protected void DetachFromItemsPanel()
{
ViewportHostPanel viewportItemsPanel = currentItemsPanel as ViewportHostPanel;
if (viewportItemsPanel != null)
{
viewportItemsPanel.ContentBoundsChanged -= viewportItemsPanel_ContentBoundsChanged;
}
if (viewportItemsPanel != null && plotter != null)
{
viewportItemsPanel.OnPlotterDetaching(plotter);
}
Content = null;
}
private void AddCircularArcGraph(Point startPoint, Point endPoint, Size size)
{
PathFigure pf = new PathFigure();
pf.StartPoint = new Point(startPoint.X, startPoint.Y);
ArcSegment arcSegment = new ArcSegment();
arcSegment.Point = new Point(endPoint.X, endPoint.Y);
arcSegment.Size = size;
arcSegment.SweepDirection = SweepDirection.Counterclockwise;
PathSegmentCollection psc = new PathSegmentCollection();
psc.Add(arcSegment);
pf.Segments = psc;
PathFigureCollection pfc = new PathFigureCollection();
pfc.Add(pf);
PathGeometry pg = new PathGeometry();
pg.Figures = pfc;
var path = new Path();
path.Stroke = Brushes.Black;
path.StrokeThickness = 1;
path.Data = pg;
path.Fill = Brushes.Orange;
path.Stretch = Stretch.Fill;
var viewportPanel = new ViewportHostPanel();
ViewportPanel.SetViewportBounds(path, new DataRect(0, 0, 50, 50));
viewportPanel.Children.Add(path);
plotter.Children.Add(viewportPanel);
}
protected virtual void DrawAllMarkers(bool reuseExisting, bool continueAfterDataPrepaired)
{
if (!IsReadyToDrawMarkers())
{
return;
}
var dataSource = DataSource;
dataSource.Environment = new DataSourceEnvironment {
Plotter = this.Plotter, FirstDraw = true
};
if (!continueAfterDataPrepaired)
{
dataSource.PrepairData(getDataAsyncronously);
if (getDataAsyncronously)
{
LongOperationsIndicator.BeginLongOperation(this);
return;
}
}
BuildCommonBindings();
startIndex = 0;
lastIndex = startIndex;
IndividualArrangePanel panel = CurrentItemsPanel as IndividualArrangePanel;
if (panel != null)
{
panel.BeginBatchAdd();
}
ViewportHostPanel viewportPanel = CurrentItemsPanel as ViewportHostPanel;
if (viewportPanel != null)
{
viewportPanel.OverallViewportBounds = DataRect.Empty;
}
foreach (var dataItem in dataSource.GetData())
{
lastIndex += CreateAndAddMarker(dataItem, lastIndex);
if (showMarkersConsequently && lastIndex % 1000 == 0)
{
// make dispatcher execute all operations in its queue;
// so that markers will appear on the screen step-by-step,
// making application more responsive.
Dispatcher.Invoke(() => { }, DispatcherPriority.Background);
}
}
int len = CurrentItemsPanel.Children.Count;
if (lastIndex < len)
{
for (int i = lastIndex; i < len; i++)
{
UIElement element = CurrentItemsPanel.Children[i];
element.Visibility = Visibility.Collapsed;
}
}
if (panel != null)
{
panel.EndBatchAdd();
}
LongOperationsIndicator.EndLongOperation(this);
}
