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<title>XMonad/Hooks/WorkspaceByPos.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.WorkspaceByPos</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Jan Vornberger 2009</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : jan.vornberger@informatik.uni-oldenburg.de</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : not portable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Useful in a dual-head setup: Looks at the requested geometry of</span>
<a name="line-12"></a><span class='hs-comment'>-- new windows and moves them to the workspace of the non-focused</span>
<a name="line-13"></a><span class='hs-comment'>-- screen if necessary.</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-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'>WorkspaceByPos</span> <span class='hs-layout'>(</span>
<a name="line-18"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-19"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-20"></a> <span class='hs-varid'>workspaceByPos</span>
<a name="line-21"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>W</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>XUtils</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span><span class='hs-layout'>)</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</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><span class='hs-varop'>.</span><span class='hs-conid'>Error</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><=<</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>guard</span><span class='hs-layout'>,</span><span class='hs-varid'>lift</span><span class='hs-layout'>,</span><span class='hs-varid'>runErrorT</span><span class='hs-layout'>,</span><span class='hs-varid'>throwError</span><span class='hs-layout'>)</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='hs-comment'>-- $usage</span>
<a name="line-32"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>-- > import XMonad.Hooks.WorkspaceByPos</span>
<a name="line-35"></a><span class='hs-comment'>-- ></span>
<a name="line-36"></a><span class='hs-comment'>-- > myManageHook = workspaceByPos <+> manageHook defaultConfig</span>
<a name="line-37"></a><span class='hs-comment'>-- ></span>
<a name="line-38"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { manageHook = myManageHook }</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="workspaceByPos"></a><span class='hs-definition'>workspaceByPos</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ManageHook</span>
<a name="line-41"></a><span class='hs-definition'>workspaceByPos</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>maybe</span> <span class='hs-varid'>idHook</span> <span class='hs-varid'>doShift</span> <span class='hs-varop'><=<</span> <span class='hs-varid'>liftX</span> <span class='hs-varop'>.</span> <span class='hs-varid'>needsMoving</span><span class='hs-layout'>)</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>ask</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="needsMoving"></a><span class='hs-definition'>needsMoving</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>WorkspaceId</span><span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-definition'>needsMoving</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-45"></a> <span class='hs-comment'>-- only relocate windows with non-zero position</span>
<a name="line-46"></a> <span class='hs-varid'>wa</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getWindowAttributes</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span>
<a name="line-47"></a> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>Nothing</span> <span class='hs-varop'>`either`</span> <span class='hs-conid'>Just</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>runErrorT</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-48"></a> <span class='hs-varid'>guard</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_x</span> <span class='hs-varid'>wa</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span> <span class='hs-varid'>wa_y</span> <span class='hs-varid'>wa</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span>
<a name="line-49"></a> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span>
<a name="line-50"></a> <span class='hs-varid'>sc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lift</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-varop'><$></span> <span class='hs-varid'>pointScreen</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_x</span> <span class='hs-varid'>wa</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fi</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_y</span> <span class='hs-varid'>wa</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>wkspc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lift</span> <span class='hs-varop'>$</span> <span class='hs-varid'>screenWorkspace</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>screen</span> <span class='hs-varid'>sc</span><span class='hs-layout'>)</span>
<a name="line-53"></a> <span class='hs-varid'>guard</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>currentTag</span> <span class='hs-varid'>ws</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>wkspc</span>
<a name="line-54"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>wkspc</span> <span class='hs-varop'>`asTypeOf`</span> <span class='hs-varid'>throwError</span> <span class='hs-str'>""</span>
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