Package org.apache.xmlgraphics.image.codec.png

Class PNGRed

java.lang.Object

org.apache.xmlgraphics.image.rendered.AbstractRed

org.apache.xmlgraphics.image.codec.png.PNGRed

All Implemented Interfaces:

java.awt.image.RenderedImage, CachableRed

public class PNGRed
extends AbstractRed

Version:

$Id: PNGRed.java 1732018 2016-02-24 04:51:06Z gadams $

Field Summary

Fields

Modifier and Type	Field	Description
static int	PNG_COLOR_GRAY
static int	PNG_COLOR_GRAY_ALPHA
static int	PNG_COLOR_PALETTE
static int	PNG_COLOR_RGB
static int	PNG_COLOR_RGB_ALPHA
static int	PNG_FILTER_AVERAGE
static int	PNG_FILTER_NONE
static int	PNG_FILTER_PAETH
static int	PNG_FILTER_SUB
static int	PNG_FILTER_UP

Fields inherited from class org.apache.xmlgraphics.image.rendered.AbstractRed

cm, minTileX, minTileY, numXTiles, numYTiles, props, sm, srcs, tileGridXOff, tileGridYOff, tileHeight, tileWidth

Constructor Summary

Constructors

Constructor	Description
PNGRed(java.io.InputStream stream)
PNGRed(java.io.InputStream stream, PNGDecodeParam decodeParam)

Method Summary

Modifier and Type	Method	Description
java.awt.image.WritableRaster	copyData(java.awt.image.WritableRaster wr)
static java.awt.image.ColorModel	createComponentColorModel(java.awt.image.SampleModel sm)	A convenience method to create an instance of ComponentColorModel suitable for use with the given SampleModel.
java.awt.image.Raster	getTile(int tileX, int tileY)

Methods inherited from class org.apache.xmlgraphics.image.rendered.AbstractRed

copyBand, copyToRaster, getBounds, getColorModel, getData, getData, getDependencyRegion, getDirtyRegion, getHeight, getMinTileX, getMinTileY, getMinX, getMinY, getNumXTiles, getNumYTiles, getProperty, getPropertyNames, getSampleModel, getSources, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, getWidth, getXTile, getYTile, init, init, makeTile, updateTileGridInfo

Methods inherited from class java.lang.Object

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

Field Detail

PNG_COLOR_GRAY

public static final int PNG_COLOR_GRAY

See Also:

Constant Field Values

PNG_COLOR_RGB

public static final int PNG_COLOR_RGB

See Also:

Constant Field Values

PNG_COLOR_PALETTE

public static final int PNG_COLOR_PALETTE

See Also:

Constant Field Values

PNG_COLOR_GRAY_ALPHA

public static final int PNG_COLOR_GRAY_ALPHA

See Also:

Constant Field Values

PNG_COLOR_RGB_ALPHA

public static final int PNG_COLOR_RGB_ALPHA

See Also:

Constant Field Values

PNG_FILTER_NONE

public static final int PNG_FILTER_NONE

See Also:

Constant Field Values

PNG_FILTER_SUB

public static final int PNG_FILTER_SUB

See Also:

Constant Field Values

PNG_FILTER_UP

public static final int PNG_FILTER_UP

See Also:

Constant Field Values

PNG_FILTER_AVERAGE

public static final int PNG_FILTER_AVERAGE

See Also:

Constant Field Values

PNG_FILTER_PAETH

public static final int PNG_FILTER_PAETH

See Also:

Constant Field Values

Constructor Detail

PNGRed

public PNGRed(java.io.InputStream stream)
       throws java.io.IOException

Throws:

java.io.IOException

PNGRed

public PNGRed(java.io.InputStream stream,
              PNGDecodeParam decodeParam)
       throws java.io.IOException

Throws:

java.io.IOException

Method Detail

createComponentColorModel

public static java.awt.image.ColorModel createComponentColorModel(java.awt.image.SampleModel sm)

A convenience method to create an instance of ComponentColorModel suitable for use with the given SampleModel. The SampleModel should have a data type of DataBuffer.TYPE_BYTE, TYPE_USHORT, or TYPE_INT and between 1 and 4 bands. Depending on the number of bands of the SampleModel, either a gray, gray+alpha, rgb, or rgb+alpha ColorModel is returned.

copyData

public java.awt.image.WritableRaster copyData(java.awt.image.WritableRaster wr)

getTile

public java.awt.image.Raster getTile(int tileX,
                                     int tileY)

Specified by:

getTile in interface java.awt.image.RenderedImage

Overrides:

getTile in class AbstractRed