function ImageStyle::buildUri

Overrides ImageStyleInterface::buildUri

File

core/modules/image/src/Entity/ImageStyle.php, line 178

Class

ImageStyle

Defines an image style configuration entity.

Namespace

Code

public function buildUri($uri) {
    $source_scheme = $scheme = StreamWrapperManager::getScheme($uri);
    $default_scheme = $this->fileDefaultScheme();
    if ($source_scheme) {
        $path = StreamWrapperManager::getTarget($uri);
        // The scheme of derivative image files only needs to be computed for
        // source files not stored in the default scheme.
        if ($source_scheme != $default_scheme) {
            $class = $this->getStreamWrapperManager()
                ->getClass($source_scheme);
            $is_writable = NULL;
            if ($class) {
                $is_writable = $class::getType() & StreamWrapperInterface::WRITE;
            }
            // Compute the derivative URI scheme. Derivatives created from writable
            // source stream wrappers will inherit the scheme. Derivatives created
            // from read-only stream wrappers will fall-back to the default scheme.
            $scheme = $is_writable ? $source_scheme : $default_scheme;
        }
    }
    else {
        $path = $uri;
        $source_scheme = $scheme = $default_scheme;
    }
    return "{$scheme}://styles/{$this->id()}/{$source_scheme}/{$this->addExtension($path)}";
}