diff options
| author | Ferdinand Thiessen <opensource@fthiessen.de> | 2023-12-16 14:04:53 +0100 |
|---|---|---|
| committer | Eduardo Morales <emoral435@gmail.com> | 2023-12-19 10:20:33 -0600 |
| commit | 74f6995bdb6fa85426048ac87cea7ed94902686f (patch) | |
| tree | d5942987822f11324d1de2f93e13ff0c201ab8bf /apps/theming/lib/Util.php | |
| parent | 94a5e6c7b37765a4e8079ad945801a0a892dba04 (diff) | |
| download | nextcloud-server-74f6995bdb6fa85426048ac87cea7ed94902686f.tar.gz nextcloud-server-74f6995bdb6fa85426048ac87cea7ed94902686f.zip | |
fix(theming): Adjust dark high contrast to fulfill WCAG 2.1 AAA contrast
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>
Diffstat (limited to 'apps/theming/lib/Util.php')
| -rw-r--r-- | apps/theming/lib/Util.php | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/apps/theming/lib/Util.php b/apps/theming/lib/Util.php index c4f0123460e..71ab0a6dc6c 100644 --- a/apps/theming/lib/Util.php +++ b/apps/theming/lib/Util.php @@ -81,7 +81,7 @@ class Util { * @param ?bool $brightBackground * @return string */ - public function elementColor($color, ?bool $brightBackground = null, ?string $backgroundColor = null) { + public function elementColor($color, ?bool $brightBackground = null, ?string $backgroundColor = null, bool $highContrast = false) { if ($backgroundColor !== null) { $brightBackground = $brightBackground ?? $this->isBrightColor($backgroundColor); // Minimal amount that is possible to change the luminance @@ -93,7 +93,9 @@ class Util { $contrast = $this->colorContrast($color, $blurredBackground); // Min. element contrast is 3:1 but we need to keep hover states in mind -> min 3.2:1 - while ($contrast < 3.2 && $iteration++ < 100) { + $minContrast = $highContrast ? 5.5 : 3.2; + + while ($contrast < $minContrast && $iteration++ < 100) { $hsl = Color::hexToHsl($color); $hsl['L'] = max(0, min(1, $hsl['L'] + ($brightBackground ? -$epsilon : $epsilon))); $color = '#' . Color::hslToHex($hsl); |