xmonad-contrib-0.18.0: Community-maintained extensions for xmonad

Copyright | (c) 2008 Brent Yorgey
License | BSD3
Maintainer | <byorgey@gmail.com>
Stability | unstable
Portability | unportable
Safe Haskell | None
Language | Haskell2010

XMonad.Layout.Gaps

Contents

- Usage

Description

Create manually-sized gaps along edges of the screen which will not be used for tiling, along with support for toggling gaps on and off.

Note 1: For gaps/space around windows see XMonad.Layout.Spacing.

Note 2: XMonad.Hooks.ManageDocks is the preferred solution for leaving space for your dock-type applications (status bars, toolbars, docks, etc.), since it automatically sets up appropriate gaps, allows them to be toggled, etc. However, this module may still be useful in some situations where the automated approach of ManageDocks does not work; for example, to work with a dock-type application that does not properly set the STRUTS property, or to leave part of the screen blank which is truncated by a projector, and so on.

Synopsis

- data Direction2D
  - = U
  - | D
  - | R
  - | L
- data Gaps a
- type GapSpec = [(Direction2D, Int)]
- gaps :: GapSpec -> l a -> ModifiedLayout Gaps l a
- gaps' :: [((Direction2D, Int), Bool)] -> l a -> ModifiedLayout Gaps l a
- data GapMessage
  - = ToggleGaps
  - | ToggleGap !Direction2D
  - | IncGap !Int !Direction2D
  - | DecGap !Int !Direction2D
  - | ModifyGaps (GapSpec -> GapSpec)
- weakModifyGaps :: (Direction2D -> Int -> Int) -> GapMessage
- modifyGap :: (Int -> Int) -> Direction2D -> GapMessage
- setGaps :: GapSpec -> GapMessage
- setGap :: Int -> Direction2D -> GapMessage

# Usage

You can use this module by importing it into your `xmonad.hs` file:

    import XMonad.Layout.Gaps

and applying the `gaps` modifier to your layouts as follows (for example):

    layoutHook = gaps [(U,18), (R,23)] $ Tall 1 (3/100) (1/2) ||| Full  -- leave gaps at the top and right

You can additionally add some keybindings to toggle or modify the gaps, for example:

    , ((modm .|. controlMask, xK_g), sendMessage $ ToggleGaps)               -- toggle all gaps
    , ((modm .|. controlMask, xK_t), sendMessage $ ToggleGap U)              -- toggle the top gap
    , ((modm .|. controlMask, xK_w), sendMessage $ IncGap 5 R)               -- increment the right-hand gap
    , ((modm .|. controlMask, xK_q), sendMessage $ DecGap 5 R)               -- decrement the right-hand gap
    , ((modm .|. controlMask, xK_r), sendMessage $ ModifyGaps rotateGaps)    -- rotate gaps 90 degrees clockwise
    , ((modm .|. controlMask, xK_h), sendMessage $ weakModifyGaps halveHor)  -- halve the left and right-hand gaps
    , ((modm .|. controlMask, xK_d), sendMessage $ modifyGap (*2) L)         -- double the left-hand gap
    , ((modm .|. controlMask, xK_s), sendMessage $ setGaps [(U,18), (R,23)]) -- reset the GapSpec
    , ((modm .|. controlMask, xK_b), sendMessage $ setGap 30 D)              -- set the bottom gap to 30
    ]
      where rotateGaps gs = zip (map (rotate . fst) gs) (map snd gs)
            rotate U = R
            rotate R = D
            rotate D = L
            rotate L = U
            halveHor d i | d `elem` [L, R] = i `div` 2
                         | otherwise       = i

If you want complete control over all gaps, you could include something like this in your keybindings, assuming in this case you are using `mkKeymap` or `additionalKeysP` from XMonad.Util.EZConfig for string keybinding specifications:

    ++
    [ ("M-g " ++ f ++ " " ++ k, sendMessage $ m d)
        | (k, d) <- [("a",L), ("s",D), ("w",U), ("d",R)]
        , (f, m) <- [("v", ToggleGap), ("h", IncGap 10), ("f", DecGap 10)]
    ]

Given the above keybinding definition, for example, you could type `M-g, v, a` to toggle the top gap.

To configure gaps differently per-screen, use XMonad.Layout.PerScreen (coming soon).

Warning: If you also use the `avoidStruts` layout modifier, it must come before any of these modifiers. See the documentation of `avoidStruts` for details.

data Direction2D #

Two-dimensional directions:

Constructors

U | Up
D | Down
R | Right
L | Left

#### Instances

Instances details

Bounded Direction2D # |
Instance details Defined in XMonad.Util.Types Methods minBound :: Direction2D # maxBound :: Direction2D #
Enum Direction2D # |
Instance details Defined in XMonad.Util.Types Methods succ :: Direction2D -> Direction2D # pred :: Direction2D -> Direction2D # toEnum :: Int -> Direction2D # fromEnum :: Direction2D -> Int # enumFrom :: Direction2D -> [Direction2D] # enumFromThen :: Direction2D -> Direction2D -> [Direction2D] # enumFromTo :: Direction2D -> Direction2D -> [Direction2D] # enumFromThenTo :: Direction2D -> Direction2D -> Direction2D -> [Direction2D] #
Read Direction2D # |
Instance details Defined in XMonad.Util.Types Methods readsPrec :: Int -> ReadS Direction2D # readList :: ReadS [Direction2D] # readPrec :: ReadPrec Direction2D # readListPrec :: ReadPrec [Direction2D] #
Show Direction2D # |
Instance details Defined in XMonad.Util.Types Methods showsPrec :: Int -> Direction2D -> ShowS # show :: Direction2D -> String # showList :: [Direction2D] -> ShowS #
Eq Direction2D # |
Instance details Defined in XMonad.Util.Types Methods (==) :: Direction2D -> Direction2D -> Bool # (/=) :: Direction2D -> Direction2D -> Bool #
Ord Direction2D # |
Instance details Defined in XMonad.Util.Types Methods compare :: Direction2D -> Direction2D -> Ordering # (<) :: Direction2D -> Direction2D -> Bool # (<=) :: Direction2D -> Direction2D -> Bool # (>) :: Direction2D -> Direction2D -> Bool # (>=) :: Direction2D -> Direction2D -> Bool # max :: Direction2D -> Direction2D -> Direction2D # min :: Direction2D -> Direction2D -> Direction2D #

data Gaps a #

The gap state. The first component is the configuration (which gaps are allowed, and their current size), the second is the gaps which are currently active.

#### Instances

Instances details

LayoutModifier Gaps a # |
Instance details Defined in XMonad.Layout.Gaps Methods modifyLayout :: LayoutClass l a => Gaps a -> Workspace WorkspaceId (l a) a -> Rectangle -> X ([(a, Rectangle)], Maybe (l a)) # modifyLayoutWithUpdate :: LayoutClass l a => Gaps a -> Workspace WorkspaceId (l a) a -> Rectangle -> X (([(a, Rectangle)], Maybe (l a)), Maybe (Gaps a)) # handleMess :: Gaps a -> SomeMessage -> X (Maybe (Gaps a)) # handleMessOrMaybeModifyIt :: Gaps a -> SomeMessage -> X (Maybe (Either (Gaps a) SomeMessage)) # pureMess :: Gaps a -> SomeMessage -> Maybe (Gaps a) # redoLayout :: Gaps a -> Rectangle -> Maybe (Stack a) -> [(a, Rectangle)] -> X ([(a, Rectangle)], Maybe (Gaps a)) # pureModifier :: Gaps a -> Rectangle -> Maybe (Stack a) -> [(a, Rectangle)] -> ([(a, Rectangle)], Maybe (Gaps a)) # hook :: Gaps a -> X () # unhook :: Gaps a -> X () # modifierDescription :: Gaps a -> String # modifyDescription :: LayoutClass l a => Gaps a -> l a -> String #
Read (Gaps a) # |
Instance details Defined in XMonad.Layout.Gaps Methods readsPrec :: Int -> ReadS (Gaps a) # readList :: ReadS [Gaps a] # readPrec :: ReadPrec (Gaps a) # readListPrec :: ReadPrec [Gaps a] #
Show (Gaps a) # |
Instance details Defined in XMonad.Layout.Gaps Methods showsPrec :: Int -> Gaps a -> ShowS # show :: Gaps a -> String # showList :: [Gaps a] -> ShowS #

type GapSpec = [(Direction2D, Int)] #

A manual gap configuration. Each side of the screen on which a gap is enabled is paired with a size in pixels.

gaps #

Arguments

:: GapSpec | The gaps to allow, paired with their initial sizes.
-> l a | The layout to modify.
-> ModifiedLayout Gaps l a |

Add togglable manual gaps to a layout.

gaps' #

Arguments

:: [((Direction2D, Int), Bool)] | The gaps to allow and their initial states.
-> l a | The layout to modify.
-> ModifiedLayout Gaps l a |

Add togglable manual gaps to a layout, explicitly specifying the initial states.

data GapMessage #

Messages which can be sent to a gap modifier.

Constructors

ToggleGaps | Toggle all gaps.
ToggleGap !Direction2D | Toggle a single gap.
IncGap !Int !Direction2D | Increase a gap by a certain number of pixels.
DecGap !Int !Direction2D | Decrease a gap.
ModifyGaps (GapSpec -> GapSpec) | Modify arbitrarily.

#### Instances

Instances details

Message GapMessage # |
Instance details Defined in XMonad.Layout.Gaps

weakModifyGaps :: (Direction2D -> Int -> Int) -> GapMessage #

Modifies gaps weakly, for convenience.

modifyGap :: (Int -> Int) -> Direction2D -> GapMessage #

Arbitrarily modify a single gap with the given function.

setGaps :: GapSpec -> GapMessage #

Set the GapSpec.

setGap :: Int -> Direction2D -> GapMessage #

Set a gap to the given value.