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艾竹
2023-04-16 20:11:40 +08:00
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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 System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using LiveCharts.Definitions.Points;
using LiveCharts.Definitions.Series;
using LiveCharts.SeriesAlgorithms;
using LiveCharts.Wpf.Charts.Base;
using LiveCharts.Wpf.Points;
namespace LiveCharts.Wpf
{
/// <summary>
/// The OHCL series defines a financial series, add this series to a cartesian chart
/// </summary>
public class OhlcSeries : Series, IFinancialSeriesView
{
#region Constructors
/// <summary>
/// Initializes a new instance of OhclSeries class
/// </summary>
public OhlcSeries()
{
Model = new OhlcAlgorithm(this);
InitializeDefuaults();
}
/// <summary>
/// Initializes a new instance of OhclSeries class with a given mapper
/// </summary>
/// <param name="configuration"></param>
public OhlcSeries(object configuration)
{
Model = new OhlcAlgorithm(this);
Configuration = configuration;
InitializeDefuaults();
}
#endregion
#region Private Properties
#endregion
#region Properties
/// <summary>
/// The maximum column width property
/// </summary>
public static readonly DependencyProperty MaxColumnWidthProperty = DependencyProperty.Register(
"MaxColumnWidth", typeof (double), typeof (OhlcSeries), new PropertyMetadata(default(double)));
/// <summary>
/// Gets or sets the maximum with of a point, a point will be capped to this width.
/// </summary>
public double MaxColumnWidth
{
get { return (double) GetValue(MaxColumnWidthProperty); }
set { SetValue(MaxColumnWidthProperty, value); }
}
/// <summary>
/// The increase brush property
/// </summary>
public static readonly DependencyProperty IncreaseBrushProperty = DependencyProperty.Register(
"IncreaseBrush", typeof (Brush), typeof (OhlcSeries), new PropertyMetadata(default(Brush)));
/// <summary>
/// Gets or sets the brush of the point when close value is grater than open value
/// </summary>
public Brush IncreaseBrush
{
get { return (Brush) GetValue(IncreaseBrushProperty); }
set { SetValue(IncreaseBrushProperty, value); }
}
/// <summary>
/// The decrease brush property
/// </summary>
public static readonly DependencyProperty DecreaseBrushProperty = DependencyProperty.Register(
"DecreaseBrush", typeof (Brush), typeof (OhlcSeries), new PropertyMetadata(default(Brush)));
/// <summary>
/// Gets or sets the brush of the point when close value is less than open value
/// </summary>
public Brush DecreaseBrush
{
get { return (Brush) GetValue(DecreaseBrushProperty); }
set { SetValue(DecreaseBrushProperty, value); }
}
#endregion
#region Overridden Methods
/// <summary>
/// This method runs when the update starts
/// </summary>
public override void OnSeriesUpdateStart()
{
//do nothing on updateStart
}
/// <summary>
/// Gets the point view.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="label">The label.</param>
/// <returns></returns>
public override IChartPointView GetPointView(ChartPoint point, string label)
{
var pbv = (OhlcPointView)point.View;
if (pbv == null)
{
pbv = new OhlcPointView
{
IsNew = true,
HighToLowLine = new Line(),
OpenLine = new Line(),
CloseLine = new Line()
};
Model.Chart.View.AddToDrawMargin(pbv.HighToLowLine);
Model.Chart.View.AddToDrawMargin(pbv.OpenLine);
Model.Chart.View.AddToDrawMargin(pbv.CloseLine);
}
else
{
pbv.IsNew = false;
point.SeriesView.Model.Chart.View
.EnsureElementBelongsToCurrentDrawMargin(pbv.HighToLowLine);
point.SeriesView.Model.Chart.View
.EnsureElementBelongsToCurrentDrawMargin(pbv.OpenLine);
point.SeriesView.Model.Chart.View
.EnsureElementBelongsToCurrentDrawMargin(pbv.CloseLine);
point.SeriesView.Model.Chart.View
.EnsureElementBelongsToCurrentDrawMargin(pbv.HoverShape);
point.SeriesView.Model.Chart.View
.EnsureElementBelongsToCurrentDrawMargin(pbv.DataLabel);
}
pbv.HighToLowLine.StrokeThickness = StrokeThickness;
pbv.CloseLine.StrokeThickness = StrokeThickness;
pbv.OpenLine.StrokeThickness = StrokeThickness;
pbv.HighToLowLine.StrokeDashArray = StrokeDashArray;
pbv.CloseLine.StrokeDashArray = StrokeDashArray;
pbv.OpenLine.StrokeDashArray = StrokeDashArray;
pbv.HighToLowLine.Visibility = Visibility;
pbv.CloseLine.Visibility = Visibility;
pbv.OpenLine.Visibility = Visibility;
var i = Panel.GetZIndex(this);
Panel.SetZIndex(pbv.HighToLowLine, i);
Panel.SetZIndex(pbv.CloseLine, i);
Panel.SetZIndex(pbv.OpenLine, i);
if (Model.Chart.RequiresHoverShape && pbv.HoverShape == null)
{
pbv.HoverShape = new Rectangle
{
Fill = Brushes.Transparent,
StrokeThickness = 0
};
Panel.SetZIndex(pbv.HoverShape, int.MaxValue);
var wpfChart = (Chart)Model.Chart.View;
wpfChart.AttachHoverableEventTo(pbv.HoverShape);
Model.Chart.View.AddToDrawMargin(pbv.HoverShape);
}
if (pbv.HoverShape != null) pbv.HoverShape.Visibility = Visibility;
if (DataLabels)
{
pbv.DataLabel = UpdateLabelContent(new DataLabelViewModel
{
FormattedText = label,
Instance = point.Instance
}, pbv.DataLabel);
}
if (point.Open < point.Close)
{
pbv.HighToLowLine.Stroke = IncreaseBrush;
pbv.CloseLine.Stroke = IncreaseBrush;
pbv.OpenLine.Stroke = IncreaseBrush;
}
else
{
pbv.HighToLowLine.Stroke = DecreaseBrush;
pbv.CloseLine.Stroke = DecreaseBrush;
pbv.OpenLine.Stroke = DecreaseBrush;
}
return pbv;
}
#endregion
#region Private Methods
private void InitializeDefuaults()
{
SetCurrentValue(StrokeThicknessProperty, 2.5d);
SetCurrentValue(MaxColumnWidthProperty, 35d);
SetCurrentValue(MaxWidthProperty, 25d);
SetCurrentValue(IncreaseBrushProperty, new SolidColorBrush(Color.FromRgb(76, 174, 80)));
SetCurrentValue(DecreaseBrushProperty, new SolidColorBrush(Color.FromRgb(238, 83, 80)));
Func<ChartPoint, string> defaultLabel = x =>
string.Format("O: {0}, H: {1}, L: {2} C: {3}", x.Open, x.High, x.Low, x.Close);
SetCurrentValue(LabelPointProperty, defaultLabel);
DefaultFillOpacity = 1;
}
#endregion
}
}