Class FileFormat

java.lang.Object

org.eclipse.swt.internal.image.FileFormat

Direct Known Subclasses:

FileFormat.StaticImageFileFormat, SVGFileFormat

public abstract class FileFormat
extends Object

Abstract factory class for loading/unloading images from files or streams in various image file formats.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	FileFormat.StaticImageFileFormat

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	compression
static final int	DEFAULT_ZOOM
private static final List<Supplier<FileFormat>>	FORMAT_FACTORIES
(package private) LEDataInputStream	inputStream
(package private) ImageLoader	loader
private static final int	MAX_SIGNATURE_BYTES
(package private) LEDataOutputStream	outputStream

Constructor Summary

Constructors

Constructor	Description
FileFormat()

Method Summary

Modifier and Type	Method	Description
static boolean	canLoadAtZoom(DPIUtil.ElementAtZoom<InputStream> is, int targetZoom)
private static Optional<FileFormat>	determineFileFormat(LEDataInputStream stream)
static boolean	isDynamicallySizableFormat(InputStream is)
(package private) abstract boolean	isFileFormat(LEDataInputStream stream)	Return whether or not the specified input stream represents a supported file format.
static ImageData	load(InputStream is, ImageLoader loader, int width, int height)
static List<DPIUtil.ElementAtZoom<ImageData>>	load(DPIUtil.ElementAtZoom<InputStream> is, ImageLoader loader, int targetZoom)	Read the specified input stream using the specified loader, and return the device independent image array represented by the stream.
(package private) abstract List<DPIUtil.ElementAtZoom<ImageData>>	loadFromByteStream(int fileZoom, int targetZoom)	Format that do not implement FileFormat.StaticImageFileFormat MUST return ImageData with the specified targetZoom.
(package private) abstract ImageData	loadFromByteStreamBySize(int width, int height)
List<DPIUtil.ElementAtZoom<ImageData>>	loadFromStream(LEDataInputStream stream, int fileZoom, int targetZoom)	Read the specified input stream, and return the device independent image array represented by the stream.
ImageData	loadFromStreamBySize(LEDataInputStream stream, int width, int height)
static void	save(OutputStream os, int format, ImageLoader loader)	Write the device independent image array stored in the specified loader to the specified output stream using the specified file format.
(package private) abstract void	unloadIntoByteStream(ImageLoader loader)
void	unloadIntoStream(ImageLoader loader, LEDataOutputStream stream)	Write the device independent image array stored in the specified loader to the specified output stream.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

FORMAT_FACTORIES

private static final List<Supplier<FileFormat>> FORMAT_FACTORIES

DEFAULT_ZOOM

public static final int DEFAULT_ZOOM

See Also:

• Constant Field Values

MAX_SIGNATURE_BYTES

private static final int MAX_SIGNATURE_BYTES

See Also:

• Constant Field Values

inputStream

LEDataInputStream inputStream

outputStream

LEDataOutputStream outputStream

loader

ImageLoader loader

compression

int compression

Constructor Details

FileFormat

public FileFormat()

Method Details

determineFileFormat

private static Optional<FileFormat> determineFileFormat(LEDataInputStream stream)

isDynamicallySizableFormat

public static boolean isDynamicallySizableFormat(InputStream is)

isFileFormat

abstract boolean isFileFormat(LEDataInputStream stream)
                       throws IOException

Return whether or not the specified input stream represents a supported file format.

Throws:

IOException

loadFromByteStream

abstract List<DPIUtil.ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom,
 int targetZoom)

Format that do not implement FileFormat.StaticImageFileFormat MUST return ImageData with the specified targetZoom.

loadFromByteStreamBySize

abstract ImageData loadFromByteStreamBySize(int width,
 int height)

loadFromStream

public List<DPIUtil.ElementAtZoom<ImageData>> loadFromStream(LEDataInputStream stream,
 int fileZoom,
 int targetZoom)

Read the specified input stream, and return the device independent image array represented by the stream.

loadFromStreamBySize

public ImageData loadFromStreamBySize(LEDataInputStream stream,
 int width,
 int height)

load

public static List<DPIUtil.ElementAtZoom<ImageData>> load(DPIUtil.ElementAtZoom<InputStream> is,
 ImageLoader loader,
 int targetZoom)

Read the specified input stream using the specified loader, and return the device independent image array represented by the stream.

load

public static ImageData load(InputStream is,
 ImageLoader loader,
 int width,
 int height)

canLoadAtZoom

public static boolean canLoadAtZoom(DPIUtil.ElementAtZoom<InputStream> is,
 int targetZoom)

save

public static void save(OutputStream os,
 int format,
 ImageLoader loader)

Write the device independent image array stored in the specified loader to the specified output stream using the specified file format.

unloadIntoByteStream

abstract void unloadIntoByteStream(ImageLoader loader)

unloadIntoStream

public void unloadIntoStream(ImageLoader loader,
 LEDataOutputStream stream)

Write the device independent image array stored in the specified loader to the specified output stream.