VID
VID stands for Visual Interface Dialect. It is a dialect of Red, providing the simplest possible way to specify graphic components with their properties, layouts and even event handlers. VID code is compiled at runtime to a tree of faces suitable for displaying.
View
The GUI code engine contains several parts: Platform-independent faces management engine Reactive actions events Draw dialect interpreter Platform backends
React
Reactive actions can be defined directly from VID dialect or can be specified directly using the REACT function.
Draw
Draw is a Red dialect for 2D vector drawing. It can be specified in different ways:
in VID layouts
directly in the draw
property of any face object
* using the DRAW function to draw directly onto an image
OS-specific backends
An internal API allows the implementation of as many backends as are needed for the View engine. A backend must be capable of extensive 2D drawing for complete support of Draw dialect.
Disclaimer
The initial design of VID, Draw and most of View (except for the reactive parts) were created by Carl Sassenrath and implemented in Rebol. Red View is a completely new, independent implementation providing similar features with some improvements when desirable. Reactive actions being a prime example.