<?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/Layout/LayoutScreens.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleContexts, FlexibleInstances, MultiParamTypeClasses #-}</span> <a name="line-2"></a> <a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-4"></a><span class='hs-comment'>-- |</span> <a name="line-5"></a><span class='hs-comment'>-- Module : XMonad.Layout.LayoutScreens</span> <a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) David Roundy <droundy@darcs.net></span> <a name="line-7"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span> <a name="line-8"></a><span class='hs-comment'>--</span> <a name="line-9"></a><span class='hs-comment'>-- Maintainer : none</span> <a name="line-10"></a><span class='hs-comment'>-- Stability : unstable</span> <a name="line-11"></a><span class='hs-comment'>-- Portability : unportable</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>-- Divide a single screen into multiple screens.</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'>LayoutScreens</span> <span class='hs-layout'>(</span> <a name="line-17"></a> <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'>layoutScreens</span><span class='hs-layout'>,</span> <span class='hs-varid'>fixedLayout</span> <a name="line-20"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-21"></a> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span> <a name="line-23"></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-24"></a> <a name="line-25"></a><span class='hs-comment'>-- $usage</span> <a name="line-26"></a><span class='hs-comment'>-- This module allows you to pretend that you have more than one screen by</span> <a name="line-27"></a><span class='hs-comment'>-- dividing a single screen into multiple screens that xmonad will treat as</span> <a name="line-28"></a><span class='hs-comment'>-- separate screens. This should definitely be useful for testing the</span> <a name="line-29"></a><span class='hs-comment'>-- behavior of xmonad under Xinerama, and it's possible that it'd also be</span> <a name="line-30"></a><span class='hs-comment'>-- handy for use as an actual user interface, if you've got a very large</span> <a name="line-31"></a><span class='hs-comment'>-- screen and long for greater flexibility (e.g. being able to see your</span> <a name="line-32"></a><span class='hs-comment'>-- email window at all times, a crude mimic of sticky windows).</span> <a name="line-33"></a><span class='hs-comment'>--</span> <a name="line-34"></a><span class='hs-comment'>-- You can use this module with the following in your</span> <a name="line-35"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@ file:</span> <a name="line-36"></a><span class='hs-comment'>--</span> <a name="line-37"></a><span class='hs-comment'>-- > import XMonad.Layout.LayoutScreens</span> <a name="line-38"></a><span class='hs-comment'>-- > import XMonad.Layout.TwoPane</span> <a name="line-39"></a><span class='hs-comment'>--</span> <a name="line-40"></a><span class='hs-comment'>-- Then add some keybindings; for example:</span> <a name="line-41"></a><span class='hs-comment'>--</span> <a name="line-42"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_space), layoutScreens 2 (TwoPane 0.5 0.5))</span> <a name="line-43"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_space), rescreen)</span> <a name="line-44"></a><span class='hs-comment'>--</span> <a name="line-45"></a><span class='hs-comment'>-- Another example use would be to handle a scenario where xrandr didn't</span> <a name="line-46"></a><span class='hs-comment'>-- work properly (e.g. a VNC X server in my case) and you want to be able</span> <a name="line-47"></a><span class='hs-comment'>-- to resize your screen (e.g. to match the size of a remote VNC client):</span> <a name="line-48"></a><span class='hs-comment'>--</span> <a name="line-49"></a><span class='hs-comment'>-- > import XMonad.Layout.LayoutScreens</span> <a name="line-50"></a><span class='hs-comment'>--</span> <a name="line-51"></a><span class='hs-comment'>-- > , ((modm .|. shiftMask, xK_space),</span> <a name="line-52"></a><span class='hs-comment'>-- > layoutScreens 1 (fixedLayout [Rectangle 0 0 1024 768]))</span> <a name="line-53"></a><span class='hs-comment'>-- > , ((modm .|. controlMask .|. shiftMask, xK_space), rescreen)</span> <a name="line-54"></a><span class='hs-comment'>--</span> <a name="line-55"></a><span class='hs-comment'>-- For detailed instructions on editing your key bindings, see</span> <a name="line-56"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_key_bindings".</span> <a name="line-57"></a> <a name="line-58"></a><a name="layoutScreens"></a><span class='hs-definition'>layoutScreens</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-varid'>l</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>l</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span> <a name="line-59"></a><span class='hs-definition'>layoutScreens</span> <span class='hs-varid'>nscr</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>nscr</span> <span class='hs-varop'><</span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trace</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Can't layoutScreens with only "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>nscr</span> <span class='hs-varop'>++</span> <span class='hs-str'>" screens."</span> <a name="line-60"></a><span class='hs-definition'>layoutScreens</span> <span class='hs-varid'>nscr</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <a name="line-61"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>rtrect</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>asks</span> <span class='hs-varid'>theRoot</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>getWindowRectangle</span> <a name="line-62"></a> <span class='hs-layout'>(</span><span class='hs-varid'>wss</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>runLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Workspace</span> <span class='hs-str'>""</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>{</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span><span class='hs-keyglyph'>=</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>up</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>down</span><span class='hs-keyglyph'>=</span><span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-varid'>nscr</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>rtrect</span> <a name="line-63"></a> <span class='hs-varid'>windows</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ws</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-conid'>StackSet</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-keyglyph'>=</span> <span class='hs-varid'>v</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-keyglyph'>=</span> <span class='hs-varid'>vs</span><span class='hs-layout'>,</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>hidden</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hs</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <a name="line-64"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitAt</span> <span class='hs-varid'>nscr</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span><span class='hs-conop'>:</span><span class='hs-varid'>vs</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-varid'>hs</span> <a name="line-65"></a> <span class='hs-varid'>s</span><span class='hs-conop'>:</span><span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>wss</span> <a name="line-66"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>ws</span> <span class='hs-layout'>{</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Screen</span> <span class='hs-varid'>x</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-conid'>SD</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>visible</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipWith3</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Screen</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span> <span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-conid'>SD</span> <span class='hs-varid'>ss</span> <a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>hidden</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ys</span> <span class='hs-layout'>}</span> <a name="line-69"></a> <a name="line-70"></a><a name="getWindowRectangle"></a><span class='hs-definition'>getWindowRectangle</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'>Rectangle</span> <a name="line-71"></a><span class='hs-definition'>getWindowRectangle</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <a name="line-72"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getWindowAttributes</span> <span class='hs-varid'>d</span> <span class='hs-varid'>w</span> <a name="line-73"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_x</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_y</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-74"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_width</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wa_height</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-75"></a> <a name="line-76"></a><a name="FixedLayout"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FixedLayout</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FixedLayout</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Rectangle</span><span class='hs-keyglyph'>]</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-77"></a> <a name="line-78"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-conid'>FixedLayout</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span> <a name="line-79"></a> <span class='hs-varid'>doLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>FixedLayout</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip</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> <span class='hs-varid'>rs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <a name="line-80"></a> <a name="line-81"></a><a name="fixedLayout"></a><span class='hs-definition'>fixedLayout</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'>FixedLayout</span> <span class='hs-varid'>a</span> <a name="line-82"></a><span class='hs-definition'>fixedLayout</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FixedLayout</span> </pre></body> </html>