Scale (Apache Ant API)
Keywords: org.apache.tools.ant.types.optional.image.Scale class

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## 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:
  java.lang.Cloneable, DrawOperation

    public class Scale

extends TransformOperation
implements DrawOperation

See Also:
  `Image`

Nested Class Summary
`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
`Scale()`

Method Summary
`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(java.lang.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(java.lang.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, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, 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 Detail

### Scale

    public Scale()

Method Detail

### setProportions

    public void setProportions(Scale.ProportionsAttribute pa)

  Sets the behaviour regarding the image proportions.

  Parameters:
    `pa` - the enumerated value.

### setWidth

    public void setWidth(java.lang.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(java.lang.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

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