Basic visuals of multiple answer cards

2024-10-26 07:41:15 +03:00 · 2020-07-16 18:13:27 +02:00 · 2020-07-16 18:13:27 +02:00 · 4272f2ed45
commit 4272f2ed45
parent dab0919f55
3 changed files with 111 additions and 45 deletions
--- a/cards/test.txt
+++ b/cards/test.txt
@ -11,6 +11,14 @@ This is the back of the card

 ---

+# Multiple choice question, (multiple possible answers)
+[ ] Option 1
+[ ] Option 2
+[x] Option 3 (this is the correct answer)
+[ ] Option 4
+
+---
+
 # Fill in the gaps
 The symbol € is for the currency named _Euro_, and is used in the _EU_.

--- a/package.yaml
+++ b/package.yaml
@ -32,6 +32,7 @@ dependencies:
 - vector
 - filepath
 - microlens
+- process

 library:
  source-dirs: src
--- a/src/CardUI.hs
+++ b/src/CardUI.hs
@ -8,11 +8,13 @@ import Lens.Micro.Platform
 import Types
 import Data.Char (isSeparator, isSpace)
 import Data.List (dropWhileEnd)
+import Data.List.NonEmpty (NonEmpty)
 import Data.Map.Strict (Map)
 import Text.Wrap
 import Data.Text (pack)
 import Debug.Trace (trace)
 import System.IO.Unsafe (unsafePerformIO)
+import qualified Data.List.NonEmpty as NE
 import qualified Data.Text as T
 import qualified Data.Map.Strict as M
 import qualified Brick.Widgets.Border as B
@ -27,13 +29,18 @@ data CardState =
    DefinitionState
  { _flipped        :: Bool }
  | MultipleChoiceState
-  { _selected       :: Int
+  { _highlighted       :: Int
  , _nChoices       :: Int
  , _tried          :: Map Int Bool      -- indices of tried choices
  }
+  | MultipleAnswerState
+  { _highlighted    :: Int
+  , _selected       :: Map Int Bool
+  , _nChoices       :: Int
+  }
  | OpenQuestionState
  { _gapInput       :: Map Int String
-  , _selectedGap    :: Int
+  , _highlighted    :: Int
  , _nGaps          :: Int
  , _entered        :: Bool
  , _correctGaps    :: Map Int Bool
@ -45,7 +52,7 @@ data State = State
  , _nCards         :: Int        -- number of cards
  , _currentCard    :: Card
  , _cardState      :: CardState
-  , _incorrectCards :: [Int]      -- list of indices of incorrect answers
+  -- , _incorrectCards :: [Int]      -- list of indices of incorrect answers
  }

 makeLenses ''CardState
@ -54,16 +61,19 @@ makeLenses ''State
 defaultCardState :: Card -> CardState
 defaultCardState Definition{} = DefinitionState { _flipped = False }
 defaultCardState (MultipleChoice _ _ ics) = MultipleChoiceState 
-  { _selected = 0
+  { _highlighted = 0
  , _nChoices = length ics + 1
-  , _tried = M.fromList [(i, False) | i <- [0..length ics]]}
+  , _tried = M.fromList [(i, False) | i <- [0..length ics]] }
 defaultCardState (OpenQuestion _ perforated) = OpenQuestionState 
  { _gapInput = M.empty
-  , _selectedGap = 0
+  , _highlighted = 0
  , _nGaps = nGapsInPerforated perforated
  , _entered = False
  , _correctGaps = M.fromList [(i, False) | i <- [0..nGapsInPerforated perforated - 1]] }
-
+defaultCardState (MultipleAnswer question answers) = MultipleAnswerState 
+  { _highlighted = 0
+  , _selected = M.fromList [(i, False) | i <- [0..NE.length answers-1]]
+  , _nChoices = NE.length answers }

 app :: App State Event Name
 app = App 
@ -89,31 +99,33 @@ drawHeader title = withAttr titleAttr $
                   hCenteredStrWrap title

 drawDescr :: String -> Widget Name
-drawDescr descr = padLeftRight 1 $
+drawDescr descr =
  strWrapWith (WrapSettings {preserveIndentation=False, breakLongWords=True}) descr'
    where
      descr' = dropWhileEnd isSpace descr

 listMultipleChoice :: CorrectOption -> [IncorrectOption] -> [String]
 listMultipleChoice c = reverse . listMultipleChoice' [] 0 c
-  where listMultipleChoice' opts i c@(CorrectOption j cStr) [] = 
+  where listMultipleChoice' opts i (CorrectOption j cStr) [] = 
          if i == j
            then cStr : opts
            else opts
-        listMultipleChoice' opts i c@(CorrectOption j cStr) ics@(IncorrectOption icStr : ics') = 
+        listMultipleChoice' opts i c'@(CorrectOption j cStr) ics@(IncorrectOption icStr : ics') = 
          if i == j
-            then listMultipleChoice' (cStr  : opts) (i+1) c ics
-            else listMultipleChoice' (icStr : opts) (i+1) c ics'
+            then listMultipleChoice' (cStr  : opts) (i+1) c' ics
+            else listMultipleChoice' (icStr : opts) (i+1) c' ics'

 drawCardUI :: State -> Widget Name
-drawCardUI s = joinBorders $ drawCardBox $ (<=> drawProgress s) $
+drawCardUI s = let p = 1 in
+  joinBorders $ drawCardBox $ (<=> drawProgress s) $
  case (s ^. cards) !! (s ^. index) of
-    Definition title descr -> drawHeader title <=> B.hBorder <=> drawHintedDef s descr <=> str " "
+    Definition title descr -> drawHeader title <=> B.hBorder <=> padLeftRight p (drawHintedDef s descr <=> str " ")
                              
-    MultipleChoice question correct others -> drawHeader question <=> B.hBorder <=> drawOptions s (listMultipleChoice correct others)
+    MultipleChoice question correct others -> drawHeader question <=> B.hBorder <=> padLeftRight p (drawChoices s (listMultipleChoice correct others) <=> str " ")

-    OpenQuestion title perforated -> drawHeader title <=> B.hBorder <=> padLeftRight 1 (drawPerforated s perforated <=> str " ")
+    OpenQuestion title perforated -> drawHeader title <=> B.hBorder <=> padLeftRight p (drawPerforated s perforated <=> str " ")

+    MultipleAnswer question options -> drawHeader question <=> B.hBorder <=> padLeftRight p (drawOptions s options <=> str " ")

 applyWhen :: Bool -> (a -> a) -> a -> a
 applyWhen predicate action = if predicate then action else id
@ -131,9 +143,9 @@ drawDef s def = case s ^. cardState of
  DefinitionState {_flipped=f} -> if f then drawDescr def else drawDescr [if char == '\n' then char else ' ' | char <- def]
  _ -> error "impossible: " 

-drawOptions :: State -> [String] -> Widget Name
-drawOptions s options = case (s ^. cardState, s^. currentCard) of
-  (MultipleChoiceState {_selected=i, _tried=kvs}, MultipleChoice _ (CorrectOption k _) _)  -> vBox formattedOptions
+drawChoices :: State -> [String] -> Widget Name
+drawChoices s options = case (s ^. cardState, s ^. currentCard) of
+  (MultipleChoiceState {_highlighted=i, _tried=kvs}, MultipleChoice _ (CorrectOption k _) _)  -> vBox formattedOptions
                  
             where formattedOptions :: [Widget Name]
                   formattedOptions = [ coloring $ drawDescr (if i==j then "* " ++ opt else opt) |
@ -141,10 +153,23 @@ drawOptions s options = case (s ^. cardState, s^. currentCard) of
                                        let chosen = M.findWithDefault False j kvs 
                                            coloring = case (chosen, j==k) of
                                              (False, _)    -> id
-                                              (True, False) -> withAttr incorrectOptAttr
-                                              (True, True)  -> withAttr correctOptAttr
+                                              (True, False) -> withAttr incorrectChoiceAttr
+                                              (True, True)  -> withAttr correctChoiceAttr
                                          ]
-  _                                  -> error "impossible"
+  _ -> error "impossible"
+
+drawOptions :: State -> NonEmpty Option -> Widget Name
+drawOptions s = case (s ^. cardState, s ^. currentCard) of
+  (MultipleAnswerState {_highlighted=j, _selected=kvs}, _) -> 
+    vBox . NE.toList .  NE.map drawOption . (`NE.zip` NE.fromList [0..])
+      where drawOption (Option _ text, i) = coloring (str "[") <+> coloring (highlighting (str symbol)) <+> coloring (str "] ") <+> drawDescr text
+                where symbol = if i == j || xxx then "*" else " "
+                      xxx = M.findWithDefault False i kvs
+                      highlighting = if i == j then withAttr highlightedOptAttr else id
+                      coloring = if xxx then withAttr selectedOptAttr else id
+  
+  _ -> error "hopefully this is never shown"
+

 drawPerforated :: State -> Perforated -> Widget Name
 drawPerforated s p = drawSentence s $ perforatedToSentence p
@ -161,7 +186,7 @@ makeSentenceWidget w state = vBox . fst . makeSentenceWidget' 0 0
    makeSentenceWidget' :: Int -> Int -> Sentence -> ([Widget Name], Bool)
    makeSentenceWidget' padding _ (Normal s) = let (ws, _, fit) = wrapStringWithPadding padding w s in (ws, fit) 
    makeSentenceWidget' padding i (Perforated pre gapSolution post) = case state ^. cardState of
-      OpenQuestionState {_gapInput = kvs, _selectedGap=j, _entered=submitted, _correctGaps=cgs} ->
+      OpenQuestionState {_gapInput = kvs, _highlighted=j, _entered=submitted, _correctGaps=cgs} ->
        let (ws, n, fit') = wrapStringWithPadding padding w pre
            gap = M.findWithDefault "" i kvs
            n' =  w - n - length gap 
@ -229,7 +254,15 @@ handleEvent s (VtyEvent ev) = case ev of
  -- V.EvKey (V.KChar ' ') []         -> next s

  ev -> case (s ^. cardState, s ^. currentCard) of
-    (MultipleChoiceState {_selected = i, _nChoices = nChoices, _tried = kvs}, MultipleChoice _ (CorrectOption j _) _) ->
+    (DefinitionState{_flipped = f}, _) ->
+      case ev of
+        V.EvKey V.KEnter [] -> 
+          if f
+            then next s 
+            else continue $ s & cardState.flipped %~ not
+        _ -> continue s
+
+    (MultipleChoiceState {_highlighted = i, _nChoices = nChoices, _tried = kvs}, MultipleChoice _ (CorrectOption j _) _) ->
      case ev of
        V.EvKey V.KUp [] -> continue up
        V.EvKey (V.KChar 'k') [] -> continue up
@ -246,36 +279,52 @@ handleEvent s (VtyEvent ev) = case ev of
      where frozen = M.findWithDefault False j kvs
        
            down = if i < nChoices - 1 && not frozen
-                     then s & (cardState.selected) +~ 1
+                     then s & (cardState.highlighted) +~ 1
                     else s

            up = if i > 0 && not frozen
-                   then s & (cardState.selected) -~ 1
+                   then s & (cardState.highlighted) -~ 1
+                   else s
+    
+    (MultipleAnswerState {_highlighted = i, _nChoices = nChoices}, MultipleAnswer question options) ->
+      case ev of
+        V.EvKey V.KUp [] -> continue up
+        V.EvKey (V.KChar 'k') [] -> continue up
+        V.EvKey V.KDown [] -> continue down 
+        V.EvKey (V.KChar 'j') [] -> continue down
+
+        V.EvKey V.KEnter [] ->
+            if frozen
+              then next s
+              else continue $ s & cardState.selected %~ M.adjust not i
+
+        _ -> continue s
+
+      where frozen = False
+        
+            down = if i < nChoices - 1 && not frozen
+                     then s & (cardState.highlighted) +~ 1
+                     else s
+
+            up = if i > 0 && not frozen
+                   then s & (cardState.highlighted) -~ 1
                   else s

-    (DefinitionState{_flipped = f}, _) ->
-      case ev of
-        V.EvKey V.KEnter [] -> 
-          if f
-            then next s 
-            else continue $ s & cardState.flipped %~ not
-        _ -> continue s
-    
-    (OpenQuestionState {_selectedGap = i, _nGaps = n, _gapInput = kvs, _correctGaps = cGaps}, OpenQuestion _ perforated) ->
+    (OpenQuestionState {_highlighted = i, _nGaps = n, _gapInput = kvs, _correctGaps = cGaps}, OpenQuestion _ perforated) ->
      case ev of
        V.EvKey (V.KChar '\t') [] -> continue $ 
          if i < n - 1
-            then s & (cardState.selectedGap) +~ 1
-            else s & (cardState.selectedGap) .~ 0
+            then s & (cardState.highlighted) +~ 1
+            else s & (cardState.highlighted) .~ 0
        
        V.EvKey V.KRight [] -> continue $ 
          if i < n - 1
-            then s & (cardState.selectedGap) +~ 1
+            then s & (cardState.highlighted) +~ 1
            else s

        V.EvKey V.KLeft [] -> continue $ 
          if i > 0
-            then s & (cardState.selectedGap) -~ 1
+            then s & (cardState.highlighted) -~ 1
            else s

        V.EvKey (V.KChar c) [] -> continue $
@ -306,11 +355,17 @@ titleAttr = attrName "title"
 textboxAttr :: AttrName
 textboxAttr = attrName "textbox"

-incorrectOptAttr :: AttrName
-incorrectOptAttr = attrName "incorrect option"
+incorrectChoiceAttr :: AttrName
+incorrectChoiceAttr = attrName "incorrect choice"

-correctOptAttr :: AttrName
-correctOptAttr = attrName "correct option"
+correctChoiceAttr :: AttrName
+correctChoiceAttr = attrName "correct choice"
+
+highlightedOptAttr :: AttrName
+highlightedOptAttr = attrName "highlighted option"
+
+selectedOptAttr :: AttrName
+selectedOptAttr = attrName "selected option"

 hiddenAttr :: AttrName
 hiddenAttr = attrName "hidden"
@ -328,10 +383,12 @@ theMap :: AttrMap
 theMap = attrMap V.defAttr
  [ (titleAttr, fg V.yellow)
  , (textboxAttr, V.defAttr)
-  , (incorrectOptAttr, fg V.red)
-  , (correctOptAttr, fg V.green)
+  , (incorrectChoiceAttr, fg V.red)
+  , (correctChoiceAttr, fg V.green)
  , (incorrectGapAttr, fg V.red `V.withStyle` V.underline)
  , (correctGapAttr, fg V.green `V.withStyle` V.underline)
+  , (highlightedOptAttr, fg V.yellow)
+  , (selectedOptAttr, fg V.blue)
  , (hiddenAttr, fg V.black)
  , (gapAttr, V.defAttr `V.withStyle` V.underline)
  ]