|
|
@@ -111,6 +111,136 @@ class AvatarController extends Controller { |
|
|
|
$this->timeFactory = $timeFactory; |
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
* @param int $r |
|
|
|
* @param int $g |
|
|
|
* @param int $b |
|
|
|
* @return double[] Array containing h s l in [0, 1] range |
|
|
|
*/ |
|
|
|
private function rgbToHsl($r, $g, $b) { |
|
|
|
$r /= 255.0; |
|
|
|
$g /= 255.0; |
|
|
|
$b /= 255.0; |
|
|
|
|
|
|
|
$max = max($r, $g, $b); |
|
|
|
$min = min($r, $g, $b); |
|
|
|
|
|
|
|
|
|
|
|
$h = ($max + $min) / 2.0; |
|
|
|
$l = ($max + $min) / 2.0; |
|
|
|
|
|
|
|
if($max === $min) { |
|
|
|
$h = $s = 0; // Achromatic |
|
|
|
} else { |
|
|
|
$d = $max - $min; |
|
|
|
$s = $l > 0.5 ? $d / (2 - $max - $min) : $d / ($max + $min); |
|
|
|
switch($max) { |
|
|
|
case $r: |
|
|
|
$h = ($g - $b) / $d + ($g < $b ? 6 : 0); |
|
|
|
break; |
|
|
|
case $g: |
|
|
|
$h = ($b - $r) / $d + 2.0; |
|
|
|
break; |
|
|
|
case $b: |
|
|
|
$h = ($r - $g) / $d + 4.0; |
|
|
|
break; |
|
|
|
} |
|
|
|
$h /= 6.0; |
|
|
|
} |
|
|
|
return [$h, $s, $l]; |
|
|
|
|
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* @param string $text |
|
|
|
* @return int[] Array containting r g b in the range [0, 255] |
|
|
|
*/ |
|
|
|
private function avatarBackgroundColor($text) { |
|
|
|
$hash = preg_replace('/[^0-9a-f]+/', '', $text); |
|
|
|
|
|
|
|
$hash = md5($hash); |
|
|
|
$hashChars = str_split($hash); |
|
|
|
|
|
|
|
|
|
|
|
// Init vars |
|
|
|
$result = ['0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0']; |
|
|
|
$rgb = [0, 0, 0]; |
|
|
|
$sat = 0.70; |
|
|
|
$lum = 0.68; |
|
|
|
$modulo = 16; |
|
|
|
|
|
|
|
|
|
|
|
// Splitting evenly the string |
|
|
|
foreach($hashChars as $i => $char) { |
|
|
|
$result[$i % $modulo] .= intval($char, 16); |
|
|
|
} |
|
|
|
|
|
|
|
// Converting our data into a usable rgb format |
|
|
|
// Start at 1 because 16%3=1 but 15%3=0 and makes the repartition even |
|
|
|
for($count = 1; $count < $modulo; $count++) { |
|
|
|
$rgb[$count%3] += (int)$result[$count]; |
|
|
|
} |
|
|
|
|
|
|
|
// Reduce values bigger than rgb requirements |
|
|
|
$rgb[0] %= 255; |
|
|
|
$rgb[1] %= 255; |
|
|
|
$rgb[2] %= 255; |
|
|
|
|
|
|
|
$hsl = $this->rgbToHsl($rgb[0], $rgb[1], $rgb[2]); |
|
|
|
|
|
|
|
// Classic formulla to check the brigtness for our eye |
|
|
|
// If too bright, lower the sat |
|
|
|
$bright = sqrt(0.299 * ($rgb[0] ** 2) + 0.587 * ($rgb[1] ** 2) + 0.114 * ($rgb[2] ** 2)); |
|
|
|
if ($bright >= 200) { |
|
|
|
$sat = 0.60; |
|
|
|
} |
|
|
|
|
|
|
|
return $this->hslToRgb($hsl[0], $sat, $lum); |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* @param double $h Heu in range [0, 1] |
|
|
|
* @param double $s Saturation in range [0, 1] |
|
|
|
* @param double $l Lightness in range [0, 1] |
|
|
|
* @return int[] Array containging r g b in the range [0, 255] |
|
|
|
*/ |
|
|
|
private function hslToRgb($h, $s, $l){ |
|
|
|
$hue2rgb = function ($p, $q, $t){ |
|
|
|
if($t < 0) { |
|
|
|
$t += 1; |
|
|
|
} |
|
|
|
if($t > 1) { |
|
|
|
$t -= 1; |
|
|
|
} |
|
|
|
if($t < 1/6) { |
|
|
|
return $p + ($q - $p) * 6 * $t; |
|
|
|
} |
|
|
|
if($t < 1/2) { |
|
|
|
return $q; |
|
|
|
} |
|
|
|
if($t < 2/3) { |
|
|
|
return $p + ($q - $p) * (2/3 - $t) * 6; |
|
|
|
} |
|
|
|
return $p; |
|
|
|
}; |
|
|
|
|
|
|
|
if($s == 0){ |
|
|
|
$r = $l; |
|
|
|
$g = $l; |
|
|
|
$b = $l; // achromatic |
|
|
|
}else{ |
|
|
|
$q = $l < 0.5 ? $l * (1 + $s) : $l + $s - $l * $s; |
|
|
|
$p = 2 * $l - $q; |
|
|
|
$r = $hue2rgb($p, $q, $h + 1/3); |
|
|
|
$g = $hue2rgb($p, $q, $h); |
|
|
|
$b = $hue2rgb($p, $q, $h - 1/3); |
|
|
|
} |
|
|
|
|
|
|
|
return array(round($r * 255), round($g * 255), round($b * 255)); |
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
* @NoAdminRequired |
|
|
|
* @NoCSRFRequired |
|
|
@@ -135,11 +265,31 @@ class AvatarController extends Controller { |
|
|
|
['Content-Type' => $avatar->getMimeType()]); |
|
|
|
} catch (NotFoundException $e) { |
|
|
|
$user = $this->userManager->get($userId); |
|
|
|
$resp = new JSONResponse([ |
|
|
|
'data' => [ |
|
|
|
'displayname' => $user->getDisplayName(), |
|
|
|
], |
|
|
|
]); |
|
|
|
$userDisplayName = $user->getDisplayName(); |
|
|
|
$text = strtoupper(substr($userDisplayName, 0, 1)); |
|
|
|
$backgroundColor = $this->avatarBackgroundColor($userDisplayName); |
|
|
|
|
|
|
|
$im = imagecreatetruecolor($size, $size); |
|
|
|
$background = imagecolorallocate($im, $backgroundColor[0], $backgroundColor[1], $backgroundColor[2]); |
|
|
|
$white = imagecolorallocate($im, 255, 255, 255); |
|
|
|
imagefilledrectangle($im, 0, 0, $size, $size, $background); |
|
|
|
|
|
|
|
$font = __DIR__ . '/../../core/fonts/OpenSans-Light.woff'; |
|
|
|
|
|
|
|
$fontSize = $size * 0.4; |
|
|
|
$box = imagettfbbox($fontSize, 0, $font, $text); |
|
|
|
|
|
|
|
$x = ($size - ($box[2] - $box[0])) / 2; |
|
|
|
$y = ($size - ($box[1] - $box[7])) / 2; |
|
|
|
$y -= $box[7]; |
|
|
|
imagettftext($im, $fontSize, 0, $x, $y, $white, $font, $text); |
|
|
|
|
|
|
|
header('Content-Type: image/png'); |
|
|
|
|
|
|
|
imagepng($im); |
|
|
|
imagedestroy($im); |
|
|
|
|
|
|
|
exit(); |
|
|
|
} catch (\Exception $e) { |
|
|
|
$resp = new JSONResponse([ |
|
|
|
'data' => [ |