Files
loop/src/Dodge/SelectionSections.hs
T

214 lines
7.0 KiB
Haskell

module Dodge.SelectionSections (
scrollSelectionSections,
nextInSectionSS,
ssLookupDown,
ssSetCursor,
selSecYint,
selSecSelSize,
inverseSelSecYint,
posSelSecYint,
inverseSelNumPos,
) where
import Control.Applicative
import qualified Control.Foldl as L
import Control.Lens
import Control.Monad
import Data.Foldable
import qualified Data.IntMap.Strict as IM
import qualified Data.IntSet as IS
import Data.Maybe
import Dodge.Data.CardinalPoint
import Dodge.Data.Config
import Dodge.Data.HUD
import Dodge.Data.SelectionList
import Dodge.ScreenPos
import Geometry.Data
scrollSelectionSections :: Int -> IMSS a -> Maybe Selection -> Maybe Selection
scrollSelectionSections yi sss msel
| yi == 0 = msel
| yi > 0 = foldl' (&) msel $ replicate yi (ssScrollUsing ssLookupUp sss)
| otherwise = foldl' (&) msel $ replicate (negate yi) (ssScrollUsing ssLookupDown sss)
nextInSectionSS :: IMSS a -> Maybe Selection -> Maybe Selection
nextInSectionSS = ssScrollUsing ssLookupNextMax
ssScrollUsing ::
(Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)) ->
IMSS a ->
Maybe Selection ->
Maybe Selection
ssScrollUsing g = ssScrollMinOnFail g . fmap (ssItems %~ IM.filter _siIsSelectable)
--
ssScrollMinOnFail ::
(Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)) ->
IMSS a ->
Maybe Selection ->
Maybe Selection
ssScrollMinOnFail f sss msel = fmap (\(i, j, _) -> Sel i j q) $ l <|> ssLookupMin sss
where
q = fold (msel ^? _Just . slSet)
l = do
Sel i j _ <- msel
f i j sss
---- this version removes the selected set when scrolling outside it
--ssScrollMinOnFail' ::
-- (Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)) ->
-- IMSS a ->
-- Maybe Selection ->
-- Maybe Selection
--ssScrollMinOnFail' f sss msel = fmap (\(i, j, _) -> Sel i j (q i j)) $ l <|> ssLookupMin sss
-- where
-- q i j = fromMaybe mempty $ do
-- Sel k _ xs <- msel ^? _Just
-- guard $ j `IS.member` xs && i == k
-- return xs
-- l = do
-- Sel i j _ <- msel
-- f i j sss
ssSetCursor ::
(IMSS a -> Maybe (Int, Int, SelectionItem a)) ->
IMSS a ->
Maybe Selection ->
Maybe Selection
ssSetCursor f sss msel = fromMaybe msel $ do
(i, j, _) <- f sss
let newxs = fromMaybe mempty $ do
Sel k _ xs <- msel
guard $ k == i && j `IS.member` xs
return xs
return $ Just (Sel i j newxs)
ssLookupMax :: IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupMax sss = do
(i, _) <- IM.lookupMax sss
ssLookupLE' i sss
ssLookupUp :: Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupUp i j sss = case ssLookupLT i j sss of
Nothing -> ssLookupMax sss
x -> x
ssLookupDown :: Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupDown i j sss = case ssLookupGT i j sss of
Nothing -> ssLookupMin sss
x -> x
ssLookupNextMax :: Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupNextMax i j sss = case ssLookupGT i j sss of
Just x@(i', j', _) | i' == i && j' > j -> Just x
_ -> ssLookupMaxInSection i sss <|> ssLookupDown i j sss
ssLookupMaxInSection :: Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupMaxInSection i sss = do
ss <- sss ^? ix i . ssItems
(j, s) <- IM.lookupMax ss
return (i, j, s)
ssLookupLT :: Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupLT i j sss = fromMaybe (ssLookupLT' i sss) $ do
ss <- sss ^? ix i
(j', si) <- IM.lookupLT j (ss ^. ssItems)
return $ Just (i, j', si)
ssLookupLT' :: Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupLT' i sss = do
(i', ss) <- IM.lookupLT i sss
case IM.lookupMax (ss ^. ssItems) of
Just (j', si) -> return (i', j', si)
Nothing -> ssLookupLT' i' sss
ssLookupLE' :: Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupLE' i sss = do
(i', ss) <- IM.lookupLE i sss
case IM.lookupMax (ss ^. ssItems) of
Just (j', si) -> return (i', j', si)
Nothing -> ssLookupLT' i' sss
ssLookupMin :: IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupMin sss = do
(i, _) <- IM.lookupMin sss
ssLookupGE' i sss
ssLookupGT :: Int -> Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupGT i j sss = fromMaybe (ssLookupGT' i sss) $ do
ss <- sss ^? ix i
(j', si) <- IM.lookupGT j (ss ^. ssItems)
return $ Just (i, j', si)
ssLookupGT' :: Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupGT' i sss = do
(i', ss) <- IM.lookupGT i sss
case IM.lookupMin (ss ^. ssItems) of
Just (j', si) -> return (i', j', si)
Nothing -> ssLookupGT' i' sss
ssLookupGE' :: Int -> IMSS a -> Maybe (Int, Int, SelectionItem a)
ssLookupGE' i sss = do
(i', ss) <- IM.lookupGE i sss
case IM.lookupMin (ss ^. ssItems) of
Just (j', si) -> return (i', j', si)
Nothing -> ssLookupGT' i' sss
selSecSelSize :: Int -> Int -> IMSS a -> Maybe Int
selSecSelSize i j = (^? ix i . ssItems . ix j . siHeight)
-- need to check that the vertical gap is correctly put in here
posSelSecYint :: Config -> LDParams -> Float -> Int
posSelSecYint cfig ldp y = floor $ (y0 - y) / (20 / ldp ^. ldpScale + ldp ^. ldpVerticalGap)
where
V2 _ y0 = screenPosAbs cfig (ldp ^. ldpPos)
selSecYint :: Int -> Int -> IMSS a -> Maybe Int
selSecYint i j sss = do
ss <- sss ^? ix i
return
. (secpos +)
. subtract (ss ^. ssOffset)
. sum
. fmap _siHeight
. fst
$ IM.split j (ss ^. ssItems)
where
secpos = sum . fmap _ssShownLength . fst $ IM.split i sss
inverseSelSecYint :: Int -> IMSS a -> XInfinity (Int, Int)
inverseSelSecYint yint sss
| yint < 0 = NegInf
| otherwise = fromMaybe PosInf $ do
((i, ss), othersss) <- IM.minViewWithKey sss
let l = _ssShownLength ss
if l <= yint
then return $ inverseSelSecYint (yint - l) othersss
else do
let ls = L.postscan (L.premap _siHeight L.sum) (_ssItems ss)
(j, _) <- L.fold (L.find (\(_, x) -> x - _ssOffset ss > yint)) $ IM.toList ls
return $ NonInf (i, j)
inverseSelSecYintXPosCheck ::
Config -> LDParams -> Float -> Int -> IMSS a -> Maybe (XInfinity (Int, Int))
inverseSelSecYintXPosCheck cfig ldp x yint sss = do
let sel = inverseSelSecYint yint sss
(i,j) <- case sel of
NonInf v -> Just v
NegInf -> do
(i',j',_) <- ssLookupMin sss
return (i',j')
PosInf -> do
(i',j',_) <- ssLookupMax sss
return (i',j')
let V2 x0 _ = screenPosAbs cfig (ldp ^. ldpPos)
sindent <- sss ^? ix i . ssIndent
itindent <- sss ^? ix i . ssItems . ix j . siOffX
let x1 = x0 + _ldpScale ldp * 10 * (fromIntegral (sindent + itindent) - 0.5)
guard $ x - x1 < 160 && x > x1
return sel
inverseSelNumPos :: Config -> LDParams -> Point2 -> IMSS a -> Maybe (XInfinity (Int, Int))
inverseSelNumPos cfig ldp (V2 x y) =
inverseSelSecYintXPosCheck cfig ldp x (posSelSecYint cfig ldp y)