Файл: concrete5.7.5.6/concrete/vendor/imagine/imagine/lib/Imagine/Image/Palette/ColorParser.php
Строк: 134
<?php
/*
* This file is part of the Imagine package.
*
* (c) Bulat Shakirzyanov <mallluhuct@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ImagineImagePalette;
use ImagineExceptionInvalidArgumentException;
class ColorParser
{
/**
* Parses a color to a RGB tuple
*
* @param string|array|integer $color
*
* @return array
*
* @throws InvalidArgumentException
*/
public function parseToRGB($color)
{
$color = $this->parse($color);
if (4 === count($color)) {
$color = array(
255 * (1 - $color[0] / 100) * (1 - $color[3] / 100),
255 * (1 - $color[1] / 100) * (1 - $color[3] / 100),
255 * (1 - $color[2] / 100) * (1 - $color[3] / 100),
);
}
return $color;
}
/**
* Parses a color to a CMYK tuple
*
* @param string|array|integer $color
*
* @return array
*
* @throws InvalidArgumentException
*/
public function parseToCMYK($color)
{
$color = $this->parse($color);
if (3 === count($color)) {
$r = $color[0] / 255;
$g = $color[1] / 255;
$b = $color[2] / 255;
$k = 1 - max($r, $g, $b);
$color = array(
1 === $k ? 0 : round((1 - $r - $k) / (1- $k) * 100),
1 === $k ? 0 : round((1 - $g - $k) / (1- $k) * 100),
1 === $k ? 0 : round((1 - $b - $k) / (1- $k) * 100),
round($k * 100)
);
}
return $color;
}
/**
* Parses a color to a grayscale value
*
* @param string|array|integer $color
*
* @return array
*
* @throws InvalidArgumentException
*/
public function parseToGrayscale($color)
{
if (is_array($color) && 1 === count($color)) {
return array_values($color);
}
$color = array_unique($this->parse($color));
if (1 !== count($color)) {
throw new InvalidArgumentException('The provided color has different values of red, green and blue components. Grayscale colors must have the same values for these.');
}
return $color;
}
/**
* Parses a color
*
* @param string|array|integer $color
*
* @return array
*
* @throws InvalidArgumentException
*/
private function parse($color)
{
if (!is_string($color) && !is_array($color) && !is_int($color)) {
throw new InvalidArgumentException(sprintf('Color must be specified as a hexadecimal string, array or integer, %s given', gettype($color)));
}
if (is_array($color)) {
if (3 === count($color) || 4 === count($color)) {
return array_values($color);
}
throw new InvalidArgumentException('Color argument if array, must look like array(R, G, B), or array(C, M, Y, K) where R, G, B are the integer values between 0 and 255 for red, green and blue or cyan, magenta, yellow and black color indexes accordingly');
}
if (is_string($color)) {
if (0 === strpos($color, 'cmyk(')) {
$substrColor = substr($color, 5, strlen($color) - 6);
$components = array_map(function ($component) {
return round(trim($component, ' %'));
}, explode(',', $substrColor));
if (count($components) !== 4) {
throw new InvalidArgumentException(sprintf('Unable to parse color %s', $color));
}
return $components;
} else {
$color = ltrim($color, '#');
if (strlen($color) !== 3 && strlen($color) !== 6) {
throw new InvalidArgumentException(sprintf('Color must be a hex value in regular (6 characters) or short (3 characters) notation, "%s" given', $color));
}
if (strlen($color) === 3) {
$color = $color[0] . $color[0] . $color[1] . $color[1] . $color[2] . $color[2];
}
$color = array_map('hexdec', str_split($color, 2));
}
}
if (is_int($color)) {
$color = array(255 & ($color >> 16), 255 & ($color >> 8), 255 & $color);
}
return $color;
}
}