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https://gitee.com/akwkevin/aistudio.-wpf.-diagram
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484 lines
17 KiB
C#
484 lines
17 KiB
C#
//The MIT License(MIT)
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//Copyright(c) 2016 Alberto Rodriguez & LiveCharts Contributors
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//Permission is hereby granted, free of charge, to any person obtaining a copy
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//of this software and associated documentation files (the "Software"), to deal
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//in the Software without restriction, including without limitation the rights
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//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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//copies of the Software, and to permit persons to whom the Software is
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//furnished to do so, subject to the following conditions:
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//The above copyright notice and this permission notice shall be included in all
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//copies or substantial portions of the Software.
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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 THE
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//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 FROM,
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//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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//SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Windows.Foundation;
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using Windows.UI.Xaml;
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using Windows.UI.Xaml.Controls;
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using Windows.UI.Xaml.Media;
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using Windows.UI.Xaml.Shapes;
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using LiveCharts.Definitions.Points;
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using LiveCharts.Definitions.Series;
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using LiveCharts.Dtos;
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using LiveCharts.Helpers;
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using LiveCharts.SeriesAlgorithms;
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using LiveCharts.Uwp.Charts.Base;
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using LiveCharts.Uwp.Components;
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using LiveCharts.Uwp.Points;
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namespace LiveCharts.Uwp
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{
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/// <summary>
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/// The line series displays trends between points, you must add this series to a cartesian chart.
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/// </summary>
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public class LineSeries : Series, ILineSeriesView, IFondeable, IAreaPoint
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{
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#region Constructors
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/// <summary>
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/// Initializes a new instance of LineSeries class
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/// </summary>
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public LineSeries()
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{
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Model = new LineAlgorithm(this);
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InitializeDefuaults();
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}
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/// <summary>
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/// Initializes a new instance of LineSeries class with a given mapper
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/// </summary>
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/// <param name="configuration"></param>
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public LineSeries(object configuration)
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{
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Model = new LineAlgorithm(this);
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Configuration = configuration;
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InitializeDefuaults();
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}
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#endregion
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#region Private Properties
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/// <summary>
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/// Gets or sets the figure.
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/// </summary>
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/// <value>
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/// The figure.
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/// </value>
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protected PathFigure Figure { get; set; }
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internal Path Path { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether this instance is path initialized.
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/// </summary>
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/// <value>
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/// <c>true</c> if this instance is path initialized; otherwise, <c>false</c>.
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/// </value>
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protected bool IsPathInitialized { get; set; }
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internal List<LineSegmentSplitter> Splitters { get; set; }
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/// <summary>
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/// Gets or sets the active splitters.
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/// </summary>
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/// <value>
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/// The active splitters.
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/// </value>
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protected int ActiveSplitters { get; set; }
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/// <summary>
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/// Gets or sets the splitters collector.
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/// </summary>
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/// <value>
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/// The splitters collector.
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/// </value>
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protected int SplittersCollector { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether this instance is new.
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/// </summary>
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/// <value>
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/// <c>true</c> if this instance is new; otherwise, <c>false</c>.
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/// </value>
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protected bool IsNew { get; set; }
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#endregion
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#region Properties
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/// <summary>
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/// The point geometry size property
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/// </summary>
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public static readonly DependencyProperty PointGeometrySizeProperty = DependencyProperty.Register(
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"PointGeometrySize", typeof (double), typeof (LineSeries),
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new PropertyMetadata(8d, CallChartUpdater()));
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/// <summary>
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/// Gets or sets the point geometry size, increasing this property will make the series points bigger
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/// </summary>
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public double PointGeometrySize
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{
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get { return (double) GetValue(PointGeometrySizeProperty); }
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set { SetValue(PointGeometrySizeProperty, value); }
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}
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/// <summary>
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/// The point foreground property
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/// </summary>
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public static readonly DependencyProperty PointForeroundProperty = DependencyProperty.Register(
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"PointForeround", typeof (Brush), typeof (LineSeries),
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new PropertyMetadata(new SolidColorBrush(Windows.UI.Colors.White)));
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/// <summary>
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/// Gets or sets the point shape foreground.
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/// </summary>
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public Brush PointForeround
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{
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get { return (Brush) GetValue(PointForeroundProperty); }
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set { SetValue(PointForeroundProperty, value); }
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}
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/// <summary>
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/// The line smoothness property
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/// </summary>
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public static readonly DependencyProperty LineSmoothnessProperty = DependencyProperty.Register(
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"LineSmoothness", typeof (double), typeof (LineSeries),
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new PropertyMetadata(.7d, CallChartUpdater()));
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/// <summary>
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/// Gets or sets line smoothness, this property goes from 0 to 1, use 0 to draw straight lines, 1 really curved lines.
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/// </summary>
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public double LineSmoothness
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{
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get { return (double) GetValue(LineSmoothnessProperty); }
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set { SetValue(LineSmoothnessProperty, value); }
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}
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/// <summary>
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/// The area limit property
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/// </summary>
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public static readonly DependencyProperty AreaLimitProperty = DependencyProperty.Register(
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"AreaLimit", typeof(double), typeof(LineSeries), new PropertyMetadata(double.NaN));
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/// <summary>
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/// Gets or sets the limit where the fill area changes orientation
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/// </summary>
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public double AreaLimit
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{
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get { return (double)GetValue(AreaLimitProperty); }
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set { SetValue(AreaLimitProperty, value); }
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}
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#endregion
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#region Overridden Methods
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/// <summary>
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/// This method runs when the update starts
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/// </summary>
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public override void OnSeriesUpdateStart()
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{
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ActiveSplitters = 0;
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if (SplittersCollector == int.MaxValue - 1)
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{
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//just in case!
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Splitters.ForEach(s => s.SplitterCollectorIndex = 0);
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SplittersCollector = 0;
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}
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SplittersCollector++;
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if (IsPathInitialized)
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{
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Model.Chart.View.EnsureElementBelongsToCurrentDrawMargin(Path);
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Path.Stroke = Stroke;
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Path.StrokeThickness = StrokeThickness;
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Path.Fill = Fill;
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Path.Visibility = Visibility;
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Path.StrokeDashArray = StrokeDashArray;
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Canvas.SetZIndex(Path, Canvas.GetZIndex(this));
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return;
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}
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IsPathInitialized = true;
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Path = new Path
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{
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Stroke = Stroke,
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StrokeThickness = StrokeThickness,
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Fill = Fill,
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Visibility = Visibility,
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StrokeDashArray = StrokeDashArray
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};
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Canvas.SetZIndex(Path, Canvas.GetZIndex(this));
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var geometry = new PathGeometry();
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Figure = new PathFigure();
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geometry.Figures.Add(Figure);
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Path.Data = geometry;
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Model.Chart.View.EnsureElementBelongsToCurrentDrawMargin(Path);
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}
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/// <summary>
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/// Gets the view of a given point
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/// </summary>
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/// <param name="point"></param>
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/// <param name="label"></param>
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/// <returns></returns>
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public override IChartPointView GetPointView(ChartPoint point, string label)
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{
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var mhr = PointGeometrySize < 10 ? 10 : PointGeometrySize;
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var pbv = (HorizontalBezierPointView) point.View;
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if (pbv == null)
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{
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pbv = new HorizontalBezierPointView
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{
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Segment = new BezierSegment(),
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Container = Figure,
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IsNew = true
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};
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}
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else
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{
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pbv.IsNew = false;
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point.SeriesView.Model.Chart.View
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.EnsureElementBelongsToCurrentDrawMargin(pbv.Shape);
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point.SeriesView.Model.Chart.View
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.EnsureElementBelongsToCurrentDrawMargin(pbv.HoverShape);
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point.SeriesView.Model.Chart.View
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.EnsureElementBelongsToCurrentDrawMargin(pbv.DataLabel);
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}
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if (Model.Chart.RequiresHoverShape && pbv.HoverShape == null)
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{
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pbv.HoverShape = new Rectangle
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{
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Fill = new SolidColorBrush(Windows.UI.Colors.Transparent),
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StrokeThickness = 0,
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Width = mhr,
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Height = mhr
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};
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Canvas.SetZIndex(pbv.HoverShape, short.MaxValue);
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var uwpfChart = (Chart)Model.Chart.View;
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uwpfChart.AttachHoverableEventTo(pbv.HoverShape);
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Model.Chart.View.AddToDrawMargin(pbv.HoverShape);
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}
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if (pbv.HoverShape != null) pbv.HoverShape.Visibility = Visibility;
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if (Math.Abs(PointGeometrySize) > 0.1 && pbv.Shape == null)
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{
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pbv.Shape = new Path
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{
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Stretch = Stretch.Fill,
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StrokeThickness = StrokeThickness
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};
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Model.Chart.View.AddToDrawMargin(pbv.Shape);
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}
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if (pbv.Shape != null)
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{
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pbv.Shape.Fill = PointForeround;
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pbv.Shape.Stroke = Stroke;
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pbv.Shape.StrokeThickness = StrokeThickness;
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pbv.Shape.Width = PointGeometrySize;
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pbv.Shape.Height = PointGeometrySize;
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pbv.Shape.Data = PointGeometry.Parse();
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pbv.Shape.Visibility = Visibility;
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Canvas.SetZIndex(pbv.Shape, Canvas.GetZIndex(this) + 1);
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if (point.Stroke != null) pbv.Shape.Stroke = (Brush) point.Stroke;
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if (point.Fill != null) pbv.Shape.Fill = (Brush) point.Fill;
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}
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if (DataLabels)
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{
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pbv.DataLabel = UpdateLabelContent(new DataLabelViewModel
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{
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FormattedText = label,
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Instance = point.Instance
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}, pbv.DataLabel);
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}
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return pbv;
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}
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/// <summary>
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/// This method runs when the update finishes
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/// </summary>
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public override void OnSeriesUpdatedFinish()
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{
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foreach (var inactive in Splitters
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.Where(s => s.SplitterCollectorIndex < SplittersCollector).ToList())
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{
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Figure.Segments.Remove(inactive.Left);
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Figure.Segments.Remove(inactive.Bottom);
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Figure.Segments.Remove(inactive.Right);
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Splitters.Remove(inactive);
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}
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}
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/// <summary>
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/// Erases series
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/// </summary>
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/// <param name="removeFromView"></param>
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public override void Erase(bool removeFromView = true)
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{
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ActualValues.GetPoints(this).ForEach(p =>
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{
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p.View?.RemoveFromView(Model.Chart);
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});
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if (Path != null) Path.Visibility = Visibility.Collapsed;
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if (removeFromView)
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{
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Model.Chart.View.RemoveFromDrawMargin(Path);
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Model.Chart.View.RemoveFromView(this);
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}
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}
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#endregion
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#region Public Methods
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/// <summary>
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/// Gets the point diameter.
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/// </summary>
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/// <returns></returns>
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public double GetPointDiameter()
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{
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return (PointGeometry == null ? 0 : PointGeometrySize)/2;
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}
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/// <summary>
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/// Starts the segment.
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/// </summary>
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/// <param name="atIndex">At index.</param>
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/// <param name="location">The location.</param>
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public virtual void StartSegment(int atIndex, CorePoint location)
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{
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if (Splitters.Count <= ActiveSplitters)
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Splitters.Add(new LineSegmentSplitter {IsNew = true});
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var splitter = Splitters[ActiveSplitters];
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splitter.SplitterCollectorIndex = SplittersCollector;
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ActiveSplitters++;
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var animSpeed = Model.Chart.View.AnimationsSpeed;
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var noAnim = Model.Chart.View.DisableAnimations;
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var areaLimit = ChartFunctions.ToDrawMargin(double.IsNaN(AreaLimit)
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? Model.Chart.AxisY[ScalesYAt].FirstSeparator
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: AreaLimit, AxisOrientation.Y, Model.Chart, ScalesYAt);
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if (Values != null && atIndex == 0)
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{
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if (Model.Chart.View.DisableAnimations || IsNew)
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Figure.StartPoint = new Point(location.X, areaLimit);
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else
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Figure.BeginPointAnimation(nameof(PathFigure.StartPoint),
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new Point(location.X, areaLimit), Model.Chart.View.AnimationsSpeed);
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IsNew = false;
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}
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if (atIndex != 0)
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{
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Figure.Segments.Remove(splitter.Bottom);
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if (splitter.IsNew)
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{
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splitter.Bottom.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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splitter.Left.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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}
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if (noAnim)
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splitter.Bottom.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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else
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splitter.Bottom.BeginPointAnimation(nameof(LineSegment.Point), new Point(location.X, Model.Chart.DrawMargin.Height), animSpeed);
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Figure.Segments.Insert(atIndex, splitter.Bottom);
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Figure.Segments.Remove(splitter.Left);
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if (noAnim)
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splitter.Left.Point = location.AsPoint();
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else
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splitter.Left.BeginPointAnimation(nameof(LineSegment.Point), location.AsPoint(), animSpeed);
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Figure.Segments.Insert(atIndex + 1, splitter.Left);
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return;
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}
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if (splitter.IsNew)
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{
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splitter.Bottom.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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splitter.Left.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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}
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Figure.Segments.Remove(splitter.Left);
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if (Model.Chart.View.DisableAnimations)
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splitter.Left.Point = location.AsPoint();
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else
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splitter.Left.BeginPointAnimation(nameof(LineSegment.Point), location.AsPoint(), animSpeed);
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Figure.Segments.Insert(atIndex, splitter.Left);
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}
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/// <summary>
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/// Ends the segment.
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/// </summary>
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/// <param name="atIndex">At index.</param>
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/// <param name="location">The location.</param>
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public virtual void EndSegment(int atIndex, CorePoint location)
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{
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var splitter = Splitters[ActiveSplitters - 1];
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var animSpeed = Model.Chart.View.AnimationsSpeed;
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var noAnim = Model.Chart.View.DisableAnimations;
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var areaLimit = ChartFunctions.ToDrawMargin(double.IsNaN(AreaLimit)
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? Model.Chart.AxisY[ScalesYAt].FirstSeparator
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: AreaLimit, AxisOrientation.Y, Model.Chart, ScalesYAt);
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var uw = Model.Chart.AxisX[ScalesXAt].EvaluatesUnitWidth
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? ChartFunctions.GetUnitWidth(AxisOrientation.X, Model.Chart, ScalesXAt) / 2
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: 0;
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location.X -= uw;
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if (splitter.IsNew)
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{
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splitter.Right.Point = new Point(location.X, Model.Chart.DrawMargin.Height);
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}
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Figure.Segments.Remove(splitter.Right);
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if (noAnim)
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splitter.Right.Point = new Point(location.X, areaLimit);
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else
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splitter.Right.BeginPointAnimation(nameof(LineSegment.Point), new Point(location.X, areaLimit), animSpeed);
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Figure.Segments.Insert(atIndex, splitter.Right);
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splitter.IsNew = false;
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}
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#endregion
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#region Private Methods
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private void InitializeDefuaults()
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{
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Func<ChartPoint, string> defaultLabel = x => Model.CurrentYAxis.GetFormatter()(x.Y);
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this.SetIfNotSet(LabelPointProperty, defaultLabel);
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DefaultFillOpacity = 0.15;
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Splitters = new List<LineSegmentSplitter>();
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IsNew = true;
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}
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#endregion
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}
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}
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