mirror of
https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-03-16 06:26:37 +08:00
250 lines
11 KiB
C#
250 lines
11 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.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Media.Animation;
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using System.Windows.Shapes;
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using LiveCharts.Charts;
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using LiveCharts.Definitions.Points;
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namespace LiveCharts.Wpf.Points
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{
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internal class StepLinePointView : PointView, IStepPointView
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{
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public double DeltaX { get; set; }
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public double DeltaY { get; set; }
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public Line Line1 { get; set; }
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public Line Line2 { get; set; }
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public Path Shape { get; set; }
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public override void DrawOrMove(ChartPoint previousDrawn, ChartPoint current, int index, ChartCore chart)
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{
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var invertedMode = ((StepLineSeries) current.SeriesView).InvertedMode;
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if (IsNew)
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{
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if (invertedMode)
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{
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Line1.X1 = current.ChartLocation.X;
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Line1.X2 = current.ChartLocation.X - DeltaX;
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Line1.Y1 = chart.DrawMargin.Height;
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Line1.Y2 = chart.DrawMargin.Height;
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Line2.X1 = current.ChartLocation.X - DeltaX;
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Line2.X2 = current.ChartLocation.X - DeltaX;
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Line2.Y1 = chart.DrawMargin.Height;
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Line2.Y2 = chart.DrawMargin.Height;
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}
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else
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{
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Line1.X1 = current.ChartLocation.X;
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Line1.X2 = current.ChartLocation.X;
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Line1.Y1 = chart.DrawMargin.Height;
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Line1.Y2 = chart.DrawMargin.Height;
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Line2.X1 = current.ChartLocation.X - DeltaX;
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Line2.X2 = current.ChartLocation.X;
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Line2.Y1 = chart.DrawMargin.Height;
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Line2.Y2 = chart.DrawMargin.Height;
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}
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if (Shape != null)
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{
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Canvas.SetLeft(Shape, current.ChartLocation.X - Shape.Width/2);
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Canvas.SetTop(Shape, chart.DrawMargin.Height);
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}
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}
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if (DataLabel != null && double.IsNaN(Canvas.GetLeft(DataLabel)))
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{
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Canvas.SetTop(DataLabel, chart.DrawMargin.Height);
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Canvas.SetLeft(DataLabel, current.ChartLocation.X);
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}
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if (HoverShape != null)
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{
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HoverShape.Width = Shape != null ? (Shape.Width > 5 ? Shape.Width : 5) : 5;
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HoverShape.Height = Shape != null ? (Shape.Height > 5 ? Shape.Height : 5) : 5;
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Canvas.SetLeft(HoverShape, current.ChartLocation.X - HoverShape.Width / 2);
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Canvas.SetTop(HoverShape, current.ChartLocation.Y - HoverShape.Height / 2);
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}
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if (chart.View.DisableAnimations)
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{
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if (invertedMode)
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{
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Line1.X1 = current.ChartLocation.X;
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Line1.X2 = current.ChartLocation.X - DeltaX;
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Line1.Y1 = current.ChartLocation.Y;
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Line1.Y2 = current.ChartLocation.Y;
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Line2.X1 = current.ChartLocation.X - DeltaX;
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Line2.X2 = current.ChartLocation.X - DeltaX;
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Line2.Y1 = current.ChartLocation.Y;
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Line2.Y2 = current.ChartLocation.Y - DeltaY;
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}
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else
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{
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Line1.X1 = current.ChartLocation.X;
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Line1.X2 = current.ChartLocation.X;
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Line1.Y1 = current.ChartLocation.Y;
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Line1.Y2 = current.ChartLocation.Y - DeltaY;
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Line2.X1 = current.ChartLocation.X - DeltaX;
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Line2.X2 = current.ChartLocation.X;
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Line2.Y1 = current.ChartLocation.Y - DeltaY;
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Line2.Y2 = current.ChartLocation.Y - DeltaY;
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}
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if (Shape != null)
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{
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Canvas.SetLeft(Shape, current.ChartLocation.X - Shape.Width/2);
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Canvas.SetTop(Shape, current.ChartLocation.Y - Shape.Height/2);
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}
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if (DataLabel != null)
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{
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DataLabel.UpdateLayout();
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var xl = CorrectXLabel(current.ChartLocation.X - DataLabel.ActualWidth * .5, chart);
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var yl = CorrectYLabel(current.ChartLocation.Y - DataLabel.ActualHeight * .5, chart);
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Canvas.SetLeft(DataLabel, xl);
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Canvas.SetTop(DataLabel, yl);
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}
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return;
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}
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var animSpeed = chart.View.AnimationsSpeed;
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if (invertedMode)
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{
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Line1.BeginAnimation(Line.X1Property,
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new DoubleAnimation(current.ChartLocation.X, animSpeed));
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Line1.BeginAnimation(Line.X2Property,
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new DoubleAnimation(current.ChartLocation.X - DeltaX, animSpeed));
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Line1.BeginAnimation(Line.Y1Property,
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new DoubleAnimation(current.ChartLocation.Y, animSpeed));
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Line1.BeginAnimation(Line.Y2Property,
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new DoubleAnimation(current.ChartLocation.Y, animSpeed));
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Line2.BeginAnimation(Line.X1Property,
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new DoubleAnimation(current.ChartLocation.X - DeltaX, animSpeed));
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Line2.BeginAnimation(Line.X2Property,
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new DoubleAnimation(current.ChartLocation.X - DeltaX, animSpeed));
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Line2.BeginAnimation(Line.Y1Property,
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new DoubleAnimation(current.ChartLocation.Y, animSpeed));
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Line2.BeginAnimation(Line.Y2Property,
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new DoubleAnimation(current.ChartLocation.Y - DeltaY, animSpeed));
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}
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else
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{
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Line1.BeginAnimation(Line.X1Property,
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new DoubleAnimation(current.ChartLocation.X, animSpeed));
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Line1.BeginAnimation(Line.X2Property,
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new DoubleAnimation(current.ChartLocation.X, animSpeed));
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Line1.BeginAnimation(Line.Y1Property,
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new DoubleAnimation(current.ChartLocation.Y, animSpeed));
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Line1.BeginAnimation(Line.Y2Property,
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new DoubleAnimation(current.ChartLocation.Y - DeltaY, animSpeed));
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Line2.BeginAnimation(Line.X1Property,
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new DoubleAnimation(current.ChartLocation.X - DeltaX, animSpeed));
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Line2.BeginAnimation(Line.X2Property,
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new DoubleAnimation(current.ChartLocation.X, animSpeed));
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Line2.BeginAnimation(Line.Y1Property,
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new DoubleAnimation(current.ChartLocation.Y - DeltaY, animSpeed));
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Line2.BeginAnimation(Line.Y2Property,
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new DoubleAnimation(current.ChartLocation.Y - DeltaY, animSpeed));
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}
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if (Shape != null)
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{
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Shape.BeginAnimation(Canvas.LeftProperty,
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new DoubleAnimation(current.ChartLocation.X - Shape.Width/2, animSpeed));
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Shape.BeginAnimation(Canvas.TopProperty,
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new DoubleAnimation(current.ChartLocation.Y - Shape.Height/2, animSpeed));
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}
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if (DataLabel != null)
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{
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DataLabel.UpdateLayout();
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var xl = CorrectXLabel(current.ChartLocation.X - DataLabel.ActualWidth * .5, chart);
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var yl = CorrectYLabel(current.ChartLocation.Y - DataLabel.ActualHeight * .5, chart);
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Canvas.SetLeft(DataLabel, xl);
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Canvas.SetTop(DataLabel, yl);
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}
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}
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public override void RemoveFromView(ChartCore chart)
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{
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chart.View.RemoveFromDrawMargin(HoverShape);
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chart.View.RemoveFromDrawMargin(Shape);
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chart.View.RemoveFromDrawMargin(DataLabel);
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chart.View.RemoveFromDrawMargin(Line1);
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chart.View.RemoveFromDrawMargin(Line2);
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}
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public override void OnHover(ChartPoint point)
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{
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var lineSeries = (StepLineSeries) point.SeriesView;
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if (Shape != null) Shape.Fill = Shape.Stroke;
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lineSeries.StrokeThickness = lineSeries.StrokeThickness + 1;
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}
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public override void OnHoverLeave(ChartPoint point)
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{
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var lineSeries = (StepLineSeries) point.SeriesView;
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if (Shape != null)
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Shape.Fill = point.Fill == null
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? lineSeries.PointForeground
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: (Brush) point.Fill;
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lineSeries.StrokeThickness = lineSeries.StrokeThickness - 1;
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}
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protected double CorrectXLabel(double desiredPosition, ChartCore chart)
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{
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if (desiredPosition + DataLabel.ActualWidth * .5 < -0.1) return -DataLabel.ActualWidth;
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if (desiredPosition + DataLabel.ActualWidth > chart.DrawMargin.Width)
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desiredPosition -= desiredPosition + DataLabel.ActualWidth - chart.DrawMargin.Width + 2;
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if (desiredPosition < 0) desiredPosition = 0;
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return desiredPosition;
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}
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protected double CorrectYLabel(double desiredPosition, ChartCore chart)
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{
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desiredPosition -= (Shape == null ? 0 : Shape.ActualHeight * .5) + DataLabel.ActualHeight * .5 + 2;
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if (desiredPosition + DataLabel.ActualHeight > chart.DrawMargin.Height)
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desiredPosition -= desiredPosition + DataLabel.ActualHeight - chart.DrawMargin.Height + 2;
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if (desiredPosition < 0) desiredPosition = 0;
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return desiredPosition;
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}
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}
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}
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