104 lines
3.8 KiB
C#
104 lines
3.8 KiB
C#
#region PDFsharp Charting - A .NET charting library based on PDFsharp
|
|
//
|
|
// Authors:
|
|
// Niklas Schneider
|
|
//
|
|
// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
|
|
//
|
|
// http://www.pdfsharp.com
|
|
// http://sourceforge.net/projects/pdfsharp
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the "Software"),
|
|
// to deal in the Software without restriction, including without limitation
|
|
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
// and/or sell copies of the Software, and to permit persons to whom the
|
|
// Software is furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
#endregion
|
|
|
|
using System;
|
|
using PdfSharp.Drawing;
|
|
|
|
namespace PdfSharp.Charting.Renderers
|
|
{
|
|
/// <summary>
|
|
/// Represents a closed pie plot area renderer.
|
|
/// </summary>
|
|
internal class PieClosedPlotAreaRenderer : PiePlotAreaRenderer
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the PiePlotAreaRenderer class
|
|
/// with the specified renderer parameters.
|
|
/// </summary>
|
|
internal PieClosedPlotAreaRenderer(RendererParameters parms)
|
|
: base(parms)
|
|
{ }
|
|
|
|
/// <summary>
|
|
/// Calculate angles for each sector.
|
|
/// </summary>
|
|
protected override void CalcSectors()
|
|
{
|
|
ChartRendererInfo cri = (ChartRendererInfo)_rendererParms.RendererInfo;
|
|
if (cri.seriesRendererInfos.Length == 0)
|
|
return;
|
|
|
|
SeriesRendererInfo sri = cri.seriesRendererInfos[0];
|
|
|
|
double sumValues = sri.SumOfPoints;
|
|
if (sumValues == 0)
|
|
return;
|
|
|
|
double textMeasure = 0;
|
|
if (sri._dataLabelRendererInfo != null && sri._dataLabelRendererInfo.Position == DataLabelPosition.OutsideEnd)
|
|
{
|
|
foreach (DataLabelEntryRendererInfo dleri in sri._dataLabelRendererInfo.Entries)
|
|
{
|
|
textMeasure = Math.Max(textMeasure, dleri.Width);
|
|
textMeasure = Math.Max(textMeasure, dleri.Height);
|
|
}
|
|
}
|
|
|
|
XRect pieRect = cri.plotAreaRendererInfo.Rect;
|
|
if (textMeasure != 0)
|
|
{
|
|
pieRect.X += textMeasure;
|
|
pieRect.Y += textMeasure;
|
|
pieRect.Width -= 2 * textMeasure;
|
|
pieRect.Height -= 2 * textMeasure;
|
|
}
|
|
|
|
double startAngle = 270, sweepAngle = 0;
|
|
foreach (SectorRendererInfo sector in sri._pointRendererInfos)
|
|
{
|
|
if (!double.IsNaN(sector.Point._value) && sector.Point._value != 0)
|
|
{
|
|
sweepAngle = 360 / (sumValues / Math.Abs(sector.Point._value));
|
|
|
|
sector.Rect = pieRect;
|
|
sector.StartAngle = startAngle;
|
|
sector.SweepAngle = sweepAngle;
|
|
|
|
startAngle += sweepAngle;
|
|
}
|
|
else
|
|
{
|
|
sector.StartAngle = double.NaN;
|
|
sector.SweepAngle = double.NaN;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|