100 lines
3.8 KiB
C#
100 lines
3.8 KiB
C#
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#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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/// Renders the plot area used by line charts.
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/// </summary>
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internal class LinePlotAreaRenderer : ColumnLikePlotAreaRenderer
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{
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/// <summary>
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/// Initializes a new instance of the LinePlotAreaRenderer class with the
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/// specified renderer parameters.
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/// </summary>
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internal LinePlotAreaRenderer(RendererParameters parms)
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: base(parms)
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{ }
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/// <summary>
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/// Draws the content of the line plot area.
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/// </summary>
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internal override void Draw()
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{
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ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo;
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XRect plotAreaRect = cri.plotAreaRendererInfo.Rect;
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if (plotAreaRect.IsEmpty)
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return;
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XGraphics gfx = _rendererParms.Graphics;
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XGraphicsState state = gfx.Save();
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//gfx.SetClip(plotAreaRect, XCombineMode.Intersect);
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gfx.IntersectClip(plotAreaRect);
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//TODO Treat null values correctly.
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// Points can be missing. Treat null values accordingly (NotPlotted, Interpolate etc.)
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// Draw lines and markers for each data series.
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XMatrix matrix = cri.plotAreaRendererInfo._matrix;
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double xMajorTick = cri.xAxisRendererInfo.MajorTick;
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foreach (SeriesRendererInfo sri in cri.seriesRendererInfos)
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{
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int count = sri._series.Elements.Count;
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XPoint[] points = new XPoint[count];
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for (int idx = 0; idx < count; idx++)
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{
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double v = sri._series.Elements[idx].Value;
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if (double.IsNaN(v))
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v = 0;
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points[idx] = new XPoint(idx + xMajorTick / 2, v);
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}
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matrix.TransformPoints(points);
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gfx.DrawLines(sri.LineFormat, points);
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DrawMarker(gfx, points, sri);
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}
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//gfx.ResetClip();
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gfx.Restore(state);
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}
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/// <summary>
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/// Draws all markers given in rendererInfo at the positions specified by points.
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/// </summary>
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void DrawMarker(XGraphics graphics, XPoint[] points, SeriesRendererInfo rendererInfo)
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{
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foreach (XPoint pos in points)
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MarkerRenderer.Draw(graphics, pos, rendererInfo._markerRendererInfo);
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}
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}
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}
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