1 files changed, 107 insertions, 0 deletions
diff --git a/www/wiki/includes/media/Tiff.php b/www/wiki/includes/media/Tiff.php
new file mode 100644
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+++ b/www/wiki/includes/media/Tiff.php
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+<?php
+/**
+ * Handler for Tiff images.
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Media
+ */
+
+/**
+ * Handler for Tiff images.
+ *
+ * @ingroup Media
+ */
+class TiffHandler extends ExifBitmapHandler {
+	const EXPENSIVE_SIZE_LIMIT = 10485760; // TIFF files over 10M are considered expensive to thumbnail
+
+	/**
+	 * Conversion to PNG for inline display can be disabled here...
+	 * Note scaling should work with ImageMagick, but may not with GD scaling.
+	 *
+	 * Files pulled from an another MediaWiki instance via ForeignAPIRepo /
+	 * InstantCommons will have thumbnails managed from the remote instance,
+	 * so we can skip this check.
+	 *
+	 * @param File $file
+	 * @return bool
+	 */
+	public function canRender( $file ) {
+		global $wgTiffThumbnailType;
+
+		return (bool)$wgTiffThumbnailType
+			|| $file->getRepo() instanceof ForeignAPIRepo;
+	}
+
+	/**
+	 * Browsers don't support TIFF inline generally...
+	 * For inline display, we need to convert to PNG.
+	 *
+	 * @param File $file
+	 * @return bool
+	 */
+	public function mustRender( $file ) {
+		return true;
+	}
+
+	/**
+	 * @param string $ext
+	 * @param string $mime
+	 * @param array $params
+	 * @return bool
+	 */
+	function getThumbType( $ext, $mime, $params = null ) {
+		global $wgTiffThumbnailType;
+
+		return $wgTiffThumbnailType;
+	}
+
+	/**
+	 * @param File|FSFile $image
+	 * @param string $filename
+	 * @throws MWException
+	 * @return string
+	 */
+	function getMetadata( $image, $filename ) {
+		global $wgShowEXIF;
+
+		if ( $wgShowEXIF ) {
+			try {
+				$meta = BitmapMetadataHandler::Tiff( $filename );
+				if ( !is_array( $meta ) ) {
+					// This should never happen, but doesn't hurt to be paranoid.
+					throw new MWException( 'Metadata array is not an array' );
+				}
+				$meta['MEDIAWIKI_EXIF_VERSION'] = Exif::version();
+
+				return serialize( $meta );
+			} catch ( Exception $e ) {
+				// BitmapMetadataHandler throws an exception in certain exceptional
+				// cases like if file does not exist.
+				wfDebug( __METHOD__ . ': ' . $e->getMessage() . "\n" );
+
+				return ExifBitmapHandler::BROKEN_FILE;
+			}
+		} else {
+			return '';
+		}
+	}
+
+	public function isExpensiveToThumbnail( $file ) {
+		return $file->getSize() > static::EXPENSIVE_SIZE_LIMIT;
+	}
+}