diff options
| author | Peter Hutterer <peter.hutterer@who-t.net> | 2009-05-20 11:57:01 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2009-05-21 15:51:08 +1000 |
| commit | b358f1eb3a4ef8fdee099114d6c70d6ea06eba95 (patch) | |
| tree | c15be5bb3f4dcdaee756601c385d30cf6529908c /src/evdev.c | |
| parent | 33cc112ca1af377a85cfeb05dfb72f07d3850a95 (diff) | |
Ensure enough buttons are advertised to pass the button mapping.
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>
Diffstat (limited to 'src/evdev.c')
| -rw-r--r-- | src/evdev.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/evdev.c b/src/evdev.c index 4a9a331..63e70a3 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -1488,8 +1488,14 @@ EvdevProbe(InputInfoPtr pInfo) /* count all buttons */ for (i = BTN_MISC; i < BTN_JOYSTICK; i++) { + int mapping = 0; if (TestBit(i, pEvdev->key_bitmask)) - num_buttons++; + { + mapping = + pEvdev->btnmap[EvdevUtilButtonEventToButtonNumber(pEvdev, i)]; + if (mapping > num_buttons) + num_buttons = mapping; + } } if (num_buttons) |