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