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TRSChartLegendBox Class

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Provides a stand-alone legend paintbox-like component for a FMX.RS.ChartPanel.TRSChartPanel or FMX.RS.ChartPanel.TRSCustomChart. This legend may be placed anywhere a normal control can be placed in your form.

Use the Panel property to select the TRSChartPanel to display charts or chart values from. The Chart property can be used to select the specific chart to display its values. The Legend property controls what is displayed in the legend.

The TRSLegendListBox component implements the FMX.RS.ChartPanel.IChartPanelListener interface

Namespace: FMX.RS.ChartLegends

TPaintBox
FMX.RS.ChartLegends.TRSChartLegendBox

Delphi

type
TRSChartLegendBox = class(TPaintBox, IChartPanelListener)
end;

	Name	Description
	Create(TComponent)	Initializes a new instance of the TRSChartLegendBox class.
	Destroy	Represents the destructor of the TRSChartLegendBox class.

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	Name	Description
	Chart	Specifies the chart that the legend should display values from. Note that this property will be set automatically to the active chart of a chart panel if the Panel property is set.
	Legend	Defines the properties of the legend to display
	NeedsUpdate	Represents property NeedsUpdate.
	Panel	Specifies the TRSChartPanel that the legend should display charts and/or values for. Set the Panel property if you want the legend to display a legend similar to the Legend of the TRSChartPanel. In this case, the legend will display all the chart names if there is more than one chart attached to the panel. However, if there is only one chart attached to the panel, the legend would display the chart's values. To only display one chart's values, leave the Panel property blank and set the Chart property.

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	Name	Description
	ChartAdded(TRSCustomChart)	Called when chart is added to panel
	ChartChanged(TRSCustomChart)	Called when a chart or a chart value has changed
	ChartDeleted(TRSCustomChart)	Called when chart is deleted/removed from panel
	GetLegendStrings(TObject,TStrings)	Represents method GetLegendStrings(TObject,TStrings).
	Invalidate	Represents method Invalidate.
	LegendChanged(TObject)	Represents method LegendChanged(TObject).
	Notification(TComponent,TOperation)	Represents method Notification(TComponent,TOperation).
	Paint	Represents method Paint.
	PanelChange	Called when the panel has changed and everything needs to be refreshed
	SelectionChanged(TObject)	Called when FMX.RS.ChartPanel.TRSChartValue.Selected property has changed
	ValueChanged(TRSCustomChart,TRSChartValue)	Called when a chart value has changed. The Value = nil when ALL values have been changed
	VisibleChanged(TObject)	Called when FMX.RS.ChartPanel.TRSCustomChart.Visible property or the TRSChartValue.Visible property has changed

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More than one TRSChartLegendBox may be used at a time.

To display a list of all the charts of a chart panel:

•	Drop a FMX.RS.ChartPanel.TRSChartPanel and charts on a form

•	Drop a FMX.RS.ChartLegends.TRSChartLegendBox component on a form

•	Set the Panel property of the TRSChartLegendBox to the TRSChartPanel

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Change the LegendStyle to lsChartNames. If you leave the LegendStyle as lsAutomatic, the legend will display all the chart names if there is more than one chart attached to the panel. However, if there is only one chart attached to the panel, the legend would display the chart's values. Use lsChartNames to force the legend to always display only the charts attached to the chart panel.

To display one chart's values:

•	Drop a chart on a form. Note that the chart does not have to be visible or attached to a chart panel to display the values of the chart in the legend.

•	Drop a FMX.RS.ChartLegends.TRSChartLegendBox component on a form

•	Set the Chart property of the TRSChartLegendBox to the chart

Reference

•	FMX.RS.ChartPanel.IChartPanelListener

•	FMX.RS.ChartLegends.TRSLegendListBox

•	FMX.RS.ChartPanel.TRSChartLegend

•	FMX.RS.ChartPanel.TRSChartPanel

•	FMX.RS.ChartPanel.TRSCustomChart

•	FMX.RS.ChartLegends

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