Notas del curso de Human-Computer Interaction – Implementación Vol.2

En este post continúo transcribiendo algunas notas que tomé durante el curso de Human-Computer Interaction del Interaction Design Foundation, cuyo profesor es Alan Dix.

El curso, que recomiendo fuertemente, está en

Este post está relacionado a la temática de Implementación, específicamente toolkits y capas.

Observación: ¡Las notas las redacté en inglés porque el curso es en inglés!

Espero que les sirvan 🙂

Implementation Support

Ways in which human-computer interaction directly affects the programmer:

  • Levels of abstraction – these are hardware-specific.
  • Three layers of development tools:
    • Windowing systems.
    • Interaction toolkits.
    • Architecture styles and frameworks.

Programming the Application – Toolkits

When coding applications you usually do not deal with the raw window manager or operating systems, but with a toolkit.

The toolkit is a little unit of canned code that works out how to show a button for example, and the actions associated with each element in the interface.

Toolkits and widgets are synonyms.

Widgets are interaction objects; they involve both input and output because they are intrinsically linked.

Toolkits have layout support already in them.

Toolkits package the interactions with the OS, like copy/paste and sound for example.



The toolkit is built on top of the window manager layer, so it is giving you a higher level of abstraction. This:

  • Promotes consistency.
  • Means it is easier to code.
  • Means it is easier to port between platforms. i.e: you could have a Java application working in a Macintosh OS or a Windows OS.

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