calendar font color about dashboard

[tuxedo-rb]

Hello julio1501,

I played a bit with the luminance calculation based on the luminance code snipped from
https://hacks.mozilla.org/2018/07/dark-theme-darkening-better-theming-for-firefox-quantum/
over the weekend.

Open following file in a text editor ./dashboard/lib/Controller/CalendarController.php
and replace the whole foreach loop code (line number 138 until line number 150) with following code:

		foreach ($calendars as $calendar) {
			// luminance threshold source: https://hacks.mozilla.org/2018/07/dark-theme-darkening-better-theming-for-firefox-quantum/
			$lum = 141.0000;
			$lumThreshold = 140.0000;
			$calBackgroundColor = $calendar['{http://apple.com/ns/ical/}calendar-color'];
			if(!isset($calBackgroundColor)) {
				$calBackgroundColor = '#3A87AD'; // standard background color of private events
			}
			// six digit hex notation?
			if (preg_match('/^[#]([0-9A-F]){6}$/i', $calBackgroundColor) === 1) {
				$rColorInt = hexdec(substr($calBackgroundColor, 1, 2));
				$gColorInt = hexdec(substr($calBackgroundColor, 3, 2));
				$bColorInt = hexdec(substr($calBackgroundColor, 5, 2));
				$lum = (0.2125 * $rColorInt) + (0.7154 * $gColorInt) + (0.0721 * $bColorInt);
			}
			$textColor = '#FFFFFF'; // white font color
			// $lum values over 140 will be classified as bright background color
			if ($lum > $lumThreshold) {
				$textColor = '#000000'; // black font color
			}
			$eventSources[] = [
				'url' => $this->urlGenerator->linkToRoute(
					'dashboard.calendar.get_events',
					['calendarid' => $calendar['id']]
				),
				'backgroundColor' => $calendar['{http://apple.com/ns/ical/}calendar-color'],
				'borderColor'     => '#888',
				'textColor'       => $textColor,
				'cache'           => true,
			];
		}

I increased the overall threshold value from 110 to 140.
Tune the overall value if it doesn't hit your taste, or experiment with the rgb multipier values.

[julio1501]

Hello @tuxedo-rb ,

thanks! It´s perfect

[ArtificialOwl]

fixed using tuxedo-rb's patch