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<title>XMonad/Layout/StackTile.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable, FlexibleInstances, GeneralizedNewtypeDeriving, MultiParamTypeClasses #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : XMonad.Layout.StackTile</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) Rickard Gustafsson <acura@allyourbase.se></span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style (see LICENSE)</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : Rickard Gustafsson <acura@allyourbase.se></span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-11"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- A stacking layout, like dishes but with the ability to resize master pane.</span>
<a name="line-14"></a><span class='hs-comment'>-- Mostly useful on small screens.</span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></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'>StackTile</span> <span class='hs-layout'>(</span>
<a name="line-19"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-20"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-21"></a> <span class='hs-conid'>StackTile</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-keyword'>where</span>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>tile</span><span class='hs-layout'>)</span>
<a name="line-25"></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'>W</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-27"></a>
<a name="line-28"></a><a name="StackTile"></a><span class='hs-comment'>-- $usage</span>
<a name="line-29"></a><a name="StackTile"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-30"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-31"></a><a name="StackTile"></a><span class='hs-comment'>-- > import XMonad.Layout.StackTile</span>
<a name="line-32"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><a name="StackTile"></a><span class='hs-comment'>-- Then edit your @layoutHook@ by adding the StackTile layout:</span>
<a name="line-34"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-35"></a><a name="StackTile"></a><span class='hs-comment'>-- > myLayout = StackTile 1 (3/100) (1/2) ||| etc..</span>
<a name="line-36"></a><a name="StackTile"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-37"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-38"></a><a name="StackTile"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-39"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-40"></a><a name="StackTile"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-41"></a><a name="StackTile"></a><span class='hs-comment'>--</span>
<a name="line-42"></a><a name="StackTile"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>StackTile</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StackTile</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-varop'>!</span><span class='hs-conid'>Rational</span> <span class='hs-varop'>!</span><span class='hs-conid'>Rational</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>)</span>
<a name="line-43"></a>
<a name="line-44"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-conid'>StackTile</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-45"></a> <span class='hs-varid'>pureLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>StackTile</span> <span class='hs-varid'>nmaster</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>frac</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span> <span class='hs-varid'>ws</span> <span class='hs-varid'>rs</span>
<a name="line-46"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span> <span class='hs-varid'>s</span>
<a name="line-47"></a> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tile</span> <span class='hs-varid'>frac</span> <span class='hs-varid'>r</span> <span class='hs-varid'>nmaster</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span>
<a name="line-48"></a>
<a name="line-49"></a> <span class='hs-varid'>pureMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>StackTile</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>frac</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-50"></a> <span class='hs-varid'>msum</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>resize</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-layout'>,</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>incmastern</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-52"></a>
<a name="line-53"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>resize</span> <span class='hs-conid'>Shrink</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StackTile</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-layout'>(</span><span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>frac</span><span class='hs-comment'>-</span><span class='hs-varid'>delta</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-varid'>resize</span> <span class='hs-conid'>Expand</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StackTile</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-layout'>(</span><span class='hs-varid'>min</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>frac</span><span class='hs-varop'>+</span><span class='hs-varid'>delta</span><span class='hs-layout'>)</span>
<a name="line-55"></a> <span class='hs-varid'>incmastern</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncMasterN</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StackTile</span> <span class='hs-layout'>(</span><span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>nmaster</span><span class='hs-varop'>+</span><span class='hs-varid'>d</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>frac</span>
<a name="line-56"></a>
<a name="line-57"></a> <span class='hs-varid'>description</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"StackTile"</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="tile"></a><span class='hs-definition'>tile</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Rectangle</span><span class='hs-keyglyph'>]</span>
<a name="line-60"></a><span class='hs-definition'>tile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>r</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-varid'>nmaster</span> <span class='hs-varop'>||</span> <span class='hs-varid'>nmaster</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-61"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>splitHorizontally</span> <span class='hs-varid'>n</span> <span class='hs-varid'>r</span>
<a name="line-62"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>splitHorizontally</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>r1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>splitVertically</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-varid'>nmaster</span><span class='hs-layout'>)</span> <span class='hs-varid'>r2</span> <span class='hs-comment'>-- two columns</span>
<a name="line-63"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>r1</span><span class='hs-layout'>,</span><span class='hs-varid'>r2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitVerticallyBy</span> <span class='hs-varid'>f</span> <span class='hs-varid'>r</span>
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