void INoDesiredSizeControl.InvalidateUI()
{
if (!this.arrangePassed || !this.IsTemplateApplied)
{
return;
}
this.availableSize = new Size(0, 0);
this.lastLayoutContext = ChartLayoutContext.Invalid;
// reset the layout context of each presenter
foreach (UIElement child in this.renderSurface.Children)
{
PresenterBase presenter = child as PresenterBase;
if (presenter != null)
{
presenter.lastLayoutContext = ChartLayoutContext.Invalid;
}
}
this.InvalidateArrange();
if (this.invalidateScheduled)
{
this.skipInvalidated = true;
}
}
/// <summary>
/// Updates of all of the chart elements presented by this instance.
/// </summary>
internal override void UpdateUICore(ChartLayoutContext context)
{
base.UpdateUICore(context);
// update the UI of each presenter
foreach (UIElement child in this.renderSurface.Children)
{
PresenterBase presenter = child as PresenterBase;
if (presenter != null)
{
presenter.UpdateUI(context);
}
}
// position the plot area decoraction
RadRect plotAreaSlot = this.PlotAreaDecorationSlot;
Canvas.SetLeft(this.plotAreaBackground, plotAreaSlot.X);
Canvas.SetTop(this.plotAreaBackground, plotAreaSlot.Y);
this.plotAreaBackground.Width = plotAreaSlot.Width;
this.plotAreaBackground.Height = plotAreaSlot.Height;
this.adornerLayer.IsHitTestVisible = !context.IsEmpty;
this.labelLayer.Opacity = context.IsEmpty ? 0 : 1;
this.StackedSeriesContext.Clear();
}
/// <summary>
/// Indicates whether the visual can be drawn using the Composition API.
/// </summary>
/// <param name="visualElement">The visual element that needs to be drawn.</param>
/// <returns>Return true if the visual element does not have set Styles and Templates - returns false if it has.</returns>
protected internal virtual bool CanDrawContainerVisual(PresenterBase visualElement)
{
if (Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
return(false);
}
var axis = visualElement as Axis;
if (axis != null)
{
if (axis is CartesianAxis)
{
return(axis.ReadLocalValue(Axis.LineStyleProperty) == DependencyProperty.UnsetValue &&
axis.ReadLocalValue(Axis.MajorTickTemplateProperty) == DependencyProperty.UnsetValue &&
axis.ReadLocalValue(Axis.MajorTickStyleProperty) == DependencyProperty.UnsetValue);
}
return(false);
}
var pointTemplateSeries = visualElement as PointTemplateSeries;
if (pointTemplateSeries != null)
{
if (pointTemplateSeries is AreaSeries || pointTemplateSeries is PointSeries || pointTemplateSeries is SplineSeries ||
pointTemplateSeries is ScatterSplineSeries || pointTemplateSeries is PolarSeries || (pointTemplateSeries.GetType() == typeof(ScatterPointSeries)))
{
return(false);
}
return(pointTemplateSeries.ReadLocalValue(PointTemplateSeries.DefaultVisualStyleProperty) == DependencyProperty.UnsetValue &&
pointTemplateSeries.ReadLocalValue(PointTemplateSeries.PointTemplateProperty) == DependencyProperty.UnsetValue &&
pointTemplateSeries.ReadLocalValue(PointTemplateSeries.PointTemplateSelectorProperty) == DependencyProperty.UnsetValue);
}
var cartesianChartGrid = visualElement as CartesianChartGrid;
if (cartesianChartGrid != null)
{
return(cartesianChartGrid.ReadLocalValue(CartesianChartGrid.MajorXLineStyleProperty) == DependencyProperty.UnsetValue &&
cartesianChartGrid.ReadLocalValue(CartesianChartGrid.MajorYLineStyleProperty) == DependencyProperty.UnsetValue);
}
var macdhIndicator = visualElement as MacdhIndicator;
if (macdhIndicator != null)
{
return(macdhIndicator.ReadLocalValue(MacdhIndicator.PointTemplateProperty) == DependencyProperty.UnsetValue &&
macdhIndicator.ReadLocalValue(MacdhIndicator.PointTemplateSelectorProperty) == DependencyProperty.UnsetValue &&
macdhIndicator.ReadLocalValue(BarIndicatorBase.DefaultVisualStyleProperty) == DependencyProperty.UnsetValue);
}
return(true);
}
internal virtual RadSize MeasureLabel(FrameworkElement visual, ChartSeriesLabelUpdateContext context)
{
if (context.Definition.Strategy != null)
{
if ((context.Definition.Strategy.Options & LabelStrategyOptions.Measure) == LabelStrategyOptions.Measure)
{
return(context.Definition.Strategy.GetLabelDesiredSize(context.Point, visual, context.DefinitionIndex));
}
}
return(PresenterBase.MeasureVisual(visual));
}
internal virtual void ProcessPaletteChanged(bool force)
{
if (!this.IsTemplateApplied)
{
return;
}
// update the UI of each presenter
foreach (UIElement child in this.renderSurface.Children)
{
PresenterBase presenter = child as PresenterBase;
if (presenter != null)
{
presenter.UpdatePalette(force);
}
}
}