* * @author Christoph Wurst * @author Daniel Kesselberg * @author Joas Schilling * @author Julien Veyssier * @author Julius Haertl * @author Julius Härtl * @author Michael Weimann * * @license GNU AGPL version 3 or any later version * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see . * */ namespace OCA\Theming; use OCP\App\AppPathNotFoundException; use OCP\App\IAppManager; use OCP\Files\IAppData; use OCP\Files\NotFoundException; use OCP\Files\SimpleFS\ISimpleFile; use OCP\IConfig; use ScssPhp\ScssPhp\Compiler; class Util { /** @var IConfig */ private $config; /** @var IAppManager */ private $appManager; /** @var IAppData */ private $appData; /** * Util constructor. * * @param IConfig $config * @param IAppManager $appManager * @param IAppData $appData */ public function __construct(IConfig $config, IAppManager $appManager, IAppData $appData) { $this->config = $config; $this->appManager = $appManager; $this->appData = $appData; } /** * @param string $color rgb color value * @return bool */ public function invertTextColor($color) { $l = $this->calculateLuma($color); if ($l > 0.6) { return true; } else { return false; } } /** * get color for on-page elements: * theme color by default, grey if theme color is to bright * @param string $color * @param bool $brightBackground * @return string */ public function elementColor($color, bool $brightBackground = true) { $luminance = $this->calculateLuminance($color); if ($brightBackground && $luminance > 0.8) { // If the color is too bright in bright mode, we fall back to a darker gray return '#aaaaaa'; } if (!$brightBackground && $luminance < 0.2) { // If the color is too dark in dark mode, we fall back to a brighter gray return '#555555'; } return $color; } /** * @param string $color rgb color value * @return float */ public function calculateLuminance($color) { [$red, $green, $blue] = $this->hexToRGB($color); $compiler = new Compiler(); $hsl = $compiler->toHSL($red, $green, $blue); return $hsl[3] / 100; } /** * @param string $color rgb color value * @return float */ public function calculateLuma($color) { [$red, $green, $blue] = $this->hexToRGB($color); return (0.2126 * $red + 0.7152 * $green + 0.0722 * $blue) / 255; } /** * @param string $color rgb color value * @return int[] */ public function hexToRGB($color) { $hex = preg_replace("/[^0-9A-Fa-f]/", '', $color); if (strlen($hex) === 3) { $hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2]; } if (strlen($hex) !== 6) { return 0; } return [ hexdec(substr($hex, 0, 2)), hexdec(substr($hex, 2, 2)), hexdec(substr($hex, 4, 2)) ]; } /** * @param $color * @return string base64 encoded radio button svg */ public function generateRadioButton($color) { $radioButtonIcon = ''; return base64_encode($radioButtonIcon); } /** * @param $app string app name * @return string|ISimpleFile path to app icon / file of logo */ public function getAppIcon($app) { $app = str_replace(['\0', '/', '\\', '..'], '', $app); try { $appPath = $this->appManager->getAppPath($app); $icon = $appPath . '/img/' . $app . '.svg'; if (file_exists($icon)) { return $icon; } $icon = $appPath . '/img/app.svg'; if (file_exists($icon)) { return $icon; } } catch (AppPathNotFoundException $e) { } if ($this->config->getAppValue('theming', 'logoMime', '') !== '') { $logoFile = null; try { $folder = $this->appData->getFolder('images'); if ($folder !== null) { return $folder->getFile('logo'); } } catch (NotFoundException $e) { } } return \OC::$SERVERROOT . '/core/img/logo/logo.svg'; } /** * @param $app string app name * @param $image string relative path to image in app folder * @return string|false absolute path to image */ public function getAppImage($app, $image) { $app = str_replace(['\0', '/', '\\', '..'], '', $app); $image = str_replace(['\0', '\\', '..'], '', $image); if ($app === "core") { $icon = \OC::$SERVERROOT . '/core/img/' . $image; if (file_exists($icon)) { return $icon; } } try { $appPath = $this->appManager->getAppPath($app); } catch (AppPathNotFoundException $e) { return false; } $icon = $appPath . '/img/' . $image; if (file_exists($icon)) { return $icon; } $icon = $appPath . '/img/' . $image . '.svg'; if (file_exists($icon)) { return $icon; } $icon = $appPath . '/img/' . $image . '.png'; if (file_exists($icon)) { return $icon; } $icon = $appPath . '/img/' . $image . '.gif'; if (file_exists($icon)) { return $icon; } $icon = $appPath . '/img/' . $image . '.jpg'; if (file_exists($icon)) { return $icon; } return false; } /** * replace default color with a custom one * * @param $svg string content of a svg file * @param $color string color to match * @return string */ public function colorizeSvg($svg, $color) { $svg = preg_replace('/#0082c9/i', $color, $svg); return $svg; } /** * Check if a custom theme is set in the server configuration * * @return bool */ public function isAlreadyThemed() { $theme = $this->config->getSystemValue('theme', ''); if ($theme !== '') { return true; } return false; } public function isBackgroundThemed() { $backgroundLogo = $this->config->getAppValue('theming', 'backgroundMime', ''); return $backgroundLogo !== '' && $backgroundLogo !== 'backgroundColor'; } }