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This is a convenience module in order to have less import noise. It
re-exports the following:
a) Commonly used modules in full (Data.Foldable, Data.Applicative, and
so on); though only those that play nicely with each other, so that
XMonad.Prelude can be imported unqualified without any problems.
This prevents things like `Prelude.(.)` and `Control.Category.(.)`
fighting with each other.
b) Helper functions that don't necessarily fit in any other module;
e.g., the often used abbreviation `fi = fromIntegral`.
127 lines
5.0 KiB
Haskell
127 lines
5.0 KiB
Haskell
{-# LANGUAGE MultiParamTypeClasses, TypeSynonymInstances #-}
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-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Layout.HintedTile
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-- Copyright : (c) Peter De Wachter <pdewacht@gmail.com>
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-- License : BSD3-style (see LICENSE)
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--
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-- Maintainer : Peter De Wachter <pdewacht@gmail.com>
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-- Andrea Rossato <andrea.rossato@unibz.it>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- A gapless tiled layout that attempts to obey window size hints,
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-- rather than simply ignoring them.
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--
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-----------------------------------------------------------------------------
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module XMonad.Layout.HintedTile (
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-- * Usage
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-- $usage
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HintedTile(..), Orientation(..), Alignment(..)
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) where
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import XMonad hiding (Tall(..))
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import qualified XMonad.StackSet as W
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import XMonad.Prelude
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-- $usage
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-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
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--
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-- > import XMonad.Layout.HintedTile
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--
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-- Then edit your @layoutHook@ by adding the HintedTile layout:
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--
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-- > myLayout = hintedTile Tall ||| hintedTile Wide ||| Full ||| etc..
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-- > where
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-- > hintedTile = HintedTile nmaster delta ratio TopLeft
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-- > nmaster = 1
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-- > ratio = 1/2
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-- > delta = 3/100
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-- > main = xmonad def { layoutHook = myLayout }
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--
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-- Because both Xmonad and Xmonad.Layout.HintedTile define Tall,
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-- you need to disambiguate Tall. If you are replacing the
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-- built-in Tall with HintedTile, change @import Xmonad@ to
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-- @import Xmonad hiding (Tall)@.
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--
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-- For more detailed instructions on editing the layoutHook see:
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--
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-- "XMonad.Doc.Extending#Editing_the_layout_hook"
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data HintedTile a = HintedTile
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{ nmaster :: !Int -- ^ number of windows in the master pane
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, delta :: !Rational -- ^ how much to change when resizing
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, frac :: !Rational -- ^ ratio between master/nonmaster panes
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, alignment :: !Alignment -- ^ Where to place windows that are smaller
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-- than their preordained rectangles.
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, orientation :: !Orientation -- ^ Tall or Wide (mirrored) layout?
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} deriving ( Show, Read )
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data Orientation
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= Wide -- ^ Lay out windows similarly to Mirror tiled.
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| Tall -- ^ Lay out windows similarly to tiled.
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deriving ( Show, Read, Eq, Ord )
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data Alignment = TopLeft | Center | BottomRight
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deriving ( Show, Read, Eq, Ord )
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instance LayoutClass HintedTile Window where
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doLayout (HintedTile { orientation = o, nmaster = nm, frac = f, alignment = al }) r w' = do
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bhs <- mapM mkAdjust w
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let (masters, slaves) = splitAt nm bhs
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return (zip w (tiler masters slaves), Nothing)
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where
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w = W.integrate w'
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tiler masters slaves
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| null masters || null slaves = divide al o (masters ++ slaves) r
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| otherwise = split o f r (divide al o masters) (divide al o slaves)
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pureMessage c m = fmap resize (fromMessage m) `mplus`
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fmap incmastern (fromMessage m)
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where
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resize Shrink = c { frac = max 0 $ frac c - delta c }
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resize Expand = c { frac = min 1 $ frac c + delta c }
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incmastern (IncMasterN d) = c { nmaster = max 0 $ nmaster c + d }
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description l = show (orientation l)
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align :: Alignment -> Position -> Dimension -> Dimension -> Position
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align TopLeft p _ _ = p
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align Center p a b = p + fromIntegral (a - b) `div` 2
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align BottomRight p a b = p + fromIntegral (a - b)
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-- Divide the screen vertically (horizontally) into n subrectangles
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divide :: Alignment -> Orientation -> [D -> D] -> Rectangle -> [Rectangle]
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divide _ _ [] _ = []
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divide al _ [bh] (Rectangle sx sy sw sh) = [Rectangle (align al sx sw w) (align al sy sh h) w h]
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where
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(w, h) = bh (sw, sh)
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divide al Tall (bh:bhs) (Rectangle sx sy sw sh) = (Rectangle (align al sx sw w) sy w h) :
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(divide al Tall bhs (Rectangle sx (sy + fromIntegral h) sw (sh - h)))
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where
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(w, h) = bh (sw, sh `div` fromIntegral (1 + (length bhs)))
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divide al Wide (bh:bhs) (Rectangle sx sy sw sh) = (Rectangle sx (align al sy sh h) w h) :
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(divide al Wide bhs (Rectangle (sx + fromIntegral w) sy (sw - w) sh))
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where
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(w, h) = bh (sw `div` fromIntegral (1 + (length bhs)), sh)
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-- Split the screen into two rectangles, using a rational to specify the ratio
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split :: Orientation -> Rational -> Rectangle -> (Rectangle -> [Rectangle])
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-> (Rectangle -> [Rectangle]) -> [Rectangle]
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split Tall f (Rectangle sx sy sw sh) left right = leftRects ++ rightRects
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where
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leftw = floor $ fromIntegral sw * f
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leftRects = left $ Rectangle sx sy leftw sh
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rightx = (maximum . map rect_width) leftRects
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rightRects = right $ Rectangle (sx + fromIntegral rightx) sy (sw - rightx) sh
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split Wide f (Rectangle sx sy sw sh) top bottom = topRects ++ bottomRects
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where
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toph = floor $ fromIntegral sh * f
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topRects = top $ Rectangle sx sy sw toph
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bottomy = (maximum . map rect_height) topRects
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bottomRects = bottom $ Rectangle sx (sy + fromIntegral bottomy) sw (sh - bottomy)
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