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