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Extends the TRSChartGraphic class to encapsulate properties about grid tick marks, including pen length and    MinorTickCount. The TRSAxisGrid class implements these properties for the FMX.RS.ChartPanel.TRSChartAxis class as its Grid property.

AxisGridOptionsExample

Namespace: FMX.RS.ChartPanel

expandingInheritance Hierarchy

TInterfacedPersistent
  FMX.RS.ChartPanel.TRSChartGraphic
    FMX.RS.ChartPanel.TRSAxisGrid
 
expandingSyntax

Delphi

type
  TRSAxisGrid = class(TRSChartGraphic)
  end; 
 
expandingConstructors

 

Name

Description

public constructor

Create(TRSChartAxis)

Initializes a new instance of the TRSAxisGrid class.

public destructor

Destroy

Represents the destructor of the TRSAxisGrid class. (Overrides FMX.RS.ChartPanel.TRSChartGraphic.Destroy.)

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expandingProperties

 

Name

Description

public property

Axis

Represents property Axis.

protected property

AxisLine

Represents property AxisLine.

published property

DrawOptions

Defines the set of grid marks that the axis grid should draw. Each grid mark type is drawn with its own pen:     GridPen for the major grid,     MinorGridPen for the minor grid, and     TicksPen for the tick marks.

AxisGridOptionsExample
 

published property

GridPen

Specifies the kind of pen that should be used to draw the major grid lines. Set Pen to specify the pen to use for drawing major grid lines in the chart. The value of Pen is a TRSPen object, which is TPen in VCL and TStrokeBrush in FMX. Set the properties of the TRSPen object to specify the color, style, width, and mode of the pen.

The major grid is only drawn if it is specified in the     DrawOptions property.
 

published property

InnerLength

Specifies the length of the tick mark on the inside of the chart area.

The TickLength property, along with the     InnerLength property, specify the length of tick marks in pixels that are drawn at the major grid interval. The TickLength property specifies the portion of the tick mark on the outside of the grid. If either the TickLength property or the InnerLength property is greater than 0, and doDrawTickMarks is in     DrawOptions, then a tick mark on the major grid interval is drawn.
 

protected property

MajorGridInterval

Represents property MajorGridInterval.

protected property

MajorGridStart

Represents property MajorGridStart.

published property

MinorGridPen

Specifies the kind of pen that should be used to draw the minor grid lines. Set Pen to specify the pen to use for drawing minro grid lines in the chart. The value of Pen is a TRSPen object, which is TPen in VCL and TStrokeBrush in FMX. Set the properties of the TPen object to specify the color, style, width, and mode of the pen.

The minor grid is only drawn if it is specified in the     DrawOptions property.

published property

MinorTickCount

Specifies the number of minor grid marks and minor tick marks between every major grid mark.

published property

MinorTickLength

Specifies the length of tick marks that are drawn at the minor grid interval (see     MinorTickCount).

If both the MinorTickLength property and the MinorTickCount property are greater than 0, and doDrawTickMarks is in DrawOptions, then a tick mark on the minor grid interval is drawn with the specified MinorTickLength.
 

public property

OnChange

Occurs immediately after the chart graphic object changes. Write an OnChange event handler to take specific action when the chart graphic changes. The properties of the chart graphic reflect the new settings when OnChange occurs.

alert_cautionWarning

For chart graphics that a chart or chart panel creates, you shouldn't assign a handler to this event. The chart or chart panel has already assigned an event handler.

published property

Opacity

Represents property Opacity.

published property

Origin

Specifies the Origin for the axis so that a line perpendicular to the axis can be draw

published property

OriginPen

Specifies the kind of pen that should be used to draw the origin line. Set Pen to specify the pen to use for drawing tick marks in the chart. The value of Pen is a TRSPen object, which is TPen in VCL and TStrokeBrush in FMX. Set the properties of the TPen object to specify the color, style, width, and mode of the pen.

The origin line is only drawn if it is specified in the     DrawOptions property.
 

published property

TickLength

Specifies the portion of the tick mark on the outside of the grid.

The TickLength property, along with the     InnerLength property, specify the length of tick marks in pixels that are drawn at the major grid interval. The InnerLength property specifies the length of the tick mark on the inside of the chart area. If either the TickLength property or the InnerLength property is greater than 0 and doDrawTickMarks is in     DrawOptions, then a tick mark on the major grid interval is drawn.
 

published property

TicksPen

Specifies the kind of pen that should be used to draw the tick marks. Set Pen to specify the pen to use for drawing tick marks in the chart. The value of Pen is a TRSPen object, which is TPen in VCL and TStrokeBrush in FMX. Set the properties of the TPen object to specify the color, style, width, and mode of the pen.

The tick marks are only drawn if they are specified in the     DrawOptions property.
 

published property

Visible

Represents property Visible.

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expandingMethods

 

Name

Description

public method

Assign(TPersistent)

Copies the contents of another similar object to the current object

alert_noteNotes to Inheritors

Most objects override Assign to handle the assignment of properties from similar objects. When overriding Assign, call the inherited method if the destination object cannot handle the assignment of properties from the class of the Source parameter

protected method

Changed

Overloaded. Represents method Changed. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

public method

Clone

Creates a "deep" copy of the chart graphic. It constructs a new chart graphic of the correct type and then calls the   Assign method to copy its properties to the new copy. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

public method

Draw(TCanvas,TCanvasRect)

Overloaded. Paints the chart graphic to the specified Canvas in the specified location. It uses the current canvas' brush and pen. Use the Draw method to paint the chart graphic to any canvas and anywhere and with any size on the canvas.

alert_noteNotes to Inheritors

Descendant classes of TRSChartGraphic override the InternalDraw method to actually paint themselves.

public method

Draw(TCanvas,TCanvasRect,TRSChartAxis,TRSChartAxis)

Overloaded.  Paints the chart graphic to the specified Canvas in the specified location. It uses the current canvas' brush and pen. Use the Draw method to paint the chart graphic to any canvas and anywhere and with any size on the canvas.

The VertAxis and HorizAxis parameters can be used to provide point to pixel conversions (see FMX.RS.ChartPanel.TRSChartAxis ).

alert_noteNotes to Inheritors

Descendant classes of TRSChartGraphic override the InternalDraw method to actually paint themselves.

protected method

Drawing(TCanvas,TCanvasRect)

Represents method Drawing(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

protected method

Drawn(TCanvas,TCanvasRect)

Represents method Drawn(TCanvas,TCanvasRect). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

protected method

DrawSegment(TCanvas,TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType,TRSChartValueType,TRSPoint,TCanvasPoint,Boolean,Boolean,TCanvasRect,TCanvasRect,Double,Double)

Represents method DrawSegment(TCanvas,TCanvasRect,TRSChartValueType,TRSChartValueType,TRSChartValueType,TRSChartValueType,TRSPoint,TCanvasPoint,Boolean,Boolean,TCanvasRect,TCanvasRect,Double,Double).

protected method

FreeNotification(TObject)

Represents method FreeNotification(TObject). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

protected method

Initialize

Represents method Initialize. (Overrides FMX.RS.ChartPanel.TRSChartGraphic.Initialize.)

protected method

InitializeEvents

Represents method InitializeEvents. (Overrides FMX.RS.ChartPanel.TRSChartGraphic.InitializeEvents.)

protected method

InternalDraw(TCanvas,TCanvasRect)

Represents method InternalDraw(TCanvas,TCanvasRect). (Overrides FMX.RS.ChartPanel.TRSChartGraphic.InternalDraw(TCanvas,TCanvasRect).)

public method

IsOriginVisible

Represents method IsOriginVisible.

protected method

SenderChanged(TObject)

Overloaded. Represents method SenderChanged(TObject). (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

protected method

ShouldDrawMajorTicks

Represents method ShouldDrawMajorTicks.

protected method

ShouldDrawMinorTicks

Represents method ShouldDrawMinorTicks.

public method

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasPixel,TCanvasPixel)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at full size from the top left of the ARect across and down until outside of the input rectangle. Use the overloaded TiledDraw methods to constrain the size of the Image.

public method

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasPixel,TCanvasPixel,TCanvasPixel,TCanvasPixel)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at ImageWidth, ImageHeight size from the top left of the ARect across and down until outside of the input rectangle.

public method

TiledDraw(TCanvas,TCanvasRect,TTileGraphic,TCanvasRect)

Overloaded.  Tiles the image across the entire input rectangle.

The Image is drawn at ImageRect size from the top left of the ARect across and down until outside of the input rectangle.

protected method

VisibleChanged

Represents method VisibleChanged. (Overrides FMX.RS.ChartPanel.TRSChartGraphic.VisibleChanged.)

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expandingEvents

 

Name

Description

public event

OnDraw

Occurs just after the chart graphic is painted. Write an OnDraw event handler to take specific action when the chart graphic has finished painting. The OnDraw event also allows you to do custom painting after the chart graphic has painted. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

public event

OnDrawing

Occurs just before the chart graphic is painted. Write an OnDrawing event handler to take specific action when the chart graphic is about to paint. If the event handler sets the DoDraw parameter to False, the chart graphic will not be painted. The OnDraw event also allows you to do custom painting before the chart graphic has been painted. (Inherited from FMX.RS.ChartPanel.TRSChartGraphic.)

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expandingSee Also

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