protected function colorSequence($hex, $background = false)
{
$rgb = ColorUtils::hex2rgb($hex);
$escSeq = "[" . ($background ? "48;" : "38;");
if ($this->colorDistanceAlgorithm !== 'none') {
$lab = ColorUtils::xyz2lab(ColorUtils::rgb2xyz(ColorUtils::normalizeRgb($rgb)));
$nearestColor = ColorUtils::nearestColor(self::$XTERM256COLOR, $lab, $this->colorDistanceAlgorithm, true, "xterm256color");
return $escSeq . "5;" . $nearestColor . "m";
}
return $escSeq . "2;" . implode(';', $rgb) . "m";
}
public function getBackgroundColour()
{
if (($col = $this->css->value('code', 'bgcolor', null)) !== null) {
if (preg_match('/^#[a-f0-9]{6}$/i', $col)) {
$rgb = ColorUtils::normalizeRgb(ColorUtils::hex2rgb($col), true);
}
array_map(function ($n) {
return round($n, 2);
}, $rgb);
$colStr = "{$rgb[0]}, {$rgb[1]}, {$rgb['2']}";
return "\\pagecolor[rgb]{{$colStr}}";
}
return "";
}