{-# LINE 2 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
{-# LANGUAGE OverloadedStrings #-}

{-# LINE 3 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
{-# LANGUAGE EmptyDataDecls #-}

{-# LINE 4 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Pixbuf
--
-- Author : Vincenzo Ciancia, Axel Simon
--
-- Created: 26 March 2002
--
-- Copyright (C) 2002-2005 Axel Simon, Vincenzo Ciancia
--
-- This library is free software; you can redistribute it and/or
-- modify it under the terms of the GNU Lesser General Public
-- License as published by the Free Software Foundation; either
-- version 2.1 of the License, or (at your option) any later version.
--
-- This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- Lesser General Public License for more details.
--
-- TODO
--
-- if anybody writes an image manipulation program, do the checker board
-- functions: gdk_pixbuf_composite_color_simple and
-- gdk_pixbuf_composite_color. Moreover, do: pixbuf_saturate_and_pixelate
--
--
-- pixbuf loader
--
-- module interface
--
-- rendering function for Bitmaps and Pixmaps when the latter are added
--
-- |
-- Maintainer : gtk2hs-users@lists.sourceforge.net
-- Stability : provisional
-- Portability : portable (depends on GHC)
--
-- 'Pixbuf's are bitmap images in memory.
--
-- * A Pixbuf is used to represent images. It contains information
-- about the image's pixel data, its color space, bits per sample, width
-- and height, and the rowstride or number of bytes between rows.
--
-- * This module contains functions to scale and crop
-- 'Pixbuf's and to scale and crop a 'Pixbuf' and
-- compose the result with an existing image.
--
-- * 'Pixbuf's can be displayed on screen by either creating an 'Image' that
-- from the 'Pixbuf' or by rendering (part of) the 'Pixbuf' into a
-- vanilla widget like 'DrawWindow' using
-- 'Graphics.UI.Gtk.Gdk.Drawable.drawPixbuf'.
--
module Graphics.UI.Gtk.Gdk.Pixbuf (
-- * Class Hierarchy
-- |
-- @
-- | 'GObject'
-- | +----Pixbuf
-- @

-- * Types
  Pixbuf,
  PixbufClass,
  castToPixbuf, gTypePixbuf,
  toPixbuf,
  PixbufError(..),
  Colorspace(..),

-- * Constructors
  pixbufNew,
  pixbufNewFromData,
  pixbufNewFromFile,

  pixbufNewFromFileAtSize,


  pixbufNewFromFileAtScale,


  pixbufNewFromSurface,
  pixbufNewFromWindow,

  pixbufNewFromInline,
  InlineImage,
  pixbufNewSubpixbuf,
  pixbufNewFromXPMData,

-- * Methods
  pixbufGetColorSpace,
  pixbufGetNChannels,
  pixbufGetHasAlpha,
  pixbufGetBitsPerSample,
  PixbufData,
  pixbufGetPixels,
  pixbufGetWidth,
  pixbufGetHeight,
  pixbufGetRowstride,
  pixbufGetOption,
  ImageFormat,
  pixbufGetFormats,
  pixbufSave,
  pixbufCopy,
  InterpType(..),
  pixbufScaleSimple,
  pixbufScale,
  pixbufComposite,

  pixbufFlipHorizontally,
  pixbufFlipHorazontally,
  pixbufFlipVertically,
  pixbufRotateSimple,
  PixbufRotation(..),

  pixbufAddAlpha,
  pixbufCopyArea,
  pixbufFill,






  ) where

import Control.Monad (liftM)
import System.Glib.FFI
import System.Glib.UTFString
import System.Glib.GObject
import Graphics.UI.Gtk.Types
{-# LINE 133 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}



import System.Glib.GError (GError(..), GErrorClass(..), GErrorDomain,
                                propagateGError)
import Graphics.UI.Gtk.Gdk.PixbufData ( PixbufData, mkPixbufData )



import Graphics.Rendering.Cairo
import Graphics.Rendering.Cairo.Types



{-# LINE 147 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

-- | Error codes for loading image files.
--
data PixbufError = PixbufErrorCorruptImage
                 | PixbufErrorInsufficientMemory
                 | PixbufErrorBadOption
                 | PixbufErrorUnknownType
                 | PixbufErrorUnsupportedOperation
                 | PixbufErrorFailed
                 | PixbufErrorIncompleteAnimation
                 deriving (Enum)

{-# LINE 151 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

-- | Enumerate all supported color spaces.
--
-- * Only RGB is supported right now.
--
data Colorspace = ColorspaceRgb
                deriving (Enum)

{-# LINE 157 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

-- | Queries the color space of a pixbuf.
--
pixbufGetColorSpace :: Pixbuf -> IO Colorspace
pixbufGetColorSpace :: Pixbuf -> IO Colorspace
pixbufGetColorSpace Pixbuf
pb = (CInt -> Colorspace) -> IO CInt -> IO Colorspace
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM (Int -> Colorspace
forall a. Enum a => Int -> a
toEnum (Int -> Colorspace) -> (CInt -> Int) -> CInt -> Colorspace
forall b c a. (b -> c) -> (a -> b) -> a -> c
. CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral) (IO CInt -> IO Colorspace) -> IO CInt -> IO Colorspace
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_colorspace Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Queries the number of colors for each pixel.
--
-- * This function returns 3 for an RGB image without alpha (transparency)
-- channel, 4 for an RGB image with alpha channel.
--
pixbufGetNChannels :: Pixbuf -> IO Int
pixbufGetNChannels :: Pixbuf -> IO Int
pixbufGetNChannels Pixbuf
pb = (CInt -> Int) -> IO CInt -> IO Int
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral (IO CInt -> IO Int) -> IO CInt -> IO Int
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_n_channels Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Query if the image has an alpha channel.
--
-- * The alpha channel determines the opaqueness of the pixel.
--
pixbufGetHasAlpha :: Pixbuf -> IO Bool
pixbufGetHasAlpha :: Pixbuf -> IO Bool
pixbufGetHasAlpha Pixbuf
pb =
  (CInt -> Bool) -> IO CInt -> IO Bool
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Bool
forall a. (Eq a, Num a) => a -> Bool
toBool (IO CInt -> IO Bool) -> IO CInt -> IO Bool
forall a b. (a -> b) -> a -> b
$ (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_has_alpha Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Queries the number of bits for each color.
--
-- * Each pixel is has a number of cannels for each pixel, each channel
-- has this many bits.
--
pixbufGetBitsPerSample :: Pixbuf -> IO Int
pixbufGetBitsPerSample :: Pixbuf -> IO Int
pixbufGetBitsPerSample Pixbuf
pb = (CInt -> Int) -> IO CInt -> IO Int
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral (IO CInt -> IO Int) -> IO CInt -> IO Int
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_bits_per_sample Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Retrieve the internal array of raw image data.
--
-- * Image data in a pixbuf is stored in memory in uncompressed,
-- packed format. Rows in the image are stored top to bottom, and in each
-- row pixels are stored from left to right. There may be padding at the
-- end of a row. The "rowstride" value of a pixbuf, as returned by
-- 'pixbufGetRowstride', indicates the number of bytes between rows.
--
-- * The returned array is a flat representation of a three dimensional
-- array: x-coordiante, y-coordinate and several channels for each color.
-- The number of channels is usually 3 for plain RGB data or 4 for
-- RGB data with an alpha channel. To read or write a specific pixel
-- use the formula: @p = y * rowstride + x * nChannels@ for the pixel.
-- If the array contains bytes (or 'Word8's), @p+0@ is the red value,
-- @p+1@ green, @p+2@ blue and @p+3@ the alpha (transparency) channel
-- if present. If the alpha channel is present, the array can accessed
-- as an array over 'Word32' to modify a whole pixel at a time. See also
-- 'pixbufGetBitsPerSample' and 'pixbufGetNChannels'.
--
-- * Calling this function without explicitly giving it a type will often
-- lead to a compiler error since the type parameter @e@ is underspecified.
-- If this happens the function can be explicitly typed:
-- @pbData <- (pixbufGetPixels pb :: IO (PixbufData Int Word8))@
--
-- * If modifying an image through Haskell\'s array interface is not
-- fast enough, it is possible to use 'unsafeRead' and
-- 'unsafeWrite' which have the same type signatures
-- as 'readArray' and 'writeArray'.
-- Note that these are internal
-- functions that might change with GHC.
--
pixbufGetPixels :: Storable e => Pixbuf -> IO (PixbufData Int e)
pixbufGetPixels :: forall e. Storable e => Pixbuf -> IO (PixbufData Int e)
pixbufGetPixels Pixbuf
pb = do
  Ptr CUChar
pixPtr_ <- (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr CUChar)) -> IO (Ptr CUChar)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr CUChar)) -> IO (Ptr CUChar))
-> (Ptr Pixbuf -> IO (Ptr CUChar)) -> IO (Ptr CUChar)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO (Ptr CUChar)
gdk_pixbuf_get_pixels Ptr Pixbuf
argPtr1) Pixbuf
pb
  Int
chan <- Pixbuf -> IO Int
pixbufGetNChannels Pixbuf
pb
  Int
bits <- Pixbuf -> IO Int
pixbufGetBitsPerSample Pixbuf
pb
  Int
w <- Pixbuf -> IO Int
pixbufGetWidth Pixbuf
pb
  Int
h <- Pixbuf -> IO Int
pixbufGetHeight Pixbuf
pb
  Int
r <- Pixbuf -> IO Int
pixbufGetRowstride Pixbuf
pb
  let pixPtr :: Ptr b
pixPtr = Ptr CUChar -> Ptr b
forall a b. Ptr a -> Ptr b
castPtr Ptr CUChar
pixPtr_
  let bytes :: Int
bytes = (Int
hInt -> Int -> Int
forall a. Num a => a -> a -> a
-Int
1)Int -> Int -> Int
forall a. Num a => a -> a -> a
*Int
rInt -> Int -> Int
forall a. Num a => a -> a -> a
+Int
wInt -> Int -> Int
forall a. Num a => a -> a -> a
*((Int
chanInt -> Int -> Int
forall a. Num a => a -> a -> a
*Int
bitsInt -> Int -> Int
forall a. Num a => a -> a -> a
+Int
7) Int -> Int -> Int
forall a. Integral a => a -> a -> a
`div` Int
8)
  PixbufData Int e -> IO (PixbufData Int e)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Pixbuf -> Ptr e -> Int -> PixbufData Int e
forall e. Storable e => Pixbuf -> Ptr e -> Int -> PixbufData Int e
mkPixbufData Pixbuf
pb Ptr e
forall {b}. Ptr b
pixPtr Int
bytes)

-- | Queries the width of this image.
--
pixbufGetWidth :: Pixbuf -> IO Int
pixbufGetWidth :: Pixbuf -> IO Int
pixbufGetWidth Pixbuf
pb = (CInt -> Int) -> IO CInt -> IO Int
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral (IO CInt -> IO Int) -> IO CInt -> IO Int
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_width Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Queries the height of this image.
--
pixbufGetHeight :: Pixbuf -> IO Int
pixbufGetHeight :: Pixbuf -> IO Int
pixbufGetHeight Pixbuf
pb = (CInt -> Int) -> IO CInt -> IO Int
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral (IO CInt -> IO Int) -> IO CInt -> IO Int
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_height Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Queries the rowstride of this image.
--
-- * Queries the rowstride of a pixbuf, which is the number of bytes between
-- rows. Use this value to caculate the offset to a certain row.
--
pixbufGetRowstride :: Pixbuf -> IO Int
pixbufGetRowstride :: Pixbuf -> IO Int
pixbufGetRowstride Pixbuf
pb = (CInt -> Int) -> IO CInt -> IO Int
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM CInt -> Int
forall a b. (Integral a, Num b) => a -> b
fromIntegral (IO CInt -> IO Int) -> IO CInt -> IO Int
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO CInt
gdk_pixbuf_get_rowstride Ptr Pixbuf
argPtr1) Pixbuf
pb

-- | Returns an attribut of an image.
--
-- * Looks up if some information was stored under the @key@ when
-- this image was saved.
--
pixbufGetOption :: (GlibString string) => Pixbuf -> string -> IO (Maybe string)
pixbufGetOption :: forall string.
GlibString string =>
Pixbuf -> string -> IO (Maybe string)
pixbufGetOption Pixbuf
pb string
key = string -> (Ptr CChar -> IO (Maybe string)) -> IO (Maybe string)
forall a. string -> (Ptr CChar -> IO a) -> IO a
forall s a. GlibString s => s -> (Ptr CChar -> IO a) -> IO a
withUTFString string
key ((Ptr CChar -> IO (Maybe string)) -> IO (Maybe string))
-> (Ptr CChar -> IO (Maybe string)) -> IO (Maybe string)
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
strPtr -> do
  Ptr CChar
resPtr <- (\(Pixbuf ForeignPtr Pixbuf
arg1) Ptr CChar
arg2 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr CChar)) -> IO (Ptr CChar)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr CChar)) -> IO (Ptr CChar))
-> (Ptr Pixbuf -> IO (Ptr CChar)) -> IO (Ptr CChar)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> Ptr CChar -> IO (Ptr CChar)
gdk_pixbuf_get_option Ptr Pixbuf
argPtr1 Ptr CChar
arg2) Pixbuf
pb Ptr CChar
strPtr
  if (Ptr CChar
resPtrPtr CChar -> Ptr CChar -> Bool
forall a. Eq a => a -> a -> Bool
==Ptr CChar
forall {b}. Ptr b
nullPtr) then Maybe string -> IO (Maybe string)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe string
forall a. Maybe a
Nothing else
    (string -> Maybe string) -> IO string -> IO (Maybe string)
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM string -> Maybe string
forall a. a -> Maybe a
Just (IO string -> IO (Maybe string)) -> IO string -> IO (Maybe string)
forall a b. (a -> b) -> a -> b
$ Ptr CChar -> IO string
forall s. GlibString s => Ptr CChar -> IO s
peekUTFString Ptr CChar
resPtr

-- helper functions
pixbufErrorDomain :: GErrorDomain
pixbufErrorDomain :: CUInt
pixbufErrorDomain = CUInt
gdk_pixbuf_error_quark
{-# LINE 268 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

instance GErrorClass PixbufError where
  gerrorDomain :: PixbufError -> CUInt
gerrorDomain PixbufError
_ = CUInt
pixbufErrorDomain


-- | Load an image synchonously.
--
-- * Use this function to load only small images as this call will block.
--
-- * If an error occurs, the function will throw an exception that can
-- be caught using e.g. 'System.Glib.GError.catchGErrorJust' and one of the
-- error codes in 'PixbufError'.
--
pixbufNewFromFile :: GlibFilePath fp => fp -> IO Pixbuf
pixbufNewFromFile :: forall fp. GlibFilePath fp => fp -> IO Pixbuf
pixbufNewFromFile fp
fname =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. (Ptr (Ptr ()) -> IO a) -> IO a
propagateGError ((Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr ())
errPtrPtr ->
     fp -> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. fp -> (Ptr CChar -> IO a) -> IO a
forall fp a. GlibFilePath fp => fp -> (Ptr CChar -> IO a) -> IO a
withUTFFilePath fp
fname ((Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
strPtr ->



     Ptr CChar -> Ptr (Ptr ()) -> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_file
{-# LINE 290 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

    Ptr CChar
strPtr Ptr (Ptr ())
errPtrPtr


-- | Creates a new pixbuf by loading an image from a file. The file format is
-- detected automatically. The image will be scaled to fit in the requested
-- size, preserving the image's aspect ratio.
--
-- * If an error occurs, the function will throw an exception that can
-- be caught using e.g. 'System.Glib.GError.catchGErrorJust' and one of the
-- error codes in 'PixbufError'.
--
-- * Available since Gtk+ version 2.4
--
pixbufNewFromFileAtSize :: GlibString string => string -> Int -> Int -> IO Pixbuf
pixbufNewFromFileAtSize :: forall string.
GlibString string =>
string -> Int -> Int -> IO Pixbuf
pixbufNewFromFileAtSize string
filename Int
width Int
height =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. (Ptr (Ptr ()) -> IO a) -> IO a
propagateGError ((Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr ())
errPtrPtr ->
    string -> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. string -> (Ptr CChar -> IO a) -> IO a
forall s a. GlibString s => s -> (Ptr CChar -> IO a) -> IO a
withUTFString string
filename ((Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
filenamePtr ->



    Ptr CChar -> CInt -> CInt -> Ptr (Ptr ()) -> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_file_at_size
{-# LINE 313 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

    Ptr CChar
filenamePtr
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)
    Ptr (Ptr ())
errPtrPtr



-- | Creates a new pixbuf by loading an image from a file. The file format is
-- detected automatically. The image will be scaled to fit in the requested
-- size, optionally preserving the image's aspect ratio.
--
-- When preserving the aspect ratio, a width of -1 will cause the image to be
-- scaled to the exact given height, and a height of -1 will cause the image to
-- be scaled to the exact given width. When not preserving aspect ratio, a width
-- or height of -1 means to not scale the image at all in that dimension.
-- Negative values for width and height are allowed since Gtk+ 2.8.
--
-- * If an error occurs, the function will throw an exception that can
-- be caught using e.g. 'System.Glib.GError.catchGErrorJust' and one of the
-- error codes in 'PixbufError'.
--
-- * Available since Gtk+ version 2.6
--
pixbufNewFromFileAtScale :: GlibString string
  => string -- ^ the name of the file
  -> Int -- ^ target width
  -> Int -- ^ target height
  -> Bool -- ^ whether to preserve the aspect ratio
  -> IO Pixbuf
pixbufNewFromFileAtScale :: forall string.
GlibString string =>
string -> Int -> Int -> Bool -> IO Pixbuf
pixbufNewFromFileAtScale string
filename Int
width Int
height Bool
preserveAspectRatio =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. (Ptr (Ptr ()) -> IO a) -> IO a
propagateGError ((Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr (Ptr ()) -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr ())
errPtrPtr ->
    string -> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a. string -> (Ptr CChar -> IO a) -> IO a
forall s a. GlibString s => s -> (Ptr CChar -> IO a) -> IO a
withUTFString string
filename ((Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr CChar -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
filenamePtr ->



    Ptr CChar
-> CInt -> CInt -> CInt -> Ptr (Ptr ()) -> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_file_at_scale
{-# LINE 351 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

    Ptr CChar
filenamePtr
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)
    (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
preserveAspectRatio)
    Ptr (Ptr ())
errPtrPtr



-- | Creates a new pixbuf from a cairo Surface.
--
-- Transfers image data from a cairo Surface and converts it to an RGB(A) representation inside a Pixbuf. This allows you to efficiently read individual pixels from cairo surfaces. For GdkWindows, use gdk_pixbuf_get_from_window() instead.
--
-- This function will create an RGB pixbuf with 8 bits per channel. The pixbuf will contain an alpha channel if the surface contains one.
pixbufNewFromSurface :: Surface -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewFromSurface :: Surface -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewFromSurface Surface
surface Int
srcX Int
srcY Int
width Int
height =
  Surface -> (Ptr Surface -> IO Pixbuf) -> IO Pixbuf
forall {b}. Surface -> (Ptr Surface -> IO b) -> IO b
withSurface Surface
surface ((Ptr Surface -> IO Pixbuf) -> IO Pixbuf)
-> (Ptr Surface -> IO Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ \Ptr Surface
ss -> (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
    Ptr () -> CInt -> CInt -> CInt -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_get_from_surface
{-# LINE 369 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
    (castPtr ss)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcX)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcY)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)

-- | Creates a new pixbuf from a GDK window.
--
-- Transfers image data from a GdkWindow and converts it to an RGB(A) representation inside a GdkPixbuf. In other words, copies image data from a server-side drawable to a client-side RGB(A) buffer. This allows you to efficiently read individual pixels on the client side.
--
-- This function will create an RGB pixbuf with 8 bits per channel with the size specified by the width and height arguments scaled by the scale factor of window. The pixbuf will contain an alpha channel if the window contains one.
pixbufNewFromWindow :: DrawWindowClass self
  => self -- ^ @window@ - The source window.
  -> Int -- ^ @srcX@ - Source X coordinate within window.
  -> Int -- ^ @srcY@ - Source Y coordinate within window.
  -> Int -- ^ @width@ - Width in pixels of region to get.
  -> Int -- ^ @height@ - Height in pixels of region to get.
  -> IO Pixbuf
pixbufNewFromWindow :: forall self.
DrawWindowClass self =>
self -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewFromWindow self
window Int
srcX Int
srcY Int
width Int
height =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
    (\(DrawWindow ForeignPtr DrawWindow
arg1) CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5 -> ForeignPtr DrawWindow
-> (Ptr DrawWindow -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr DrawWindow
arg1 ((Ptr DrawWindow -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr DrawWindow -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr DrawWindow
argPtr1 ->Ptr DrawWindow -> CInt -> CInt -> CInt -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_get_from_window Ptr DrawWindow
argPtr1 CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5)
{-# LINE 390 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
      (toDrawWindow window)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcX)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcY)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)


-- | A string representing an image file format.
--
type ImageFormat = DefaultGlibString

-- constant pixbufGetFormats A list of valid image file formats.
--
pixbufGetFormats :: [ImageFormat]

pixbufGetFormats :: [ImageFormat]
pixbufGetFormats = [ImageFormat
"png",ImageFormat
"bmp",ImageFormat
"wbmp", ImageFormat
"gif",ImageFormat
"ico",ImageFormat
"ani",ImageFormat
"jpeg",ImageFormat
"pnm",
                    ImageFormat
"ras",ImageFormat
"tiff",ImageFormat
"xpm",ImageFormat
"xbm",ImageFormat
"tga"]

-- | Save an image to disk.
--
-- * The function takes a list of key - value pairs to specify
-- either how an image is saved or to actually save this additional
-- data with the image. JPEG images can be saved with a \"quality\"
-- parameter; its value should be in the range [0,100]. Text chunks
-- can be attached to PNG images by specifying parameters of the form
-- \"tEXt::key\", where key is an ASCII string of length 1-79.
-- The values are Unicode strings.
--
-- * If an error occurs, the function will throw an exception that can
-- be caught using e.g. 'System.Glib.GError.catchGErrorJust' and one of the
-- error codes in 'PixbufError'.
--
pixbufSave :: (GlibString string, GlibFilePath fp) => Pixbuf -> fp -> ImageFormat -> [(string, string)] ->
              IO ()
pixbufSave :: forall string fp.
(GlibString string, GlibFilePath fp) =>
Pixbuf -> fp -> ImageFormat -> [(string, string)] -> IO ()
pixbufSave Pixbuf
pb fp
fname ImageFormat
iType [(string, string)]
options =
  let ([string]
keys, [string]
values) = [(string, string)] -> ([string], [string])
forall a b. [(a, b)] -> ([a], [b])
unzip [(string, string)]
options in
  (Ptr (Ptr ()) -> IO ()) -> IO ()
forall a. (Ptr (Ptr ()) -> IO a) -> IO a
propagateGError ((Ptr (Ptr ()) -> IO ()) -> IO ())
-> (Ptr (Ptr ()) -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr ())
errPtrPtr ->
    fp -> (Ptr CChar -> IO ()) -> IO ()
forall a. fp -> (Ptr CChar -> IO a) -> IO a
forall fp a. GlibFilePath fp => fp -> (Ptr CChar -> IO a) -> IO a
withUTFFilePath fp
fname ((Ptr CChar -> IO ()) -> IO ()) -> (Ptr CChar -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
fnPtr ->
    ImageFormat -> (Ptr CChar -> IO ()) -> IO ()
forall s a. GlibString s => s -> (Ptr CChar -> IO a) -> IO a
forall a. ImageFormat -> (Ptr CChar -> IO a) -> IO a
withUTFString ImageFormat
iType ((Ptr CChar -> IO ()) -> IO ()) -> (Ptr CChar -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr CChar
tyPtr ->
    [string] -> (Ptr (Ptr CChar) -> IO ()) -> IO ()
forall s a.
GlibString s =>
[s] -> (Ptr (Ptr CChar) -> IO a) -> IO a
withUTFStringArray0 [string]
keys ((Ptr (Ptr CChar) -> IO ()) -> IO ())
-> (Ptr (Ptr CChar) -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr CChar)
keysPtr ->
    [string] -> (Ptr (Ptr CChar) -> IO ()) -> IO ()
forall s a.
GlibString s =>
[s] -> (Ptr (Ptr CChar) -> IO a) -> IO a
withUTFStringArray [string]
values ((Ptr (Ptr CChar) -> IO ()) -> IO ())
-> (Ptr (Ptr CChar) -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr CChar)
valuesPtr -> do



      (\(Pixbuf ForeignPtr Pixbuf
arg1) Ptr CChar
arg2 Ptr CChar
arg3 Ptr (Ptr CChar)
arg4 Ptr (Ptr CChar)
arg5 Ptr (Ptr ())
arg6 -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO CInt) -> IO CInt)
-> (Ptr Pixbuf -> IO CInt) -> IO CInt
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf
-> Ptr CChar
-> Ptr CChar
-> Ptr (Ptr CChar)
-> Ptr (Ptr CChar)
-> Ptr (Ptr ())
-> IO CInt
gdk_pixbuf_savev Ptr Pixbuf
argPtr1 Ptr CChar
arg2 Ptr CChar
arg3 Ptr (Ptr CChar)
arg4 Ptr (Ptr CChar)
arg5 Ptr (Ptr ())
arg6)
{-# LINE 435 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

        Pixbuf
pb Ptr CChar
fnPtr Ptr CChar
tyPtr Ptr (Ptr CChar)
keysPtr Ptr (Ptr CChar)
valuesPtr Ptr (Ptr ())
errPtrPtr
      () -> IO ()
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()

-- | Create a new image in memory.
--
-- * Creates a new pixbuf structure and allocates a buffer for
-- it. Note that the buffer is not cleared initially.
--
-- * The boolean flag is true if the pixbuf should have an alpha
-- (transparency) channel. The next integer denotes the bits per
-- color sample, e.g. 8 bits per color for 2^24 colors. The last
-- two integers denote the width and height, respectively.
--
pixbufNew :: Colorspace -> Bool -> Int -> Int -> Int -> IO Pixbuf
pixbufNew :: Colorspace -> Bool -> Int -> Int -> Int -> IO Pixbuf
pixbufNew Colorspace
colorspace Bool
hasAlpha Int
bitsPerSample Int
width Int
height =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
    CInt -> CInt -> CInt -> CInt -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_new ((Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> (Colorspace -> Int) -> Colorspace -> CInt
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Colorspace -> Int
forall a. Enum a => a -> Int
fromEnum) Colorspace
colorspace)
      (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
hasAlpha) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
bitsPerSample) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)

pixbufNewFromData :: Ptr CUChar -> Colorspace -> Bool -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewFromData :: Ptr CUChar
-> Colorspace -> Bool -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewFromData Ptr CUChar
imData Colorspace
cSpace Bool
hasAlpha Int
bitsPerSample Int
width Int
height Int
rowStride
  = (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
     Ptr CUChar
-> CInt
-> CInt
-> CInt
-> CInt
-> CInt
-> CInt
-> FunPtr (Ptr CUChar -> Ptr () -> IO ())
-> Ptr ()
-> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_data
{-# LINE 460 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
       imData
       (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> (Colorspace -> Int) -> Colorspace -> CInt
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Colorspace -> Int
forall a. Enum a => a -> Int
fromEnum (Colorspace -> CInt) -> Colorspace -> CInt
forall a b. (a -> b) -> a -> b
$ Colorspace
cSpace)
       (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
hasAlpha)
       (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
bitsPerSample)
       (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
       (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)
       (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
rowStride)
       FunPtr (Ptr CUChar -> Ptr () -> IO ())
forall a. FunPtr a
nullFunPtr Ptr ()
forall {b}. Ptr b
nullPtr

-- | Create a new image from a string.
--
-- * Creates a new pixbuf from a string description.
--
pixbufNewFromXPMData :: GlibString string => [string] -> IO Pixbuf
pixbufNewFromXPMData :: forall string. GlibString string => [string] -> IO Pixbuf
pixbufNewFromXPMData [string]
s =
  [string] -> (Ptr (Ptr CChar) -> IO Pixbuf) -> IO Pixbuf
forall s a.
GlibString s =>
[s] -> (Ptr (Ptr CChar) -> IO a) -> IO a
withUTFStringArray0 [string]
s ((Ptr (Ptr CChar) -> IO Pixbuf) -> IO Pixbuf)
-> (Ptr (Ptr CChar) -> IO Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr CChar)
strsPtr ->
    (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ Ptr (Ptr CChar) -> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_xpm_data Ptr (Ptr CChar)
strsPtr

-- | A dymmy type for inline picture data.
--
-- * This dummy type is used to declare pointers to image data
-- that is embedded in the executable. See
-- 'pixbufNewFromInline' for an example.
--
data InlineImage

-- | Create a new image from a static pointer.
--
-- * Like 'pixbufNewFromXPMData', this function allows to
-- include images in the final binary program. The method used by this
-- function uses a binary representation and therefore needs less space
-- in the final executable. Save the image you want to include as
-- @png@ and run:
--
-- > @echo #include "my_image.h" > my_image.c
-- > gdk-pixbuf-csource --raw --extern --name=my_image myimage.png >> my_image.c
--
-- on it. Write a header file @my_image.h@ containing:
--
-- > #include <gdk/gdk.h>
-- > extern guint8 my_image[];
--
-- and save it in the current directory.
-- The created file can be compiled with:
--
-- > cc -c my_image.c `pkg-config --cflags gdk-2.0`
--
-- into an object file which must be linked into your Haskell program by
-- specifying @my_image.o@ and @\"-#include my_image.h\"@ on
-- the command line of GHC.
-- Within you application you delcare a pointer to this image:
--
-- > foreign label "my_image" myImage :: Ptr InlineImage
--
-- Calling 'pixbufNewFromInline' with this pointer will
-- return the image in the object file. Creating the C file with
-- the @--raw@ flag will result in a non-compressed image in the
-- object file. The advantage is that the picture will not be
-- copied when this function is called.
--
--
pixbufNewFromInline :: Ptr InlineImage -> IO Pixbuf
pixbufNewFromInline :: Ptr InlineImage -> IO Pixbuf
pixbufNewFromInline Ptr InlineImage
iPtr = (Ptr (Ptr GError) -> IO Pixbuf) -> IO Pixbuf
forall a b. Storable a => (Ptr a -> IO b) -> IO b
alloca ((Ptr (Ptr GError) -> IO Pixbuf) -> IO Pixbuf)
-> (Ptr (Ptr GError) -> IO Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr GError)
errPtrPtr -> do
  Ptr Pixbuf
pbPtr <- CInt -> Ptr CUChar -> CInt -> Ptr (Ptr ()) -> IO (Ptr Pixbuf)
gdk_pixbuf_new_from_inline (-CInt
1) (Ptr InlineImage -> Ptr CUChar
forall a b. Ptr a -> Ptr b
castPtr Ptr InlineImage
iPtr)
    (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
False) (Ptr (Ptr GError) -> Ptr (Ptr ())
forall a b. Ptr a -> Ptr b
castPtr Ptr (Ptr GError)
errPtrPtr)
  if Ptr Pixbuf
pbPtrPtr Pixbuf -> Ptr Pixbuf -> Bool
forall a. Eq a => a -> a -> Bool
/=Ptr Pixbuf
forall {b}. Ptr b
nullPtr then (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (Ptr Pixbuf -> IO (Ptr Pixbuf)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Ptr Pixbuf
pbPtr)
    else do
      Ptr GError
errPtr <- Ptr (Ptr GError) -> IO (Ptr GError)
forall a. Storable a => Ptr a -> IO a
peek Ptr (Ptr GError)
errPtrPtr
      (GError CUInt
dom Int
code ImageFormat
msg) <- Ptr GError -> IO GError
forall a. Storable a => Ptr a -> IO a
peek Ptr GError
errPtr
      [Char] -> IO Pixbuf
forall a. HasCallStack => [Char] -> a
error ([Char] -> IO Pixbuf) -> [Char] -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ ImageFormat -> [Char]
glibToString ImageFormat
msg

-- | Create a restricted view of an image.
--
-- * This function returns a 'Pixbuf' object which shares
-- the image of the original one but only shows a part of it.
-- Modifying either buffer will affect the other.
--
-- * This function throw an exception if the requested bounds are invalid.
--
pixbufNewSubpixbuf :: Pixbuf -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewSubpixbuf :: Pixbuf -> Int -> Int -> Int -> Int -> IO Pixbuf
pixbufNewSubpixbuf Pixbuf
pb Int
srcX Int
srcY Int
height Int
width =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ do
    Ptr Pixbuf
pbPtr <- (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CInt -> CInt -> CInt -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_new_subpixbuf Ptr Pixbuf
argPtr1 CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5) Pixbuf
pb
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcX) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcY)
      (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width)
    if Ptr Pixbuf
pbPtrPtr Pixbuf -> Ptr Pixbuf -> Bool
forall a. Eq a => a -> a -> Bool
==Ptr Pixbuf
forall {b}. Ptr b
nullPtr then [Char] -> IO (Ptr Pixbuf)
forall a. HasCallStack => [Char] -> a
error [Char]
"pixbufNewSubpixbuf: invalid bounds"
      else Ptr Pixbuf -> IO (Ptr Pixbuf)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Ptr Pixbuf
pbPtr

-- | Create a deep copy of an image.
--
pixbufCopy :: Pixbuf -> IO Pixbuf
pixbufCopy :: Pixbuf -> IO Pixbuf
pixbufCopy Pixbuf
pb = (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ (\(Pixbuf ForeignPtr Pixbuf
arg1) -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> IO (Ptr Pixbuf)
gdk_pixbuf_copy Ptr Pixbuf
argPtr1) Pixbuf
pb


-- | How an image is scaled.
--
-- [@InterpNearest@] Nearest neighbor sampling; this is the
-- fastest and lowest quality mode. Quality is normally unacceptable when
-- scaling down, but may be OK when scaling up.
--
-- [@InterpTiles@] This is an accurate simulation of the
-- PostScript image operator without any interpolation enabled. Each
-- pixel is rendered as a tiny parallelogram of solid color, the edges of
-- which are implemented with antialiasing. It resembles nearest neighbor
-- for enlargement, and bilinear for reduction.
--
-- [@InterpBilinear@] Best quality\/speed balance; use this
-- mode by default. Bilinear interpolation. For enlargement, it is
-- equivalent to point-sampling the ideal bilinear-interpolated
-- image. For reduction, it is equivalent to laying down small tiles and
-- integrating over the coverage area.
--
-- [@InterpHyper@] This is the slowest and highest quality
-- reconstruction function. It is derived from the hyperbolic filters in
-- Wolberg's \"Digital Image Warping\", and is formally defined as the
-- hyperbolic-filter sampling the ideal hyperbolic-filter interpolated
-- image (the filter is designed to be idempotent for 1:1 pixel mapping).
--
data InterpType = InterpNearest
                | InterpTiles
                | InterpBilinear
                | InterpHyper
                deriving (Int -> InterpType
InterpType -> Int
InterpType -> [InterpType]
InterpType -> InterpType
InterpType -> InterpType -> [InterpType]
InterpType -> InterpType -> InterpType -> [InterpType]
(InterpType -> InterpType)
-> (InterpType -> InterpType)
-> (Int -> InterpType)
-> (InterpType -> Int)
-> (InterpType -> [InterpType])
-> (InterpType -> InterpType -> [InterpType])
-> (InterpType -> InterpType -> [InterpType])
-> (InterpType -> InterpType -> InterpType -> [InterpType])
-> Enum InterpType
forall a.
(a -> a)
-> (a -> a)
-> (Int -> a)
-> (a -> Int)
-> (a -> [a])
-> (a -> a -> [a])
-> (a -> a -> [a])
-> (a -> a -> a -> [a])
-> Enum a
$csucc :: InterpType -> InterpType
succ :: InterpType -> InterpType
$cpred :: InterpType -> InterpType
pred :: InterpType -> InterpType
$ctoEnum :: Int -> InterpType
toEnum :: Int -> InterpType
$cfromEnum :: InterpType -> Int
fromEnum :: InterpType -> Int
$cenumFrom :: InterpType -> [InterpType]
enumFrom :: InterpType -> [InterpType]
$cenumFromThen :: InterpType -> InterpType -> [InterpType]
enumFromThen :: InterpType -> InterpType -> [InterpType]
$cenumFromTo :: InterpType -> InterpType -> [InterpType]
enumFromTo :: InterpType -> InterpType -> [InterpType]
$cenumFromThenTo :: InterpType -> InterpType -> InterpType -> [InterpType]
enumFromThenTo :: InterpType -> InterpType -> InterpType -> [InterpType]
Enum)

{-# LINE 579 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}

-- | Scale an image.
--
-- * Creates a new 'Pixbuf' containing a copy of
-- @src@ scaled to the given measures. Leaves @src@
-- unaffected.
--
-- * @interp@ affects the quality and speed of the scaling function.
-- 'InterpNearest' is the fastest option but yields very poor quality
-- when scaling down. 'InterpBilinear' is a good trade-off between
-- speed and quality and should thus be used as a default.
--
pixbufScaleSimple ::
  Pixbuf -- ^ @src@ - the source image
  -> Int -- ^ @width@ - the target width
  -> Int -- ^ @height@ the target height
  -> InterpType -- ^ interpolation type
  -> IO Pixbuf
pixbufScaleSimple :: Pixbuf -> Int -> Int -> InterpType -> IO Pixbuf
pixbufScaleSimple Pixbuf
pb Int
width Int
height InterpType
interp =
    (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$ (Ptr Pixbuf -> Ptr Pixbuf) -> IO (Ptr Pixbuf) -> IO (Ptr Pixbuf)
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM Ptr Pixbuf -> Ptr Pixbuf
forall a b. Ptr a -> Ptr b
castPtr (IO (Ptr Pixbuf) -> IO (Ptr Pixbuf))
-> IO (Ptr Pixbuf) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$
        (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 CInt
arg3 CInt
arg4 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CInt -> CInt -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_scale_simple Ptr Pixbuf
argPtr1 CInt
arg2 CInt
arg3 CInt
arg4) (Pixbuf -> Pixbuf
forall o. PixbufClass o => o -> Pixbuf
toPixbuf Pixbuf
pb)
        (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
width) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
height)
        (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> Int -> CInt
forall a b. (a -> b) -> a -> b
$ InterpType -> Int
forall a. Enum a => a -> Int
fromEnum InterpType
interp)

-- | Copy a scaled image part to another image.
--
-- * This function is the generic version of 'pixbufScaleSimple'. It scales
-- @src@ by @scaleX@ and @scaleY@ and translate the image by @offsetX@ and
-- @offsetY@. Whatever is in the intersection with the rectangle @destX@,
-- @destY@, @destWidth@, @destHeight@ will be rendered into @dest@.
--
-- * The rectangle in the destination is simply overwritten. Use
-- 'pixbufComposite' if you need to blend the source image onto the
-- destination.
--
pixbufScale ::
    Pixbuf -- ^ @src@ - the source pixbuf
 -> Pixbuf -- ^ @dest@ - the pixbuf into which to render the results
 -> Int -- ^ @destX@ - the left coordinate for region to render
 -> Int -- ^ @destY@ - the top coordinate for region to render
 -> Int -- ^ @destWidth@ - the width of the region to render
 -> Int -- ^ @destHeight@ - the height of the region to render
 -> Double -- ^ @offsetX@ - the offset in the X direction (currently
               -- rounded to an integer)
 -> Double -- ^ @offsetY@ - the offset in the Y direction
               -- (currently rounded to an integer)
 -> Double -- ^ @scaleX@ - the scale factor in the X direction
 -> Double -- ^ @scaleY@ - the scale factor in the Y direction
 -> InterpType -- ^ the interpolation type for the transformation.
 -> IO ()
pixbufScale :: Pixbuf
-> Pixbuf
-> Int
-> Int
-> Int
-> Int
-> Double
-> Double
-> Double
-> Double
-> InterpType
-> IO ()
pixbufScale Pixbuf
src Pixbuf
dest Int
destX Int
destY Int
destWidth Int
destHeight Double
offsetX Double
offsetY
  Double
scaleX Double
scaleY InterpType
interp =
  (\(Pixbuf ForeignPtr Pixbuf
arg1) (Pixbuf ForeignPtr Pixbuf
arg2) CInt
arg3 CInt
arg4 CInt
arg5 CInt
arg6 CDouble
arg7 CDouble
arg8 CDouble
arg9 CDouble
arg10 CInt
arg11 -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg2 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr2 ->Ptr Pixbuf
-> Ptr Pixbuf
-> CInt
-> CInt
-> CInt
-> CInt
-> CDouble
-> CDouble
-> CDouble
-> CDouble
-> CInt
-> IO ()
gdk_pixbuf_scale Ptr Pixbuf
argPtr1 Ptr Pixbuf
argPtr2 CInt
arg3 CInt
arg4 CInt
arg5 CInt
arg6 CDouble
arg7 CDouble
arg8 CDouble
arg9 CDouble
arg10 CInt
arg11) Pixbuf
src Pixbuf
dest
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destX) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destY)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destWidth) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destHeight)
    (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
offsetX) (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
offsetY)
    (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
scaleX) (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
scaleY)
    ((Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> (InterpType -> Int) -> InterpType -> CInt
forall b c a. (b -> c) -> (a -> b) -> a -> c
. InterpType -> Int
forall a. Enum a => a -> Int
fromEnum) InterpType
interp)

-- | Blend a scaled image part onto another image.
--
-- * This function is similar to 'pixbufScale' but allows the
-- original image to \"shine through\". The @alpha@ value determines
-- how opaque the source image is. Passing @0@ is
-- equivalent to not calling this function at all, passing
-- @255@ has the
-- same effect as calling 'pixbufScale'.
--
pixbufComposite ::
     Pixbuf -- ^ @src@ - the source pixbuf
  -> Pixbuf -- ^ @dest@ - the pixbuf into which to render the results
  -> Int -- ^ @destX@ - the left coordinate for region to render
  -> Int -- ^ @destY@ - the top coordinate for region to render
  -> Int -- ^ @destWidth@ - the width of the region to render
  -> Int -- ^ @destHeight@ - the height of the region to render
  -> Double -- ^ @offsetX@ - the offset in the X direction (currently
                -- rounded to an integer)
  -> Double -- ^ @offsetY@ - the offset in the Y direction
                -- (currently rounded to an integer)
  -> Double -- ^ @scaleX@ - the scale factor in the X direction
  -> Double -- ^ @scaleY@ - the scale factor in the Y direction
  -> InterpType -- ^ the interpolation type for the transformation.
  -> Word8 -- ^ @alpha@ - the transparency
  -> IO ()
pixbufComposite :: Pixbuf
-> Pixbuf
-> Int
-> Int
-> Int
-> Int
-> Double
-> Double
-> Double
-> Double
-> InterpType
-> Word8
-> IO ()
pixbufComposite Pixbuf
src Pixbuf
dest Int
destX Int
destY Int
destWidth Int
destHeight
  Double
offsetX Double
offsetY Double
scaleX Double
scaleY InterpType
interp Word8
alpha =
  (\(Pixbuf ForeignPtr Pixbuf
arg1) (Pixbuf ForeignPtr Pixbuf
arg2) CInt
arg3 CInt
arg4 CInt
arg5 CInt
arg6 CDouble
arg7 CDouble
arg8 CDouble
arg9 CDouble
arg10 CInt
arg11 CInt
arg12 -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg2 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr2 ->Ptr Pixbuf
-> Ptr Pixbuf
-> CInt
-> CInt
-> CInt
-> CInt
-> CDouble
-> CDouble
-> CDouble
-> CDouble
-> CInt
-> CInt
-> IO ()
gdk_pixbuf_composite Ptr Pixbuf
argPtr1 Ptr Pixbuf
argPtr2 CInt
arg3 CInt
arg4 CInt
arg5 CInt
arg6 CDouble
arg7 CDouble
arg8 CDouble
arg9 CDouble
arg10 CInt
arg11 CInt
arg12) Pixbuf
src Pixbuf
dest
  (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destX) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destY) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destWidth)
  (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destHeight) (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
offsetX) (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
offsetY)
  (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
scaleX) (Double -> CDouble
forall a b. (Real a, Fractional b) => a -> b
realToFrac Double
scaleY)
  ((Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> (InterpType -> Int) -> InterpType -> CInt
forall b c a. (b -> c) -> (a -> b) -> a -> c
. InterpType -> Int
forall a. Enum a => a -> Int
fromEnum) InterpType
interp) (Word8 -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
alpha)


-- | Flips a pixbuf horizontally and returns the result in a new pixbuf.
--
pixbufFlipHorizontally :: Pixbuf -> IO Pixbuf
pixbufFlipHorizontally :: Pixbuf -> IO Pixbuf
pixbufFlipHorizontally Pixbuf
self =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_flip Ptr Pixbuf
argPtr1 CInt
arg2)
{-# LINE 678 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
    self
    (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
True)
pixbufFlipHorazontally :: Pixbuf -> IO Pixbuf
pixbufFlipHorazontally = Pixbuf -> IO Pixbuf
pixbufFlipHorizontally

-- | Flips a pixbuf vertically and returns the result in a new pixbuf.
--
pixbufFlipVertically :: Pixbuf -> IO Pixbuf
pixbufFlipVertically :: Pixbuf -> IO Pixbuf
pixbufFlipVertically Pixbuf
self =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_flip Ptr Pixbuf
argPtr1 CInt
arg2)
{-# LINE 688 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
    self
    (Bool -> CInt
forall a. Num a => Bool -> a
fromBool Bool
False)

-- | Rotates a pixbuf by a multiple of 90 degrees, and returns the result in a
-- new pixbuf.
--
pixbufRotateSimple :: Pixbuf -> PixbufRotation -> IO Pixbuf
pixbufRotateSimple :: Pixbuf -> PixbufRotation -> IO Pixbuf
pixbufRotateSimple Pixbuf
self PixbufRotation
angle =
  (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
-> IO (Ptr Pixbuf) -> IO Pixbuf
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
wrapNewGObject (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr Pixbuf)
forall {a}. (ForeignPtr Pixbuf -> Pixbuf, FinalizerPtr a)
mkPixbuf (IO (Ptr Pixbuf) -> IO Pixbuf) -> IO (Ptr Pixbuf) -> IO Pixbuf
forall a b. (a -> b) -> a -> b
$
  (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 -> ForeignPtr Pixbuf
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf))
-> (Ptr Pixbuf -> IO (Ptr Pixbuf)) -> IO (Ptr Pixbuf)
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CInt -> IO (Ptr Pixbuf)
gdk_pixbuf_rotate_simple Ptr Pixbuf
argPtr1 CInt
arg2)
{-# LINE 698 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}
    self
    ((Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Int -> CInt) -> (PixbufRotation -> Int) -> PixbufRotation -> CInt
forall b c a. (b -> c) -> (a -> b) -> a -> c
. PixbufRotation -> Int
forall a. Enum a => a -> Int
fromEnum) PixbufRotation
angle)

-- | The possible rotations which can be passed to 'pixbufRotateSimple'.
--
-- To make them easier to use, their numerical values are the actual degrees.
--
data PixbufRotation = PixbufRotateNone
                    | PixbufRotateCounterclockwise
                    | PixbufRotateUpsidedown
                    | PixbufRotateClockwise
                    
instance Enum PixbufRotation where
  fromEnum :: PixbufRotation -> Int
fromEnum PixbufRotation
PixbufRotateNone = Int
0
  fromEnum PixbufRotation
PixbufRotateCounterclockwise = Int
90
  fromEnum PixbufRotation
PixbufRotateUpsidedown = Int
180
  fromEnum PixbufRotation
PixbufRotateClockwise = Int
270

  toEnum :: Int -> PixbufRotation
toEnum Int
0 = PixbufRotation
PixbufRotateNone
  toEnum Int
90 = PixbufRotation
PixbufRotateCounterclockwise
  toEnum Int
180 = PixbufRotation
PixbufRotateUpsidedown
  toEnum Int
270 = PixbufRotation
PixbufRotateClockwise
  toEnum Int
unmatched = [Char] -> PixbufRotation
forall a. HasCallStack => [Char] -> a
error ([Char]
"PixbufRotation.toEnum: Cannot match " [Char] -> [Char] -> [Char]
forall a. [a] -> [a] -> [a]
++ Int -> [Char]
forall a. Show a => a -> [Char]
show Int
unmatched)

  succ PixbufRotateNone = PixbufRotateCounterclockwise
  succ PixbufRotateCounterclockwise = PixbufRotateUpsidedown
  succ PixbufRotateUpsidedown = PixbufRotateClockwise
  succ _ = undefined

  pred :: PixbufRotation -> PixbufRotation
pred PixbufRotation
PixbufRotateCounterclockwise = PixbufRotation
PixbufRotateNone
  pred PixbufRotation
PixbufRotateUpsidedown = PixbufRotation
PixbufRotateCounterclockwise
  pred PixbufRotation
PixbufRotateClockwise = PixbufRotation
PixbufRotateUpsidedown
  pred PixbufRotation
_ = PixbufRotation
forall a. HasCallStack => a
undefined

  enumFromTo :: PixbufRotation -> PixbufRotation -> [PixbufRotation]
enumFromTo PixbufRotation
x PixbufRotation
y | PixbufRotation -> Int
forall a. Enum a => a -> Int
fromEnum PixbufRotation
x Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== PixbufRotation -> Int
forall a. Enum a => a -> Int
fromEnum PixbufRotation
y = [ PixbufRotation
y ]
                 | Bool
otherwise = PixbufRotation
x PixbufRotation -> [PixbufRotation] -> [PixbufRotation]
forall a. a -> [a] -> [a]
: PixbufRotation -> PixbufRotation -> [PixbufRotation]
forall a. Enum a => a -> a -> [a]
enumFromTo (PixbufRotation -> PixbufRotation
forall a. Enum a => a -> a
succ PixbufRotation
x) PixbufRotation
y
  enumFrom :: PixbufRotation -> [PixbufRotation]
enumFrom PixbufRotation
x = PixbufRotation -> PixbufRotation -> [PixbufRotation]
forall a. Enum a => a -> a -> [a]
enumFromTo PixbufRotation
x PixbufRotation
PixbufRotateClockwise
  enumFromThen :: PixbufRotation -> PixbufRotation -> [PixbufRotation]
enumFromThen PixbufRotation
_ PixbufRotation
_ =     [Char] -> [PixbufRotation]
forall a. HasCallStack => [Char] -> a
error [Char]
"Enum PixbufRotation: enumFromThen not implemented"
  enumFromThenTo :: PixbufRotation
-> PixbufRotation -> PixbufRotation -> [PixbufRotation]
enumFromThenTo PixbufRotation
_ PixbufRotation
_ PixbufRotation
_ =     [Char] -> [PixbufRotation]
forall a. HasCallStack => [Char] -> a
error [Char]
"Enum PixbufRotation: enumFromThenTo not implemented"

{-# LINE 706 "./Graphics/UI/Gtk/Gdk/Pixbuf.chs" #-}


-- | Add an opacity layer to the 'Pixbuf'.
--
-- * This function returns a copy of the given @src@
-- 'Pixbuf', leaving @src@ unmodified.
-- The new 'Pixbuf' has an alpha (opacity)
-- channel which defaults to @255@ (fully opaque pixels)
-- unless @src@ already had an alpha channel in which case
-- the original values are kept.
-- Passing in a color triple @(r,g,b)@ makes all
-- pixels that have this color fully transparent
-- (opacity of @0@). The pixel color itself remains unchanged
-- during this substitution.
--
pixbufAddAlpha :: Pixbuf -> Maybe (Word8, Word8, Word8) -> IO Pixbuf
pixbufAddAlpha pb Nothing = wrapNewGObject mkPixbuf $
  (\(Pixbuf arg1) arg2 arg3 arg4 arg5 -> withForeignPtr arg1 $ \argPtr1 ->gdk_pixbuf_add_alpha argPtr1 arg2 arg3 arg4 arg5) pb (fromBool False) 0 0 0
pixbufAddAlpha pb (Just (r,g,b)) = wrapNewGObject mkPixbuf $
  (\(Pixbuf arg1) arg2 arg3 arg4 arg5 -> withForeignPtr arg1 $ \argPtr1 ->gdk_pixbuf_add_alpha argPtr1 arg2 arg3 arg4 arg5) pb (fromBool True)
    (fromIntegral r) (fromIntegral g) (fromIntegral b)

-- | Copy a rectangular portion into another 'Pixbuf'.
--
-- The source 'Pixbuf' remains unchanged. Converion between
-- different formats is done automatically.
--
pixbufCopyArea ::
    Pixbuf -- ^ Source pixbuf
 -> Int -- ^ Source X coordinate within the source pixbuf
 -> Int -- ^ Source Y coordinate within the source pixbuf
 -> Int -- ^ Width of the area to copy
 -> Int -- ^ Height of the area to copy
 -> Pixbuf -- ^ Destination pixbuf
 -> Int -- ^ X coordinate within the destination pixbuf
 -> Int -- ^ Y coordinate within the destination pixbuf
 -> IO ()
pixbufCopyArea :: Pixbuf -> Int -> Int -> Int -> Int -> Pixbuf -> Int -> Int -> IO ()
pixbufCopyArea Pixbuf
src Int
srcX Int
srcY Int
srcWidth Int
srcHeight Pixbuf
dest Int
destX Int
destY =
  (\(Pixbuf ForeignPtr Pixbuf
arg1) CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5 (Pixbuf ForeignPtr Pixbuf
arg6) CInt
arg7 CInt
arg8 -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg6 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr6 ->Ptr Pixbuf
-> CInt
-> CInt
-> CInt
-> CInt
-> Ptr Pixbuf
-> CInt
-> CInt
-> IO ()
gdk_pixbuf_copy_area Ptr Pixbuf
argPtr1 CInt
arg2 CInt
arg3 CInt
arg4 CInt
arg5 Ptr Pixbuf
argPtr6 CInt
arg7 CInt
arg8) Pixbuf
src
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcX) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcY)
    (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcWidth) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
srcHeight)
    Pixbuf
dest (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destX) (Int -> CInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
destY)

-- | Fills a 'Pixbuf' with a color.
--
-- * The passed-in color is a quadruple consisting of the red, green, blue
-- and alpha component of the pixel. If the 'Pixbuf' does not
-- have an alpha channel, the alpha value is ignored.
--
pixbufFill :: Pixbuf -> Word8 -> Word8 -> Word8 -> Word8 -> IO ()
pixbufFill :: Pixbuf -> Word8 -> Word8 -> Word8 -> Word8 -> IO ()
pixbufFill Pixbuf
pb Word8
red Word8
green Word8
blue Word8
alpha = (\(Pixbuf ForeignPtr Pixbuf
arg1) CUInt
arg2 -> ForeignPtr Pixbuf -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Pixbuf
arg1 ((Ptr Pixbuf -> IO ()) -> IO ()) -> (Ptr Pixbuf -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \Ptr Pixbuf
argPtr1 ->Ptr Pixbuf -> CUInt -> IO ()
gdk_pixbuf_fill Ptr Pixbuf
argPtr1 CUInt
arg2) Pixbuf
pb
  ((Word8 -> CUInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
red) CUInt -> Int -> CUInt
forall a. Bits a => a -> Int -> a
`shiftL` Int
24 CUInt -> CUInt -> CUInt
forall a. Bits a => a -> a -> a
.|.
   (Word8 -> CUInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
green) CUInt -> Int -> CUInt
forall a. Bits a => a -> Int -> a
`shiftL` Int
16 CUInt -> CUInt -> CUInt
forall a. Bits a => a -> a -> a
.|.
   (Word8 -> CUInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
blue) CUInt -> Int -> CUInt
forall a. Bits a => a -> Int -> a
`shiftL` Int
8 CUInt -> CUInt -> CUInt
forall a. Bits a => a -> a -> a
.|.
   (Word8 -> CUInt
forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
alpha))

foreign import ccall unsafe "gdk_pixbuf_get_colorspace"
  gdk_pixbuf_get_colorspace :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_n_channels"
  gdk_pixbuf_get_n_channels :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_has_alpha"
  gdk_pixbuf_get_has_alpha :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_bits_per_sample"
  gdk_pixbuf_get_bits_per_sample :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_pixels"
  gdk_pixbuf_get_pixels :: ((Ptr Pixbuf) -> (IO (Ptr CUChar)))

foreign import ccall unsafe "gdk_pixbuf_get_width"
  gdk_pixbuf_get_width :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_height"
  gdk_pixbuf_get_height :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_rowstride"
  gdk_pixbuf_get_rowstride :: ((Ptr Pixbuf) -> (IO CInt))

foreign import ccall unsafe "gdk_pixbuf_get_option"
  gdk_pixbuf_get_option :: ((Ptr Pixbuf) -> ((Ptr CChar) -> (IO (Ptr CChar))))

foreign import ccall unsafe "gdk_pixbuf_error_quark"
  gdk_pixbuf_error_quark :: CUInt

foreign import ccall unsafe "gdk_pixbuf_new_from_file"
  gdk_pixbuf_new_from_file :: ((Ptr CChar) -> ((Ptr (Ptr ())) -> (IO (Ptr Pixbuf))))

foreign import ccall safe "gdk_pixbuf_new_from_file_at_size"
  gdk_pixbuf_new_from_file_at_size :: ((Ptr CChar) -> (CInt -> (CInt -> ((Ptr (Ptr ())) -> (IO (Ptr Pixbuf))))))

foreign import ccall safe "gdk_pixbuf_new_from_file_at_scale"
  gdk_pixbuf_new_from_file_at_scale :: ((Ptr CChar) -> (CInt -> (CInt -> (CInt -> ((Ptr (Ptr ())) -> (IO (Ptr Pixbuf)))))))

foreign import ccall safe "gdk_pixbuf_get_from_surface"
  gdk_pixbuf_get_from_surface :: ((Ptr ()) -> (CInt -> (CInt -> (CInt -> (CInt -> (IO (Ptr Pixbuf)))))))

foreign import ccall safe "gdk_pixbuf_get_from_window"
  gdk_pixbuf_get_from_window :: ((Ptr DrawWindow) -> (CInt -> (CInt -> (CInt -> (CInt -> (IO (Ptr Pixbuf)))))))

foreign import ccall unsafe "gdk_pixbuf_savev"
  gdk_pixbuf_savev :: ((Ptr Pixbuf) -> ((Ptr CChar) -> ((Ptr CChar) -> ((Ptr (Ptr CChar)) -> ((Ptr (Ptr CChar)) -> ((Ptr (Ptr ())) -> (IO CInt)))))))

foreign import ccall safe "gdk_pixbuf_new"
  gdk_pixbuf_new :: (CInt -> (CInt -> (CInt -> (CInt -> (CInt -> (IO (Ptr Pixbuf)))))))

foreign import ccall safe "gdk_pixbuf_new_from_data"
  gdk_pixbuf_new_from_data :: ((Ptr CUChar) -> (CInt -> (CInt -> (CInt -> (CInt -> (CInt -> (CInt -> ((FunPtr ((Ptr CUChar) -> ((Ptr ()) -> (IO ())))) -> ((Ptr ()) -> (IO (Ptr Pixbuf)))))))))))

foreign import ccall safe "gdk_pixbuf_new_from_xpm_data"
  gdk_pixbuf_new_from_xpm_data :: ((Ptr (Ptr CChar)) -> (IO (Ptr Pixbuf)))

foreign import ccall unsafe "gdk_pixbuf_new_from_inline"
  gdk_pixbuf_new_from_inline :: (CInt -> ((Ptr CUChar) -> (CInt -> ((Ptr (Ptr ())) -> (IO (Ptr Pixbuf))))))

foreign import ccall unsafe "gdk_pixbuf_new_subpixbuf"
  gdk_pixbuf_new_subpixbuf :: ((Ptr Pixbuf) -> (CInt -> (CInt -> (CInt -> (CInt -> (IO (Ptr Pixbuf)))))))

foreign import ccall unsafe "gdk_pixbuf_copy"
  gdk_pixbuf_copy :: ((Ptr Pixbuf) -> (IO (Ptr Pixbuf)))

foreign import ccall safe "gdk_pixbuf_scale_simple"
  gdk_pixbuf_scale_simple :: ((Ptr Pixbuf) -> (CInt -> (CInt -> (CInt -> (IO (Ptr Pixbuf))))))

foreign import ccall unsafe "gdk_pixbuf_scale"
  gdk_pixbuf_scale :: ((Ptr Pixbuf) -> ((Ptr Pixbuf) -> (CInt -> (CInt -> (CInt -> (CInt -> (CDouble -> (CDouble -> (CDouble -> (CDouble -> (CInt -> (IO ()))))))))))))

foreign import ccall unsafe "gdk_pixbuf_composite"
  gdk_pixbuf_composite :: ((Ptr Pixbuf) -> ((Ptr Pixbuf) -> (CInt -> (CInt -> (CInt -> (CInt -> (CDouble -> (CDouble -> (CDouble -> (CDouble -> (CInt -> (CInt -> (IO ())))))))))))))

foreign import ccall safe "gdk_pixbuf_flip"
  gdk_pixbuf_flip :: ((Ptr Pixbuf) -> (CInt -> (IO (Ptr Pixbuf))))

foreign import ccall safe "gdk_pixbuf_rotate_simple"
  gdk_pixbuf_rotate_simple :: ((Ptr Pixbuf) -> (CInt -> (IO (Ptr Pixbuf))))

foreign import ccall unsafe "gdk_pixbuf_add_alpha"
  gdk_pixbuf_add_alpha :: ((Ptr Pixbuf) -> (CInt -> (CUChar -> (CUChar -> (CUChar -> (IO (Ptr Pixbuf)))))))

foreign import ccall unsafe "gdk_pixbuf_copy_area"
  gdk_pixbuf_copy_area :: ((Ptr Pixbuf) -> (CInt -> (CInt -> (CInt -> (CInt -> ((Ptr Pixbuf) -> (CInt -> (CInt -> (IO ())))))))))

foreign import ccall unsafe "gdk_pixbuf_fill"
  gdk_pixbuf_fill :: ((Ptr Pixbuf) -> (CUInt -> (IO ())))