/// <inheritdoc/>
protected override UIElement OnGetLegendSymbol()
{
if (DataPointTemplate != null)
{
var grid = new Grid
{
MinWidth = 16,
MinHeight = 16,
};
var legendSymbol = CreateDataPoint(null) ?? new Rectangle();
legendSymbol.Width = 16;
legendSymbol.Height = 10;
legendSymbol.HorizontalAlignment = HorizontalAlignment.Center;
legendSymbol.VerticalAlignment = VerticalAlignment.Center;
legendSymbol.SetBinding(StyleProperty, new Binding("DataPointStyle") { Source = this });
legendSymbol.IsHitTestVisible = false;
Brush fillBrush = null;
Brush strokeBrush = null;
Palette fillPalette = EffectiveFillPalette;
if (fillPalette != null && fillPalette.Count > 0)
{
double start = fillPalette[0].Value;
double end = fillPalette[fillPalette.Count - 1].Value;
fillBrush = new LinearGradientBrush
{
GradientStops = fillPalette.GetGradient(start, end),
StartPoint = new Point(0, 0.5),
EndPoint = new Point(1, 0.5),
ColorInterpolationMode = fillPalette.ColorInterpolationMode
};
}
Palette strokePalette = EffectiveStrokePalette;
if (strokePalette != null && strokePalette.Count > 0)
{
double start = strokePalette[0].Value;
double end = strokePalette[strokePalette.Count - 1].Value;
strokeBrush = new LinearGradientBrush
{
GradientStops = strokePalette.GetGradient(start, end),
StartPoint = new Point(0, 0.5),
EndPoint = new Point(1, 0.5),
ColorInterpolationMode = strokePalette.ColorInterpolationMode
};
}
ChartHelper.SetStrokeAndFill(legendSymbol, strokeBrush, fillBrush);
grid.Children.Add(legendSymbol);
return grid;
}
return base.OnGetLegendSymbol();
}
/// <inheritdoc/>
protected override UIElement OnGetLegendSymbol()
{
if (DataPointTemplate != null)
{
var grid = new Grid
{
MinWidth = 16,
MinHeight = 16,
};
var legendSymbol = CreateDataPoint(null) ?? new Rectangle();
if (EffectiveOrientation == Orientation.Vertical)
{
legendSymbol.Width = 10;
legendSymbol.Height = 14;
legendSymbol.HorizontalAlignment = HorizontalAlignment.Center;
legendSymbol.VerticalAlignment = VerticalAlignment.Bottom;
}
else
{
legendSymbol.Width = 14;
legendSymbol.Height = 10;
legendSymbol.HorizontalAlignment = HorizontalAlignment.Left;
legendSymbol.VerticalAlignment = VerticalAlignment.Center;
}
legendSymbol.SetBinding(StyleProperty, new Binding("DataPointStyle") { Source = this });
legendSymbol.IsHitTestVisible = false;
double paletteIndex = 1;
if (FillPalette != null && FillPalette.Count > 0)
paletteIndex = FillPalette[FillPalette.Count - 1].Value;
else if (StrokePalette != null && StrokePalette.Count > 0)
paletteIndex = StrokePalette[StrokePalette.Count - 1].Value;
Brush fillBrush;
Brush strokeBrush;
GetBrushes(paletteIndex, out strokeBrush, out fillBrush);
ChartHelper.SetStrokeAndFill(legendSymbol, strokeBrush, fillBrush);
grid.Children.Add(legendSymbol);
return grid;
}
return base.OnGetLegendSymbol();
}
protected override void OnPrepareBar(int index, DataPoint data, FrameworkElement bar)
{
double paletteIndex;
switch (PaletteIndex)
{
case PaletteIndex.Index:
paletteIndex = index;
break;
case PaletteIndex.XValue:
paletteIndex = data.X;
break;
case PaletteIndex.YValue:
paletteIndex = data.Y;
break;
default:
throw new NotSupportedException("PaletteIndex type is not supported.");
}
Brush fillBrush;
Brush strokeBrush;
GetBrushes(paletteIndex, out strokeBrush, out fillBrush);
ChartHelper.SetStrokeAndFill(bar, strokeBrush, fillBrush);
}