calendar font color

[julio1501]

Font color on the calender always stays white, even if the background is bright

[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