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<title>XMonad/Layout/ResizableTile.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.ResizableTile</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) MATSUYAMA Tomohiro <t.matsuyama.pub@gmail.com></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 : MATSUYAMA Tomohiro <t.matsuyama.pub@gmail.com></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'>-- More useful tiled layout that allows you to change a width\/height of window.</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a>
<a name="line-17"></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'>ResizableTile</span> <span class='hs-layout'>(</span>
<a name="line-18"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-19"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-20"></a> <span class='hs-conid'>ResizableTall</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>MirrorResize</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-21"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></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> <span class='hs-varid'>splitVertically</span><span class='hs-layout'>,</span> <span class='hs-varid'>splitHorizontallyBy</span><span class='hs-layout'>)</span>
<a name="line-24"></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-25"></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-26"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>M</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>\\</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='hs-comment'>-- $usage</span>
<a name="line-30"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-31"></a><span class='hs-comment'>--</span>
<a name="line-32"></a><span class='hs-comment'>-- > import XMonad.Layout.ResizableTile</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>-- Then edit your @layoutHook@ by adding the ResizableTile layout:</span>
<a name="line-35"></a><span class='hs-comment'>--</span>
<a name="line-36"></a><span class='hs-comment'>-- > myLayout = ResizableTall 1 (3/100) (1/2) [] ||| etc..</span>
<a name="line-37"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a><span class='hs-comment'>-- You may also want to add the following key bindings:</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- > , ((modm, xK_a), sendMessage MirrorShrink)</span>
<a name="line-46"></a><span class='hs-comment'>-- > , ((modm, xK_z), sendMessage MirrorExpand)</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- For detailed instruction on editing the key binding see:</span>
<a name="line-49"></a><span class='hs-comment'>--</span>
<a name="line-50"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_key_bindings".</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="MirrorResize"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MirrorResize</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MirrorShrink</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MirrorExpand</span> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Typeable</span>
<a name="line-53"></a><a name="instance%20Message%20MirrorResize%20data%20ResizableTall%20a%20=%20ResizableTall%20%7b%20_nmaster%20::%20Int%20--%20%5e%20number%20of%20master%20windows%20,%20_delta%20::%20Rational%20--%20%5e%20change%20when%20resizing%20by%20'Shrink',%20'Expand',%20--%20'MirrorShrink',%20'MirrorExpand'%20,%20_frac%20::%20Rational%20--%20%5e%20width%20of%20master%20,%20_slaves%20::%20%5bRational%5d%20--%20%5e%20fraction%20to%20multiply%20the%20window%20--%20height%20that%20would%20be%20given%20when%20divided%20equally.%20--%20--%20slave%20windows%20are%20assigned%20their%20modified%20--%20heights%20in%20order,%20from%20top%20to%20bottom%20--%20--%20unspecified%20values%20are%20replaced%20by%201%20%7d%20deriving%20(Show,%20Read)%20instance%20LayoutClass%20ResizableTall%20a"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Message</span> <span class='hs-conid'>MirrorResize</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="ResizableTall"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ResizableTall</span>
<a name="line-56"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_nmaster</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ number of master windows</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_delta</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</span> <span class='hs-comment'>-- ^ change when resizing by 'Shrink', 'Expand',</span>
<a name="line-58"></a> <span class='hs-comment'>-- 'MirrorShrink', 'MirrorExpand'</span>
<a name="line-59"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_frac</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</span> <span class='hs-comment'>-- ^ width of master</span>
<a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_slaves</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Rational</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ fraction to multiply the window</span>
<a name="line-61"></a> <span class='hs-comment'>-- height that would be given when divided equally.</span>
<a name="line-62"></a> <span class='hs-comment'>--</span>
<a name="line-63"></a> <span class='hs-comment'>-- slave windows are assigned their modified</span>
<a name="line-64"></a> <span class='hs-comment'>-- heights in order, from top to bottom</span>
<a name="line-65"></a> <span class='hs-comment'>--</span>
<a name="line-66"></a> <span class='hs-comment'>-- unspecified values are replaced by 1</span>
<a name="line-67"></a> <span class='hs-layout'>}</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-68"></a>
<a name="line-69"></a><a name="instance%20LayoutClass%20ResizableTall%20a"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-70"></a> <span class='hs-varid'>doLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>nmaster</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>frac</span> <span class='hs-varid'>mfrac</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span>
<a name="line-71"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>-></span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span>
<a name="line-72"></a> <span class='hs-varid'>ap</span> <span class='hs-varid'>zip</span> <span class='hs-layout'>(</span><span class='hs-varid'>tile</span> <span class='hs-varid'>frac</span> <span class='hs-layout'>(</span><span class='hs-varid'>mfrac</span> <span class='hs-varop'>++</span> <span class='hs-varid'>repeat</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-varid'>nmaster</span> <span class='hs-varop'>.</span> <span class='hs-varid'>length</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span>
<a name="line-73"></a> <span class='hs-varid'>handleMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>frac</span> <span class='hs-varid'>mfrac</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-74"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span>
<a name="line-75"></a> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>keys</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>floating</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span>
<a name="line-76"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ms</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unfloat</span> <span class='hs-varid'>fs</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>handleMesg</span>
<a name="line-77"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>handleMesg</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <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-78"></a> <span class='hs-layout'>,</span><span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mresize</span> <span class='hs-varid'>x</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</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-79"></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-80"></a> <span class='hs-varid'>unfloat</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-varid'>s</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>fs</span>
<a name="line-81"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Nothing</span>
<a name="line-82"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>up</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>up</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>fs</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>down</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>down</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>fs</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-84"></a> <span class='hs-varid'>resize</span> <span class='hs-conid'>Shrink</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ResizableTall</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'>$</span> <span class='hs-varid'>frac</span><span class='hs-comment'>-</span><span class='hs-varid'>delta</span><span class='hs-layout'>)</span> <span class='hs-varid'>mfrac</span>
<a name="line-85"></a> <span class='hs-varid'>resize</span> <span class='hs-conid'>Expand</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-layout'>(</span><span class='hs-varid'>min</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>frac</span><span class='hs-varop'>+</span><span class='hs-varid'>delta</span><span class='hs-layout'>)</span> <span class='hs-varid'>mfrac</span>
<a name="line-86"></a> <span class='hs-varid'>mresize</span> <span class='hs-conid'>MirrorShrink</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mresize'</span> <span class='hs-varid'>s</span> <span class='hs-varid'>delta</span>
<a name="line-87"></a> <span class='hs-varid'>mresize</span> <span class='hs-conid'>MirrorExpand</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mresize'</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-comment'>-</span><span class='hs-varid'>delta</span><span class='hs-layout'>)</span>
<a name="line-88"></a> <span class='hs-varid'>mresize'</span> <span class='hs-varid'>s</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>up</span> <span class='hs-varid'>s</span>
<a name="line-89"></a> <span class='hs-varid'>total</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span> <span class='hs-varop'>+</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>down</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span>
<a name="line-90"></a> <span class='hs-varid'>pos</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-layout'>(</span><span class='hs-varid'>nmaster</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-layout'>(</span><span class='hs-varid'>total</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>n</span>
<a name="line-91"></a> <span class='hs-varid'>mfrac'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifymfrac</span> <span class='hs-layout'>(</span><span class='hs-varid'>mfrac</span> <span class='hs-varop'>++</span> <span class='hs-varid'>repeat</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>d</span> <span class='hs-varid'>pos</span>
<a name="line-92"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>ResizableTall</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>frac</span> <span class='hs-varop'>$</span> <span class='hs-varid'>take</span> <span class='hs-varid'>total</span> <span class='hs-varid'>mfrac'</span>
<a name="line-93"></a> <span class='hs-varid'>modifymfrac</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-94"></a> <span class='hs-varid'>modifymfrac</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span><span class='hs-conop'>:</span><span class='hs-varid'>fx</span><span class='hs-layout'>)</span> <span class='hs-varid'>d</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span><span class='hs-varop'>+</span><span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>fx</span>
<a name="line-95"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-conop'>:</span> <span class='hs-varid'>modifymfrac</span> <span class='hs-varid'>fx</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-96"></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'>ResizableTall</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> <span class='hs-varid'>mfrac</span>
<a name="line-97"></a> <span class='hs-varid'>description</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ResizableTall"</span>
<a name="line-98"></a>
<a name="line-99"></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-keyglyph'>[</span><span class='hs-conid'>Rational</span><span class='hs-keyglyph'>]</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-100"></a><span class='hs-definition'>tile</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mf</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-101"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>splitVertically</span> <span class='hs-varid'>mf</span> <span class='hs-varid'>n</span> <span class='hs-varid'>r</span>
<a name="line-102"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>splitVertically</span> <span class='hs-varid'>mf</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'>drop</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>mf</span><span class='hs-layout'>)</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-103"></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'>splitHorizontallyBy</span> <span class='hs-varid'>f</span> <span class='hs-varid'>r</span>
<a name="line-104"></a>
<a name="line-105"></a><a name="splitVertically"></a><span class='hs-definition'>splitVertically</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RealFrac</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>r</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</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-106"></a><span class='hs-definition'>splitVertically</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>r</span><span class='hs-keyglyph'>]</span>
<a name="line-107"></a><span class='hs-definition'>splitVertically</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><</span> <span class='hs-num'>2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>r</span><span class='hs-keyglyph'>]</span>
<a name="line-108"></a><span class='hs-definition'>splitVertically</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span><span class='hs-conop'>:</span><span class='hs-varid'>fx</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>smallh</span> <span class='hs-conop'>:</span>
<a name="line-109"></a> <span class='hs-varid'>splitVertically</span> <span class='hs-varid'>fx</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-layout'>(</span><span class='hs-varid'>sy</span><span class='hs-varop'>+</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>smallh</span><span class='hs-layout'>)</span> <span class='hs-varid'>sw</span> <span class='hs-layout'>(</span><span class='hs-varid'>sh</span><span class='hs-comment'>-</span><span class='hs-varid'>smallh</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-110"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>smallh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-varid'>sh</span> <span class='hs-layout'>(</span><span class='hs-varid'>floor</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>sh</span> <span class='hs-varop'>`div`</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-comment'>--hmm, this is a fold or map.</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="splitHorizontallyBy"></a><span class='hs-definition'>splitHorizontallyBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RealFrac</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span>
<a name="line-113"></a><span class='hs-definition'>splitHorizontallyBy</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-114"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>leftw</span> <span class='hs-varid'>sh</span>
<a name="line-115"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>sx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>leftw</span><span class='hs-layout'>)</span> <span class='hs-varid'>sy</span> <span class='hs-layout'>(</span><span class='hs-varid'>sw</span><span class='hs-comment'>-</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>leftw</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span>
<a name="line-116"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>leftw</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>floor</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sw</span> <span class='hs-varop'>*</span> <span class='hs-varid'>f</span>
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