%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\Gd;
use Imagine\Driver\InfoProvider;
use Imagine\Exception\InvalidArgumentException;
use Imagine\Exception\RuntimeException;
use Imagine\Factory\ClassFactoryInterface;
use Imagine\File\LoaderInterface;
use Imagine\Image\AbstractImagine;
use Imagine\Image\BoxInterface;
use Imagine\Image\Metadata\MetadataBag;
use Imagine\Image\Palette\Color\ColorInterface;
use Imagine\Image\Palette\PaletteInterface;
use Imagine\Image\Palette\RGB;
use Imagine\Utils\ErrorHandling;
/**
* Imagine implementation using the GD library.
*
* @final
*/
class Imagine extends AbstractImagine implements InfoProvider
{
/**
* Initialize the class.
*/
public function __construct()
{
static::getDriverInfo()->checkVersionIsSupported();
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\InfoProvider::getDriverInfo()
* @since 1.3.0
*/
public static function getDriverInfo($required = true)
{
return DriverInfo::get($required);
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\ImagineInterface::create()
*/
public function create(BoxInterface $size, ColorInterface $color = null)
{
$width = $size->getWidth();
$height = $size->getHeight();
$resource = imagecreatetruecolor($width, $height);
if ($resource === false) {
throw new RuntimeException('Create operation failed');
}
if ($color === null) {
$palette = new RGB();
$color = $palette->color('fff');
} else {
$palette = $color->getPalette();
static::getDriverInfo()->requirePaletteSupport($palette);
}
$index = imagecolorallocatealpha($resource, $color->getRed(), $color->getGreen(), $color->getBlue(), round(127 * (100 - $color->getAlpha()) / 100));
if ($index === false) {
throw new RuntimeException('Unable to allocate color');
}
if (imagefill($resource, 0, 0, $index) === false) {
throw new RuntimeException('Could not set background color fill');
}
if ($color->getAlpha() <= 5) {
imagecolortransparent($resource, $index);
}
return $this->wrap($resource, $palette, new MetadataBag());
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\ImagineInterface::open()
*/
public function open($path)
{
$loader = $path instanceof LoaderInterface ? $path : $this->getClassFactory()->createFileLoader($path);
$path = $loader->getPath();
$data = $loader->getData();
$resource = $this->createImageFromString($data);
if (!($resource instanceof \GdImage) && !\is_resource($resource)) {
throw new RuntimeException(sprintf('Unable to open image %s', $path));
}
return $this->wrap($resource, new RGB(), $this->getMetadataReader()->readFile($loader));
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\ImagineInterface::load()
*/
public function load($string)
{
return $this->doLoad($string, $this->getMetadataReader()->readData($string));
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\ImagineInterface::read()
*/
public function read($resource)
{
if (!\is_resource($resource)) {
throw new InvalidArgumentException('Variable does not contain a stream resource');
}
$content = stream_get_contents($resource);
if ($content === false) {
throw new InvalidArgumentException('Cannot read resource content');
}
return $this->doLoad($content, $this->getMetadataReader()->readData($content, $resource));
}
/**
* {@inheritdoc}
*
* @see \Imagine\Image\ImagineInterface::font()
*/
public function font($file, $size, ColorInterface $color)
{
return $this->getClassFactory()->createFont(ClassFactoryInterface::HANDLE_GD, $file, $size, $color);
}
/**
* @param resource|\GdImage $resource
* @param \Imagine\Image\Palette\PaletteInterface $palette
* @param \Imagine\Image\Metadata\MetadataBag $metadata
*
* @throws \Imagine\Exception\RuntimeException
*
* @return \Imagine\Image\ImageInterface
*/
private function wrap($resource, PaletteInterface $palette, MetadataBag $metadata)
{
if (!imageistruecolor($resource)) {
if (\function_exists('imagepalettetotruecolor')) {
if (imagepalettetotruecolor($resource) === false) {
throw new RuntimeException('Could not convert a palette based image to true color');
}
} else {
list($width, $height) = array(imagesx($resource), imagesy($resource));
// create transparent truecolor canvas
$truecolor = imagecreatetruecolor($width, $height);
$transparent = imagecolorallocatealpha($truecolor, 255, 255, 255, 127);
imagealphablending($truecolor, false);
imagefilledrectangle($truecolor, 0, 0, $width, $height, $transparent);
imagealphablending($truecolor, false);
imagecopy($truecolor, $resource, 0, 0, 0, 0, $width, $height);
imagedestroy($resource);
$resource = $truecolor;
}
}
if (imagealphablending($resource, false) === false || imagesavealpha($resource, true) === false) {
throw new RuntimeException('Could not set alphablending, savealpha and antialias values');
}
if (\function_exists('imageantialias')) {
imageantialias($resource, true);
}
return $this->getClassFactory()->createImage(ClassFactoryInterface::HANDLE_GD, $resource, $palette, $metadata);
}
/**
* @param string $string
* @param \Imagine\Image\Metadata\MetadataBag $metadata
*
* @throws \Imagine\Exception\RuntimeException
*
* @return \Imagine\Image\ImageInterface
*/
private function doLoad($string, MetadataBag $metadata)
{
$resource = $this->createImageFromString($string);
if (!$resource instanceof \GdImage && !\is_resource($resource)) {
throw new RuntimeException('An image could not be created from the given input');
}
return $this->wrap($resource, new RGB(), $metadata);
}
/**
* Check if the raw image data represents an image in WebP format.
*
* @param string $data
*
* @return bool
*/
private function isWebP(&$data)
{
return substr($data, 8, 7) === 'WEBPVP8';
}
/**
* Create an image resource starting from its raw daa.
*
* @param string $string
*
* @return resource|\GdImage|false
*/
private function createImageFromString(&$string)
{
return ErrorHandling::ignoring(-1, function () use (&$string) {
// imagecreatefromstring() does not support webp images before PHP 7.3.0
if (PHP_VERSION_ID < 70300 && function_exists('imagecreatefromwebp') && $this->isWebP($string)) {
return imagecreatefromwebp('data:image/webp;base64,' . base64_encode($string));
}
return imagecreatefromstring($string);
});
}
}
Zerion Mini Shell 1.0