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<?php
/**
* Copyright (c) Andreas Heigl<andreas@heigl.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @author Andreas Heigl <a.heigl@wdv.de>
* @copyright Andreas Heigl
* @license http://www.opensource.org/licenses/mit-license.php MIT-License
*/
namespace Org_Heigl\Ghostscript\Device;
/**
* This class defines interfaces for the PNG-Driver family for Ghostscript
*
* @author Andreas Heigl <a.heigl@wdv.de>
* @copyright 2008-2009 Andreas Heigl
* @license http://www.opensource.org/licenses/mit-license.php MIT-License
*/
class Png implements DeviceInterface
{
/**
* Exactly what driver shall be used.
*
* This can be one of 'pngalpha', 'png16m', 'png256', 'png16', 'pnggray' or
* 'pngmono'
*
* @var string $device
*/
private $device = 'pngalpha';
/**
* The Background-Color of the PNG
*
* @var string $color
*/
private $color = null;
/**
* Get the name of the device as Ghostscript expects it
*
* @return string
*/
public function getDevice()
{
return $this->device;
}
/**
* Set the device
*
* It can be one of 'pngalpha', 'png16m', 'png256', 'png16', 'pnggray' or
* 'pngmono'.
*
* If the string does not match we use 'pngalpha' as default
*
* @param string $device
*
* @return Png
*/
public function setDevice($device)
{
$device = strtolower($device);
$devices = [
'pngalpha',
'png16m',
'png256',
'png16',
'pnggray',
'pngmono',
];
$this->device = 'pngalpha';
if (in_array($device, $devices)) {
$this->device = $device;
}
return $this;
}
/**
* Get the complete parameter string for this device
*
* @return string
*/
public function getParameterString()
{
$string = ' -sDEVICE=' . $this->getDevice();
if (('pngalpha' === $this->getDevice()) && (null !== $this->getBackgroundColor())) {
$string .= ' -dBackgroundColor=16#' . $this->getBackgroundColor();
}
return $string;
}
/**
* Set the Background-Color for the Alpha-PNG
*
* This can be any HEX-Color-definition WITHOUT the leading '#'
*
* @param string $color
*
* @return Png
*/
public function setBackgroundColor($color)
{
if (! preg_match('/^[a-fA-F0-9]{6}$/', $color)) {
$color = null;
}
$this->color = $color;
return $this;
}
/**
* Get the BackgroundColor
*
* @return string
*/
public function getBackgroundColor()
{
return $this->color;
}
/**
* Get the file ending
*
* @return string
*/
public function getFileEnding()
{
return 'png';
}
}
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