信呼OA版本v2.3.8

include/chajian/colorChajian.php

@@ -0,0 +1,40 @@
+<?php 
+/**
+	颜色操作
+*/
+class colorChajian extends Chajian{
+
+	/**
+		颜色
+	*/
+	public function color($color,$l=127.5)
+	{
+		$r=hexdec(substr($color,1,2));
+		$g=hexdec(substr($color,3,2));
+		$b=hexdec(substr($color,5));
+		$yb=127.5;
+		if($l > $yb){
+			$l = $l - $yb;
+			$r = ($r * ($yb - $l) + 255 * $l) / $yb;
+			$g = ($g * ($yb - $l) + 255 * $l) / $yb;
+			$b = ($b * ($yb - $l) + 255 * $l) / $yb;
+		}else{
+			$r = ($r * $l) / $yb;
+			$g = ($g * $l) / $yb;
+			$b = ($b * $l) / $yb;
+		}
+		$nr=$this->tohex($r);
+		$ng=$this->tohex($g);
+		$nb=$this->tohex($b);
+		return '#'.$nr.$ng.$nb;
+	}
+	
+	private function tohex($n)
+	{
+		$hexch = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F');
+		$n 	= round($n);
+		$l 	= $n % 16;
+		$h 	= floor(($n / 16)) % 16;
+		return ''.$hexch[$h].''.$hexch[$l].'';
+	}
+}