83 lines
No EOL
2.6 KiB
Haskell
83 lines
No EOL
2.6 KiB
Haskell
{-# LANGUAGE TypeFamilies #-}
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module Phi.Border ( BorderWidth(..)
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, simpleBorderWidth
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, border
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) where
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import Phi.Types
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import Phi.Widget
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import Graphics.Rendering.Cairo
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data BorderWidth = BorderWidth { borderTop :: !Int
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, borderRight :: !Int
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, borderBottom :: !Int
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, borderLeft :: !Int
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} deriving Show
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simpleBorderWidth :: Int -> BorderWidth
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simpleBorderWidth w = BorderWidth w w w w
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borderH :: BorderWidth -> Int
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borderH bw = borderLeft bw + borderRight bw
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borderV :: BorderWidth -> Int
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borderV bw = borderTop bw + borderBottom bw
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data Border = Border { margin :: !BorderWidth
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, borderWidth :: !Int
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, padding :: !BorderWidth
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, borderColor :: !Color
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, backgroundColor :: !Color
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, cornerRadius :: !Double
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, borderWeight :: !Float
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, content :: ![Widget]
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} deriving Show
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instance WidgetClass Border where
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type WidgetData Border = ()
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initialState _ = ()
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minSize border = sum (map (\(Widget w) -> minSize w) c) + borderH p + 2*bw + borderH m
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where
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m = margin border
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bw = borderWidth border
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p = padding border
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c = content border
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weight border = borderWeight border
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render border _ w h = do
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newPath
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arc (x + width - radius) (y + radius) radius (-pi/2) 0
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arc (x + width - radius) (y + height - radius) radius 0 (pi/2)
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arc (x + radius) (y + height - radius) radius (pi/2) pi
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arc (x + radius) (y + radius) radius pi (pi*3/2)
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closePath
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setSourceRGBA fr fg fb fa
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fillPreserve
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setSourceRGBA br bg bb ba
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setLineWidth $ fromIntegral bw
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stroke
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where
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m = margin border
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bw = borderWidth border
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p = padding border
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c = content border
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radius = cornerRadius border
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x = (fromIntegral $ borderLeft m) + (fromIntegral bw)/2
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y = (fromIntegral $ borderTop m) + (fromIntegral bw)/2
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width = fromIntegral $ w - borderH m - bw
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height = fromIntegral $ h - borderV m - bw
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(br, bg, bb, ba) = borderColor border
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(fr, fg, fb, fa) = backgroundColor border
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border :: BorderWidth -> Int -> BorderWidth -> Color -> Color -> Double -> Float -> [Widget] -> Widget
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border m bw p border bc cr w c = Widget $ Border m bw p border bc cr w c |