javax.imageio.event.IIOWriteProgressListener |
An interface used by ImageWriter
implementations to notify
callers of their image writing methods of progress.
Public Methods | |||||||||||
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Reports that the image write operation has completed.
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Reports the approximate degree of completion of the current
write call within the associated
ImageWriter . | |||||||||||
Reports that an image write operation is beginning.
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Reports that a thumbnail write operation has completed.
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Reports the approximate degree of completion of the current
thumbnail write within the associated
ImageWriter . | |||||||||||
Reports that a thumbnail write operation is beginning.
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Reports that a write has been aborted via the writer's
abort method. |
Reports that the image write operation has completed. All
ImageWriter
implementations are required to call
this method exactly once upon completion of each image write
operation.
source | the ImageWriter object calling this method.
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Reports the approximate degree of completion of the current
write
call within the associated
ImageWriter
.
The degree of completion is expressed as an index
indicating which image is being written, and a percentage
varying from 0.0F
to 100.0F
indicating how much of the current image has been output. The
percentage should ideally be calculated in terms of the
remaining time to completion, but it is usually more practical
to use a more well-defined metric such as pixels decoded or
portion of input stream consumed. In any case, a sequence of
calls to this method during a given read operation should
supply a monotonically increasing sequence of percentage
values. It is not necessary to supply the exact values
0
and 100
, as these may be inferred
by the callee from other methods.
Each particular ImageWriter
implementation may
call this method at whatever frequency it desires. A rule of
thumb is to call it around each 5 percent mark.
source | the ImageWriter object calling this method. |
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percentageDone | the approximate percentage of decoding that has been completed. |
Reports that an image write operation is beginning. All
ImageWriter
implementations are required to call
this method exactly once when beginning an image write
operation.
source | the ImageWriter object calling this
method. |
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imageIndex | the index of the image being written within its containing input file or stream. |
Reports that a thumbnail write operation has completed. All
ImageWriter
implementations are required to call
this method exactly once upon completion of each thumbnail
write operation.
source | the ImageWriter object calling this
method.
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Reports the approximate degree of completion of the current
thumbnail write within the associated ImageWriter
.
The semantics are identical to those of
imageProgress
.
source | the ImageWriter object calling this
method. |
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percentageDone | the approximate percentage of decoding that has been completed. |
Reports that a thumbnail write operation is beginning. All
ImageWriter
implementations are required to call
this method exactly once when beginning a thumbnail write
operation.
source | the ImageWrite object calling this method. |
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imageIndex | the index of the image being written within its containing input file or stream. |
thumbnailIndex | the index of the thumbnail being written. |
Reports that a write has been aborted via the writer's
abort
method. No further notifications will be
given.
source | the ImageWriter object calling this
method.
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