Gamgine.Image.PNG

A simple, pure Haskell PNG loader. Currently supports 24bit RGB(A) images with no interlacing. Also lacks support for color indexed (paletted) images.

The image is stored in a StorableArray for compatibility with OpenGL (the array supports getting Ptr Word8 to the image data using withStorableArray function).

Types

data PNGImage

Instances

Show PNGImage

Methods

showsPrec :: Int -> PNGImage -> ShowS

show :: PNGImage -> String

showList :: [PNGImage] -> ShowS

type Width = Word32

type Height = Word32

Functions

loadPNGFile :: FilePath -> IO (Either String PNGImage)

Load a PNG file, Left value contains a description of a problem as a String, if any

dimensions :: PNGImage -> (Width, Height)

Get dimensions of the image (in pixels)

imageData :: PNGImage -> StorableArray (Int, Int) Word8

Get image data as C-compatible StorableArray

hasAlphaChannel :: PNGImage -> Bool

Check if the image has alpha channel