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FIX Detection of color brightness

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This commit is contained in:
Laurent Destailleur 2017-03-29 10:34:33 +02:00
parent e416ea275e
commit 4fa5448aab
1 changed files with 16 additions and 4 deletions
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20
htdocs/core/class/html.formother.class.php
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@ -604,10 +604,22 @@ class FormOther
$textcolor='FFF'; $textcolor='FFF';
if ($color) if ($color)
{ {
$hex=$color; $tmp=explode(',', $color);
$r = hexdec($hex[0].$hex[1]); if (count($tmp) > 1) // This is a comma RGB ('255','255','255')
$g = hexdec($hex[2].$hex[3]); {
$b = hexdec($hex[4].$hex[5]); $r = $tmp[0];
$g = $tmp[1];
$b = $tmp[2];
}
else
{
$hexr=$color[0].$color[1];
$hexg=$color[2].$color[3];
$hexb=$color[4].$color[5];
$r = hexdec($hexr);
$g = hexdec($hexg);
$b = hexdec($hexb);
}
$bright = (max($r, $g, $b) + min($r, $g, $b)) / 510.0; // HSL algorithm $bright = (max($r, $g, $b) + min($r, $g, $b)) / 510.0; // HSL algorithm
if ($bright > 0.6) $textcolor='000'; if ($bright > 0.6) $textcolor='000';
} }