{-|
Module      : Monomer.Core.Style
Copyright   : (c) 2018 Francisco Vallarino
License     : BSD-3-Clause (see the LICENSE file)
Maintainer  : fjvallarino@gmail.com
Stability   : experimental
Portability : non-portable

Helper functions for creating style configurations, and corresponding instances.
-}
module Monomer.Core.Style (
  module Monomer.Core.StyleTypes,
  module Monomer.Core.ThemeTypes,
  paddingH,
  paddingV,
  fixedSize,
  flexSize,
  expandSize,
  minSize,
  maxSize,
  rangeSize
) where

import Control.Lens ((&), (.~), (?~), non)
import Data.Default

import Monomer.Core.Combinators
import Monomer.Core.StyleTypes
import Monomer.Core.ThemeTypes
import Monomer.Graphics.Types

import qualified Monomer.Core.Lens as L

-- | Creates an equally sized padding left and right.
paddingH :: (Semigroup a, CmbPaddingL a, CmbPaddingR a) => Double -> a
paddingH p = paddingL p <> paddingR p

-- | Creates an equally sized padding top and bottom.
paddingV :: (Semigroup a, CmbPaddingT a, CmbPaddingB a) => Double -> a
paddingV p = paddingT p <> paddingB p

-- | Creates a SizeReq with fixed size.
fixedSize :: Double -> SizeReq
fixedSize s = def
  & L.fixed .~ s

-- | Creates a SizeReq with flex size.
flexSize :: Double -> Double -> SizeReq
flexSize s f = def
  & L.flex .~ s
  & L.factor .~ f

-- | Creates a SizeReq with expand size.
expandSize :: Double -> Double -> SizeReq
expandSize s f = def
  & L.flex .~ s
  & L.extra .~ s
  & L.factor .~ f

-- | Creates a SizeReq with equal fixed and extra size, using the given factor.
minSize :: Double -> Double -> SizeReq
minSize s f = def
  & L.fixed .~ s
  & L.extra .~ s
  & L.factor .~ f

-- | Creates a SizeReq with flex size, using the given factor.
maxSize :: Double -> Double -> SizeReq
maxSize s f = def
  & L.flex .~ s
  & L.factor .~ f

-- | Creates a SizeReq with fixed and flex size, using the given factor.
rangeSize :: Double -> Double -> Double -> SizeReq
rangeSize s1 s2 f = def
  & L.fixed .~ s1
  & L.flex .~ s2 - s1
  & L.factor .~ f

-- Size
instance CmbWidth SizeReq where
  width w = fixedSize w

instance CmbHeight SizeReq where
  height h = fixedSize h

instance CmbFlexWidth SizeReq where
  flexWidth w = expandSize w 1

instance CmbFlexHeight SizeReq where
  flexHeight h = expandSize h 1

instance CmbMinWidth SizeReq where
  minWidth w = minSize w 1

instance CmbMinHeight SizeReq where
  minHeight h = minSize h 1

instance CmbMaxWidth SizeReq where
  maxWidth w = maxSize w 1

instance CmbMaxHeight SizeReq where
  maxHeight h = maxSize h 1

instance CmbExpandWidth SizeReq where
  expandWidth w = expandSize w 1

instance CmbExpandHeight SizeReq where
  expandHeight h = expandSize h 1

instance CmbRangeWidth SizeReq where
  rangeWidth w1 w2 = rangeSize w1 w2 1

instance CmbRangeHeight SizeReq where
  rangeHeight h1 h2 = rangeSize h1 h2 1

-- Text
instance CmbTextFont TextStyle where
  textFont font = def & L.font ?~ font

instance CmbTextSize TextStyle where
  textSize size = def & L.fontSize ?~ FontSize size

instance CmbTextSpaceH TextStyle where
  textSpaceH space = def & L.fontSpaceH ?~ FontSpace space

instance CmbTextSpaceV TextStyle where
  textSpaceV space = def & L.fontSpaceV ?~ FontSpace space

instance CmbTextColor TextStyle where
  textColor col = def & L.fontColor ?~ col

instance CmbTextLeft TextStyle where
  textLeft_ False = def
  textLeft_ True = textAlignH ATLeft

instance CmbTextCenter TextStyle where
  textCenter_ False = def
  textCenter_ True = textAlignH ATCenter

instance CmbTextRight TextStyle where
  textRight_ False = def
  textRight_ True = textAlignH ATRight

instance CmbTextTop TextStyle where
  textTop_ False = def
  textTop_ True = textAlignV ATTop

instance CmbTextMiddle TextStyle where
  textMiddle_ False = def
  textMiddle_ True = textAlignV ATMiddle

instance CmbTextAscender TextStyle where
  textAscender_ False = def
  textAscender_ True = textAlignV ATAscender

instance CmbTextLowerX TextStyle where
  textLowerX_ False = def
  textLowerX_ True = textAlignV ATLowerX

instance CmbTextBottom TextStyle where
  textBottom_ False = def
  textBottom_ True = textAlignV ATBottom

instance CmbTextBaseline TextStyle where
  textBaseline_ False = def
  textBaseline_ True = textAlignV ATBaseline

instance CmbTextUnderline TextStyle where
  textUnderline_ under = def & L.underline ?~ under

instance CmbTextOverline TextStyle where
  textOverline_ over = def & L.overline ?~ over

instance CmbTextThroughline TextStyle where
  textThroughline_ through = def & L.throughline ?~ through

-- Padding

instance CmbPadding Padding where
  padding padd = Padding jp jp jp jp where
    jp = Just padd

instance CmbPaddingL Padding where
  paddingL padd = def & L.left ?~ padd

instance CmbPaddingR Padding where
  paddingR padd = def & L.right ?~ padd

instance CmbPaddingT Padding where
  paddingT padd = def & L.top ?~ padd

instance CmbPaddingB Padding where
  paddingB padd = def & L.bottom ?~ padd

-- Border

instance CmbBorder Border where
  border w col = Border bs bs bs bs where
    bs = Just (BorderSide w col)

instance CmbBorderL Border where
  borderL w col = def & L.left ?~ BorderSide w col

instance CmbBorderR Border where
  borderR w col = def & L.right ?~ BorderSide w col

instance CmbBorderT Border where
  borderT w col = def & L.top ?~ BorderSide w col

instance CmbBorderB Border where
  borderB w col = def & L.bottom ?~ BorderSide w col

-- Radius

instance CmbRadius Radius where
  radius rad = Radius jrad jrad jrad jrad where
    jrad = Just $ radiusCorner rad

instance CmbRadiusTL Radius where
  radiusTL rad = def & L.topLeft ?~ radiusCorner rad

instance CmbRadiusTR Radius where
  radiusTR rad = def & L.topRight ?~ radiusCorner rad

instance CmbRadiusBL Radius where
  radiusBL rad = def & L.bottomLeft ?~ radiusCorner rad

instance CmbRadiusBR Radius where
  radiusBR rad = def & L.bottomRight ?~ radiusCorner rad

--
-- StyleState instances
--

-- Size
instance CmbWidth StyleState where
  width w = def & L.sizeReqW ?~ width w

instance CmbHeight StyleState where
  height h = def & L.sizeReqH ?~ height h

instance CmbFlexWidth StyleState where
  flexWidth w = def & L.sizeReqW ?~ flexWidth w

instance CmbFlexHeight StyleState where
  flexHeight h = def & L.sizeReqH ?~ flexHeight h

instance CmbMinWidth StyleState where
  minWidth w = def & L.sizeReqW ?~ minWidth w

instance CmbMinHeight StyleState where
  minHeight h = def & L.sizeReqH ?~ minHeight h

instance CmbMaxWidth StyleState where
  maxWidth w = def & L.sizeReqW ?~ maxWidth w

instance CmbMaxHeight StyleState where
  maxHeight h = def & L.sizeReqH ?~ maxHeight h

instance CmbExpandWidth StyleState where
  expandWidth w = def & L.sizeReqW ?~ expandWidth w

instance CmbExpandHeight StyleState where
  expandHeight h = def & L.sizeReqH ?~ expandHeight h

instance CmbRangeWidth StyleState where
  rangeWidth w1 w2 = def & L.sizeReqW ?~ rangeWidth w1 w2

instance CmbRangeHeight StyleState where
  rangeHeight h1 h2 = def & L.sizeReqH ?~ rangeHeight h1 h2

instance CmbSizeReqW StyleState where
  sizeReqW srW = def & L.sizeReqW ?~ srW

instance CmbSizeReqH StyleState where
  sizeReqH srH = def & L.sizeReqH ?~ srH

-- Color

instance CmbBgColor StyleState where
  bgColor col = def & L.bgColor ?~ col

instance CmbFgColor StyleState where
  fgColor col = def & L.fgColor ?~ col

instance CmbSndColor StyleState where
  sndColor col = def & L.sndColor ?~ col

instance CmbHlColor StyleState where
  hlColor col = def & L.hlColor ?~ col

-- Cursor

instance CmbCursorIcon StyleState where
  cursorIcon icon = def & L.cursorIcon ?~ icon

-- Text
instance CmbTextFont StyleState where
  textFont font = def & L.text ?~ textFont font

instance CmbTextSize StyleState where
  textSize size = def & L.text ?~ textSize size

instance CmbTextSpaceH StyleState where
  textSpaceH space = def & L.text ?~ textSpaceH space

instance CmbTextSpaceV StyleState where
  textSpaceV space = def & L.text ?~ textSpaceV space

instance CmbTextColor StyleState where
  textColor col = def & L.text ?~ textColor col

instance CmbTextLeft StyleState where
  textLeft_ False = def
  textLeft_ True = styleTextAlignH ATLeft

instance CmbTextCenter StyleState where
  textCenter_ False = def
  textCenter_ True = styleTextAlignH ATCenter

instance CmbTextRight StyleState where
  textRight_ False = def
  textRight_ True = styleTextAlignH ATRight

instance CmbTextTop StyleState where
  textTop_ False = def
  textTop_ True = styleTextAlignV ATTop

instance CmbTextMiddle StyleState where
  textMiddle_ False = def
  textMiddle_ True = styleTextAlignV ATMiddle

instance CmbTextAscender StyleState where
  textAscender_ False = def
  textAscender_ True = styleTextAlignV ATAscender

instance CmbTextLowerX StyleState where
  textLowerX_ False = def
  textLowerX_ True = styleTextAlignV ATLowerX

instance CmbTextBottom StyleState where
  textBottom_ False = def
  textBottom_ True = styleTextAlignV ATBottom

instance CmbTextBaseline StyleState where
  textBaseline_ False = def
  textBaseline_ True = styleTextAlignV ATBaseline

instance CmbTextUnderline StyleState where
  textUnderline_ False = def
  textUnderline_ True = def & L.text ?~ textUnderline

instance CmbTextOverline StyleState where
  textOverline_ False = def
  textOverline_ True = def & L.text ?~ textOverline

instance CmbTextThroughline StyleState where
  textThroughline_ False = def
  textThroughline_ True = def & L.text ?~ textThroughline

-- Padding
instance CmbPadding StyleState where
  padding padd = def & L.padding ?~ padding padd

instance CmbPaddingL StyleState where
  paddingL padd = def & L.padding . non def . L.left ?~ padd

instance CmbPaddingR StyleState where
  paddingR padd = def & L.padding . non def . L.right ?~ padd

instance CmbPaddingT StyleState where
  paddingT padd = def & L.padding . non def . L.top ?~ padd

instance CmbPaddingB StyleState where
  paddingB padd = def & L.padding . non def . L.bottom ?~ padd

-- Border
instance CmbBorder StyleState where
  border w col = def & L.border ?~ border w col

instance CmbBorderL StyleState where
  borderL w col = def & L.border . non def . L.left ?~ BorderSide w col

instance CmbBorderR StyleState where
  borderR w col = def & L.border . non def . L.right ?~ BorderSide w col

instance CmbBorderT StyleState where
  borderT w col = def & L.border . non def . L.top ?~ BorderSide w col

instance CmbBorderB StyleState where
  borderB w col = def & L.border . non def . L.bottom ?~ BorderSide w col

-- Radius
instance CmbRadius StyleState where
  radius rad = def & L.radius ?~ radius rad

instance CmbRadiusTL StyleState where
  radiusTL rad = def & L.radius . non def . L.topLeft ?~ radiusCorner rad

instance CmbRadiusTR StyleState where
  radiusTR rad = def & L.radius . non def . L.topRight ?~ radiusCorner rad

instance CmbRadiusBL StyleState where
  radiusBL rad = def & L.radius . non def . L.bottomLeft ?~ radiusCorner rad

instance CmbRadiusBR StyleState where
  radiusBR rad = def & L.radius . non def . L.bottomRight ?~ radiusCorner rad

-- Internal

radiusCorner :: Double -> RadiusCorner
radiusCorner rad = RadiusCorner rad

textAlignH :: AlignTH -> TextStyle
textAlignH align = def & L.alignH ?~ align

textAlignV :: AlignTV -> TextStyle
textAlignV align = def & L.alignV ?~ align

styleTextAlignH :: AlignTH -> StyleState
styleTextAlignH align = def & L.text . non def . L.alignH ?~ align

styleTextAlignV :: AlignTV -> StyleState
styleTextAlignV align = def & L.text . non def . L.alignV ?~ align