lib/php-css-parser/Value/Color.php

   1 <?php
   2
   3 namespace Sabberworm\CSS\Value;
   4
   5 use Sabberworm\CSS\Parsing\ParserState;
   6
   7 class Color extends CSSFunction {
   8
   9         public function __construct($aColor, $iLineNo = 0) {
  10                 parent::__construct(implode('', array_keys($aColor)), $aColor, ',', $iLineNo);
  11         }
  12
  13         public static function parse(ParserState $oParserState) {
  14                 $aColor = array();
  15                 if ($oParserState->comes('#')) {
  16                         $oParserState->consume('#');
  17                         $sValue = $oParserState->parseIdentifier(false);
  18                         if ($oParserState->strlen($sValue) === 3) {
  19                                 $sValue = $sValue[0] . $sValue[0] . $sValue[1] . $sValue[1] . $sValue[2] . $sValue[2];
  20                         } else if ($oParserState->strlen($sValue) === 4) {
  21                                 $sValue = $sValue[0] . $sValue[0] . $sValue[1] . $sValue[1] . $sValue[2] . $sValue[2] . $sValue[3] . $sValue[3];
  22                         }
  23
  24                         if ($oParserState->strlen($sValue) === 8) {
  25                                 $aColor = array(
  26                                         'r' => new Size(intval($sValue[0] . $sValue[1], 16), null, true, $oParserState->currentLine()),
  27                                         'g' => new Size(intval($sValue[2] . $sValue[3], 16), null, true, $oParserState->currentLine()),
  28                                         'b' => new Size(intval($sValue[4] . $sValue[5], 16), null, true, $oParserState->currentLine()),
  29                                         'a' => new Size(round(self::mapRange(intval($sValue[6] . $sValue[7], 16), 0, 255, 0, 1), 2), null, true, $oParserState->currentLine())
  30                                 );
  31                         } else {
  32                                 $aColor = array(
  33                                         'r' => new Size(intval($sValue[0] . $sValue[1], 16), null, true, $oParserState->currentLine()),
  34                                         'g' => new Size(intval($sValue[2] . $sValue[3], 16), null, true, $oParserState->currentLine()),
  35                                         'b' => new Size(intval($sValue[4] . $sValue[5], 16), null, true, $oParserState->currentLine())
  36                                 );
  37                         }
  38                 } else {
  39                         $sColorMode = $oParserState->parseIdentifier(true);
  40                         $oParserState->consumeWhiteSpace();
  41                         $oParserState->consume('(');
  42                         $iLength = $oParserState->strlen($sColorMode);
  43                         for ($i = 0; $i < $iLength; ++$i) {
  44                                 $oParserState->consumeWhiteSpace();
  45                                 $aColor[$sColorMode[$i]] = Size::parse($oParserState, true);
  46                                 $oParserState->consumeWhiteSpace();
  47                                 if ($i < ($iLength - 1)) {
  48                                         $oParserState->consume(',');
  49                                 }
  50                         }
  51                         $oParserState->consume(')');
  52                 }
  53                 return new Color($aColor, $oParserState->currentLine());
  54         }
  55
  56         private static function mapRange($fVal, $fFromMin, $fFromMax, $fToMin, $fToMax) {
  57                 $fFromRange = $fFromMax - $fFromMin;
  58                 $fToRange = $fToMax - $fToMin;
  59                 $fMultiplier = $fToRange / $fFromRange;
  60                 $fNewVal = $fVal - $fFromMin;
  61                 $fNewVal *= $fMultiplier;
  62                 return $fNewVal + $fToMin;
  63         }
  64
  65         public function getColor() {
  66                 return $this->aComponents;
  67         }
  68
  69         public function setColor($aColor) {
  70                 $this->setName(implode('', array_keys($aColor)));
  71                 $this->aComponents = $aColor;
  72         }
  73
  74         public function getColorDescription() {
  75                 return $this->getName();
  76         }
  77
  78         public function __toString() {
  79                 return $this->render(new \Sabberworm\CSS\OutputFormat());
  80         }
  81
  82         public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
  83                 // Shorthand RGB color values
  84                 if($oOutputFormat->getRGBHashNotation() && implode('', array_keys($this->aComponents)) === 'rgb') {
  85                         $sResult = sprintf(
  86                                 '%02x%02x%02x',
  87                                 $this->aComponents['r']->getSize(),
  88                                 $this->aComponents['g']->getSize(),
  89                                 $this->aComponents['b']->getSize()
  90                         );
  91                         return '#'.(($sResult[0] == $sResult[1]) && ($sResult[2] == $sResult[3]) && ($sResult[4] == $sResult[5]) ? "$sResult[0]$sResult[2]$sResult[4]" : $sResult);
  92                 }
  93                 return parent::render($oOutputFormat);
  94         }
  95 }