public void IncrementValue(object key, double v)
{
total += v;
ChartValue cv = index[key];
cv.Value += v;
this.dirty = true;
}
public ChartColumn(ChartValue 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);
}
public void AddColumn(object key, string label, double value)
{
ChartValue cv = null;
if (!index.ContainsKey(key))
{
cv = new ChartValue(label, value, key);
values.Add(cv);
index[key] = cv;
}
else
{
cv = index[key];
cv.Value += value;
}
total += value;
this.dirty = true;
}
void UpdatePointer(Point pos)
{
if (data != null && data.AllSeries.Count > 0 && scale != null && scale.ScaleX > 0)
{
if (selectedSeries == null)
{
selectedSeries = data.AllSeries[data.AllSeries.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 = Brushes.Black;
tooltip.BorderThickness = new Thickness(1);
tooltip.Background = Brushes.White;
label = new TextBlock();
label.Foreground = Brushes.Black;
tooltip.Child = label;
this.Children.Add(tooltip);
}
ChartSeries series = selectedSeries;
var values = series.Values;
int i = (int)(pos.X / scale.ScaleX);
if (i >= 0 && i < values.Count)
{
ChartValue v = values[i];
Selected = v;
label.Text = v.Label;
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 - label.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
}
}
