Hi Ping, > > How about ABS_MT_TOOL_X/Y? > > I am ok if we use any one of the suggested terms. The term is non > technical per se. Readers will have to look into the spec to > understand what exactly it means. But, I'd choose ABS_MT_CENTER_X/Y if > we can only pick one from the suggested ones. > > MT_TOOL_X/Y is unique. But, it introduces TOOL to the term. That makes > me think about MT_TOOL_FINGER and MT_TOOL_PEN, which are irrelevant to > this context. On the contrary, tool as a base makes a lot of sense here. For the single-pointer case, we have tool types and tool size already. If we were to add a tool position, we would naturally think of ABS_TOOL_X/Y. For the MT case, MT_TOOL_* are the tool types, and ABS_MT_WIDTH_* is the tool size. It was chosen in analogy with ABS_TOOL_WIDTH, although the TOOL part was dropped in favor of a shorter name. In retrospect, ABS_MT_POSITION_X should have been named ABS_MT_TOUCH_X and ABS_MT_WIDTH_MAJOR could have been named ABS_MT_TOOL_MAJOR. This would more clearly have shown the events being properties of two objects, tool and touch. With that in mind, ABS_MT_TOOL_X is a natural choice. Thanks, Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
