Util::invertTextColor() - Code Metrics - Inspection of "Merge pull request #30855 from nextcloud/psalm/the..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 3231b3...73e3d0 )

by John

created 2022-01-27 19:04 UTC

Util::invertTextColor() A

↳ Parent: Util

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	5
nc	2
nop	1
dl	0
loc	6
rs	10
c	0
b	0
f	0

<?php
/**
 * @copyright Copyright (c) 2016 Julius Härtl <[email protected]>
 *
 * @author Christoph Wurst <[email protected]>
 * @author Daniel Kesselberg <[email protected]>
 * @author Joas Schilling <[email protected]>
 * @author Julien Veyssier <[email protected]>
 * @author Julius Haertl <[email protected]>
 * @author Julius Härtl <[email protected]>
 * @author Michael Weimann <[email protected]>
 *
 * @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;

use OCP\App\AppPathNotFoundException;
use OCP\App\IAppManager;
use OCP\Files\IAppData;
use OCP\Files\NotFoundException;
use OCP\Files\SimpleFS\ISimpleFile;
use OCP\IConfig;

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;
	}

	/**
	 * Convert RGB to HSL
	 *
	 * Copied from cssphp, copyright Leaf Corcoran, licensed under MIT
	 *
	 * @param integer $red
	 * @param integer $green
	 * @param integer $blue
	 *
	 * @return array
	 */
	public function toHSL($red, $green, $blue) {
		$min = min($red, $green, $blue);
		$max = max($red, $green, $blue);
		$l = $min + $max;
		$d = $max - $min;

		if ((int) $d === 0) {
			$h = $s = 0;
		} else {
			if ($l < 255) {
				$s = $d / $l;
			} else {
				$s = $d / (510 - $l);
			}

			if ($red == $max) {
				$h = 60 * ($green - $blue) / $d;
			} elseif ($green == $max) {
				$h = 60 * ($blue - $red) / $d + 120;
			} else {
				$h = 60 * ($red - $green) / $d + 240;
			}
		}

		return [fmod($h, 360), $s * 100, $l / 5.1];
	}

	/**
	 * @param string $color rgb color value
	 * @return float
	 */
	public function calculateLuminance($color) {
		[$red, $green, $blue] = $this->hexToRGB($color);
		$hsl = $this->toHSL($red, $green, $blue);
		return $hsl[2] / 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 $color rgb color value
	 * @return int[]
	 * @psalm-return array{0: int, 1: int, 2: int}
	 */
	public function hexToRGB($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, 0, 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) {
		$radioButtonIcon = '<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16">' .
			'<path d="M8 1a7 7 0 0 0-7 7 7 7 0 0 0 7 7 7 7 0 0 0 7-7 7 7 0 0 0-7-7zm0 1a6 6 0 0 1 6 6 6 6 0 0 1-6 6 6 6 0 0 1-6-6 6 6 0 0 1 6-6zm0 2a4 4 0 1 0 0 8 4 4 0 0 0 0-8z" fill="'.$color.'"/></svg>';
		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');
				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';
	}
}


1			<?php
2			/**
3			* @copyright Copyright (c) 2016 Julius Härtl <[email protected]>
4			*
5			* @author Christoph Wurst <[email protected]>
6			* @author Daniel Kesselberg <[email protected]>
7			* @author Joas Schilling <[email protected]>
8			* @author Julien Veyssier <[email protected]>
9			* @author Julius Haertl <[email protected]>
10			* @author Julius Härtl <[email protected]>
11			* @author Michael Weimann <[email protected]>
12			*
13			* @license GNU AGPL version 3 or any later version
14			*
15			* This program is free software: you can redistribute it and/or modify
16			* it under the terms of the GNU Affero General Public License as
17			* published by the Free Software Foundation, either version 3 of the
18			* License, or (at your option) any later version.
19			*
20			* This program is distributed in the hope that it will be useful,
21			* but WITHOUT ANY WARRANTY; without even the implied warranty of
22			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23			* GNU Affero General Public License for more details.
24			*
25			* You should have received a copy of the GNU Affero General Public License
26			* along with this program. If not, see <http://www.gnu.org/licenses/>.
27			*
28			*/
29			namespace OCA\Theming;
30
31			use OCP\App\AppPathNotFoundException;
32			use OCP\App\IAppManager;
33			use OCP\Files\IAppData;
34			use OCP\Files\NotFoundException;
35			use OCP\Files\SimpleFS\ISimpleFile;
36			use OCP\IConfig;
37
38			class Util {
39
40			/** @var IConfig */
41			private $config;
42
43			/** @var IAppManager */
44			private $appManager;
45
46			/** @var IAppData */
47			private $appData;
48
49			/**
50			* Util constructor.
51			*
52			* @param IConfig $config
53			* @param IAppManager $appManager
54			* @param IAppData $appData
55			*/
56			public function __construct(IConfig $config, IAppManager $appManager, IAppData $appData) {
57			$this->config = $config;
58			$this->appManager = $appManager;
59			$this->appData = $appData;
60			}
61
62			/**
63			* @param string $color rgb color value
64			* @return bool
65			*/
66			public function invertTextColor($color) {
67			$l = $this->calculateLuma($color);
68			if ($l > 0.6) {
69			return true;
70			} else {
71			return false;
72			}
73			}
74
75			/**
76			* get color for on-page elements:
77			* theme color by default, grey if theme color is to bright
78			* @param string $color
79			* @param bool $brightBackground
80			* @return string
81			*/
82			public function elementColor($color, bool $brightBackground = true) {
83			$luminance = $this->calculateLuminance($color);
84
85			if ($brightBackground && $luminance > 0.8) {
86			// If the color is too bright in bright mode, we fall back to a darker gray
87			return '#aaaaaa';
88			}
89
90			if (!$brightBackground && $luminance < 0.2) {
91			// If the color is too dark in dark mode, we fall back to a brighter gray
92			return '#555555';
93			}
94
95			return $color;
96			}
97
98			/**
99			* Convert RGB to HSL
100			*
101			* Copied from cssphp, copyright Leaf Corcoran, licensed under MIT
102			*
103			* @param integer $red
104			* @param integer $green
105			* @param integer $blue
106			*
107			* @return array
108			*/
109			public function toHSL($red, $green, $blue) {
110			$min = min($red, $green, $blue);
111			$max = max($red, $green, $blue);
112			$l = $min + $max;
113			$d = $max - $min;
114
115			if ((int) $d === 0) {
116			$h = $s = 0;
117			} else {
118			if ($l < 255) {
119			$s = $d / $l;
120			} else {
121			$s = $d / (510 - $l);
122			}
123
124			if ($red == $max) {
125			$h = 60 * ($green - $blue) / $d;
126			} elseif ($green == $max) {
127			$h = 60 * ($blue - $red) / $d + 120;
128			} else {
129			$h = 60 * ($red - $green) / $d + 240;
130			}
131			}
132
133			return [fmod($h, 360), $s * 100, $l / 5.1];
134			}
135
136			/**
137			* @param string $color rgb color value
138			* @return float
139			*/
140			public function calculateLuminance($color) {
141			[$red, $green, $blue] = $this->hexToRGB($color);
142			$hsl = $this->toHSL($red, $green, $blue);
143			return $hsl[2] / 100;
144			}
145
146			/**
147			* @param string $color rgb color value
148			* @return float
149			*/
150			public function calculateLuma($color) {
151			[$red, $green, $blue] = $this->hexToRGB($color);
152			return (0.2126 * $red + 0.7152 * $green + 0.0722 * $blue) / 255;
153			}
154
155			/**
156			* @param string $color rgb color value
157			* @return int[]
158			* @psalm-return array{0: int, 1: int, 2: int}
159			*/
160			public function hexToRGB($color) {
161			$hex = preg_replace("/[^0-9A-Fa-f]/", '', $color);
162			if (strlen($hex) === 3) {
163			$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
164			}
165			if (strlen($hex) !== 6) {
166			return [0, 0, 0];
167			}
168			return [
169			hexdec(substr($hex, 0, 2)),
170			hexdec(substr($hex, 2, 2)),
171			hexdec(substr($hex, 4, 2))
172			];
173			}
174
175			/**
176			* @param $color
177			* @return string base64 encoded radio button svg
178			*/
179			public function generateRadioButton($color) {
180			$radioButtonIcon = '<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16">' .
181			'<path d="M8 1a7 7 0 0 0-7 7 7 7 0 0 0 7 7 7 7 0 0 0 7-7 7 7 0 0 0-7-7zm0 1a6 6 0 0 1 6 6 6 6 0 0 1-6 6 6 6 0 0 1-6-6 6 6 0 0 1 6-6zm0 2a4 4 0 1 0 0 8 4 4 0 0 0 0-8z" fill="'.$color.'"/></svg>';
182			return base64_encode($radioButtonIcon);
183			}
184
185
186			/**
187			* @param $app string app name
188			* @return string\|ISimpleFile path to app icon / file of logo
189			*/
190			public function getAppIcon($app) {
191			$app = str_replace(['\0', '/', '\\', '..'], '', $app);
192			try {
193			$appPath = $this->appManager->getAppPath($app);
194			$icon = $appPath . '/img/' . $app . '.svg';
195			if (file_exists($icon)) {
196			return $icon;
197			}
198			$icon = $appPath . '/img/app.svg';
199			if (file_exists($icon)) {
200			return $icon;
201			}
202			} catch (AppPathNotFoundException $e) {
			0 ignored issues – show Coding Style Comprehensibility introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report Consider adding a comment why this CATCH block is empty. Loading history...
203			}
204
205			if ($this->config->getAppValue('theming', 'logoMime', '') !== '') {
206			$logoFile = null;
			0 ignored issues – show Unused Code introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report The assignment to `$logoFile` is dead and can be removed. Loading history...
207			try {
208			$folder = $this->appData->getFolder('images');
209			return $folder->getFile('logo');
210			} catch (NotFoundException $e) {
			0 ignored issues – show Coding Style Comprehensibility introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report Consider adding a comment why this CATCH block is empty. Loading history...
211			}
212			}
213			return \OC::$SERVERROOT . '/core/img/logo/logo.svg';
214			}
215
216			/**
217			* @param $app string app name
218			* @param $image string relative path to image in app folder
219			* @return string\|false absolute path to image
220			*/
221			public function getAppImage($app, $image) {
222			$app = str_replace(['\0', '/', '\\', '..'], '', $app);
223			$image = str_replace(['\0', '\\', '..'], '', $image);
224			if ($app === "core") {
225			$icon = \OC::$SERVERROOT . '/core/img/' . $image;
226			if (file_exists($icon)) {
227			return $icon;
228			}
229			}
230
231			try {
232			$appPath = $this->appManager->getAppPath($app);
233			} catch (AppPathNotFoundException $e) {
234			return false;
235			}
236
237			$icon = $appPath . '/img/' . $image;
238			if (file_exists($icon)) {
239			return $icon;
240			}
241			$icon = $appPath . '/img/' . $image . '.svg';
242			if (file_exists($icon)) {
243			return $icon;
244			}
245			$icon = $appPath . '/img/' . $image . '.png';
246			if (file_exists($icon)) {
247			return $icon;
248			}
249			$icon = $appPath . '/img/' . $image . '.gif';
250			if (file_exists($icon)) {
251			return $icon;
252			}
253			$icon = $appPath . '/img/' . $image . '.jpg';
254			if (file_exists($icon)) {
255			return $icon;
256			}
257
258			return false;
259			}
260
261			/**
262			* replace default color with a custom one
263			*
264			* @param $svg string content of a svg file
265			* @param $color string color to match
266			* @return string
267			*/
268			public function colorizeSvg($svg, $color) {
269			$svg = preg_replace('/#0082c9/i', $color, $svg);
270			return $svg;
271			}
272
273			/**
274			* Check if a custom theme is set in the server configuration
275			*
276			* @return bool
277			*/
278			public function isAlreadyThemed() {
279			$theme = $this->config->getSystemValue('theme', '');
280			if ($theme !== '') {
281			return true;
282			}
283			return false;
284			}
285
286			public function isBackgroundThemed() {
287			$backgroundLogo = $this->config->getAppValue('theming', 'backgroundMime', '');
288			return $backgroundLogo !== '' && $backgroundLogo !== 'backgroundColor';
289			}
290			}
291

nextcloud / server

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Util::invertTextColor() A

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