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<title>Graphics/Rendering/Chart/Plot/Bars.hs</title>
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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.Plot.Bars</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'>-- Bar Charts</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-10"></a>
<a name="line-11"></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'>Plot</span><span class='hs-varop'>.</span><span class='hs-conid'>Bars</span><span class='hs-layout'>(</span>
<a name="line-12"></a> <span class='hs-conid'>PlotBars</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-13"></a> <span class='hs-conid'>PlotBarsStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-14"></a> <span class='hs-conid'>PlotBarsSpacing</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'>PlotBarsAlignment</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'>BarsPlotValue</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-17"></a>
<a name="line-18"></a> <span class='hs-varid'>plotBars</span><span class='hs-layout'>,</span>
<a name="line-19"></a> <span class='hs-varid'>plot_bars_style</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-varid'>plot_bars_item_styles</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>plot_bars_titles</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>plot_bars_spacing</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>plot_bars_alignment</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>plot_bars_reference</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>plot_bars_singleton_width</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>plot_bars_values</span><span class='hs-layout'>,</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-29"></a>
<a name="line-30"></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-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-layout'>(</span><span class='hs-varid'>nub</span><span class='hs-layout'>,</span><span class='hs-varid'>sort</span><span class='hs-layout'>)</span>
<a name="line-33"></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> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>x0</span><span class='hs-layout'>,</span> <span class='hs-varid'>y0</span><span class='hs-layout'>)</span>
<a name="line-34"></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-35"></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'>Plot</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-36"></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'>Axis</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span> <span class='hs-layout'>(</span><span class='hs-varid'>opaque</span><span class='hs-layout'>)</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-varop'>.</span><span class='hs-conid'>Names</span> <span class='hs-layout'>(</span><span class='hs-varid'>black</span><span class='hs-layout'>)</span>
<a name="line-39"></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-40"></a>
<a name="line-41"></a><a name="BarsPlotValue"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>PlotValue</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-42"></a> <span class='hs-varid'>barsReference</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span>
<a name="line-43"></a> <span class='hs-varid'>barsAdd</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="instance%20BarsPlotValue%20Double"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>BarsPlotValue</span> <span class='hs-conid'>Double</span> <span class='hs-keyword'>where</span>
<a name="line-46"></a> <span class='hs-varid'>barsReference</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-47"></a> <span class='hs-varid'>barsAdd</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-layout'>)</span>
<a name="line-48"></a><a name="instance%20BarsPlotValue%20Int"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>BarsPlotValue</span> <span class='hs-conid'>Int</span> <span class='hs-keyword'>where</span>
<a name="line-49"></a> <span class='hs-varid'>barsReference</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-50"></a> <span class='hs-varid'>barsAdd</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-layout'>)</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="PlotBarsStyle"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotBarsStyle</span>
<a name="line-53"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsStacked</span> <span class='hs-comment'>-- ^ Bars for a fixed x are stacked vertically</span>
<a name="line-54"></a> <span class='hs-comment'>-- on top of each other.</span>
<a name="line-55"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BarsClustered</span> <span class='hs-comment'>-- ^ Bars for a fixed x are put horizontally</span>
<a name="line-56"></a> <span class='hs-comment'>-- beside each other.</span>
<a name="line-57"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="PlotBarsSpacing"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotBarsSpacing</span>
<a name="line-60"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsFixWidth</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ All bars have the same width in pixels.</span>
<a name="line-61"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BarsFixGap</span> <span class='hs-conid'>Double</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ (BarsFixGap g mw) means make the gaps between</span>
<a name="line-62"></a> <span class='hs-comment'>-- the bars equal to g, but with a minimum bar width</span>
<a name="line-63"></a> <span class='hs-comment'>-- of mw</span>
<a name="line-64"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="PlotBarsAlignment"></a><span class='hs-comment'>-- | How bars for a given (x,[y]) are aligned with respect to screen</span>
<a name="line-67"></a><a name="PlotBarsAlignment"></a><span class='hs-comment'>-- coordinate corresponding to x (deviceX).</span>
<a name="line-68"></a><a name="PlotBarsAlignment"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotBarsAlignment</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsLeft</span> <span class='hs-comment'>-- ^ The left edge of bars is at deviceX</span>
<a name="line-69"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BarsCentered</span> <span class='hs-comment'>-- ^ Bars are centered around deviceX</span>
<a name="line-70"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BarsRight</span> <span class='hs-comment'>-- ^ The right edge of bars is at deviceX</span>
<a name="line-71"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="PlotBars"></a><span class='hs-comment'>-- | Value describing how to plot a set of bars.</span>
<a name="line-74"></a><a name="PlotBars"></a><span class='hs-comment'>-- Note that the input data is typed [(x,[y])], ie for each x value</span>
<a name="line-75"></a><a name="PlotBars"></a><span class='hs-comment'>-- we plot several y values. Typically the size of each [y] list would</span>
<a name="line-76"></a><a name="PlotBars"></a><span class='hs-comment'>-- be the same.</span>
<a name="line-77"></a><a name="PlotBars"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotBars</span> <span class='hs-layout'>{</span>
<a name="line-78"></a> <span class='hs-comment'>-- | This value specifies whether each value from [y] should be</span>
<a name="line-79"></a> <span class='hs-comment'>-- shown beside or above the previous value.</span>
<a name="line-80"></a> <span class='hs-sel'>_plot_bars_style</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotBarsStyle</span><span class='hs-layout'>,</span>
<a name="line-81"></a>
<a name="line-82"></a> <span class='hs-comment'>-- | The style in which to draw each element of [y]. A fill style</span>
<a name="line-83"></a> <span class='hs-comment'>-- is required, and if a linestyle is given, each bar will be</span>
<a name="line-84"></a> <span class='hs-comment'>-- outlined.</span>
<a name="line-85"></a> <span class='hs-sel'>_plot_bars_item_styles</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-conid'>FillStyle</span><span class='hs-layout'>,</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>LineStyle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-86"></a>
<a name="line-87"></a> <span class='hs-comment'>-- | The title of each element of [y]. These will be shown in the legend.</span>
<a name="line-88"></a> <span class='hs-sel'>_plot_bars_titles</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-89"></a>
<a name="line-90"></a> <span class='hs-comment'>-- | This value controls how the widths of the bars are</span>
<a name="line-91"></a> <span class='hs-comment'>-- calculated. Either the widths of the bars, or the gaps between</span>
<a name="line-92"></a> <span class='hs-comment'>-- them can be fixed.</span>
<a name="line-93"></a> <span class='hs-sel'>_plot_bars_spacing</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotBarsSpacing</span><span class='hs-layout'>,</span>
<a name="line-94"></a>
<a name="line-95"></a> <span class='hs-comment'>-- | This value controls how bars for a fixed x are aligned with</span>
<a name="line-96"></a> <span class='hs-comment'>-- respect to the device coordinate corresponding to x.</span>
<a name="line-97"></a> <span class='hs-sel'>_plot_bars_alignment</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotBarsAlignment</span><span class='hs-layout'>,</span>
<a name="line-98"></a>
<a name="line-99"></a> <span class='hs-comment'>-- | The starting level for the chart (normally 0).</span>
<a name="line-100"></a> <span class='hs-sel'>_plot_bars_reference</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span>
<a name="line-101"></a>
<a name="line-102"></a> <span class='hs-sel'>_plot_bars_singleton_width</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span><span class='hs-layout'>,</span>
<a name="line-103"></a>
<a name="line-104"></a> <span class='hs-comment'>-- | The actual points to be plotted.</span>
<a name="line-105"></a> <span class='hs-sel'>_plot_bars_values</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-106"></a><span class='hs-layout'>}</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="instance%20Default%20(PlotBars%20x%20y)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Default</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-109"></a> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotBars</span>
<a name="line-110"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_plot_bars_style</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsClustered</span>
<a name="line-111"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_item_styles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cycle</span> <span class='hs-varid'>istyles</span>
<a name="line-112"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_titles</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-113"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_spacing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsFixGap</span> <span class='hs-num'>10</span> <span class='hs-num'>2</span>
<a name="line-114"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_alignment</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BarsCentered</span>
<a name="line-115"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_values</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-116"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_singleton_width</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>20</span>
<a name="line-117"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_bars_reference</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>barsReference</span>
<a name="line-118"></a> <span class='hs-layout'>}</span>
<a name="line-119"></a> <span class='hs-keyword'>where</span>
<a name="line-120"></a> <span class='hs-varid'>istyles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>mkstyle</span> <span class='hs-varid'>defaultColorSeq</span>
<a name="line-121"></a> <span class='hs-varid'>mkstyle</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>solidFillStyle</span> <span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>solidLine</span> <span class='hs-num'>1.0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>opaque</span> <span class='hs-varid'>black</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-122"></a>
<a name="line-123"></a><a name="plotBars"></a><span class='hs-definition'>plotBars</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-124"></a><span class='hs-definition'>plotBars</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Plot</span> <span class='hs-layout'>{</span>
<a name="line-125"></a> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderPlotBars</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span>
<a name="line-126"></a> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span> <span class='hs-layout'>(</span><span class='hs-sel'>_plot_bars_titles</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>renderPlotLegendBars</span>
<a name="line-128"></a> <span class='hs-layout'>(</span><span class='hs-sel'>_plot_bars_item_styles</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-129"></a> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>allBarPoints</span> <span class='hs-varid'>p</span>
<a name="line-130"></a> <span class='hs-layout'>}</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="renderPlotBars"></a><span class='hs-definition'>renderPlotBars</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointMapFn</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span>
<a name="line-133"></a><span class='hs-definition'>renderPlotBars</span> <span class='hs-varid'>p</span> <span class='hs-varid'>pmap</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_style</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-134"></a> <span class='hs-conid'>BarsClustered</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>forM_</span> <span class='hs-varid'>vals</span> <span class='hs-varid'>clusteredBars</span>
<a name="line-135"></a> <span class='hs-conid'>BarsStacked</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>forM_</span> <span class='hs-varid'>vals</span> <span class='hs-varid'>stackedBars</span>
<a name="line-136"></a> <span class='hs-keyword'>where</span>
<a name="line-137"></a> <span class='hs-varid'>clusteredBars</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-138"></a> <span class='hs-varid'>forM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip3</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>ys</span> <span class='hs-varid'>styles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>fstyle</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-139"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>fstyle</span> <span class='hs-varop'>$</span>
<a name="line-140"></a> <span class='hs-varid'>alignFillPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>barPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>offset</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>yref0</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-141"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>fillPath</span>
<a name="line-142"></a> <span class='hs-varid'>forM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip3</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>ys</span> <span class='hs-varid'>styles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>mlstyle</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-143"></a> <span class='hs-varid'>whenJust</span> <span class='hs-varid'>mlstyle</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>lstyle</span> <span class='hs-keyglyph'>-></span>
<a name="line-144"></a> <span class='hs-varid'>withLineStyle</span> <span class='hs-varid'>lstyle</span> <span class='hs-varop'>$</span>
<a name="line-145"></a> <span class='hs-varid'>alignStrokePath</span> <span class='hs-layout'>(</span><span class='hs-varid'>barPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>offset</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>yref0</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>strokePath</span>
<a name="line-147"></a>
<a name="line-148"></a> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_alignment</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-149"></a> <span class='hs-conid'>BarsLeft</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>i</span> <span class='hs-varop'>*</span> <span class='hs-varid'>width</span>
<a name="line-150"></a> <span class='hs-conid'>BarsRight</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-comment'>-</span><span class='hs-varid'>nys</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-varid'>width</span>
<a name="line-151"></a> <span class='hs-conid'>BarsCentered</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-varop'>*</span><span class='hs-varid'>i</span><span class='hs-comment'>-</span><span class='hs-varid'>nys</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-varid'>width</span><span class='hs-varop'>/</span><span class='hs-num'>2</span>
<a name="line-152"></a>
<a name="line-153"></a> <span class='hs-varid'>stackedBars</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-154"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>y2s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span> <span class='hs-layout'>(</span><span class='hs-varid'>yref0</span><span class='hs-conop'>:</span><span class='hs-varid'>stack</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>stack</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-155"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ofs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_alignment</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-156"></a> <span class='hs-conid'>BarsLeft</span> <span class='hs-keyglyph'>-></span> <span class='hs-num'>0</span>
<a name="line-157"></a> <span class='hs-conid'>BarsRight</span> <span class='hs-keyglyph'>-></span> <span class='hs-comment'>-</span><span class='hs-varid'>width</span>
<a name="line-158"></a> <span class='hs-conid'>BarsCentered</span> <span class='hs-keyglyph'>-></span> <span class='hs-comment'>-</span><span class='hs-layout'>(</span><span class='hs-varid'>width</span><span class='hs-varop'>/</span><span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-159"></a> <span class='hs-varid'>forM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip</span> <span class='hs-varid'>y2s</span> <span class='hs-varid'>styles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>y0</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>fstyle</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-160"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>fstyle</span> <span class='hs-varop'>$</span>
<a name="line-161"></a> <span class='hs-varid'>alignFillPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>barPath</span> <span class='hs-varid'>ofs</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y0</span> <span class='hs-varid'>y1</span><span class='hs-layout'>)</span>
<a name="line-162"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>fillPath</span>
<a name="line-163"></a> <span class='hs-varid'>forM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip</span> <span class='hs-varid'>y2s</span> <span class='hs-varid'>styles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>y0</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>mlstyle</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-164"></a> <span class='hs-varid'>whenJust</span> <span class='hs-varid'>mlstyle</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>lstyle</span> <span class='hs-keyglyph'>-></span>
<a name="line-165"></a> <span class='hs-varid'>withLineStyle</span> <span class='hs-varid'>lstyle</span> <span class='hs-varop'>$</span>
<a name="line-166"></a> <span class='hs-varid'>alignStrokePath</span> <span class='hs-layout'>(</span><span class='hs-varid'>barPath</span> <span class='hs-varid'>ofs</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y0</span> <span class='hs-varid'>y1</span><span class='hs-layout'>)</span>
<a name="line-167"></a> <span class='hs-varop'>>>=</span> <span class='hs-varid'>strokePath</span>
<a name="line-168"></a>
<a name="line-169"></a> <span class='hs-varid'>barPath</span> <span class='hs-varid'>xos</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y0</span> <span class='hs-varid'>y1</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-170"></a> <span class='hs-keyword'>let</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> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pmap'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span>
<a name="line-171"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>y0'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pmap'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y0</span><span class='hs-layout'>)</span>
<a name="line-172"></a> <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-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-varop'>+</span><span class='hs-varid'>xos</span><span class='hs-layout'>)</span> <span class='hs-varid'>y0'</span><span class='hs-layout'>)</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-varop'>+</span><span class='hs-varid'>xos</span><span class='hs-varop'>+</span><span class='hs-varid'>width</span><span class='hs-layout'>)</span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-173"></a>
<a name="line-174"></a> <span class='hs-varid'>yref0</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_bars_reference</span> <span class='hs-varid'>p</span>
<a name="line-175"></a> <span class='hs-varid'>vals</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_bars_values</span> <span class='hs-varid'>p</span>
<a name="line-176"></a> <span class='hs-varid'>width</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_spacing</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-177"></a> <span class='hs-conid'>BarsFixGap</span> <span class='hs-varid'>gap</span> <span class='hs-varid'>minw</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-layout'>(</span><span class='hs-varid'>minXInterval</span> <span class='hs-comment'>-</span> <span class='hs-varid'>gap</span><span class='hs-layout'>)</span> <span class='hs-varid'>minw</span> <span class='hs-keyword'>in</span>
<a name="line-178"></a> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_style</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-179"></a> <span class='hs-conid'>BarsClustered</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varop'>/</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nys</span>
<a name="line-180"></a> <span class='hs-conid'>BarsStacked</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span>
<a name="line-181"></a> <span class='hs-conid'>BarsFixWidth</span> <span class='hs-varid'>width'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>width'</span>
<a name="line-182"></a> <span class='hs-varid'>styles</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_bars_item_styles</span> <span class='hs-varid'>p</span>
<a name="line-183"></a>
<a name="line-184"></a> <span class='hs-varid'>minXInterval</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>diffs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>tail</span> <span class='hs-varid'>mxs</span><span class='hs-layout'>)</span> <span class='hs-varid'>mxs</span>
<a name="line-185"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varid'>diffs</span>
<a name="line-186"></a> <span class='hs-keyword'>then</span> <span class='hs-sel'>_plot_bars_singleton_width</span> <span class='hs-varid'>p</span>
<a name="line-187"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>minimum</span> <span class='hs-varid'>diffs</span>
<a name="line-188"></a> <span class='hs-keyword'>where</span>
<a name="line-189"></a> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>allBarPoints</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-190"></a> <span class='hs-varid'>mxs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nub</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sort</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>mapX</span> <span class='hs-varid'>xs</span>
<a name="line-191"></a>
<a name="line-192"></a> <span class='hs-varid'>nys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>vals</span> <span class='hs-keyglyph'>]</span>
<a name="line-193"></a>
<a name="line-194"></a> <span class='hs-varid'>pmap'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapXY</span> <span class='hs-varid'>pmap</span>
<a name="line-195"></a> <span class='hs-varid'>mapX</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p_x</span> <span class='hs-layout'>(</span><span class='hs-varid'>pmap'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>barsReference</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="whenJust"></a><span class='hs-definition'>whenJust</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</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'>m</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-198"></a><span class='hs-definition'>whenJust</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-199"></a><span class='hs-definition'>whenJust</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-200"></a>
<a name="line-201"></a><a name="allBarPoints"></a><span class='hs-definition'>allBarPoints</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-202"></a><span class='hs-definition'>allBarPoints</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_plot_bars_style</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-203"></a> <span class='hs-conid'>BarsClustered</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-varid'>y0</span><span class='hs-conop'>:</span><span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>ys</span><span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>)</span>
<a name="line-204"></a> <span class='hs-conid'>BarsStacked</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-varid'>y0</span><span class='hs-conop'>:</span><span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>stack</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pts</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>)</span>
<a name="line-205"></a> <span class='hs-keyword'>where</span>
<a name="line-206"></a> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_bars_values</span> <span class='hs-varid'>p</span>
<a name="line-207"></a> <span class='hs-varid'>y0</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_bars_reference</span> <span class='hs-varid'>p</span>
<a name="line-208"></a>
<a name="line-209"></a><a name="stack"></a><span class='hs-definition'>stack</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span>
<a name="line-210"></a><span class='hs-definition'>stack</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>scanl1</span> <span class='hs-varid'>barsAdd</span>
<a name="line-211"></a>
<a name="line-212"></a><a name="renderPlotLegendBars"></a><span class='hs-definition'>renderPlotLegendBars</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>FillStyle</span><span class='hs-layout'>,</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>LineStyle</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span>
<a name="line-213"></a><span class='hs-definition'>renderPlotLegendBars</span> <span class='hs-layout'>(</span><span class='hs-varid'>fstyle</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span>
<a name="line-214"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>fstyle</span> <span class='hs-varop'>$</span>
<a name="line-215"></a> <span class='hs-varid'>fillPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>rectPath</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-216"></a>
<a name="line-217"></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'>PlotBars</span> <span class='hs-layout'>)</span>
</pre></body>
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