Package org.apache.tools.ant.types.optional.image

# Class Scale

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.types.DataType
org.apache.tools.ant.types.optional.image.ImageOperation
org.apache.tools.ant.types.optional.image.TransformOperation
org.apache.tools.ant.types.optional.image.Scale

All Implemented Interfaces:
  `Cloneable`, `DrawOperation`

public class Scale extends TransformOperation implements DrawOperation

See Also:
  - `Image`

- ## Nested Class Summary

  Nested Classes
  Modifier and Type
  Class
  Description
  `static class`
  `Scale.ProportionsAttribute`
  Enumerated class for proportions attribute.

- ## Field Summary

  ### Fields inherited from class org.apache.tools.ant.types.optional.image.ImageOperation

  `instructions`

  ### Fields inherited from class org.apache.tools.ant.types.DataType

  `checked, ref`

  ### Fields inherited from class org.apache.tools.ant.ProjectComponent

  `description, location, project`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Scale()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `javax.media.jai.PlanarImage`
  `executeDrawOperation()`
  Abstract method which is intended to create an image buffer and return it so it can be drawn into another object.
  `javax.media.jai.PlanarImage`
  `executeTransformOperation(javax.media.jai.PlanarImage image)`
  Performs the transformations.
  `float`
  `getHeight()`
  Get the height.
  `float`
  `getWidth()`
  Get the width.
  `javax.media.jai.PlanarImage`
  `performScale(javax.media.jai.PlanarImage image)`
  Scale an image.
  `void`
  `setHeight(String height)`
  Sets the height of the image, either as an integer or a %.
  `void`
  `setProportions(Scale.ProportionsAttribute pa)`
  Sets the behaviour regarding the image proportions.
  `void`
  `setWidth(String width)`
  Sets the width of the image, either as an integer or a %.

  ### Methods inherited from class org.apache.tools.ant.types.optional.image.TransformOperation

  `addRectangle`

  ### Methods inherited from class org.apache.tools.ant.types.optional.image.ImageOperation

  `addDraw, addRotate, addScale, addText`

  ### Methods inherited from class org.apache.tools.ant.types.DataType

  `checkAttributesAllowed, checkChildrenAllowed, circularReference, clone, dieOnCircularReference, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, setChecked, setRefid, tooManyAttributes, toString`

  ### Methods inherited from class org.apache.tools.ant.ProjectComponent

  `getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`

  ### Methods inherited from class java.lang.Object

  `equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### Scale

    public Scale()

- ## Method Details

  - ### setProportions

    public void setProportions(Scale.ProportionsAttribute pa)
    Sets the behaviour regarding the image proportions.
    Parameters:
      `pa` - the enumerated value.

  - ### setWidth

    public void setWidth(String width)
    Sets the width of the image, either as an integer or a %. Defaults to 100%.
    Parameters:
      `width` - the value to use.

  - ### setHeight

    public void setHeight(String height)
    Sets the height of the image, either as an integer or a %. Defaults to 100%.
    Parameters:
      `height` - the value to use.

  - ### getWidth

    public float getWidth()
    Get the width.
    Returns:
      the value converted from the width string.

  - ### getHeight

    public float getHeight()
    Get the height.
    Returns:
      the value converted from the height string.

  - ### performScale

    public javax.media.jai.PlanarImage performScale(javax.media.jai.PlanarImage image)
    Scale an image.
    Parameters:
      `image` - the image to scale.
    Returns:
      the scaled image.

  - ### executeTransformOperation

    public javax.media.jai.PlanarImage executeTransformOperation(javax.media.jai.PlanarImage image)
    Performs the transformations..
    Specified by:
      `executeTransformOperation` in class `TransformOperation`
    Parameters:
      `image` - The image to perform the transformation on.
    Returns:
      the transformed image.

  - ### executeDrawOperation

    public javax.media.jai.PlanarImage executeDrawOperation()
    Abstract method which is intended to create an image buffer and return it so it can be drawn into another object. Use an Alpha channel for a "transparent" background..
    Specified by:
      `executeDrawOperation` in interface `DrawOperation`
    Returns:
      a planar image