%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\Exception\RuntimeException;
use Imagine\Image\Palette\Color\ColorInterface;
use Imagine\Image\Palette\Color\RGB as RGBColor;
use Imagine\Image\Profile;
use Imagine\Image\ProfileInterface;
/**
* The RGB palette.
*/
class RGB implements PaletteInterface
{
/**
* @var \Imagine\Image\Palette\ColorParser
*/
private $parser;
/**
* @var \Imagine\Image\ProfileInterface|null
*/
private $profile;
/**
* @var \Imagine\Image\Palette\Color\RGB[]
*/
protected static $colors = array();
public function __construct()
{
$this->parser = new ColorParser();
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::name()
*/
public function name()
{
return PaletteInterface::PALETTE_RGB;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::pixelDefinition()
*/
public function pixelDefinition()
{
return array(
ColorInterface::COLOR_RED,
ColorInterface::COLOR_GREEN,
ColorInterface::COLOR_BLUE,
);
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::supportsAlpha()
*/
public function supportsAlpha()
{
return true;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::getChannelsMaxValue()
*/
public function getChannelsMaxValue()
{
return 255;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::useProfile()
*/
public function useProfile(ProfileInterface $profile)
{
$this->profile = $profile;
return $this;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::profile()
*/
public function profile()
{
if (!$this->profile) {
$this->profile = Profile::fromPath(__DIR__ . '/../../resources/color.org/sRGB_IEC61966-2-1_black_scaled.icc');
}
return $this->profile;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::color()
*/
public function color($color, $alpha = null)
{
if ($alpha === null) {
$alpha = 100;
}
$color = $this->parser->parseToRGB($color);
$index = sprintf('#%02x%02x%02x-%d', $color[0], $color[1], $color[2], $alpha);
if (array_key_exists($index, static::$colors) === false) {
static::$colors[$index] = new RGBColor($this, $color, $alpha);
}
return static::$colors[$index];
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\Palette\PaletteInterface::blend()
*/
public function blend(ColorInterface $color1, ColorInterface $color2, $amount)
{
if (!$color1 instanceof RGBColor || !$color2 instanceof RGBColor) {
throw new RuntimeException('RGB palette can only blend RGB colors');
}
$amount = (float) $amount;
$amountComplement = 1 - $amount;
$max = $this->getChannelsMaxValue();
return $this->color(
array(
min(max((int) round($color2->getRed() * $amount + $color1->getRed() * $amountComplement), 0), $max),
min(max((int) round($color2->getGreen() * $amount + $color1->getGreen() * $amountComplement), 0), $max),
min(max((int) round($color2->getBlue() * $amount + $color1->getBlue() * $amountComplement), 0), $max),
),
min(max((int) round($color2->getAlpha() * $amount + $color1->getAlpha() * $amountComplement), 0), 100)
);
}
}
Zerion Mini Shell 1.0