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https://github.com/xmonad/xmonad-contrib.git
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b1b3c4c469
With XDG support so firmly ingrained now, it's about time we stop hard-coding the configuration path in the docs.
78 lines
2.7 KiB
Haskell
78 lines
2.7 KiB
Haskell
{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TupleSections #-}
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-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Layout.Grid
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-- Description : A simple layout that attempts to put all windows in a square grid.
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-- Copyright : (c) Lukas Mai
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-- License : BSD-style (see LICENSE)
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--
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-- Maintainer : <l.mai@web.de>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- A simple layout that attempts to put all windows in a square grid.
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--
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-----------------------------------------------------------------------------
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module XMonad.Layout.Grid (
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-- * Usage
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-- $usage
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Grid(..), arrange, defaultRatio
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) where
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import XMonad
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import XMonad.StackSet
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-- $usage
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-- You can use this module with the following in your @xmonad.hs@:
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--
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-- > import XMonad.Layout.Grid
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--
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-- Then edit your @layoutHook@ by adding the Grid layout:
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--
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-- > myLayout = Grid ||| Full ||| etc..
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-- > main = xmonad def { layoutHook = myLayout }
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--
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-- You can also specify an aspect ratio for Grid to strive for with the
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-- GridRatio constructor. For example, if you want Grid to try to make a grid
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-- four windows wide and three windows tall, you could use
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--
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-- > myLayout = GridRatio (4/3) ||| etc.
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--
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-- For more detailed instructions on editing the layoutHook see
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-- <https://xmonad.org/TUTORIAL.html#customizing-xmonad the tutorial> and
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-- "XMonad.Doc.Extending#Editing_the_layout_hook".
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data Grid a = Grid | GridRatio Double deriving (Read, Show)
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defaultRatio :: Double
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defaultRatio = 16/9
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instance LayoutClass Grid a where
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pureLayout Grid r = pureLayout (GridRatio defaultRatio) r
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pureLayout (GridRatio d) r = arrange d r . integrate
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arrange :: Double -> Rectangle -> [a] -> [(a, Rectangle)]
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arrange aspectRatio (Rectangle rx ry rw rh) st = zip st rectangles
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where
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nwins = length st
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ncols = max 1 . min nwins . round . sqrt $ fromIntegral nwins * fromIntegral rw / (fromIntegral rh * aspectRatio)
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mincs = max 1 $ nwins `div` ncols
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extrs = nwins - ncols * mincs
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chop :: Int -> Dimension -> [(Position, Dimension)]
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chop n m = ((0, m - k * fromIntegral (pred n)) :) . map (, k) . drop 1 . reverse . take n . drop 1 . iterate (subtract k') $ m'
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where
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k :: Dimension
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k = m `div` fromIntegral n
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m' = fromIntegral m
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k' :: Position
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k' = fromIntegral k
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xcoords = chop ncols rw
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ycoords = chop mincs rh
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ycoords' = chop (succ mincs) rh
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(xbase, xext) = splitAt (ncols - extrs) xcoords
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rectangles = combine ycoords xbase ++ combine ycoords' xext
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where
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combine ys xs = [Rectangle (rx + x) (ry + y) w h | (x, w) <- xs, (y, h) <- ys]
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