|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectjavax.imageio.spi.IIOServiceProvider
javax.imageio.spi.ImageInputStreamSpi
public abstract class ImageInputStreamSpi
An abstract superclass for service providers that create image input streams for a file, URL, byte array or any other source.
Field Summary | |
---|---|
protected Class<?> |
inputClass
Indicates which kind of input is processable by the streams created by createInputStreamInstance(Object) . |
Fields inherited from class javax.imageio.spi.IIOServiceProvider |
---|
vendorName, version |
Constructor Summary | |
---|---|
protected |
ImageInputStreamSpi()
Constructs a service provider for image input streams, given no parameters. |
|
ImageInputStreamSpi(String vendorName,
String version,
Class<?> inputClass)
Constructs a service provider for image input streams, given the vendor name and a version string. |
Method Summary | |
---|---|
boolean |
canUseCacheFile()
Determines whether ImageInputStreams created
by this service provider benefit from using a cache file. |
ImageInputStream |
createInputStreamInstance(Object input)
|
abstract ImageInputStream |
createInputStreamInstance(Object input,
boolean useCache,
File cacheDir)
|
Class<?> |
getInputClass()
Determines which kind of input is processable by the streams created by createInputStreamInstance(Object) . |
boolean |
needsCacheFile()
Determines whether ImageInputStreams created
by this service provider require the use of a cache file. |
Methods inherited from class javax.imageio.spi.IIOServiceProvider |
---|
getDescription, getVendorName, getVersion, onDeregistration, onRegistration |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected Class<?> inputClass
createInputStreamInstance(Object)
.
Constructor Detail |
---|
protected ImageInputStreamSpi()
IIOServiceProvider.vendorName
,
IIOServiceProvider.version
and inputClass
to non-null values.
public ImageInputStreamSpi(String vendorName, String version, Class<?> inputClass)
IllegalArgumentException
- if vendorName
or version
is null
.Method Detail |
---|
public Class<?> getInputClass()
createInputStreamInstance(Object)
.
public boolean canUseCacheFile()
ImageInputStreams
created
by this service provider benefit from using a cache file.
The default behavior is to return false
.
true
if the created streams are faster or
need less memory when a cache file is being used;
false
if no positive effect results from the cache
file.public boolean needsCacheFile()
ImageInputStreams
created
by this service provider require the use of a cache file.
The default behavior is to return false
.
true
if the created streams can only work
when a cache file is being used; false
if no cache
file is needed.public abstract ImageInputStream createInputStreamInstance(Object input, boolean useCache, File cacheDir) throws IOException
IOException
public ImageInputStream createInputStreamInstance(Object input) throws IOException
IOException
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |