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<?php
/** Libchart - PHP chart library
*
* Copyright (C) 2005-2006 Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/**
* Color
*
* @author Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*/
class Color
{
/**
* Creates a new color
*
* @access public
* @param integer red [0,255]
* @param integer green [0,255]
* @param integer blue [0,255]
* @param integer alpha [0,255]
*/
function Color($red, $green, $blue, $alpha = 0)
{
$this->red = (int)$red;
$this->green = (int)$green;
$this->blue = (int)$blue;
$this->alpha = (int)round($alpha * 127.0 / 255);
$this->gdColor = null;
}
/**
* Get GD color
*
* @access public
* @param $img GD image resource
*/
function getColor($img)
{
// Checks if color has already been allocated
if(!$this->gdColor)
{
if($this->alpha == 0 || !function_exists('imagecolorallocatealpha'))
$this->gdColor = imagecolorallocate($img, $this->red, $this->green, $this->blue);
else
$this->gdColor = imagecolorallocatealpha($img, $this->red, $this->green, $this->blue, $this->alpha);
}
// Returns GD color
return $this->gdColor;
}
}
?>
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