NAME

       Unidraw_Intro - Unidraw library for graphical object editor development

SYNOPSIS

       #include <Unidraw/class.h>
       #include <Unidraw/Components/class.h>
       #include <Unidraw/Commands/class.h>
       #include <Unidraw/Tools/class.h>
       #include <Unidraw/Graphic/class.h>

       CC ... -lUnidraw ... -lInterViews -lX -lm

DESCRIPTION

       Unidraw  is  an  architecture for creating object-oriented graphical editors in domains such as technical
       and artistic drawing, music composition, and circuit design.  Unidraw simpifies the construction of these
       editors by providing programming abstractions that are common across domains.  Unidraw defines four basic
       abstractions: components encapsulate the appearance and semantics of objects in a domain,  tools  support
       direct  manipulation  of  components,  commands  define  operations  on components and other objects, and
       external representations define the mapping between components and  the  file  format  generated  by  the
       editor.   Unidraw  also  supports  multiple  views,  graphical connectivity and confinement, and dataflow
       between components.

       The Unidraw library contains a collection of  classes  that  implement  the  Unidraw  architecture.   The
       Unidraw  library  is  used  together  with the rest of InterViews, except the graphic structured graphics
       library, to develop domain-specific graphical object editors.   InterViews  interactors  and  composition
       mechanisms  support  an  application's  look  and  feel, while the Unidraw library supports functionality
       unique to graphical object editors.  Currently, the Unidraw library provides its own structured  graphics
       classes,  which are similar to but incompatible with the graphic library classes.  Therefore you must not
       use both graphic and Unidraw classes in the same application.

       General Unidraw classes are declared in header files in the Unidraw include file subdirectory. Component,
       command, tool, and structured graphics classes are declared in  corresponding  subdirectories  under  the
       Unidraw subdirectory.

SEE ALSO

       InterViews(3I)

       Generalized  Graphical  Object  Editing,  John  M.  Vlissides,  Technical  Report CSL-TR-90-427, Stanford
       University, June 1990.

Unidraw                                           11 June 1990                                  UnidrawIntro(3U)