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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.ExceptionServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace RealTimeGraphEx.FastGraphs
{
public class RealTimeGraphExMultiLineErase : RealTimeGraphExMultiLineScroll
{
#region Cross Thread Fields
protected Color _markerColor;
protected bool _showMarker;
protected bool _endReached;
protected int _currentReplaceIndex;
#endregion
#region Constructors
public RealTimeGraphExMultiLineErase()
: base()
{
}
#endregion
#region Properties
/// <summary>
/// Gets or sets the graph marker color.
/// </summary>
public Color MarkerColor
{
get { return (Color)GetValue(MarkerColorProperty); }
set { SetValue(MarkerColorProperty, value); }
}
public static readonly DependencyProperty MarkerColorProperty =
DependencyProperty.Register("MarkerBrush", typeof(Color), typeof(RealTimeGraphExMultiLineErase), new PropertyMetadata(Colors.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(RealTimeGraphExMultiLineErase), new PropertyMetadata(true, new PropertyChangedCallback(CrossModelChanged)));
#endregion
#region Override Methods
protected override void OnSetCrossThreadFields()
{
base.OnSetCrossThreadFields();
this.Dispatcher.Invoke(() =>
{
_markerColor = MarkerColor;
_showMarker = ShowMarker;
}, System.Windows.Threading.DispatcherPriority.Send);
}
protected override void OnClearGraph()
{
base.OnClearGraph();
_currentReplaceIndex = 0;
_endReached = false;
}
protected internal override void OnRenderGraph()
{
if (_graphController != null && _graphController.dataSeriesCollection.Count > 0 && _graphController.TotalPoints > 0 && _width > 1 && _height > 1)
{
var pointsCollection = _graphController.GetAndClearAllPoints();
if (!_isPaused)
{
for (int i = 0; i < pointsCollection[0].Count; i++)
{
if (xValueCounter <= _width)
{
if (!_endReached)
{
for (int j = 0; j < pointsCollection.Count; j++)
{
double value = pointsCollection[j][i];
NormalizeValue(ref value);
_graphPolygons[j].Add(value);
}
xValueCounter += _scaleFactor;
}
else
{
for (int j = 0; j < pointsCollection.Count; j++)
{
double value = pointsCollection[j][i];
NormalizeValue(ref value);
_graphPolygons[j].Replace(value, _currentReplaceIndex);
if (j == pointsCollection.Count - 1)
{
_currentReplaceIndex++;
for (int k = 0; k < _markers.Count; k++)
{
if (_markers[k] == _currentReplaceIndex)
{
_markers.RemoveAt(k);
k--;
}
}
}
}
xValueCounter += _scaleFactor;
if (_currentReplaceIndex > _graphPolygons[0].Count - 1)
{
xValueCounter = 0;
_currentReplaceIndex = 0;
}
}
}
else
{
_endReached = true;
xValueCounter = 0;
for (int j = 0; j < pointsCollection.Count; j++)
{
double value = pointsCollection[j][i];
NormalizeValue(ref value);
_graphPolygons[j].Replace(value, _currentReplaceIndex);
if (j == pointsCollection.Count - 1)
{
_currentReplaceIndex++;
}
}
xValueCounter += _scaleFactor;
}
}
}
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 OnPushMarker()
{
if (_currentReplaceIndex != 0)
{
_markers.Add(_currentReplaceIndex);
}
}
[HandleProcessCorruptedStateExceptions]
protected override void OnDrawVisuals(WriteableBitmap bmp)
{
if (_graphController == null) return;
base.OnDrawVisuals(bmp);
var polygon = _graphPolygons[0];
double scale = _width / polygon.Count;
//Draw marker
if (_showMarker)
{
if (_currentReplaceIndex > 0)
{
try
{
double x = ((_currentReplaceIndex * scale) + _offSetX);
bmp.DrawLine((int)x, 0, (int)x, (int)_mainHeight, _markerColor);
}
catch
{
Debug.WriteLine("[RealTimeGraphExMultiLineErase] [OnDrawVisuals] Error on drawing marker!");
}
}
}
}
#endregion
}
}
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