107 lines
4.4 KiB
C#
107 lines
4.4 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 data label renderer.
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/// </summary>
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internal abstract class DataLabelRenderer : Renderer
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{
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/// <summary>
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/// Initializes a new instance of the DataLabelRenderer class with the
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/// specified renderer parameters.
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/// </summary>
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internal DataLabelRenderer(RendererParameters parms)
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: base(parms)
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{ }
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/// <summary>
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/// Creates a data label rendererInfo.
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/// Does not return any renderer info.
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/// </summary>
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internal override RendererInfo Init()
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{
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ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo;
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foreach (SeriesRendererInfo sri in cri.seriesRendererInfos)
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{
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if (cri._chart._hasDataLabel || cri._chart._dataLabel != null ||
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sri._series._hasDataLabel || sri._series._dataLabel != null)
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{
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DataLabelRendererInfo dlri = new DataLabelRendererInfo();
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DataLabel dl = sri._series._dataLabel;
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if (dl == null)
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dl = cri._chart._dataLabel;
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if (dl == null)
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{
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dlri.Format = "0";
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dlri.Font = cri.DefaultDataLabelFont;
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dlri.FontColor = new XSolidBrush(XColors.Black);
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dlri.Position = DataLabelPosition.InsideEnd;
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if (cri._chart._type == ChartType.Pie2D || cri._chart._type == ChartType.PieExploded2D)
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dlri.Type = DataLabelType.Percent;
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else
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dlri.Type = DataLabelType.Value;
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}
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else
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{
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dlri.Format = dl.Format.Length > 0 ? dl.Format : "0";
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dlri.Font = Converter.ToXFont(dl._font, cri.DefaultDataLabelFont);
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dlri.FontColor = Converter.ToXBrush(dl._font, XColors.Black);
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if (dl._positionInitialized)
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dlri.Position = dl._position;
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else
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dlri.Position = DataLabelPosition.OutsideEnd;
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if (dl._typeInitialized)
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dlri.Type = dl._type;
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else
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{
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if (cri._chart._type == ChartType.Pie2D || cri._chart._type == ChartType.PieExploded2D)
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dlri.Type = DataLabelType.Percent;
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else
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dlri.Type = DataLabelType.Value;
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}
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}
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sri._dataLabelRendererInfo = dlri;
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}
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}
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return null;
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}
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/// <summary>
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/// Calculates the specific positions for each data label.
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/// </summary>
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internal abstract void CalcPositions();
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}
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} |