Service

<?php namespace Intervention\Image; use Intervention\Image\Exception\NotReadableException; use Intervention\Image\Exception\NotSupportedException; abstract class AbstractColor { /** * Initiates color object from integer * * @param int $value * @return \Intervention\Image\AbstractColor */ abstract public function initFromInteger($value); /** * Initiates color object from given array * * @param array $value * @return \Intervention\Image\AbstractColor */ abstract public function initFromArray($value); /** * Initiates color object from given string * * @param string $value * @return \Intervention\Image\AbstractColor */ abstract public function initFromString($value); /** * Initiates color object from given ImagickPixel object * * @param ImagickPixel $value * @return \Intervention\Image\AbstractColor */ abstract public function initFromObject($value); /** * Initiates color object from given R, G and B values * * @param int $r * @param int $g * @param int $b * @return \Intervention\Image\AbstractColor */ abstract public function initFromRgb($r, $g, $b); /** * Initiates color object from given R, G, B and A values * * @param int $r * @param int $g * @param int $b * @param float $a * @return \Intervention\Image\AbstractColor */ abstract public function initFromRgba($r, $g, $b, $a); /** * Calculates integer value of current color instance * * @return int */ abstract public function getInt(); /** * Calculates hexadecimal value of current color instance * * @param string $prefix * @return string */ abstract public function getHex($prefix); /** * Calculates RGB(A) in array format of current color instance * * @return array */ abstract public function getArray(); /** * Calculates RGBA in string format of current color instance * * @return string */ abstract public function getRgba(); /** * Determines if current color is different from given color * * @param AbstractColor $color * @param int $tolerance * @return boolean */ abstract public function differs(AbstractColor $color, $tolerance = 0); /** * Creates new instance * * @param mixed $value */ public function __construct($value = null) { $this->parse($value); } /** * Parses given value as color * * @param mixed $value * @return \Intervention\Image\AbstractColor */ public function parse($value) { switch (true) { case is_string($value): $this->initFromString($value); break; case is_int($value): $this->initFromInteger($value); break; case is_array($value): $this->initFromArray($value); break; case is_object($value): $this->initFromObject($value); break; case is_null($value): $this->initFromArray([255, 255, 255, 0]); break; default: throw new NotReadableException( "Color format ({$value}) cannot be read." ); } return $this; } /** * Formats current color instance into given format * * @param string $type * @return mixed */ public function format($type) { switch (strtolower($type)) { case 'rgba': return $this->getRgba(); case 'hex': return $this->getHex('#'); case 'int': case 'integer': return $this->getInt(); case 'array': return $this->getArray(); case 'obj': case 'object': return $this; default: throw new NotSupportedException( "Color format ({$type}) is not supported." ); } } /** * Reads RGBA values from string into array * * @param string $value * @return array */ protected function rgbaFromString($value) { $result = false; // parse color string in hexidecimal format like #cccccc or cccccc or ccc $hexPattern = '/^#?([a-f0-9]{1,2})([a-f0-9]{1,2})([a-f0-9]{1,2})$/i'; // parse color string in format rgb(140, 140, 140) $rgbPattern = '/^rgb ?$([0-9]{1,3}), ?([0-9]{1,3}), ?([0-9]{1,3})$$/i'; // parse color string in format rgba(255, 0, 0, 0.5) $rgbaPattern = '/^rgba ?$([0-9]{1,3}), ?([0-9]{1,3}), ?([0-9]{1,3}), ?([0-9.]{1,4})$$/i'; if (preg_match($hexPattern, $value, $matches)) { $result = []; $result[0] = strlen($matches[1]) == '1' ? hexdec($matches[1].$matches[1]) : hexdec($matches[1]); $result[1] = strlen($matches[2]) == '1' ? hexdec($matches[2].$matches[2]) : hexdec($matches[2]); $result[2] = strlen($matches[3]) == '1' ? hexdec($matches[3].$matches[3]) : hexdec($matches[3]); $result[3] = 1; } elseif (preg_match($rgbPattern, $value, $matches)) { $result = []; $result[0] = ($matches[1] >= 0 && $matches[1] <= 255) ? intval($matches[1]) : 0; $result[1] = ($matches[2] >= 0 && $matches[2] <= 255) ? intval($matches[2]) : 0; $result[2] = ($matches[3] >= 0 && $matches[3] <= 255) ? intval($matches[3]) : 0; $result[3] = 1; } elseif (preg_match($rgbaPattern, $value, $matches)) { $result = []; $result[0] = ($matches[1] >= 0 && $matches[1] <= 255) ? intval($matches[1]) : 0; $result[1] = ($matches[2] >= 0 && $matches[2] <= 255) ? intval($matches[2]) : 0; $result[2] = ($matches[3] >= 0 && $matches[3] <= 255) ? intval($matches[3]) : 0; $result[3] = ($matches[4] >= 0 && $matches[4] <= 1) ? $matches[4] : 0; } else { throw new NotReadableException( "Unable to read color ({$value})." ); } return $result; } }

Service Section

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