private void OnPieSliceClicked(object sender, ChartDataValue e)
{
if (e.UserData is SecurityGroup g && DrillDown != null)
{
// now we can drill down and show a report on just this group of investments.
DrillDown(this, g);
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
var pos = e.GetPosition(ChartCanvas);
var slice = FindSlice(pos);
if (slice != null)
{
ChartDataValue value = slice.Data;
if (PieSliceClicked != null)
{
PieSliceClicked(this, value);
}
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
var pos = e.GetPosition(this);
var info = FindColumn(pos);
if (info != null)
{
ChartDataValue value = info.Data;
if (ColumnClicked != null)
{
ColumnClicked(this, value);
}
}
}
public ChartColumn(ChartDataValue cv, NumberFormatInfo nfi, Color c1, double colWidth, double availableHeight, double range)
{
this.availableHeight = availableHeight;
if (range == 0)
{
range = availableHeight;
}
this.range = range;
vtext = new TextBlock();
Binding binding = new Binding();
binding.Source = this;
binding.Path = new PropertyPath("ColumnValue");
binding.Converter = new NumberConverter(nfi);
vtext.SetBinding(TextBlock.TextProperty, binding);
vtext.HorizontalAlignment = HorizontalAlignment.Center;
r = new Rectangle();
r.Width = colWidth;
r.Height = 0;
r.RadiusX = r.RadiusY = 2;
HlsColor hls = new HlsColor(c1);
hls.Lighten(.3f);
Color c2 = hls.Color;
hls = new HlsColor(c1);
hls.Darken(.3f);
Color stroke = hls.Color;
r.Stroke = new SolidColorBrush(stroke);
r.StrokeThickness = 1;
r.Fill = new LinearGradientBrush(c1, c2, new Point(0, 0), new Point(0, 1));
TextBlock label = new TextBlock();
label.Text = cv.Label;
label.HorizontalAlignment = HorizontalAlignment.Center;
this.Children.Add(vtext);
this.Children.Add(r);
this.Children.Add(label);
this.value = cv;
this.SetValue(ColumnValueProperty, cv.Value);
}
private UIElement OnGenerateToolTip(ChartDataValue value)
{
var tip = new StackPanel()
{
Orientation = Orientation.Vertical
};
tip.Children.Add(new TextBlock()
{
Text = value.Label, FontWeight = FontWeights.Bold
});
tip.Children.Add(new TextBlock()
{
Text = value.Value.ToString("C0")
});
return(tip);
}
private void OnHover()
{
var slice = this.inside;
if (slice == null)
{
return;
}
ChartDataValue value = slice.Data;
var tip = this.ToolTip as ToolTip;
var content = ToolTipGenerator != null?ToolTipGenerator(value) : new TextBlock()
{
Text = value.Label + "\r\n" + value.Value
};
if (tip == null)
{
tip = new ToolTip()
{
Placement = System.Windows.Controls.Primitives.PlacementMode.MousePoint,
Content = content,
IsOpen = true
};
this.ToolTip = tip;
}
else
{
tip.Content = content;
tip.IsOpen = true;
}
tip.Measure(new Size(100, 100));
tip.HorizontalOffset = 0;
tip.VerticalOffset = -tip.ActualHeight;
// notify any interested listeners
var h = this.PieSliceHover;
if (h != null)
{
h(this, value);
}
}
void UpdatePointer(Point pos)
{
if (data != null && data.Series.Count > 0 && scale != null && scale.ScaleX > 0)
{
if (selectedSeries == null)
{
selectedSeries = data.Series[data.Series.Count - 1];
}
Point legendPos = this.TransformToDescendant(legend).Transform(pos);
Rect legendArea = new Rect(0, 0, legend.ActualWidth, legend.ActualHeight);
bool insideLegend = (legendArea.Contains(legendPos));
if (pointer == null)
{
PathGeometry diamond = new PathGeometry();
PathFigure figure = new PathFigure();
diamond.Figures.Add(figure);
figure.IsClosed = true;
figure.IsFilled = true;
figure.StartPoint = new Point(0, -5);
figure.Segments.Add(new LineSegment(new Point(5, 0), true));
figure.Segments.Add(new LineSegment(new Point(0, 5), true));
figure.Segments.Add(new LineSegment(new Point(-5, 0), true));
pointer = new Path()
{
Data = diamond,
Fill = Brushes.Red
};
this.Children.Add(pointer);
}
if (tooltip == null)
{
tooltip = new Border();
tooltip.Padding = new Thickness(2);
tooltip.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
tooltip.VerticalAlignment = System.Windows.VerticalAlignment.Top;
tooltip.BorderBrush = AppTheme.Instance.GetThemedBrush("SystemControlForegroundBaseHighBrush");
tooltip.BorderThickness = new Thickness(1);
tooltip.Background = AppTheme.Instance.GetThemedBrush("SystemControlBackgroundBaseLowBrush");
this.Children.Add(tooltip);
}
ChartDataSeries series = selectedSeries;
var values = series.Values;
int i = (int)(pos.X / scale.ScaleX);
if (i >= 0 && i < values.Count)
{
ChartDataValue v = values[i];
Selected = v;
UIElement content = null;
if (this.ToolTipGenerator != null)
{
content = this.ToolTipGenerator(v);
}
else
{
var label = new TextBlock();
label.Foreground = Brushes.Black;
label.Text = v.Label;
content = label;
}
tooltip.Child = content;
if (insideLegend)
{
tooltip.Visibility = System.Windows.Visibility.Hidden;
}
else
{
tooltip.UpdateLayout();
double tipPositionX = pos.X;
if (tipPositionX + tooltip.ActualWidth > this.ActualWidth)
{
tipPositionX = this.ActualWidth - tooltip.ActualWidth;
}
double tipPositionY = pos.Y - tooltip.ActualHeight - 4;
if (tipPositionY < 0)
{
tipPositionY = 0;
}
tooltip.Margin = new Thickness(tipPositionX, tipPositionY, 0, 0);
tooltip.Visibility = System.Windows.Visibility.Visible;
}
double value = v.Value;
if (series.Flipped)
{
value = -value;
}
Point pointerPosition = transform.Transform(new Point(i, value));
pointer.RenderTransform = new TranslateTransform(pointerPosition.X, pointerPosition.Y);
pointer.Visibility = System.Windows.Visibility.Visible;
}
else
{
tooltip.Visibility = System.Windows.Visibility.Hidden;
pointer.Visibility = System.Windows.Visibility.Hidden;
}
}
else
{
// todo
}
}
