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<title>XMonad/Layout/BorderResize.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE TypeSynonymInstances, MultiParamTypeClasses, PatternGuards #-}</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.BorderResize</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Jan Vornberger 2009</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : jan.vornberger@informatik.uni-oldenburg.de</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : not portable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This layout modifier will allow to resize windows by dragging their</span>
<a name="line-13"></a><span class='hs-comment'>-- borders with the mouse. However, it only works in layouts or modified</span>
<a name="line-14"></a><span class='hs-comment'>-- layouts that react to the 'SetGeometry' message.</span>
<a name="line-15"></a><span class='hs-comment'>-- "XMonad.Layout.WindowArranger" can be used to create such a setup.</span>
<a name="line-16"></a><span class='hs-comment'>-- BorderResize is probably most useful in floating layouts.</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-19"></a>
<a name="line-20"></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'>BorderResize</span>
<a name="line-21"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Usage</span>
<a name="line-22"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-23"></a> <span class='hs-varid'>borderResize</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>BorderResize</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-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-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-29"></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'>WindowArranger</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'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>XUtils</span>
<a name="line-31"></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-layout'>(</span><span class='hs-varid'>when</span><span class='hs-layout'>,</span><span class='hs-varid'>forM</span><span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Arrow</span><span class='hs-layout'>(</span><span class='hs-varid'>first</span><span class='hs-layout'>)</span>
<a name="line-33"></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-34"></a>
<a name="line-35"></a><span class='hs-comment'>-- $usage</span>
<a name="line-36"></a><span class='hs-comment'>-- You can use this module with the following in your</span>
<a name="line-37"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- > import XMonad.Layout.BorderResize</span>
<a name="line-40"></a><span class='hs-comment'>-- > myLayout = borderResize (... layout setup that reacts to SetGeometry ...)</span>
<a name="line-41"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="BorderInfo"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BorderInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RightSideBorder</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>Rectangle</span>
<a name="line-45"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>LeftSideBorder</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>Rectangle</span>
<a name="line-46"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>TopSideBorder</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>Rectangle</span>
<a name="line-47"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BottomSideBorder</span> <span class='hs-conid'>Window</span> <span class='hs-conid'>Rectangle</span>
<a name="line-48"></a> <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> <span class='hs-conid'>Eq</span><span class='hs-layout'>)</span>
<a name="line-49"></a><a name="BorderWithRect"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>BorderWithRect</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>,</span> <span class='hs-conid'>Glyph</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderInfo</span><span class='hs-layout'>)</span>
<a name="line-50"></a><a name="BorderWithWin"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>BorderWithWin</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderInfo</span><span class='hs-layout'>)</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="BorderResize"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BorderResize</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BR</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>BorderWithWin</span><span class='hs-keyglyph'>]</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-53"></a>
<a name="line-54"></a><a name="brBorderOffset"></a><span class='hs-definition'>brBorderOffset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Position</span>
<a name="line-55"></a><span class='hs-definition'>brBorderOffset</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>5</span>
<a name="line-56"></a><a name="brBorderSize"></a><span class='hs-definition'>brBorderSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Dimension</span>
<a name="line-57"></a><span class='hs-definition'>brBorderSize</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>10</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="brCursorRightSide"></a><span class='hs-definition'>brCursorRightSide</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span>
<a name="line-60"></a><span class='hs-definition'>brCursorRightSide</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>96</span>
<a name="line-61"></a><a name="brCursorLeftSide"></a><span class='hs-definition'>brCursorLeftSide</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span>
<a name="line-62"></a><span class='hs-definition'>brCursorLeftSide</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>70</span>
<a name="line-63"></a><a name="brCursorTopSide"></a><span class='hs-definition'>brCursorTopSide</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span>
<a name="line-64"></a><span class='hs-definition'>brCursorTopSide</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>138</span>
<a name="line-65"></a><a name="brCursorBottomSide"></a><span class='hs-definition'>brCursorBottomSide</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span>
<a name="line-66"></a><span class='hs-definition'>brCursorBottomSide</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>16</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="borderResize"></a><span class='hs-definition'>borderResize</span> <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-conid'>BorderResize</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-69"></a><span class='hs-definition'>borderResize</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-70"></a>
<a name="line-71"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-conid'>BorderResize</span> <span class='hs-conid'>Window</span> <span class='hs-keyword'>where</span>
<a name="line-72"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrs</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-varid'>borders</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-74"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>preparedBorders</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>for</span> <span class='hs-varid'>wrs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>wr</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-layout'>,</span> <span class='hs-varid'>prepareBorders</span> <span class='hs-varid'>wr</span><span class='hs-layout'>)</span>
<a name="line-75"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>deleteBorder</span> <span class='hs-varid'>borders</span>
<a name="line-76"></a> <span class='hs-varid'>newBorders</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>forM</span> <span class='hs-varid'>preparedBorders</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>wr</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>b1</span><span class='hs-layout'>,</span> <span class='hs-varid'>b2</span><span class='hs-layout'>,</span> <span class='hs-varid'>b3</span><span class='hs-layout'>,</span> <span class='hs-varid'>b4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-77"></a> <span class='hs-varid'>first</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>wr</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unzip</span> <span class='hs-varop'><$></span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>createBorder</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b1</span><span class='hs-layout'>,</span><span class='hs-varid'>b2</span><span class='hs-layout'>,</span><span class='hs-varid'>b3</span><span class='hs-layout'>,</span><span class='hs-varid'>b4</span><span class='hs-keyglyph'>]</span>
<a name="line-78"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>wrs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>newBorders</span>
<a name="line-79"></a> <span class='hs-varid'>newBordersSerialized</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>newBorders</span>
<a name="line-80"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>wrs'</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BR</span> <span class='hs-varid'>newBordersSerialized</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-comment'>-- What we return is the original wrs with the new border</span>
<a name="line-82"></a> <span class='hs-comment'>-- windows inserted at the correct positions - this way, the core</span>
<a name="line-83"></a> <span class='hs-comment'>-- will restack the borders correctly.</span>
<a name="line-84"></a> <span class='hs-comment'>-- We also return information about our borders, so that we</span>
<a name="line-85"></a> <span class='hs-comment'>-- can handle events that they receive and destroy them when</span>
<a name="line-86"></a> <span class='hs-comment'>-- they are no longer needed.</span>
<a name="line-87"></a>
<a name="line-88"></a> <span class='hs-varid'>handleMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>BR</span> <span class='hs-varid'>borders</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-89"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Event</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>handleResize</span> <span class='hs-varid'>borders</span> <span class='hs-varid'>e</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-90"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>LayoutMessages</span> <span class='hs-keyglyph'>=</span>
<a name="line-91"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>deleteBorder</span> <span class='hs-varid'>borders</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BR</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-92"></a> <span class='hs-varid'>handleMess</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="prepareBorders"></a><span class='hs-definition'>prepareBorders</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>BorderWithRect</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderWithRect</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderWithRect</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderWithRect</span><span class='hs-layout'>)</span>
<a name="line-95"></a><span class='hs-definition'>prepareBorders</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</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'>wh</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-96"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>wh</span> <span class='hs-comment'>-</span> <span class='hs-varid'>brBorderOffset</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>brBorderSize</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>brCursorRightSide</span> <span class='hs-layout'>,</span> <span class='hs-conid'>RightSideBorder</span> <span class='hs-varid'>w</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-97"></a> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>brBorderOffset</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>brBorderSize</span> <span class='hs-varid'>ht</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>brCursorLeftSide</span> <span class='hs-layout'>,</span> <span class='hs-conid'>LeftSideBorder</span> <span class='hs-varid'>w</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-98"></a> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</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'>brBorderOffset</span><span class='hs-layout'>)</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>brCursorTopSide</span> <span class='hs-layout'>,</span> <span class='hs-conid'>TopSideBorder</span> <span class='hs-varid'>w</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-99"></a> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</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'>ht</span> <span class='hs-comment'>-</span> <span class='hs-varid'>brBorderOffset</span><span class='hs-layout'>)</span> <span class='hs-varid'>wh</span> <span class='hs-varid'>brBorderSize</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-varid'>brCursorBottomSide</span> <span class='hs-layout'>,</span> <span class='hs-conid'>BottomSideBorder</span> <span class='hs-varid'>w</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-layout'>)</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="handleResize"></a><span class='hs-definition'>handleResize</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>BorderWithWin</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Event</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-103"></a><span class='hs-definition'>handleResize</span> <span class='hs-varid'>borders</span> <span class='hs-conid'>ButtonEvent</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ev_window</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ew</span><span class='hs-layout'>,</span> <span class='hs-varid'>ev_event_type</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>et</span> <span class='hs-layout'>}</span>
<a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>et</span> <span class='hs-varop'>==</span> <span class='hs-varid'>buttonPress</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>edge</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>ew</span> <span class='hs-varid'>borders</span> <span class='hs-keyglyph'>=</span>
<a name="line-105"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>edge</span> <span class='hs-keyword'>of</span>
<a name="line-106"></a> <span class='hs-conid'>RightSideBorder</span> <span class='hs-varid'>hostWin</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-107"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-108"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nwh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hx</span><span class='hs-layout'>)</span>
<a name="line-109"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>hht</span>
<a name="line-110"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-111"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hx</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-conid'>LeftSideBorder</span> <span class='hs-varid'>hostWin</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-113"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-114"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>min</span> <span class='hs-layout'>(</span><span class='hs-varid'>hx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hwh</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>x</span>
<a name="line-115"></a> <span class='hs-varid'>nwh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hwh</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>hx</span> <span class='hs-comment'>-</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-116"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>nx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>nwh</span> <span class='hs-varid'>hht</span>
<a name="line-117"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-118"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-varid'>hx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hwh</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-119"></a> <span class='hs-conid'>TopSideBorder</span> <span class='hs-varid'>hostWin</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-120"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-121"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ny</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>min</span> <span class='hs-layout'>(</span><span class='hs-varid'>hy</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>y</span>
<a name="line-122"></a> <span class='hs-varid'>nht</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hht</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>hy</span> <span class='hs-comment'>-</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-123"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>ny</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>nht</span>
<a name="line-124"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-125"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'><</span> <span class='hs-varid'>hy</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fi</span> <span class='hs-varid'>hht</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-conid'>BottomSideBorder</span> <span class='hs-varid'>hostWin</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-127"></a> <span class='hs-varid'>mouseDrag</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-128"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>nht</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fi</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hy</span><span class='hs-layout'>)</span>
<a name="line-129"></a> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-varid'>hx</span> <span class='hs-varid'>hy</span> <span class='hs-varid'>hwh</span> <span class='hs-varid'>nht</span>
<a name="line-130"></a> <span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span>
<a name="line-131"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-comment'>-</span> <span class='hs-varid'>hy</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sendMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetGeometry</span> <span class='hs-varid'>rect</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>focus</span> <span class='hs-varid'>hostWin</span><span class='hs-layout'>)</span>
<a name="line-132"></a><span class='hs-definition'>handleResize</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="createBorder"></a><span class='hs-definition'>createBorder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BorderWithRect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>BorderWithWin</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-135"></a><span class='hs-definition'>createBorder</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderRect</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderCursor</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfo</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-136"></a> <span class='hs-varid'>borderWin</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createInputWindow</span> <span class='hs-varid'>borderCursor</span> <span class='hs-varid'>borderRect</span>
<a name="line-137"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>borderWin</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderRect</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>borderWin</span><span class='hs-layout'>,</span> <span class='hs-varid'>borderInfo</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-138"></a>
<a name="line-139"></a><a name="deleteBorder"></a><span class='hs-definition'>deleteBorder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BorderWithWin</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-140"></a><span class='hs-definition'>deleteBorder</span> <span class='hs-layout'>(</span><span class='hs-varid'>borderWin</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'>deleteWindow</span> <span class='hs-varid'>borderWin</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="createInputWindow"></a><span class='hs-definition'>createInputWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Glyph</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Window</span>
<a name="line-143"></a><span class='hs-definition'>createInputWindow</span> <span class='hs-varid'>cursorGlyph</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-144"></a> <span class='hs-varid'>win</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkInputWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>r</span>
<a name="line-145"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>selectInput</span> <span class='hs-varid'>d</span> <span class='hs-varid'>win</span> <span class='hs-layout'>(</span><span class='hs-varid'>exposureMask</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>buttonPressMask</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-varid'>cursor</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>createFontCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>cursorGlyph</span>
<a name="line-147"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>defineCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>win</span> <span class='hs-varid'>cursor</span>
<a name="line-148"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeCursor</span> <span class='hs-varid'>d</span> <span class='hs-varid'>cursor</span>
<a name="line-149"></a> <span class='hs-varid'>showWindow</span> <span class='hs-varid'>win</span>
<a name="line-150"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>win</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="mkInputWindow"></a><span class='hs-definition'>mkInputWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>Window</span>
<a name="line-153"></a><span class='hs-definition'>mkInputWindow</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rectangle</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-154"></a> <span class='hs-varid'>rw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>asks</span> <span class='hs-varid'>theRoot</span>
<a name="line-155"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>screen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultScreenOfDisplay</span> <span class='hs-varid'>d</span>
<a name="line-156"></a> <span class='hs-varid'>visual</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultVisualOfScreen</span> <span class='hs-varid'>screen</span>
<a name="line-157"></a> <span class='hs-varid'>attrmask</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cWOverrideRedirect</span>
<a name="line-158"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>allocaSetWindowAttributes</span> <span class='hs-varop'>$</span>
<a name="line-159"></a> <span class='hs-keyglyph'>\</span><span class='hs-varid'>attributes</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-160"></a> <span class='hs-varid'>set_override_redirect</span> <span class='hs-varid'>attributes</span> <span class='hs-conid'>True</span>
<a name="line-161"></a> <span class='hs-varid'>createWindow</span> <span class='hs-varid'>d</span> <span class='hs-varid'>rw</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-num'>0</span> <span class='hs-num'>0</span> <span class='hs-varid'>inputOnly</span> <span class='hs-varid'>visual</span> <span class='hs-varid'>attrmask</span> <span class='hs-varid'>attributes</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="for"></a><span class='hs-definition'>for</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-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-164"></a><span class='hs-definition'>for</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>map</span>
</pre></body>
</html>
