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<title>XMonad/Layout/BorderResize.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE TypeSynonymInstances, MultiParamTypeClasses, PatternGuards #-}</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.BorderResize</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Jan Vornberger 2009</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 : jan.vornberger@informatik.uni-oldenburg.de</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : not portable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This layout modifier will allow to resize windows by dragging their</span>
<a name="line-13"></a><span class='hs-comment'>-- borders with the mouse. However, it only works in layouts or modified</span>
<a name="line-14"></a><span class='hs-comment'>-- layouts that react to the 'SetGeometry' message.</span>
<a name="line-15"></a><span class='hs-comment'>-- "XMonad.Layout.WindowArranger" can be used to create such a setup,</span>
<a name="line-16"></a><span class='hs-comment'>-- but it is probably must useful in a floating layout such as</span>
<a name="line-17"></a><span class='hs-comment'>-- "XMonad.Layout.PositionStoreFloat" with which it has been mainly tested.</span>
<a name="line-18"></a><span class='hs-comment'>-- See the documentation of PositionStoreFloat for a typical usage example.</span>
<a name="line-19"></a><span class='hs-comment'>--</span>
<a name="line-20"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-21"></a>
<a name="line-22"></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'>BorderResize</span>
<a name="line-23"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage</span>
<a name="line-24"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-25"></a> <span class='hs-varid'>borderResize</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>BorderResize</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderInfo</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>Decoration</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>WindowArranger</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>XUtils</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-layout'>(</span><span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-35"></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-36"></a>
<a name="line-37"></a><span class='hs-comment'>-- $usage</span>
<a name="line-38"></a><span class='hs-comment'>-- You can use this module with the following in your</span>
<a name="line-39"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- > import XMonad.Layout.BorderResize</span>
<a name="line-42"></a><span class='hs-comment'>-- > myLayout = borderResize (... layout setup that reacts to SetGeometry ...)</span>
<a name="line-43"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="BorderBlueprint"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>BorderBlueprint</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'>Glyph</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderType</span><span class='hs-layout'>)</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="BorderType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BorderType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RightSideBorder</span>
<a name="line-49"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>LeftSideBorder</span>
<a name="line-50"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>TopSideBorder</span>
<a name="line-51"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BottomSideBorder</span>
<a name="line-52"></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>
<a name="line-53"></a><a name="BorderInfo"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BorderInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BI</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bWin</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Window</span><span class='hs-layout'>,</span>
<a name="line-54"></a> <span class='hs-varid'>bRect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span>
<a name="line-55"></a> <span class='hs-varid'>bType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BorderType</span>
<a name="line-56"></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-57"></a>
<a name="line-58"></a><a name="RectWithBorders"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>RectWithBorders</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-keyglyph'>[</span><span class='hs-conid'>BorderInfo</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="BorderResize"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BorderResize</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BR</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span><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-61"></a>
<a name="line-62"></a><a name="brBorderSize"></a><span class='hs-definition'>brBorderSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Dimension</span>
<a name="line-63"></a><span class='hs-definition'>brBorderSize</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>2</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="borderResize"></a><span class='hs-definition'>borderResize</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-conid'>BorderResize</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-66"></a><span class='hs-definition'>borderResize</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-layout'>)</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="instance%20LayoutModifier%20BorderResize%20Window"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-conid'>BorderResize</span> <span class='hs-conid'>Window</span> <span class='hs-keyword'>where</span>
<a name="line-69"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-varid'>wrsLastTime</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-71"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>correctOrder</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>wrs</span>
<a name="line-72"></a> <span class='hs-varid'>wrsCurrent</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varid'>wrs</span>
<a name="line-73"></a> <span class='hs-varid'>wrsGone</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>difference</span> <span class='hs-varid'>wrsLastTime</span> <span class='hs-varid'>wrsCurrent</span>
<a name="line-74"></a> <span class='hs-varid'>wrsAppeared</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>difference</span> <span class='hs-varid'>wrsCurrent</span> <span class='hs-varid'>wrsLastTime</span>
<a name="line-75"></a> <span class='hs-varid'>wrsStillThere</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>intersectionWith</span> <span class='hs-varid'>testIfUnchanged</span> <span class='hs-varid'>wrsLastTime</span> <span class='hs-varid'>wrsCurrent</span>
<a name="line-76"></a> <span class='hs-varid'>handleGone</span> <span class='hs-varid'>wrsGone</span>
<a name="line-77"></a> <span class='hs-varid'>wrsCreated</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>handleAppeared</span> <span class='hs-varid'>wrsAppeared</span>
<a name="line-78"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>wrsChanged</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>handleStillThere</span> <span class='hs-varid'>wrsStillThere</span>
<a name="line-79"></a> <span class='hs-varid'>wrsThisTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>union</span> <span class='hs-varid'>wrsChanged</span> <span class='hs-varid'>wrsCreated</span>
<a name="line-80"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>compileWrs</span> <span class='hs-varid'>wrsThisTime</span> <span class='hs-varid'>correctOrder</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BR</span> <span class='hs-varid'>wrsThisTime</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-comment'>-- What we return is the original wrs with the new border</span>
<a name="line-82"></a> <span class='hs-comment'>-- windows inserted at the correct positions - this way, the core</span>
<a name="line-83"></a> <span class='hs-comment'>-- will restack the borders correctly.</span>
<a name="line-84"></a> <span class='hs-comment'>-- We also return information about our borders, so that we</span>
<a name="line-85"></a> <span class='hs-comment'>-- can handle events that they receive and destroy them when</span>
<a name="line-86"></a> <span class='hs-comment'>-- they are no longer needed.</span>
<a name="line-87"></a> <span class='hs-keyword'>where</span>
<a name="line-88"></a> <span class='hs-varid'>testIfUnchanged</span> <span class='hs-varid'>entry</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>rLastTime</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>rCurrent</span> <span class='hs-keyglyph'>=</span>
<a name="line-89"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>rLastTime</span> <span class='hs-varop'>==</span> <span class='hs-varid'>rCurrent</span>
<a name="line-90"></a> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>entry</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-keyword'>else</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>rCurrent</span><span class='hs-layout'>,</span> <span class='hs-varid'>entry</span><span class='hs-layout'>)</span>
<a name="line-92"></a>
<a name="line-93"></a> <span class='hs-varid'>handleMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-varid'>wrsLastTime</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-94"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Event</span> <span class='hs-keyglyph'>=</span>
<a name="line-95"></a> <span class='hs-varid'>handleResize</span> <span class='hs-layout'>(</span><span class='hs-varid'>createBorderLookupTable</span> <span class='hs-varid'>wrsLastTime</span><span class='hs-layout'>)</span> <span class='hs-varid'>e</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-96"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>LayoutMessages</span> <span class='hs-keyglyph'>=</span>
<a name="line-97"></a> <span class='hs-varid'>handleGone</span> <span class='hs-varid'>wrsLastTime</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BR</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-layout'>)</span>
<a name="line-98"></a> <span class='hs-varid'>handleMess</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="compileWrs"></a><span class='hs-definition'>compileWrs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Window</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-101"></a><span class='hs-definition'>compileWrs</span> <span class='hs-varid'>wrsThisTime</span> <span class='hs-varid'>correctOrder</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reorder</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>wrsThisTime</span><span class='hs-layout'>)</span> <span class='hs-varid'>correctOrder</span>
<a name="line-102"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>compileWr</span> <span class='hs-varid'>wrs</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="compileWr"></a><span class='hs-definition'>compileWr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-105"></a><span class='hs-definition'>compileWr</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfos</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-106"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>borderWrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>for</span> <span class='hs-varid'>borderInfos</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>bi</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>bWin</span> <span class='hs-varid'>bi</span><span class='hs-layout'>,</span> <span class='hs-varid'>bRect</span> <span class='hs-varid'>bi</span><span class='hs-layout'>)</span>
<a name="line-107"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>borderWrs</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-108"></a>
<a name="line-109"></a><a name="handleGone"></a><span class='hs-definition'>handleGone</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-110"></a><span class='hs-definition'>handleGone</span> <span class='hs-varid'>wrsGone</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>deleteWindow</span> <span class='hs-varid'>borderWins</span>
<a name="line-111"></a> <span class='hs-keyword'>where</span>
<a name="line-112"></a> <span class='hs-varid'>borderWins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>bWin</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>.</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>elems</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wrsGone</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="handleAppeared"></a><span class='hs-definition'>handleAppeared</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span>
<a name="line-115"></a><span class='hs-definition'>handleAppeared</span> <span class='hs-varid'>wrsAppeared</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-116"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>wrsAppeared</span>
<a name="line-117"></a> <span class='hs-varid'>wrsCreated</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>handleSingleAppeared</span> <span class='hs-varid'>wrs</span>
<a name="line-118"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varid'>wrsCreated</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="handleSingleAppeared"></a><span class='hs-definition'>handleSingleAppeared</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span>
<a name="line-121"></a><span class='hs-definition'>handleSingleAppeared</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-122"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>borderBlueprints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prepareBorders</span> <span class='hs-varid'>r</span>
<a name="line-123"></a> <span class='hs-varid'>borderInfos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>createBorder</span> <span class='hs-varid'>borderBlueprints</span>
<a name="line-124"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfos</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-125"></a>
<a name="line-126"></a><a name="handleStillThere"></a><span class='hs-definition'>handleStillThere</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span>
<a name="line-127"></a><span class='hs-definition'>handleStillThere</span> <span class='hs-varid'>wrsStillThere</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>map</span> <span class='hs-varid'>handleSingleStillThere</span> <span class='hs-varid'>wrsStillThere</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="handleSingleStillThere"></a><span class='hs-definition'>handleSingleStillThere</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RectWithBorders</span>
<a name="line-130"></a><span class='hs-definition'>handleSingleStillThere</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>entry</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>entry</span>
<a name="line-131"></a><span class='hs-definition'>handleSingleStillThere</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>rCurrent</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfos</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>rCurrent</span><span class='hs-layout'>,</span> <span class='hs-varid'>updatedBorderInfos</span><span class='hs-layout'>)</span>
<a name="line-132"></a> <span class='hs-keyword'>where</span>
<a name="line-133"></a> <span class='hs-varid'>changedBorderBlueprints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prepareBorders</span> <span class='hs-varid'>rCurrent</span>
<a name="line-134"></a> <span class='hs-varid'>updatedBorderInfos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>updateBorderInfo</span> <span class='hs-varop'>.</span> <span class='hs-varid'>zip</span> <span class='hs-varid'>borderInfos</span> <span class='hs-varop'>$</span> <span class='hs-varid'>changedBorderBlueprints</span>
<a name="line-135"></a> <span class='hs-comment'>-- assuming that the four borders are always in the same order</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="updateBorderInfo"></a><span class='hs-definition'>updateBorderInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderInfo</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderBlueprint</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BorderInfo</span>
<a name="line-138"></a><span class='hs-definition'>updateBorderInfo</span> <span class='hs-layout'>(</span><span class='hs-varid'>borderInfo</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>borderInfo</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bRect</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span> <span class='hs-layout'>}</span>
<a name="line-139"></a>
<a name="line-140"></a><a name="createBorderLookupTable"></a><span class='hs-definition'>createBorderLookupTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>RectWithBorders</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-141"></a><span class='hs-definition'>createBorderLookupTable</span> <span class='hs-varid'>wrsLastTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>processSingleEntry</span> <span class='hs-varop'>$</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>wrsLastTime</span>
<a name="line-142"></a> <span class='hs-keyword'>where</span>
<a name="line-143"></a> <span class='hs-varid'>processSingleEntry</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>RectWithBorders</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-144"></a> <span class='hs-varid'>processSingleEntry</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfos</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>for</span> <span class='hs-varid'>borderInfos</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>bi</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>bWin</span> <span class='hs-varid'>bi</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>bType</span> <span class='hs-varid'>bi</span><span class='hs-layout'>,</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="prepareBorders"></a><span class='hs-definition'>prepareBorders</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'>BorderBlueprint</span><span class='hs-keyglyph'>]</span>
<a name="line-147"></a><span class='hs-definition'>prepareBorders</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-148"></a> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>wh</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>brBorderSize</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>xC_right_side</span> <span class='hs-layout'>,</span> <span class='hs-conid'>RightSideBorder</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-149"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>brBorderSize</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>xC_left_side</span> <span class='hs-layout'>,</span> <span class='hs-conid'>LeftSideBorder</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-150"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>xC_top_side</span> <span class='hs-layout'>,</span> <span class='hs-conid'>TopSideBorder</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-151"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>ht</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>xC_bottom_side</span><span class='hs-layout'>,</span> <span class='hs-conid'>BottomSideBorder</span><span class='hs-layout'>)</span>
<a name="line-152"></a> <span class='hs-keyglyph'>]</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="handleResize"></a><span class='hs-definition'>handleResize</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Event</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-155"></a><span class='hs-definition'>handleResize</span> <span class='hs-varid'>borders</span> <span class='hs-conid'>ButtonEvent</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ev_window</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ew</span><span class='hs-layout'>,</span> <span class='hs-varid'>ev_event_type</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>et</span> <span class='hs-layout'>}</span>
<a name="line-156"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>et</span> <span class='hs-varop'>==</span> <span class='hs-varid'>buttonPress</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>edge</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>ew</span> <span class='hs-varid'>borders</span> <span class='hs-keyglyph'>=</span>
<a name="line-157"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>edge</span> <span class='hs-keyword'>of</span>
<a name="line-158"></a> <span class='hs-layout'>(</span><span class='hs-conid'>RightSideBorder</span><span class='hs-layout'>,</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-159"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-160"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nwh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hx</span><span class='hs-layout'>)</span>
<a name="line-161"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>hht</span>
<a name="line-162"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-163"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hx</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-164"></a> <span class='hs-layout'>(</span><span class='hs-conid'>LeftSideBorder</span><span class='hs-layout'>,</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-165"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-166"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>min</span> <span class='hs-layout'>(</span><span class='hs-varid'>hx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hwh</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>x</span>
<a name="line-167"></a> <span class='hs-varid'>nwh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hwh</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>hx</span> <span class='hs-comment'>-</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-168"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>nx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>hht</span>
<a name="line-169"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-170"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-varid'>hx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hwh</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-171"></a> <span class='hs-layout'>(</span><span class='hs-conid'>TopSideBorder</span><span class='hs-layout'>,</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-172"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-173"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ny</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>min</span> <span class='hs-layout'>(</span><span class='hs-varid'>hy</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>y</span>
<a name="line-174"></a> <span class='hs-varid'>nht</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hht</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>hy</span> <span class='hs-comment'>-</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-175"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>ny</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>nht</span>
<a name="line-176"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-177"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'><</span> <span class='hs-varid'>hy</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-178"></a> <span class='hs-layout'>(</span><span class='hs-conid'>BottomSideBorder</span><span class='hs-layout'>,</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-179"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-180"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nht</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hy</span><span class='hs-layout'>)</span>
<a name="line-181"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>nht</span>
<a name="line-182"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-183"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hy</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-184"></a><span class='hs-definition'>handleResize</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-185"></a>
<a name="line-186"></a><a name="createBorder"></a><span class='hs-definition'>createBorder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BorderBlueprint</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderInfo</span><span class='hs-layout'>)</span>
<a name="line-187"></a><span class='hs-definition'>createBorder</span> <span class='hs-layout'>(</span><span class='hs-varid'>borderRect</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderCursor</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderType</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-188"></a> <span class='hs-varid'>borderWin</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createInputWindow</span> <span class='hs-varid'>borderCursor</span> <span class='hs-varid'>borderRect</span>
<a name="line-189"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>BI</span> <span class='hs-layout'>{</span> <span class='hs-varid'>bWin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>borderWin</span><span class='hs-layout'>,</span> <span class='hs-varid'>bRect</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>borderRect</span><span class='hs-layout'>,</span> <span class='hs-varid'>bType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>borderType</span> <span class='hs-layout'>}</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="createInputWindow"></a><span class='hs-definition'>createInputWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Window</span>
<a name="line-192"></a><span class='hs-definition'>createInputWindow</span> <span class='hs-varid'>cursorGlyph</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</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-193"></a> <span class='hs-varid'>win</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkInputWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>r</span>
<a name="line-194"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>selectInput</span> <span class='hs-varid'>d</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>exposureMask</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>buttonPressMask</span><span class='hs-layout'>)</span>
<a name="line-195"></a> <span class='hs-varid'>cursor</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>createFontCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>cursorGlyph</span>
<a name="line-196"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>defineCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>win</span> <span class='hs-varid'>cursor</span>
<a name="line-197"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>cursor</span>
<a name="line-198"></a> <span class='hs-varid'>showWindow</span> <span class='hs-varid'>win</span>
<a name="line-199"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>win</span>
<a name="line-200"></a>
<a name="line-201"></a><a name="mkInputWindow"></a><span class='hs-definition'>mkInputWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Window</span>
<a name="line-202"></a><span class='hs-definition'>mkInputWindow</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-203"></a> <span class='hs-varid'>rw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>asks</span> <span class='hs-varid'>theRoot</span>
<a name="line-204"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>screen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultScreenOfDisplay</span> <span class='hs-varid'>d</span>
<a name="line-205"></a> <span class='hs-varid'>visual</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultVisualOfScreen</span> <span class='hs-varid'>screen</span>
<a name="line-206"></a> <span class='hs-varid'>attrmask</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cWOverrideRedirect</span>
<a name="line-207"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>allocaSetWindowAttributes</span> <span class='hs-varop'>$</span>
<a name="line-208"></a> <span class='hs-keyglyph'>\</span><span class='hs-varid'>attributes</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-209"></a> <span class='hs-varid'>set_override_redirect</span> <span class='hs-varid'>attributes</span> <span class='hs-conid'>True</span>
<a name="line-210"></a> <span class='hs-varid'>createWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>rw</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-varid'>inputOnly</span> <span class='hs-varid'>visual</span> <span class='hs-varid'>attrmask</span> <span class='hs-varid'>attributes</span>
<a name="line-211"></a>
<a name="line-212"></a><a name="for"></a><span class='hs-definition'>for</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-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-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-213"></a><span class='hs-definition'>for</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>map</span>
<a name="line-214"></a>
<a name="line-215"></a><a name="reorder"></a><span class='hs-definition'>reorder</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</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-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'>b</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-216"></a><span class='hs-definition'>reorder</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>order</span> <span class='hs-keyglyph'>=</span>
<a name="line-217"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ordered</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>pickElem</span> <span class='hs-varid'>wrs</span><span class='hs-layout'>)</span> <span class='hs-varid'>order</span>
<a name="line-218"></a> <span class='hs-varid'>rest</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>order</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>wrs</span>
<a name="line-219"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>ordered</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rest</span>
<a name="line-220"></a> <span class='hs-keyword'>where</span>
<a name="line-221"></a> <span class='hs-varid'>pickElem</span> <span class='hs-varid'>list</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>e</span> <span class='hs-varid'>list</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-222"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>result</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span> <span class='hs-varid'>result</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-223"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>[]</span>
</pre></body>
</html>
