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<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
namespace Icinga\Util;
class Dimension
{
/**
* Defines this dimension as nr of pixels
*/
const UNIT_PX = "px";
/**
* Defines this dimension as width of 'M' in current font
*/
const UNIT_EM = "em";
/**
* Defines this dimension as a percentage value
*/
const UNIT_PERCENT = "%";
/**
* Defines this dimension in points
*/
const UNIT_PT = "pt";
/**
* The current set value for this dimension
*
* @var int
*/
private $value = 0;
/**
* The unit to interpret the value with
*
* @var string
*/
private $unit = self::UNIT_PX;
/**
* Create a new Dimension object with the given size and unit
*
* @param int $value The new value
* @param string $unit The unit to use (default: px)
*/
public function __construct($value, $unit = self::UNIT_PX)
{
$this->setValue($value, $unit);
}
/**
* Change the value and unit of this dimension
*
* @param int $value The new value
* @param string $unit The unit to use (default: px)
*/
public function setValue($value, $unit = self::UNIT_PX)
{
$this->value = intval($value);
$this->unit = $unit;
}
/**
* Return true when the value is > 0
*
* @return bool
*/
public function isDefined()
{
return $this->value > 0;
}
/**
* Return the underlying value without unit information
*
* @return int
*/
public function getValue()
{
return $this->value;
}
/**
* Return the unit used for the value
*
* @return string
*/
public function getUnit()
{
return $this->unit;
}
/**
* Return this value with it's according unit as a string
*
* @return string
*/
public function __toString()
{
if (!$this->isDefined()) {
return "";
}
return $this->value.$this->unit;
}
/**
* Create a new Dimension object from a string containing the numeric value and the dimension (e.g. 200px, 20%)
*
* @param $string The string to parse
*
* @return Dimension
*/
public static function fromString($string)
{
$matches = array();
if (!preg_match_all('/^ *([0-9]+)(px|pt|em|\%) */i', $string, $matches)) {
return new Dimension(0);
}
return new Dimension(intval($matches[1][0]), $matches[2][0]);
}
}
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