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<title>Graphics/Rendering/Chart/Plot/Annotation.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.Annotation</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'>-- Show textual annotations on a chart.</span>
<a name="line-8"></a>
<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'>Annotation</span><span class='hs-layout'>(</span>
<a name="line-12"></a> <span class='hs-conid'>PlotAnnotation</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>
<a name="line-14"></a> <span class='hs-varid'>plot_annotation_hanchor</span><span class='hs-layout'>,</span>
<a name="line-15"></a> <span class='hs-varid'>plot_annotation_vanchor</span><span class='hs-layout'>,</span>
<a name="line-16"></a> <span class='hs-varid'>plot_annotation_angle</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-varid'>plot_annotation_style</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-varid'>plot_annotation_values</span>
<a name="line-19"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-20"></a>
<a name="line-21"></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-22"></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-23"></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-24"></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-25"></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-26"></a>
<a name="line-27"></a><span class='hs-comment'>-- | Value for describing a series of text annotations</span>
<a name="line-28"></a><span class='hs-comment'>-- to be placed at arbitrary points on the graph. Annotations</span>
<a name="line-29"></a><span class='hs-comment'>-- can be rotated and styled.</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="PlotAnnotation"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PlotAnnotation</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotAnnotation</span> <span class='hs-layout'>{</span>
<a name="line-32"></a> <span class='hs-sel'>_plot_annotation_hanchor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span><span class='hs-layout'>,</span>
<a name="line-33"></a> <span class='hs-sel'>_plot_annotation_vanchor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>VTextAnchor</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-sel'>_plot_annotation_angle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-comment'>-- ^ Angle, in degrees, to rotate the annotation about the anchor point.</span>
<a name="line-36"></a> <span class='hs-sel'>_plot_annotation_style</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FontStyle</span><span class='hs-layout'>,</span>
<a name="line-37"></a> <span class='hs-sel'>_plot_annotation_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-varid'>y</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-38"></a><span class='hs-layout'>}</span>
<a name="line-39"></a>
<a name="line-40"></a>
<a name="line-41"></a><a name="instance%20ToPlot%20PlotAnnotation"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToPlot</span> <span class='hs-conid'>PlotAnnotation</span> <span class='hs-keyword'>where</span>
<a name="line-42"></a> <span class='hs-varid'>toPlot</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-43"></a> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderAnnotation</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varop'>^.</span><span class='hs-sel'>_1</span><span class='hs-layout'>)</span> <span class='hs-varid'>vs</span> <span class='hs-layout'>,</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varop'>^.</span><span class='hs-sel'>_2</span><span class='hs-layout'>)</span> <span class='hs-varid'>vs</span><span class='hs-layout'>)</span>
<a name="line-46"></a> <span class='hs-layout'>}</span>
<a name="line-47"></a> <span class='hs-keyword'>where</span>
<a name="line-48"></a> <span class='hs-varid'>vs</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_values</span> <span class='hs-varid'>p</span>
<a name="line-49"></a>
<a name="line-50"></a>
<a name="line-51"></a><a name="renderAnnotation"></a><span class='hs-definition'>renderAnnotation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PlotAnnotation</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-52"></a><span class='hs-definition'>renderAnnotation</span> <span class='hs-varid'>p</span> <span class='hs-varid'>pMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withFontStyle</span> <span class='hs-varid'>style</span> <span class='hs-varop'>$</span>
<a name="line-53"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>drawOne</span> <span class='hs-varid'>values</span>
<a name="line-54"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>hta</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_hanchor</span> <span class='hs-varid'>p</span>
<a name="line-55"></a> <span class='hs-varid'>vta</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_vanchor</span> <span class='hs-varid'>p</span>
<a name="line-56"></a> <span class='hs-varid'>values</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_values</span> <span class='hs-varid'>p</span>
<a name="line-57"></a> <span class='hs-varid'>angle</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_angle</span> <span class='hs-varid'>p</span>
<a name="line-58"></a> <span class='hs-varid'>style</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_plot_annotation_style</span> <span class='hs-varid'>p</span>
<a name="line-59"></a> <span class='hs-varid'>drawOne</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>,</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drawTextsR</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>angle</span> <span class='hs-varid'>point</span> <span class='hs-varid'>s</span>
<a name="line-60"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>point</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>LValue</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-conid'>LValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="instance%20Default%20(PlotAnnotation%20x%20y)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Default</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotAnnotation</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-63"></a> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PlotAnnotation</span>
<a name="line-64"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_plot_annotation_hanchor</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HTA_Centre</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_annotation_vanchor</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>VTA_Centre</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_annotation_angle</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_annotation_style</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>def</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_annotation_values</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-69"></a> <span class='hs-layout'>}</span>
<a name="line-70"></a>
<a name="line-71"></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'>PlotAnnotation</span> <span class='hs-layout'>)</span>
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