galleryresource.class.php

一个用PHP编写的

				$albums = new GalleryAlbums();
				$this->_album = $albums->getAlbum( $this->getAlbumId());
			}
			
			return $this->_album;
		}

		/**
		 * Sets the descriptoion of the object
		 *
		 * @param description the new description
		 */
        function setDescription( $description )
        {
        	$this->_description = $description;
        }
		
		/**
		 * @return returns the format of the thumbnail that was generated for this file, if any. Of
		 * course this method has no relevance if the object is not representing an image
		 */		
		function getThumbnailFormat()
		{
			return $this->_thumbnailFormat;
		}
		
		/**
		 * Sets the thumbnail format
		 *
		 * @return nothing
		 */		
		function setThumbnailFormat( $format )
		{
			$this->_thumbnailFormat = $format;
		}
		
		/**
		 * returns the size of the resource file
		 *
		 * @return the size of the file in bytes
		 */
		function getFileSize()
		{
			return( $this->_fileSize );
		}
		
		function setFileSize( $size )
		{
			$this->_fileSize = $size;
		}

		/**
		 * returns an object that will allow to access the metadata of this resource
		 *
		 * @see GalleryResourceImageMetadataReader
		 * @see GalleryResourceSoundMetadataReader
		 * @see GalleryResourceVideoMoetadataReader
		 * @see GalleryResourceZipMetadataReader
		 * @see GalleryResourceBaseMetadataReader
		 */
        function getMetadataReader()
        {
		    lt_include( PLOG_CLASS_PATH."class/gallery/data/galleryresourceimagemetadatareader.class.php" );
		    lt_include( PLOG_CLASS_PATH."class/gallery/data/galleryresourcesoundmetadatareader.class.php" );
		    lt_include( PLOG_CLASS_PATH."class/gallery/data/galleryresourcevideometadatareader.class.php" );
		    lt_include( PLOG_CLASS_PATH."class/gallery/data/galleryresourcezipmetadatareader.class.php" );
                
        	switch( $this->getResourceType()) {
            	case GALLERY_RESOURCE_IMAGE:
                	$reader = new GalleryResourceImageMetadataReader( $this );
                    break;
                case GALLERY_RESOURCE_SOUND:
                	$reader = new GalleryResourceSoundMetadataReader( $this );
                    break;
                case GALLERY_RESOURCE_VIDEO:
                	$reader = new GalleryResourceVideoMetadataReader( $this );
                    break;
                case GALLERY_RESOURCE_ZIP:
                	$reader = new GalleryResourceZipMetadataReader( $this );
                    break;
                default:
                	$reader = new GalleryResourceBaseMetadataReader( $this );
                    break;
            }

            return $reader;
        }

        /**
         * Returns true if this resource has a preview or false if not.
         *
         * @return True if preview available or false otherwise.
         */
        function hasPreview()
        {
        	return( $this->_flags & GALLERY_RESOURCE_PREVIEW_AVAILABLE );
        }
		
		/**
		 * returns the name of the file in disk where the preview is
		 * stored
		 *
		 * @return the path to the small preview file
		 */
		function getPreviewFileName()
		{
    		lt_include( PLOG_CLASS_PATH."class/gallery/dao/galleryresourcestorage.class.php" );	

			$config =& Config::getConfig();

			// encoding the filename if "encoded_file_name" enabled
			if( $config->getValue( "resources_naming_rule" ) == "encoded_file_name" )
				$fileName = $this->getEncodedFileName();
			else
				$fileName = $this->getFileName();
		
			// change the file extension, if the thumbnail output format is different from the original file
			if( $this->getThumbnailFormat() == THUMBNAIL_OUTPUT_FORMAT_SAME_AS_IMAGE )
				$previewFile = $fileName;
			else
				$previewFile = str_replace( ".".$this->_getFileExtension(), ".".$this->getThumbnailFormat(), $fileName );

			return $previewFile;
		}
		
		/**
		 * @private
		 */
		function _getFileExtension()
		{
			$fileName = $this->getFileName();
			if(( $extPos = strrpos( $fileName, "." )) !== false ) {					
				$fileExt = substr( $fileName, $extPos+1, strlen( $fileName ));
			}
			else {
				$fileExt = "";
			}			
			
			return( $fileExt );
		}

		/**
		 * returns the full path to the file with the medium-sized preview
		 *
		 * @return full path to the medium-sized preview
		 */
		function getMediumSizePreviewFileName()
		{
			lt_include( PLOG_CLASS_PATH."class/gallery/dao/galleryresourcestorage.class.php" );		
		
			$config =& Config::getConfig();

			// encoding the filename if "encoded_file_name" enabled
			if( $config->getValue( "resources_naming_rule" ) == "encoded_file_name" )
				$fileName = $this->getEncodedFileName();
			else
				$fileName = $this->getFileName();
			
			// change the file extension, if the thumbnail output format is different from the original file
			if( $this->getThumbnailFormat() == THUMBNAIL_OUTPUT_FORMAT_SAME_AS_IMAGE )
				$previewFile = $fileName;
			else
				$previewFile = str_replace( ".".$this->_getFileExtension(), ".".$this->getThumbnailFormat(), $fileName );

			return $previewFile;
		}

		/**
		 * returns the full path to the file with the original size
		 *
		 * @return full path to the original size
		 */
		function getOriginalSizeFileName()
		{
			lt_include( PLOG_CLASS_PATH."class/gallery/dao/galleryresourcestorage.class.php" );		
		
			$config =& Config::getConfig();

			// encoding the filename if "encoded_file_name" enabled
			if( $config->getValue( "resources_naming_rule" ) == "encoded_file_name" )
				$fileName = $this->getEncodedFileName();
			else
				$fileName = $this->getFileName();
			
			return $fileName;
		}
		
		function getNormalizedDescription()
		{
			lt_include( PLOG_CLASS_PATH."class/data/textfilter.class.php" );
			$tf = new Textfilter();
			return( $tf->normalizeText( $this->getDescription()));
		}
		
		/**
		 * @return true if the resource is an image
		 */
        function isImage()
        {
        	return( $this->_resourceType == GALLERY_RESOURCE_IMAGE );
        }

		/**
		 * @return true if the resource is a sound file
		 */
        function isSound()
        {
        	return( $this->_resourceType == GALLERY_RESOURCE_SOUND );
        }

		/**
		 * @return true if the resource file is a video
		 */
        function isVideo()
        {
        	return( $this->_resourceType == GALLERY_RESOURCE_VIDEO );
        }

		/**
		 * @return true if the resource file is a ZIP file
		 */
        function isZip()
        {
        	return( $this->_resourceType == GALLERY_RESOURCE_ZIP );
        }

		/**
		 * returns the link to the resource page
		 */
		function getResourceLink()
		{
			$blog = $this->getBlogInfo();
			$url = $blog->getBlogRequestGenerator();
			return( $url->resourceLink( $this ));			
		}

		/**
		 * returns the download link for this resource
		 */
		function getLink()
		{
			$blog = $this->getBlogInfo();
			$url = $blog->getBlogRequestGenerator();
			return( $url->resourceDownloadLink( $this ));
		}
		
		/**
		 * returns the preview link (thumbnail) for this resource if it's an image, or an empty string otherwise
		 */
		function getPreviewLink()
		{
			$link = "";
			if( $this->isImage()) {			
				$blog = $this->getBlogInfo();
				$url = $blog->getBlogRequestGenerator();
				$link = $url->resourcePreviewLink( $this );
			}
			
			return( $link );
		}
		
		/**
		 * returns the medium preview link (thumbnail) for this resource if it's an image, 
		 * or an empty string otherwise
		 */
		function getMediumPreviewLink()
		{
			$link = "";
			if( $this->isImage()) {			
				$blog = $this->getBlogInfo();
				$url = $blog->getBlogRequestGenerator();
				$link = $url->resourceMediumSizePreviewLink( $this );
			}
			
			return( $link );			
		}		
    }
?>