/// <summary>
/// Updates the value margins after all data points are updated.
/// </summary>
protected override void OnAfterUpdateDataPoints()
{
IValueMarginProvider provider = this;
{
var consumer = ActualDependentRangeAxis as IValueMarginConsumer;
if (consumer != null)
{
consumer.ValueMarginsChanged(provider, GetValueMargins(consumer));
}
}
{
var consumer = ActualIndependentAxis as IValueMarginConsumer;
if (consumer != null)
{
consumer.ValueMarginsChanged(provider, GetValueMargins(consumer));
}
}
base.OnAfterUpdateDataPoints();
}
/// <summary>
/// Updates the layout of the axis to accommodate a sequence of value
/// margins.
/// </summary>
/// <param name="provider">A value margin provider.</param>
/// <param name="valueMargins">A sequence of value margins.</param>
void IValueMarginConsumer.ValueMarginsChanged(IValueMarginProvider provider, IEnumerable <ValueMargin> valueMargins)
{
Action action = () =>
{
if (this.Orientation != AxisOrientation.None)
{
// Determine if any of the value margins are outside the axis
// area. If so update range.
bool updateRange =
valueMargins
.Select(
valueMargin =>
{
double coordinate = GetPlotAreaCoordinate(valueMargin.Value).Value;
return(new Range <double>(coordinate - valueMargin.LowMargin, coordinate + valueMargin.HighMargin));
})
.Where(range => range.Minimum <0 || range.Maximum> this.ActualLength)
.Any();
if (updateRange)
{
UpdateActualRange();
}
}
};
// Repeat this after layout pass.
if (this.ActualLength == 0)
{
#pragma warning disable 4014
this.Dispatcher.RunAsync(CoreDispatcherPriority.High, new DispatchedHandler(action));
#pragma warning restore 4014
}
else
{
action();
}
}
/// <summary>
/// Updates the layout of the axis to accommodate a sequence of value
/// margins.
/// </summary>
/// <param name="provider">A value margin provider.</param>
/// <param name="valueMargins">A sequence of value margins.</param>
void IValueMarginConsumer.ValueMarginsChanged(IValueMarginProvider provider, IEnumerable<ValueMargin> valueMargins)
{
Action action = () =>
{
if (this.Orientation != AxisOrientation.None)
{
// Determine if any of the value margins are outside the axis
// area. If so update range.
bool updateRange =
valueMargins
.Select(
valueMargin =>
{
double coordinate = GetPlotAreaCoordinate(valueMargin.Value).Value;
return new Range<double>(coordinate - valueMargin.LowMargin, coordinate + valueMargin.HighMargin);
})
.Where(range => range.Minimum < 0 || range.Maximum > this.ActualLength)
.Any();
if (updateRange)
{
UpdateActualRange();
}
}
};
// Repeat this after layout pass.
if (this.ActualLength == 0)
{
this.Dispatcher.BeginInvoke(action);
}
else
{
action();
}
}
