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<?php
namespace Imagine\Gd;
use Imagine\Driver\AbstractInfo;
use Imagine\Exception\NotSupportedException;
use Imagine\Image\Format;
use Imagine\Image\FormatList;
use Imagine\Image\Palette\PaletteInterface;
use Imagine\Image\Palette\RGB;
/**
* Provide information and features supported by the GD graphics driver.
*
* @since 1.3.0
*/
class DriverInfo extends AbstractInfo
{
/**
* @var static|\Imagine\Exception\NotSupportedException|null
*/
private static $instance;
/**
* @throws \Imagine\Exception\NotSupportedException
*/
protected function __construct()
{
if (!function_exists('gd_info') || !defined('GD_VERSION')) {
throw new NotSupportedException('Gd driver not installed');
}
$m = null;
$driverRawVersion = PHP_VERSION;
$driverSemverVersion = defined('PHP_MAJOR_VERSION') ? implode('.', array(PHP_MAJOR_VERSION, PHP_MINOR_VERSION, PHP_RELEASE_VERSION)) : '';
$engineRawVersion = is_string(GD_VERSION) ? GD_VERSION : '';
$engineSemverVersion = preg_match('/^.*?(\d+\.\d+\.\d+)/', $engineRawVersion, $m) ? $m[1] : '';
parent::__construct($driverRawVersion, $driverSemverVersion, $engineRawVersion, $engineSemverVersion);
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\Info::get()
*/
public static function get($required = true)
{
if (self::$instance === null) {
try {
self::$instance = new static();
} catch (NotSupportedException $x) {
self::$instance = $x;
}
}
if (self::$instance instanceof self) {
return self::$instance;
}
if ($required) {
throw self::$instance;
}
return null;
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\Info::checkVersionIsSupported()
* @see \Imagine\Driver\AbstractInfo::checkVersionIsSupported()
*/
public function checkVersionIsSupported()
{
parent::checkVersionIsSupported();
if ($this->getEngineVersion() === '' || version_compare($this->getEngineVersion(), '2.0.1') < 0) {
throw new NotSupportedException(sprintf('GD2 version %s or higher is required, %s provided', '2.0.1', GD_VERSION));
}
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\AbstractInfo::checkFeature()
*/
protected function checkFeature($feature)
{
switch ($feature) {
case static::FEATURE_COLORPROFILES:
throw new NotSupportedException('GD driver does not support color profiles');
case static::FEATURE_TEXTFUNCTIONS:
if (!function_exists('imageftbbox')) {
throw new NotSupportedException('GD is not compiled with FreeType support');
}
break;
case static::FEATURE_MULTIPLELAYERS:
throw new NotSupportedException('GD does not support layer sets');
case static::FEATURE_CUSTOMRESOLUTION:
throw new NotSupportedException('GD does not support setting custom resolutions');
case static::FEATURE_EXPORTWITHCUSTOMRESOLUTION:
throw new NotSupportedException('GD driver does not support exporting images with custom resolutions');
case static::FEATURE_DRAWFILLEDCHORDSCORRECTLY:
throw new NotSupportedException('The GD Drawer can NOT draw correctly filled chords');
case static::FEATURE_DRAWUNFILLEDCIRCLESWITHTICHKESSCORRECTLY:
throw new NotSupportedException('The GD Drawer can NOT draw correctly not filled circles with a thickness greater than 1');
case static::FEATURE_DRAWUNFILLEDELLIPSESWITHTICHKESSCORRECTLY:
throw new NotSupportedException('The GD Drawer can NOT draw correctly not filled ellipses with a thickness greater than 1');
case static::FEATURE_ROTATEIMAGEWITHCORRECTSIZE:
$vFrom = '5.5';
$vTo = '7.1.11';
if (version_compare($this->getDriverVersion(), $vFrom) >= 0 && version_compare($this->getDriverVersion(), $vTo) < 0) {
// see https://bugs.php.net/bug.php?id=65148
throw new NotSupportedException("The GD driver is affected by bug https://bugs.php.net/bug.php?id=65148 from PHP version {$vFrom} to PHP version {$vTo}.");
}
break;
case static::FEATURE_EXPORTWITHCUSTOMJPEGSAMPLINGFACTORS:
throw new NotSupportedException('The GD driver does not support JPEG sampling factors');
}
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\AbstractInfo::buildSupportedFormats()
*/
protected function buildSupportedFormats()
{
$supportedFormats = array();
foreach (array(
'gif' => Format::ID_GIF,
'jpeg' => Format::ID_JPEG,
'png' => Format::ID_PNG,
'wbmp' => Format::ID_WBMP,
'xbm' => Format::ID_XBM,
'bmp' => Format::ID_BMP,
'webp' => Format::ID_WEBP,
'avif' => Format::ID_AVIF,
) as $suffix => $formatID) {
if (function_exists("image{$suffix}") && function_exists("imagecreatefrom{$suffix}")) {
$supportedFormats[] = Format::get($formatID);
}
}
return new FormatList($supportedFormats);
}
/**
* {@inheritdoc}
*
* @see \Imagine\Driver\Info::requirePaletteSupport()
* @see \Imagine\Driver\AbstractInfo::requirePaletteSupport()
*/
public function requirePaletteSupport(PaletteInterface $palette)
{
if (!($palette instanceof RGB)) {
throw new NotSupportedException('GD driver only supports RGB colors');
}
}
}
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