gnu.javax.imageio.png

Class PNGImageReader


public class PNGImageReader
extends ImageReader

The ImageIO ImageReader for PNG images.

Field Summary

Fields inherited from class javax.imageio.ImageReader

availableLocales, ignoreMetadata, input, locale, minIndex, originatingProvider, progressListeners, seekForwardOnly, updateListeners, warningListeners, warningLocales

Constructor Summary

PNGImageReader(PNGImageReaderSpi spi)
Creates a new instance.

Method Summary

int
getHeight(int imageIndex)
Returns the height of the image.
IIOMetadata
getImageMetadata(int imageIndex)
Iterator<E>
getImageTypes(int imageIndex)
Returns the image types for the image.
int
getNumImages(boolean allowSearch)
Returns the number of images in the stream.
IIOMetadata
getStreamMetadata()
int
getWidth(int imageIndex)
Returns the width of the image.
BufferedImage
read(int imageIndex, ImageReadParam param)
Reads the image.
void
setInput(Object input, boolean seekForwardOnly, boolean ignoreMetadata)
Sets the input and checks the input parameter.

Methods inherited from class javax.imageio.ImageReader

abort, abortRequested, addIIOReadProgressListener, addIIOReadUpdateListener, addIIOReadWarningListener, canReadRaster, checkReadParamBandSettings, clearAbortRequest, computeRegions, dispose, getAspectRatio, getAvailableLocales, getDefaultReadParam, getDestination, getFormatName, getHeight, getImageMetadata, getImageMetadata, getImageTypes, getInput, getLocale, getMinIndex, getNumImages, getNumThumbnails, getOriginatingProvider, getRawImageType, getSourceRegion, getStreamMetadata, getStreamMetadata, getThumbnailHeight, getThumbnailWidth, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, getWidth, hasThumbnails, isIgnoringMetadata, isImageTiled, isRandomAccessEasy, isSeekForwardOnly, processImageComplete, processImageProgress, processImageStarted, processImageUpdate, processPassComplete, processPassStarted, processReadAborted, processSequenceComplete, processSequenceStarted, processThumbnailComplete, processThumbnailPassComplete, processThumbnailPassStarted, processThumbnailProgress, processThumbnailStarted, processThumbnailUpdate, processWarningOccurred, processWarningOccurred, read, read, readAll, readAll, readAsRenderedImage, readRaster, readThumbnail, readTile, readTileRaster, readerSupportsThumbnails, removeAllIIOReadProgressListeners, removeAllIIOReadUpdateListeners, removeAllIIOReadWarningListeners, removeIIOReadProgressListener, removeIIOReadUpdateListener, removeIIOReadWarningListener, reset, setInput, setInput, setInput, setLocale

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PNGImageReader

public PNGImageReader(PNGImageReaderSpi spi)
Creates a new instance.
Parameters:
spi - the corresponding ImageReaderSpi

Method Details

getHeight

public int getHeight(int imageIndex)
            throws IOException
Returns the height of the image.
Overrides:
getHeight in interface ImageReader

getImageMetadata

public IIOMetadata getImageMetadata(int imageIndex)
            throws IOException
Overrides:
getImageMetadata in interface ImageReader

getImageTypes

public Iterator<E> getImageTypes(int imageIndex)
            throws IOException
Returns the image types for the image.
Overrides:
getImageTypes in interface ImageReader

getNumImages

public int getNumImages(boolean allowSearch)
            throws IOException
Returns the number of images in the stream.
Overrides:
getNumImages in interface ImageReader
Returns:
the number of images in the stream

getStreamMetadata

public IIOMetadata getStreamMetadata()
            throws IOException
Overrides:
getStreamMetadata in interface ImageReader

getWidth

public int getWidth(int imageIndex)
            throws IOException
Returns the width of the image.
Overrides:
getWidth in interface ImageReader
Parameters:
imageIndex - the index of the image
Returns:
the width of the image

read

public BufferedImage read(int imageIndex,
                          ImageReadParam param)
            throws IOException
Reads the image.
Overrides:
read in interface ImageReader
Parameters:
imageIndex - the index of the image to read
param - additional parameters

setInput

public void setInput(Object input,
                     boolean seekForwardOnly,
                     boolean ignoreMetadata)
Sets the input and checks the input parameter.
Overrides:
setInput in interface ImageReader

PNGImageReader.java -- The ImageIO ImageReader for PNG Copyright (C) 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.