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evdev: query position ranges for MT, too

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For a true multi-touch input device, the code ended up using
uninitialised fields of evdev_input_device::abs.

Fix it by querying the corresponding MT ranges.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
This commit is contained in:
Pekka Paalanen 2012-07-31 13:21:07 +03:00 • committed by Jonas Ådahl
parent 19b5a3707a
commit 701024fd90
1 changed files with 8 additions and 0 deletions
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8
src/evdev.c
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@ -400,6 +400,14 @@ evdev_configure_device(struct evdev_input_device *device)
device->caps |= EVDEV_MOTION_ABS;
}
if (TEST_BIT(abs_bits, ABS_MT_SLOT)) {
ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
&absinfo);
device->abs.min_x = absinfo.minimum;
device->abs.max_x = absinfo.maximum;
ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
&absinfo);
device->abs.min_y = absinfo.minimum;
device->abs.max_y = absinfo.maximum;
device->is_mt = 1;
device->mt.slot = 0;
device->caps |= EVDEV_TOUCH;