private bool GetArea(int s, bool isUp, out LineAndAreaShape area, out Point ofPt)
{
var isNew = false;
ofPt = new Point();
if (_areas.Count <= s)
{
var path = new Path();
BindingOperations.SetBinding(path, Shape.StrokeProperty,
new Binding {
Path = new PropertyPath("Stroke"), Source = this
});
BindingOperations.SetBinding(path, Shape.FillProperty,
new Binding {
Path = new PropertyPath("Fill"), Source = this
});
BindingOperations.SetBinding(path, Shape.StrokeThicknessProperty,
new Binding {
Path = new PropertyPath("StrokeThickness"), Source = this
});
BindingOperations.SetBinding(path, VisibilityProperty,
new Binding {
Path = new PropertyPath("Visibility"), Source = this
});
BindingOperations.SetBinding(path, Panel.ZIndexProperty,
new Binding {
Path = new PropertyPath(Panel.ZIndexProperty), Source = this
});
BindingOperations.SetBinding(path, Shape.StrokeDashArrayProperty,
new Binding {
Path = new PropertyPath(StrokeDashArrayProperty), Source = this
});
var geometry = new PathGeometry();
area = new LineAndAreaShape(new PathFigure(), path);
geometry.Figures.Add(area.Figure);
path.Data = geometry;
_areas.Add(area);
Chart.DrawMargin.Children.Add(path);
isNew = true;
if (isUp)
{
if (Chart.Invert)
{
ofPt = new Point(0, Methods.GetUnitWidth(AxisTags.Y, Chart, ScalesYAt) * .5);
Canvas.SetTop(path, ofPt.Y);
}
else
{
ofPt = new Point(Methods.GetUnitWidth(AxisTags.X, Chart, ScalesXAt) * .5, 0);
Canvas.SetLeft(path, ofPt.X);
}
}
}
else
{
area = _areas[s];
if (isUp)
{
if (Chart.Invert)
{
ofPt = new Point(0, Methods.GetUnitWidth(AxisTags.Y, Chart, ScalesYAt) * .5);
Canvas.SetTop(area.Path, ofPt.Y);
}
else
{
ofPt = new Point(Methods.GetUnitWidth(AxisTags.X, Chart, ScalesXAt) * .5, 0);
Canvas.SetLeft(area.Path, ofPt.X);
}
}
}
return(isNew);
}