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<title>XMonad/Layout/SimpleDecoration.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}</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.SimpleDecoration</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2007 Andrea Rossato</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 for adding simple decorations to the windows of a</span>
<a name="line-13"></a><span class='hs-comment'>-- given layout. The decorations are in the form of ion-like tabs</span>
<a name="line-14"></a><span class='hs-comment'>-- for window titles.</span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>SimpleDecoration</span>
<a name="line-19"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage:</span>
<a name="line-20"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-21"></a> <span class='hs-varid'>simpleDeco</span>
<a name="line-22"></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>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultTheme</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SimpleDecoration</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-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>
<a name="line-26"></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>
<a name="line-27"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-28"></a>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>Decoration</span>
<a name="line-31"></a>
<a name="line-32"></a><span class='hs-comment'>-- $usage</span>
<a name="line-33"></a><span class='hs-comment'>-- You can use this module with the following in your</span>
<a name="line-34"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-35"></a><span class='hs-comment'>--</span>
<a name="line-36"></a><span class='hs-comment'>-- > import XMonad.Layout.SimpleDecoration</span>
<a name="line-37"></a><span class='hs-comment'>--</span>
<a name="line-38"></a><span class='hs-comment'>-- Then edit your @layoutHook@ by adding the SimpleDecoration decoration to</span>
<a name="line-39"></a><span class='hs-comment'>-- your layout:</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- > myL = simpleDeco shrinkText defaultTheme (layoutHook defaultConfig)</span>
<a name="line-42"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myL }</span>
<a name="line-43"></a><span class='hs-comment'>--</span>
<a name="line-44"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-45"></a><span class='hs-comment'>--</span>
<a name="line-46"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- You can also edit the default configuration options.</span>
<a name="line-49"></a><span class='hs-comment'>--</span>
<a name="line-50"></a><span class='hs-comment'>-- > mySDConfig = defaultTheme { inactiveBorderColor = "red"</span>
<a name="line-51"></a><span class='hs-comment'>-- > , inactiveTextColor = "red"}</span>
<a name="line-52"></a><span class='hs-comment'>--</span>
<a name="line-53"></a><span class='hs-comment'>-- and</span>
<a name="line-54"></a><span class='hs-comment'>--</span>
<a name="line-55"></a><span class='hs-comment'>-- > myL = dwmStyle shrinkText mySDConfig (layoutHook defaultTheme)</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="simpleDeco"></a><span class='hs-comment'>-- | Add simple decorations to windows of a layout.</span>
<a name="line-58"></a><span class='hs-definition'>simpleDeco</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-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>
<a name="line-59"></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-conid'>SimpleDecoration</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-60"></a><span class='hs-definition'>simpleDeco</span> <span class='hs-varid'>s</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>decoration</span> <span class='hs-varid'>s</span> <span class='hs-varid'>c</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Simple</span> <span class='hs-conid'>True</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="SimpleDecoration"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SimpleDecoration</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Simple</span> <span class='hs-conid'>Bool</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-63"></a>
<a name="line-64"></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'>SimpleDecoration</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-65"></a> <span class='hs-varid'>describeDeco</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Simple"</span>
<a name="line-66"></a> <span class='hs-varid'>shrink</span> <span class='hs-layout'>(</span><span class='hs-conid'>Simple</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</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-varid'>r</span><span class='hs-keyglyph'>@</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>
<a name="line-67"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</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> <span class='hs-keyword'>else</span> <span class='hs-varid'>r</span>
<a name="line-68"></a> <span class='hs-varid'>pureDecoration</span> <span class='hs-layout'>(</span><span class='hs-conid'>Simple</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varid'>wh</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'>wid</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-69"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>isInStack</span> <span class='hs-varid'>s</span> <span class='hs-varid'>w</span>
<a name="line-70"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span>
<a name="line-71"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>ht</span>
<a name="line-72"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>ht</span>
<a name="line-73"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-74"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>nwh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-varid'>wid</span> <span class='hs-varid'>wh</span>
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