Graphics.PDF.Image

PDF Images

Images

Types

data PDFJpeg

A Jpeg PDF object

Instances

PDFXObject PDFJpeg

Defined in Graphics.PDF.Image

Methods

drawXObject :: PDFReference PDFJpeg -> Draw ()

privateDrawXObject :: PDFReference PDFJpeg -> Draw ()

data JpegFile

A Jpeg file

data RawImage

A raw image

Instances

PDFXObject RawImage

Defined in Graphics.PDF.Image

Methods

drawXObject :: PDFReference RawImage -> Draw ()

privateDrawXObject :: PDFReference RawImage -> Draw ()

data PDFFilter

Constructors

ASCIIHexDecode

ASCII85Decode

LZWDecode

FlateDecode

RunLengthDecode

CCITTFaxDecode

DCTDecode

NoFilter

Functions

createPDFJpeg :: JpegFile -> PDF (PDFReference PDFJpeg)

Use an abstract description of a Jpeg to return a PDFReference that can be used to manipulate the Jpeg in the context of the PDF document

readJpegFile :: FilePath -> IO (Either String JpegFile)

Read a JPEG file and return an abstract description of its content or an error The read is not lazy. The whole image will be loaded into memory

jpegBounds :: JpegFile -> (Int, Int)

Get the JPEG bounds

readJpegDataURL :: String -> Either String JpegFile

Reads a data URL string, and returns a JpegFile. The incoming string must be a correctly formatted data URL for a JPEG. You can convert jpeg files to data URLs at the following web site: http://dataurl.net/#dataurlmaker

createPDFRawImageFromARGB

Arguments

:: Int

Width

-> Int

Height

-> Bool

Interpolation

-> Vector Word32

ARGB pixels (A component not used y the PDF document)

-> PDF (PDFReference RawImage)

createPDFRawImageFromByteString

Arguments

:: Int

Width

-> Int

Height

-> Bool

Interpolation

-> PDFFilter

Decompression filter to be sued by the PDF reader to render the picture

-> ByteString

RGB pixels

-> PDF (PDFReference RawImage)