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HotDraw (abstract): a structured drawing editor framework for Smalltalk

Author:

Ralph JohnsonAuthors Info & Claims

ACM SIGPLAN OOPS Messenger, Volume 4, Issue 2

Page 232

https://doi.org/10.1145/157710.157803

Published: 01 December 1992 Publication History

Abstract

HotDraw is a framework for structured drawing editors that has been floating around the Smalltalk community for several years under several incarnations. It was originally developed by Kent Beck and Ward Cunningham, but has been reimplemented many times since then. Most of these implementations were proprietary. Our design extends the original one by making constraints more composable and by adding metafigures, but the system is instantly recognizable by anyone familiar with one of the earlier implementations.

We wrote a version of HotDraw for ObjectWorks\Smalltalk Release 4.0 that we are distributing. We will describe and demonstrate the basic framework and several applications built from it, such as a visual programming language, a tool for inspecting Smalltalk objects by drawing pictures of them, an environment for learning Smalltalk by issuing commands and writing scripts for visible objects, and a PERT chart editor. These applications illustrate several advanced Smalltalk techniques, such as light-weight classes, compiling code on the fly, and dynamically redirecting messages by overriding doesNotUnderstand:. Time permitting, well explore the implementation of HotDraw and how it uses these techniques.

Index Terms

HotDraw (abstract): a structured drawing editor framework for Smalltalk
1. Software and its engineering
  1. Software notations and tools
    1. General programming languages
      1. Language types

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HotDraw (abstract): a structured drawing editor framework for Smalltalk
OOPSLA '92: Addendum to the proceedings on Object-oriented programming systems, languages, and applications (Addendum)

HotDraw is a framework for structured drawing editors that has been floating around the Smalltalk community for several years under several incarnations. It was originally developed by Kent Beck and Ward Cunningham, but has been reimplemented many times ...
Object engineering (abstract)
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Converting an object-oriented design into class definitions in an object-oriented language often requires many engineering decisions. It is easy to make these decisions incorrectly for languages that give the programmer a lot of control over data ...
Object engineering (abstract)

Converting an object-oriented design into class definitions in an object-oriented language often requires many engineering decisions. It is easy to make these decisions incorrectly for languages that give the programmer a lot of control over data ...

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Information

Published In

ACM SIGPLAN OOPS Messenger Volume 4, Issue 2

April 1993

284 pages

ISSN:1055-6400

DOI:10.1145/157710

Issue’s Table of Contents

OOPSLA '92: Addendum to the proceedings on Object-oriented programming systems, languages, and applications (Addendum)
December 1992
320 pages
ISBN:0897916107
DOI:10.1145/157709
Editors:
Jerry L. Archibald,
Mark C. Wilkes

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 December 1992

Published in SIGPLAN-OOPS Volume 4, Issue 2

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Recommendations