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Split node in half. Add struct for input events.
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parent
e809724dad
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14
gui/Main.hs
14
gui/Main.hs
@ -40,6 +40,8 @@ rightMouseButton = 3
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nodeSize :: (Double, Double)
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nodeSize = (100, 40)
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-- TODO USE newtype for element ID.
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-- | A graphical element that can be clicked
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data Element = Element
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{ _elPosition :: !(Double, Double) -- ^ (x, y) of top left corner
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@ -52,6 +54,7 @@ data Inputs = Inputs
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{ _inMouseXandY :: !(Double, Double)
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, _inTime :: SystemTime
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, _inPrevTime :: SystemTime
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, _inEvents :: [InputEvents]
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}
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data AppState = AppState
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@ -61,6 +64,10 @@ data AppState = AppState
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, _asFPSr :: Double -- ^ FPS rouned down to nearest hundred if over 200 fps.
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}
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data InputEvents =
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-- Which node was clicked and the relative click position within a node.
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LeftClickOnNode Int (Double, Double)
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emptyAppState :: AppState
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emptyAppState = AppState
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{ _asMovingNode = Nothing
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@ -74,6 +81,7 @@ emptyInputs = Inputs
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{ _inMouseXandY = (0, 0)
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, _inTime = MkSystemTime 0 0
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, _inPrevTime = MkSystemTime 0 0
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, _inEvents = mempty
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}
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renderCairo :: Coercible a (ManagedPtr ()) => a -> Render c -> IO c
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@ -110,12 +118,16 @@ drawNode (elemId, Element{..}) = do
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let
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(x, y) = _elPosition
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(width, height) = _elSize
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halfWidth = width / 2
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setSourceRGB 1 0 0
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setLineWidth 1
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rectangle x y width height
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rectangle x y halfWidth height
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showText (show elemId)
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stroke
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setSourceRGB 0 1 0
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rectangle (x + halfWidth) y halfWidth height
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stroke
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updateBackground :: p -> IORef AppState -> Render (())
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updateBackground _canvas stateRef = do
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