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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable, FlexibleContexts, FlexibleInstances, MultiParamTypeClasses, PatternGuards, 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.Decoration</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2007 Andrea Rossato, 2009 Jan Vornberger</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see xmonad/LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : andrea.rossato@unibz.it</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- A layout modifier and a class for easily creating decorated</span>
<a name="line-13"></a><span class='hs-comment'>-- layouts.</span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-15"></a>
<a name="line-16"></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'>Decoration</span>
<a name="line-17"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage:</span>
<a name="line-18"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-19"></a> <span class='hs-varid'>decoration</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Theme</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>defaultTheme</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Decoration</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>DecorationMsg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>DecorationStyle</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>DefaultDecoration</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Shrinker</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'>DefaultShrinker</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>shrinkText</span><span class='hs-layout'>,</span> <span class='hs-conid'>CustomShrink</span> <span class='hs-layout'>(</span> <span class='hs-conid'>CustomShrink</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>shrinkWhile</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isInStack</span><span class='hs-layout'>,</span> <span class='hs-varid'>isVisible</span><span class='hs-layout'>,</span> <span class='hs-varid'>isInvisible</span><span class='hs-layout'>,</span> <span class='hs-varid'>isWithin</span><span class='hs-layout'>,</span> <span class='hs-varid'>fi</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>findWindowByDecoration</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <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'>LayoutModifier</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>DecorationState</span><span class='hs-layout'>,</span> <span class='hs-conid'>OrigWin</span>
<a name="line-31"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-32"></a>
<a name="line-33"></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-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span><span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-37"></a>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-39"></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-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Hooks</span><span class='hs-varop'>.</span><span class='hs-conid'>UrgencyHook</span>
<a name="line-41"></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'>LayoutModifier</span>
<a name="line-42"></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> <span class='hs-layout'>(</span><span class='hs-conid'>WindowArrangerMsg</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>diff</span><span class='hs-layout'>,</span> <span class='hs-varid'>listFromList</span><span class='hs-layout'>)</span>
<a name="line-43"></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'>NamedWindows</span> <span class='hs-layout'>(</span><span class='hs-varid'>getName</span><span class='hs-layout'>)</span>
<a name="line-44"></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'>Invisible</span>
<a name="line-45"></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-46"></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'>Font</span>
<a name="line-47"></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'>Image</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-comment'>-- $usage</span>
<a name="line-50"></a><span class='hs-comment'>-- This module is intended for layout developers, who want to decorate</span>
<a name="line-51"></a><span class='hs-comment'>-- their layouts. End users will not find here very much for them.</span>
<a name="line-52"></a><span class='hs-comment'>--</span>
<a name="line-53"></a><span class='hs-comment'>-- For examples of 'DecorationStyle' instances you can have a look at</span>
<a name="line-54"></a><span class='hs-comment'>-- "XMonad.Layout.SimpleDecoration", "XMonad.Layout.Tabbed",</span>
<a name="line-55"></a><span class='hs-comment'>-- "XMonad.Layout.DwmStyle", or "XMonad.Layout.TabBarDecoration".</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="decoration"></a><span class='hs-comment'>-- | A layout modifier that, with a 'Shrinker', a 'Theme', a</span>
<a name="line-58"></a><span class='hs-comment'>-- 'DecorationStyle', and a layout, will decorate this layout</span>
<a name="line-59"></a><span class='hs-comment'>-- according to the decoration style provided.</span>
<a name="line-60"></a><span class='hs-comment'>--</span>
<a name="line-61"></a><span class='hs-comment'>-- For some usage examples see "XMonad.Layout.DecorationMadness".</span>
<a name="line-62"></a><span class='hs-definition'>decoration</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span>
<a name="line-63"></a> <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-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-64"></a><span class='hs-definition'>decoration</span> <span class='hs-varid'>s</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="Theme"></a><span class='hs-comment'>-- | A 'Theme' is a record of colors, font etc., to customize a</span>
<a name="line-67"></a><a name="Theme"></a><span class='hs-comment'>-- 'DecorationStyle'.</span>
<a name="line-68"></a><a name="Theme"></a><span class='hs-comment'>--</span>
<a name="line-69"></a><a name="Theme"></a><span class='hs-comment'>-- For a collection of 'Theme's see "XMonad.Util.Themes"</span>
<a name="line-70"></a><a name="Theme"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>=</span>
<a name="line-71"></a> <span class='hs-conid'>Theme</span> <span class='hs-layout'>{</span> <span class='hs-varid'>activeColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the active window</span>
<a name="line-72"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the inactive window</span>
<a name="line-73"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the urgent window</span>
<a name="line-74"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>activeBorderColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the border of the active window</span>
<a name="line-75"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveBorderColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the border of the inactive window</span>
<a name="line-76"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentBorderColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the border of the urgent window</span>
<a name="line-77"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>activeTextColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the text of the active window</span>
<a name="line-78"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveTextColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the text of the inactive window</span>
<a name="line-79"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentTextColor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Color of the text of the urgent window</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fontName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Font name</span>
<a name="line-81"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decoWidth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Dimension</span> <span class='hs-comment'>-- ^ Maximum width of the decorations (if supported by the 'DecorationStyle')</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decoHeight</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Dimension</span> <span class='hs-comment'>-- ^ Height of the decorations</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>windowTitleAddons</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>Align</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Extra text to appear in a window's title bar.</span>
<a name="line-84"></a> <span class='hs-comment'>-- Refer to for a use "XMonad.Layout.ImageButtonDecoration"</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>windowTitleIcons</span> <span class='hs-keyglyph'>::</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'>Bool</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Placement</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Extra icons to appear in a window's title bar.</span>
<a name="line-86"></a> <span class='hs-comment'>-- Inner @[Bool]@ is a row in a icon bitmap.</span>
<a name="line-87"></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-88"></a>
<a name="line-89"></a><a name="defaultTheme"></a><span class='hs-comment'>-- | The default xmonad 'Theme'.</span>
<a name="line-90"></a><span class='hs-definition'>defaultTheme</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Theme</span>
<a name="line-91"></a><span class='hs-definition'>defaultTheme</span> <span class='hs-keyglyph'>=</span>
<a name="line-92"></a> <span class='hs-conid'>Theme</span> <span class='hs-layout'>{</span> <span class='hs-varid'>activeColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#999999"</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#666666"</span>
<a name="line-94"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#FFFF00"</span>
<a name="line-95"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>activeBorderColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#FFFFFF"</span>
<a name="line-96"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveBorderColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#BBBBBB"</span>
<a name="line-97"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentBorderColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"##00FF00"</span>
<a name="line-98"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>activeTextColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#FFFFFF"</span>
<a name="line-99"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inactiveTextColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#BFBFBF"</span>
<a name="line-100"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>urgentTextColor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"#FF0000"</span>
<a name="line-101"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fontName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"xft:Sans:size=10"</span>
<a name="line-102"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decoWidth</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>200</span>
<a name="line-103"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>decoHeight</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>20</span>
<a name="line-104"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>windowTitleAddons</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-105"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>windowTitleIcons</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-106"></a> <span class='hs-layout'>}</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="DecorationMsg"></a><span class='hs-comment'>-- | A 'Decoration' layout modifier will handle 'SetTheme', a message</span>
<a name="line-109"></a><a name="DecorationMsg"></a><span class='hs-comment'>-- to dynamically change the decoration 'Theme'.</span>
<a name="line-110"></a><a name="DecorationMsg"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DecorationMsg</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SetTheme</span> <span class='hs-conid'>Theme</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Typeable</span> <span class='hs-layout'>)</span>
<a name="line-111"></a><a name="instance%20DecorationStyle%20ds%20a"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Message</span> <span class='hs-conid'>DecorationMsg</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="DecorationState"></a><span class='hs-comment'>-- | The 'Decoration' state component, where the list of decorated</span>
<a name="line-114"></a><a name="DecorationState"></a><span class='hs-comment'>-- window's is zipped with a list of decoration. A list of decoration</span>
<a name="line-115"></a><a name="DecorationState"></a><span class='hs-comment'>-- is a list of tuples, a 'Maybe' 'Window' and a 'Maybe Rectangle'.</span>
<a name="line-116"></a><a name="DecorationState"></a><span class='hs-comment'>-- The 'Window' will be displayed only if the rectangle is of type</span>
<a name="line-117"></a><a name="DecorationState"></a><span class='hs-comment'>-- 'Just'.</span>
<a name="line-118"></a><a name="DecorationState"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DecorationState</span> <span class='hs-keyglyph'>=</span>
<a name="line-119"></a> <span class='hs-conid'>DS</span> <span class='hs-layout'>{</span> <span class='hs-varid'>decos</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-conid'>DecoWin</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-120"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>font</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>XMonadFont</span>
<a name="line-121"></a> <span class='hs-layout'>}</span>
<a name="line-122"></a><a name="DecoWin"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>DecoWin</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</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>
<a name="line-123"></a><a name="OrigWin"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>OrigWin</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>
<a name="line-124"></a>
<a name="line-125"></a><a name="Decoration"></a><span class='hs-comment'>-- | The 'Decoration' 'LayoutModifier'. This data type is an instance</span>
<a name="line-126"></a><a name="Decoration"></a><span class='hs-comment'>-- of the 'LayoutModifier' class. This data type will be passed,</span>
<a name="line-127"></a><a name="Decoration"></a><span class='hs-comment'>-- together with a layout, to the 'ModifiedLayout' type constructor</span>
<a name="line-128"></a><a name="Decoration"></a><span class='hs-comment'>-- to modify the layout by adding decorations according to a</span>
<a name="line-129"></a><a name="Decoration"></a><span class='hs-comment'>-- 'DecorationStyle'.</span>
<a name="line-130"></a><a name="Decoration"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Decoration</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-131"></a> <span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>Invisible</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>DecorationState</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Theme</span> <span class='hs-layout'>(</span><span class='hs-varid'>ds</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-132"></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>
<a name="line-133"></a>
<a name="line-134"></a><a name="DecorationStyle"></a><span class='hs-comment'>-- | The 'DecorationStyle' class, defines methods used in the</span>
<a name="line-135"></a><a name="DecorationStyle"></a><span class='hs-comment'>-- implementation of the 'Decoration' 'LayoutModifier' instance. A</span>
<a name="line-136"></a><a name="DecorationStyle"></a><span class='hs-comment'>-- type instance of this class is passed to the 'Decoration' type in</span>
<a name="line-137"></a><a name="DecorationStyle"></a><span class='hs-comment'>-- order to decorate a layout, by using these methods.</span>
<a name="line-138"></a><a name="DecorationStyle"></a><span class='hs-keyword'>class</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-layout'>(</span><span class='hs-varid'>ds</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-layout'>(</span><span class='hs-varid'>ds</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</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-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-139"></a>
<a name="line-140"></a> <span class='hs-comment'>-- | The description that the 'Decoration' modifier will display.</span>
<a name="line-141"></a> <span class='hs-varid'>describeDeco</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-142"></a> <span class='hs-varid'>describeDeco</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>show</span> <span class='hs-varid'>ds</span>
<a name="line-143"></a>
<a name="line-144"></a> <span class='hs-comment'>-- | Shrink the window's rectangle when applying a decoration.</span>
<a name="line-145"></a> <span class='hs-varid'>shrink</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span>
<a name="line-146"></a> <span class='hs-varid'>shrink</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>dh</span><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'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</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'>dh</span><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-comment'>-</span> <span class='hs-varid'>dh</span><span class='hs-layout'>)</span>
<a name="line-147"></a>
<a name="line-148"></a> <span class='hs-comment'>-- | The decoration event hook</span>
<a name="line-149"></a> <span class='hs-varid'>decorationEventHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DecorationState</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-150"></a> <span class='hs-varid'>decorationEventHook</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>handleMouseFocusDrag</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span>
<a name="line-151"></a>
<a name="line-152"></a> <span class='hs-comment'>-- | A hook that can be used to catch the cases when the user</span>
<a name="line-153"></a> <span class='hs-comment'>-- clicks on the decoration. If you return True here, the click event</span>
<a name="line-154"></a> <span class='hs-comment'>-- will be considered as dealt with and no further processing will take place.</span>
<a name="line-155"></a> <span class='hs-varid'>decorationCatchClicksHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span>
<a name="line-156"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Window</span>
<a name="line-157"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ distance from the left where the click happened on the decoration</span>
<a name="line-158"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ distance from the right where the click happened on the decoration</span>
<a name="line-159"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Bool</span>
<a name="line-160"></a> <span class='hs-varid'>decorationCatchClicksHook</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</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'>False</span>
<a name="line-161"></a>
<a name="line-162"></a> <span class='hs-comment'>-- | This hook is called while a window is dragged using the decoration.</span>
<a name="line-163"></a> <span class='hs-comment'>-- The hook can be overwritten if a different way of handling the dragging</span>
<a name="line-164"></a> <span class='hs-comment'>-- is required.</span>
<a name="line-165"></a> <span class='hs-varid'>decorationWhileDraggingHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</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'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-166"></a> <span class='hs-varid'>decorationWhileDraggingHook</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ex</span> <span class='hs-varid'>ey</span> <span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>handleDraggingInProgress</span> <span class='hs-varid'>ex</span> <span class='hs-varid'>ey</span> <span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-167"></a>
<a name="line-168"></a> <span class='hs-comment'>-- | This hoook is called after a window has been dragged using the decoration.</span>
<a name="line-169"></a> <span class='hs-varid'>decorationAfterDraggingHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</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'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-170"></a> <span class='hs-varid'>decorationAfterDraggingHook</span> <span class='hs-sel'>_ds</span> <span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span> <span class='hs-sel'>_r</span><span class='hs-layout'>)</span> <span class='hs-sel'>_decoWin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>focus</span> <span class='hs-varid'>mainw</span>
<a name="line-171"></a>
<a name="line-172"></a> <span class='hs-comment'>-- | The pure version of the main method, 'decorate'.</span>
<a name="line-173"></a> <span class='hs-varid'>pureDecoration</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</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'>Rectangle</span>
<a name="line-174"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</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-layout'>,</span><span class='hs-conid'>Rectangle</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-conid'>Rectangle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Rectangle</span>
<a name="line-175"></a> <span class='hs-varid'>pureDecoration</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ht</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</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> <span class='hs-keyword'>if</span> <span class='hs-varid'>isInStack</span> <span class='hs-varid'>s</span> <span class='hs-varid'>w</span> <span class='hs-varop'>&&</span> <span class='hs-layout'>(</span><span class='hs-varid'>ht</span> <span class='hs-varop'><</span> <span class='hs-varid'>ht'</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</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>
<a name="line-177"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-178"></a>
<a name="line-179"></a> <span class='hs-comment'>-- | Given the theme's decoration width and height, the screen</span>
<a name="line-180"></a> <span class='hs-comment'>-- rectangle, the windows stack, the list of windows and</span>
<a name="line-181"></a> <span class='hs-comment'>-- rectangles returned by the underlying layout and window to be</span>
<a name="line-182"></a> <span class='hs-comment'>-- decorated, tupled with its rectangle, produce a 'Just'</span>
<a name="line-183"></a> <span class='hs-comment'>-- 'Rectangle' or 'Nothing' if the window is not to be decorated.</span>
<a name="line-184"></a> <span class='hs-varid'>decorate</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</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'>Rectangle</span>
<a name="line-185"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</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-layout'>,</span><span class='hs-conid'>Rectangle</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-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'>Maybe</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span>
<a name="line-186"></a> <span class='hs-varid'>decorate</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-varid'>r</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>wr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pureDecoration</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-varid'>r</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>wr</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="DefaultDecoration"></a><span class='hs-comment'>-- | The default 'DecorationStyle', with just the default methods'</span>
<a name="line-189"></a><a name="DefaultDecoration"></a><span class='hs-comment'>-- implementations.</span>
<a name="line-190"></a><a name="DefaultDecoration"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DefaultDecoration</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DefaultDecoration</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-layout'>)</span>
<a name="line-191"></a><a name="instance%20DecorationStyle%20DefaultDecoration%20a%20--%20%7c%20The%20long%20'LayoutModifier'%20instance%20for%20the%20'Decoration'%20type.%20--%20--%20In%20'redoLayout'%20we%20check%20the%20state:%20if%20there%20is%20no%20state%20we%20--%20initialize%20it.%20--%20--%20The%20state%20is%20'diff'ed%20against%20the%20list%20of%20windows%20produced%20by%20the%20--%20underlying%20layout:%20removed%20windows%20get%20deleted%20and%20new%20ones%20--%20decorated%20by%20'createDecos',%20which%20will%20call%20'decorate'%20to%20decide%20if%20--%20a%20window%20must%20be%20given%20a%20'Rectangle',%20in%20which%20case%20a%20decoration%20--%20window%20will%20be%20created.%20--%20--%20After%20that%20we%20resync%20the%20updated%20state%20with%20the%20windows'%20list%20and%20--%20then%20we%20process%20the%20resynced%20stated%20(as%20we%20do%20with%20a%20new%20state).%20--%20--%20First%20we%20map%20the%20decoration%20windows,%20we%20update%20each%20decoration%20to%20--%20reflect%20any%20decorated%20window's%20change,%20and%20we%20insert,%20in%20the%20list%20--%20of%20windows%20and%20rectangles%20returned%20by%20the%20underlying%20layout,%20the%20--%20decoration%20for%20each%20window.%20This%20way%20xmonad%20will%20restack%20the%20--%20decorations%20and%20their%20windows%20accordingly.%20At%20the%20end%20we%20remove%20--%20invisible%5c/stacked%20windows.%20--%20--%20Message%20handling%20is%20quite%20simple:%20when%20needed%20we%20release%20the%20state%20--%20component%20of%20the%20'Decoration'%20'LayoutModifier'.%20Otherwise%20we%20call%20--%20'handleEvent',%20which%20will%20call%20the%20appropriate%20'DecorationStyle'%20--%20methods%20to%20perform%20its%20tasks.%20instance%20(DecorationStyle%20ds%20Window,%20Shrinker%20s)%20=%3e%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>DecorationStyle</span> <span class='hs-conid'>DefaultDecoration</span> <span class='hs-varid'>a</span>
<a name="line-192"></a>
<a name="line-193"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- | The long 'LayoutModifier' instance for the 'Decoration' type.</span>
<a name="line-194"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>--</span>
<a name="line-195"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- In 'redoLayout' we check the state: if there is no state we</span>
<a name="line-196"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- initialize it.</span>
<a name="line-197"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>--</span>
<a name="line-198"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- The state is 'diff'ed against the list of windows produced by the</span>
<a name="line-199"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- underlying layout: removed windows get deleted and new ones</span>
<a name="line-200"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- decorated by 'createDecos', which will call 'decorate' to decide if</span>
<a name="line-201"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- a window must be given a 'Rectangle', in which case a decoration</span>
<a name="line-202"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- window will be created.</span>
<a name="line-203"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>--</span>
<a name="line-204"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- After that we resync the updated state with the windows' list and</span>
<a name="line-205"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- then we process the resynced stated (as we do with a new state).</span>
<a name="line-206"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>--</span>
<a name="line-207"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- First we map the decoration windows, we update each decoration to</span>
<a name="line-208"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- reflect any decorated window's change, and we insert, in the list</span>
<a name="line-209"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- of windows and rectangles returned by the underlying layout, the</span>
<a name="line-210"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- decoration for each window. This way xmonad will restack the</span>
<a name="line-211"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- decorations and their windows accordingly. At the end we remove</span>
<a name="line-212"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- invisible\/stacked windows.</span>
<a name="line-213"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>--</span>
<a name="line-214"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- Message handling is quite simple: when needed we release the state</span>
<a name="line-215"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- component of the 'Decoration' 'LayoutModifier'. Otherwise we call</span>
<a name="line-216"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- 'handleEvent', which will call the appropriate 'DecorationStyle'</span>
<a name="line-217"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-comment'>-- methods to perform its tasks.</span>
<a name="line-218"></a><a name="instance%20LayoutModifier%20(Decoration%20ds%20s)%20Window"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-conid'>Window</span> <span class='hs-keyword'>where</span>
<a name="line-219"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-220"></a> <span class='hs-varid'>releaseResources</span> <span class='hs-varid'>s</span>
<a name="line-221"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span>
<a name="line-222"></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-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-223"></a>
<a name="line-224"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-varid'>st</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-varid'>sc</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>stack</span><span class='hs-layout'>)</span> <span class='hs-varid'>wrs</span>
<a name="line-225"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>I</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>initState</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>stack</span> <span class='hs-varid'>wrs</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>processState</span>
<a name="line-226"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>I</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>decos</span> <span class='hs-varid'>s</span>
<a name="line-227"></a> <span class='hs-layout'>(</span><span class='hs-varid'>d</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-varid'>curry</span> <span class='hs-varid'>diff</span> <span class='hs-layout'>(</span><span class='hs-varid'>get_ws</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ws</span>
<a name="line-228"></a> <span class='hs-varid'>toDel</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>todel</span> <span class='hs-varid'>d</span> <span class='hs-varid'>dwrs</span>
<a name="line-229"></a> <span class='hs-varid'>toAdd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toadd</span> <span class='hs-varid'>a</span> <span class='hs-varid'>wrs</span>
<a name="line-230"></a> <span class='hs-varid'>deleteDecos</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>toDel</span><span class='hs-layout'>)</span>
<a name="line-231"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ndwrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span> <span class='hs-varid'>toAdd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>repeat</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-232"></a> <span class='hs-varid'>ndecos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>resync</span> <span class='hs-layout'>(</span><span class='hs-varid'>ndwrs</span> <span class='hs-varop'>++</span> <span class='hs-varid'>del_dwrs</span> <span class='hs-varid'>d</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-varid'>wrs</span>
<a name="line-233"></a> <span class='hs-varid'>processState</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-layout'>{</span><span class='hs-varid'>decos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ndecos</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-234"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</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-235"></a>
<a name="line-236"></a> <span class='hs-keyword'>where</span>
<a name="line-237"></a> <span class='hs-varid'>ws</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-238"></a> <span class='hs-varid'>get_w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span>
<a name="line-239"></a> <span class='hs-varid'>get_ws</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>get_w</span>
<a name="line-240"></a> <span class='hs-varid'>del_dwrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listFromList</span> <span class='hs-varid'>get_w</span> <span class='hs-varid'>notElem</span>
<a name="line-241"></a> <span class='hs-varid'>find_dw</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>.</span> <span class='hs-varid'>flip</span> <span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span>
<a name="line-242"></a> <span class='hs-varid'>todel</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>flip</span> <span class='hs-varid'>elem</span> <span class='hs-varid'>d</span> <span class='hs-varop'>.</span> <span class='hs-varid'>get_w</span><span class='hs-layout'>)</span>
<a name="line-243"></a> <span class='hs-varid'>toadd</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>flip</span> <span class='hs-varid'>elem</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>)</span>
<a name="line-244"></a>
<a name="line-245"></a> <span class='hs-varid'>check_dwr</span> <span class='hs-varid'>dwr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>dwr</span> <span class='hs-keyword'>of</span>
<a name="line-246"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>dr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>dw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createDecoWindow</span> <span class='hs-varid'>t</span> <span class='hs-varid'>dr</span>
<a name="line-247"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dw</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>dr</span><span class='hs-layout'>)</span>
<a name="line-248"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>dwr</span>
<a name="line-249"></a>
<a name="line-250"></a> <span class='hs-varid'>resync</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-251"></a> <span class='hs-varid'>resync</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</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-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>w</span> <span class='hs-varop'>`elemIndex`</span> <span class='hs-varid'>get_ws</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-252"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>dr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>decorate</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>(</span><span class='hs-varid'>decoWidth</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>decoHeight</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>stack</span> <span class='hs-varid'>wrs</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>
<a name="line-253"></a> <span class='hs-varid'>dwr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>check_dwr</span> <span class='hs-layout'>(</span><span class='hs-varid'>find_dw</span> <span class='hs-varid'>i</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>dr</span><span class='hs-layout'>)</span>
<a name="line-254"></a> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>resync</span> <span class='hs-varid'>d</span> <span class='hs-varid'>xs</span>
<a name="line-255"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</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><span class='hs-varid'>dwr</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>dwrs</span>
<a name="line-256"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>resync</span> <span class='hs-varid'>d</span> <span class='hs-varid'>xs</span>
<a name="line-257"></a>
<a name="line-258"></a> <span class='hs-comment'>-- We drop any windows that are *precisely* stacked underneath</span>
<a name="line-259"></a> <span class='hs-comment'>-- another window: these must be intended to be tabbed!</span>
<a name="line-260"></a> <span class='hs-varid'>remove_stacked</span> <span class='hs-varid'>rs</span> <span class='hs-layout'>(</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-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-261"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>r</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>remove_stacked</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>xs</span>
<a name="line-262"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</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-conop'>:</span> <span class='hs-varid'>remove_stacked</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-263"></a> <span class='hs-varid'>remove_stacked</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-264"></a>
<a name="line-265"></a> <span class='hs-varid'>insert_dwr</span> <span class='hs-layout'>(</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><span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dw</span><span class='hs-layout'>,</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>dw</span><span class='hs-layout'>,</span><span class='hs-varid'>dr</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>shrink</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>dr</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span>
<a name="line-266"></a> <span class='hs-varid'>insert_dwr</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-layout'>,</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-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span>
<a name="line-267"></a>
<a name="line-268"></a> <span class='hs-varid'>dwrs_to_wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>remove_stacked</span> <span class='hs-conid'>[]</span> <span class='hs-varop'>.</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>insert_dwr</span> <span class='hs-conid'>[]</span>
<a name="line-269"></a>
<a name="line-270"></a> <span class='hs-varid'>processState</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>ndwrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>decos</span> <span class='hs-varid'>s</span>
<a name="line-271"></a> <span class='hs-varid'>showDecos</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>ndwrs</span><span class='hs-layout'>)</span>
<a name="line-272"></a> <span class='hs-varid'>updateDecos</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-varid'>font</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>ndwrs</span>
<a name="line-273"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>dwrs_to_wrs</span> <span class='hs-varid'>ndwrs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-layout'>{</span><span class='hs-varid'>decos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ndwrs</span><span class='hs-layout'>}</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-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-274"></a>
<a name="line-275"></a> <span class='hs-varid'>handleMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>DS</span> <span class='hs-layout'>{</span><span class='hs-varid'>decos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>}</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-varid'>t</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-276"></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-keyword'>do</span> <span class='hs-varid'>decorationEventHook</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span>
<a name="line-277"></a> <span class='hs-varid'>handleEvent</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span>
<a name="line-278"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-279"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Hide</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-keyword'>do</span> <span class='hs-varid'>hideDecos</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span>
<a name="line-280"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-281"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetTheme</span> <span class='hs-varid'>nt</span><span class='hs-layout'>)</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-keyword'>do</span> <span class='hs-varid'>releaseResources</span> <span class='hs-varid'>s</span>
<a name="line-282"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>nt</span> <span class='hs-varid'>ds</span>
<a name="line-283"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>ReleaseResources</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-keyword'>do</span> <span class='hs-varid'>releaseResources</span> <span class='hs-varid'>s</span>
<a name="line-284"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Decoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>I</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span>
<a name="line-285"></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-286"></a>
<a name="line-287"></a> <span class='hs-varid'>modifierDescription</span> <span class='hs-layout'>(</span><span class='hs-conid'>Decoration</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>describeDeco</span> <span class='hs-varid'>ds</span>
<a name="line-288"></a>
<a name="line-289"></a><a name="handleEvent"></a><span class='hs-comment'>-- | By default 'Decoration' handles 'PropertyEvent' and 'ExposeEvent'</span>
<a name="line-290"></a><span class='hs-comment'>-- only.</span>
<a name="line-291"></a><span class='hs-definition'>handleEvent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DecorationState</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-292"></a><span class='hs-definition'>handleEvent</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>DS</span> <span class='hs-varid'>dwrs</span> <span class='hs-varid'>fs</span><span class='hs-layout'>)</span> <span class='hs-varid'>e</span>
<a name="line-293"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PropertyEvent</span> <span class='hs-layout'>{</span><span class='hs-varid'>ev_window</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>e</span>
<a name="line-294"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>w</span> <span class='hs-varop'>`elemIndex`</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>updateDeco</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>fs</span> <span class='hs-layout'>(</span><span class='hs-varid'>dwrs</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-295"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ExposeEvent</span> <span class='hs-layout'>{</span><span class='hs-varid'>ev_window</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>e</span>
<a name="line-296"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>w</span> <span class='hs-varop'>`elemIndex`</span> <span class='hs-layout'>(</span><span class='hs-varid'>catMaybes</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span> <span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>updateDeco</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>fs</span> <span class='hs-layout'>(</span><span class='hs-varid'>dwrs</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-297"></a><span class='hs-definition'>handleEvent</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</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-298"></a>
<a name="line-299"></a><a name="handleMouseFocusDrag"></a><span class='hs-comment'>-- | Mouse focus and mouse drag are handled by the same function, this</span>
<a name="line-300"></a><span class='hs-comment'>-- way we can start dragging unfocused windows too.</span>
<a name="line-301"></a><span class='hs-definition'>handleMouseFocusDrag</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>ds</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DecorationState</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-302"></a><span class='hs-definition'>handleMouseFocusDrag</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>(</span><span class='hs-conid'>DS</span> <span class='hs-varid'>dwrs</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</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>
<a name="line-303"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ev_event_type</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>et</span>
<a name="line-304"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ev_x_root</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ex</span>
<a name="line-305"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ev_y_root</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ey</span> <span class='hs-layout'>}</span>
<a name="line-306"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>et</span> <span class='hs-varop'>==</span> <span class='hs-varid'>buttonPress</span>
<a name="line-307"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span><span class='hs-varid'>r</span><span class='hs-layout'>)</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'>decoRectM</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookFor</span> <span class='hs-varid'>ew</span> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-308"></a> <span class='hs-keyword'>let</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>dx</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>dwh</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>decoRectM</span>
<a name="line-309"></a> <span class='hs-varid'>distFromLeft</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ex</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>dx</span>
<a name="line-310"></a> <span class='hs-varid'>distFromRight</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>dwh</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>ex</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>dx</span><span class='hs-layout'>)</span>
<a name="line-311"></a> <span class='hs-varid'>dealtWith</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>decorationCatchClicksHook</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>mainw</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varid'>distFromLeft</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varid'>distFromRight</span><span class='hs-layout'>)</span>
<a name="line-312"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varid'>dealtWith</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-313"></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-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>focus</span> <span class='hs-varid'>mainw</span> <span class='hs-varop'>>></span> <span class='hs-varid'>decorationWhileDraggingHook</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>ex</span> <span class='hs-varid'>ey</span> <span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-314"></a> <span class='hs-layout'>(</span><span class='hs-varid'>decorationAfterDraggingHook</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>(</span><span class='hs-varid'>mainw</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>ew</span><span class='hs-layout'>)</span>
<a name="line-315"></a><span class='hs-definition'>handleMouseFocusDrag</span> <span class='hs-keyword'>_</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-316"></a>
<a name="line-317"></a><a name="handleDraggingInProgress"></a><span class='hs-definition'>handleDraggingInProgress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</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'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-318"></a><span class='hs-definition'>handleDraggingInProgress</span> <span class='hs-varid'>ex</span> <span class='hs-varid'>ey</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-319"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varid'>ex</span> <span class='hs-comment'>-</span> <span class='hs-varid'>rect_x</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-320"></a> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varid'>ey</span> <span class='hs-comment'>-</span> <span class='hs-varid'>rect_y</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-321"></a> <span class='hs-layout'>(</span><span class='hs-varid'>rect_width</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-322"></a> <span class='hs-layout'>(</span><span class='hs-varid'>rect_height</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-323"></a> <span class='hs-varid'>sendMessage</span> <span class='hs-varop'>$</span> <span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span>
<a name="line-324"></a>
<a name="line-325"></a><a name="lookFor"></a><span class='hs-comment'>-- | Given a window and the state, if a matching decoration is in the</span>
<a name="line-326"></a><span class='hs-comment'>-- state return it with its ('Maybe') 'Rectangle'.</span>
<a name="line-327"></a><span class='hs-definition'>lookFor</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-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-conid'>DecoWin</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-layout'>(</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-layout'>)</span>
<a name="line-328"></a><span class='hs-definition'>lookFor</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dw</span><span class='hs-layout'>,</span><span class='hs-varid'>dr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-varid'>dw</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-varid'>dw</span><span class='hs-layout'>,</span><span class='hs-varid'>dr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-329"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookFor</span> <span class='hs-varid'>w</span> <span class='hs-varid'>dwrs</span>
<a name="line-330"></a><span class='hs-definition'>lookFor</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>dwrs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookFor</span> <span class='hs-varid'>w</span> <span class='hs-varid'>dwrs</span>
<a name="line-331"></a><span class='hs-definition'>lookFor</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-332"></a>
<a name="line-333"></a><a name="findWindowByDecoration"></a><span class='hs-definition'>findWindowByDecoration</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DecorationState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-layout'>(</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-layout'>)</span>
<a name="line-334"></a><span class='hs-definition'>findWindowByDecoration</span> <span class='hs-varid'>w</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookFor</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>decos</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span>
<a name="line-335"></a>
<a name="line-336"></a><a name="initState"></a><span class='hs-comment'>-- | Initialize the 'DecorationState' by initializing the font</span>
<a name="line-337"></a><span class='hs-comment'>-- structure and by creating the needed decorations.</span>
<a name="line-338"></a><span class='hs-definition'>initState</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ds</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span>
<a name="line-339"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-conid'>Window</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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>DecorationState</span>
<a name="line-340"></a><span class='hs-definition'>initState</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-341"></a> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>initXMF</span> <span class='hs-layout'>(</span><span class='hs-varid'>fontName</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-342"></a> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createDecos</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>wrs</span>
<a name="line-343"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>DS</span> <span class='hs-varid'>dwrs</span> <span class='hs-varid'>fs</span>
<a name="line-344"></a>
<a name="line-345"></a><a name="releaseResources"></a><span class='hs-comment'>-- | Delete windows stored in the state and release the font structure.</span>
<a name="line-346"></a><span class='hs-definition'>releaseResources</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DecorationState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-347"></a><span class='hs-definition'>releaseResources</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-348"></a> <span class='hs-varid'>deleteDecos</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>decos</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-349"></a> <span class='hs-varid'>releaseXMF</span> <span class='hs-layout'>(</span><span class='hs-varid'>font</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-350"></a>
<a name="line-351"></a><a name="createDecos"></a><span class='hs-comment'>-- | Create the decoration windows of a list of windows and their</span>
<a name="line-352"></a><span class='hs-comment'>-- rectangles, by calling the 'decorate' method of the</span>
<a name="line-353"></a><span class='hs-comment'>-- 'DecorationStyle' received.</span>
<a name="line-354"></a><span class='hs-definition'>createDecos</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DecorationStyle</span> <span class='hs-varid'>ds</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ds</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-conid'>Window</span>
<a name="line-355"></a> <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> <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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-conid'>DecoWin</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-356"></a><span class='hs-definition'>createDecos</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-layout'>(</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-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-357"></a> <span class='hs-varid'>deco</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>decorate</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>(</span><span class='hs-varid'>decoWidth</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>decoHeight</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</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>
<a name="line-358"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>deco</span> <span class='hs-keyword'>of</span>
<a name="line-359"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>dr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>dw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createDecoWindow</span> <span class='hs-varid'>t</span> <span class='hs-varid'>dr</span>
<a name="line-360"></a> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createDecos</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>xs</span>
<a name="line-361"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</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> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dw</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>dr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>dwrs</span>
<a name="line-362"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>dwrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createDecos</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>s</span> <span class='hs-varid'>wrs</span> <span class='hs-varid'>xs</span>
<a name="line-363"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</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> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>dwrs</span>
<a name="line-364"></a><span class='hs-definition'>createDecos</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-365"></a>
<a name="line-366"></a><a name="createDecoWindow"></a><span class='hs-definition'>createDecoWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Theme</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-367"></a><span class='hs-definition'>createDecoWindow</span> <span class='hs-varid'>t</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>mask</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</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> <span class='hs-keyword'>in</span>
<a name="line-368"></a> <span class='hs-varid'>createNewWindow</span> <span class='hs-varid'>r</span> <span class='hs-varid'>mask</span> <span class='hs-layout'>(</span><span class='hs-varid'>inactiveColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-conid'>True</span>
<a name="line-369"></a>
<a name="line-370"></a><a name="showDecos"></a><span class='hs-definition'>showDecos</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DecoWin</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-371"></a><span class='hs-definition'>showDecos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showWindows</span> <span class='hs-varop'>.</span> <span class='hs-varid'>catMaybes</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span>
<a name="line-372"></a>
<a name="line-373"></a><a name="hideDecos"></a><span class='hs-definition'>hideDecos</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DecoWin</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-374"></a><span class='hs-definition'>hideDecos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hideWindows</span> <span class='hs-varop'>.</span> <span class='hs-varid'>catMaybes</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span>
<a name="line-375"></a>
<a name="line-376"></a><a name="deleteDecos"></a><span class='hs-definition'>deleteDecos</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DecoWin</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-377"></a><span class='hs-definition'>deleteDecos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>deleteWindows</span> <span class='hs-varop'>.</span> <span class='hs-varid'>catMaybes</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span>
<a name="line-378"></a>
<a name="line-379"></a><a name="updateDecos"></a><span class='hs-definition'>updateDecos</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>XMonadFont</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-conid'>DecoWin</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-380"></a><span class='hs-definition'>updateDecos</span> <span class='hs-varid'>s</span> <span class='hs-varid'>t</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapM_</span> <span class='hs-varop'>$</span> <span class='hs-varid'>updateDeco</span> <span class='hs-varid'>s</span> <span class='hs-varid'>t</span> <span class='hs-varid'>f</span>
<a name="line-381"></a>
<a name="line-382"></a><a name="updateDeco"></a><span class='hs-comment'>-- | Update a decoration window given a shrinker, a theme, the font</span>
<a name="line-383"></a><span class='hs-comment'>-- structure and the needed 'Rectangle's</span>
<a name="line-384"></a><span class='hs-definition'>updateDeco</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Theme</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>XMonadFont</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>OrigWin</span><span class='hs-layout'>,</span><span class='hs-conid'>DecoWin</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-385"></a><span class='hs-definition'>updateDeco</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>t</span> <span class='hs-varid'>fs</span> <span class='hs-layout'>(</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-layout'>,</span><span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>dw</span><span class='hs-layout'>,</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-386"></a> <span class='hs-varid'>nw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getName</span> <span class='hs-varid'>w</span>
<a name="line-387"></a> <span class='hs-varid'>ur</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readUrgents</span>
<a name="line-388"></a> <span class='hs-varid'>dpy</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>asks</span> <span class='hs-varid'>display</span>
<a name="line-389"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>focusColor</span> <span class='hs-varid'>win</span> <span class='hs-varid'>ic</span> <span class='hs-varid'>ac</span> <span class='hs-varid'>uc</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>maybe</span> <span class='hs-varid'>ic</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>focusw</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>of</span>
<a name="line-390"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>focusw</span> <span class='hs-varop'>==</span> <span class='hs-varid'>win</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ac</span>
<a name="line-391"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>win</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>ur</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>uc</span>
<a name="line-392"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ic</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>peek</span><span class='hs-layout'>)</span>
<a name="line-393"></a> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span>
<a name="line-394"></a> <span class='hs-layout'>(</span><span class='hs-varid'>bc</span><span class='hs-layout'>,</span><span class='hs-varid'>borderc</span><span class='hs-layout'>,</span><span class='hs-varid'>tc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>focusColor</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>inactiveColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>inactiveBorderColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>inactiveTextColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-395"></a> <span class='hs-layout'>(</span><span class='hs-varid'>activeColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>activeBorderColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>activeTextColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-396"></a> <span class='hs-layout'>(</span><span class='hs-varid'>urgentColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>urgentBorderColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>urgentTextColor</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-397"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>shrinkIt</span> <span class='hs-varid'>sh</span>
<a name="line-398"></a> <span class='hs-varid'>name</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>shrinkWhile</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>size</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>textWidthXMF</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>n</span>
<a name="line-399"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>size</span> <span class='hs-varop'>></span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>wh</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ht</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>nw</span><span class='hs-layout'>)</span>
<a name="line-400"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>als</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>AlignCenter</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-layout'>(</span><span class='hs-varid'>windowTitleAddons</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-401"></a> <span class='hs-varid'>strs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>name</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>windowTitleAddons</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-402"></a> <span class='hs-varid'>i_als</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-layout'>(</span><span class='hs-varid'>windowTitleIcons</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-403"></a> <span class='hs-varid'>icons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>windowTitleIcons</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-404"></a> <span class='hs-varid'>paintTextAndIcons</span> <span class='hs-varid'>dw</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>ht</span> <span class='hs-num'>1</span> <span class='hs-varid'>bc</span> <span class='hs-varid'>borderc</span> <span class='hs-varid'>tc</span> <span class='hs-varid'>bc</span> <span class='hs-varid'>als</span> <span class='hs-varid'>strs</span> <span class='hs-varid'>i_als</span> <span class='hs-varid'>icons</span>
<a name="line-405"></a><span class='hs-definition'>updateDeco</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</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-conid'>Just</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hideWindow</span> <span class='hs-varid'>w</span>
<a name="line-406"></a><span class='hs-definition'>updateDeco</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</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-407"></a>
<a name="line-408"></a><a name="isInStack"></a><span class='hs-comment'>-- | True if the window is in the 'Stack'. The 'Window' comes second</span>
<a name="line-409"></a><span class='hs-comment'>-- to facilitate list processing, even though @w \`isInStack\` s@ won't</span>
<a name="line-410"></a><span class='hs-comment'>-- work...;)</span>
<a name="line-411"></a><span class='hs-definition'>isInStack</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-412"></a><span class='hs-definition'>isInStack</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>elem</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-413"></a>
<a name="line-414"></a><a name="isVisible"></a><span class='hs-comment'>-- | Given a 'Rectangle' and a list of 'Rectangle's is True if the</span>
<a name="line-415"></a><span class='hs-comment'>-- 'Rectangle' is not completely contained by any 'Rectangle' of the</span>
<a name="line-416"></a><span class='hs-comment'>-- list.</span>
<a name="line-417"></a><span class='hs-definition'>isVisible</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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-418"></a><span class='hs-definition'>isVisible</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>and</span> <span class='hs-varop'>.</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>f</span> <span class='hs-conid'>[]</span>
<a name="line-419"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>r</span> <span class='hs-varop'>`isWithin`</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>False</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>True</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span>
<a name="line-420"></a>
<a name="line-421"></a><a name="isInvisible"></a><span class='hs-comment'>-- | The contrary of 'isVisible'.</span>
<a name="line-422"></a><span class='hs-definition'>isInvisible</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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-423"></a><span class='hs-definition'>isInvisible</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>isVisible</span> <span class='hs-varid'>r</span>
<a name="line-424"></a>
<a name="line-425"></a><a name="isWithin"></a><span class='hs-comment'>-- | True is the first 'Rectangle' is totally within the second</span>
<a name="line-426"></a><span class='hs-comment'>-- 'Rectangle'.</span>
<a name="line-427"></a><span class='hs-definition'>isWithin</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-428"></a><span class='hs-definition'>isWithin</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-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>rx</span> <span class='hs-varid'>ry</span> <span class='hs-varid'>rw</span> <span class='hs-varid'>rh</span><span class='hs-layout'>)</span>
<a name="line-429"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>rx</span><span class='hs-layout'>,</span> <span class='hs-varid'>x</span> <span class='hs-varop'><=</span> <span class='hs-varid'>rx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>rw</span>
<a name="line-430"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>y</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>ry</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span> <span class='hs-varop'><=</span> <span class='hs-varid'>ry</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>rh</span>
<a name="line-431"></a> <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'>w</span> <span class='hs-varop'><=</span> <span class='hs-varid'>rx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>rw</span>
<a name="line-432"></a> <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'>h</span> <span class='hs-varop'><=</span> <span class='hs-varid'>ry</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>rh</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-433"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-434"></a>
<a name="line-435"></a><a name="shrinkWhile"></a><span class='hs-definition'>shrinkWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>String</span>
<a name="line-436"></a><span class='hs-definition'>shrinkWhile</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sw</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sh</span> <span class='hs-varid'>x</span>
<a name="line-437"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>sw</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>n</span>
<a name="line-438"></a> <span class='hs-varid'>sw</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-str'>""</span>
<a name="line-439"></a> <span class='hs-varid'>sw</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-conop'>:</span><span class='hs-varid'>ns</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-440"></a> <span class='hs-varid'>cond</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p</span> <span class='hs-varid'>n</span>
<a name="line-441"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>cond</span>
<a name="line-442"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>sw</span> <span class='hs-varid'>ns</span>
<a name="line-443"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>n</span>
<a name="line-444"></a>
<a name="line-445"></a><a name="CustomShrink"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CustomShrink</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CustomShrink</span>
<a name="line-446"></a><a name="instance%20Show%20CustomShrink"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>CustomShrink</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>show</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-447"></a><a name="instance%20Read%20CustomShrink"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Read</span> <span class='hs-conid'>CustomShrink</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>readsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>CustomShrink</span><span class='hs-layout'>,</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-448"></a>
<a name="line-449"></a><a name="Shrinker"></a><span class='hs-keyword'>class</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Shrinker</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>where</span>
<a name="line-450"></a> <span class='hs-varid'>shrinkIt</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-451"></a>
<a name="line-452"></a><a name="DefaultShrinker"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>DefaultShrinker</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DefaultShrinker</span>
<a name="line-453"></a><a name="instance%20Show%20DefaultShrinker"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>DefaultShrinker</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>show</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-454"></a><a name="instance%20Read%20DefaultShrinker"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Read</span> <span class='hs-conid'>DefaultShrinker</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>readsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>DefaultShrinker</span><span class='hs-layout'>,</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-455"></a><a name="instance%20Shrinker%20DefaultShrinker"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Shrinker</span> <span class='hs-conid'>DefaultShrinker</span> <span class='hs-keyword'>where</span>
<a name="line-456"></a> <span class='hs-varid'>shrinkIt</span> <span class='hs-keyword'>_</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>""</span><span class='hs-keyglyph'>]</span>
<a name="line-457"></a> <span class='hs-varid'>shrinkIt</span> <span class='hs-varid'>s</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cs</span> <span class='hs-conop'>:</span> <span class='hs-varid'>shrinkIt</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>init</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span>
<a name="line-458"></a>
<a name="line-459"></a><a name="shrinkText"></a><span class='hs-definition'>shrinkText</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DefaultShrinker</span>
<a name="line-460"></a><span class='hs-definition'>shrinkText</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DefaultShrinker</span>
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