Active area mapping

Overview

Mapping is how the tablet driver translated the position of the pen on the EMR sensor (AKA “the digitizer”) to a position on display.

Mapping for pen displays

For pen displays, mapping is relatively straightforward because essentially the digitizer and the display are embedded in the same device.

Mapping for pen tablets

Active area mapping is a surprisingly complex topic, because it has to work in a number of different situations (single monitor, multiple monitors, etc.) AND is highly configurable AND and can even change dynamically at the press of a button.

For pen tablets (screenless tablets) mapping is the most complex, since the digitizer and the display are separate devices.

Dealing with mismatched aspect ratios

Because the tablet's active area and the display may have different aspect ratios, distortion can be introduced unless you enable Force Proportions: Matching aspect ratios with Force Proportions

Display Toggle for pen tablets and multiple monitors

When multiple monitors are being used, you can have the tablet switch between mapping to each monitor at the click of a button. See: Display toggle