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<?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\Imagick;
use Imagine\Exception\NotSupportedException;
use Imagine\Image\AbstractImagine;
use Imagine\Image\BoxInterface;
use Imagine\Image\Metadata\MetadataBag;
use Imagine\Image\Palette\Color\ColorInterface;
use Imagine\Exception\InvalidArgumentException;
use Imagine\Exception\RuntimeException;
use Imagine\Image\Palette\CMYK;
use Imagine\Image\Palette\RGB;
use Imagine\Image\Palette\Grayscale;
/**
* Imagine implementation using the Imagick PHP extension
*/
final class Imagine extends AbstractImagine
{
/**
* @throws RuntimeException
*/
public function __construct()
{
if (!class_exists('Imagick')) {
throw new RuntimeException('Imagick not installed');
}
if (version_compare('6.2.9', $this->getVersion(new \Imagick())) > 0) {
throw new RuntimeException('ImageMagick version 6.2.9 or higher is required');
}
}
/**
* {@inheritdoc}
*/
public function open($path)
{
$path = $this->checkPath($path);
try {
$imagick = new \Imagick($path);
$image = new Image($imagick, $this->createPalette($imagick), $this->getMetadataReader()->readFile($path));
} catch (\Exception $e) {
throw new RuntimeException(sprintf('Unable to open image %s', $path), $e->getCode(), $e);
}
return $image;
}
/**
* {@inheritdoc}
*/
public function create(BoxInterface $size, ColorInterface $color = null)
{
$width = $size->getWidth();
$height = $size->getHeight();
$palette = null !== $color ? $color->getPalette() : new RGB();
$color = null !== $color ? $color : $palette->color('fff');
try {
$pixel = new \ImagickPixel((string) $color);
$pixel->setColorValue(\Imagick::COLOR_ALPHA, $color->getAlpha() / 100);
$imagick = new \Imagick();
$imagick->newImage($width, $height, $pixel);
$imagick->setImageMatte(true);
$imagick->setImageBackgroundColor($pixel);
if (version_compare('6.3.1', $this->getVersion($imagick)) < 0) {
$imagick->setImageOpacity($pixel->getColorValue(\Imagick::COLOR_ALPHA));
}
$pixel->clear();
$pixel->destroy();
return new Image($imagick, $palette, new MetadataBag());
} catch (\ImagickException $e) {
throw new RuntimeException('Could not create empty image', $e->getCode(), $e);
}
}
/**
* {@inheritdoc}
*/
public function load($string)
{
try {
$imagick = new \Imagick();
$imagick->readImageBlob($string);
$imagick->setImageMatte(true);
return new Image($imagick, $this->createPalette($imagick), $this->getMetadataReader()->readData($string));
} catch (\ImagickException $e) {
throw new RuntimeException('Could not load image from string', $e->getCode(), $e);
}
}
/**
* {@inheritdoc}
*/
public function read($resource)
{
if (!is_resource($resource)) {
throw new InvalidArgumentException('Variable does not contain a stream resource');
}
try {
$imagick = new \Imagick();
$imagick->readImageFile($resource);
} catch (\ImagickException $e) {
throw new RuntimeException('Could not read image from resource', $e->getCode(), $e);
}
return new Image($imagick, $this->createPalette($imagick), $this->getMetadataReader()->readStream($resource));
}
/**
* {@inheritdoc}
*/
public function font($file, $size, ColorInterface $color)
{
return new Font(new \Imagick(), $file, $size, $color);
}
/**
* Returns the palette corresponding to an \Imagick resource colorspace
*
* @param \Imagick $imagick
*
* @return CMYK|Grayscale|RGB
*
* @throws NotSupportedException
*/
private function createPalette(\Imagick $imagick)
{
switch ($imagick->getImageColorspace()) {
case \Imagick::COLORSPACE_RGB:
case \Imagick::COLORSPACE_SRGB:
return new RGB();
case \Imagick::COLORSPACE_CMYK:
return new CMYK();
case \Imagick::COLORSPACE_GRAY:
return new Grayscale();
default:
throw new NotSupportedException('Only RGB and CMYK colorspace are currently supported');
}
}
/**
* Returns ImageMagick version
*
* @param \Imagick $imagick
*
* @return string
*/
private function getVersion(\Imagick $imagick)
{
$v = $imagick->getVersion();
list($version) = sscanf($v['versionString'], 'ImageMagick %s %04d-%02d-%02d %s %s');
return $version;
}
}
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