Class ReplicateScaleFilter
- All Implemented Interfaces:
ImageConsumer,Cloneable
- Direct Known Subclasses:
AreaAveragingScaleFilter
It is meant to be used in conjunction with a FilteredImageSource object to produce scaled versions of existing images. Due to implementation dependencies, there may be differences in pixel values of an image filtered on different platforms.
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected intThe target height to scale the image.protected intThe target width to scale the image.protected ObjectAbytearray initialized with a size ofdestWidthand used to deliver a row of pixel data to theImageConsumer.protected int[]Anintarray containing information about a column of pixels.protected intThe height of the source image.protected int[]Anintarray containing information about a row of pixels.protected intThe width of the source image.Fields declared in class java.awt.image.ImageFilter
consumerFields declared in interface java.awt.image.ImageConsumer
COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT -
Constructor Summary
ConstructorsConstructorDescriptionReplicateScaleFilter(int width, int height) Constructs a ReplicateScaleFilter that scales the pixels from its source Image as specified by the width and height parameters. -
Method Summary
Modifier and TypeMethodDescriptionvoidsetDimensions(int w, int h) Override the dimensions of the source image and pass the dimensions of the new scaled size to the ImageConsumer.voidsetPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int off, int scansize) Choose which rows and columns of the delivered byte pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.voidsetPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int off, int scansize) Choose which rows and columns of the delivered int pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.voidsetProperties(Hashtable<?, ?> props) Passes along the properties from the source object after adding a property indicating the scale applied.Methods declared in class java.awt.image.ImageFilter
clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setHints
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Field Details
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srcWidth
protected int srcWidthThe width of the source image. -
srcHeight
protected int srcHeightThe height of the source image. -
destWidth
protected int destWidthThe target width to scale the image. -
destHeight
protected int destHeightThe target height to scale the image. -
srcrows
protected int[] srcrowsAnintarray containing information about a row of pixels. -
srccols
protected int[] srccolsAnintarray containing information about a column of pixels. -
outpixbuf
Abytearray initialized with a size ofdestWidthand used to deliver a row of pixel data to theImageConsumer.
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Constructor Details
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ReplicateScaleFilter
public ReplicateScaleFilter(int width, int height) Constructs a ReplicateScaleFilter that scales the pixels from its source Image as specified by the width and height parameters.- Parameters:
width- the target width to scale the imageheight- the target height to scale the image- Throws:
IllegalArgumentException- ifwidthequals zero orheightequals zero
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Method Details
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setProperties
Passes along the properties from the source object after adding a property indicating the scale applied. This method invokessuper.setProperties, which might result in additional properties being added.Note: This method is intended to be called by the
ImageProducerof theImagewhose pixels are being filtered. Developers using this class to filter pixels from an image should avoid calling this method directly since that operation could interfere with the filtering operation.- Specified by:
setPropertiesin interfaceImageConsumer- Overrides:
setPropertiesin classImageFilter- Parameters:
props- the properties from the source object
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setDimensions
public void setDimensions(int w, int h) Override the dimensions of the source image and pass the dimensions of the new scaled size to the ImageConsumer.Note: This method is intended to be called by the
ImageProducerof theImagewhose pixels are being filtered. Developers using this class to filter pixels from an image should avoid calling this method directly since that operation could interfere with the filtering operation.- Specified by:
setDimensionsin interfaceImageConsumer- Overrides:
setDimensionsin classImageFilter- Parameters:
w- the width of the source imageh- the height of the source image- See Also:
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setPixels
public void setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int off, int scansize) Choose which rows and columns of the delivered byte pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.Note: This method is intended to be called by the
ImageProducerof theImagewhose pixels are being filtered. Developers using this class to filter pixels from an image should avoid calling this method directly since that operation could interfere with the filtering operation.- Specified by:
setPixelsin interfaceImageConsumer- Overrides:
setPixelsin classImageFilter- Parameters:
x- the X coordinate of the upper-left corner of the area of pixels to be sety- the Y coordinate of the upper-left corner of the area of pixels to be setw- the width of the area of pixelsh- the height of the area of pixelsmodel- the specifiedColorModelpixels- the array of pixelsoff- the offset into thepixelsarrayscansize- the distance from one row of pixels to the next in thepixelsarray- See Also:
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setPixels
public void setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int off, int scansize) Choose which rows and columns of the delivered int pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.Note: This method is intended to be called by the
ImageProducerof theImagewhose pixels are being filtered. Developers using this class to filter pixels from an image should avoid calling this method directly since that operation could interfere with the filtering operation.- Specified by:
setPixelsin interfaceImageConsumer- Overrides:
setPixelsin classImageFilter- Parameters:
x- the X coordinate of the upper-left corner of the area of pixels to be sety- the Y coordinate of the upper-left corner of the area of pixels to be setw- the width of the area of pixelsh- the height of the area of pixelsmodel- the specifiedColorModelpixels- the array of pixelsoff- the offset into thepixelsarrayscansize- the distance from one row of pixels to the next in thepixelsarray- See Also:
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