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<?php
/**
* image view - display images
*
* This file is part of Zoph.
*
* Zoph is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Zoph is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Zoph; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @package Zoph
* @author Jeroen Roos
*/
namespace image\view;
use web\view\viewInterface;
use Exception;
use conf\conf;
use file;
use photo;
use photo\watermarked;
use template\template;
use user;
use web\request;
use web\view\view as webView;
use photoNotFoundException;
/**
* This is class takes care of displaying images
*/
class display extends webView implements viewInterface {
/** @var string holds the image to display */
protected string $file = "";
/** @var array request variables */
protected array $vars;
/**
* Create view
* @param request web request
* @param photo The photo to display
*/
public function __construct(protected request $request, protected photo $object, private string $type) {
if (empty($type)) {
$this->type = "full";
}
$this->vars=$request->getRequestVars();
$name = $this->object->get("name");
$imagePath = conf::get("path.images") . "/" . $this->object->get("path") . "/";
if ($this->type != "full") {
$imagePath .= $this->type . "/" . $this->type . "_";
}
$imagePath .= $name;
if (!file_exists($imagePath)) {
throw new photoNotFoundException($name . " could not be found");
} else {
$this->file = $imagePath;
}
if ($this->object instanceof watermarked && $this->type == "full") {
$this->object->createWatermark();
}
}
public function display($template = null) : void {
foreach ($this->getHeaders() as $header) {
header($header);
}
echo $this->view();
}
public function view() : string {
if ($this->object instanceof watermarked) {
$photo = $this->object->photo;
}
return $photo ?? file_get_contents($this->file);
}
/**
* Get actionlinks
*/
protected function getActionlinks() : ?array {
return null;
}
/**
* Get the title for this view
* not usually displayed, because the views will output
* an image, not an HTML page
*/
public function getTitle() : string {
return $this->object->getName();
}
public function getHeaders() : array {
$headers = array();
$file = $this->file;
$mtime = filemtime($file);
if ($this->object instanceof watermarked) {
$filesize = $this->object->filesize;
} else {
$filesize = filesize($file);
}
$name = $this->object->get("name");
$gmtMtime = gmdate('D, d M Y H:i:s', $mtime) . ' GMT';
$mod = $this->request->getServerVar("HTTP_IF_MODIFIED_SINCE") ?? "";
if ($mod == $gmtMtime) {
$headers[]="HTTP/1.1 304 Not Modified";
} else {
try {
$f = new file($file);
$imageType=$f->getMime();
} catch (Exception $e) {
throw new photoNotFoundException($name . " could not be found: " . $e->getMessage());
}
if ($imageType) {
$headers[] = "Content-Length: " . $filesize;
$headers[] = "Content-Disposition: inline; filename=" . $name;
$headers[] = "Last-Modified: " . $gmtMtime;
$headers[] = "Content-type: " . $imageType;
}
}
return $headers;
}
}
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