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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable, PatternGuards, FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances #-}</span>
<a name="line-2"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : XMonad.Layout.WindowArranger</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Andrea Rossato 2007</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see xmonad/LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : andrea.rossato@unibz.it</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This is a pure layout modifier that will let you move and resize</span>
<a name="line-13"></a><span class='hs-comment'>-- windows with the keyboard in any layout.</span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>WindowArranger</span>
<a name="line-17"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage</span>
<a name="line-18"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-19"></a> <span class='hs-varid'>windowArrange</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>windowArrangeAll</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>WindowArrangerMsg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>WindowArranger</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>memberFromList</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>listFromList</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>diff</span>
<a name="line-26"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>S</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>LayoutModifier</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>XUtils</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span><span class='hs-layout'>)</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Arrow</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-36"></a>
<a name="line-37"></a><span class='hs-comment'>-- $usage</span>
<a name="line-38"></a><span class='hs-comment'>-- You can use this module with the following in your</span>
<a name="line-39"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- > import XMonad.Layout.WindowArranger</span>
<a name="line-42"></a><span class='hs-comment'>-- > myLayout = layoutHook defaultConfig</span>
<a name="line-43"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = windowArrange myLayout }</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- or</span>
<a name="line-46"></a><span class='hs-comment'>--</span>
<a name="line-47"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = windowArrangeAll myLayout }</span>
<a name="line-48"></a><span class='hs-comment'>--</span>
<a name="line-49"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-50"></a><span class='hs-comment'>--</span>
<a name="line-51"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-52"></a><span class='hs-comment'>--</span>
<a name="line-53"></a><span class='hs-comment'>-- You may also want to define some key binding to move or resize</span>
<a name="line-54"></a><span class='hs-comment'>-- windows. These are good defaults:</span>
<a name="line-55"></a><span class='hs-comment'>--</span>
<a name="line-56"></a><span class='hs-comment'>-- > , ((modm .|. controlMask , xK_s ), sendMessage Arrange )</span>
<a name="line-57"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_s ), sendMessage DeArrange )</span>
<a name="line-58"></a><span class='hs-comment'>-- > , ((modm .|. controlMask , xK_Left ), sendMessage (MoveLeft 1))</span>
<a name="line-59"></a><span class='hs-comment'>-- > , ((modm .|. controlMask , xK_Right), sendMessage (MoveRight 1))</span>
<a name="line-60"></a><span class='hs-comment'>-- > , ((modm .|. controlMask , xK_Down ), sendMessage (MoveDown 1))</span>
<a name="line-61"></a><span class='hs-comment'>-- > , ((modm .|. controlMask , xK_Up ), sendMessage (MoveUp 1))</span>
<a name="line-62"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_Left ), sendMessage (IncreaseLeft 1))</span>
<a name="line-63"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_Right), sendMessage (IncreaseRight 1))</span>
<a name="line-64"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_Down ), sendMessage (IncreaseDown 1))</span>
<a name="line-65"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_Up ), sendMessage (IncreaseUp 1))</span>
<a name="line-66"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_Left ), sendMessage (DecreaseLeft 1))</span>
<a name="line-67"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_Right), sendMessage (DecreaseRight 1))</span>
<a name="line-68"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_Down ), sendMessage (DecreaseDown 1))</span>
<a name="line-69"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_Up ), sendMessage (DecreaseUp 1))</span>
<a name="line-70"></a><span class='hs-comment'>--</span>
<a name="line-71"></a><span class='hs-comment'>-- For detailed instructions on editing your key bindings, see</span>
<a name="line-72"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_key_bindings".</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="windowArrange"></a><span class='hs-comment'>-- | A layout modifier to float the windows in a workspace</span>
<a name="line-75"></a><span class='hs-definition'>windowArrange</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-conid'>WindowArranger</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-76"></a><span class='hs-definition'>windowArrange</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-conid'>False</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="windowArrangeAll"></a><span class='hs-comment'>-- | A layout modifier to float all the windows in a workspace</span>
<a name="line-79"></a><span class='hs-definition'>windowArrangeAll</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-conid'>WindowArranger</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-80"></a><span class='hs-definition'>windowArrangeAll</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-conid'>True</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="WindowArrangerMsg"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>WindowArrangerMsg</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DeArrange</span>
<a name="line-83"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Arrange</span>
<a name="line-84"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncreaseLeft</span> <span class='hs-conid'>Int</span>
<a name="line-85"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncreaseRight</span> <span class='hs-conid'>Int</span>
<a name="line-86"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncreaseUp</span> <span class='hs-conid'>Int</span>
<a name="line-87"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncreaseDown</span> <span class='hs-conid'>Int</span>
<a name="line-88"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DecreaseLeft</span> <span class='hs-conid'>Int</span>
<a name="line-89"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DecreaseRight</span> <span class='hs-conid'>Int</span>
<a name="line-90"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DecreaseUp</span> <span class='hs-conid'>Int</span>
<a name="line-91"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DecreaseDown</span> <span class='hs-conid'>Int</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MoveLeft</span> <span class='hs-conid'>Int</span>
<a name="line-93"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MoveRight</span> <span class='hs-conid'>Int</span>
<a name="line-94"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MoveUp</span> <span class='hs-conid'>Int</span>
<a name="line-95"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MoveDown</span> <span class='hs-conid'>Int</span>
<a name="line-96"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SetGeometry</span> <span class='hs-conid'>Rectangle</span>
<a name="line-97"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Typeable</span> <span class='hs-layout'>)</span>
<a name="line-98"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Message</span> <span class='hs-conid'>WindowArrangerMsg</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="ArrangedWindow"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WR</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span>
<a name="line-101"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AWR</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="ArrangeAll"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ArrangeAll</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Bool</span>
<a name="line-105"></a><a name="WindowArranger"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>WindowArranger</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>Bool</span> <span class='hs-conid'>ArrangeAll</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-106"></a>
<a name="line-107"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-conid'>WindowArranger</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-108"></a> <span class='hs-varid'>pureModifier</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>arrangeWindows</span> <span class='hs-varid'>b</span> <span class='hs-varid'>wrs</span>
<a name="line-109"></a>
<a name="line-110"></a> <span class='hs-varid'>pureModifier</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-varid'>awrs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>curry</span> <span class='hs-varid'>process</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>awrs</span>
<a name="line-111"></a> <span class='hs-keyword'>where</span>
<a name="line-112"></a> <span class='hs-varid'>wins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>***</span> <span class='hs-varid'>map</span> <span class='hs-varid'>awrWin</span>
<a name="line-113"></a> <span class='hs-varid'>update</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkNewAWRs</span> <span class='hs-varid'>b</span> <span class='hs-varid'>a</span> <span class='hs-varop'>***</span> <span class='hs-varid'>removeAWRs</span> <span class='hs-varid'>r</span> <span class='hs-varop'>>>></span> <span class='hs-varid'>uncurry</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-varid'>process</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>wins</span> <span class='hs-varop'>&&&</span> <span class='hs-varid'>id</span> <span class='hs-varop'>>>></span> <span class='hs-varid'>first</span> <span class='hs-varid'>diff</span> <span class='hs-varop'>>>></span> <span class='hs-varid'>uncurry</span> <span class='hs-varid'>update</span> <span class='hs-varop'>>>></span>
<a name="line-115"></a> <span class='hs-varid'>replaceWR</span> <span class='hs-varid'>wrs</span> <span class='hs-varop'>>>></span> <span class='hs-varid'>putOnTop</span> <span class='hs-varid'>w</span> <span class='hs-varop'>>>></span> <span class='hs-varid'>map</span> <span class='hs-varid'>fromAWR</span> <span class='hs-varop'>&&&</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span>
<a name="line-116"></a>
<a name="line-117"></a> <span class='hs-varid'>pureModifier</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-118"></a>
<a name="line-119"></a> <span class='hs-varid'>pureMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-conop'>:</span><span class='hs-varid'>wrs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-120"></a> <span class='hs-comment'>-- increase the window's size</span>
<a name="line-121"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncreaseRight</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>h</span>
<a name="line-122"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncreaseLeft</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>h</span>
<a name="line-123"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncreaseUp</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncreaseDown</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-125"></a> <span class='hs-comment'>-- decrease the window's size</span>
<a name="line-126"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecreaseRight</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-layout'>(</span><span class='hs-varid'>chk</span> <span class='hs-varid'>w</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>h</span>
<a name="line-127"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecreaseLeft</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-layout'>(</span><span class='hs-varid'>chk</span> <span class='hs-varid'>w</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>h</span>
<a name="line-128"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecreaseUp</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>chk</span> <span class='hs-varid'>h</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-129"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecreaseDown</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>chk</span> <span class='hs-varid'>h</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-130"></a> <span class='hs-comment'>--move the window around</span>
<a name="line-131"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>MoveRight</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span>
<a name="line-132"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>MoveLeft</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span>
<a name="line-133"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>MoveUp</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span>
<a name="line-134"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>MoveDown</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fm</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>win</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>res</span> <span class='hs-varid'>win</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span>
<a name="line-135"></a>
<a name="line-136"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>res</span> <span class='hs-varid'>wi</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-conid'>AWR</span> <span class='hs-layout'>(</span><span class='hs-varid'>wi</span><span class='hs-layout'>,</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>wrs</span>
<a name="line-137"></a> <span class='hs-varid'>fm</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span>
<a name="line-138"></a> <span class='hs-varid'>fa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromAWR</span> <span class='hs-varid'>wr</span>
<a name="line-139"></a> <span class='hs-varid'>chk</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fi</span> <span class='hs-varop'>$</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-140"></a>
<a name="line-141"></a> <span class='hs-varid'>pureMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-varid'>t</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-conop'>:</span><span class='hs-varid'>wrs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-142"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromAWR</span> <span class='hs-varid'>wr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-conid'>WA</span> <span class='hs-varid'>t</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-conid'>AWR</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>wrs</span>
<a name="line-143"></a>
<a name="line-144"></a> <span class='hs-varid'>pureMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>WA</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>b</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-145"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>DeArrange</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>False</span> <span class='hs-varid'>b</span> <span class='hs-varid'>l</span>
<a name="line-146"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Arrange</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-varid'>l</span>
<a name="line-147"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="arrangeWindows"></a><span class='hs-definition'>arrangeWindows</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ArrangeAll</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>WindowArranger</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-150"></a><span class='hs-definition'>arrangeWindows</span> <span class='hs-varid'>b</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>WA</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>t</span> <span class='hs-varid'>wrs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-151"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>AWR</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>WR</span>
<a name="line-152"></a>
<a name="line-153"></a><a name="fromAWR"></a><span class='hs-definition'>fromAWR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span>
<a name="line-154"></a><span class='hs-definition'>fromAWR</span> <span class='hs-layout'>(</span><span class='hs-conid'>WR</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-155"></a><span class='hs-definition'>fromAWR</span> <span class='hs-layout'>(</span><span class='hs-conid'>AWR</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-156"></a>
<a name="line-157"></a><a name="awrWin"></a><span class='hs-definition'>awrWin</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-158"></a><span class='hs-definition'>awrWin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromAWR</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="getAWR"></a><span class='hs-definition'>getAWR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-161"></a><span class='hs-definition'>getAWR</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memberFromList</span> <span class='hs-varid'>awrWin</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="getWR"></a><span class='hs-definition'>getWR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-164"></a><span class='hs-definition'>getWR</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memberFromList</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-165"></a>
<a name="line-166"></a><a name="mkNewAWRs"></a><span class='hs-definition'>mkNewAWRs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ArrangeAll</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-167"></a><span class='hs-definition'>mkNewAWRs</span> <span class='hs-varid'>b</span> <span class='hs-varid'>w</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>t</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-varid'>flip</span> <span class='hs-varid'>getWR</span> <span class='hs-varid'>wrs</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>w</span>
<a name="line-168"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>AWR</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>WR</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="removeAWRs"></a><span class='hs-definition'>removeAWRs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-171"></a><span class='hs-definition'>removeAWRs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listFromList</span> <span class='hs-varid'>awrWin</span> <span class='hs-varid'>notElem</span>
<a name="line-172"></a>
<a name="line-173"></a><a name="putOnTop"></a><span class='hs-definition'>putOnTop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-174"></a><span class='hs-definition'>putOnTop</span> <span class='hs-varid'>w</span> <span class='hs-varid'>awrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>awr</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nawrs</span>
<a name="line-175"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>awr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getAWR</span> <span class='hs-varid'>w</span> <span class='hs-varid'>awrs</span>
<a name="line-176"></a> <span class='hs-varid'>nawrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>/=</span><span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>awrWin</span><span class='hs-layout'>)</span> <span class='hs-varid'>awrs</span>
<a name="line-177"></a>
<a name="line-178"></a><a name="replaceWR"></a><span class='hs-definition'>replaceWR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ArrangedWindow</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-179"></a><span class='hs-definition'>replaceWR</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>r</span> <span class='hs-conid'>[]</span>
<a name="line-180"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>r</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span>
<a name="line-181"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>WR</span> <span class='hs-varid'>wr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>wr</span> <span class='hs-varop'>`elemIndex`</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>wrs</span> <span class='hs-keyword'>of</span>
<a name="line-182"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>WR</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wrs</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span>
<a name="line-183"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span>
<a name="line-184"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span>
<a name="line-185"></a>
<a name="line-186"></a><a name="listFromList"></a><span class='hs-comment'>-- | Given a function to be applied to each member of a list, and a</span>
<a name="line-187"></a><span class='hs-comment'>-- function to check a condition by processing this transformed member</span>
<a name="line-188"></a><span class='hs-comment'>-- with the members of a list, you get the list of members that</span>
<a name="line-189"></a><span class='hs-comment'>-- satisfy the condition.</span>
<a name="line-190"></a><span class='hs-definition'>listFromList</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-191"></a><span class='hs-definition'>listFromList</span> <span class='hs-varid'>f</span> <span class='hs-varid'>g</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-192"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>h</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ys</span>
<a name="line-193"></a>
<a name="line-194"></a><a name="memberFromList"></a><span class='hs-comment'>-- | Given a function to be applied to each member of ta list, and a</span>
<a name="line-195"></a><span class='hs-comment'>-- function to check a condition by processing this transformed member</span>
<a name="line-196"></a><span class='hs-comment'>-- with something, you get the first member that satisfy the condition,</span>
<a name="line-197"></a><span class='hs-comment'>-- or an empty list.</span>
<a name="line-198"></a><span class='hs-definition'>memberFromList</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-199"></a><span class='hs-definition'>memberFromList</span> <span class='hs-varid'>f</span> <span class='hs-varid'>g</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-200"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>h</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ys</span>
<a name="line-201"></a>
<a name="line-202"></a><a name="diff"></a><span class='hs-comment'>-- | Get the list of elements to be deleted and the list of elements to</span>
<a name="line-203"></a><span class='hs-comment'>-- be added to the first list in order to get the second list.</span>
<a name="line-204"></a><span class='hs-definition'>diff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-205"></a><span class='hs-definition'>diff</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
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