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<title>XMonad/Hooks/FadeInactive.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : XMonad.Hooks.FadeInactive</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) 2008 Justin Bogner <mail@justinbogner.com></span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : Justin Bogner <mail@justinbogner.com></span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Makes XMonad set the _NET_WM_WINDOW_OPACITY atom for inactive windows,</span>
<a name="line-12"></a><span class='hs-comment'>-- which causes those windows to become slightly translucent if something</span>
<a name="line-13"></a><span class='hs-comment'>-- like xcompmgr is running</span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-15"></a><span class='hs-keyword'>module</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'>FadeInactive</span> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-17"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-18"></a> <span class='hs-varid'>setOpacity</span><span class='hs-layout'>,</span>
<a name="line-19"></a> <span class='hs-varid'>isUnfocused</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-varid'>fadeIn</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>fadeOut</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>fadeIf</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>fadeInactiveLogHook</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>fadeOutLogHook</span>
<a name="line-25"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-28"></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-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='hs-comment'>-- $usage</span>
<a name="line-32"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>-- > import XMonad</span>
<a name="line-35"></a><span class='hs-comment'>-- > import XMonad.Hooks.FadeInactive</span>
<a name="line-36"></a><span class='hs-comment'>-- ></span>
<a name="line-37"></a><span class='hs-comment'>-- > myLogHook :: X ()</span>
<a name="line-38"></a><span class='hs-comment'>-- > myLogHook = fadeInactiveLogHook fadeAmount</span>
<a name="line-39"></a><span class='hs-comment'>-- > where fadeAmount = 0.8</span>
<a name="line-40"></a><span class='hs-comment'>-- ></span>
<a name="line-41"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { logHook = myLogHook }</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a><span class='hs-comment'>-- fadeAmount can be any rational between 0 and 1.</span>
<a name="line-44"></a><span class='hs-comment'>-- you will need to have xcompmgr <<a href="http://freedesktop.org/wiki/Software/xapps">http://freedesktop.org/wiki/Software/xapps</a>></span>
<a name="line-45"></a><span class='hs-comment'>-- or something similar for this to do anything</span>
<a name="line-46"></a><span class='hs-comment'>--</span>
<a name="line-47"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-48"></a><span class='hs-comment'>--</span>
<a name="line-49"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#The_log_hook_and_external_status_bars"</span>
<a name="line-50"></a><span class='hs-comment'>--</span>
<a name="line-51"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-52"></a><span class='hs-comment'>--</span>
<a name="line-53"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="rationalToOpacity"></a><span class='hs-comment'>-- | Converts a percentage to the format required for _NET_WM_WINDOW_OPACITY</span>
<a name="line-56"></a><span class='hs-definition'>rationalToOpacity</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-57"></a><span class='hs-definition'>rationalToOpacity</span> <span class='hs-varid'>perc</span>
<a name="line-58"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>perc</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span> <span class='hs-varid'>perc</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>round</span> <span class='hs-varid'>perc</span> <span class='hs-comment'>-- to maintain backwards-compatability</span>
<a name="line-59"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>round</span> <span class='hs-varop'>$</span> <span class='hs-varid'>perc</span> <span class='hs-varop'>*</span> <span class='hs-num'>0xffffffff</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="setOpacity"></a><span class='hs-comment'>-- | sets the opacity of a window</span>
<a name="line-62"></a><span class='hs-definition'>setOpacity</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-63"></a><span class='hs-definition'>setOpacity</span> <span class='hs-varid'>w</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>dpy</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-64"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getAtom</span> <span class='hs-str'>"_NET_WM_WINDOW_OPACITY"</span>
<a name="line-65"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getAtom</span> <span class='hs-str'>"CARDINAL"</span>
<a name="line-66"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>changeProperty32</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>propModeReplace</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>rationalToOpacity</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="fadeOut"></a><span class='hs-comment'>-- | fades a window out by setting the opacity</span>
<a name="line-69"></a><span class='hs-definition'>fadeOut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</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-70"></a><span class='hs-definition'>fadeOut</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>setOpacity</span>
<a name="line-71"></a>
<a name="line-72"></a><a name="fadeIn"></a><span class='hs-comment'>-- | makes a window completely opaque</span>
<a name="line-73"></a><span class='hs-definition'>fadeIn</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-74"></a><span class='hs-definition'>fadeIn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fadeOut</span> <span class='hs-num'>1</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="fadeIf"></a><span class='hs-comment'>-- | Fades a window by the specified amount if it satisfies the first query, otherwise</span>
<a name="line-77"></a><span class='hs-comment'>-- makes it opaque.</span>
<a name="line-78"></a><span class='hs-definition'>fadeIf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Query</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Query</span> <span class='hs-conid'>Rational</span>
<a name="line-79"></a><span class='hs-definition'>fadeIf</span> <span class='hs-varid'>qry</span> <span class='hs-varid'>amt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>qry</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>amt</span> <span class='hs-keyword'>else</span> <span class='hs-num'>1</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="fadeInactiveLogHook"></a><span class='hs-comment'>-- | sets the opacity of inactive windows to the specified amount</span>
<a name="line-82"></a><span class='hs-definition'>fadeInactiveLogHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-83"></a><span class='hs-definition'>fadeInactiveLogHook</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fadeOutLogHook</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fadeIf</span> <span class='hs-varid'>isUnfocused</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="isUnfocused"></a><span class='hs-comment'>-- | returns True if the window doesn't have the focus.</span>
<a name="line-86"></a><span class='hs-definition'>isUnfocused</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Query</span> <span class='hs-conid'>Bool</span>
<a name="line-87"></a><span class='hs-definition'>isUnfocused</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ask</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>liftX</span> <span class='hs-varop'>.</span> <span class='hs-varid'>gets</span> <span class='hs-varop'>$</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>True</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>/=</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-varop'>.</span> <span class='hs-varid'>windowset</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="fadeOutLogHook"></a><span class='hs-comment'>-- | fades out every window by the amount returned by the query.</span>
<a name="line-90"></a><span class='hs-definition'>fadeOutLogHook</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Query</span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-91"></a><span class='hs-definition'>fadeOutLogHook</span> <span class='hs-varid'>qry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withWindowSet</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-92"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>visibleWins</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate'</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-varop'>$</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-93"></a> <span class='hs-varid'>concatMap</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-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>visible</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-varid'>forM_</span> <span class='hs-varid'>visibleWins</span> <span class='hs-varop'>$</span> <span class='hs-varid'>liftM2</span> <span class='hs-layout'>(</span><span class='hs-varop'>=<<</span><span class='hs-layout'>)</span> <span class='hs-varid'>setOpacity</span> <span class='hs-layout'>(</span><span class='hs-varid'>runQuery</span> <span class='hs-varid'>qry</span><span class='hs-layout'>)</span>
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