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f732082fdc
Typeable has been automatically derived for every type since GHC 7.10, so remove these obsolete derivations. This also allows us to get rid of the `DeriveDataTypeable` pragma quite naturally. Related: https://github.com/xmonad/xmonad/pull/299 (xmonad/xmonad@9e5b16ed8a) Related: bd5b969d9ba24236c0d5ef521c0397390dbc4b37 Fixes: https://github.com/xmonad/xmonad-contrib/issues/548
111 lines
3.8 KiB
Haskell
111 lines
3.8 KiB
Haskell
{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
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-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Layout.Reflect
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-- Copyright : (c) Brent Yorgey
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-- License : BSD-style (see LICENSE)
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--
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-- Maintainer : <byorgey@gmail.com>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- Reflect a layout horizontally or vertically.
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-----------------------------------------------------------------------------
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module XMonad.Layout.Reflect (
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-- * Usage
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-- $usage
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reflectHoriz, reflectVert,
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REFLECTX(..), REFLECTY(..),
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Reflect
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) where
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import XMonad.Prelude (fi)
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import Graphics.X11 (Rectangle(..), Window)
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import Control.Arrow (second)
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import XMonad.Layout.LayoutModifier
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import XMonad.Layout.MultiToggle
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-- $usage
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-- You can use this module by importing it into your @~\/.xmonad\/xmonad.hs@ file:
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--
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-- > import XMonad.Layout.Reflect
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--
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-- and modifying your layoutHook as follows (for example):
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--
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-- > layoutHook = reflectHoriz $ Tall 1 (3/100) (1/2) -- put master pane on the right
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--
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-- 'reflectHoriz' and 'reflectVert' can be applied to any sort of
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-- layout (including Mirrored layouts) and will simply flip the
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-- physical layout of the windows vertically or horizontally.
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--
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-- "XMonad.Layout.MultiToggle" transformers are also provided for
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-- toggling layouts between reflected\/non-reflected with a keybinding.
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-- To use this feature, you will also need to import the MultiToggle
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-- module:
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--
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-- > import XMonad.Layout.MultiToggle
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--
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-- Next, add one or more toggles to your layout. For example, to allow
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-- separate toggling of both vertical and horizontal reflection:
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--
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-- > layoutHook = mkToggle (single REFLECTX) $
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-- > mkToggle (single REFLECTY) $
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-- > (tiled ||| Mirror tiled ||| ...) -- whatever layouts you use
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--
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-- Finally, add some keybindings to do the toggling, for example:
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--
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-- > , ((modm .|. controlMask, xK_x), sendMessage $ Toggle REFLECTX)
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-- > , ((modm .|. controlMask, xK_y), sendMessage $ Toggle REFLECTY)
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--
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-- | Apply a horizontal reflection (left \<--\> right) to a
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-- layout.
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reflectHoriz :: l a -> ModifiedLayout Reflect l a
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reflectHoriz = ModifiedLayout (Reflect Horiz)
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-- | Apply a vertical reflection (top \<--\> bottom) to a
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-- layout.
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reflectVert :: l a -> ModifiedLayout Reflect l a
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reflectVert = ModifiedLayout (Reflect Vert)
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data ReflectDir = Horiz | Vert
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deriving (Read, Show)
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-- | Given an axis of reflection and the enclosing rectangle which
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-- contains all the laid out windows, transform a rectangle
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-- representing a window into its flipped counterpart.
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reflectRect :: ReflectDir -> Rectangle -> Rectangle -> Rectangle
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reflectRect Horiz (Rectangle sx _ sw _) (Rectangle rx ry rw rh) =
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Rectangle (2*sx + fi sw - rx - fi rw) ry rw rh
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reflectRect Vert (Rectangle _ sy _ sh) (Rectangle rx ry rw rh) =
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Rectangle rx (2*sy + fi sh - ry - fi rh) rw rh
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newtype Reflect a = Reflect ReflectDir deriving (Show, Read)
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instance LayoutModifier Reflect a where
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-- reflect all the generated Rectangles.
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pureModifier (Reflect d) r _ wrs = (map (second $ reflectRect d r) wrs, Just $ Reflect d)
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modifierDescription (Reflect d) = "Reflect" ++ xy
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where xy = case d of { Horiz -> "X" ; Vert -> "Y" }
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-------- instances for MultiToggle ------------------
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data REFLECTX = REFLECTX deriving (Read, Show, Eq)
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data REFLECTY = REFLECTY deriving (Read, Show, Eq)
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instance Transformer REFLECTX Window where
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transform REFLECTX x k = k (reflectHoriz x) (\(ModifiedLayout _ x') -> x')
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instance Transformer REFLECTY Window where
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transform REFLECTY x k = k (reflectVert x) (\(ModifiedLayout _ x') -> x')
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