Weighted N-finger scaling and scrolling

摘要

In one example, a method includes receiving an indication of an input gesture detected at a presence-sensitive input device, where the input gesture includes one or more input points and each input point is detected at a respective location of the presence-sensitive input device. The method may also include determining a focal point of the input gesture, and determining a radius length. The method may also include determining a shape centered at the focal point and having a size determined based on the radius length. The method may also include responding to a change in a geometric property of the shape by scaling information included in a graphical user interface, where the scaling of the information being centered at the focal point.

主权项

1. A method comprising:
receiving, by a computing device, an indication of an input gesture detected at a presence-sensitive input device, the input gesture including three or more input points, each input point being detected at a respective location of the presence-sensitive input device; determining, by the computing device and based on an average of coordinates of each of the three or more input points, a coordinate location of a focal point of the input gesture; determining, by the computing device, a polygon shape substantially centered at the coordinate location of the focal point, the polygon shape having a size determined based on the respective input points; and responsive to determining that a geometric property of the polygon shape has changed, outputting, by the computing device, a scaled version of information included in a graphical user interface, the scaled version of the information being based on the change in the geometric property and centered at the coordinate location of focal point.