Copyright	(c) 2006-2016 alpheccar.org
License	BSD-style
Maintainer	misc@NOSPAMalpheccar.org
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Graphics.PDF.Image

Contents

Images
- Types
- Functions

Description

PDF Images

Synopsis

data PDFJpeg
data JpegFile
data RawImage
data PDFFilter
- = ASCIIHexDecode
- | ASCII85Decode
- | LZWDecode
- | FlateDecode
- | RunLengthDecode
- | CCITTFaxDecode
- | DCTDecode
- | NoFilter
createPDFJpeg :: JpegFile -> PDF (PDFReference PDFJpeg)
readJpegFile :: FilePath -> IO (Either String JpegFile)
jpegBounds :: JpegFile -> (Int, Int)
readJpegDataURL :: String -> Either String JpegFile
createPDFRawImageFromARGB :: Int -> Int -> Bool -> Vector Word32 -> PDF (PDFReference RawImage)
createPDFRawImageFromByteString :: Int -> Int -> Bool -> PDFFilter -> ByteString -> PDF (PDFReference RawImage)

Images

Types

data PDFJpeg Source #

A Jpeg PDF object

Instances

PDFXObject PDFJpeg Source #
Instance details Defined in Graphics.PDF.Image Methods drawXObject :: PDFReference PDFJpeg -> Draw () Source # privateDrawXObject :: PDFReference PDFJpeg -> Draw ()

data JpegFile Source #

A Jpeg file

data RawImage Source #

A raw image

Instances

PDFXObject RawImage Source #
Instance details Defined in Graphics.PDF.Image Methods drawXObject :: PDFReference RawImage -> Draw () Source # privateDrawXObject :: PDFReference RawImage -> Draw ()

data PDFFilter Source #

Constructors

ASCIIHexDecode
ASCII85Decode
LZWDecode
FlateDecode
RunLengthDecode
CCITTFaxDecode
DCTDecode
NoFilter

Functions

createPDFJpeg :: JpegFile -> PDF (PDFReference PDFJpeg) Source #

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) Source #

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) Source #

Get the JPEG bounds

readJpegDataURL :: String -> Either String JpegFile Source #

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 Source #

Arguments

:: Int	Width
-> Int	Height
-> Bool	Interpolation
-> Vector Word32	ARGB pixels (A component not used y the PDF document)
-> PDF (PDFReference RawImage)

createPDFRawImageFromByteString Source #

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)