ImColor.hsc

{-# LANGUAGE CApiFFI #-}
{-# LANGUAGE PatternSynonyms #-}

-- This file was generated by dear-bindings-ffi. Do not edit by hand.

module DearImGui.Raw.ImColor
  ( ImColor (..)
  , c_hSV
  , destroy
  , hSV
  , init
  , setHSV
  , withDefault
  ) where

import Control.Exception (bracket_)
import DearImGui.Raw.ImVec4 (ImVec4)
import Foreign.Marshal.Alloc (alloca)
import Foreign.Ptr (Ptr, plusPtr)
import Foreign.Storable (Storable (..))
import GHC.Records (HasField (..))
import Prelude hiding (init)

#include "dcimgui_nodefaultargfunctions.h"

-- structs (opaque)

-- by-value
newtype {-# CTYPE "dcimgui_nodefaultargfunctions.h" "ImColor" #-} ImColor = ImColor
  { value :: ImVec4
  }
  deriving (Eq, Show)
instance Storable ImColor where
  sizeOf _    = #{size ImColor}
  alignment _ = #{alignment ImColor}
  peek p = ImColor <$> #{peek ImColor, Value} p
  poke p v = do
    #{poke ImColor, Value} p v.value

instance HasField "value" (Ptr ImColor) (Ptr ImVec4) where
  getField = #{ptr ImColor, Value}

foreign import capi unsafe "DearImGuiWrappers.h ImColor_Init_wrap"
  init
    :: Ptr ImColor
    -> IO ()

foreign import capi unsafe "DearImGuiWrappers.h ImColor_Destroy_wrap"
  destroy
    :: Ptr ImColor
    -> IO ()

withDefault :: (Ptr ImColor -> IO a) -> IO a
withDefault k = alloca $ \p -> bracket_ (init p) (destroy p) (k p)

-- functions

foreign import capi unsafe "DearImGuiWrappers.h ImColor_HSV_wrap"
  c_hSV
    :: Float -- ^ h
    -> Float -- ^ s
    -> Float -- ^ v
    -> Float -- ^ a
    -> (Ptr ImColor) -- ^ out
    -> IO ()

hSV
  :: Float -- ^ h
  -> Float -- ^ s
  -> Float -- ^ v
  -> Float -- ^ a
  -> IO ImColor
hSV h s v a =
  alloca $ \outPtr -> c_hSV h s v a outPtr >> peek outPtr

-- C: void SetHSV(ImColor* self, float h, float s, float v, float a)
foreign import capi unsafe "dcimgui_nodefaultargfunctions.h ImColor_SetHSV"
  setHSV
    :: (Ptr ImColor) -- ^ self
    -> Float -- ^ h
    -> Float -- ^ s
    -> Float -- ^ v
    -> Float -- ^ a
    -> IO ()