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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.Rendering.Chart.Renderable</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Tim Docker 2006, 2014</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see chart/COPYRIGHT)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- This module contains the definition of the 'Renderable' type, which</span>
<a name="line-8"></a><span class='hs-comment'>-- is a composable drawing element, along with assorted functions to</span>
<a name="line-9"></a><span class='hs-comment'>-- them.</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Renderable</span><span class='hs-layout'>(</span>
<a name="line-14"></a> <span class='hs-conid'>Renderable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-15"></a> <span class='hs-conid'>ToRenderable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-16"></a> <span class='hs-conid'>PickFn</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-conid'>RectCornerStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-19"></a>
<a name="line-20"></a> <span class='hs-varid'>rectangleToRenderable</span><span class='hs-layout'>,</span>
<a name="line-21"></a>
<a name="line-22"></a> <span class='hs-varid'>fillBackground</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>addMargins</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>emptyRenderable</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>embedRenderable</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>label</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>rlabel</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>spacer</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>spacer1</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>setPickFn</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>mapMaybePickFn</span><span class='hs-layout'>,</span>
<a name="line-32"></a> <span class='hs-varid'>mapPickFn</span><span class='hs-layout'>,</span>
<a name="line-33"></a> <span class='hs-varid'>nullPickFn</span><span class='hs-layout'>,</span>
<a name="line-34"></a>
<a name="line-35"></a> <span class='hs-varid'>rect_minsize</span><span class='hs-layout'>,</span>
<a name="line-36"></a> <span class='hs-varid'>rect_fillStyle</span><span class='hs-layout'>,</span>
<a name="line-37"></a> <span class='hs-varid'>rect_lineStyle</span><span class='hs-layout'>,</span>
<a name="line-38"></a> <span class='hs-varid'>rect_cornerStyle</span><span class='hs-layout'>,</span>
<a name="line-39"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Geometry</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Drawing</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="PickFn"></a><span class='hs-comment'>-- | A function that maps a point in device coordinates to some value.</span>
<a name="line-51"></a><a name="PickFn"></a><span class='hs-comment'>--</span>
<a name="line-52"></a><a name="PickFn"></a><span class='hs-comment'>-- Perhaps it might be generalised from Maybe a to</span>
<a name="line-53"></a><a name="PickFn"></a><span class='hs-comment'>-- (MonadPlus m ) => m a in the future.</span>
<a name="line-54"></a><a name="PickFn"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>PickFn</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="nullPickFn"></a><span class='hs-definition'>nullPickFn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PickFn</span> <span class='hs-varid'>a</span>
<a name="line-57"></a><span class='hs-definition'>nullPickFn</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-conid'>Nothing</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="Renderable"></a><span class='hs-comment'>-- | A Renderable is a record of functions required to layout a</span>
<a name="line-60"></a><a name="Renderable"></a><span class='hs-comment'>-- graphic element.</span>
<a name="line-61"></a><a name="Renderable"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-layout'>{</span>
<a name="line-62"></a>
<a name="line-63"></a> <span class='hs-comment'>-- | Calculate the minimum size of the renderable.</span>
<a name="line-64"></a> <span class='hs-varid'>minsize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>RectSize</span><span class='hs-layout'>,</span>
<a name="line-65"></a>
<a name="line-66"></a> <span class='hs-comment'>-- | Draw the renderable with a rectangle, which covers</span>
<a name="line-67"></a> <span class='hs-comment'>-- the origin to a given point.</span>
<a name="line-68"></a> <span class='hs-comment'>--</span>
<a name="line-69"></a> <span class='hs-comment'>-- The resulting "pick" function maps a point in the image to a value.</span>
<a name="line-70"></a> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RectSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-layout'>(</span><span class='hs-conid'>PickFn</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-layout'>}</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="ToRenderable"></a><span class='hs-comment'>-- | A type class abtracting the conversion of a value to a Renderable.</span>
<a name="line-74"></a><a name="ToRenderable"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>ToRenderable</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-75"></a> <span class='hs-varid'>toRenderable</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-conid'>()</span>
<a name="line-76"></a>
<a name="line-77"></a><a name="emptyRenderable"></a><span class='hs-definition'>emptyRenderable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-78"></a><span class='hs-definition'>emptyRenderable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>spacer</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="spacer"></a><span class='hs-comment'>-- | Create a blank renderable with a specified minimum size.</span>
<a name="line-81"></a><span class='hs-definition'>spacer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RectSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-82"></a><span class='hs-definition'>spacer</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-layout'>{</span>
<a name="line-83"></a> <span class='hs-varid'>minsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>sz</span><span class='hs-layout'>,</span>
<a name="line-84"></a> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>nullPickFn</span>
<a name="line-85"></a><span class='hs-layout'>}</span>
<a name="line-86"></a>
<a name="line-87"></a>
<a name="line-88"></a><a name="spacer1"></a><span class='hs-comment'>-- | Create a blank renderable with a minimum size the same as</span>
<a name="line-89"></a><span class='hs-comment'>-- some other renderable.</span>
<a name="line-90"></a><span class='hs-definition'>spacer1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>b</span>
<a name="line-91"></a><span class='hs-definition'>spacer1</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>nullPickFn</span> <span class='hs-layout'>}</span>
<a name="line-92"></a>
<a name="line-93"></a><a name="setPickFn"></a><span class='hs-comment'>-- | Replace the pick function of a renderable with another.</span>
<a name="line-94"></a><span class='hs-definition'>setPickFn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PickFn</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>b</span>
<a name="line-95"></a><span class='hs-definition'>setPickFn</span> <span class='hs-varid'>pickfn</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>render</span> <span class='hs-varid'>r</span> <span class='hs-varid'>sz</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-varid'>pickfn</span> <span class='hs-layout'>}</span>
<a name="line-96"></a>
<a name="line-97"></a><a name="mapMaybePickFn"></a><span class='hs-comment'>-- | Map a function over the result of a renderable's pickfunction, keeping only 'Just' results.</span>
<a name="line-98"></a><span class='hs-definition'>mapMaybePickFn</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-conid'>Maybe</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>b</span>
<a name="line-99"></a><span class='hs-definition'>mapMaybePickFn</span> <span class='hs-varid'>f</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>pf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>render</span> <span class='hs-varid'>r</span> <span class='hs-varid'>sz</span>
<a name="line-100"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>join</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pf</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="mapPickFn"></a><span class='hs-comment'>-- | Map a function over result of a renderable's pickfunction.</span>
<a name="line-103"></a><span class='hs-definition'>mapPickFn</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-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>b</span>
<a name="line-104"></a><span class='hs-definition'>mapPickFn</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapMaybePickFn</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="addMargins"></a><span class='hs-comment'>-- | Add some spacing at the edges of a renderable.</span>
<a name="line-107"></a><span class='hs-definition'>addMargins</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Double</span><span class='hs-layout'>,</span><span class='hs-conid'>Double</span><span class='hs-layout'>,</span><span class='hs-conid'>Double</span><span class='hs-layout'>,</span><span class='hs-conid'>Double</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ The spacing to be added.</span>
<a name="line-108"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ The source renderable.</span>
<a name="line-109"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-110"></a><span class='hs-definition'>addMargins</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>rd</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-layout'>{</span> <span class='hs-varid'>minsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mf</span><span class='hs-layout'>,</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rf</span> <span class='hs-layout'>}</span>
<a name="line-111"></a> <span class='hs-keyword'>where</span>
<a name="line-112"></a> <span class='hs-varid'>mf</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-113"></a> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>minsize</span> <span class='hs-varid'>rd</span>
<a name="line-114"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-varop'>+</span><span class='hs-varid'>l</span><span class='hs-varop'>+</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-varop'>+</span><span class='hs-varid'>t</span><span class='hs-varop'>+</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-115"></a>
<a name="line-116"></a> <span class='hs-varid'>rf</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-117"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>l</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-118"></a> <span class='hs-varid'>pickf</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>render</span> <span class='hs-varid'>rd</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-comment'>-</span><span class='hs-varid'>l</span><span class='hs-comment'>-</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-comment'>-</span><span class='hs-varid'>t</span><span class='hs-comment'>-</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-119"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkpickf</span> <span class='hs-varid'>pickf</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>l</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-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-120"></a>
<a name="line-121"></a> <span class='hs-varid'>mkpickf</span> <span class='hs-varid'>pickf</span> <span class='hs-layout'>(</span><span class='hs-varid'>t'</span><span class='hs-layout'>,</span><span class='hs-varid'>b'</span><span class='hs-layout'>,</span><span class='hs-varid'>l'</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-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-122"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>l'</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>x</span> <span class='hs-varop'><=</span> <span class='hs-varid'>w</span><span class='hs-comment'>-</span><span class='hs-varid'>r'</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>y</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>t'</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>t'</span> <span class='hs-varop'><=</span> <span class='hs-varid'>h</span><span class='hs-comment'>-</span><span class='hs-varid'>b'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pickf</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>l'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>t'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-123"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="fillBackground"></a><span class='hs-comment'>-- | Overlay a renderable over a solid background fill.</span>
<a name="line-126"></a><span class='hs-definition'>fillBackground</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FillStyle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-127"></a><span class='hs-definition'>fillBackground</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rf</span> <span class='hs-layout'>}</span>
<a name="line-128"></a> <span class='hs-keyword'>where</span>
<a name="line-129"></a> <span class='hs-varid'>rf</span> <span class='hs-varid'>rsize</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</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-130"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>fs</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-131"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>alignFillPath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rectPath</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-132"></a> <span class='hs-varid'>fillPath</span> <span class='hs-varid'>p</span>
<a name="line-133"></a> <span class='hs-varid'>render</span> <span class='hs-varid'>r</span> <span class='hs-varid'>rsize</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="embedRenderable"></a><span class='hs-comment'>-- | Helper function for using a renderable, when we generate it</span>
<a name="line-136"></a><span class='hs-comment'>-- in the ChartBackend monad.</span>
<a name="line-137"></a><span class='hs-definition'>embedRenderable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ChartBackend</span> <span class='hs-layout'>(</span><span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-138"></a><span class='hs-definition'>embedRenderable</span> <span class='hs-varid'>ca</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-layout'>{</span>
<a name="line-139"></a> <span class='hs-varid'>minsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ca</span><span class='hs-layout'>;</span> <span class='hs-varid'>minsize</span> <span class='hs-varid'>a</span> <span class='hs-layout'>}</span><span class='hs-layout'>,</span>
<a name="line-140"></a> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ca</span><span class='hs-layout'>;</span> <span class='hs-varid'>render</span> <span class='hs-varid'>a</span> <span class='hs-varid'>r</span> <span class='hs-layout'>}</span>
<a name="line-141"></a><span class='hs-layout'>}</span>
<a name="line-142"></a>
<a name="line-143"></a>
<a name="line-144"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-145"></a><span class='hs-comment'>-- Labels</span>
<a name="line-146"></a>
<a name="line-147"></a><a name="label"></a><span class='hs-comment'>-- | Construct a renderable from a text string, aligned with the axes.</span>
<a name="line-148"></a><span class='hs-definition'>label</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FontStyle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-conid'>String</span>
<a name="line-149"></a><span class='hs-definition'>label</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rlabel</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-num'>0</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="rlabel"></a><span class='hs-comment'>-- | Construct a renderable from a text string, rotated wrt to axes. The angle</span>
<a name="line-152"></a><span class='hs-comment'>-- of rotation is in degrees, measured clockwise from the horizontal.</span>
<a name="line-153"></a><span class='hs-definition'>rlabel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FontStyle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-conid'>String</span>
<a name="line-154"></a><span class='hs-definition'>rlabel</span> <span class='hs-varid'>fs</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>rot</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-layout'>{</span> <span class='hs-varid'>minsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mf</span><span class='hs-layout'>,</span> <span class='hs-varid'>render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rf</span> <span class='hs-layout'>}</span>
<a name="line-155"></a> <span class='hs-keyword'>where</span>
<a name="line-156"></a> <span class='hs-varid'>mf</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withFontStyle</span> <span class='hs-varid'>fs</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-157"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>s</span>
<a name="line-158"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span><span class='hs-layout'>,</span> <span class='hs-varid'>textSizeHeight</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-159"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>xwid</span> <span class='hs-varid'>sz</span><span class='hs-layout'>,</span> <span class='hs-varid'>ywid</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span>
<a name="line-160"></a>
<a name="line-161"></a> <span class='hs-varid'>rf</span> <span class='hs-layout'>(</span><span class='hs-varid'>w0</span><span class='hs-layout'>,</span><span class='hs-varid'>h0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withFontStyle</span> <span class='hs-varid'>fs</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-162"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>s</span>
<a name="line-163"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sz</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span><span class='hs-layout'>,</span> <span class='hs-varid'>textSizeHeight</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-164"></a> <span class='hs-varid'>descent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>textSizeDescent</span> <span class='hs-varid'>ts</span>
<a name="line-165"></a>
<a name="line-166"></a> <span class='hs-varid'>xadj</span> <span class='hs-conid'>HTA_Left</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xwid</span> <span class='hs-varid'>sz</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-167"></a> <span class='hs-varid'>xadj</span> <span class='hs-conid'>HTA_Centre</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w0</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-168"></a> <span class='hs-varid'>xadj</span> <span class='hs-conid'>HTA_Right</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w0</span> <span class='hs-comment'>-</span> <span class='hs-varid'>xwid</span> <span class='hs-varid'>sz</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-169"></a>
<a name="line-170"></a> <span class='hs-varid'>yadj</span> <span class='hs-conid'>VTA_Top</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ywid</span> <span class='hs-varid'>sz</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-171"></a> <span class='hs-varid'>yadj</span> <span class='hs-conid'>VTA_Centre</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h0</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-172"></a> <span class='hs-varid'>yadj</span> <span class='hs-conid'>VTA_Bottom</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h0</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ywid</span> <span class='hs-varid'>sz</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-173"></a> <span class='hs-varid'>yadj</span> <span class='hs-conid'>VTA_BaseLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h0</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ywid</span> <span class='hs-varid'>sz</span><span class='hs-varop'>/</span><span class='hs-num'>2</span> <span class='hs-varop'>+</span> <span class='hs-varid'>descent</span><span class='hs-varop'>*</span><span class='hs-varid'>acr</span>
<a name="line-174"></a>
<a name="line-175"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-varid'>descent</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-176"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>xadj</span> <span class='hs-varid'>hta</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>yadj</span> <span class='hs-varid'>vta</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-177"></a> <span class='hs-varid'>withRotation</span> <span class='hs-varid'>rot'</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-178"></a> <span class='hs-varid'>drawText</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-varid'>w</span><span class='hs-varop'>/</span><span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-varop'>/</span><span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-179"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- PickFn String</span>
<a name="line-180"></a>
<a name="line-181"></a> <span class='hs-varid'>rot'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rot</span> <span class='hs-varop'>/</span> <span class='hs-num'>180</span> <span class='hs-varop'>*</span> <span class='hs-varid'>pi</span>
<a name="line-182"></a> <span class='hs-layout'>(</span><span class='hs-varid'>cr</span><span class='hs-layout'>,</span><span class='hs-varid'>sr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>cos</span> <span class='hs-varid'>rot'</span><span class='hs-layout'>,</span> <span class='hs-varid'>sin</span> <span class='hs-varid'>rot'</span><span class='hs-layout'>)</span>
<a name="line-183"></a> <span class='hs-layout'>(</span><span class='hs-varid'>acr</span><span class='hs-layout'>,</span><span class='hs-varid'>asr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>abs</span> <span class='hs-varid'>cr</span><span class='hs-layout'>,</span> <span class='hs-varid'>abs</span> <span class='hs-varid'>sr</span><span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a> <span class='hs-varid'>xwid</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w</span><span class='hs-varop'>*</span><span class='hs-varid'>acr</span> <span class='hs-varop'>+</span> <span class='hs-varid'>h</span><span class='hs-varop'>*</span><span class='hs-varid'>asr</span>
<a name="line-186"></a> <span class='hs-varid'>ywid</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w</span><span class='hs-varop'>*</span><span class='hs-varid'>asr</span> <span class='hs-varop'>+</span> <span class='hs-varid'>h</span><span class='hs-varop'>*</span><span class='hs-varid'>acr</span>
<a name="line-187"></a>
<a name="line-188"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-189"></a><span class='hs-comment'>-- Rectangles</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="RectCornerStyle"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RectCornerStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RCornerSquare</span>
<a name="line-192"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RCornerBevel</span> <span class='hs-conid'>Double</span>
<a name="line-193"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RCornerRounded</span> <span class='hs-conid'>Double</span>
<a name="line-194"></a>
<a name="line-195"></a><a name="Rectangle"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span> <span class='hs-layout'>{</span>
<a name="line-196"></a> <span class='hs-sel'>_rect_minsize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RectSize</span><span class='hs-layout'>,</span>
<a name="line-197"></a> <span class='hs-sel'>_rect_fillStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>FillStyle</span><span class='hs-layout'>,</span>
<a name="line-198"></a> <span class='hs-sel'>_rect_lineStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>LineStyle</span><span class='hs-layout'>,</span>
<a name="line-199"></a> <span class='hs-sel'>_rect_cornerStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RectCornerStyle</span>
<a name="line-200"></a><span class='hs-layout'>}</span>
<a name="line-201"></a>
<a name="line-202"></a><a name="instance%20Default%20Rectangle"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Default</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyword'>where</span>
<a name="line-203"></a> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Rectangle</span>
<a name="line-204"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_rect_minsize</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-205"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_rect_fillStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-206"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_rect_lineStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-207"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_rect_cornerStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RCornerSquare</span>
<a name="line-208"></a> <span class='hs-layout'>}</span>
<a name="line-209"></a>
<a name="line-210"></a><a name="instance%20ToRenderable%20Rectangle"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToRenderable</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyword'>where</span>
<a name="line-211"></a> <span class='hs-varid'>toRenderable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rectangleToRenderable</span>
<a name="line-212"></a>
<a name="line-213"></a><a name="rectangleToRenderable"></a><span class='hs-definition'>rectangleToRenderable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rectangle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>a</span>
<a name="line-214"></a><span class='hs-definition'>rectangleToRenderable</span> <span class='hs-varid'>rectangle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Renderable</span> <span class='hs-varid'>mf</span> <span class='hs-varid'>rf</span>
<a name="line-215"></a> <span class='hs-keyword'>where</span>
<a name="line-216"></a> <span class='hs-varid'>mf</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-sel'>_rect_minsize</span> <span class='hs-varid'>rectangle</span><span class='hs-layout'>)</span>
<a name="line-217"></a> <span class='hs-varid'>rf</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-218"></a> <span class='hs-varid'>maybeM</span> <span class='hs-conid'>()</span> <span class='hs-layout'>(</span><span class='hs-varid'>fill</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-sel'>_rect_fillStyle</span> <span class='hs-varid'>rectangle</span><span class='hs-layout'>)</span>
<a name="line-219"></a> <span class='hs-varid'>maybeM</span> <span class='hs-conid'>()</span> <span class='hs-layout'>(</span><span class='hs-varid'>stroke</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-sel'>_rect_lineStyle</span> <span class='hs-varid'>rectangle</span><span class='hs-layout'>)</span>
<a name="line-220"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>nullPickFn</span>
<a name="line-221"></a>
<a name="line-222"></a> <span class='hs-varid'>fill</span> <span class='hs-varid'>sz</span> <span class='hs-varid'>fs</span> <span class='hs-keyglyph'>=</span>
<a name="line-223"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>fs</span> <span class='hs-varop'>$</span>
<a name="line-224"></a> <span class='hs-varid'>fillPath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>strokeRectangleP</span> <span class='hs-varid'>sz</span> <span class='hs-layout'>(</span><span class='hs-sel'>_rect_cornerStyle</span> <span class='hs-varid'>rectangle</span><span class='hs-layout'>)</span>
<a name="line-225"></a>
<a name="line-226"></a> <span class='hs-varid'>stroke</span> <span class='hs-varid'>sz</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span>
<a name="line-227"></a> <span class='hs-varid'>withLineStyle</span> <span class='hs-varid'>ls</span> <span class='hs-varop'>$</span>
<a name="line-228"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>strokeRectangleP</span> <span class='hs-varid'>sz</span> <span class='hs-layout'>(</span><span class='hs-sel'>_rect_cornerStyle</span> <span class='hs-varid'>rectangle</span><span class='hs-layout'>)</span>
<a name="line-229"></a>
<a name="line-230"></a> <span class='hs-varid'>strokeRectangleP</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span> <span class='hs-conid'>RCornerSquare</span> <span class='hs-keyglyph'>=</span>
<a name="line-231"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>moveTo'</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>y1</span>
<a name="line-232"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>y2</span>
<a name="line-233"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>y2</span>
<a name="line-234"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>y1</span>
<a name="line-235"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>y1</span>
<a name="line-236"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>y2</span>
<a name="line-237"></a>
<a name="line-238"></a> <span class='hs-varid'>strokeRectangleP</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>RCornerBevel</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-239"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>moveTo'</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-240"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-241"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>y2</span>
<a name="line-242"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>y2</span>
<a name="line-243"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-244"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-245"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>y1</span>
<a name="line-246"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>y1</span>
<a name="line-247"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-248"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-249"></a>
<a name="line-250"></a> <span class='hs-varid'>strokeRectangleP</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>RCornerRounded</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-251"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>arcNeg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>pi2</span><span class='hs-varop'>*</span><span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>pi2</span>
<a name="line-252"></a> <span class='hs-varop'><></span> <span class='hs-varid'>arcNeg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>pi2</span> <span class='hs-num'>0</span>
<a name="line-253"></a> <span class='hs-varop'><></span> <span class='hs-varid'>arcNeg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>pi2</span><span class='hs-varop'>*</span><span class='hs-num'>3</span><span class='hs-layout'>)</span>
<a name="line-254"></a> <span class='hs-varop'><></span> <span class='hs-varid'>arcNeg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-varop'>+</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>pi2</span><span class='hs-varop'>*</span><span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>pi2</span><span class='hs-varop'>*</span><span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-255"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-comment'>-</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-256"></a>
<a name="line-257"></a> <span class='hs-varid'>pi2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pi</span> <span class='hs-varop'>/</span> <span class='hs-num'>2</span>
<a name="line-258"></a>
<a name="line-259"></a><span class='hs-varop'>$</span><span class='hs-layout'>(</span> <span class='hs-varid'>makeLenses</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>Rectangle</span> <span class='hs-layout'>)</span>
</pre></body>
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