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updated documentation of Operations.

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Added missing documentation for type alias `D`.

Moved misplaced documentation.

Edited to a consistent style that will play well with Haddock.
This commit is contained in:
Keith 2021-04-13 11:13:04 -04:00 committed by Tomas Janousek
parent f89df98f40
commit 52a5e7ca8c
1 changed files with 40 additions and 36 deletions
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76
src/XMonad/Operations.hs
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@ -10,7 +10,7 @@
-- Stability : unstable
-- Portability : not portable, mtl, posix
--
-- Operations.
-- Operations. A module for functions that don't cleanly fit anywhere else.
--
-----------------------------------------------------------------------------
@ -42,9 +42,10 @@ import Graphics.X11.Xinerama (getScreenInfo)
import Graphics.X11.Xlib.Extras
-- ---------------------------------------------------------------------
-- |
-- Window manager operations
-- manage. Add a new window to be managed in the current workspace.
-- |
-- Add a new window to be managed in the current workspace.
-- Bring it into focus.
--
-- Whether the window is already managed, or not, it is mapped, has its
@ -71,7 +72,7 @@ manage w = whenX (not <$> isClient w) $ withDisplay $ \d -> do
g <- appEndo <$> userCodeDef (Endo id) (runQuery mh w)
windows (g . f)
-- | unmanage. A window no longer exists, remove it from the window
-- | A window no longer exists; remove it from the window
-- list, on whatever workspace it is.
--
unmanage :: Window -> X ()
@ -102,7 +103,7 @@ kill = withFocused killWindow
-- ---------------------------------------------------------------------
-- Managing windows
-- | windows. Modify the current window list with a pure function, and refresh
-- | Modify the current window list with a pure function, and refresh
windows :: (WindowSet -> WindowSet) -> X ()
windows f = do
XState { windowset = old } <- get
@ -190,8 +191,10 @@ windowBracket p action = withWindowSet $ \old -> do
windows $ \_ -> new
return a
-- | A version of @windowBracket@ that discards the return value, and handles an
-- @X@ action reporting its need for refresh via @Any@.
-- | Perform an @X@ action. If it returns @Any True@, unwind the
-- changes to the @WindowSet@ and replay them using @windows@. This is
-- a version of @windowBracket@ that discards the return value and
-- handles an @X@ action that reports its need for refresh via @Any@.
windowBracket_ :: X Any -> X ()
windowBracket_ = void . windowBracket getAny
@ -201,14 +204,14 @@ scaleRationalRect (Rectangle sx sy sw sh) (W.RationalRect rx ry rw rh)
= Rectangle (sx + scale sw rx) (sy + scale sh ry) (scale sw rw) (scale sh rh)
where scale s r = floor (toRational s * r)
-- | setWMState. set the WM_STATE property
-- | Set a window's WM_STATE property.
setWMState :: Window -> Int -> X ()
setWMState w v = withDisplay $ \dpy -> do
a <- atom_WM_STATE
io $ changeProperty32 dpy w a a propModeReplace [fromIntegral v, fromIntegral none]
-- | Set the border color using the window's color map, if possible,
-- otherwise fallback to the color in @Pixel@.
-- | Set the border color using the window's color map, if possible;
-- otherwise fall back to the color in @Pixel@.
setWindowBorderWithFallback :: Display -> Window -> String -> Pixel -> X ()
setWindowBorderWithFallback dpy w color basic = io $
C.handle fallback $ do
@ -220,7 +223,7 @@ setWindowBorderWithFallback dpy w color basic = io $
fallback e = do hPrint stderr e >> hFlush stderr
setWindowBorder dpy w basic
-- | hide. Hide a window by unmapping it, and setting Iconified.
-- | Hide a window by unmapping it and setting Iconified.
hide :: Window -> X ()
hide w = whenX (gets (S.member w . mapped)) $ withDisplay $ \d -> do
cMask <- asks $ clientMask . config
@ -233,15 +236,15 @@ hide w = whenX (gets (S.member w . mapped)) $ withDisplay $ \d -> do
modify (\s -> s { waitingUnmap = M.insertWith (+) w 1 (waitingUnmap s)
, mapped = S.delete w (mapped s) })
-- | reveal. Show a window by mapping it and setting Normal
-- this is harmless if the window was already visible
-- | Show a window by mapping it and setting Normal.
-- This is harmless if the window was already visible.
reveal :: Window -> X ()
reveal w = withDisplay $ \d -> do
setWMState w normalState
io $ mapWindow d w
whenX (isClient w) $ modify (\s -> s { mapped = S.insert w (mapped s) })
-- | Set some properties when we initially gain control of a window
-- | Set some properties when we initially gain control of a window.
setInitialProperties :: Window -> X ()
setInitialProperties w = asks normalBorder >>= \nb -> withDisplay $ \d -> do
setWMState w iconicState
@ -252,7 +255,7 @@ setInitialProperties w = asks normalBorder >>= \nb -> withDisplay $ \d -> do
-- required by the border setting in 'windows'
io $ setWindowBorder d w nb
-- | refresh. Render the currently visible workspaces, as determined by
-- | Render the currently visible workspaces, as determined by
-- the 'StackSet'. Also, set focus to the focused window.
--
-- This is our 'view' operation (MVC), in that it pretty prints our model
@ -261,7 +264,7 @@ setInitialProperties w = asks normalBorder >>= \nb -> withDisplay $ \d -> do
refresh :: X ()
refresh = windows id
-- | clearEvents. Remove all events of a given type from the event queue.
-- | Remove all events of a given type from the event queue.
clearEvents :: EventMask -> X ()
clearEvents mask = withDisplay $ \d -> io $ do
sync d False
@ -269,8 +272,8 @@ clearEvents mask = withDisplay $ \d -> io $ do
more <- checkMaskEvent d mask p
when more again -- beautiful
-- | tileWindow. Moves and resizes w such that it fits inside the given
-- rectangle, including its border.
-- | Move and resize @w@ such that it fits inside the given rectangle,
-- including its border.
tileWindow :: Window -> Rectangle -> X ()
tileWindow w r = withDisplay $ \d -> withWindowAttributes d w $ \wa -> do
-- give all windows at least 1x1 pixels
@ -297,13 +300,13 @@ containedIn r1@(Rectangle x1 y1 w1 h1) r2@(Rectangle x2 y2 w2 h2)
nubScreens :: [Rectangle] -> [Rectangle]
nubScreens xs = nub . filter (\x -> not $ any (x `containedIn`) xs) $ xs
-- | Cleans the list of screens according to the rules documented for
-- | Clean the list of screens according to the rules documented for
-- nubScreens.
getCleanedScreenInfo :: MonadIO m => Display -> m [Rectangle]
getCleanedScreenInfo = io . fmap nubScreens . getScreenInfo
-- | rescreen. The screen configuration may have changed (due to
-- xrandr), update the state and refresh the screen, and reset the gap.
-- | The screen configuration may have changed (due to -- xrandr),
-- update the state and refresh the screen, and reset the gap.
rescreen :: X ()
rescreen = do
xinesc <- withDisplay getCleanedScreenInfo
@ -317,7 +320,7 @@ rescreen = do
-- ---------------------------------------------------------------------
-- | setButtonGrab. Tell whether or not to intercept clicks on a given window
-- | Tell whether or not to intercept clicks on a given window
setButtonGrab :: Bool -> Window -> X ()
setButtonGrab grab w = do
pointerMode <- asks $ \c -> if clickJustFocuses (config c)
@ -415,12 +418,12 @@ sendMessageWithNoRefresh a w =
handleMessage (W.layout w) (SomeMessage a) `catchX` return Nothing >>=
updateLayout (W.tag w)
-- | Update the layout field of a workspace
-- | Update the layout field of a workspace.
updateLayout :: WorkspaceId -> Maybe (Layout Window) -> X ()
updateLayout i ml = whenJust ml $ \l ->
runOnWorkspaces $ \ww -> return $ if W.tag ww == i then ww { W.layout = l} else ww
-- | Set the layout of the currently viewed workspace
-- | Set the layout of the currently viewed workspace.
setLayout :: Layout Window -> X ()
setLayout l = do
ss@(W.StackSet { W.current = c@(W.Screen { W.workspace = ws })}) <- gets windowset
@ -430,7 +433,7 @@ setLayout l = do
------------------------------------------------------------------------
-- Utilities
-- | Return workspace visible on screen 'sc', or 'Nothing'.
-- | Return workspace visible on screen @sc@, or 'Nothing'.
screenWorkspace :: ScreenId -> X (Maybe WorkspaceId)
screenWorkspace sc = withWindowSet $ return . W.lookupWorkspace sc
@ -438,7 +441,7 @@ screenWorkspace sc = withWindowSet $ return . W.lookupWorkspace sc
withFocused :: (Window -> X ()) -> X ()
withFocused f = withWindowSet $ \w -> whenJust (W.peek w) f
-- | 'True' if window is under management by us
-- | Is the window is under management by xmonad?
isClient :: Window -> X Bool
isClient w = withWindowSet $ return . W.member w
@ -449,13 +452,13 @@ extraModifiers = do
nlm <- gets numberlockMask
return [0, nlm, lockMask, nlm .|. lockMask ]
-- | Strip numlock\/capslock from a mask
-- | Strip numlock\/capslock from a mask.
cleanMask :: KeyMask -> X KeyMask
cleanMask km = do
nlm <- gets numberlockMask
return (complement (nlm .|. lockMask) .&. km)
-- | Get the 'Pixel' value for a named color
-- | Get the 'Pixel' value for a named color.
initColor :: Display -> String -> IO (Maybe Pixel)
initColor dpy c = C.handle (\(C.SomeException _) -> return Nothing) $
(Just . color_pixel . fst) <$> allocNamedColor dpy colormap c
@ -521,8 +524,8 @@ readStateFile xmc = do
readStrict :: Handle -> IO String
readStrict h = hGetContents h >>= \s -> length s `seq` return s
-- | @restart name resume@. Attempt to restart xmonad by executing the program
-- @name@. If @resume@ is 'True', restart with the current window state.
-- | @restart name resume@ attempts to restart xmonad by executing the program
-- @name@. If @resume@ is 'True', restart with the current window state.
-- When executing another window manager, @resume@ should be 'False'.
restart :: String -> Bool -> X ()
restart prog resume = do
@ -532,10 +535,10 @@ restart prog resume = do
catchIO (executeFile prog True [] Nothing)
------------------------------------------------------------------------
-- | Floating layer support
-- Floating layer support
-- | Given a window, find the screen it is located on, and compute
-- the geometry of that window wrt. that screen.
-- the geometry of that window WRT that screen.
floatLocation :: Window -> X (ScreenId, W.RationalRect)
floatLocation w =
catchX go $ do
@ -619,7 +622,7 @@ mouseDrag f done = do
clearEvents pointerMotionMask
return z
-- | drag the window under the cursor with the mouse while it is dragged
-- | Drag the window under the cursor with the mouse while it is dragged.
mouseMoveWindow :: Window -> X ()
mouseMoveWindow w = whenX (isClient w) $ withDisplay $ \d -> do
wa <- io $ getWindowAttributes d w
@ -633,7 +636,7 @@ mouseMoveWindow w = whenX (isClient w) $ withDisplay $ \d -> do
)
(float w)
-- | resize the window under the cursor with the mouse while it is dragged
-- | Resize the window under the cursor with the mouse while it is dragged.
mouseResizeWindow :: Window -> X ()
mouseResizeWindow w = whenX (isClient w) $ withDisplay $ \d -> do
wa <- io $ getWindowAttributes d w
@ -648,8 +651,9 @@ mouseResizeWindow w = whenX (isClient w) $ withDisplay $ \d -> do
(float w)
-- ---------------------------------------------------------------------
-- | Support for window size hints
-- Support for window size hints
-- | An alias for a (width, height) pair
type D = (Dimension, Dimension)
-- | Given a window, build an adjuster function that will reduce the given
@ -677,7 +681,7 @@ applySizeHintsContents :: Integral a => SizeHints -> (a, a) -> D
applySizeHintsContents sh (w, h) =
applySizeHints' sh (fromIntegral $ max 1 w, fromIntegral $ max 1 h)
-- | XXX comment me
-- | Use X11 size hints to scale a pair of dimensions.
applySizeHints' :: SizeHints -> D -> D
applySizeHints' sh =
maybe id applyMaxSizeHint (sh_max_size sh)