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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using RealTimeGraphEx.Models;
using RealTimeGraphEx.DataSeries;
using RealTimeGraphEx.Controllers;
using System.Runtime.ExceptionServices;
namespace RealTimeGraphEx.FastGraphs
{
public class RealTimeGraphExMultiLineScroll : RealTimeGraphExMultiBase
{
private GraphMultiController _lastController;
#region Cross Thread Fields
protected List<ConcurrentpointsList> _graphPolygons;
protected Color _stroke;
protected Color _fill;
protected bool _fillGraph;
protected List<double> _markers;
#endregion
#region Constructors
public RealTimeGraphExMultiLineScroll()
: base()
{
_graphPolygons = new List<ConcurrentpointsList>();
_graphController = new GraphMultiController();
_markers = new List<double>();
}
#endregion
#region Properties
/// <summary>
/// Gets or sets the graph strokes color.
/// </summary>
public Color Stroke
{
get { return (Color)GetValue(StrokeProperty); }
set { SetValue(StrokeProperty, value); }
}
public static readonly DependencyProperty StrokeProperty =
DependencyProperty.Register("Stroke", typeof(Color), typeof(RealTimeGraphExMultiLineScroll), new PropertyMetadata(Colors.Black, new PropertyChangedCallback(CrossModelChanged)));
/// <summary>
/// Gets or sets the graph fill color.
/// </summary>
public Color Fill
{
get { return (Color)GetValue(FillProperty); }
set { SetValue(FillProperty, value); }
}
public static readonly DependencyProperty FillProperty =
DependencyProperty.Register("Fill", typeof(Color), typeof(RealTimeGraphExMultiLineScroll), new PropertyMetadata(Colors.Transparent, new PropertyChangedCallback(CrossModelChanged)));
/// <summary>
/// Gets or sets whether the graph will be rendered using the Fill color property.
/// </summary>
public bool FillGraph
{
get { return (bool)GetValue(FillGraphProperty); }
set { SetValue(FillGraphProperty, value); }
}
public static readonly DependencyProperty FillGraphProperty =
DependencyProperty.Register("FillGraph", typeof(bool), typeof(RealTimeGraphExMultiLineScroll), new PropertyMetadata(false, new PropertyChangedCallback(CrossModelChanged)));
#endregion
#region Override Methods
protected override void OnControllerChanged()
{
if (_graphController != null)
{
if (_lastController != _graphController)
{
_graphPolygons.Clear();
_graphController.RegisterMethods(ClearGraph, StartPushThread, SetPaused, ChangeRenderMode, OnPushMarker);
foreach (var dataSeries in _graphController.DataSeriesCollection)
{
_graphPolygons.Add(new ConcurrentpointsList());
}
_lastController = _graphController;
}
}
}
protected override void OnSizeChanged(object sender, SizeChangedEventArgs e)
{
OnSetCrossThreadFields();
}
protected override void OnSetCrossThreadFields()
{
base.OnSetCrossThreadFields();
this.Dispatcher.Invoke(() =>
{
_maxPoints = MaxPoints;
_scaleFactor = _width / _maxPoints;
}, System.Windows.Threading.DispatcherPriority.Send);
}
protected override void OnClearGraph()
{
_graphPolygons.ForEach(x => x.Clear());
_graphController.ClearPoints();
base.OnClearGraph();
}
protected internal override void OnRenderGraph()
{
if (_graphController != null && _graphController.dataSeriesCollection.Count > 0 && _graphController.TotalPoints > 0 && _width > 1 && _height > 1)
{
var pointsCollection = _graphController.GetAndClearAllPoints();
if (_useAutoRange && pointsCollection.Count > 0)
{
Dispatcher.Invoke(() =>
{
Maximum = pointsCollection.SelectMany(x => x).Concat(_graphPolygons.SelectMany(x => x.GetPoints())).Max();
Minimum = pointsCollection.SelectMany(x => x).Concat(_graphPolygons.SelectMany(x => x.GetPoints())).Min();
});
}
if (!_isPaused)
{
Parallel.For(0, pointsCollection.Count, (i) =>
{
double seriesCounter = xValueCounter;
for (int j = 0; j < pointsCollection[(int)i].Count; j++)
{
double value = pointsCollection[(int)i][j];
NormalizeValue(ref value);
_graphPolygons[i].Add(value);
seriesCounter += _scaleFactor;
}
});
xValueCounter += (pointsCollection[0].Count * _scaleFactor);
if (_graphPolygons[0].Count > _maxPoints + _graphController.dataSeriesCollection[0].Points.Count)
{
xValueCounter -= (_scaleFactor * (_graphPolygons[0].Count - (_maxPoints + _graphController.dataSeriesCollection[0].Points.Count)));
Parallel.ForEach(_graphPolygons, (polygon) =>
{
polygon.RemoveFromStart(polygon.Count - (_maxPoints + _graphController.dataSeriesCollection[0].Points.Count));
});
}
}
updateCounter++;
if (updateCounter >= 1)
{
updateCounter = 0;
if (!_disableRendering)
{
WriteableBitmap bmp = BitmapFactory.New((int)_mainWidth, (int)_mainHeight);
bmp.Clear(Colors.Transparent);
OnDrawVisuals(bmp);
bmp.Freeze();
img.Dispatcher.BeginInvoke(new Action(() =>
{
img.Source = bmp;
}), System.Windows.Threading.DispatcherPriority.Send);
}
}
}
}
protected override void OnZoomingComplete(Point transformOrigin, double scaleX, double scaleY)
{
base.OnZoomingComplete(transformOrigin, scaleX, scaleY);
if (IsPaused)
{
WriteableBitmap bmp = BitmapFactory.New((int)_width, (int)_height);
bmp.Clear(Colors.Transparent);
OnDrawVisuals(bmp);
bmp.Freeze();
img.Dispatcher.BeginInvoke(new Action(() =>
{
img.Source = bmp;
}), System.Windows.Threading.DispatcherPriority.Send);
}
}
protected override void OnDragging(System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
base.OnDragging(e);
}
#endregion
#region Virtual Methods
[HandleProcessCorruptedStateExceptions]
protected virtual void OnDrawVisuals(WriteableBitmap bmp)
{
for (int i = 0; i < _graphPolygons.Count; i++)
{
Color stroke = _graphController.dataSeriesCollection[i].GetStrokeColor() != null ? _graphController.dataSeriesCollection[i].GetStrokeColor().Value : _stroke;
Color? fill = _graphController.dataSeriesCollection[i].GetFillColor();
_fillGraph = fill != Colors.Transparent && fill != null;
var polygon = _graphPolygons[i];
double scale = _width / (polygon.Count - 1);
if (polygon.Count > 0)
{
if (_fillGraph && _graphController.dataSeriesCollection[i].isVisible) //Fill Graph
{
bmp.FillPolygon(polygon.ToPolygonPointsFill(_offSetX, _offSetY, _width, _height, scale, ConvertYToImageYFliped), fill.Value);
}
if (_graphController.dataSeriesCollection[i].isVisible)
{
DrawPolyline(bmp, polygon.ToPolygonPoints(_offSetX, _offSetY, scale, ConvertYToImageYFliped), stroke);
}
}
for (int j = 0; j < _markers.Count; j++)
{
int x = (int)((_markers[j] * scale) + _offSetX);
bmp.DrawLine(x, 0, x, (int)_mainHeight, Colors.Silver);
}
}
}
public virtual List<double> GetCurrentPointsOnGraph(int seriesIndex)
{
return _graphPolygons[seriesIndex].GetPoints();
}
protected virtual void OnPushMarker()
{
}
#endregion
}
}
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