JavaTM 2 Platform Std. Ed. v1.4.2
java.awt.image
Interface RenderedImage
- All Known Subinterfaces:
- WritableRenderedImage
- All Known Implementing Classes:
- BufferedImage
- public interface RenderedImage
RenderedImage is a common interface for objects which contain
or can produce image data in the form of Rasters. The image
data may be stored/produced as a single tile or a regular array
of tiles.
Method Summary |
WritableRaster |
copyData(WritableRaster raster)
Computes an arbitrary rectangular region of the RenderedImage
and copies it into a caller-supplied WritableRaster. |
ColorModel |
getColorModel()
Returns the ColorModel associated with this image. |
Raster |
getData()
Returns the image as one large tile (for tile based
images this will require fetching the whole image
and copying the image data over). |
Raster |
getData(Rectangle rect)
Computes and returns an arbitrary region of the RenderedImage. |
int |
getHeight()
Returns the height of the RenderedImage. |
int |
getMinTileX()
Returns the minimum tile index in the X direction. |
int |
getMinTileY()
Returns the minimum tile index in the Y direction. |
int |
getMinX()
Returns the minimum X coordinate (inclusive) of the RenderedImage. |
int |
getMinY()
Returns the minimum Y coordinate (inclusive) of the RenderedImage. |
int |
getNumXTiles()
Returns the number of tiles in the X direction. |
int |
getNumYTiles()
Returns the number of tiles in the Y direction. |
Object |
getProperty(String name)
Gets a property from the property set of this image. |
String[] |
getPropertyNames()
Returns an array of names recognized by
getProperty(String)
or null , if no property names are recognized. |
SampleModel |
getSampleModel()
Returns the SampleModel associated with this image. |
Vector |
getSources()
Returns a vector of RenderedImages that are the immediate sources of
image data for this RenderedImage. |
Raster |
getTile(int tileX,
int tileY)
Returns tile (tileX, tileY). |
int |
getTileGridXOffset()
Returns the X offset of the tile grid relative to the origin,
i.e., the X coordinate of the upper-left pixel of tile (0, 0). |
int |
getTileGridYOffset()
Returns the Y offset of the tile grid relative to the origin,
i.e., the Y coordinate of the upper-left pixel of tile (0, 0). |
int |
getTileHeight()
Returns the tile height in pixels. |
int |
getTileWidth()
Returns the tile width in pixels. |
int |
getWidth()
Returns the width of the RenderedImage. |
getSources
public Vector getSources()
- Returns a vector of RenderedImages that are the immediate sources of
image data for this RenderedImage. This method returns null if
the RenderedImage object has no information about its immediate
sources. It returns an empty Vector if the RenderedImage object has
no immediate sources.
- Returns:
- a Vector of
RenderedImage objects.
getProperty
public Object getProperty(String name)
- Gets a property from the property set of this image. The set of
properties and whether it is immutable is determined by the
implementing class. This method returns
java.awt.Image.UndefinedProperty if the specified property is
not defined for this RenderedImage.
- Parameters:
name - the name of the property
- Returns:
- the property indicated by the specified name.
- See Also:
Image.UndefinedProperty
getPropertyNames
public String[] getPropertyNames()
- Returns an array of names recognized by
getProperty(String)
or null , if no property names are recognized.
- Returns:
- a
String array containing all of the
property names that getProperty(String) recognizes;
or null if no property names are recognized.
getColorModel
public ColorModel getColorModel()
- Returns the ColorModel associated with this image. All Rasters
returned from this image will have this as their ColorModel. This
can return null.
- Returns:
- the
ColorModel of this image.
getSampleModel
public SampleModel getSampleModel()
- Returns the SampleModel associated with this image. All Rasters
returned from this image will have this as their SampleModel.
- Returns:
- the
SampleModel of this image.
getWidth
public int getWidth()
- Returns the width of the RenderedImage.
- Returns:
- the width of this
RenderedImage .
getHeight
public int getHeight()
- Returns the height of the RenderedImage.
- Returns:
- the height of this
RenderedImage .
getMinX
public int getMinX()
- Returns the minimum X coordinate (inclusive) of the RenderedImage.
- Returns:
- the X coordinate of this
RenderedImage .
getMinY
public int getMinY()
- Returns the minimum Y coordinate (inclusive) of the RenderedImage.
- Returns:
- the Y coordinate of this
RenderedImage .
getNumXTiles
public int getNumXTiles()
- Returns the number of tiles in the X direction.
- Returns:
- the number of tiles in the X direction.
getNumYTiles
public int getNumYTiles()
- Returns the number of tiles in the Y direction.
- Returns:
- the number of tiles in the Y direction.
getMinTileX
public int getMinTileX()
- Returns the minimum tile index in the X direction.
- Returns:
- the minimum tile index in the X direction.
getMinTileY
public int getMinTileY()
- Returns the minimum tile index in the Y direction.
- Returns:
- the minimum tile index in the X direction.
getTileWidth
public int getTileWidth()
- Returns the tile width in pixels. All tiles must have the same
width.
- Returns:
- the tile width in pixels.
getTileHeight
public int getTileHeight()
- Returns the tile height in pixels. All tiles must have the same
height.
- Returns:
- the tile height in pixels.
getTileGridXOffset
public int getTileGridXOffset()
- Returns the X offset of the tile grid relative to the origin,
i.e., the X coordinate of the upper-left pixel of tile (0, 0).
(Note that tile (0, 0) may not actually exist.)
- Returns:
- the X offset of the tile grid relative to the origin.
getTileGridYOffset
public int getTileGridYOffset()
- Returns the Y offset of the tile grid relative to the origin,
i.e., the Y coordinate of the upper-left pixel of tile (0, 0).
(Note that tile (0, 0) may not actually exist.)
- Returns:
- the Y offset of the tile grid relative to the origin.
getTile
public Raster getTile(int tileX,
int tileY)
- Returns tile (tileX, tileY). Note that tileX and tileY are indices
into the tile array, not pixel locations. The Raster that is returned
is live and will be updated if the image is changed.
- Parameters:
tileX - the X index of the requested tile in the tile arraytileY - the Y index of the requested tile in the tile array
- Returns:
- the tile given the specified indices.
getData
public Raster getData()
- Returns the image as one large tile (for tile based
images this will require fetching the whole image
and copying the image data over). The Raster returned is
a copy of the image data and will not be updated if the image
is changed.
- Returns:
- the image as one large tile.
getData
public Raster getData(Rectangle rect)
- Computes and returns an arbitrary region of the RenderedImage.
The Raster returned is a copy of the image data and will not
be updated if the image is changed.
- Parameters:
rect - the region of the RenderedImage to be returned.
- Returns:
- the region of the
RenderedImage
indicated by the specified Rectangle .
copyData
public WritableRaster copyData(WritableRaster raster)
- Computes an arbitrary rectangular region of the RenderedImage
and copies it into a caller-supplied WritableRaster. The region
to be computed is determined from the bounds of the supplied
WritableRaster. The supplied WritableRaster must have a
SampleModel that is compatible with this image. If raster is null,
an appropriate WritableRaster is created.
- Parameters:
raster - a WritableRaster to hold the returned portion of the
image, or null.
- Returns:
- a reference to the supplied or created WritableRaster.
Copyright 2003 Sun Microsystems, Inc. All rights reserved
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