Flying Saucer Project Release ${app.version}

org.xhtmlrenderer.util
Class ScalingOptions

java.lang.Object
  extended by org.xhtmlrenderer.util.ScalingOptions

public class ScalingOptions
extends java.lang.Object

POJO used when calling org.xhtmlrenderer.util.ImageUtil#getScaledInstance(ScalingOptions,java.awt.Image). Encapsulates a set of parameters related to scaling quality and output. Values are final once constructed, except for target width and height, which can be change and the options instance reused. There is a default constructor for average quality and performance.


Constructor Summary
ScalingOptions()
          Default scaling options, nearest neighbor interpolation, and fast downscaling.
ScalingOptions(DownscaleQuality downscalingHint, java.lang.Object interpolationHint)
          Constructor with all options.
ScalingOptions(int targetWidth, int targetHeight, int type, DownscaleQuality downscalingHint, java.lang.Object hint)
          Constructor with all options.
 
Method Summary
 void applyRenderingHints(java.awt.Graphics2D g2)
          Applies any rendering hints configured for these ScalingOptions to a Graphics2D instance before image operations are called on it.
 DownscaleQuality getDownscalingHint()
           
 java.lang.Object getRenderingHint()
           
 int getTargetHeight()
           
 int getTargetWidth()
           
 void setTargetDimensions(java.awt.Dimension dim)
           
 void setTargetHeight(int targetHeight)
           
 void setTargetWidth(int targetWidth)
           
 boolean sizeMatches(java.awt.Image img)
          Returns true if the target size specified by these options matches the size provided (e.g.
 boolean sizeMatches(int w, int h)
          Returns true if the target size specified by these options matches the size provided (e.g.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ScalingOptions

public ScalingOptions(DownscaleQuality downscalingHint,
                      java.lang.Object interpolationHint)
Constructor with all options.

Parameters:
downscalingHint - Directs downscaling quality. One of the enumerated types of DownscaleQuality such as org.xhtmlrenderer.util.ImageUtil.DOWNSCALE_FAST.
interpolationHint - Hint for interpolation to AWT image renderer, one of the Object constants from RenderingHints using java.awt.RenderingHints.KEY_INTERPOLATION

ScalingOptions

public ScalingOptions()
Default scaling options, nearest neighbor interpolation, and fast downscaling. This is fast, but not great quality.


ScalingOptions

public ScalingOptions(int targetWidth,
                      int targetHeight,
                      int type,
                      DownscaleQuality downscalingHint,
                      java.lang.Object hint)
Constructor with all options.

Parameters:
targetWidth - Target width in pixels of image once scaled
targetHeight - Target height in pixels of image once scaled
type - Type of BufferedImage to create for output; see docs for BufferedImage.BufferedImage(int,int,int)
downscalingHint - Directs downscaling quality. One of the enumerated types of DownscaleQuality such as org.xhtmlrenderer.util.ImageUtil.DOWNSCALE_FAST.
hint - Hint for interpolation to AWT image renderer, one of the Object constants from RenderingHints using java.awt.RenderingHints.KEY_INTERPOLATION
Method Detail

getDownscalingHint

public DownscaleQuality getDownscalingHint()
Returns:
ScalingOptions#ScalingOptions(int,DownscaleQuality,Object) docs.

getRenderingHint

public java.lang.Object getRenderingHint()
Returns:
ScalingOptions#ScalingOptions(int,DownscaleQuality,Object) docs.

applyRenderingHints

public void applyRenderingHints(java.awt.Graphics2D g2)
Applies any rendering hints configured for these ScalingOptions to a Graphics2D instance before image operations are called on it. These might be

Parameters:
g2 - A Graphics2D instance on which scaled images will be rendered.

sizeMatches

public boolean sizeMatches(int w,
                           int h)
Returns true if the target size specified by these options matches the size provided (e.g. image is already at target size).

Parameters:
w - an image width
h - an image height
Returns:
true if image dimensions already match target size

sizeMatches

public boolean sizeMatches(java.awt.Image img)
Returns true if the target size specified by these options matches the size provided (e.g. image is already at target size).

Parameters:
img -
Returns:
true if image dimensions already match target size

getTargetWidth

public int getTargetWidth()

getTargetHeight

public int getTargetHeight()

setTargetWidth

public void setTargetWidth(int targetWidth)

setTargetHeight

public void setTargetHeight(int targetHeight)

setTargetDimensions

public void setTargetDimensions(java.awt.Dimension dim)

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