magoffin.matt.ma2.image.jmagick
Class PngMediaHandler

java.lang.Object
  magoffin.matt.ma2.support.AbstractMediaHandler
      magoffin.matt.ma2.image.BaseImageMediaHandler
          magoffin.matt.ma2.image.jmagick.BaseJMagickMediaHandler
              magoffin.matt.ma2.image.jmagick.JpegMediaHandler
                  magoffin.matt.ma2.image.jmagick.PngMediaHandler

All Implemented Interfaces:

MediaHandler, MediaHandlerDelegate

public class PngMediaHandler
extends JpegMediaHandler

PNG media handler using JMagick.

This handler returns JPEG images unless the original image is requested, in which case the original PNG image is returned.

Version:

$Revision: 43 $ $Date: 2007-10-21 11:10:01 +1300 (Sun, 21 Oct 2007) $

Author:

Matt Magoffin (spamsqr@msqr.us)

Field Summary

Fields inherited from class magoffin.matt.ma2.image.jmagick.BaseJMagickMediaHandler

DEFAULT_OUTPUT_DEPTH

Fields inherited from class magoffin.matt.ma2.image.BaseImageMediaHandler

DEFAULT_ORIENTATION_180_VALUE, DEFAULT_ORIENTATION_90_CLOCKWISE_VALUE, DEFAULT_ORIENTATION_90_COUNTER_CLOCKWISE_VALUE, DEFAULT_ORIENTATION_METADATA_KEY, ROTATE_180, ROTATE_90_CCW, ROTATE_90_CW

Fields inherited from class magoffin.matt.ma2.support.AbstractMediaHandler

log, METADATA_PARAMETER_KEY

Constructor Summary

PngMediaHandler()
Constructor.

Method Summary

java.lang.String	getDelegateFileExtension(org.springframework.core.io.Resource mediaResource, java.lang.String mimeType, MediaItem item, MediaRequest request) Get the preferred file extension for this handler.
java.lang.String	getFileExtension(MediaItem item, MediaRequest request) Get the file extension.

Methods inherited from class magoffin.matt.ma2.image.jmagick.JpegMediaHandler

getJpeg2000UserAgentPatterns, getResponseMime, handleDelegateMediaRequest, isUseJpeg2000, setJpeg2000UserAgentPatterns, setJpeg2000UserAgentRegExp, setUseJpeg2000

Methods inherited from class magoffin.matt.ma2.image.jmagick.BaseJMagickMediaHandler

createNewMediaItem, defaultHandleRequest, defaultHandleResource, getEffect, getJmagickMediaEffectMap, getOutputDepth, handleMediaRequest, setJmagickMediaEffectMap, setOutputDepth, setupBaseItemProperties

Methods inherited from class magoffin.matt.ma2.image.BaseImageMediaHandler

getOrientation180Value, getOrientation90ClockwiseValue, getOrientation90CounterClockwiseValue, getOrientationMetadataKey, handleMetadata, needToRotate, setOrientation180Value, setOrientation90ClockwiseValue, setOrientation90CounterClockwiseValue, setOrientationMetadataKey

Methods inherited from class magoffin.matt.ma2.support.AbstractMediaHandler

applyEffects, createMetadataList, defaultHandleRequestOriginal, getDomainObjectFactory, getMediaBiz, getMediaMetadataInstance, getMime, getNoWatermarkSizes, getPreferredFileExtension, getRequestEffects, getSmetaPropertyMap, getUserBiz, needToAlter, setDomainObjectFactory, setMediaBiz, setMime, setNoWatermarkSizes, setPreferredFileExtension, setSmetaPropertyMap, setUserBiz

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PngMediaHandler

public PngMediaHandler()

Constructor.

Method Detail

getFileExtension

public java.lang.String getFileExtension(MediaItem item,
                                         MediaRequest request)

Description copied from class: AbstractMediaHandler

Get the file extension.

This method simply returns AbstractMediaHandler.getPreferredFileExtension(). Extending class may override this for request-specific handling.

Specified by:

getFileExtension in interface MediaHandler

Overrides:

getFileExtension in class JpegMediaHandler

Parameters:

item - the media item to process

request - the request

Returns:

a file extension, without the period

getDelegateFileExtension

public java.lang.String getDelegateFileExtension(org.springframework.core.io.Resource mediaResource,
                                                 java.lang.String mimeType,
                                                 MediaItem item,
                                                 MediaRequest request)

Description copied from interface: MediaHandlerDelegate

Get the preferred file extension for this handler.

The mediaResource is not the original MediaItem resource, rather it is the media resource extracted from the MediaItem, e.g. the metadata resource.

Some handlers might return a different file extension for a given request then the default file extension for their type (for example a PNG image handler that returns JPEG images when resizing the images.

Specified by:

getDelegateFileExtension in interface MediaHandlerDelegate

Overrides:

getDelegateFileExtension in class JpegMediaHandler

Parameters:

mediaResource - the media data to process

mimeType - the MIME type of the media data in mediaResource

item - the MediaItem being processed

request - the request

Returns:

a file extension, without the period