Initial commit

typo3conf/ext/vhs/Classes/ViewHelpers/Resource/ImageViewHelper.php

@@ -0,0 +1,95 @@
+<?php
+namespace FluidTYPO3\Vhs\ViewHelpers\Resource;
+
+/*
+ * This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+use FluidTYPO3\Vhs\Traits\TemplateVariableViewHelperTrait;
+
+/**
+ * ViewHelper to output or assign a image from FAL
+ *
+ * @author Danilo Bürger <danilo.buerger@hmspl.de>, Heimspiel GmbH
+ * @package Vhs
+ * @subpackage ViewHelpers\Resource
+ */
+class ImageViewHelper extends AbstractImageViewHelper {
+
+	use TemplateVariableViewHelperTrait;
+
+	/**
+	 * name of the tag to be created by this view helper
+	 *
+	 * @var string
+	 * @api
+	 */
+	protected $tagName = 'img';
+
+	/**
+	 * Initialize arguments.
+	 *
+	 * @return void
+	 * @api
+	 */
+	public function initializeArguments() {
+		parent::initializeArguments();
+		$this->registerUniversalTagAttributes();
+		$this->registerTagAttribute('usemap', 'string', 'A hash-name reference to a map element with which to associate the image.', FALSE, NULL);
+		$this->registerTagAttribute('ismap', 'string', 'Specifies that its img element provides access to a server-side image map.', FALSE, NULL);
+		$this->registerTagAttribute('alt', 'string', 'Equivalent content for those who cannot process images or who have image loading disabled.', FALSE, NULL);
+		$this->registerArgument('as', 'string', 'If specified, a template variable with this name containing the requested data will be inserted instead of returning it.', FALSE, NULL);
+	}
+
+	/**
+	 * Render method
+	 *
+	 * @return string
+	 */
+	public function render() {
+		$files = $this->getFiles();
+
+		$images = $this->preprocessImages($files, TRUE);
+		if (TRUE === empty($images)) {
+			return NULL;
+		}
+
+		$info = array();
+		$tags = array();
+
+		foreach ($images as &$image) {
+			$source = $this->preprocessSourceUri($image['source']);
+			$width = $image['info'][0];
+			$height = $image['info'][1];
+			$alt = $this->arguments['alt'];
+			if (TRUE === empty($alt)) {
+				$alt = $image['file']['alternative'];
+			}
+
+			$this->tag->addAttribute('src', $source);
+			$this->tag->addAttribute('width', $width);
+			$this->tag->addAttribute('height', $height);
+			$this->tag->addAttribute('alt', $alt);
+
+			$tag = $this->tag->render();
+			$image['tag'] = $tag;
+			$tags[] = $tag;
+
+			$info[] = array(
+				'source' => $source,
+				'width' => $width,
+				'height' => $height,
+				'tag' => $tag
+			);
+		}
+		$as = $this->arguments['as'];
+		if (TRUE === empty($as)) {
+			return implode('', $tags);
+		}
+		return $this->renderChildrenWithVariableOrReturnInput($info);
+	}
+
+}