<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ --> <title>XMonad/Actions/CycleSelectedLayouts.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <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.Actions.CycleSelectedLayouts</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Roman Cheplyaka</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 : Roman Cheplyaka <roma@ro-che.info></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'>-- This module allows to cycle through the given subset of layouts.</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-14"></a> <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'>Actions</span><span class='hs-varop'>.</span><span class='hs-conid'>CycleSelectedLayouts</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'>cycleThroughLayouts</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-19"></a> <a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span> <a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>findIndex</span><span class='hs-layout'>)</span> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromMaybe</span><span class='hs-layout'>)</span> <a name="line-23"></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'>LayoutCombinators</span> <span class='hs-layout'>(</span><span class='hs-conid'>JumpToLayout</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</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'>S</span> <a name="line-25"></a> <a name="line-26"></a><span class='hs-comment'>-- $usage</span> <a name="line-27"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span> <a name="line-28"></a><span class='hs-comment'>--</span> <a name="line-29"></a><span class='hs-comment'>-- > import XMonad hiding ((|||))</span> <a name="line-30"></a><span class='hs-comment'>-- > import XMonad.Layout.LayoutCombinators ((|||))</span> <a name="line-31"></a><span class='hs-comment'>-- > import XMonad.Actions.CycleSelectedLayouts</span> <a name="line-32"></a><span class='hs-comment'>--</span> <a name="line-33"></a><span class='hs-comment'>-- > , ((modm, xK_t ), cycleThroughLayouts ["Tall", "Mirror Tall"])</span> <a name="line-34"></a><span class='hs-comment'>--</span> <a name="line-35"></a><span class='hs-comment'>-- Make sure you are using NewSelect from XMonad.Layout.LayoutCombinators,</span> <a name="line-36"></a><span class='hs-comment'>-- rather than the Select defined in xmonad core.</span> <a name="line-37"></a> <a name="line-38"></a><a name="cycleToNext"></a><span class='hs-definition'>cycleToNext</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span> <a name="line-39"></a><span class='hs-definition'>cycleToNext</span> <span class='hs-varid'>lst</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-40"></a> <span class='hs-comment'>-- not beautiful but simple and readable</span> <a name="line-41"></a> <span class='hs-varid'>ind</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findIndex</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varid'>lst</span> <a name="line-42"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lst</span> <span class='hs-varop'>!!</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>ind</span> <span class='hs-varop'>==</span> <span class='hs-varid'>length</span> <span class='hs-varid'>lst</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span> <span class='hs-keyword'>then</span> <span class='hs-num'>0</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ind</span><span class='hs-varop'>+</span><span class='hs-num'>1</span> <a name="line-43"></a> <a name="line-44"></a><a name="cycleThroughLayouts"></a><span class='hs-comment'>-- | If the current layout is in the list, cycle to the next layout. Otherwise,</span> <a name="line-45"></a><span class='hs-comment'>-- apply the first layout from list.</span> <a name="line-46"></a><span class='hs-definition'>cycleThroughLayouts</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-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span> <a name="line-47"></a><span class='hs-definition'>cycleThroughLayouts</span> <span class='hs-varid'>lst</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-48"></a> <span class='hs-varid'>winset</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span> <a name="line-49"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ld</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>description</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>layout</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-varop'>$</span> <span class='hs-varid'>winset</span> <a name="line-50"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>newld</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span> <span class='hs-varid'>lst</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>cycleToNext</span> <span class='hs-varid'>lst</span> <span class='hs-varid'>ld</span><span class='hs-layout'>)</span> <a name="line-51"></a> <span class='hs-varid'>sendMessage</span> <span class='hs-varop'>$</span> <span class='hs-conid'>JumpToLayout</span> <span class='hs-varid'>newld</span> </pre></body> </html>
