moved user event handling into UI/Callbacks.hs

src/Main.hs

@@ -55,11 +55,11 @@ import           Importer.IQM.Parser
 testParser :: String -> IO ()
 testParser a = putStrLn . show  =<< parseIQM a
 {-do
-		f <- B.readFile a
+        f <- B.readFile a
-		putStrLn "reading in:"
+        putStrLn "reading in:"
-		putStrLn $ show f
+        putStrLn $ show f
-		putStrLn "parsed:"
+        putStrLn "parsed:"
-		parseTest parseIQM f-}
+        parseTest parseIQM f-}
 
 --------------------------------------------------------------------------------
 
@@ -322,81 +322,18 @@ processEvents = do
 
 processEvent :: Event -> Pioneers ()
 processEvent e = do
-        env <- ask
+    eventCallback e
-        case eventData e of
+    -- env <- ask
-            Window _ winEvent ->
+    case SDL.eventData e of
-                case winEvent of
+         SDL.Window _ winEvent -> -- windowID event
-                    Closing ->
+            case winEvent of
-                            modify $ window.shouldClose .~ True
+                SDL.Closing ->
-                    Resized {windowResizedTo=size} -> do
-                            modify $ (window . width .~ sizeWidth size)
-                                   . (window . height .~ sizeHeight size)
-                            adjustWindow
-                    SizeChanged ->
-                            adjustWindow
-                    _ ->
-                        return ()
-                        --liftIO $ putStrLn $ unwords ["Unhandled Window-Event:",show e]
-            Keyboard movement _ _{-isRepeated-} key -> --up/down window(ignored) true/false actualKey
-                     -- need modifiers? use "keyModifiers key" to get them
-                let aks = keyboard.arrowsPressed in
-                case keyScancode key of
-                    SDL.R    ->
-                        liftIO $ do
-                                r <- getRenderer $ env ^. windowObject
-                                putStrLn $ unwords ["Renderer: ",show r]
-                    Escape   ->
                         modify $ window.shouldClose .~ True
-                    SDL.Left  ->
+                SDL.Resized {windowResizedTo=size} -> do
-                        modify $ aks.left  .~ (movement == KeyDown)
+                        modify $ (window . width .~ SDL.sizeWidth size)
-                    SDL.Right ->
+                               . (window . height .~ SDL.sizeHeight size)
-                        modify $ aks.right .~ (movement == KeyDown)
+                        adjustWindow
-                    SDL.Up    ->
+                SDL.SizeChanged ->
-                        modify $ aks.up    .~ (movement == KeyDown)
+                        adjustWindow
-                    SDL.Down  ->
+                _ -> return ()
-                        modify $ aks.down  .~ (movement == KeyDown)
+         _ -> return ()
-                    SDL.KeypadPlus ->
-                        when (movement == KeyDown) $ do
-                            modify $ (gl.glMap.stateTessellationFactor) %~ ((min 5) . (+1))
-                            state <- get
-                            liftIO $ putStrLn $ unwords ["Tessellation at: ", show $ state ^. gl.glMap.stateTessellationFactor]
-                    SDL.KeypadMinus ->
-                        when (movement == KeyDown) $ do
-                            modify $ (gl.glMap.stateTessellationFactor) %~ ((max 1) . (+(-1)))
-                            state <- get
-                            liftIO $ putStrLn $ unwords ["Tessellation at: ", show $ state ^. gl.glMap.stateTessellationFactor]
-                    _ ->
-                        return ()
-            MouseMotion _ _{-mouseId-} _{-st-} (SDL.Position x y) _{-xrel-} _{-yrel-} -> do
-                state <- get
-                when (state ^. mouse.isDown && not (state ^. mouse.isDragging)) $
-                    modify $ (mouse.isDragging .~ True)
-                           . (mouse.dragStartX .~ (fromIntegral x))
-                           . (mouse.dragStartY .~ (fromIntegral y))
-                           . (mouse.dragStartXAngle .~ (state ^. camera.xAngle))
-                           . (mouse.dragStartYAngle .~ (state ^. camera.yAngle))
-
-                modify $ (mouse.mousePosition. Types._x .~ (fromIntegral x))
-                       . (mouse.mousePosition. Types._y .~ (fromIntegral y))
-            MouseButton _ _{-mouseId-} button state (SDL.Position x y) ->
-                case button of
-                    LeftButton -> do
-                        let pressed = state == Pressed
-                        modify $ mouse.isDown .~ pressed
-                        unless pressed $ do
-                            st <- get
-                            if st ^. mouse.isDragging then
-                                modify $ mouse.isDragging .~ False
-                            else
-                                clickHandler (UI.Callbacks.Pixel x y)
-                    RightButton -> do
-                        when (state == Released) $ alternateClickHandler (UI.Callbacks.Pixel x y)
-                    _ ->
-                        return ()
-            MouseWheel _ _{-mouseId-} _{-hscroll-} vscroll -> do
-                state <- get
-                let zDist' = (state ^. camera.zDist) + realToFrac (negate vscroll) in
-                  modify $ camera.zDist .~ (curb (env ^. zDistClosest) (env ^. zDistFarthest) zDist')
-            Quit -> modify $ window.shouldClose .~ True
-            -- there is more (joystic, touchInterface, ...), but currently ignored
-            _ ->  liftIO $ putStrLn $ unwords ["Not processing Event:", show e]

src/UI/Callbacks.hs

@@ -2,25 +2,25 @@ module UI.Callbacks where
 
 
 import qualified Graphics.Rendering.OpenGL.GL         as GL
-import           Control.Lens                         ((^.), (.~))
+import           Control.Lens                         ((^.), (.~), (%~))
-import           Control.Monad                        (liftM)
+import           Control.Monad                        (liftM, when, unless)
-import           Control.Monad.RWS.Strict             (get, modify)
+import           Control.Monad.RWS.Strict             (ask, get, modify)
 import           Control.Monad.Trans                  (liftIO)
 import qualified Data.HashMap.Strict                  as Map
 import           Data.List                            (foldl')
 import           Data.Maybe
 import           Foreign.Marshal.Array (pokeArray)
 import           Foreign.Marshal.Alloc (allocaBytes)
+import qualified Graphics.UI.SDL                      as SDL
 import           Render.Misc                          (genColorData)
 
 import Types
+import Render.Misc                                    (curb)
 import UI.UIBaseData
 import UI.UIClasses
 import UI.UIOperations
 
 
-data Pixel = Pixel Int Int
-
 createGUI :: (Map.HashMap UIId (GUIAny Pioneers), [UIId])
 createGUI = (Map.fromList [ (UIId 0, GUIAnyP $ GUIPanel $ GUIContainer 0 0 0 0 [UIId 1, UIId 2] 0)
                           , (UIId 1, GUIAnyC $ GUIContainer 20 50 120 80 [] 1)
@@ -45,19 +45,93 @@ getRoots = do
   let hMap = state ^. ui.uiMap
   return $ toGUIAnys hMap rootIds
 
-testMessage :: w -> ScreenUnit -> ScreenUnit -> Pioneers w
+testMessage :: w -> Pixel -> Pioneers w
-testMessage w x y = do
+testMessage w (x, y) = do
   liftIO $ putStrLn ("\tclick on " ++ show x ++ "," ++ show y)
   return w
 
+eventCallback :: SDL.Event -> Pioneers ()
+eventCallback e = do
+        env <- ask
+        case SDL.eventData e of
+            SDL.Window _ winEvent -> -- windowID event
+                -- TODO: resize GUI
+                return ()
+            SDL.Keyboard movement _ _ key -> -- keyMovement windowID keyRepeat keySym
+                     -- need modifiers? use "keyModifiers key" to get them
+                let aks = keyboard.arrowsPressed in
+                case SDL.keyScancode key of
+                    SDL.R    ->
+                        liftIO $ do
+                                r <- SDL.getRenderer $ env ^. windowObject
+                                putStrLn $ unwords ["Renderer: ",show r]
+                    SDL.Escape   ->
+                        modify $ window.shouldClose .~ True
+                    SDL.Left  ->
+                        modify $ aks.left  .~ (movement == SDL.KeyDown)
+                    SDL.Right ->
+                        modify $ aks.right .~ (movement == SDL.KeyDown)
+                    SDL.Up    ->
+                        modify $ aks.up    .~ (movement == SDL.KeyDown)
+                    SDL.Down  ->
+                        modify $ aks.down  .~ (movement == SDL.KeyDown)
+                    SDL.KeypadPlus ->
+                        when (movement == SDL.KeyDown) $ do
+                            modify $ (gl.glMap.stateTessellationFactor) %~ ((min 5) . (+1))
+                            state <- get
+                            liftIO $ putStrLn $ unwords ["Tessellation at: ", show $ state ^. gl.glMap.stateTessellationFactor]
+                    SDL.KeypadMinus ->
+                        when (movement == SDL.KeyDown) $ do
+                            modify $ (gl.glMap.stateTessellationFactor) %~ ((max 1) . (+(-1)))
+                            state <- get
+                            liftIO $ putStrLn $ unwords ["Tessellation at: ", show $ state ^. gl.glMap.stateTessellationFactor]
+                    _ ->
+                        return ()
+            SDL.MouseMotion _ _ _ (SDL.Position x y) _ _ -> -- windowID mouseID motionState motionPosition xrel yrel
+                do
+                state <- get
+                when (state ^. mouse.isDown && not (state ^. mouse.isDragging)) $
+                    modify $ (mouse.isDragging .~ True)
+                           . (mouse.dragStartX .~ (fromIntegral x))
+                           . (mouse.dragStartY .~ (fromIntegral y))
+                           . (mouse.dragStartXAngle .~ (state ^. camera.xAngle))
+                           . (mouse.dragStartYAngle .~ (state ^. camera.yAngle))
+
+                modify $ (mouse.mousePosition. Types._x .~ (fromIntegral x))
+                       . (mouse.mousePosition. Types._y .~ (fromIntegral y))
+            SDL.MouseButton _ _ button state (SDL.Position x y) -> -- windowID mouseID button buttonState buttonAt
+                case button of
+                    SDL.LeftButton -> do
+                        let pressed = state == SDL.Pressed
+                        modify $ mouse.isDown .~ pressed
+                        unless pressed $ do
+                            st <- get
+                            if st ^. mouse.isDragging then
+                                modify $ mouse.isDragging .~ False
+                            else
+                                clickHandler (x, y)
+                    SDL.RightButton -> do
+                        when (state == SDL.Released) $ alternateClickHandler (x, y)
+                    _ ->
+                        return ()
+            SDL.MouseWheel _ _ _ vscroll -> -- windowID mouseID hScroll vScroll
+                do
+                state <- get
+                let zDist' = (state ^. camera.zDist) + realToFrac (negate vscroll) in
+                  modify $ camera.zDist .~ (curb (env ^. zDistClosest) (env ^. zDistFarthest) zDist')
+            -- there is more (joystic, touchInterface, ...), but currently ignored
+            SDL.Quit -> modify $ window.shouldClose .~ True
+            _ ->  liftIO $ putStrLn $ unwords ["Not processing Event:", show e]
+          
+
 -- | Handler for UI-Inputs.
 --   Indicates a primary click on something (e.g. left-click, touch on Touchpad, fire on Gamepad, ...
 clickHandler :: Pixel -> Pioneers ()
-clickHandler (Pixel x y) = do
+clickHandler pos@(x,y) = do
   state <- get
   let hMap = state ^. ui.uiMap
   roots <- getRootIds
-  hits <- liftM concat $ mapM (getInsideId hMap x y) roots
+  hits <- liftM concat $ mapM (getInsideId hMap pos) roots
   case hits of
        [] -> liftIO $ putStrLn $ unwords ["button press on (",show x,",",show y,")"]
        _  -> do
@@ -70,8 +144,8 @@ clickHandler (Pixel x y) = do
                             ++ " at [" ++ show x ++ "," ++ show y ++ "]"
            case w of
                 (GUIAnyB b h) -> do
-                    (b', h') <- onMousePressed x y b h
+                    (b', h') <- onMousePressed pos b h
-                    (b'', h'') <- onMouseReleased x y b' h'
+                    (b'', h'') <- onMouseReleased pos b' h'
                     return $ Just (uid, GUIAnyB b'' h'')
                 _ -> return Nothing
            ) $ hits
@@ -85,7 +159,7 @@ clickHandler (Pixel x y) = do
 -- | Handler for UI-Inputs.
 --   Indicates an alternate click on something (e.g. right-click, touch&hold on Touchpad, ...
 alternateClickHandler :: Pixel -> Pioneers ()
-alternateClickHandler (Pixel x y) = liftIO $ putStrLn $ unwords ["alternate press on (",show x,",",show y,")"]
+alternateClickHandler (x,y) = liftIO $ putStrLn $ unwords ["alternate press on (",show x,",",show y,")"]
 
 
 -- | informs the GUI to prepare a blitting of state ^. gl.glHud.hudTexture

src/UI/UIBaseData.hs

@@ -9,6 +9,8 @@ import Data.Ix
 -- |Unit of screen/window
 type ScreenUnit = Int
 
+-- | @x@ and @y@ position on screen. 
+type Pixel = (ScreenUnit, ScreenUnit)
 
 newtype UIId = UIId Int deriving (Eq,Ord,Show,Read,Bounded,Ix,Hashable)
 
@@ -34,7 +36,7 @@ data MouseHandlerSwitch h = MouseHandlerSwitch h deriving (Eq, Show)
 
 -- |A 'UI.UIClasses.MouseHandler' with button behaviour.
 data ButtonHandler m w = ButtonHandler 
-    { _action :: (w -> ScreenUnit -> ScreenUnit -> m w) }
+    { _action :: (w -> Pixel -> m w) }
 instance Show (ButtonHandler m w) where
   show _ = "ButtonHandler ***"
 

src/UI/UIClasses.hs

@@ -33,11 +33,10 @@ class (Monad m) => GUIWidget m uiw where
     --  
     --  The default implementations tests if the point is within the rectangle specified by the 
     --  'getBoundary' function.
-    isInside :: ScreenUnit -- ^screen x coordinate
+    isInside :: Pixel  -- ^screen position
-                 -> ScreenUnit -- ^screen y coordinate
+             -> uiw    -- ^the parent widget
-                 -> uiw       -- ^the parent widget
+             -> m Bool
-                 -> m Bool
+    isInside (x',y') wg = do
-    isInside x' y' wg = do
         (x, y, w, h) <- getBoundary wg
         return $ (x' - x <= w) && (x' - x >= 0) && (y' - y <= h) && (y' - y >= 0)
 
@@ -63,109 +62,102 @@ class GUIClickable w where
 class Monad m => MouseHandler a m w where
     -- |The function 'onMousePressed' is called when the primary button is pressed
     --  while inside a screen coordinate within the widget ('isInside').
-    onMousePressed :: ScreenUnit -- ^screen x coordinate 
+    onMousePressed :: Pixel -- ^screen position
-                   -> ScreenUnit -- ^screen y coordinate
                    -> w -- ^widget the event is invoked on
                    -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMousePressed _ _ wg a = return (wg, a)
+    onMousePressed _ wg a = return (wg, a)
 
     -- |The function 'onMouseReleased' is called when the primary button is released
     --  while the pressing event occured within the widget ('isInside').
     --  
     --  Thus, the mouse is either within the widget or outside while still dragging.
-    onMouseReleased :: ScreenUnit -- ^screen x coordinate
+    onMouseReleased :: Pixel  -- ^screen position
-                    -> ScreenUnit  -- ^screen x coordinate
                     -> w -- ^wdiget the event is invoked on
                     -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMouseReleased _ _ wg a = return (wg, a)
+    onMouseReleased _ wg a = return (wg, a)
 
     -- |The function 'onMousePressed' is called when the secondary button is pressed
     --  while inside a screen coordinate within the widget ('isInside').
-    onMousePressedAlt :: ScreenUnit -- ^screen x coordinate 
+    onMousePressedAlt :: Pixel  -- ^screen position
-                   -> ScreenUnit -- ^screen y coordinate
+                      -> w -- ^widget the event is invoked on
-                   -> w -- ^widget the event is invoked on
+                      -> a -> m (w, a) -- ^widget after the event and the altered handler
-                   -> a -> m (w, a) -- ^widget after the event and the altered handler
+    onMousePressedAlt _ wg a = return (wg, a)
-    onMousePressedAlt _ _ wg a = return (wg, a)
 
     -- |The function 'onMouseReleased' is called when the secondary button is released
     --  while the pressing event occured within the widget ('isInside').
     --  
     --  Thus, the mouse is either within the widget or outside while still dragging.
-    onMouseReleasedAlt :: ScreenUnit -- ^screen x coordinate
+    onMouseReleasedAlt :: Pixel  -- ^screen position
-                       -> ScreenUnit  -- ^screen x coordinate
                        -> w -- ^wdiget the event is invoked on
                        -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMouseReleasedAlt _ _ wg a = return (wg, a)
+    onMouseReleasedAlt _ wg a = return (wg, a)
                         
     -- |The function 'onMouseMove' is invoked when the mouse is moved inside the
     --  widget's space ('isInside').
-    onMouseMove :: ScreenUnit -- ^screen x coordinate
+    onMouseMove :: Pixel  -- ^screen position
-                -> ScreenUnit -- ^screen y coordinate
                 -> w -- ^widget the event is invoked on
                 -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMouseMove _ _ wg a = return (wg, a)
+    onMouseMove _ wg a = return (wg, a)
     
     -- |The function 'onMouseMove' is invoked when the mouse enters the
     --  widget's space ('isInside').
-    onMouseEnter :: ScreenUnit -- ^screen x coordinate
+    onMouseEnter :: Pixel  -- ^screen position
-                 -> ScreenUnit -- ^screen y coordinate
                  -> w -- ^widget the event is invoked on
                  -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMouseEnter _ _ wg a = return (wg, a)
+    onMouseEnter _ wg a = return (wg, a)
     
     -- |The function 'onMouseMove' is invoked when the mouse leaves the
     --  widget's space ('isInside').
-    onMouseLeave :: ScreenUnit -- ^screen x coordinate
+    onMouseLeave :: Pixel  -- ^screen position
-                 -> ScreenUnit -- ^screen y coordinate
                  -> w -- ^widget the event is invoked on
                  -> a -> m (w, a) -- ^widget after the event and the altered handler
-    onMouseLeave _ _ wg a = return (wg, a)
+    onMouseLeave _ wg a = return (wg, a)
 
 instance (MouseHandler h m w) => MouseHandler (MouseHandlerSwitch h) m w where
-    onMousePressed x y w (MouseHandlerSwitch h) = do
+    onMousePressed p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMousePressedAlt x y w h
+        (w', h') <- onMousePressedAlt p w h
         return (w', MouseHandlerSwitch h')
-    onMouseReleased x y w (MouseHandlerSwitch h) = do
+    onMouseReleased p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMouseReleasedAlt x y w h
+        (w', h') <- onMouseReleasedAlt p w h
         return (w', MouseHandlerSwitch h')
-    onMousePressedAlt x y w (MouseHandlerSwitch h) = do
+    onMousePressedAlt p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMousePressed x y w h
+        (w', h') <- onMousePressed p w h
         return (w', MouseHandlerSwitch h')
-    onMouseReleasedAlt x y w (MouseHandlerSwitch h) = do
+    onMouseReleasedAlt p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMouseReleased x y w h
+        (w', h') <- onMouseReleased p w h
         return (w', MouseHandlerSwitch h')
-    onMouseMove x y w (MouseHandlerSwitch h) = do
+    onMouseMove p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMouseMove x y w h
+        (w', h') <- onMouseMove p w h
         return (w', MouseHandlerSwitch h')
-    onMouseEnter x y w (MouseHandlerSwitch h) = do
+    onMouseEnter p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMouseEnter x y w h
+        (w', h') <- onMouseEnter p w h
         return (w', MouseHandlerSwitch h')
-    onMouseLeave x y w (MouseHandlerSwitch h) = do
+    onMouseLeave p w (MouseHandlerSwitch h) = do
-        (w', h') <- onMouseLeave x y w h
+        (w', h') <- onMouseLeave p w h
         return (w', MouseHandlerSwitch h')
 
 instance (Monad m, GUIClickable w) => MouseHandler (ButtonHandler m w) m w where
     -- |Change 'UIButtonState's '_buttonstateIsFiring' to @True@.
-    onMousePressed _ _ wg h =
+    onMousePressed _ wg h =
         return (updateButtonState (\s -> s {_buttonstateIsFiring = True}) wg, h)
 
     -- |Change 'UIButtonState's '_buttonstateIsFiring' to @False@ and
     --  call 'action' if inside the widget or
     --  set '_buttonstateIsDeferred' to false otherwise.
-    onMouseReleased x y wg h@(ButtonHandler action) = if _buttonstateIsFiring $ getButtonState wg 
+    onMouseReleased p wg h@(ButtonHandler action) = if _buttonstateIsFiring $ getButtonState wg 
         then do
-            wg' <- action wg x y
+            wg' <- action wg p
             return (updateButtonState (\s -> s {_buttonstateIsFiring = False}) wg', h)
         else return (updateButtonState (\s -> s {_buttonstateIsDeferred = False}) wg, h)
     
     -- |Do nothing.
-    onMouseMove _ _ wg h = return (wg, h)
+    onMouseMove _ wg h = return (wg, h)
     
     -- |Set 'UIButtonState's '_buttonstateIsReady' to @True@ and
     --  update dragging state (only drag if inside widget).
     --  In detail, change 'UIButtonState's '_buttonstateIsDeferred' to '_buttonstateIsFiring's current value
     --   and set '_buttonstateIsFiring' to @False@. 
-    onMouseEnter _ _ wg h = return
+    onMouseEnter _ wg h = return
         (updateButtonState (\s -> s { _buttonstateIsFiring = _buttonstateIsDeferred s
                                     , _buttonstateIsDeferred = False
                                     , _buttonstateIsReady = True
@@ -176,7 +168,7 @@ instance (Monad m, GUIClickable w) => MouseHandler (ButtonHandler m w) m w where
     --  update dragging state (only drag if inside widget).
     --  In detail, change 'UIButtonState's '_buttonstateIsFiring' to '_buttonstateIsDeferred's current value
     --  and set '_buttonstateIsDeferred's' to @False@.
-    onMouseLeave _ _ wg h = return
+    onMouseLeave _ wg h = return
         (updateButtonState (\s -> s { _buttonstateIsFiring = False
                                     , _buttonstateIsDeferred = _buttonstateIsFiring s
                                     , _buttonstateIsReady = False
@@ -193,9 +185,9 @@ instance GUIWidget T.Pioneers (GUIAny T.Pioneers) where
     getChildren (GUIAnyC w) = getChildren w
     getChildren (GUIAnyP w) = getChildren w
     getChildren (GUIAnyB w _) = getChildren w
-    isInside x y (GUIAnyC w) = (isInside x y) w
+    isInside p (GUIAnyC w) = (isInside p) w
-    isInside x y (GUIAnyP w) = (isInside x y) w
+    isInside p (GUIAnyP w) = (isInside p) w
-    isInside x y (GUIAnyB w _) = (isInside x y) w
+    isInside p (GUIAnyB w _) = (isInside p) w
     getPriority (GUIAnyC w) = getPriority w
     getPriority (GUIAnyP w) = getPriority w
     getPriority (GUIAnyB w _) = getPriority w

src/UI/UIOperations.hs

@@ -32,16 +32,15 @@ toGUIAnys m = mapMaybe (flip Map.lookup m)
 --  
 --  This function returns the widgets themselves unlike 'getInsideId'.
 getInside :: Map.HashMap UIId (GUIAny Pioneers) -- ^map containing ui widgets
-             -> ScreenUnit -- ^screen x coordinate
+             -> Pixel  -- ^screen position
-             -> ScreenUnit -- ^screen y coordinate
              -> GUIAny Pioneers  -- ^the parent widget
              -> Pioneers [GUIAny Pioneers]
-getInside hMap x' y' wg = do
+getInside hMap (x',y') wg = do
-  inside <- isInside x' y' wg
+  inside <- isInside (x',y') wg
   if inside -- test inside parent's bounding box
   then do
        childrenIds <- getChildren wg
-       hitChildren <- liftM concat $ mapM (getInside hMap x' y') (toGUIAnys hMap childrenIds)
+       hitChildren <- liftM concat $ mapM (getInside hMap (x',y')) (toGUIAnys hMap childrenIds)
        case hitChildren of
             [] -> return [wg]
             _ -> return hitChildren
@@ -58,17 +57,16 @@ getInside hMap x' y' wg = do
 --  
 --  This function returns the 'UIId's of the widgets unlike 'getInside'.
 getInsideId :: Map.HashMap UIId (GUIAny Pioneers) -- ^map containing ui widgets
-            -> ScreenUnit -- ^screen x coordinate
+            -> Pixel  -- ^screen position
-            -> ScreenUnit -- ^screen y coordinate
             -> UIId  -- ^the parent widget
             -> Pioneers [UIId]
-getInsideId hMap x' y' uid = do
+getInsideId hMap (x',y') uid = do
   let wg = toGUIAny hMap uid
-  inside <- isInside x' y' wg
+  inside <- isInside (x',y') wg
   if inside -- test inside parent's bounding box
     then do
       childrenIds <- getChildren wg
-      hitChildren <- liftM concat $ mapM (getInsideId hMap x' y') childrenIds
+      hitChildren <- liftM concat $ mapM (getInsideId hMap (x',y')) childrenIds
       case hitChildren of
            [] -> return [uid]
            _  -> return hitChildren