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b358f1eb3a
Some buttons are mapped to higher button numbers. For example, BTN_0 is posted as button 8 if BTN_LEFT is present. On top of that, the driver-specific button mapping may map the button to something else again. We need to take these mappings into account when counting the number of buttons on the device. Example: A device with BTN_LEFT and BTN_0 and a mapping from 1 -> 7 and 8 -> 2. BTN_LEFT is mapped to 1. 1 is mapped to 7. num_buttons is 7. BTN_0 is mapped to 8. 8 is mapped to 2. num_buttons remains 7. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
xf86-input-evdev - Generic Linux input driver for the Xorg X server
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