%PDF-
%PDF-
Mini Shell
Mini Shell
<?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 Imagine\Image\Palette;
use Imagine\Image\Palette\Color\Gray as GrayColor;
use Imagine\Image\Palette\Color\ColorInterface;
use Imagine\Image\ProfileInterface;
use Imagine\Image\Profile;
use Imagine\Exception\RuntimeException;
class Grayscale implements PaletteInterface
{
/**
* @var ColorParser
*/
private $parser;
/**
* @var ProfileInterface
*/
private $profile;
/**
* @var array
*/
protected static $colors = array();
public function __construct()
{
$this->parser = new ColorParser();
}
/**
* {@inheritdoc}
*/
public function name()
{
return PaletteInterface::PALETTE_GRAYSCALE;
}
/**
* {@inheritdoc}
*/
public function pixelDefinition()
{
return array(ColorInterface::COLOR_GRAY);
}
/**
* {@inheritdoc}
*/
public function supportsAlpha()
{
return true;
}
/**
* {@inheritdoc}
*/
public function useProfile(ProfileInterface $profile)
{
$this->profile = $profile;
return $this;
}
/**
* {@inheritdoc}
*/
public function profile()
{
if (!$this->profile) {
$this->profile = Profile::fromPath(__DIR__ . '/../../resources/colormanagement.org/ISOcoated_v2_grey1c_bas.ICC');
}
return $this->profile;
}
/**
* {@inheritdoc}
*/
public function color($color, $alpha = null)
{
if (null === $alpha) {
$alpha = 0;
}
$color = $this->parser->parseToGrayscale($color);
$index = sprintf('#%02x%02x%02x-%d', $color[0], $color[0], $color[0], $alpha);
if (false === array_key_exists($index, static::$colors)) {
static::$colors[$index] = new GrayColor($this, $color, $alpha);
}
return static::$colors[$index];
}
/**
* {@inheritdoc}
*/
public function blend(ColorInterface $color1, ColorInterface $color2, $amount)
{
if (!$color1 instanceof GrayColor || ! $color2 instanceof GrayColor) {
throw new RuntimeException('Grayscale palette can only blend Grayscale colors');
}
return $this->color(
array(
(int) min(255, min($color1->getGray(), $color2->getGray()) + round(abs($color2->getGray() - $color1->getGray()) * $amount)),
),
(int) min(100, min($color1->getAlpha(), $color2->getAlpha()) + round(abs($color2->getAlpha() - $color1->getAlpha()) * $amount))
);
}
}
Zerion Mini Shell 1.0