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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Shapes;
namespace RealTimeGraphEx.ReachGraphs
{
public class RealTimeGraphExReachLineErase : RealTimeGraphExReachLineScroll, INotifyPropertyChanged
{
#region Cross Thread Fields
protected Brush _markerColor;
protected bool _showMarker;
protected bool _endReached;
protected int _currentReplaceIndex;
protected bool _enableMarkerPosition;
protected double lastVirtualValue;
protected Rectangle marker;
#endregion
#region Properties
/// <summary>
/// Gets or sets the graph marker color.
/// </summary>
public Brush MarkerBrush
{
get { return (Brush)GetValue(MarkerBrushProperty); }
set { SetValue(MarkerBrushProperty, value); }
}
public static readonly DependencyProperty MarkerBrushProperty =
DependencyProperty.Register("MarkerBrush", typeof(Brush), typeof(RealTimeGraphExReachLineErase), new PropertyMetadata(Brushes.Red, new PropertyChangedCallback(CrossModelChanged)));
/// <summary>
/// Gets or sets whether to display the marker on the graph.
/// </summary>
public bool ShowMarker
{
get { return (bool)GetValue(ShowMarkerProperty); }
set { SetValue(ShowMarkerProperty, value); }
}
public static readonly DependencyProperty ShowMarkerProperty =
DependencyProperty.Register("ShowMarker", typeof(bool), typeof(RealTimeGraphExReachLineErase), new PropertyMetadata(true, new PropertyChangedCallback(CrossModelChanged)));
/// <summary>
/// Gets or sets a value indicating whether to enable the MarkerPosition property to be updated. (Affects performance).
/// </summary>
public bool EnableMarkerPosition
{
get { return (bool)GetValue(EnableMarkerPositionProperty); }
set { SetValue(EnableMarkerPositionProperty, value); }
}
public static readonly DependencyProperty EnableMarkerPositionProperty =
DependencyProperty.Register("EnableMarkerPosition", typeof(bool), typeof(RealTimeGraphExReachLineErase), new PropertyMetadata(false, new PropertyChangedCallback(CrossModelChanged)));
/// <summary>
/// Gets the current marker position on the graph.
/// </summary>
private Point markerPosition;
public Point MarkerPosition
{
private get { return markerPosition; }
set { markerPosition = value; RaisePropertyChanged("MarkerPosition"); }
}
#endregion
#region Constructors
public RealTimeGraphExReachLineErase()
: base()
{
}
#endregion
#region Override Method
protected override void OnClearGraph()
{
base.OnClearGraph();
_currentReplaceIndex = 0;
_endReached = false;
this.Dispatcher.Invoke(() =>
{
marker.RenderTransform = new TranslateTransform(0, 0);
});
}
protected override void Initialize()
{
base.Initialize();
marker = new Rectangle() { VerticalAlignment = System.Windows.VerticalAlignment.Stretch, Width = 1, Fill = MarkerBrush, HorizontalAlignment = System.Windows.HorizontalAlignment.Left, Margin = new Thickness(-2, 0, 0, 0) };
if (!gridLinesAndImageWrapperGrid.Children.Contains(marker))
{
gridLinesAndImageWrapperGrid.Children.Add(marker);
}
}
protected override void OnSetCrossThreadFields()
{
base.OnSetCrossThreadFields();
this.Dispatcher.Invoke(() =>
{
_markerColor = MarkerBrush;
_showMarker = ShowMarker;
_enableMarkerPosition = EnableMarkerPosition;
}, System.Windows.Threading.DispatcherPriority.Send);
}
protected internal override void OnRenderGraph()
{
if (_graphController.dataSeries != null && _graphController.dataSeries.Points != null && _graphController.dataSeries.Points.Count > 0 && _width > 1 && _height > 1)
{
var points = _graphController.dataSeries.Points.GetAndClearAllPoints();
if (!_isPaused)
{
for (int i = 0; i < points.Count; i++)
{
double value = points[i];
lastVirtualValue = value;
if (xValueCounter <= _width)
{
if (!_endReached)
{
graphPolygon.Add(value);
xValueCounter += _scaleFactor;
}
else
{
graphPolygon.Replace(value, _currentReplaceIndex++);
xValueCounter += _scaleFactor;
if (_currentReplaceIndex > graphPolygon.Count - 1)
{
xValueCounter = 0;
_currentReplaceIndex = 0;
}
}
}
else
{
_endReached = true;
xValueCounter = 0;
graphPolygon.Replace(value, _currentReplaceIndex++);
xValueCounter += _scaleFactor;
}
}
}
updateCounter++;
if (updateCounter >= 1 && !_isPaused)
{
updateCounter = 0;
if (!_disableRendering)
{
OnDrawVisuals();
}
}
}
}
protected override void OnDrawVisuals()
{
base.OnDrawVisuals();
double scale = GetPolygonScaleFactor();
this.Dispatcher.Invoke(() =>
{
double x = ((_currentReplaceIndex * scale));
marker.RenderTransform = new TranslateTransform((x) - 2, 0);
});
}
#endregion
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
public void RaisePropertyChanged(String propName)
{
this.Dispatcher.Invoke(() =>
{
if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(propName));
});
}
#endregion
}
}
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