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5324f425a1
The custom acceleration profile allow the user to define custom acceleration functions for each movement type per device, giving full control over accelerations behavior at different speeds. This commit introduces 2 movement types which corresponds to the 2 profiles currently in use by libinput. regular filter is Motion type. constant filter is Fallback type. This allows possible expansion of new movement types for the different devices. The custom pointer acceleration profile gives the user full control over the acceleration behavior at different speeds. The user needs to provide a custom acceleration function f(x) where the x-axis is the device speed and the y-axis is the pointer speed. The user should take into account the native device dpi and screen dpi in order to achieve the desired behavior/feel of the acceleration. The custom acceleration function is defined using n points which are spaced uniformly along the x-axis, starting from 0 and continuing in constant steps. There by the points defining the custom function are: (0 * step, f[0]), (1 * step, f[1]), ..., ((n-1) * step, f[n-1]) where f is a list of n unitless values defining the acceleration factor for each velocity. When a velocity value does not lie exactly on those points, a linear interpolation of the two closest points will be calculated. When a velocity value is greater than the max point defined, a linear extrapolation of the two biggest points will be calculated. Signed-off-by: Yinon Burgansky <51504-Yinon@users.noreply.gitlab.freedesktop.org> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> |
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| button-debouncing-state-machine.svg | ||
| button-debouncing-wave-diagram.txt | ||
| middle-button-emulation.svg | ||
| touchpad-edge-scrolling-state-machine.svg | ||
| touchpad-gestures-state-machine.svg | ||
| touchpad-softbutton-state-machine.svg | ||
| touchpad-tap-state-machine.svg | ||
