first commit

typo3/sysext/extensionmanager/Classes/ViewHelpers/DistributionImageViewHelper.php

@@ -0,0 +1,114 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\ViewHelpers;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\PathUtility;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
+
+/**
+ * Renders the distribution image
+ *
+ * @internal
+ */
+class DistributionImageViewHelper extends AbstractTagBasedViewHelper
+{
+    /**
+     * @var string
+     */
+    protected $tagName = 'img';
+
+    /**
+     * Initialize arguments.
+     */
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+        $this->registerArgument('extensionkey', 'string', '', true);
+        $this->registerArgument('width', 'int', 'width of the image');
+        $this->registerArgument('height', 'int', 'height of the image');
+        $this->registerUniversalTagAttributes();
+        $this->registerTagAttribute('alt', 'string', 'Specifies an alternate text for an image', false);
+    }
+
+    /**
+     * Renders the destribution preview image for the given extension
+     *
+     * @return string rendered tag.
+     */
+    public function render()
+    {
+        $extensionKey = $this->arguments['extensionkey'];
+        $width = $this->arguments['width'];
+        $height = $this->arguments['height'];
+        $content = '';
+
+        $src = $this->findImage($extensionKey);
+        $uri = $this->getImageUri($src);
+
+        if (!empty($uri)) {
+            if ($width) {
+                $this->tag->addAttribute('width', (int)$width);
+            }
+            if ($height) {
+                $this->tag->addAttribute('height', (int)$height);
+            }
+            $this->tag->addAttribute('src', $uri);
+            $content = $this->tag->render();
+        }
+
+        return $content;
+    }
+
+    /**
+     * Find the distrubution image
+     *
+     * @param string $extensionKey
+     * @return string
+     */
+    protected function findImage($extensionKey)
+    {
+        $paths = [];
+        $paths[] = 'EXT:' . $extensionKey . '/Resources/Public/Images/Distribution.svg';
+        $paths[] = 'EXT:' . $extensionKey . '/Resources/Public/Images/Distribution.png';
+        $paths[] = 'EXT:extensionmanager/Resources/Public/Images/Distribution.svg';
+
+        foreach ($paths as $path) {
+            $absFileName = GeneralUtility::getFileAbsFileName($path);
+            if (file_exists($absFileName)) {
+                return $absFileName;
+            }
+        }
+
+        return '';
+    }
+
+    /**
+     * Get image uri
+     *
+     * @param string $src
+     * @return string
+     */
+    protected function getImageUri($src)
+    {
+        $uri = GeneralUtility::getFileAbsFileName($src);
+        if ($uri !== '' && !file_exists($uri)) {
+            $uri = '';
+        }
+        if ($uri !== '') {
+            $uri = '../' . PathUtility::stripPathSitePrefix($uri);
+        }
+        return $uri;
+    }
+}