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<a name="line-2"></a><span class='hs-comment'>{-# LINE 2 "./Graphics/UI/Gtk/Gdk/GC.chs" #-}</span>
<a name="line-3"></a><span class='hs-comment'>-- -*-haskell-*-</span>
<a name="line-4"></a><span class='hs-comment'>-- GIMP Toolkit (GTK) GC</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Author : Axel Simon</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Created: 28 September 2002</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- Copyright (C) 2002-2005 Axel Simon</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This library is free software; you can redistribute it and/or</span>
<a name="line-13"></a><span class='hs-comment'>-- modify it under the terms of the GNU Lesser General Public</span>
<a name="line-14"></a><span class='hs-comment'>-- License as published by the Free Software Foundation; either</span>
<a name="line-15"></a><span class='hs-comment'>-- version 2.1 of the License, or (at your option) any later version.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-- This library is distributed in the hope that it will be useful,</span>
<a name="line-18"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-19"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="line-20"></a><span class='hs-comment'>-- Lesser General Public License for more details.</span>
<a name="line-21"></a><span class='hs-comment'>--</span>
<a name="line-22"></a><span class='hs-comment'>-- |</span>
<a name="line-23"></a><span class='hs-comment'>-- Maintainer : gtk2hs-users@lists.sourceforge.net</span>
<a name="line-24"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-25"></a><span class='hs-comment'>-- Portability : portable (depends on GHC)</span>
<a name="line-26"></a><span class='hs-comment'>--</span>
<a name="line-27"></a><span class='hs-comment'>-- Graphics contexts - objects to encapsulate drawing properties</span>
<a name="line-28"></a><span class='hs-comment'>--</span>
<a name="line-29"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Gdk</span><span class='hs-varop'>.</span><span class='hs-conid'>GC</span> <span class='hs-layout'>(</span>
<a name="line-30"></a><span class='hs-comment'>-- * Detail</span>
<a name="line-31"></a><span class='hs-comment'>--</span>
<a name="line-32"></a><span class='hs-comment'>-- | All drawing operations in Gdk take a graphics context (GC) argument. A</span>
<a name="line-33"></a><span class='hs-comment'>-- graphics context encapsulates information about the way things are drawn,</span>
<a name="line-34"></a><span class='hs-comment'>-- such as the foreground color or line width. By using graphics contexts, the</span>
<a name="line-35"></a><span class='hs-comment'>-- number of arguments to each drawing call is greatly reduced, and</span>
<a name="line-36"></a><span class='hs-comment'>-- communication overhead is minimized, since identical arguments do not need</span>
<a name="line-37"></a><span class='hs-comment'>-- to be passed repeatedly.</span>
<a name="line-38"></a><span class='hs-comment'>--</span>
<a name="line-39"></a><span class='hs-comment'>-- Most values of a graphics context can be set at creation time by using</span>
<a name="line-40"></a><span class='hs-comment'>-- 'gcNewWithValues'. A few of the values in the GC, such as the dash</span>
<a name="line-41"></a><span class='hs-comment'>-- pattern, can only be set by the latter method.</span>
<a name="line-42"></a>
<a name="line-43"></a> <span class='hs-conid'>GC</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <span class='hs-conid'>GCClass</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-varid'>castToGC</span><span class='hs-layout'>,</span> <span class='hs-varid'>gTypeGC</span><span class='hs-layout'>,</span>
<a name="line-46"></a> <span class='hs-varid'>gcNew</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-conid'>GCValues</span><span class='hs-layout'>(</span><span class='hs-conid'>GCValues</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-varid'>newGCValues</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-conid'>Color</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>foreground</span><span class='hs-layout'>,</span>
<a name="line-51"></a> <span class='hs-varid'>background</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-conid'>Function</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-53"></a> <span class='hs-varid'>function</span><span class='hs-layout'>,</span>
<a name="line-54"></a> <span class='hs-conid'>Fill</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-55"></a> <span class='hs-varid'>fill</span><span class='hs-layout'>,</span>
<a name="line-56"></a> <span class='hs-varid'>tile</span><span class='hs-layout'>,</span>
<a name="line-57"></a> <span class='hs-varid'>stipple</span><span class='hs-layout'>,</span>
<a name="line-58"></a> <span class='hs-varid'>clipMask</span><span class='hs-layout'>,</span>
<a name="line-59"></a> <span class='hs-conid'>SubwindowMode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-60"></a> <span class='hs-varid'>subwindowMode</span><span class='hs-layout'>,</span>
<a name="line-61"></a> <span class='hs-varid'>tsXOrigin</span><span class='hs-layout'>,</span>
<a name="line-62"></a> <span class='hs-varid'>tsYOrigin</span><span class='hs-layout'>,</span>
<a name="line-63"></a> <span class='hs-varid'>clipXOrigin</span><span class='hs-layout'>,</span>
<a name="line-64"></a> <span class='hs-varid'>clipYOrigin</span><span class='hs-layout'>,</span>
<a name="line-65"></a> <span class='hs-varid'>graphicsExposure</span><span class='hs-layout'>,</span>
<a name="line-66"></a> <span class='hs-varid'>lineWidth</span><span class='hs-layout'>,</span>
<a name="line-67"></a> <span class='hs-conid'>LineStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-68"></a> <span class='hs-varid'>lineStyle</span><span class='hs-layout'>,</span>
<a name="line-69"></a> <span class='hs-conid'>CapStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-70"></a> <span class='hs-varid'>capStyle</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-conid'>JoinStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>joinStyle</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-varid'>gcNewWithValues</span><span class='hs-layout'>,</span>
<a name="line-74"></a> <span class='hs-varid'>gcSetValues</span><span class='hs-layout'>,</span>
<a name="line-75"></a> <span class='hs-varid'>gcGetValues</span><span class='hs-layout'>,</span>
<a name="line-76"></a> <span class='hs-varid'>gcSetClipRectangle</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>gcSetClipRegion</span><span class='hs-layout'>,</span>
<a name="line-78"></a> <span class='hs-varid'>gcSetDashes</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-79"></a>
<a name="line-80"></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>
<a name="line-81"></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'>fromJust</span><span class='hs-layout'>,</span> <span class='hs-varid'>isJust</span><span class='hs-layout'>)</span>
<a name="line-82"></a>
<a name="line-83"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>OldException</span> <span class='hs-layout'>(</span><span class='hs-varid'>handle</span><span class='hs-layout'>)</span>
<a name="line-84"></a>
<a name="line-85"></a>
<a name="line-86"></a>
<a name="line-87"></a>
<a name="line-88"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>FFI</span>
<a name="line-89"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>GObject</span> <span class='hs-layout'>(</span><span class='hs-varid'>constructNewGObject</span><span class='hs-layout'>)</span>
<a name="line-90"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-91"></a><span class='hs-comment'>{-# LINE 90 "./Graphics/UI/Gtk/Gdk/GC.chs" #-}</span>
<a name="line-92"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>General</span><span class='hs-varop'>.</span><span class='hs-conid'>Structs</span>
<a name="line-93"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>General</span><span class='hs-varop'>.</span><span class='hs-conid'>Enums</span> <span class='hs-layout'>(</span><span class='hs-conid'>Function</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Fill</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>SubwindowMode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>LineStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-94"></a> <span class='hs-conid'>CapStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>JoinStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-95"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Gdk</span><span class='hs-varop'>.</span><span class='hs-conid'>Region</span> <span class='hs-layout'>(</span><span class='hs-conid'>Region</span><span class='hs-layout'>(</span><span class='hs-conid'>Region</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-96"></a>
<a name="line-97"></a>
<a name="line-98"></a><span class='hs-comment'>{-# LINE 96 "./Graphics/UI/Gtk/Gdk/GC.chs" #-}</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="gcNew"></a><span class='hs-comment'>-- | Create an empty graphics context.</span>
<a name="line-101"></a><span class='hs-comment'>--</span>
<a name="line-102"></a><span class='hs-definition'>gcNew</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DrawableClass</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GC</span>
<a name="line-103"></a><span class='hs-definition'>gcNew</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-104"></a> <span class='hs-varid'>gcPtr</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>Drawable</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_new</span> <span class='hs-varid'>argPtr1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>toDrawable</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-105"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>gcPtr</span><span class='hs-varop'>==</span><span class='hs-varid'>nullPtr</span><span class='hs-layout'>)</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"gcNew: null graphics context."</span><span class='hs-layout'>)</span>
<a name="line-106"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>constructNewGObject</span> <span class='hs-varid'>mkGC</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varid'>gcPtr</span><span class='hs-layout'>)</span>
<a name="line-107"></a>
<a name="line-108"></a>
<a name="line-109"></a><a name="gcNewWithValues"></a><span class='hs-comment'>-- | Creates a graphics context with specific values.</span>
<a name="line-110"></a><span class='hs-comment'>--</span>
<a name="line-111"></a><span class='hs-definition'>gcNewWithValues</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DrawableClass</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GCValues</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GC</span>
<a name="line-112"></a><span class='hs-definition'>gcNewWithValues</span> <span class='hs-varid'>d</span> <span class='hs-varid'>gcv</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>allocaBytes</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>vPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-113"></a> <span class='hs-varid'>mask</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pokeGCValues</span> <span class='hs-varid'>vPtr</span> <span class='hs-varid'>gcv</span>
<a name="line-114"></a> <span class='hs-varid'>gc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>constructNewGObject</span> <span class='hs-varid'>mkGC</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>Drawable</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_new_with_values</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span><span class='hs-layout'>)</span>
<a name="line-115"></a><span class='hs-comment'>{-# LINE 112 "./Graphics/UI/Gtk/Gdk/GC.chs" #-}</span>
<a name="line-116"></a> <span class='hs-layout'>(</span><span class='hs-varid'>toDrawable</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>vPtr</span><span class='hs-layout'>)</span> <span class='hs-varid'>mask</span>
<a name="line-117"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>tile</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-118"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>tile</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-119"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>stipple</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-120"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>stipple</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-121"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>clipMask</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-122"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>clipMask</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-123"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>gc</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="gcSetValues"></a><span class='hs-comment'>-- | Change some of the values of a graphics context.</span>
<a name="line-126"></a><span class='hs-comment'>--</span>
<a name="line-127"></a><span class='hs-definition'>gcSetValues</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GC</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GCValues</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-128"></a><span class='hs-definition'>gcSetValues</span> <span class='hs-varid'>gc</span> <span class='hs-varid'>gcv</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>allocaBytes</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>vPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-129"></a> <span class='hs-varid'>mask</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pokeGCValues</span> <span class='hs-varid'>vPtr</span> <span class='hs-varid'>gcv</span>
<a name="line-130"></a> <span class='hs-varid'>gc</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>GC</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_set_values</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span><span class='hs-layout'>)</span> <span class='hs-varid'>gc</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>vPtr</span><span class='hs-layout'>)</span> <span class='hs-varid'>mask</span>
<a name="line-131"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>tile</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-132"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>tile</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-133"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>stipple</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-134"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>stipple</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-varid'>handle</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>clipMask</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-136"></a> <span class='hs-varid'>touchForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unPixmap</span><span class='hs-varop'>.</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-varid'>clipMask</span><span class='hs-layout'>)</span> <span class='hs-varid'>gcv</span><span class='hs-layout'>)</span>
<a name="line-137"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>gc</span>
<a name="line-138"></a>
<a name="line-139"></a><a name="gcGetValues"></a><span class='hs-comment'>-- | Retrieve the values in a graphics context.</span>
<a name="line-140"></a><span class='hs-comment'>--</span>
<a name="line-141"></a><span class='hs-definition'>gcGetValues</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GC</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GCValues</span>
<a name="line-142"></a><span class='hs-definition'>gcGetValues</span> <span class='hs-varid'>gc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>vPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-143"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>GC</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_get_values</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span><span class='hs-layout'>)</span> <span class='hs-varid'>gc</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>vPtr</span><span class='hs-layout'>)</span>
<a name="line-144"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>vPtr</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="gcSetClipRectangle"></a><span class='hs-comment'>-- | Set a clipping rectangle.</span>
<a name="line-147"></a><span class='hs-comment'>--</span>
<a name="line-148"></a><span class='hs-comment'>-- * All drawing operations are restricted to this rectangle. This rectangle</span>
<a name="line-149"></a><span class='hs-comment'>-- is interpreted relative to the clip origin.</span>
<a name="line-150"></a><span class='hs-comment'>--</span>
<a name="line-151"></a><span class='hs-definition'>gcSetClipRectangle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GC</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-152"></a><span class='hs-definition'>gcSetClipRectangle</span> <span class='hs-varid'>gc</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>with</span> <span class='hs-varid'>r</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rPtr</span> <span class='hs-keyglyph'>-></span>
<a name="line-153"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>GC</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_set_clip_rectangle</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span><span class='hs-layout'>)</span> <span class='hs-varid'>gc</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>rPtr</span><span class='hs-layout'>)</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="gcSetClipRegion"></a><span class='hs-comment'>-- | Set a clipping region.</span>
<a name="line-156"></a><span class='hs-comment'>--</span>
<a name="line-157"></a><span class='hs-comment'>-- * All drawing operations are restricted to this region. This region</span>
<a name="line-158"></a><span class='hs-comment'>-- is interpreted relative to the clip origin.</span>
<a name="line-159"></a><span class='hs-comment'>--</span>
<a name="line-160"></a><span class='hs-definition'>gcSetClipRegion</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GC</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Region</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-161"></a><span class='hs-definition'>gcSetClipRegion</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>GC</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Region</span> <span class='hs-varid'>arg2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg2</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr2</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_set_clip_region</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>argPtr2</span><span class='hs-layout'>)</span>
<a name="line-162"></a><span class='hs-comment'>{-# LINE 158 "./Graphics/UI/Gtk/Gdk/GC.chs" #-}</span>
<a name="line-163"></a>
<a name="line-164"></a><a name="gcSetDashes"></a><span class='hs-comment'>-- | Specify the pattern with which lines are drawn.</span>
<a name="line-165"></a><span class='hs-comment'>--</span>
<a name="line-166"></a><span class='hs-comment'>-- * Every tuple in the list contains an even and an odd segment. Even</span>
<a name="line-167"></a><span class='hs-comment'>-- segments are drawn normally, whereby the 'lineStyle'</span>
<a name="line-168"></a><span class='hs-comment'>-- member of the graphics context defines if odd segements are drawn</span>
<a name="line-169"></a><span class='hs-comment'>-- or not. A @phase@ argument greater than 0 will drop</span>
<a name="line-170"></a><span class='hs-comment'>-- @phase@ pixels before starting to draw.</span>
<a name="line-171"></a><span class='hs-comment'>--</span>
<a name="line-172"></a><span class='hs-definition'>gcSetDashes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GC</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</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'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-173"></a><span class='hs-definition'>gcSetDashes</span> <span class='hs-varid'>gc</span> <span class='hs-varid'>phase</span> <span class='hs-varid'>onOffList</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-174"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>onOff</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>CSChar</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-175"></a> <span class='hs-varid'>onOff</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>on</span><span class='hs-layout'>,</span><span class='hs-varid'>off</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>on</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>off</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-varid'>onOffList</span>
<a name="line-177"></a> <span class='hs-varid'>withArray</span> <span class='hs-varid'>onOff</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>aPtr</span> <span class='hs-keyglyph'>-></span>
<a name="line-178"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>GC</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_gc_set_dashes</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span><span class='hs-layout'>)</span> <span class='hs-varid'>gc</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>phase</span><span class='hs-layout'>)</span> <span class='hs-varid'>aPtr</span>
<a name="line-179"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>onOff</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-180"></a>
<a name="line-181"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_new"</span>
<a name="line-182"></a> <span class='hs-varid'>gdk_gc_new</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Drawable</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-183"></a>
<a name="line-184"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_new_with_values"</span>
<a name="line-185"></a> <span class='hs-varid'>gdk_gc_new_with_values</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Drawable</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-186"></a>
<a name="line-187"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_set_values"</span>
<a name="line-188"></a> <span class='hs-varid'>gdk_gc_set_values</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-189"></a>
<a name="line-190"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_get_values"</span>
<a name="line-191"></a> <span class='hs-varid'>gdk_gc_get_values</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-192"></a>
<a name="line-193"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_set_clip_rectangle"</span>
<a name="line-194"></a> <span class='hs-varid'>gdk_gc_set_clip_rectangle</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-195"></a>
<a name="line-196"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_set_clip_region"</span>
<a name="line-197"></a> <span class='hs-varid'>gdk_gc_set_clip_region</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Region</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-198"></a>
<a name="line-199"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_gc_set_dashes"</span>
<a name="line-200"></a> <span class='hs-varid'>gdk_gc_set_dashes</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GC</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>CSChar</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
</pre></body>
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