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e3a43902f9
Devices like Wacom tablets have multiple event nodes (touch, pad and stylus). This requires some logical grouping, e.g. setting an Intuos 5 tablet left-handed effectively turns it upside down. That then applies to both the stylus and the touch device. Merging the devices into one struct libinput_device is not feasable, it complicates the API for little benefit. A caller would still need access to all subdevices to get udev handles, etc. Some configuration options apply to the whole device (left-handed) but some (may) only apply to a single subdevice (calibration, natural scrolling). Addressing this would make the libinput API unwieldly and hard to use. Instead, add a device group concept. Each device is a member of a device group - a singleton for most devices. Wacom tablets will have a single group across multiple devices, allowing the caller to associate the devices together if needed. The API is intentionally very simple and requires the caller to keep track of groups and which/how many devices are in it. The caller has more powerful libraries available to do that than we have. This patch does not address the actual merging of devices into the same device group, it simply creates a new group for each new device. [rebased on top of 0.10] Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Jonas Ådahl <jadahl@gmail.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, the Wayland reference compositor. The source code of libinput can be found at: http://cgit.freedesktop.org/wayland/libinput For more information, visit: http://www.freedesktop.org/wiki/Software/libinput/ Bugs can be filed in the libinput component of Wayland: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland Online API documentation: http://wayland.freedesktop.org/libinput/doc/latest/modules.html */