private bool CheckDataInUpdateBounds(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
var dataToPoint = chart.DataSource.DataToPoint;
if (dataToPoint == null)
{
return(true);
}
if (e.NewItems != null)
{
foreach (var dataItem in e.NewItems)
{
var point = dataToPoint(dataItem);
if (increasedVisible.Contains(point))
{
return(true);
}
}
}
if (e.OldItems != null)
{
foreach (var dataItem in e.OldItems)
{
var point = dataToPoint(dataItem);
if (increasedVisible.Contains(point))
{
return(true);
}
}
}
return(false);
}
public override void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
chart.OnAdded(e);
break;
case NotifyCollectionChangedAction.Move:
chart.OnMoved(e);
break;
case NotifyCollectionChangedAction.Remove:
chart.OnRemoved(e);
break;
case NotifyCollectionChangedAction.Replace:
chart.OnReplaced(e);
break;
case NotifyCollectionChangedAction.Reset:
chart.OnReset();
break;
}
}
private bool CheckDataInUpdateBounds(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
var dataToPoint = chart.DataSource.DataToPoint;
if (dataToPoint == null)
return true;
if (e.NewItems != null)
{
foreach (var dataItem in e.NewItems)
{
var point = dataToPoint(dataItem);
if (increasedVisible.Contains(point))
return true;
}
}
if (e.OldItems != null)
{
foreach (var dataItem in e.OldItems)
{
var point = dataToPoint(dataItem);
if (increasedVisible.Contains(point))
return true;
}
}
return false;
}
private static void OnItemsPanelTemplateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PointChartBase chart = (PointChartBase)d;
if (e.NewValue != null)
{
chart.OnItemsPanelChanged();
}
}
private static void OnIndependentValueMappingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PointChartBase owner = (PointChartBase)d;
string path = (string)e.NewValue;
if (path == null)
{
owner.IndependentValueBinding = null;
}
else
{
owner.IndependentValueBinding = new Binding(path);
}
}
private static object CoerceIndependentValuePath(DependencyObject d, object value)
{
PointChartBase chart = (PointChartBase)d;
string path = (string)value;
if (!String.IsNullOrEmpty(path))
{
return(value);
}
if (chart.independentValueBinding != null)
{
return(chart.independentValueBinding.Path.Path);
}
return(null);
}
public override void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Move:
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Replace:
if (CheckDataInUpdateBounds(e, chart))
{
base.OnUpdate(e, chart);
}
break;
case NotifyCollectionChangedAction.Reset:
base.OnUpdate(e, chart);
break;
}
}
public override void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Move:
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Replace:
if (CheckDataInUpdateBounds(e, chart))
{
base.OnUpdate(e, chart);
}
break;
case NotifyCollectionChangedAction.Reset:
base.OnUpdate(e, chart);
break;
default:
break;
}
}
public override void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
chart.OnAdded(e);
break;
case NotifyCollectionChangedAction.Move:
chart.OnMoved(e);
break;
case NotifyCollectionChangedAction.Remove:
chart.OnRemoved(e);
break;
case NotifyCollectionChangedAction.Replace:
chart.OnReplaced(e);
break;
case NotifyCollectionChangedAction.Reset:
chart.OnReset();
break;
default:
break;
}
}
private static void OnDataSourceReplaced(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PointChartBase owner = (PointChartBase)d;
owner.OnDataSourceReplaced((PointDataSourceBase)e.OldValue, (PointDataSourceBase)e.NewValue);
}
public override void OnPlotterDetached(Plotter2D plotter, PointChartBase chart)
{
plotter.Viewport.PropertyChanged -= Viewport_PropertyChanged;
this.chart = null;
}
public virtual void OnPlotterDetached(Plotter2D plotter, PointChartBase chart) { }
public override void OnPlotterDetached(Plotter2D plotter, PointChartBase chart)
{
plotter.Viewport.PropertyChanged -= Viewport_PropertyChanged;
this.chart = null;
}
public override void OnPlotterAttached(Plotter2D plotter, PointChartBase chart)
{
this.chart = chart;
increasedVisible = plotter.Visible.ZoomOutFromCenter(2.0);
plotter.Viewport.PropertyChanged += Viewport_PropertyChanged;
}
public virtual void OnPlotterAttached(Plotter2D plotter, PointChartBase chart)
{
}
public abstract void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart);
public override void OnPlotterAttached(Plotter2D plotter, PointChartBase chart)
{
this.chart = chart;
increasedVisible = plotter.Visible.ZoomOutFromCenter(2.0);
plotter.Viewport.PropertyChanged += Viewport_PropertyChanged;
}
private static void OnItemsSourceReplaced(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PointChartBase chart = (PointChartBase)d;
chart.OnItemsSourceReplaced(e);
}
public abstract void OnUpdate(NotifyCollectionChangedEventArgs e, PointChartBase chart);
