添加项目文件。

Live-Charts-master/Core/SeriesAlgorithms/StackedColumnAlgorithm.cs

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+//The MIT License(MIT)
+
+//Copyright(c) 2016 Alberto Rodriguez & LiveCharts Contributors
+
+//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.
+
+using System;
+using LiveCharts.Defaults;
+using LiveCharts.Definitions.Points;
+using LiveCharts.Definitions.Series;
+using LiveCharts.Dtos;
+
+namespace LiveCharts.SeriesAlgorithms
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <seealso cref="LiveCharts.SeriesAlgorithm" />
+    /// <seealso cref="LiveCharts.Definitions.Series.ICartesianSeries" />
+    public class StackedColumnAlgorithm : SeriesAlgorithm , ICartesianSeries
+    {
+        private readonly IStackModelableSeriesView _stackModelable;
+        /// <summary>
+        /// Initializes a new instance of the <see cref="StackedColumnAlgorithm"/> class.
+        /// </summary>
+        /// <param name="view">The view.</param>
+        public StackedColumnAlgorithm(ISeriesView view) : base(view)
+        {
+            SeriesOrientation = SeriesOrientation.Horizontal;
+            _stackModelable = (IStackModelableSeriesView) view;
+            PreferredSelectionMode = TooltipSelectionMode.SharedXValues;
+        }
+
+        /// <summary>
+        /// Updates this instance.
+        /// </summary>
+        public override void Update()
+        {
+            var castedSeries = (IStackedColumnSeriesView) View;
+
+            var padding = castedSeries.ColumnPadding;
+
+            var totalSpace = ChartFunctions.GetUnitWidth(AxisOrientation.X, Chart, View.ScalesXAt) - padding;
+            var singleColWidth = totalSpace;
+
+            double exceed = 0;
+
+            if (singleColWidth > castedSeries.MaxColumnWidth)
+            {
+                exceed = (singleColWidth - castedSeries.MaxColumnWidth)/2;
+                singleColWidth = castedSeries.MaxColumnWidth;
+            }
+
+            var relativeLeft = padding + exceed;
+
+            var startAt = CurrentYAxis.FirstSeparator >= 0 && CurrentYAxis.LastSeparator > 0
+                ? CurrentYAxis.FirstSeparator
+                : (CurrentYAxis.FirstSeparator < 0 && CurrentYAxis.LastSeparator <= 0          
+                ? CurrentYAxis.LastSeparator
+                    : 0);                                                         
+
+            var zero = ChartFunctions.ToDrawMargin(startAt, AxisOrientation.Y, Chart, View.ScalesYAt);
+
+            foreach (var chartPoint in View.ActualValues.GetPoints(View))
+            {
+                var x = ChartFunctions.ToDrawMargin(chartPoint.X, AxisOrientation.X, Chart, View.ScalesXAt);
+                var from = _stackModelable.StackMode == StackMode.Values
+                    ? ChartFunctions.ToDrawMargin(chartPoint.From, AxisOrientation.Y, Chart, View.ScalesYAt)
+                    : ChartFunctions.ToDrawMargin(chartPoint.From/chartPoint.Sum, AxisOrientation.Y, Chart, View.ScalesYAt);
+                var to = _stackModelable.StackMode == StackMode.Values
+                    ? ChartFunctions.ToDrawMargin(chartPoint.To, AxisOrientation.Y, Chart, View.ScalesYAt)
+                    : ChartFunctions.ToDrawMargin(chartPoint.To/chartPoint.Sum, AxisOrientation.Y, Chart, View.ScalesYAt);
+
+                if (double.IsNaN(from)) from = 0;
+                if (double.IsNaN(to)) to = 0;
+
+                chartPoint.View = View.GetPointView(chartPoint,
+                    View.DataLabels
+                        ? (chartPoint.Participation > 0.05
+                            ? View.GetLabelPointFormatter()(chartPoint)
+                            : string.Empty)
+                        : null);
+
+                chartPoint.SeriesView = View;
+
+                var rectangleView = (IRectanglePointView) chartPoint.View;
+
+                var h = Math.Abs(to - zero) - Math.Abs(from - zero);
+                var t = to < zero
+                    ? to
+                    : from;
+
+                rectangleView.Data.Height = h;
+                rectangleView.Data.Top = t;
+
+                rectangleView.Data.Left = x + relativeLeft;
+                rectangleView.Data.Width = singleColWidth - padding;
+
+                rectangleView.ZeroReference = zero;
+
+                chartPoint.ChartLocation = new CorePoint(rectangleView.Data.Left + singleColWidth/2 - padding/2,
+                    t);
+
+                chartPoint.View.DrawOrMove(null, chartPoint, 0, Chart);
+            }
+        }
+
+        double ICartesianSeries.GetMinX(AxisCore axis)
+        {
+            return AxisLimits.StretchMin(axis);
+        }
+
+        double ICartesianSeries.GetMaxX(AxisCore axis)
+        {
+            return AxisLimits.UnitRight(axis);
+        }
+
+        double ICartesianSeries.GetMinY(AxisCore axis)
+        {
+            return double.MaxValue;
+        }
+
+        double ICartesianSeries.GetMaxY(AxisCore axis)
+        {
+            return double.MinValue;
+        }
+    }
+}