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Name
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Description
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Assign(TPersistent)
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Represents method Assign(TPersistent). (Overrides RSChartPanel.TRSCustomChart.Assign(TPersistent).)
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CreateChartValues
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Creates the RSChartPanel.TRSChartValues class for the Values property
 Notes to Inheritors
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Override this method to create your TRSChartValues descendant
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CreatePreviewValues
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Creates sample values for illustrating how the chart will look. This function is automatically called at design-time to fill the chart with sample values. It can also be called at run-time to add more values to the chart (i.e., the chart is not cleared first)
 Note
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Set the Preview property to false to have the design-time sample values show up at run-time
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DrawPieSlice(TCanvas,TCanvasRect,Double,Double,TRSPieChartValue,TPieSliceOptions)
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Draw One Pie Slice
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DrawSlices(TCanvas,TCanvasRect,TPieSliceOptions)
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Draw all the pie slices of the chart
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GetChartType
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Returns the chart type enumerated value for this class. Each chart class overrides this class function to return the RSChartConsts|TRSChartType enumerated value (Overrides RSChartPanel.TRSCustomChart.GetChartType.)
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GetRadius(TRSPieChartValue,Single,Single)
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Returns the InnerRadius and OuterRadius of the pie chart
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GetSlicePath(TCanvasRect,TRSPieChartValue)
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Returns the path data for drawing that pie chart value
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InitializeChart
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Creates and initialize structures and values of chart. This method is the safe place to initialize chart values without change events occurring.
Notes to Inheritors
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The constructor calls this method. Use this method to actually create and initialize properties. Do not assign event properties in this method (use the InitializeChangeEvents method instead)
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InternalDraw(TCanvas,TCanvasRect)
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Overloaded. Paints the chart graphic to the specified canvas at the specified rectangle. The InternalDraw method is called by the Draw method.
Descendant classes of TRSCustomChart override the InternalDraw method to actually paint themselves.
Notes to Inheritors
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The default InternalDraw method implementation assigns the Brush, Pen , and Font to the Canvas.
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InternalSelect(TCanvasRect,TRSChartSelectionAction)
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Selects or deselects chart Values ( RSChartPanel.TRSChartValue ) based on whether they intersect with the selection rectangle (which is in pixel coordinates).
The base method converts the SelectionRect to chart coordinates (based on HorizontalAxis and VerticalAxis) and then selects values based on the TRSChartValue.Selectable method
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IsSelectable(TCanvasRect)
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Returns True if any value in the chart intersects with the SelectionRect (Overrides RSChartPanel.TRSCustomChart.IsSelectable(TCanvasRect).)
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SetOptions(TChartOptions)
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Represents method SetOptions(TChartOptions). (Overrides RSChartPanel.TRSCustomChart.SetOptions(TChartOptions).)
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