NAME

RectComp, RectView, PSRect − rectangle component subject, view, and PostScript external representation

SYNOPSIS

#include <Unidraw/Components/rect.h>

DESCRIPTION

RectComp is a GraphicComp that defines a rectangle.  It uses an SF_Rect graphic to store its graphical attributes.  RectView is a GraphicView for displaying the rectangle.  PSRect is a PostScriptView that externalizes the subject’s information in PostScript form. 

RECTCOMP PUBLIC OPERATIONS

RectComp(SF_Rect∗ = nil)
The constructor takes an optional stroked-filled rectangle that defines the attributes of the rectangle.

SF_Rect∗ GetRect()
Return the SF_Rect graphic that defines the rectangle’s attributes. GetRect is simply a more specific form of the GetGraphic operation.

RECTVIEW PUBLIC OPERATIONS

RectView(RectComp∗ = nil)
Create an RectView, optionally supplying the subject.

virtual void Interpret(Command∗)
RectView interprets AlignToGridCmd to align its lower-left to the grid.

virtual Manipulator∗ CreateManipulator(

   Viewer∗, Event&, Transformer∗, Tool∗

)

virtual void InterpretManipulator(Manipulator∗)
RectView redefines its response to manipulation with a GraphicCompTool. GraphicCompTool will let the user sweep out a rectangle that reflects the RectComp’s size.  Creation will be influenced by gravity, if any. RectView also defines a response to the ReshapeTool, allowing the user to click on one of its corners to reposition it.  The subject is actually replaced (via ReplaceCmd) with a PolygonComp subject reflecting the repositioned corner.  Repositioning will be influenced by gravity.

virtual void GetCorners(Coord∗, Coord∗)
GetCorners takes two arrays of four Coord values and stores into them the coordinates of its corners, in canvas coordinates.

RectComp∗ GetRectComp()
Return the subject.

RECTVIEW PROTECTED OPERATIONS

virtual void CreateHandles()
RectView redefines CreateHandles to use a RubberHandles object with four handles, one at each corner of the rectangle.

PSRECT PUBLIC OPERATIONS

PSRect(RectComp∗ = nil)
Construct a PostScript external representation of the given subject, if any.

SEE ALSO

GraphicComp(3U), GraphicCompTool(3U), GraphicView(3U), Grid(3U), PolygonComp(3U), PostScriptView(3U), ReshapeTool(3U), align(3U), edit(3U), polygons(3U)

Unidraw  —  Last change: 22 January 1991