Viewing file:  Size.php (3.36 KB) -rwxrwxrwx
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<?php
namespace Sabberworm\CSS\Value;
use Sabberworm\CSS\Parsing\ParserState;
class Size extends PrimitiveValue {
const ABSOLUTE_SIZE_UNITS = 'px/cm/mm/mozmm/in/pt/pc/vh/vw/vm/vmin/vmax/rem'; //vh/vw/vm(ax)/vmin/rem are absolute insofar as they don’t scale to the immediate parent (only the viewport)
const RELATIVE_SIZE_UNITS = '%/em/ex/ch/fr';
const NON_SIZE_UNITS = 'deg/grad/rad/s/ms/turns/Hz/kHz';
private static $SIZE_UNITS = null;
private $fSize;
private $sUnit;
private $bIsColorComponent;
public function __construct($fSize, $sUnit = null, $bIsColorComponent = false, $iLineNo = 0) {
parent::__construct($iLineNo);
$this->fSize = floatval($fSize);
$this->sUnit = $sUnit;
$this->bIsColorComponent = $bIsColorComponent;
}
public static function parse(ParserState $oParserState, $bIsColorComponent = false) {
$sSize = '';
if ($oParserState->comes('-')) {
$sSize .= $oParserState->consume('-');
}
while (is_numeric($oParserState->peek()) || $oParserState->comes('.')) {
if ($oParserState->comes('.')) {
$sSize .= $oParserState->consume('.');
} else {
$sSize .= $oParserState->consume(1);
}
}
$sUnit = null;
$aSizeUnits = self::getSizeUnits();
foreach($aSizeUnits as $iLength => &$aValues) {
$sKey = strtolower($oParserState->peek($iLength));
if(array_key_exists($sKey, $aValues)) {
if (($sUnit = $aValues[$sKey]) !== null) {
$oParserState->consume($iLength);
break;
}
}
}
return new Size(floatval($sSize), $sUnit, $bIsColorComponent, $oParserState->currentLine());
}
private static function getSizeUnits() {
if(self::$SIZE_UNITS === null) {
self::$SIZE_UNITS = array();
foreach (explode('/', Size::ABSOLUTE_SIZE_UNITS.'/'.Size::RELATIVE_SIZE_UNITS.'/'.Size::NON_SIZE_UNITS) as $val) {
$iSize = strlen($val);
if(!isset(self::$SIZE_UNITS[$iSize])) {
self::$SIZE_UNITS[$iSize] = array();
}
self::$SIZE_UNITS[$iSize][strtolower($val)] = $val;
}
// FIXME: Should we not order the longest units first?
ksort(self::$SIZE_UNITS, SORT_NUMERIC);
}
return self::$SIZE_UNITS;
}
public function setUnit($sUnit) {
$this->sUnit = $sUnit;
}
public function getUnit() {
return $this->sUnit;
}
public function setSize($fSize) {
$this->fSize = floatval($fSize);
}
public function getSize() {
return $this->fSize;
}
public function isColorComponent() {
return $this->bIsColorComponent;
}
/**
* Returns whether the number stored in this Size really represents a size (as in a length of something on screen).
* @return false if the unit an angle, a duration, a frequency or the number is a component in a Color object.
*/
public function isSize() {
if (in_array($this->sUnit, explode('/', self::NON_SIZE_UNITS))) {
return false;
}
return !$this->isColorComponent();
}
public function isRelative() {
if (in_array($this->sUnit, explode('/', self::RELATIVE_SIZE_UNITS))) {
return true;
}
if ($this->sUnit === null && $this->fSize != 0) {
return true;
}
return false;
}
public function __toString() {
return $this->render(new \Sabberworm\CSS\OutputFormat());
}
public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
$l = localeconv();
$sPoint = preg_quote($l['decimal_point'], '/');
return preg_replace(array("/$sPoint/", "/^(-?)0\./"), array('.', '$1.'), $this->fSize) . ($this->sUnit === null ? '' : $this->sUnit);
}
}
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