Refactor primary computation and fix a few missing theme parity variables

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/apps/theming/lib/Themes/CommonThemeTrait.php b/apps/theming/lib/Themes/CommonThemeTrait.php
new file mode 100644
index 00000000000..a7f7b407d2f
--- /dev/null
+++ b/apps/theming/lib/Themes/CommonThemeTrait.php
@@ -0,0 +1,65 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2022 Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @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 <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Theming\Themes;
+
+use OCA\Theming\Util;
+
+trait CommonThemeTrait {
+	public Util $util;
+
+	/**
+	 * Generate primary-related variables
+	 * This is shared between multiple themes because colorMainBackground and colorMainText
+	 * will change in between.
+	 */
+	protected function generatePrimaryVariables(string $colorMainBackground, string $colorMainText): array {
+		$colorPrimaryLight = $this->util->mix($this->primaryColor, $colorMainBackground, -80);
+		$colorPrimaryElement = $this->util->elementColor($this->primaryColor);
+		$colorPrimaryElementLight = $this->util->mix($colorPrimaryElement, $colorMainBackground, -80);
+
+		// primary related colours
+		return [
+			'--color-primary' => $this->primaryColor,
+			'--color-primary-text' => $this->util->invertTextColor($this->primaryColor) ? '#000000' : '#ffffff',
+			'--color-primary-hover' => $this->util->mix($this->primaryColor, $colorMainBackground, 60),
+			'--color-primary-light' => $colorPrimaryLight,
+			'--color-primary-light-text' => $this->primaryColor,
+			'--color-primary-light-hover' => $this->util->mix($colorPrimaryLight, $colorMainText, 90),
+			'--color-primary-text-dark' => $this->util->darken($this->util->invertTextColor($this->primaryColor) ? '#000000' : '#ffffff', 7),
+
+			// used for buttons, inputs...
+			'--color-primary-element' => $colorPrimaryElement,
+			'--color-primary-element-text' => $this->util->invertTextColor($colorPrimaryElement) ? '#000000' : '#ffffff',
+			'--color-primary-element-hover' => $this->util->mix($colorPrimaryElement, $colorMainBackground, 60),
+			'--color-primary-element-light' => $colorPrimaryElementLight,
+			'--color-primary-element-light-text' => $colorPrimaryElement,
+			'--color-primary-element-light-hover' => $this->util->mix($colorPrimaryElementLight, $colorMainText, 90),
+			'--color-primary-element-text-dark' => $this->util->darken($this->util->invertTextColor($colorPrimaryElement) ? '#000000' : '#ffffff', 7),
+
+			// to use like this: background-image: var(--gradient-primary-background);
+			'--gradient-primary-background' => 'linear-gradient(40deg, var(--color-primary) 0%, var(--color-primary-hover) 100%)',
+		];
+	}
+}