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Navigation: Code Documentation > RSVML > RSGdiPlusCtrls > Classes

TRSGPRectangle Class

TRSGPRectangle defines 2D rectangles with customized corners.

The CornerType , XRadius, and YRadius properties define how to customize shapes of rectangle corners. Corners specifies which corners to be customized. Notice that, if Corners is an empty set or any of the XRadius or YRadius properties is zero, then no corner shape customization is used.

The rectangle size and position are defined by the following properties of the TRSGPRectangle object:

• The shape rectangle ShapeRect defines the initial size and position of the rectangle.

• You can use the rotation axis RotationCenter and rotation angle RotationAngle of the TRectangle object to rotate and move the rectangle.

• You can use the scaling factors of the TRectangle object to proportionally scale rectangle coordinates along local coordinate axes. Scaling moves the rectangle and changes its size.
Note: Scaling not only scales the shape of an object proportionally to the scaling factors, but also changes the Stroke.Thickness of the contour proportionally to the scaling factor for each axis.

Namespace: RSGdiPlusCtrls

Name

Description

public property

AbsoluteMatrix

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

published property

Align

Represents property Align.

published property

Anchors

Represents property Anchors.

public property

Canvas

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

published property

ClipChildren

Represents property ClipChildren.

published property

Constraints

Represents property Constraints.

published property

Corners

Specifies shapes of which corners in the TRSGPRectangle rectangle object are customized according to the CornerType, XRadius, and YRadius properties.

By default, all four corners are customized.

Corners can contain a set of constants defined in the TRSCorner type: crTopLeft, crTopRight, crBottomLeft, and crBottomRight. Use the AllCorners constant to select all corners.

If Corners is an empty set or any of the XRadius and YRadius properties is zero, then no corner shape customization is used.

published property

CornerType

Specifies the type of the corner shape's customization in the rectangle. Values of CornerType are defined in TRSGPCornerType.

CornerType applies to corners specified in the Corners set. XRadius and YRadius specify the distance from a corner to the start point of the corner shape customization, on the horizontal and vertical sides.

Note
If Corners is an empty set or any of the XRadius and YRadius properties is zero, then no corner shape customization is used

published property

Cursor

Represents property Cursor.

published property

DragCursor

Represents property DragCursor.

published property

DragKind

Represents property DragKind.

published property

DragMode

Represents property DragMode.

published property

Fill

Represents property Fill.

public property

InterceptMouse

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

public property

Matrix

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

published property

OnClick

Represents property OnClick.

published property

OnContextPopup

Represents property OnContextPopup.

published property

OnDblClick

Represents property OnDblClick.

published property

OnDragDrop

Represents property OnDragDrop.

published property

OnDragOver

Represents property OnDragOver.

published property

OnEndDock

Represents property OnEndDock.

published property

OnEndDrag

Represents property OnEndDrag.

published property

OnGesture

Represents property OnGesture.

published property

OnMouseActivate

Represents property OnMouseActivate.

published property

OnMouseDown

Represents property OnMouseDown.

published property

OnMouseEnter

Represents property OnMouseEnter.

published property

OnMouseLeave

Represents property OnMouseLeave.

published property

OnMouseMove

Represents property OnMouseMove.

published property

OnMouseUp

Represents property OnMouseUp.

published property

OnPaint

Represents property OnPaint.

published property

OnPainting

Represents property OnPainting.

published property

OnStartDock

Represents property OnStartDock.

published property

OnStartDrag

Represents property OnStartDrag.

published property

Opacity

Represents property Opacity.

published property

ParentShowHint

Represents property ParentShowHint.

published property

PopupMenu

Represents property PopupMenu.

public property

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.)

published property

ShowHint

Represents property ShowHint.

published property

Sides

Specifies which sides of the TRSGPRectangle rectangle to display.

A side is a rectangle boundary between two adjacent corners or end points of corner customizations. End points of corner customizations are defined by XRadius and YRadius. A corner customization applies to corners included into the Corners set.

By default, all sides of the rectangle are displayed.

Sides can contain a set of constants defined in TRSSide: sdTop, sdLeft, sdBottom, and sdRight. Use the AllSides constant to select all sides.

If Sides is empty, then no side is displayed.

published property

Stroke

Represents property Stroke.

published property

Touch

Represents property Touch.

published property

Transform

Represents property Transform.

published property

Visible

Represents property Visible.

published property

XRadius

Specifies the distance from a corner to the start point of the corner shape customization, on the horizontal sides of TRSGPRectangle.

During design time, the maximum possible value of XRadius is limited by the half of the smallest side.

If XRadius=0, then no corner shape customization is used.

published property

YRadius

Specifies the distance from a corner to the start point of the corner shape customization, on the vertical sides of TRSGPRectangle.

During design time, the maximum possible value of YRadius is limited by the half of the smallest side.

If YRadius=0, then no corner shape customization is used.

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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.TRSGPShape.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)	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.
	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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