SummarySince multitouch interfaces are steadily moving out of the experimental niche, the demand for comprehensive programming support increases. Between the formation of de facto standards for multitouch gestures by the industry, and continued research and experimentation by developers or academia, the abstraction of gesture properties becomes essential. This paper contributes a revision of the Gesture Formalization for Multitouch (GeForMT) gesture description language. This language aims at a short and concise syntax, which is still able to capture the complexity of multitouch gestures. We report on a previously missing reference architecture and practical implementation. Based on a study comparing the revised GeForMT language with other formalization approaches for multitouch gestures, we introduce an editor for GeForMT.Copyright © 2013 John Wiley & Sons, Ltd.

This paper presents GeForMTjs, a library which features an abstract way of representing multi-touch gestures. A domain specific language for multi-touch gestures, Gesture Formalization for Multi-touch (GeForMT), is adapted to the needs of web development. Web standards are addressed and mouse input is incorporated as well. A short overview of related work shows that a formal abstraction of multi-touch gestures is missing in the web context. A brief example illustrates the seven processing steps of the library.