Class DImageHeader

Inherits from:

Object

Declared in:

DImageHeader.h

Class Hierarchy

    Object
      |
      +---DImageHeader

Class Description

The DImageHeader class implements a number of methods for determining the type of an image file. Due to the fact that only small tests are performed on the image files, the determination is not full proof. In the future this will become a factory for image objects.

Last modified:

27-Feb-2005 (DImageHeader.h)

Instance Variables

private DImageHeaderType _type

the image type (DIM_UNKN,DIM_JPEG,DIM_GIF,DIM_PNG,DIM_BMP,DIM_PCX,DIM_IFF,DIM_RAS,DIM_PBM,DIM_PGM,DIM_PPM,DIM_PSD,DIM_SWF)

Method Index

• Constructors
  

  - (DImageHeader *) init

  Initialise an empty image header object

  Returns:

  the instance

  - (DImageHeader *) init :(id <DDataReadable>) file

  Initialise with a data readable

  Parameters:

  file - the file
  

  Returns:

  the instance

• Image info methods
  

  - (const char *) extension

  Return the extension for the type of image

  Returns:

  the extension (or NULL for unknown type)

  - (const char *) mime_type

  Return the mime type for the type of image

  Returns:

  the mime type (or NULL for unknown type)

  - (DImageHeaderType) type

  Return the type of the image (or DIM_UNKN for unknown)

  Returns:

  the type

• Main method
  

  - (BOOL) inspect :(id <DDataReadable>) file

  Inspect the image file

  Parameters:

  file - the file to be inspected
  

  Returns:

  success