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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Graphics.HGL.Internals.Types</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Alastair Reid, 1999-2003</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/base/LICENSE)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : libraries@haskell.org</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : internal</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Basic types for a simple graphics library.</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-comment'>-- #hide</span>
<a name="line-16"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>HGL</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-keyword'>where</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-cpp'>#if !X_DISPLAY_MISSING</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>X11</span><span class='hs-varop'>.</span><span class='hs-conid'>Xlib</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>X</span>
<a name="line-20"></a><span class='hs-cpp'>#else</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Win32</span><span class='hs-varop'>.</span><span class='hs-conid'>Misc</span><span class='hs-layout'>(</span><span class='hs-varid'>timeGetTime</span><span class='hs-layout'>)</span>
<a name="line-22"></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'>liftM</span> <span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-cpp'>#endif</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Ix</span><span class='hs-layout'>(</span><span class='hs-conid'>Ix</span><span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span><span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-29"></a><span class='hs-comment'>-- Units</span>
<a name="line-30"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="Dimension"></a><span class='hs-comment'>-- | A distance on the screen, measured in pixels.</span>
<a name="line-33"></a><a name="Dimension"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Dimension</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-34"></a><a name="Point"></a><span class='hs-comment'>-- | A position within a window, measured in pixels to the right and down</span>
<a name="line-35"></a><a name="Point"></a><span class='hs-comment'>-- from the top left corner.</span>
<a name="line-36"></a><a name="Point"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Point</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>
<a name="line-37"></a><a name="Size"></a><span class='hs-comment'>-- | A (width, height) pair, both measured in pixels.</span>
<a name="line-38"></a><a name="Size"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Size</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>
<a name="line-39"></a><a name="Angle"></a><span class='hs-comment'>-- | An angle in degrees (0 to 360).</span>
<a name="line-40"></a><a name="Angle"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Angle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Double</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="Time"></a><span class='hs-comment'>-- | Time, measured in milliseconds.</span>
<a name="line-43"></a><a name="Time"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Time</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Integer</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="getTime"></a><span class='hs-comment'>-- | Time in milliseconds since some arbitrary epoch.</span>
<a name="line-46"></a><span class='hs-definition'>getTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Integer</span>
<a name="line-47"></a><span class='hs-cpp'>#if !X_DISPLAY_MISSING</span>
<a name="line-48"></a><span class='hs-definition'>getTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>X</span><span class='hs-varop'>.</span><span class='hs-varid'>gettimeofday_in_milliseconds</span>
<a name="line-49"></a><span class='hs-cpp'>#else</span>
<a name="line-50"></a><span class='hs-definition'>getTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-varid'>toInteger</span> <span class='hs-varid'>timeGetTime</span>
<a name="line-51"></a><span class='hs-cpp'>#endif</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='hs-comment'>---------------------------------------------------------------</span>
<a name="line-54"></a><span class='hs-comment'>-- Drawing</span>
<a name="line-55"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="RGB"></a><span class='hs-comment'>-- | A color, comprising red, green and blue components.</span>
<a name="line-58"></a><a name="RGB"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RGB</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RGB</span> <span class='hs-conid'>Word8</span> <span class='hs-conid'>Word8</span> <span class='hs-conid'>Word8</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="Style"></a><span class='hs-comment'>-- | The style of line drawn by a pen.</span>
<a name="line-61"></a><a name="Style"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Style</span>
<a name="line-62"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Solid</span>
<a name="line-63"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Dash</span> <span class='hs-comment'>-- "-------"</span>
<a name="line-64"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Dot</span> <span class='hs-comment'>-- "......."</span>
<a name="line-65"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DashDot</span> <span class='hs-comment'>-- "_._._._"</span>
<a name="line-66"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DashDotDot</span> <span class='hs-comment'>-- "_.._.._"</span>
<a name="line-67"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Null</span>
<a name="line-68"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>InsideFrame</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="BkMode"></a><span class='hs-comment'>-- | Background mode for drawing text.</span>
<a name="line-71"></a><a name="BkMode"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BkMode</span>
<a name="line-72"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Opaque</span> <span class='hs-comment'>-- ^ Draw text on a bounding rectangle filled with the</span>
<a name="line-73"></a> <span class='hs-comment'>-- current background color.</span>
<a name="line-74"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Transparent</span> <span class='hs-comment'>-- ^ Draw text without a background rectangle.</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="Alignment"></a><span class='hs-comment'>-- | How strings drawn with 'Graphics.HGL.Draw.Text.text' are positioned</span>
<a name="line-77"></a><a name="Alignment"></a><span class='hs-comment'>-- relative to the specified reference point.</span>
<a name="line-78"></a><a name="Alignment"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Alignment</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>HAlign</span><span class='hs-layout'>,</span> <span class='hs-conid'>VAlign</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="HAlign"></a><span class='hs-comment'>-- | Horizontal alignment of text.</span>
<a name="line-81"></a><a name="HAlign"></a><span class='hs-comment'>-- Names have a tick to distinguish them from "Prelude" names.</span>
<a name="line-82"></a><a name="HAlign"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>HAlign</span>
<a name="line-83"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left'</span> <span class='hs-comment'>-- ^ align the left edge of the text with the reference point</span>
<a name="line-84"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Center</span> <span class='hs-comment'>-- ^ center the text with the reference point</span>
<a name="line-85"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Right'</span> <span class='hs-comment'>-- ^ align the right edge of the text with the reference point</span>
<a name="line-86"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Enum</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> <span class='hs-conid'>Ix</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="VAlign"></a><span class='hs-comment'>-- | Vertical alignment of text.</span>
<a name="line-89"></a><a name="VAlign"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>VAlign</span>
<a name="line-90"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Top</span> <span class='hs-comment'>-- ^ align the top edge of the text with the reference point</span>
<a name="line-91"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Baseline</span> <span class='hs-comment'>-- ^ align the baseline of the text with the reference point</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Bottom</span> <span class='hs-comment'>-- ^ align the bottom edge of the text with the reference point</span>
<a name="line-93"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Enum</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> <span class='hs-conid'>Ix</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-94"></a>
<a name="line-95"></a><span class='hs-comment'>---------------------------------------------------------------</span>
<a name="line-96"></a><span class='hs-comment'>-- Windows</span>
<a name="line-97"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-98"></a>
<a name="line-99"></a><a name="Title"></a><span class='hs-comment'>-- | Title of a window.</span>
<a name="line-100"></a><a name="Title"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Title</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="RedrawMode"></a><span class='hs-comment'>-- | How to draw in a window.</span>
<a name="line-103"></a><a name="RedrawMode"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RedrawMode</span>
<a name="line-104"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DoubleBuffered</span> <span class='hs-comment'>-- ^ use a /double buffer/ to reduce flicker.</span>
<a name="line-105"></a> <span class='hs-comment'>-- You should probably use this for animations.</span>
<a name="line-106"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Unbuffered</span> <span class='hs-comment'>-- ^ draw directly to the window.</span>
<a name="line-107"></a> <span class='hs-comment'>-- This runs slightly faster but is more prone</span>
<a name="line-108"></a> <span class='hs-comment'>-- to flicker.</span>
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