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<title>XMonad/Actions/FlexibleManipulate.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances, TypeSynonymInstances #-}</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.Actions.FlexibleManipulate</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) Michael Sloan</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : <mgsloan@gmail.com></span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : stable</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'>-- Move and resize floating windows without warping the mouse.</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-comment'>-- Based on the FlexibleResize code by Lukas Mai (mauke).</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Actions</span><span class='hs-varop'>.</span><span class='hs-conid'>FlexibleManipulate</span> <span class='hs-layout'>(</span>
<a name="line-20"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-21"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-22"></a> <span class='hs-varid'>mouseWindow</span><span class='hs-layout'>,</span> <span class='hs-varid'>discrete</span><span class='hs-layout'>,</span> <span class='hs-varid'>linear</span><span class='hs-layout'>,</span> <span class='hs-varid'>resize</span><span class='hs-layout'>,</span> <span class='hs-varid'>position</span>
<a name="line-23"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-comment'>-- $usage</span>
<a name="line-28"></a><span class='hs-comment'>-- First, add this import to your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-29"></a><span class='hs-comment'>--</span>
<a name="line-30"></a><span class='hs-comment'>-- > import qualified XMonad.Actions.FlexibleManipulate as Flex</span>
<a name="line-31"></a><span class='hs-comment'>--</span>
<a name="line-32"></a><span class='hs-comment'>-- Now set up the desired mouse binding, for example:</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>-- > , ((modm, button1), (\w -> focus w >> Flex.mouseWindow Flex.linear w))</span>
<a name="line-35"></a><span class='hs-comment'>--</span>
<a name="line-36"></a><span class='hs-comment'>-- * Flex.'linear' indicates that positions between the edges and the</span>
<a name="line-37"></a><span class='hs-comment'>-- middle indicate a combination scale\/position.</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- * Flex.'discrete' indicates that there are discrete pick</span>
<a name="line-40"></a><span class='hs-comment'>-- regions. (The window is divided by thirds for each axis.)</span>
<a name="line-41"></a><span class='hs-comment'>--</span>
<a name="line-42"></a><span class='hs-comment'>-- * Flex.'resize' performs only a resize of the window, based on which</span>
<a name="line-43"></a><span class='hs-comment'>-- quadrant the mouse is in.</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- * Flex.'position' is similar to the built-in</span>
<a name="line-46"></a><span class='hs-comment'>-- 'XMonad.Operations.mouseMoveWindow'.</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- You can also write your own function for this parameter. It should take</span>
<a name="line-49"></a><span class='hs-comment'>-- a value between 0 and 1 indicating position, and return a value indicating</span>
<a name="line-50"></a><span class='hs-comment'>-- the corresponding position if plain Flex.'linear' was used.</span>
<a name="line-51"></a><span class='hs-comment'>--</span>
<a name="line-52"></a><span class='hs-comment'>-- For detailed instructions on editing your mouse bindings, see</span>
<a name="line-53"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_mouse_bindings".</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="discrete"></a><span class='hs-definition'>discrete</span><span class='hs-layout'>,</span> <span class='hs-varid'>linear</span><span class='hs-layout'>,</span> <span class='hs-varid'>resize</span><span class='hs-layout'>,</span> <span class='hs-varid'>position</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span>
<a name="line-56"></a>
<a name="line-57"></a><span class='hs-comment'>-- | Manipulate the window based on discrete pick regions; the window</span>
<a name="line-58"></a><span class='hs-comment'>-- is divided into regions by thirds along each axis.</span>
<a name="line-59"></a><span class='hs-definition'>discrete</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-num'>0.33</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-60"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>></span> <span class='hs-num'>0.66</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-61"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0.5</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="linear"></a><span class='hs-comment'>-- | Scale\/reposition the window by factors obtained from the mouse</span>
<a name="line-64"></a><span class='hs-comment'>-- position by linear interpolation. Dragging precisely on a corner</span>
<a name="line-65"></a><span class='hs-comment'>-- resizes that corner; dragging precisely in the middle moves the</span>
<a name="line-66"></a><span class='hs-comment'>-- window without resizing; anything else is an interpolation</span>
<a name="line-67"></a><span class='hs-comment'>-- between the two.</span>
<a name="line-68"></a><span class='hs-definition'>linear</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="resize"></a><span class='hs-comment'>-- | Only resize the window, based on the window quadrant the mouse is in.</span>
<a name="line-71"></a><span class='hs-definition'>resize</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-num'>0.5</span> <span class='hs-keyword'>then</span> <span class='hs-num'>0</span> <span class='hs-keyword'>else</span> <span class='hs-num'>1</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="position"></a><span class='hs-comment'>-- | Only reposition the window.</span>
<a name="line-74"></a><span class='hs-definition'>position</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-num'>0.5</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="mouseWindow"></a><span class='hs-comment'>-- | Given an interpolation function, implement an appropriate window</span>
<a name="line-77"></a><span class='hs-comment'>-- manipulation action.</span>
<a name="line-78"></a><span class='hs-definition'>mouseWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-79"></a><span class='hs-definition'>mouseWindow</span> <span class='hs-varid'>f</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>whenX</span> <span class='hs-layout'>(</span><span class='hs-varid'>isClient</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-80"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>raiseWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span>
<a name="line-81"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>wpos</span><span class='hs-layout'>,</span> <span class='hs-varid'>wsize</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getWindowAttributes</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>winAttrs</span>
<a name="line-82"></a> <span class='hs-varid'>sh</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getWMNormalHints</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span>
<a name="line-83"></a> <span class='hs-varid'>pointer</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>queryPointer</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pointerPos</span>
<a name="line-84"></a>
<a name="line-85"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>uv</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>pointer</span> <span class='hs-comment'>-</span> <span class='hs-varid'>wpos</span><span class='hs-layout'>)</span> <span class='hs-varop'>/</span> <span class='hs-varid'>wsize</span>
<a name="line-86"></a> <span class='hs-varid'>fc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapP</span> <span class='hs-varid'>f</span> <span class='hs-varid'>uv</span>
<a name="line-87"></a> <span class='hs-varid'>mul</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapP</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-num'>2</span> <span class='hs-comment'>-</span> <span class='hs-num'>2</span> <span class='hs-varop'>*</span> <span class='hs-varid'>abs</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-num'>0.5</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>fc</span> <span class='hs-comment'>--Fudge factors: interpolation between 1 when on edge, 2 in middle</span>
<a name="line-88"></a> <span class='hs-varid'>atl</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fc</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-varid'>mul</span>
<a name="line-89"></a> <span class='hs-varid'>abr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fc</span> <span class='hs-varop'>*</span> <span class='hs-varid'>mul</span>
<a name="line-90"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>ex</span> <span class='hs-varid'>ey</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-91"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>ex</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>ey</span><span class='hs-layout'>)</span> <span class='hs-comment'>-</span> <span class='hs-varid'>pointer</span>
<a name="line-92"></a> <span class='hs-varid'>npos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>wpos</span> <span class='hs-varop'>+</span> <span class='hs-varid'>offset</span> <span class='hs-varop'>*</span> <span class='hs-varid'>atl</span>
<a name="line-93"></a> <span class='hs-varid'>nbr</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>wpos</span> <span class='hs-varop'>+</span> <span class='hs-varid'>wsize</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-varid'>offset</span> <span class='hs-varop'>*</span> <span class='hs-varid'>abr</span>
<a name="line-94"></a> <span class='hs-varid'>ntl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>minP</span> <span class='hs-layout'>(</span><span class='hs-varid'>nbr</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-num'>32</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>npos</span> <span class='hs-comment'>--minimum size</span>
<a name="line-95"></a> <span class='hs-varid'>nwidth</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applySizeHintsContents</span> <span class='hs-varid'>sh</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapP</span> <span class='hs-layout'>(</span><span class='hs-varid'>round</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Integer</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>nbr</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ntl</span><span class='hs-layout'>)</span>
<a name="line-96"></a> <span class='hs-varid'>moveResizeWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>round</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>ntl</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>round</span> <span class='hs-varop'>$</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>ntl</span><span class='hs-layout'>)</span> <span class='hs-varop'>`uncurry`</span> <span class='hs-varid'>nwidth</span>
<a name="line-97"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-98"></a> <span class='hs-layout'>(</span><span class='hs-varid'>float</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a> <span class='hs-varid'>float</span> <span class='hs-varid'>w</span>
<a name="line-101"></a>
<a name="line-102"></a> <span class='hs-keyword'>where</span>
<a name="line-103"></a> <span class='hs-varid'>pointerPos</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>px</span><span class='hs-layout'>,</span><span class='hs-varid'>py</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>px</span><span class='hs-layout'>,</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>py</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pnt</span>
<a name="line-104"></a> <span class='hs-varid'>winAttrs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WindowAttributes</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Pnt</span><span class='hs-keyglyph'>]</span>
<a name="line-105"></a> <span class='hs-varid'>winAttrs</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pairUp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>$</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>wa_x</span><span class='hs-layout'>,</span> <span class='hs-varid'>wa_y</span><span class='hs-layout'>,</span> <span class='hs-varid'>wa_width</span><span class='hs-layout'>,</span> <span class='hs-varid'>wa_height</span><span class='hs-keyglyph'>]</span>
<a name="line-106"></a>
<a name="line-107"></a>
<a name="line-108"></a><a name="Pnt"></a><span class='hs-comment'>-- I'd rather I didn't have to do this, but I hate writing component 2d math</span>
<a name="line-109"></a><a name="Pnt"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Pnt</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Double</span><span class='hs-layout'>,</span> <span class='hs-conid'>Double</span><span class='hs-layout'>)</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="pairUp"></a><span class='hs-definition'>pairUp</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-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-112"></a><span class='hs-definition'>pairUp</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-113"></a><span class='hs-definition'>pairUp</span> <span class='hs-keyglyph'>[</span><span class='hs-keyword'>_</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-114"></a><span class='hs-definition'>pairUp</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</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-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-layout'>(</span><span class='hs-varid'>pairUp</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="mapP"></a><span class='hs-definition'>mapP</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</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-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-117"></a><span class='hs-definition'>mapP</span> <span class='hs-varid'>f</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'>f</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-118"></a><a name="zipP"></a><span class='hs-definition'>zipP</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></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'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>b</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-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-119"></a><span class='hs-definition'>zipP</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>ax</span><span class='hs-layout'>,</span><span class='hs-varid'>ay</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>bx</span><span class='hs-layout'>,</span><span class='hs-varid'>by</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>ax</span> <span class='hs-varid'>bx</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ay</span> <span class='hs-varid'>by</span><span class='hs-layout'>)</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="minP"></a><span class='hs-definition'>minP</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ord</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-varid'>a</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-varid'>a</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-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-122"></a><span class='hs-definition'>minP</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipP</span> <span class='hs-varid'>min</span>
<a name="line-123"></a>
<a name="line-124"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Num</span> <span class='hs-conid'>Pnt</span> <span class='hs-keyword'>where</span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipP</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipP</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-layout'>(</span><span class='hs-varop'>*</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipP</span> <span class='hs-layout'>(</span><span class='hs-varop'>*</span><span class='hs-layout'>)</span>
<a name="line-128"></a> <span class='hs-varid'>abs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapP</span> <span class='hs-varid'>abs</span>
<a name="line-129"></a> <span class='hs-varid'>signum</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapP</span> <span class='hs-varid'>signum</span>
<a name="line-130"></a> <span class='hs-varid'>fromInteger</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-varid'>undefined</span>
<a name="line-131"></a>
<a name="line-132"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Fractional</span> <span class='hs-conid'>Pnt</span> <span class='hs-keyword'>where</span>
<a name="line-133"></a> <span class='hs-varid'>fromRational</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-varid'>undefined</span>
<a name="line-134"></a> <span class='hs-varid'>recip</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapP</span> <span class='hs-varid'>recip</span>
</pre></body>
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