FilePresenter with actions view & download. Requires fileinfo extension to determine right content type.

FilePresenter.php

<?php
use Drahak\Application\Responses\FileViewResponse,
	Nette\Application\Responses\FileResponse;

/**
 * FilePresenter
 * @author Drahomír Hanák
 */
class FilePresenter extends BasePresenter
{

	/**
	 * Triggers file view
	 * @param string $file
	 */
	public function actionView($file)
	{
		$this->sendResponse(new FileViewResponse('files/' . $file));
	}

	/**
	 * Triggers file download
	 * @param stirng $file
	 */
	public function actionDownload($file)
	{
		$this->sendResponse(new FileResponse('files/' . $file));
	}

}

FileViewResponse.php

<?php
namespace Drahak\Application\Responses;

use Nette,
	Nette\Http\IRequest,
	Nette\Http\IResponse,
	Nette\Utils\MimeTypeDetector;

/**
 * FileViewResponse
 * @author Drahomír Hanák
 *
 * @property-read string $contentType
 * @property-read string $file
 */
class FileViewResponse extends Nette\Object implements Nette\Application\IResponse
{

	/** @var string */
	private $file;

	/** @var string */
	private $contentType;

	public function __construct($file = NULL)
	{
		$this->file = $file;
		if (!file_exists($this->file)) {
			throw new Nette\Application\BadRequestException('File ' . $this->file  . ' does not exist.');
		}

		$this->contentType = finfo_file(finfo_open(FILEINFO_MIME_TYPE), $this->file);
	}

	/**
	 * Get content type
	 * @return string
	 */
	final public function getContentType()
	{
		return $this->contentType;
	}

	/**
	 * Get file path
	 * @return string
	 */
	final public function getFile()
	{
		return $this->file;
	}

	/**
	 * Sends response to output
	 * @param IRequest $httpRequest
	 * @param IResponse $httpResponse
	 * @return void
	 */
	public function send(IRequest $httpRequest, IResponse $httpResponse)
	{
		$httpResponse->setContentType($this->contentType);
		echo file_get_contents($this->file);
	}


}