Initial commit

2018-04-02 08:07:38 +02:00
commit 7330c1ed3e
2054 changed files with 405203 additions and 0 deletions
--- a/typo3conf/ext/vhs/Classes/Traits/SourceSetViewHelperTrait.php
+++ b/typo3conf/ext/vhs/Classes/Traits/SourceSetViewHelperTrait.php
@@ -0,0 +1,113 @@
+<?php
+namespace FluidTYPO3\Vhs\Traits;
+
+use FluidTYPO3\Vhs\Utility\FrontendSimulationUtility;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface;
+
+/*
+ * 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.
+ */
+
+/**
+ * This trait can be used by viewhelpers that generate image tags
+ * to add srcsets based to the imagetag for better responsiveness
+ */
+trait SourceSetViewHelperTrait {
+
+	/**
+	 * used to attach srcset variants of a given image to the specified tag
+	 *
+	 * @param \TYPO3\CMS\Fluid\Core\ViewHelper\TagBuilder $tag the tag to add the srcset as argument
+	 * @param string $src image path to render srcsets for
+	 * @return array
+	 */
+	public function addSourceSet($tag, $src) {
+		$srcsets = $this->getSourceSetWidths();
+
+ 		if ('BE' === TYPO3_MODE) {
+			FrontendSimulationUtility::simulateFrontendEnvironment();
+		}
+
+		$format = $this->arguments['format'];
+		$quality = $this->arguments['quality'];
+		$treatIdAsReference = (boolean) $this->arguments['treatIdAsReference'];
+
+		$imageSources = array();
+		$srcsetVariants = array();
+
+		foreach ($srcsets as $key => $width) {
+			$srcsetVariant = $this->getImgResource($src, $width, $format, $quality, $treatIdAsReference);
+
+			$srcsetVariantSrc = rawurldecode($srcsetVariant[3]);
+			$srcsetVariantSrc = $this->preprocessSourceUri(GeneralUtility::rawUrlEncodeFP($srcsetVariantSrc));
+
+			$imageSources[$srcsetVariant[0]] = array(
+				'src' => $srcsetVariantSrc,
+				'width' => $srcsetVariant[0],
+				'height' => $srcsetVariant[1],
+			);
+			$srcsetVariants[$srcsetVariant[0]] = $srcsetVariantSrc . ' ' . $srcsetVariant[0] . 'w';
+		}
+
+		$tag->addAttribute('srcset', implode(',', $srcsetVariants));
+
+		if ('BE' === TYPO3_MODE) {
+			FrontendSimulationUtility::resetFrontendEnvironment();
+		}
+
+		return $imageSources;
+	}
+
+	/**
+	 * generates a copy of a give image with a specific width
+	 *
+	 * @param string $src path of the image to convert
+	 * @param integer $width width to convert the image to
+	 * @param string $format format of the resulting copy
+	 * @param string $quality quality of the resulting copy
+	 * @param string $treatIdAsReference given src argument is a sys_file_reference record
+	 * @param array $params additional params for the image rendering
+	 * @return string
+	 */
+	public function getImgResource($src, $width, $format, $quality, $treatIdAsReference, $params = NULL) {
+
+		$setup = array(
+			'width' => $width,
+			'treatIdAsReference' => $treatIdAsReference
+		);
+		if (FALSE === empty($format)) {
+			$setup['ext'] = $format;
+		}
+		if (0 < intval($quality)) {
+			$quality = MathUtility::forceIntegerInRange($quality, 10, 100, 75);
+			$setup['params'] .= ' -quality ' . $quality;
+		}
+
+		if ('BE' === TYPO3_MODE && '../' === substr($src, 0, 3)) {
+			$src = substr($src, 3);
+		}
+		return $this->contentObject->getImgResource($src, $setup);
+	}
+
+	/**
+	 * returns an array of srcsets based on the mixed ViewHelper
+	 * input (list, csv, array, iterator)
+	 *
+	 * @return array
+	 */
+	public function getSourceSetWidths() {
+		$srcsets = $this->arguments['srcset'];
+		if (TRUE === $srcsets instanceof \Traversable) {
+			$srcsets = iterator_to_array($srcsets);
+		} elseif (TRUE === is_string($srcsets)) {
+			$srcsets = GeneralUtility::trimExplode(',', $srcsets, TRUE);
+		} else {
+			$srcsets = (array) $srcsets;
+		}
+		return $srcsets;
+	}
+}