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<title>XMonad/Layout/HintedTile.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE 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.HintedTile</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Peter De Wachter <pdewacht@gmail.com></span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : Peter De Wachter <pdewacht@gmail.com></span>
<a name="line-9"></a><span class='hs-comment'>-- Andrea Rossato <andrea.rossato@unibz.it></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 gapless tiled layout that attempts to obey window size hints,</span>
<a name="line-14"></a><span class='hs-comment'>-- rather than simply ignoring them.</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'>HintedTile</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'>HintedTile</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'>Orientation</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'>Alignment</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-conid'>Tall</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</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><span class='hs-comment'>-- $usage</span>
<a name="line-29"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-30"></a><span class='hs-comment'>--</span>
<a name="line-31"></a><span class='hs-comment'>-- > import XMonad.Layout.HintedTile</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-comment'>-- Then edit your @layoutHook@ by adding the HintedTile layout:</span>
<a name="line-34"></a><span class='hs-comment'>--</span>
<a name="line-35"></a><span class='hs-comment'>-- > myLayout = hintedTile Tall ||| hintedTile Wide ||| Full ||| etc..</span>
<a name="line-36"></a><span class='hs-comment'>-- > where</span>
<a name="line-37"></a><span class='hs-comment'>-- > hintedTile = HintedTile nmaster delta ratio TopLeft</span>
<a name="line-38"></a><span class='hs-comment'>-- > nmaster = 1</span>
<a name="line-39"></a><span class='hs-comment'>-- > ratio = 1/2</span>
<a name="line-40"></a><span class='hs-comment'>-- > delta = 3/100</span>
<a name="line-41"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a><span class='hs-comment'>-- Because both Xmonad and Xmonad.Layout.HintedTile define Tall,</span>
<a name="line-44"></a><span class='hs-comment'>-- you need to disambiguate Tall. If you are replacing the</span>
<a name="line-45"></a><span class='hs-comment'>-- built-in Tall with HintedTile, change @import Xmonad@ to</span>
<a name="line-46"></a><span class='hs-comment'>-- @import Xmonad hiding (Tall)@.</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook 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_the_layout_hook"</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="HintedTile"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>HintedTile</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HintedTile</span>
<a name="line-53"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>nmaster</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ number of windows in the master pane</span>
<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>delta</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>Rational</span> <span class='hs-comment'>-- ^ how much to change when resizing</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>frac</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>Rational</span> <span class='hs-comment'>-- ^ ratio between master/nonmaster panes</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignment</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>Alignment</span> <span class='hs-comment'>-- ^ Where to place windows that are smaller</span>
<a name="line-57"></a> <span class='hs-comment'>-- than their preordained rectangles.</span>
<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>orientation</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>Orientation</span> <span class='hs-comment'>-- ^ Tall or Wide (mirrored) layout?</span>
<a name="line-59"></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-60"></a>
<a name="line-61"></a><a name="Orientation"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Orientation</span>
<a name="line-62"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Wide</span> <span class='hs-comment'>-- ^ Lay out windows similarly to Mirror tiled.</span>
<a name="line-63"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Tall</span> <span class='hs-comment'>-- ^ Lay out windows similarly to tiled.</span>
<a name="line-64"></a> <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> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-layout'>)</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="Alignment"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Alignment</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TopLeft</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Center</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BottomRight</span>
<a name="line-67"></a> <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> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-layout'>)</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="instance%20LayoutClass%20HintedTile%20Window"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-conid'>HintedTile</span> <span class='hs-conid'>Window</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'>HintedTile</span> <span class='hs-layout'>{</span> <span class='hs-varid'>orientation</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>o</span><span class='hs-layout'>,</span> <span class='hs-varid'>nmaster</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nm</span><span class='hs-layout'>,</span> <span class='hs-varid'>frac</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-varid'>alignment</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>al</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-varid'>w'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-71"></a> <span class='hs-varid'>bhs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>mkAdjust</span> <span class='hs-varid'>w</span>
<a name="line-72"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>masters</span><span class='hs-layout'>,</span> <span class='hs-varid'>slaves</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitAt</span> <span class='hs-varid'>nm</span> <span class='hs-varid'>bhs</span>
<a name="line-73"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>tiler</span> <span class='hs-varid'>masters</span> <span class='hs-varid'>slaves</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyword'>where</span>
<a name="line-75"></a> <span class='hs-varid'>w</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'>w'</span>
<a name="line-76"></a> <span class='hs-varid'>tiler</span> <span class='hs-varid'>masters</span> <span class='hs-varid'>slaves</span>
<a name="line-77"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>masters</span> <span class='hs-varop'>||</span> <span class='hs-varid'>null</span> <span class='hs-varid'>slaves</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>divide</span> <span class='hs-varid'>al</span> <span class='hs-varid'>o</span> <span class='hs-layout'>(</span><span class='hs-varid'>masters</span> <span class='hs-varop'>++</span> <span class='hs-varid'>slaves</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span>
<a name="line-78"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>split</span> <span class='hs-varid'>o</span> <span class='hs-varid'>f</span> <span class='hs-varid'>r</span> <span class='hs-layout'>(</span><span class='hs-varid'>divide</span> <span class='hs-varid'>al</span> <span class='hs-varid'>o</span> <span class='hs-varid'>masters</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>divide</span> <span class='hs-varid'>al</span> <span class='hs-varid'>o</span> <span class='hs-varid'>slaves</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a> <span class='hs-varid'>pureMessage</span> <span class='hs-varid'>c</span> <span class='hs-varid'>m</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> <span class='hs-varop'>`mplus`</span>
<a name="line-81"></a> <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>
<a name="line-82"></a> <span class='hs-keyword'>where</span>
<a name="line-83"></a> <span class='hs-varid'>resize</span> <span class='hs-conid'>Shrink</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>frac</span> <span class='hs-keyglyph'>=</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-varid'>c</span> <span class='hs-comment'>-</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>c</span> <span class='hs-layout'>}</span>
<a name="line-84"></a> <span class='hs-varid'>resize</span> <span class='hs-conid'>Expand</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>frac</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>frac</span> <span class='hs-varid'>c</span> <span class='hs-varop'>+</span> <span class='hs-varid'>delta</span> <span class='hs-varid'>c</span> <span class='hs-layout'>}</span>
<a name="line-85"></a> <span class='hs-varid'>incmastern</span> <span class='hs-layout'>(</span><span class='hs-conid'>IncMasterN</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>nmaster</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>nmaster</span> <span class='hs-varid'>c</span> <span class='hs-varop'>+</span> <span class='hs-varid'>d</span> <span class='hs-layout'>}</span>
<a name="line-86"></a>
<a name="line-87"></a> <span class='hs-varid'>description</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>orientation</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="align"></a><span class='hs-definition'>align</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Alignment</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Dimension</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Dimension</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span>
<a name="line-90"></a><span class='hs-definition'>align</span> <span class='hs-conid'>TopLeft</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span>
<a name="line-91"></a><span class='hs-definition'>align</span> <span class='hs-conid'>Center</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-comment'>-</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>2</span>
<a name="line-92"></a><span class='hs-definition'>align</span> <span class='hs-conid'>BottomRight</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-comment'>-</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="divide"></a><span class='hs-comment'>-- Divide the screen vertically (horizontally) into n subrectangles</span>
<a name="line-95"></a><span class='hs-definition'>divide</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Alignment</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Orientation</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>D</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>D</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-keyglyph'>[</span><span class='hs-conid'>Rectangle</span><span class='hs-keyglyph'>]</span>
<a name="line-96"></a><span class='hs-definition'>divide</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-97"></a><span class='hs-definition'>divide</span> <span class='hs-varid'>al</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>bh</span><span class='hs-keyglyph'>]</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-keyglyph'>[</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>align</span> <span class='hs-varid'>al</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>align</span> <span class='hs-varid'>al</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-keyglyph'>]</span>
<a name="line-98"></a> <span class='hs-keyword'>where</span>
<a name="line-99"></a> <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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bh</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-layout'>)</span>
<a name="line-100"></a>
<a name="line-101"></a><span class='hs-definition'>divide</span> <span class='hs-varid'>al</span> <span class='hs-conid'>Tall</span> <span class='hs-layout'>(</span><span class='hs-varid'>bh</span><span class='hs-conop'>:</span><span class='hs-varid'>bhs</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-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-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>align</span> <span class='hs-varid'>al</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span>
<a name="line-102"></a> <span class='hs-layout'>(</span><span class='hs-varid'>divide</span> <span class='hs-varid'>al</span> <span class='hs-conid'>Tall</span> <span class='hs-varid'>bhs</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'>h</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'>h</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-103"></a> <span class='hs-keyword'>where</span>
<a name="line-104"></a> <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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bh</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-varop'>`div`</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>bhs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-105"></a>
<a name="line-106"></a><span class='hs-definition'>divide</span> <span class='hs-varid'>al</span> <span class='hs-conid'>Wide</span> <span class='hs-layout'>(</span><span class='hs-varid'>bh</span><span class='hs-conop'>:</span><span class='hs-varid'>bhs</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-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-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-layout'>(</span><span class='hs-varid'>align</span> <span class='hs-varid'>al</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span>
<a name="line-107"></a> <span class='hs-layout'>(</span><span class='hs-varid'>divide</span> <span class='hs-varid'>al</span> <span class='hs-conid'>Wide</span> <span class='hs-varid'>bhs</span> <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'>w</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'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-108"></a> <span class='hs-keyword'>where</span>
<a name="line-109"></a> <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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bh</span> <span class='hs-layout'>(</span><span class='hs-varid'>sw</span> <span class='hs-varop'>`div`</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>bhs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="split"></a><span class='hs-comment'>-- Split the screen into two rectangles, using a rational to specify the ratio</span>
<a name="line-112"></a><span class='hs-definition'>split</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Orientation</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-layout'>(</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><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</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><span class='hs-layout'>)</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-114"></a><span class='hs-definition'>split</span> <span class='hs-conid'>Tall</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-varid'>left</span> <span class='hs-varid'>right</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>leftRects</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rightRects</span>
<a name="line-115"></a> <span class='hs-keyword'>where</span>
<a name="line-116"></a> <span class='hs-varid'>leftw</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>floor</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sw</span> <span class='hs-varop'>*</span> <span class='hs-varid'>f</span>
<a name="line-117"></a> <span class='hs-varid'>leftRects</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>left</span> <span class='hs-varop'>$</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-118"></a> <span class='hs-varid'>rightx</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>maximum</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>rect_width</span><span class='hs-layout'>)</span> <span class='hs-varid'>leftRects</span>
<a name="line-119"></a> <span class='hs-varid'>rightRects</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>right</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>sx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>rightx</span><span class='hs-layout'>)</span> <span class='hs-varid'>sy</span> <span class='hs-layout'>(</span><span class='hs-varid'>sw</span> <span class='hs-comment'>-</span> <span class='hs-varid'>rightx</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span>
<a name="line-120"></a>
<a name="line-121"></a><span class='hs-definition'>split</span> <span class='hs-conid'>Wide</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span> <span class='hs-varid'>top</span> <span class='hs-varid'>bottom</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>topRects</span> <span class='hs-varop'>++</span> <span class='hs-varid'>bottomRects</span>
<a name="line-122"></a> <span class='hs-keyword'>where</span>
<a name="line-123"></a> <span class='hs-varid'>toph</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>floor</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sh</span> <span class='hs-varop'>*</span> <span class='hs-varid'>f</span>
<a name="line-124"></a> <span class='hs-varid'>topRects</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>top</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>sx</span> <span class='hs-varid'>sy</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>toph</span>
<a name="line-125"></a> <span class='hs-varid'>bottomy</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>maximum</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>rect_height</span><span class='hs-layout'>)</span> <span class='hs-varid'>topRects</span>
<a name="line-126"></a> <span class='hs-varid'>bottomRects</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bottom</span> <span class='hs-varop'>$</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'>bottomy</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'>bottomy</span><span class='hs-layout'>)</span>
</pre></body>
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