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Diffstat (limited to 'XMonad/Layout/LayoutCombinators.hs')
| -rw-r--r-- | XMonad/Layout/LayoutCombinators.hs | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/XMonad/Layout/LayoutCombinators.hs b/XMonad/Layout/LayoutCombinators.hs new file mode 100644 index 0000000..4b2aa09 --- /dev/null +++ b/XMonad/Layout/LayoutCombinators.hs @@ -0,0 +1,128 @@ +{-# OPTIONS_GHC -fglasgow-exts #-} -- For deriving Data/Typeable +{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, PatternGuards #-} + +----------------------------------------------------------------------------- +-- | +-- Module : XMonad.Layout.LayoutCombinators +-- Copyright : (c) David Roundy <droundy@darcs.net> +-- License : BSD +-- +-- Maintainer : David Roundy <droundy@darcs.net> +-- Stability : unstable +-- Portability : portable +-- +-- A module for combining Layouts +----------------------------------------------------------------------------- + +module XMonad.Layout.LayoutCombinators ( + -- * Usage + -- $usage + (<|>), (</>), (<||>), (<//>), (|||), JumpToLayout(JumpToLayout) + ) where + +import Data.Maybe ( isJust ) + +import XMonad +import Layouts ( Tall(..), Mirror(..), ChangeLayout(NextLayout) ) +import XMonad.Layout.Combo +import XMonad.Layout.DragPane + +-- $usage +-- Use LayoutCombinators to easily combine Layouts. + +(<||>), (<//>) :: (Read a, Eq a, LayoutClass l1 a, LayoutClass l2 a) => + l1 a -> l2 a -> CombineTwo DragPane l1 l2 a +(<|>) :: (Read a, Eq a, LayoutClass l1 a, LayoutClass l2 a) + => l1 a -> l2 a -> CombineTwo Tall l1 l2 a +(</>) :: (Read a, Eq a, LayoutClass l1 a, LayoutClass l2 a) + => l1 a -> l2 a -> CombineTwo (Mirror Tall) l1 l2 a + +(<||>) = combineTwo (dragPane Vertical 0.1 0.5) +(<//>) = combineTwo (dragPane Horizontal 0.1 0.5) +(<|>) = combineTwo (Tall 1 0.1 0.5) +(</>) = combineTwo (Mirror $ Tall 1 0.1 0.5) + +(|||) :: (LayoutClass l1 a, LayoutClass l2 a) => l1 a -> l2 a -> NewSelect l1 l2 a +(|||) = NewSelect True + +data NewSelect l1 l2 a = NewSelect Bool (l1 a) (l2 a) deriving ( Read, Show ) + +data NoWrap = NextLayoutNoWrap | Wrap deriving ( Read, Show, Typeable ) +instance Message NoWrap + +data JumpToLayout = JumpToLayout String deriving ( Read, Show, Typeable ) +instance Message JumpToLayout + +instance (LayoutClass l1 a, LayoutClass l2 a) => LayoutClass (NewSelect l1 l2) a where + doLayout (NewSelect True l1 l2) r s = do (wrs, ml1') <- doLayout l1 r s + return (wrs, (\l1' -> NewSelect True l1' l2) `fmap` ml1') + doLayout (NewSelect False l1 l2) r s = do (wrs, ml2') <- doLayout l2 r s + return (wrs, (\l2' -> NewSelect False l1 l2') `fmap` ml2') + description (NewSelect True l1 _) = description l1 + description (NewSelect False _ l2) = description l2 + handleMessage (NewSelect False l1 l2) m + | Just Wrap <- fromMessage m = + do ml2' <- handleMessage l2 (SomeMessage Hide) + ml1' <- handleMessage l1 m + return $ Just $ NewSelect True (maybe l1 id ml1') (maybe l2 id ml2') + handleMessage (NewSelect True l1 l2) m + | Just NextLayoutNoWrap <- fromMessage m = + do ml1' <- handleMessage l1 m + case ml1' of + Just l1' -> return $ Just (NewSelect True l1' l2) + Nothing -> do ml1'' <- handleMessage l1 (SomeMessage Hide) + ml2' <- handleMessage l2 (SomeMessage Wrap) + return $ Just $ NewSelect False (maybe l1 id ml1'') (maybe l2 id ml2') + handleMessage l@(NewSelect True _ _) m + | Just NextLayout <- fromMessage m = handleMessage l (SomeMessage NextLayoutNoWrap) + handleMessage l@(NewSelect False l1 l2) m + | Just NextLayout <- fromMessage m = + do ml' <- handleMessage l (SomeMessage NextLayoutNoWrap) + case ml' of + Just l' -> return $ Just l' + Nothing -> do ml2' <- handleMessage l2 (SomeMessage Hide) + ml1' <- handleMessage l1 (SomeMessage Wrap) + return $ Just $ NewSelect True (maybe l1 id ml1') (maybe l2 id ml2') + handleMessage (NewSelect True l1 l2) m + | Just (JumpToLayout d) <- fromMessage m, + d == description l2 = do ml1' <- handleMessage l1 (SomeMessage Hide) + return $ Just $ NewSelect False (maybe l1 id ml1') l2 + handleMessage (NewSelect True l1 l2) m + | Just (JumpToLayout d) <- fromMessage m + = do ml1' <- handleMessage l1 m + case ml1' of + Just l1' -> return $ Just $ NewSelect True l1' l2 + Nothing -> + do ml2' <- handleMessage l2 m + case ml2' of + Nothing -> return Nothing + Just l2' -> do ml1'' <- handleMessage l1 (SomeMessage Hide) + return $ Just $ NewSelect False (maybe l1 id ml1'') l2' + handleMessage (NewSelect False l1 l2) m + | Just (JumpToLayout d) <- fromMessage m, + d == description l1 = do ml2' <- handleMessage l2 (SomeMessage Hide) + return $ Just $ NewSelect True l1 (maybe l2 id ml2') + handleMessage (NewSelect False l1 l2) m + | Just (JumpToLayout d) <- fromMessage m + = do ml2' <- handleMessage l2 m + case ml2' of + Just l2' -> return $ Just $ NewSelect False l1 l2' + Nothing -> + do ml1' <- handleMessage l1 m + case ml1' of + Nothing -> return Nothing + Just l1' -> do ml2'' <- handleMessage l2 (SomeMessage Hide) + return $ Just $ NewSelect True l1' (maybe l2 id ml2'') + handleMessage (NewSelect b l1 l2) m + | Just ReleaseResources <- fromMessage m = + do ml1' <- handleMessage l1 m + ml2' <- handleMessage l2 m + return $ if isJust ml1' || isJust ml2' + then Just $ NewSelect b (maybe l1 id ml1') (maybe l2 id ml2') + else Nothing + handleMessage (NewSelect True l1 l2) m = + do ml1' <- handleMessage l1 m + return $ (\l1' -> NewSelect True l1' l2) `fmap` ml1' + handleMessage (NewSelect False l1 l2) m = + do ml2' <- handleMessage l2 m + return $ (\l2' -> NewSelect False l1 l2') `fmap` ml2' |