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<?php
/**
* Handler for Tiff images.
*
* @file
* @ingroup Media
*/
/**
* Handler for Tiff images.
*
* @ingroup Media
*/
class TiffHandler extends ExifBitmapHandler {
/**
* 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
*
* @return bool
*/
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
*
* @return bool
*/
function mustRender( $file ) {
return true;
}
/**
* @param $ext
* @param $mime
* @param $params
* @return bool
*/
function getThumbType( $ext, $mime, $params = null ) {
global $wgTiffThumbnailType;
return $wgTiffThumbnailType;
}
/**
* @param $image
* @param $filename
* @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 ( MWException $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 '';
}
}
}
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