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<title>Graphics/Gloss/Internals/Interface/Backend/Types.hs</title>
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<pre><a name="line-1"></a>
<a name="line-2"></a><span class='hs-comment'>{-# OPTIONS -fspec-constr-count=5 #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-4"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Backend</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-5"></a>        <span class='hs-layout'>(</span> <span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Backend</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-6"></a>        <span class='hs-layout'>,</span> <span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Display</span><span class='hs-layout'>)</span>
<a name="line-7"></a><span class='hs-keyword'>where</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IORef</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Display</span>
<a name="line-10"></a>
<a name="line-11"></a>
<a name="line-12"></a><a name="Backend"></a><span class='hs-comment'>-- | The functions every backend window managed backend needs to support.</span>
<a name="line-13"></a><a name="Backend"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><a name="Backend"></a><span class='hs-comment'>--   The Backend module interfaces with the window manager, and handles opening</span>
<a name="line-15"></a><a name="Backend"></a><span class='hs-comment'>--   and closing the window, and managing key events etc.</span>
<a name="line-16"></a><a name="Backend"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><a name="Backend"></a><span class='hs-comment'>--   It doesn't know anything about drawing lines or setting colors.</span>
<a name="line-18"></a><a name="Backend"></a><span class='hs-comment'>--   When we get a display callback, Gloss will perform OpenGL actions, and</span>
<a name="line-19"></a><a name="Backend"></a><span class='hs-comment'>--   the backend needs to have OpenGL in a state where it's able to accept them.</span>
<a name="line-20"></a><a name="Backend"></a><span class='hs-comment'>--</span>
<a name="line-21"></a><a name="Backend"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>        <span class='hs-comment'>-- | Initialize the state used by the backend. If you don't use any state,</span>
<a name="line-23"></a>        <span class='hs-comment'>-- make a Unit-like type; see the GLUT backend for an example.</span>
<a name="line-24"></a>        <span class='hs-varid'>initBackendState</span>           <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span>
<a name="line-25"></a>
<a name="line-26"></a>        <span class='hs-comment'>-- | Perform any initialization that needs to happen before opening a window</span>
<a name="line-27"></a>        <span class='hs-comment'>--   The Boolean flag indicates if any debug information should be printed to</span>
<a name="line-28"></a>        <span class='hs-comment'>--   the terminal</span>
<a name="line-29"></a>        <span class='hs-varid'>initializeBackend</span>          <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-30"></a>
<a name="line-31"></a>        <span class='hs-comment'>-- | Perform any deinitialization and close the backend.</span>
<a name="line-32"></a>        <span class='hs-varid'>exitBackend</span>                <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-33"></a>
<a name="line-34"></a>        <span class='hs-comment'>-- | Open a window with the given display mode.</span>
<a name="line-35"></a>        <span class='hs-varid'>openWindow</span>                 <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-36"></a>
<a name="line-37"></a>        <span class='hs-comment'>-- | Dump information about the backend to the terminal.</span>
<a name="line-38"></a>        <span class='hs-varid'>dumpBackendState</span>           <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-39"></a>
<a name="line-40"></a>        <span class='hs-comment'>-- | Install the display callbacks.</span>
<a name="line-41"></a>        <span class='hs-varid'>installDisplayCallback</span>     <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Callback</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-42"></a>
<a name="line-43"></a>        <span class='hs-comment'>-- | Install the window close callback.</span>
<a name="line-44"></a>        <span class='hs-varid'>installWindowCloseCallback</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-45"></a>
<a name="line-46"></a>        <span class='hs-comment'>-- | Install the reshape callbacks.</span>
<a name="line-47"></a>        <span class='hs-varid'>installReshapeCallback</span>     <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Callback</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-48"></a>
<a name="line-49"></a>        <span class='hs-comment'>-- | Install the keymouse press callbacks.</span>
<a name="line-50"></a>        <span class='hs-varid'>installKeyMouseCallback</span>    <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Callback</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-51"></a>
<a name="line-52"></a>        <span class='hs-comment'>-- | Install the mouse motion callbacks.</span>
<a name="line-53"></a>        <span class='hs-varid'>installMotionCallback</span>      <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Callback</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-54"></a>
<a name="line-55"></a>        <span class='hs-comment'>-- | Install the idle callbacks.</span>
<a name="line-56"></a>        <span class='hs-varid'>installIdleCallback</span>        <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Callback</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-57"></a>
<a name="line-58"></a>        <span class='hs-comment'>-- | The mainloop of the backend.</span>
<a name="line-59"></a>        <span class='hs-varid'>runMainLoop</span>                <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-60"></a>
<a name="line-61"></a>        <span class='hs-comment'>-- | A function that signals that screen has to be updated.</span>
<a name="line-62"></a>        <span class='hs-varid'>postRedisplay</span>              <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-63"></a>
<a name="line-64"></a>        <span class='hs-comment'>-- | Function that returns (width,height) of the window in pixels.</span>
<a name="line-65"></a>        <span class='hs-varid'>getWindowDimensions</span>        <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-66"></a>
<a name="line-67"></a>        <span class='hs-comment'>-- | Function that reports the time elapsed since the application started.</span>
<a name="line-68"></a>        <span class='hs-comment'>--   (in seconds)</span>
<a name="line-69"></a>        <span class='hs-varid'>elapsedTime</span>                <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Double</span>
<a name="line-70"></a>
<a name="line-71"></a>        <span class='hs-comment'>-- | Function that puts the current thread to sleep for 'n' seconds.</span>
<a name="line-72"></a>        <span class='hs-varid'>sleep</span>                      <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-73"></a>
<a name="line-74"></a>
<a name="line-75"></a><span class='hs-comment'>-- The callbacks should work for all backends. We pass a reference to the</span>
<a name="line-76"></a><span class='hs-comment'>-- backend state so that the callbacks have access to the class dictionary and</span>
<a name="line-77"></a><span class='hs-comment'>-- can thus call the appropriate backend functions.</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="DisplayCallback"></a><span class='hs-comment'>-- | Display callback has no arguments.</span>
<a name="line-80"></a><a name="DisplayCallback"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>DisplayCallback</span>       <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="KeyboardMouseCallback"></a><span class='hs-comment'>-- | Arguments: KeyType, Key Up \/ Down, Ctrl \/ Alt \/ Shift pressed, latest mouse location.</span>
<a name="line-83"></a><a name="KeyboardMouseCallback"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>KeyboardMouseCallback</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Key</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>KeyState</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Modifiers</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="MotionCallback"></a><span class='hs-comment'>-- | Arguments: (PosX,PosY) in pixels.</span>
<a name="line-86"></a><a name="MotionCallback"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>MotionCallback</span>        <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="IdleCallback"></a><span class='hs-comment'>-- | No arguments.</span>
<a name="line-89"></a><a name="IdleCallback"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>IdleCallback</span>          <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="ReshapeCallback"></a><span class='hs-comment'>-- | Arguments: (Width,Height) in pixels.</span>
<a name="line-92"></a><a name="ReshapeCallback"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ReshapeCallback</span>       <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>a</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Backend</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>IORef</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-93"></a>
<a name="line-94"></a>
<a name="line-95"></a><a name="Callback"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Callback</span>
<a name="line-96"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Display</span>  <span class='hs-conid'>DisplayCallback</span>
<a name="line-97"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyMouse</span> <span class='hs-conid'>KeyboardMouseCallback</span>
<a name="line-98"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Idle</span>     <span class='hs-conid'>IdleCallback</span>
<a name="line-99"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Motion</span>   <span class='hs-conid'>MotionCallback</span>
<a name="line-100"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Reshape</span>  <span class='hs-conid'>ReshapeCallback</span>
<a name="line-101"></a>
<a name="line-102"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-103"></a><span class='hs-comment'>-- This is Glosses view of mouse and keyboard events.</span>
<a name="line-104"></a><span class='hs-comment'>-- The actual events provided by the backends are converted to this form</span>
<a name="line-105"></a><span class='hs-comment'>-- by the backend module.</span>
<a name="line-106"></a> 
<a name="line-107"></a><a name="Key"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Key</span>
<a name="line-108"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Char</span>        <span class='hs-conid'>Char</span>
<a name="line-109"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SpecialKey</span>  <span class='hs-conid'>SpecialKey</span>
<a name="line-110"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MouseButton</span> <span class='hs-conid'>MouseButton</span>
<a name="line-111"></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'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="MouseButton"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MouseButton</span>
<a name="line-114"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LeftButton</span>
<a name="line-115"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MiddleButton</span>
<a name="line-116"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RightButton</span>
<a name="line-117"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>WheelUp</span>
<a name="line-118"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>WheelDown</span>
<a name="line-119"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AdditionalButton</span> <span class='hs-conid'>Int</span>
<a name="line-120"></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'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="KeyState"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>KeyState</span>
<a name="line-123"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Down</span>
<a name="line-124"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Up</span>
<a name="line-125"></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'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="SpecialKey"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SpecialKey</span>
<a name="line-128"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>KeyUnknown</span>
<a name="line-129"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeySpace</span>
<a name="line-130"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyEsc</span>
<a name="line-131"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF1</span>
<a name="line-132"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF2</span>
<a name="line-133"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF3</span>
<a name="line-134"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF4</span>
<a name="line-135"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF5</span>
<a name="line-136"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF6</span>
<a name="line-137"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF7</span>
<a name="line-138"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF8</span>
<a name="line-139"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF9</span>
<a name="line-140"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF10</span>
<a name="line-141"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF11</span>
<a name="line-142"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF12</span>
<a name="line-143"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF13</span>
<a name="line-144"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF14</span>
<a name="line-145"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF15</span>
<a name="line-146"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF16</span>
<a name="line-147"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF17</span>
<a name="line-148"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF18</span>
<a name="line-149"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF19</span>
<a name="line-150"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF20</span>
<a name="line-151"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF21</span>
<a name="line-152"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF22</span>
<a name="line-153"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF23</span>
<a name="line-154"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF24</span>
<a name="line-155"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyF25</span>
<a name="line-156"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyUp</span>
<a name="line-157"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyDown</span>
<a name="line-158"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyLeft</span>
<a name="line-159"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyRight</span>
<a name="line-160"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyTab</span>
<a name="line-161"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyEnter</span>
<a name="line-162"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyBackspace</span>
<a name="line-163"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyInsert</span>
<a name="line-164"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyNumLock</span>
<a name="line-165"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyBegin</span>
<a name="line-166"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyDelete</span>
<a name="line-167"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPageUp</span>
<a name="line-168"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPageDown</span>
<a name="line-169"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyHome</span>
<a name="line-170"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyEnd</span>
<a name="line-171"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad0</span>
<a name="line-172"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad1</span>
<a name="line-173"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad2</span>
<a name="line-174"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad3</span>
<a name="line-175"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad4</span>
<a name="line-176"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad5</span>
<a name="line-177"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad6</span>
<a name="line-178"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad7</span>
<a name="line-179"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad8</span>
<a name="line-180"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPad9</span>
<a name="line-181"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadDivide</span>
<a name="line-182"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadMultiply</span>
<a name="line-183"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadSubtract</span>
<a name="line-184"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadAdd</span>
<a name="line-185"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadDecimal</span>
<a name="line-186"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadEqual</span>
<a name="line-187"></a>        <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeyPadEnter</span>
<a name="line-188"></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'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-189"></a>
<a name="line-190"></a><a name="Modifiers"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Modifiers</span>
<a name="line-191"></a>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Modifiers</span>
<a name="line-192"></a>        <span class='hs-layout'>{</span> <span class='hs-varid'>shift</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>KeyState</span>
<a name="line-193"></a>        <span class='hs-layout'>,</span> <span class='hs-varid'>ctrl</span>  <span class='hs-keyglyph'>::</span> <span class='hs-conid'>KeyState</span>
<a name="line-194"></a>        <span class='hs-layout'>,</span> <span class='hs-varid'>alt</span>   <span class='hs-keyglyph'>::</span> <span class='hs-conid'>KeyState</span>
<a name="line-195"></a>        <span class='hs-layout'>}</span>
<a name="line-196"></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'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
</pre></body>
</html>