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|
{-# LANGUAGE DeriveGeneric #-}
-- | Frontend-independent keyboard input operations.
module Game.LambdaHack.Client.UI.Key
( Key(..), Modifier(..), KM(..), KMP(..)
, showKey, showKM
, escKM, controlEscKM, spaceKM, safeSpaceKM, undefinedKM, returnKM
, pgupKM, pgdnKM, wheelNorthKM, wheelSouthKM
, upKM, downKM, leftKM, rightKM
, homeKM, endKM, backspaceKM, controlP
, leftButtonReleaseKM, middleButtonReleaseKM, rightButtonReleaseKM
, cardinalAllKM, dirAllKey, handleCardinal, handleDir, moveBinding
, mkKM, mkChar, keyTranslate, keyTranslateWeb
, dirMoveNoModifier, dirRunNoModifier, dirRunControl, dirRunShift
#ifdef EXPOSE_INTERNAL
-- * Internal operations
, dirKeypadKey, dirKeypadShiftChar, dirKeypadShiftKey
, dirLeftHandKey, dirLeftHandShiftKey
, dirViChar, dirViKey, dirViShiftKey
#endif
) where
import Prelude ()
import Game.LambdaHack.Core.Prelude hiding (Left, Right)
import Control.DeepSeq
import Data.Binary
import qualified Data.Char as Char
import GHC.Generics (Generic)
import Game.LambdaHack.Client.UI.PointUI
import Game.LambdaHack.Common.Vector
-- | Frontend-independent datatype to represent keys.
data Key =
Esc
| Return
| Space
| Tab
| BackTab
| BackSpace
| PgUp
| PgDn
| Left
| Right
| Up
| Down
| End
| Begin
| Insert
| Delete
| PrintScreen
| Home
| KP Char -- ^ a keypad key for a character (digits and operators)
| Char Char -- ^ a single printable character
| Fun Int -- ^ function key
| LeftButtonPress -- ^ left mouse button pressed
| MiddleButtonPress -- ^ middle mouse button pressed
| RightButtonPress -- ^ right mouse button pressed
| LeftButtonRelease -- ^ left mouse button released
| MiddleButtonRelease -- ^ middle mouse button released
| RightButtonRelease -- ^ right mouse button released
| WheelNorth -- ^ mouse wheel rotated north
| WheelSouth -- ^ mouse wheel rotated south
| Unknown String -- ^ an unknown key, registered to warn the user
| DeadKey
deriving (Ord, Eq, Generic)
instance Binary Key
instance NFData Key
-- | Our own encoding of modifiers.
data Modifier =
NoModifier
| ControlShift
| AltShift
| Shift
| Control
| Alt
deriving (Show, Ord, Eq, Generic)
instance Binary Modifier
instance NFData Modifier
-- | Key and modifier.
data KM = KM { modifier :: Modifier
, key :: Key }
deriving (Ord, Eq, Generic)
instance Binary KM
instance NFData KM
instance Show KM where
show = showKM
-- | Key, modifier and position of mouse pointer.
data KMP = KMP { kmpKeyMod :: KM
, kmpPointer :: PointUI }
-- | Common and terse names for keys.
showKey :: Key -> String
showKey Esc = "ESC"
showKey Return = "RET"
showKey Space = "SPACE"
showKey Tab = "TAB"
showKey BackTab = "S-TAB"
showKey BackSpace = "BACKSPACE"
showKey Up = "UP"
showKey Down = "DOWN"
showKey Left = "LEFT"
showKey Right = "RIGHT"
showKey Home = "HOME"
showKey End = "END"
showKey PgUp = "PGUP"
showKey PgDn = "PGDN"
showKey Begin = "BEGIN"
showKey Insert = "INS"
showKey Delete = "DEL"
showKey PrintScreen = "PRTSCR"
showKey (KP c) = "KP_" ++ [c]
showKey (Char c) = [c]
showKey (Fun n) = "F" ++ show n
showKey LeftButtonPress = "LMB-PRESS"
showKey MiddleButtonPress = "MMB-PRESS"
showKey RightButtonPress = "RMB-PRESS"
showKey LeftButtonRelease = "LMB"
showKey MiddleButtonRelease = "MMB"
showKey RightButtonRelease = "RMB"
showKey WheelNorth = "WHEEL-UP"
showKey WheelSouth = "WHEEL-DN"
showKey (Unknown s) = s
showKey DeadKey = "DEADKEY"
-- | Show a key with a modifier, if any.
showKM :: KM -> String
showKM KM{modifier=NoModifier, key} = showKey key
showKM KM{modifier=ControlShift, key} = "C-S-" ++ showKey key
showKM KM{modifier=AltShift, key} = "A-S-" ++ showKey key
showKM KM{modifier=Shift, key} = "S-" ++ showKey key
showKM KM{modifier=Control, key} = "C-" ++ showKey key
showKM KM{modifier=Alt, key} = "A-" ++ showKey key
escKM :: KM
escKM = KM NoModifier Esc
controlEscKM :: KM
controlEscKM = KM Control Esc
spaceKM :: KM
spaceKM = KM NoModifier Space
safeSpaceKM :: KM
safeSpaceKM = KM NoModifier $ Unknown "SAFE_SPACE"
undefinedKM :: KM
undefinedKM = KM NoModifier $ Unknown "UNDEFINED KEY"
returnKM :: KM
returnKM = KM NoModifier Return
pgupKM :: KM
pgupKM = KM NoModifier PgUp
pgdnKM :: KM
pgdnKM = KM NoModifier PgDn
wheelNorthKM :: KM
wheelNorthKM = KM NoModifier WheelNorth
wheelSouthKM :: KM
wheelSouthKM = KM NoModifier WheelSouth
upKM :: KM
upKM = KM NoModifier Up
downKM :: KM
downKM = KM NoModifier Down
leftKM :: KM
leftKM = KM NoModifier Left
rightKM :: KM
rightKM = KM NoModifier Right
homeKM :: KM
homeKM = KM NoModifier Home
endKM :: KM
endKM = KM NoModifier End
backspaceKM :: KM
backspaceKM = KM NoModifier BackSpace
controlP :: KM
controlP = KM Control (Char 'P')
leftButtonReleaseKM :: KM
leftButtonReleaseKM = KM NoModifier LeftButtonRelease
middleButtonReleaseKM :: KM
middleButtonReleaseKM = KM NoModifier MiddleButtonRelease
rightButtonReleaseKM :: KM
rightButtonReleaseKM = KM NoModifier RightButtonRelease
cardinalKeypadKM :: [KM]
cardinalKeypadKM = map (KM NoModifier) [Up, Right, Down, Left]
dirKeypadKey :: [Key]
dirKeypadKey = [Home, Up, PgUp, Right, PgDn, Down, End, Left]
dirKeypadShiftChar :: [Char]
dirKeypadShiftChar = ['7', '8', '9', '6', '3', '2', '1', '4']
dirKeypadShiftKey :: [Key]
dirKeypadShiftKey = map KP dirKeypadShiftChar
cardinalLeftHandKM :: [KM]
cardinalLeftHandKM = map (KM NoModifier . Char) ['w', 'd', 'x', 'a']
dirLeftHandKey :: [Key]
dirLeftHandKey = map Char ['q', 'w', 'e', 'd', 'c', 'x', 'z', 'a']
dirLeftHandShiftKey :: [Key]
dirLeftHandShiftKey = map Char ['Q', 'W', 'E', 'D', 'C', 'X', 'Z', 'A']
cardinalViKM :: [KM]
cardinalViKM = map (KM NoModifier . Char) ['k', 'l', 'j', 'h']
dirViChar :: [Char]
dirViChar = ['y', 'k', 'u', 'l', 'n', 'j', 'b', 'h']
dirViKey :: [Key]
dirViKey = map Char dirViChar
dirViShiftKey :: [Key]
dirViShiftKey = map (Char . Char.toUpper) dirViChar
dirMoveNoModifier :: Bool -> Bool -> [Key]
dirMoveNoModifier uVi uLeftHand =
dirKeypadKey ++ (if uVi then dirViKey else [])
++ (if uLeftHand then dirLeftHandKey else [])
dirRunNoModifier :: Bool -> Bool -> [Key]
dirRunNoModifier uVi uLeftHand =
dirKeypadShiftKey ++ (if uVi then dirViShiftKey else [])
++ (if uLeftHand then dirLeftHandShiftKey else [])
dirRunControl :: [Key]
dirRunControl = dirKeypadKey
++ dirKeypadShiftKey
++ map Char dirKeypadShiftChar
dirRunShift :: [Key]
dirRunShift = dirRunControl
cardinalAllKM :: Bool -> Bool -> [KM]
cardinalAllKM uVi uLeftHand = concat $
[cardinalKeypadKM]
++ [cardinalViKM | uVi]
++ [cardinalLeftHandKM | uLeftHand]
dirAllKey :: Bool -> Bool -> [Key]
dirAllKey uVi uLeftHand =
dirMoveNoModifier uVi uLeftHand
++ dirRunNoModifier uVi uLeftHand
++ dirRunControl
handleCardinal :: [KM] -> KM -> Maybe Vector
handleCardinal dirKeys key =
let assocs = zip dirKeys $ cycle movesCardinal
in lookup key assocs
-- | Configurable event handler for the direction keys.
-- Used for directed commands such as close door.
handleDir :: [Key] -> KM -> Maybe Vector
handleDir dirKeys KM{modifier=NoModifier, key} =
let assocs = zip dirKeys $ cycle moves
in lookup key assocs
handleDir _ _ = Nothing
-- | Binding of both sets of movement keys, vi and laptop.
moveBinding :: Bool -> Bool -> (Vector -> a) -> (Vector -> a)
-> [(KM, a)]
moveBinding uVi uLeftHand move run =
let assign f km dir = (km, f dir)
mapMove modifier keys =
zipWith (assign move) (map (KM modifier) keys) (cycle moves)
mapRun modifier keys =
zipWith (assign run) (map (KM modifier) keys) (cycle moves)
in mapMove NoModifier (dirMoveNoModifier uVi uLeftHand)
++ mapRun NoModifier (dirRunNoModifier uVi uLeftHand)
++ mapRun Control dirRunControl
++ mapRun Shift dirRunShift
mkKM :: String -> KM
mkKM s = let mkKey sk =
case keyTranslate sk of
Unknown _ -> error $ "unknown key" `showFailure` s
key -> key
in case s of
'C':'-':'S':'-':rest -> KM ControlShift (mkKey rest)
'S':'-':'C':'-':rest -> KM ControlShift (mkKey rest)
'A':'-':'S':'-':rest -> KM AltShift (mkKey rest)
'S':'-':'A':'-':rest -> KM AltShift (mkKey rest)
'S':'-':rest -> KM Shift (mkKey rest)
'C':'-':rest -> KM Control (mkKey rest)
'A':'-':rest -> KM Alt (mkKey rest)
_ -> KM NoModifier (mkKey s)
mkChar :: Char -> KM
mkChar c = KM NoModifier $ Char c
-- | Translate key from a GTK string description to our internal key type.
-- To be used, in particular, for the command bindings and macros
-- in the config file.
--
-- See <https://github.com/twobob/gtk-/blob/master/gdk/keynames.txt>
keyTranslate :: String -> Key
keyTranslate "less" = Char '<'
keyTranslate "greater" = Char '>'
keyTranslate "period" = Char '.'
keyTranslate "colon" = Char ':'
keyTranslate "semicolon" = Char ';'
keyTranslate "comma" = Char ','
keyTranslate "question" = Char '?'
keyTranslate "numbersign" = Char '#'
keyTranslate "dollar" = Char '$'
keyTranslate "parenleft" = Char '('
keyTranslate "parenright" = Char ')'
keyTranslate "asterisk" = Char '*' -- KP and normal are merged here
keyTranslate "KP_Multiply" = Char '*'
keyTranslate "slash" = Char '/'
keyTranslate "KP_Divide" = Char '/'
keyTranslate "bar" = Char '|'
keyTranslate "backslash" = Char '\\'
keyTranslate "asciicircum" = Char '^'
keyTranslate "underscore" = Char '_'
keyTranslate "minus" = Char '-'
keyTranslate "KP_Subtract" = Char '-' -- KP and normal are merged here
keyTranslate "plus" = Char '+'
keyTranslate "KP_Add" = Char '+' -- KP and normal are merged here
keyTranslate "equal" = Char '='
keyTranslate "bracketleft" = Char '['
keyTranslate "bracketright" = Char ']'
keyTranslate "braceleft" = Char '{'
keyTranslate "braceright" = Char '}'
keyTranslate "caret" = Char '^'
keyTranslate "ampersand" = Char '&'
keyTranslate "at" = Char '@'
keyTranslate "asciitilde" = Char '~'
keyTranslate "grave" = Char '`'
keyTranslate "exclam" = Char '!'
keyTranslate "apostrophe" = Char '\''
keyTranslate "quotedbl" = Char '"'
keyTranslate "Escape" = Esc
keyTranslate "ESC" = Esc
keyTranslate "Return" = Return
keyTranslate "RET" = Return
keyTranslate "space" = Space
keyTranslate "SPACE" = Space
keyTranslate "Tab" = Tab
keyTranslate "TAB" = Tab
keyTranslate "BackTab" = BackTab
keyTranslate "ISO_Left_Tab" = BackTab
keyTranslate "BackSpace" = BackSpace
keyTranslate "BACKSPACE" = BackSpace
keyTranslate "Up" = Up
keyTranslate "UP" = Up
keyTranslate "KP_Up" = Up
keyTranslate "Down" = Down
keyTranslate "DOWN" = Down
keyTranslate "KP_Down" = Down
keyTranslate "Left" = Left
keyTranslate "LEFT" = Left
keyTranslate "KP_Left" = Left
keyTranslate "Right" = Right
keyTranslate "RIGHT" = Right
keyTranslate "KP_Right" = Right
keyTranslate "Home" = Home
keyTranslate "HOME" = Home
keyTranslate "KP_Home" = Home
keyTranslate "End" = End
keyTranslate "END" = End
keyTranslate "KP_End" = End
keyTranslate "Page_Up" = PgUp
keyTranslate "PGUP" = PgUp
keyTranslate "KP_Page_Up" = PgUp
keyTranslate "Prior" = PgUp
keyTranslate "KP_Prior" = PgUp
keyTranslate "Page_Down" = PgDn
keyTranslate "PGDN" = PgDn
keyTranslate "KP_Page_Down" = PgDn
keyTranslate "Next" = PgDn
keyTranslate "KP_Next" = PgDn
keyTranslate "Begin" = Begin
keyTranslate "BEGIN" = Begin
keyTranslate "KP_Begin" = Begin
keyTranslate "Clear" = Begin
keyTranslate "KP_Clear" = Begin
keyTranslate "Center" = Begin
keyTranslate "KP_Center" = Begin
keyTranslate "Insert" = Insert
keyTranslate "INS" = Insert
keyTranslate "KP_Insert" = Insert
keyTranslate "Delete" = Delete
keyTranslate "DEL" = Delete
keyTranslate "KP_Delete" = Delete
keyTranslate "KP_Enter" = Return
keyTranslate "F1" = Fun 1
keyTranslate "F2" = Fun 2
keyTranslate "F3" = Fun 3
keyTranslate "F4" = Fun 4
keyTranslate "F5" = Fun 5
keyTranslate "F6" = Fun 6
keyTranslate "F7" = Fun 7
keyTranslate "F8" = Fun 8
keyTranslate "F9" = Fun 9
keyTranslate "F10" = Fun 10
keyTranslate "F11" = Fun 11
keyTranslate "F12" = Fun 12
keyTranslate "LeftButtonPress" = LeftButtonPress
keyTranslate "LMB-PRESS" = LeftButtonPress
keyTranslate "MiddleButtonPress" = MiddleButtonPress
keyTranslate "MMB-PRESS" = MiddleButtonPress
keyTranslate "RightButtonPress" = RightButtonPress
keyTranslate "RMB-PRESS" = RightButtonPress
keyTranslate "LeftButtonRelease" = LeftButtonRelease
keyTranslate "LMB" = LeftButtonRelease
keyTranslate "MiddleButtonRelease" = MiddleButtonRelease
keyTranslate "MMB" = MiddleButtonRelease
keyTranslate "RightButtonRelease" = RightButtonRelease
keyTranslate "RMB" = RightButtonRelease
keyTranslate "WheelNorth" = WheelNorth
keyTranslate "WHEEL-UP" = WheelNorth
keyTranslate "WheelSouth" = WheelSouth
keyTranslate "WHEEL-DN" = WheelSouth
-- dead keys
keyTranslate "Shift_L" = DeadKey
keyTranslate "Shift_R" = DeadKey
keyTranslate "Control_L" = DeadKey
keyTranslate "Control_R" = DeadKey
keyTranslate "Super_L" = DeadKey
keyTranslate "Super_R" = DeadKey
keyTranslate "Menu" = DeadKey
keyTranslate "Alt_L" = DeadKey
keyTranslate "Alt_R" = DeadKey
keyTranslate "Meta_L" = DeadKey
keyTranslate "Meta_R" = DeadKey
keyTranslate "ISO_Level2_Shift" = DeadKey
keyTranslate "ISO_Level3_Shift" = DeadKey
keyTranslate "ISO_Level2_Latch" = DeadKey
keyTranslate "ISO_Level3_Latch" = DeadKey
keyTranslate "Num_Lock" = DeadKey
keyTranslate "NumLock" = DeadKey
keyTranslate "Caps_Lock" = DeadKey
keyTranslate "CapsLock" = DeadKey
keyTranslate "VoidSymbol" = DeadKey
-- numeric keypad
keyTranslate ['K','P','_',c] = KP c
-- standard characters
keyTranslate [c] = Char c
keyTranslate s = Unknown s
-- | Translate key from a Web API string description
-- (<https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key#Key_values>)
-- to our internal key type. To be used in web frontends.
-- The argument says whether Shift is pressed.
keyTranslateWeb :: String -> Bool -> Key
keyTranslateWeb "1" True = KP '1'
keyTranslateWeb "2" True = KP '2'
keyTranslateWeb "3" True = KP '3'
keyTranslateWeb "4" True = KP '4'
keyTranslateWeb "5" True = KP '5'
keyTranslateWeb "6" True = KP '6'
keyTranslateWeb "7" True = KP '7'
keyTranslateWeb "8" True = KP '8'
keyTranslateWeb "9" True = KP '9'
keyTranslateWeb "End" True = KP '1'
keyTranslateWeb "ArrowDown" True = KP '2'
keyTranslateWeb "PageDown" True = KP '3'
keyTranslateWeb "ArrowLeft" True = KP '4'
keyTranslateWeb "Begin" True = KP '5'
keyTranslateWeb "Clear" True = KP '5'
keyTranslateWeb "ArrowRight" True = KP '6'
keyTranslateWeb "Home" True = KP '7'
keyTranslateWeb "ArrowUp" True = KP '8'
keyTranslateWeb "PageUp" True = KP '9'
keyTranslateWeb "Backspace" _ = BackSpace
keyTranslateWeb "Tab" True = BackTab
keyTranslateWeb "Tab" False = Tab
keyTranslateWeb "BackTab" _ = BackTab
keyTranslateWeb "Begin" _ = Begin
keyTranslateWeb "Clear" _ = Begin
keyTranslateWeb "Enter" _ = Return
keyTranslateWeb "Esc" _ = Esc
keyTranslateWeb "Escape" _ = Esc
keyTranslateWeb "Del" _ = Delete
keyTranslateWeb "Delete" _ = Delete
keyTranslateWeb "Home" _ = Home
keyTranslateWeb "Up" _ = Up
keyTranslateWeb "ArrowUp" _ = Up
keyTranslateWeb "Down" _ = Down
keyTranslateWeb "ArrowDown" _ = Down
keyTranslateWeb "Left" _ = Left
keyTranslateWeb "ArrowLeft" _ = Left
keyTranslateWeb "Right" _ = Right
keyTranslateWeb "ArrowRight" _ = Right
keyTranslateWeb "PageUp" _ = PgUp
keyTranslateWeb "PageDown" _ = PgDn
keyTranslateWeb "End" _ = End
keyTranslateWeb "Insert" _ = Insert
keyTranslateWeb "space" _ = Space
keyTranslateWeb "Equals" _ = Char '='
keyTranslateWeb "Multiply" _ = Char '*' -- KP and normal are merged here
keyTranslateWeb "*" _ = Char '*'
keyTranslateWeb "Add" _ = Char '+' -- KP and normal are merged here
keyTranslateWeb "Subtract" _ = Char '-' -- KP and normal are merged here
keyTranslateWeb "Divide" True = Char '?'
keyTranslateWeb "Divide" False = Char '/' -- KP and normal are merged here
keyTranslateWeb "/" True = Char '?'
keyTranslateWeb "/" False = Char '/' -- KP and normal are merged here
keyTranslateWeb "Decimal" _ = Char '.' -- dot and comma are merged here
keyTranslateWeb "Separator" _ = Char '.' -- to sidestep national standards
keyTranslateWeb "F1" _ = Fun 1
keyTranslateWeb "F2" _ = Fun 2
keyTranslateWeb "F3" _ = Fun 3
keyTranslateWeb "F4" _ = Fun 4
keyTranslateWeb "F5" _ = Fun 5
keyTranslateWeb "F6" _ = Fun 6
keyTranslateWeb "F7" _ = Fun 7
keyTranslateWeb "F8" _ = Fun 8
keyTranslateWeb "F9" _ = Fun 9
keyTranslateWeb "F10" _ = Fun 10
keyTranslateWeb "F11" _ = Fun 11
keyTranslateWeb "F12" _ = Fun 12
-- dead keys
keyTranslateWeb "Dead" _ = DeadKey
keyTranslateWeb "Shift" _ = DeadKey
keyTranslateWeb "Control" _ = DeadKey
keyTranslateWeb "Meta" _ = DeadKey
keyTranslateWeb "Menu" _ = DeadKey
keyTranslateWeb "ContextMenu" _ = DeadKey
keyTranslateWeb "Alt" _ = DeadKey
keyTranslateWeb "AltGraph" _ = DeadKey
keyTranslateWeb "Num_Lock" _ = DeadKey
keyTranslateWeb "NumLock" _ = DeadKey
keyTranslateWeb "Caps_Lock" _ = DeadKey
keyTranslateWeb "CapsLock" _ = DeadKey
keyTranslateWeb "Win" _ = DeadKey
-- browser quirks
keyTranslateWeb "Unidentified" _ = Begin -- hack for Firefox
keyTranslateWeb ['\ESC'] _ = Esc
keyTranslateWeb [' '] _ = Space
keyTranslateWeb ['\n'] _ = Return
keyTranslateWeb ['\r'] _ = DeadKey
keyTranslateWeb ['\t'] _ = Tab
-- standard characters
keyTranslateWeb [c] _ = Char c
keyTranslateWeb s _ = Unknown s
|
