpleFile path to app icon / file of logo
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*/
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public function getAppIcon($app) {
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$app = str_replace(['\0', '/', '\\', '..'], '', $app);
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try {
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$appPath = $this->appManager->getAppPath($app);
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$icon = $appPath . '/img/' . $app . '.svg';
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if (file_exists($icon)) {
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return $icon;
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}
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$icon = $appPath . '/img/app.svg';
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if (file_exists($icon)) {
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return $icon;
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}
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} catch (AppPathNotFoundException $e) {
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}
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if ($this->config->getAppValue('theming', 'logoMime', '') !== '') {
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$logoFile = null;
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try {
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$folder = $this->appData->getFolder('global/images');
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return $folder->getFile('logo');
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} catch (NotFoundException $e) {
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}
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}
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return \OC::$SERVERROOT . '/core/img/logo/logo.svg';
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}
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/**
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* @param $app string app name
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* @param $image string relative path to image in app folder
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* @return string|false absolute path to image
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*/
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public function getAppImage($app, $image) {
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$app = str_replace(['\0', '/', '\\', '..'], '', $app);
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$image = str_replace(['\0', '\\', '..'], '', $image);
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if ($app === "core") {
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$icon = \OC::$SERVERROOT . '/core/img/' . $image;
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if (file_exists($icon)) {
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return $icon;
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}
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}
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try {
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$appPath = $this->appManager->getAppPath($app);
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} catch (AppPathNotFoundException $e) {
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return false;
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}
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$icon = $appPath . '/img/' . $image;
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if (file_exists($icon)) {
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return $icon;
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}
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$icon = $appPath . '/img/' . $image . '.svg';
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if (file_exists($icon)) {
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return $icon;
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}
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$icon = $appPath . '/img/' . $image . '.png';
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if (file_exists($icon)) {
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return $icon;
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}
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$icon = $appPath . '/img/' . $image . '.gif';
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if (file_exists($icon)) {
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return $icon;
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}
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$icon = $appPath . '/img/' . $image . '.jpg';
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if (file_exists($icon)) {
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return $icon;
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}
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return false;
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}
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/**
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* replace default color with a custom one
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*
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* @param $svg string content of a svg file
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* @param $color string color to match
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* @return string
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*/
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public function colorizeSvg($svg, $color) {
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$svg = preg_replace('/#0082c9/i', $color, $svg);
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return $svg;
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}
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/**
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* Check if a custom theme is set in the server configuration
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*
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* @return bool
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*/
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public function isAlreadyThemed() {
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$theme = $this->config->getSystemValue('theme', '');
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if ($theme !== '') {
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return true;
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}
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return false;
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}
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public function isBackgroundThemed() {
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$backgroundLogo = $this->config->getAppValue('theming', 'backgroundMime', '');
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return $backgroundLogo !== '' && $backgroundLogo !== 'backgroundColor';
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}
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public function isLogoThemed() {
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return $this->imageManager->hasImage('logo')
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|| $this->imageManager->hasImage('logoheader');
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}
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public function getCacheBuster(): string {
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$userSession = \OC::$server->get(IUserSession::class);
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$userId = '';
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$user = $userSession->getUser();
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if (!is_null($user)) {
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$userId = $user->getUID();
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}
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$userCacheBuster = '';
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if ($userId) {
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$userCacheBusterValue = (int)$this->config->getUserValue($userId, 'theming', 'userCacheBuster', '0');
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$userCacheBuster = $userId . '_' . $userCacheBusterValue;
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}
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$systemCacheBuster = $this->config->getAppValue('theming', 'cachebuster', '0');
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return substr(sha1($userCacheBuster . $systemCacheBuster), 0, 8);
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}
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}
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