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 SummaryFieldsModifier 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.ImageFilterconsumerFields declared in interface java.awt.image.ImageConsumerCOMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT
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Constructor SummaryConstructorsConstructorDescriptionReplicateScaleFilter(int width, int height) Constructs a ReplicateScaleFilter that scales the pixels from its source Image as specified by the width and height parameters.
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Method SummaryModifier 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.ImageFilterclone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setHints
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Field Details- 
srcWidthprotected int srcWidthThe width of the source image.
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srcHeightprotected int srcHeightThe height of the source image.
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destWidthprotected int destWidthThe target width to scale the image.
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destHeightprotected int destHeightThe target height to scale the image.
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srcrowsprotected int[] srcrowsAnintarray containing information about a row of pixels.
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srccolsprotected int[] srccolsAnintarray containing information about a column of pixels.
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outpixbufAbytearray initialized with a size ofdestWidthand used to deliver a row of pixel data to theImageConsumer.
 
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Constructor Details- 
ReplicateScaleFilterpublic 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 image
- height- the target height to scale the image
- Throws:
- IllegalArgumentException- if- widthequals zero or- heightequals zero
 
 
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Method Details- 
setPropertiesPasses 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 interface- ImageConsumer
- Overrides:
- setPropertiesin class- ImageFilter
- Parameters:
- props- the properties from the source object
 
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setDimensionspublic 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 interface- ImageConsumer
- Overrides:
- setDimensionsin class- ImageFilter
- Parameters:
- w- the width of the source image
- h- the height of the source image
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setPixelspublic 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 interface- ImageConsumer
- Overrides:
- setPixelsin class- ImageFilter
- Parameters:
- x- the X coordinate of the upper-left corner of the area of pixels to be set
- y- the Y coordinate of the upper-left corner of the area of pixels to be set
- w- the width of the area of pixels
- h- the height of the area of pixels
- model- the specified- ColorModel
- pixels- the array of pixels
- off- the offset into the- pixelsarray
- scansize- the distance from one row of pixels to the next in the- pixelsarray
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setPixelspublic 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 interface- ImageConsumer
- Overrides:
- setPixelsin class- ImageFilter
- Parameters:
- x- the X coordinate of the upper-left corner of the area of pixels to be set
- y- the Y coordinate of the upper-left corner of the area of pixels to be set
- w- the width of the area of pixels
- h- the height of the area of pixels
- model- the specified- ColorModel
- pixels- the array of pixels
- off- the offset into the- pixelsarray
- scansize- the distance from one row of pixels to the next in the- pixelsarray
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