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3dcf28b919
All touchpad recordings seen so far show that a value above 100 is definitely a thumb or a palm. Values below are harder to discern, and the same isn't true for touchpads supporting ABS_PRESSURE instead of ABS_MT_PRESSURE. The handling of a touch is as outlined in tp_thumb_detect: * thumbs are ignored for pointer motion * thumbs cancel gestures * thumbs are ignored for clickfinger count * edge scrolling doesn't care either way * software buttons don't care either way * tap: only if thumb on begin The handling of thumbs while tapping is the simplest approach only, more to come in follow-up patches. Note that "thumb" is the synonym for "this touch is too big to be a fingertip". Which means that a light thumb touch will still be counted as a finger. The side-effect here is that thumbs resting a the bottom edge of the touchpad will almost certainly not trigger the pressure threshold because most of the thumb is off the touchpad. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Hans de Goede <hdegoede@redhat.com> |
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/*!@mainpage libinput ======== libinput is a library that handles input devices for display servers and other applications that need to directly deal with input devices. It provides device detection, device handling, input device event processing and abstraction so minimize the amount of custom input code the user of libinput need to provide the common set of functionality that users expect. Input event processing includes scaling touch coordinates, generating pointer events from touchpads, pointer acceleration, etc. libinput originates from [weston](http://cgit.freedesktop.org/wayland/weston/), the Wayland reference compositor. Architecture ------------ libinput is not used directly by applications, rather it is used by the xf86-input-libinput X.Org driver or wayland compositors. The typical software stack for a system running Wayland is: @dotfile libinput-stack-wayland.gv Where the Wayland compositor may be Weston, mutter, KWin, etc. Note that Wayland encourages the use of toolkits, so the Wayland client (your application) does not usually talk directly to the compositor but rather employs a toolkit (e.g. GTK) to do so. The simplified software stack for a system running X.Org is: @dotfile libinput-stack-xorg.gv Again, on a modern system the application does not usually talk directly to the X server using Xlib but rather employs a toolkit to do so. Source code ----------- The source code of libinput can be found at: http://cgit.freedesktop.org/wayland/libinput For a list of current and past releases visit: http://www.freedesktop.org/wiki/Software/libinput/ Reporting Bugs -------------- Bugs can be filed in the libinput component of Wayland: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland&component=libinput Where possible, please provide an [evemu](http://www.freedesktop.org/wiki/Evemu/) recording of the input device and/or the event sequence in question. Documentation ------------- Developer API documentation: http://wayland.freedesktop.org/libinput/doc/latest/modules.html High-level documentation about libinput's features: http://wayland.freedesktop.org/libinput/doc/latest/pages.html License ------- libinput is licensed under the MIT license. > Permission is hereby granted, free of charge, to any person obtaining a > copy of this software and associated documentation files (the "Software"), > to deal in the Software without restriction, including without limitation > the rights to use, copy, modify, merge, publish, distribute, sublicense, > and/or sell copies of the Software, and to permit persons to whom the > Software is furnished to do so, subject to the following conditions: [...] See the [COPYING](http://cgit.freedesktop.org/wayland/libinput/tree/COPYING) file for the full license information. */