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TRSGPArc Class

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TRSGPArc defines 2D arcs. TRSGPArc is drawn as part of TRSGPEllipse's contour.

The TRSGPArc object is the part of the TRSGPEllipse's contour enclosed between radiuses with the StartAngle and RSGdiPlusCtrls.TRSGPArc.EndAngle angles.

To define the general size, shape, and position of TArc, use the ShapeRect bounding rectangle, the scaling factors specified by Scale, the RotationCenter rotation axis, and the RotationAngle rotation angle of the TEllipse object.

TArc draws the contour and fills the shape background with the Paint method. The Paint method draws the TArc contour using the drawing pen having the Stroke, StrokeThickness, StrokeCap, StrokeDash, and StrokeJoin properties of the TArc object.

Namespace: RSGdiPlusCtrls

Name

Description

AbsoluteMatrix

Specifies the absolute transformation matrix of the control. AbsoluteMatrix is calculated using Matrix and AbsoluteMatrix of its parent
(Inherited from RSGdiPlusCtrls.TRSGPShape.)

Align

Represents property Align. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Anchors

Represents property Anchors. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Canvas

Represents property Canvas. (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)

ClipChildren

Represents property ClipChildren. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Constraints

Represents property Constraints. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Cursor

Represents property Cursor. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

DragCursor

Represents property DragCursor. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

DragKind

Represents property DragKind. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

DragMode

Represents property DragMode. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

EndAngle

Specifies the end angle for this arc object. The EndAngle end angle is measured clockwise from the StartAngle start angle.

Use EndAngle in conjunction with StartAngle to specify how to draw this arc.

Note
Notice that RotationAngle rotates the x-axis.

Fill

Represents property Fill. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

InterceptMouse

Determines whether mouse clicks should be detected for the control (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)

Matrix

Specifies the local transformation matrix of the control (Inherited from RSGdiPlusCtrls.TRSGPShape.)

OnClick

Represents property OnClick. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnContextPopup

Represents property OnContextPopup. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnDblClick

Represents property OnDblClick. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnDragDrop

Represents property OnDragDrop. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnDragOver

Represents property OnDragOver. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnEndDock

Represents property OnEndDock. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnEndDrag

Represents property OnEndDrag. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnGesture

Represents property OnGesture. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseActivate

Represents property OnMouseActivate. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseDown

Represents property OnMouseDown. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseEnter

Represents property OnMouseEnter. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseLeave

Represents property OnMouseLeave. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseMove

Represents property OnMouseMove. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnMouseUp

Represents property OnMouseUp. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnPaint

Represents property OnPaint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnPainting

Represents property OnPainting. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnStartDock

Represents property OnStartDock. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

OnStartDrag

Represents property OnStartDrag. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Opacity

Represents property Opacity. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

ParentShowHint

Represents property ParentShowHint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

PopupMenu

Represents property PopupMenu. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

ShapeRect

Returns the rectangle for drawing the shape.

The coordinates of the upper-left corner of the rectangle are (0,0), and the coordinates of the lower-right corner are (Width, Height).
(Inherited from RSGdiPlusCtrls.TRSGPShape.)

ShowHint

Represents property ShowHint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

StartAngle

Specifies the start angle for this arc object. The StartAngle start angle is measured clockwise from the x-axis.

Use StartAngle in conjunction with RSGdiPlusCtrls.TRSGPArc.EndAngle to specify how to draw this arc.

Note
Notice that RotationAngle rotates the x-axis.

Stroke

Represents property Stroke. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Touch

Represents property Touch. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Transform

Represents property Transform. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

Visible

Represents property Visible. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

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	Name	Description
	CreateGdiPCanvas	Creates a GDI+ canvas for the control. The calling routine is responsible for freeing the GDI+ canvas (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	DoPaint	Override this method to paint the control (Overrides RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.DoPaint.)
	DoPainted	Occurs just after painting. Calls the OnPaint event (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	DoPainting	Occurs just before painting. Calls the OnPainting event (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	GetAbsoluteMatrix	Returns the absolute transformation matrix of the control. AbsoluteMatrix is calculated using Matrix and AbsoluteMatrix of its parent (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetMatrix	Returns the local transformation matrix of the control (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetOpacity	Returns the control opacity. (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetShapeRectForRot(TObject,TRSRect)	Represents method GetShapeRectForRot(TObject,TRSRect). (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	ObjectChanged(TObject)	Represents method ObjectChanged(TObject). (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	Paint(TRSGPCanvas,TRSGPMatrix,Single)	Represents method Paint(TRSGPCanvas,TRSGPMatrix,Single). (Overrides RSGdiPlusCtrls.TRSGPEllipse.Paint(TRSGPCanvas,TRSGPMatrix,Single).)
	PointInObject(Integer,Integer)	Overloaded. Checks whether the point, specified by the absolute coordinates, belongs to the control area. PointInObject returns True if the specified point belongs to the control area, and False otherwise. The X and Y are the absolute coordinates (relative to the main form) of the point to be checked. The points of the control boundary specified by BoundsRect belong to the control and PointInObject returns True for them.
	PointInObject(Single,Single)	Checks whether the point, specified by the absolute coordinates, belongs to the control area. PointInObject returns True if the specified point belongs to the control area, and False otherwise. The X and Y are the absolute coordinates (relative to the main form) of the point to be checked. The points of the control boundary specified by BoundsRect belong to the control and PointInObject returns True for them.
	SetOpacity(Single)	Sets the control opacity. Set Opacity to customize the transparency of the current control. Opacity takes values between 0 and 1. If Opacity is 1, the control is completely opaque; if it is 0, the control is completely transparent. The values over 1 are treated as 1, and the ones under 0 are treated as 0. Opacity applies to the control's children.

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TRSGPArc Class

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