73 lines
2.6 KiB
Elm
73 lines
2.6 KiB
Elm
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module Grapics.Element where
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import Native.Guid (guid)
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import JavaScript as JS
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import List as List
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import Graphics.FillStyle
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type Properties = {
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id : Int,
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width : Int,
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height : Int,
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opacity : Float,
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filling : FillStyle,
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href : JSString,
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tag : JSString
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}
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data Element = Element Properties ElementPrim
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getProp get e = let (Element props _) = e in get props
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widthOf e = getProp .width e
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heightOf e = getProp .height e
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sizeOf e = getProp (\p -> (p.width, p.height)) e
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width w e = case e of Element props prim -> Element {props| width <- w} prim
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height h e = case e of Element props prim -> Element {props| height <- h} prim
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opacity o e = case e of Element props prim -> Element {props| opacity <- o} prim
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color c e = case e of Element props prim -> Element {props| filling <- c} prim
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filling f e = case e of Element props prim -> Element {props| filling <- f} prim
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tag name e = case e of Element props prim ->
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Element {props| tag <- JS.fromString name } prim
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link href e = case e of Element props prim ->
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Element {props| href <- JS.fromString href } prim
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emptyStr = JS.fromString ""
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newElement w h e =
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Element (Properties (guid ()) w h 1 NoFill emptyStr emptyStr) e
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data ElementPrim
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= Image ImageStyle String
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| Container Position Element
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| Flow Direction [Element]
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| Spacer
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| RawHtml JSString
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| DomNode JSElement
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data ImageStyle = Plain | Fitted | Cropped (Int,Int) Int Int
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data Direction = DUp | DDown | DLeft | DRight | DIn | DOut
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image w h src = newElement w h (Image Plain src)
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fittedImage w h src = newElement w h (Image Fitted src)
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croppedImage w h pos src = newElement w h (Image (Cropped pos w h) src)
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container w h pos e = newElement w h (Container pos e)
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spacer w h = newElement w h Spacer
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flow dir es =
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let ws = map widthOf es
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hs = map heightOf es
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newFlow w h = newElement w h (Flow dir es)
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in
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case dir of
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DUp -> newFlow (List.maximum ws) (List.sum hs)
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DDown -> newFlow (List.maximum ws) (List.sum hs)
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DLeft -> newFlow (List.sum ws) (List.maximum hs)
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DRight -> newFlow (List.sum ws) (List.maximum hs)
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DIn -> newFlow (List.maximum ws) (List.maximum hs)
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DOut -> newFlow (List.maximum ws) (List.maximum hs)
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above hi lo = newElement (max (widthOf hi) (widthOf lo)) (heightOf hi + heightOf lo) (Flow DDown [hi,lo])
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below lo hi = newElement (max (widthOf hi) (widthOf lo)) (heightOf hi + heightOf lo) (Flow DDown [hi,lo])
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beside lft rht = newElement (widthOf lft + widthOf rht) (max (heightOf lft) (heightOf rht)) (Flow right [lft,rht])
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