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Fix MT slot index handling

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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2013-05-30 12:18:39 +10:00
parent a3255d3ec7
commit 8034fdd0d7
1 changed files with 9 additions and 5 deletions
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14
libevdev/libevdev.c
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@ -346,11 +346,13 @@ sync_mt_state(struct libevdev *dev)
struct input_event ev;
for (i = ABS_MT_MIN; i < ABS_MT_MAX; i++) {
int idx;
if (i == ABS_MT_SLOT)
continue;
mt_state[i].code = i;
rc = ioctl(dev->fd, EVIOCGMTSLOTS(sizeof(struct mt_state)), &mt_state[i]);
idx = i - ABS_MT_MIN;
mt_state[idx].code = i;
rc = ioctl(dev->fd, EVIOCGMTSLOTS(sizeof(struct mt_state)), &mt_state[idx]);
if (rc < 0)
goto out;
}
@ -360,10 +362,12 @@ sync_mt_state(struct libevdev *dev)
init_event(&ev, EV_ABS, ABS_MT_SLOT, i);
dev->sync_callback(dev, &ev, dev->userdata);
for (j = ABS_MT_MIN; j < ABS_MT_MAX; j++) {
if (dev->mt_slot_vals[i][j] != mt_state[j].val[i]) {
init_event(&ev, EV_ABS, j, mt_state[j].val[i]);
int jdx = j - ABS_MT_MIN;
if (dev->mt_slot_vals[i][jdx] != mt_state[jdx].val[i]) {
init_event(&ev, EV_ABS, j, mt_state[jdx].val[i]);
dev->sync_callback(dev, &ev, dev->userdata);
dev->mt_slot_vals[i][j] = mt_state[j].val[i];
dev->mt_slot_vals[i][jdx] = mt_state[jdx].val[i];
}
}
}