Class SLScope.TSLDisplayYAxis

Latest revision as of 00:30, 26 June 2013

This is a Beta Read Only version of this page. Please review and send recommendations to mitov@mitov.com. We will enable the editing as soon as we are happy with the overall Wiki site.

Package: SignalLabScopePkg

Unit: SLScope

Inherits: TSLBasicDisplayYAxis

Syntax

Delphi:

type TSLDisplayYAxis = class( TSLBasicDisplayYAxis )

C++ Builder:

class TSLDisplayYAxis : public TSLBasicDisplayYAxis

Visual C++ (MFC):

class CTSLDisplayYAxis : public CTSLBasicDisplayYAxis

C# (.NET):

public ref class DisplayYAxis : Mitov.PlotLab.BasicDisplayYAxis

Summary

Visual X axis.

Description

This is a base class for data view for visual data Y axis in Scopes or Spectrum Analyzers. The Axes are created internally by the data displays. Do not make instances of this class or its descendants.

Example:

Properties

Published

• ScaleMode - Specifies the scale mode - logarithmic or linear.

From TSLBasicDisplayYAxis

Properties

Published

• Align

From TSLDisplayAxis

Properties

Published

• Format - Specifies the format of the axis labels.
• Color - Specifies the color for the axis ticks.
• Font - Specifies the font for the axis values.
• ToolBar - Specifies the behavior of the axis toolbar.
• Button - Specifies the appearance and the behavior of the Axis button.
• Min - Specifies the Minimal value shown on the axis if the AutoScale is not set to true.
• Max - Specifies the Maximal value shown on the axis if the AutoScale is not set to true.
• Zooming - Specifies the behavior of the axis zooming.
• AxisLabel - Specifies the appearance of the axis label.

Public

• CurrentMax - Current Max value in the axis.
• CurrentMin - Current Min value in the axis.
• AssociatedChannels - List of channels associated with the axis.
• Step - Current Ticks Step value of the axis.

Methods

Public

• procedure ZoomBy(AValue : Real) - Zooms by Value.
• procedure ZoomBy(AValue : Real; SaveHistory : Boolean) - Zooms by Value. Allows optionally the zoom history to be saved for Undo.
• procedure ZoomTo(AMin : Real; AMax : Real) - Zooms to show the range between YMin and YMax.
• procedure ZoomTo(AMin : Real; AMax : Real; SaveHistory : Boolean) - Zooms to show the range between YMin and YMax. Allows optionally the zoom history to be saved for Undo.
• procedure ZoomToData(AMin : Real; AMax : Real) - Zooms to show the range between YMin and YMax based on the data scaling.
• procedure ZoomToData(AMin : Real; AMax : Real; SaveHistory : Boolean) - Zooms to show the range between YMin and YMax based on the data scaling. Allows optionally the zoom history to be saved for Undo.
• procedure SetTickText(AValue : PChar) - Provides a new TickText value( Visual C++ (MFC/Win32) only ).
• function GetAxisLabelText() : String
• function GetValueAt(X : Integer; Y : Integer; var AxisPos : Real) : Boolean - Returns the axis value at X, Y position.
• function ScaleToPixel(AValue : Real) : Integer - Converts a scale value to pixel position.
• function PixelToScale(APosition : Integer) : Real - Converts a pixel position to scale value.
• procedure IntZoom(AValue : Real; Operation : TSLZoomOperation)
• procedure Draw(ADrawPart : TSLDisplayDrawPart; ACanvas : TLPCanvas; Vertical : Boolean; Printing : Boolean)
• procedure ButtonHitTest(X : Integer; Y : Integer; AForceInvalidate : Boolean)
• function GetOwner() : TPersistent

Pins

• ZoomPin - Axis zooming state pin.

Events

• OnCustomLabel - Occurs when a label is in about to be painted.

From TSLTrackingOptionalAxis

Properties

Published

• TrackCursor - Enables/Disables the track hair in the axis.
• TrackColor - Specifies the color of the track hair in the axis.
• MinorTicks - Specifies the visual appearance of minor ticks in the axis scale.
• MajorTicks - Specifies the visual appearance of major ticks in the axis scale.

Events

• OnCustomStep - Occurs when a step(distance) is needed for plotting the next tick of the axis grid.

From TSLOptionalView

Properties

Published

• Visible - Specifies whether or not the viw is visible.

Methods

Public

• function IsVisible() : Boolean
• function IsVisibleForced() : Boolean

From TSLCustomSizeDisplayView

Properties

Published

• ViewSize - Specifies the way the view size will be calculated.
• Align - Specifies the desired alignment for the view (Left, Right, Top, Bottom etc.)

From TSLCustomColorDisplayView

Properties

Published

• Background - Specifies the background settings.

From TSLDisplayView

Properties

Public

• Height - Use this property to get the Height of the view in pixels.
• Width - Use this property to get the Width of the view in pixels.
• Top - Use this property to get the Top position of the view in pixels.
• Left - Use this property to get the Left position of the view in pixels.
• DefaultRect

Methods

Public

• function IsVisible() : Boolean
• function IsVisibleForced() : Boolean
• function GetIntValueAt(X : Integer; Y : Integer) : Real
• function GetMinValue() : Real
• function GetMaxValue() : Real
• procedure Draw(ADrawPart : TSLDisplayDrawPart; ACanvas : TLPCanvas; Vertical : Boolean; Printing : Boolean)
• procedure DrawEx(ADrawPart : TSLDisplayDrawPart; ACanvas : TLPCanvas; Vertical : Boolean)
• procedure DrawMouseSelction(ACanvas : TLPCanvas)

From TSLDisplayComponent

Properties

Public

• DrawRect

Methods

Public

• function IsVisible() : Boolean
• function GetOwner() : TPersistent

From TLPPersistent

Methods

Public

• function QueryInterface(IID : TGUID; Obj : TObject) : HResult
• function GetOwner() : TPersistent
• procedure OwnerNameChanged(AOldName : String; ANewName : String)