Package org.apache.poi.hwmf.draw

Class HwmfImageRenderer

java.lang.Object

org.apache.poi.hwmf.draw.HwmfImageRenderer

All Implemented Interfaces:

EmbeddedExtractor, ImageRenderer

public class HwmfImageRenderer
extends Object
implements ImageRenderer, EmbeddedExtractor

Helper class which is instantiated by DrawPictureShape via reflection

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.poi.sl.draw.EmbeddedExtractor

EmbeddedExtractor.EmbeddedPart

Constructor Summary

Constructors

Constructor	Description
HwmfImageRenderer()

Method Summary

Modifier and Type	Method	Description
boolean	canRender(String contentType)	Determines if this image renderer implementation supports the given contentType
boolean	drawImage(Graphics2D graphics, Rectangle2D anchor)	Render picture data into the supplied graphics
boolean	drawImage(Graphics2D graphics, Rectangle2D anchor, Insets clip)	Render picture data into the supplied graphics
Rectangle2D	getBounds()
Dimension2D	getDimension()
Iterable<EmbeddedExtractor.EmbeddedPart>	getEmbeddings()
static Iterable<EmbeddedExtractor.EmbeddedPart>	getEmbeddings(Iterable<HwmfEmbedded> embs)
GenericRecord	getGenericRecord()
BufferedImage	getImage()
BufferedImage	getImage(Dimension2D dim)
Rectangle2D	getNativeBounds()
static Rectangle2D	getOuterBounds(Rectangle2D anchor, Insets clip)
void	loadImage(byte[] data, String contentType)	Load and buffer the image
void	loadImage(InputStream data, String contentType)	Load and buffer the image
void	setAlpha(double alpha)
void	setDefaultCharset(Charset defaultCharset)	Sets the default charset to render text elements.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.poi.sl.draw.ImageRenderer

getCachedContentType, getCachedImage, setCacheInput

Constructor Details

HwmfImageRenderer

public HwmfImageRenderer()

Method Details

canRender

public boolean canRender(String contentType)

Description copied from interface: ImageRenderer

Determines if this image renderer implementation supports the given contentType

Specified by:

canRender in interface ImageRenderer

Parameters:

contentType - the image content type

Returns:

if the content type is supported

loadImage

public void loadImage(InputStream data,
 String contentType)
               throws IOException

Description copied from interface: ImageRenderer

Load and buffer the image

Specified by:

loadImage in interface ImageRenderer

Parameters:

data - the raw image stream

contentType - the content type

Throws:

IOException

loadImage

public void loadImage(byte[] data,
 String contentType)
               throws IOException

Description copied from interface: ImageRenderer

Load and buffer the image

Specified by:

loadImage in interface ImageRenderer

Parameters:

data - the raw image bytes

contentType - the content type

Throws:

IOException

getDimension

public Dimension2D getDimension()

Specified by:

getDimension in interface ImageRenderer

Returns:

the dimension of the buffered image in pixel

setAlpha

public void setAlpha(double alpha)

Specified by:

setAlpha in interface ImageRenderer

Parameters:

alpha - the alpha [0..1] to be added to the image (possibly already containing an alpha channel)

getImage

public BufferedImage getImage()

Specified by:

getImage in interface ImageRenderer

Returns:

the image as buffered image or null if image could not be loaded

getImage

public BufferedImage getImage(Dimension2D dim)

Specified by:

getImage in interface ImageRenderer

Parameters:

dim - the dimension in pixels of the returned image

Returns:

the image as buffered image or null if image could not be loaded

drawImage

public boolean drawImage(Graphics2D graphics,
 Rectangle2D anchor)

Description copied from interface: ImageRenderer

Render picture data into the supplied graphics

Specified by:

drawImage in interface ImageRenderer

Returns:

true if the picture data was successfully rendered

drawImage

public boolean drawImage(Graphics2D graphics,
 Rectangle2D anchor,
 Insets clip)

Description copied from interface: ImageRenderer

Render picture data into the supplied graphics

Specified by:

drawImage in interface ImageRenderer

Returns:

true if the picture data was successfully rendered

getOuterBounds

@Internal
public static Rectangle2D getOuterBounds(Rectangle2D anchor,
 Insets clip)

getGenericRecord

public GenericRecord getGenericRecord()

Specified by:

getGenericRecord in interface ImageRenderer

getEmbeddings

public Iterable<EmbeddedExtractor.EmbeddedPart> getEmbeddings()

Specified by:

getEmbeddings in interface EmbeddedExtractor

getEmbeddings

@Internal
public static Iterable<EmbeddedExtractor.EmbeddedPart> getEmbeddings(Iterable<HwmfEmbedded> embs)

getNativeBounds

public Rectangle2D getNativeBounds()

Specified by:

getNativeBounds in interface ImageRenderer

Returns:

the format-specific / not-normalized bounds of the image

getBounds

public Rectangle2D getBounds()

Specified by:

getBounds in interface ImageRenderer

Returns:

the bounds of the buffered image in pixel

setDefaultCharset

public void setDefaultCharset(Charset defaultCharset)

Description copied from interface: ImageRenderer

Sets the default charset to render text elements. Opposed to other windows libraries in POI this simply defaults to Windows-1252.

Specified by:

setDefaultCharset in interface ImageRenderer

Parameters:

defaultCharset - the default charset