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)