128 lines
5.0 KiB
C#
128 lines
5.0 KiB
C#
#region PDFsharp Charting - A .NET charting library based on PDFsharp
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//
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// Authors:
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// Niklas Schneider
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using PdfSharp.Drawing;
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namespace PdfSharp.Charting.Renderers
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{
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/// <summary>
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/// Represents a plot area renderer of clustered bars, i. e. all bars are drawn side by side.
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/// </summary>
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internal class BarClusteredPlotAreaRenderer : BarPlotAreaRenderer
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{
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/// <summary>
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/// Initializes a new instance of the BarClusteredPlotAreaRenderer class with the
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/// specified renderer parameters.
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/// </summary>
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internal BarClusteredPlotAreaRenderer(RendererParameters parms)
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: base(parms)
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{ }
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/// <summary>
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/// Calculates the position, width and height of each bar of all series.
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/// </summary>
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protected override void CalcBars()
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{
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ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo;
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if (cri.seriesRendererInfos.Length == 0)
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return;
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double xMax = cri.xAxisRendererInfo.MaximumScale;
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double yMin = cri.yAxisRendererInfo.MinimumScale;
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double yMax = cri.yAxisRendererInfo.MaximumScale;
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int pointCount = 0;
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foreach (SeriesRendererInfo sri in cri.seriesRendererInfos)
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pointCount += sri._series._seriesElements.Count;
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// Space shared by one clustered bar.
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double groupWidth = cri.xAxisRendererInfo.MajorTick;
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// Space used by one bar.
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double columnWidth = groupWidth * 0.75 / cri.seriesRendererInfos.Length;
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int seriesIdx = 0;
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XPoint[] points = new XPoint[2];
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foreach (SeriesRendererInfo sri in cri.seriesRendererInfos)
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{
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// Set x to first clustered bar for each series.
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double x = xMax - groupWidth / 2;
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// Offset for bars of a particular series from the start of a clustered bar.
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double dx = (columnWidth * seriesIdx) - (columnWidth / 2 * cri.seriesRendererInfos.Length);
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double y0 = yMin;
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foreach (ColumnRendererInfo column in sri._pointRendererInfos)
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{
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if (column.Point != null)
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{
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double x0 = x - dx;
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double x1 = x - dx - columnWidth;
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double y1 = column.Point.Value;
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// Draw from zero base line, if it exists.
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if (y0 < 0 && yMax >= 0)
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y0 = 0;
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// y0 should always be lower than y1, i. e. draw bar from bottom to top.
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if (y1 < 0 && y1 < y0)
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{
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double y = y0;
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y0 = y1;
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y1 = y;
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}
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points[0].X = y0; // upper left
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points[0].Y = x0;
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points[1].X = y1; // lower right
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points[1].Y = x1;
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cri.plotAreaRendererInfo._matrix.TransformPoints(points);
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column.Rect = new XRect(points[0].X,
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points[1].Y,
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points[1].X - points[0].X,
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points[0].Y - points[1].Y);
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}
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x--; // Next clustered bar.
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}
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seriesIdx++;
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}
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}
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/// <summary>
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/// If yValue is within the range from yMin to yMax returns true, otherwise false.
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/// </summary>
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protected override bool IsDataInside(double yMin, double yMax, double yValue)
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{
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return yValue <= yMax && yValue >= yMin;
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}
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}
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}
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