Package de.xima.fc.common.image

Interface IImageThumbnailGenerator

All Superinterfaces:

Serializable

All Known Implementing Classes:

CropScaleImageThumbnailGenerator

public interface IImageThumbnailGenerator
extends Serializable

Interface for objects that can generate thumbnails for images.

Since:

8.3.0

Author:

XIMA MEDIA GmbH

Method Summary

Modifier and Type	Method	Description
TypedByteArray	generateThumbnail(byte[] data, ImageThumbnailGeneratorConstraints constraints)	Generate a thumbnail for the given image data.
TypedFile	generateThumbnail(String sourceFileName, InputStream sourceImage, Path outputLocation, ImageThumbnailGeneratorConstraints constraints)	Generate a thumbnail for the given image file, and stores it at the specified output location.
TypedFile	generateThumbnail(Path sourceImage, Path outputLocation, ImageThumbnailGeneratorConstraints constraints)	Generate a thumbnail for the given image file, and stores it at the specified output location.

Method Detail

generateThumbnail

TypedByteArray generateThumbnail(byte[] data,
                                 ImageThumbnailGeneratorConstraints constraints)
                          throws IOException

Generate a thumbnail for the given image data.

Parameters:

data - The image data.

constraints - Requested constraints on the thumbnail generation. May or may not be respected by the implementation. null if no constraints are specified.

Returns:

The generated thumbnail, including its content type (MIME type).

Throws:

IOException - If the thumbnail could not be generated.

generateThumbnail

TypedFile generateThumbnail(Path sourceImage,
                            Path outputLocation,
                            ImageThumbnailGeneratorConstraints constraints)
                     throws IOException

Generate a thumbnail for the given image file, and stores it at the specified output location. The output location may be either an existing directory, in which case a new file is created within that directory, or a file path. If the file exists, it is overwritten.

Parameters:

sourceImage - The image file for which to generate a thumbnail.

outputLocation - Where to store the thumbnail. Either an existing folder or a file path.

constraints - Requested constraints on the thumbnail generation. May or may not be respected by the implementation. null if no constraints are specified.

Returns:

The generated thumbnail file.

Throws:

IOException - If the thumbnail could not be generated.

generateThumbnail

TypedFile generateThumbnail(String sourceFileName,
                            InputStream sourceImage,
                            Path outputLocation,
                            ImageThumbnailGeneratorConstraints constraints)
                     throws IOException

Generate a thumbnail for the given image file, and stores it at the specified output location. The output location may be either an existing directory, in which case a new file is created within that directory, or a file path. If the file exists, it is overwritten.

Parameters:

sourceFileName - The name of the image file for which to generate a thumbnail.

sourceImage - The data of the image file for which to generate a thumbnail.

outputLocation - Where to store the thumbnail. Either an existing folder or a file path.

constraints - Requested constraints on the thumbnail generation. May or may not be respected by the implementation. null if no constraints are specified.

Returns:

The generated thumbnail file.

Throws:

IOException - If the thumbnail could not be generated.