The Shiny project has been designed to ensure good separation between the widget code and the lower-level rendering code that widgets utilize. It is also built with the understanding that graphical drivers may be useful on more than a single platform and could potentially be changed or added to over time.
Design and supported platforms
Architecture
The Shiny API is split into two layers, a lower layer that handles graphical buffers and rendering, and a higher layer where the widget and layout code is located. Each layer has clear responsibilities and their separation helps to maintain a clean API.
