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Add SDL.Input.Mouse.createSystemCursor #226

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Merged
merged 2 commits into from
Dec 2, 2021
Merged

Add SDL.Input.Mouse.createSystemCursor #226

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f6194d3
Add SDL.Input.Mouse.createSystemCursor
phlay Jan 8, 2021
403e710
Update Mouse.hs
dpwiz Dec 2, 2021
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43 changes: 42 additions & 1 deletion src/SDL/Input/Mouse.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,10 +31,12 @@ module SDL.Input.Mouse

-- * Cursor Shape
, Cursor
, SystemCursor(..)
, activeCursor
, createCursor
, freeCursor
, createColorCursor
, createSystemCursor
) where

import Control.Monad (void)
Expand Down Expand Up @@ -208,6 +210,35 @@ getMouseButtons = liftIO $
newtype Cursor = Cursor { unwrapCursor :: Raw.Cursor }
deriving (Eq, Typeable)

data SystemCursor
= SystemCursorArrow
| SystemCursorIBeam
| SystemCursorWait
| SystemCursorCrossHair
| SystemCursorWaitArrow
| SystemCursorSizeNWSE
| SystemCursorSizeNESW
| SystemCursorSizeWE
| SystemCursorSizeNS
| SystemCursorSizeAll
| SystemCursorNo
| SystemCursorHand


instance ToNumber SystemCursor Word32 where
toNumber SystemCursorArrow = Raw.SDL_SYSTEM_CURSOR_ARROW
toNumber SystemCursorIBeam = Raw.SDL_SYSTEM_CURSOR_IBEAM
toNumber SystemCursorWait = Raw.SDL_SYSTEM_CURSOR_WAIT
toNumber SystemCursorCrossHair = Raw.SDL_SYSTEM_CURSOR_CROSSHAIR
toNumber SystemCursorWaitArrow = Raw.SDL_SYSTEM_CURSOR_WAITARROW
toNumber SystemCursorSizeNWSE = Raw.SDL_SYSTEM_CURSOR_SIZENWSE
toNumber SystemCursorSizeNESW = Raw.SDL_SYSTEM_CURSOR_SIZENESW
toNumber SystemCursorSizeWE = Raw.SDL_SYSTEM_CURSOR_SIZEWE
toNumber SystemCursorSizeNS = Raw.SDL_SYSTEM_CURSOR_SIZENS
toNumber SystemCursorSizeAll = Raw.SDL_SYSTEM_CURSOR_SIZEALL
toNumber SystemCursorNo = Raw.SDL_SYSTEM_CURSOR_NO
toNumber SystemCursorHand = Raw.SDL_SYSTEM_CURSOR_HAND

-- | Get or set the currently active cursor. You can create new 'Cursor's with 'createCursor'.
--
-- This 'StateVar' can be modified using '$=' and the current value retrieved with 'get'.
Expand Down Expand Up @@ -240,7 +271,8 @@ createCursor dta msk (V2 w h) (P (V2 hx hy)) =
V.unsafeWith (V.map (bool 0 1) msk) $ \unsafeMsk ->
Raw.createCursor unsafeDta unsafeMsk w h hx hy

-- | Free a cursor created with 'createCursor' and 'createColorCusor'.

-- | Free a cursor created with 'createCursor', 'createColorCusor' and 'createSystemCursor'.
--
-- See @<https://wiki.libsdl.org/SDL_FreeCursor SDL_FreeCursor>@ for C documentation.
freeCursor :: MonadIO m => Cursor -> m ()
Expand All @@ -257,3 +289,12 @@ createColorCursor (Surface surfPtr _) (P (V2 hx hy)) =
liftIO . fmap Cursor $
throwIfNull "SDL.Input.Mouse.createColorCursor" "SDL_createColorCursor" $
Raw.createColorCursor surfPtr hx hy

-- | Create system cursor.
--
-- See @<https://wiki.libsdl.org/SDL_CreateSystemCursor SDL_CreateSystemCursor>@ for C documentation.
createSystemCursor :: MonadIO m => SystemCursor -> m Cursor
createSystemCursor sc =
liftIO . fmap Cursor $
throwIfNull "SDL.Input.Mouse.createSystemCursor" "SDL_CreateSystemCursor" $
Raw.createSystemCursor (toNumber sc)