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keymap: fix keyup mappings

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It is possible that the modifier state on keyup is different from the
modifier state on keydown.  In that case the keycode lookup can end up
with different keys in case multiple keysym -> keycode mappings exist,
because it picks the mapping depending on modifier state.

To fix that change the lookup logic for keyup events.  Instead of
looking at the modifier state check the key state and prefer a keycodes
where the key is in "down" state right now.

Fixes: abb4f2c965 keymap: consider modifier state when picking a mapping
Buglink: https://bugs.launchpad.net/bugs/1738283
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1658676
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190122092814.14919-9-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2019-01-22 10:28:14 +01:00
parent 4ed26e19d9
commit 19c1b9fd3d
4 changed files with 37 additions and 24 deletions
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2
ui/vnc.c
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@ -1981,7 +1981,7 @@ static void key_event(VncState *vs, int down, uint32_t sym)
}
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF,
vs->vd->kbd) & SCANCODE_KEYMASK;
vs->vd->kbd, down) & SCANCODE_KEYMASK;
trace_vnc_key_event_map(down, sym, keycode, code2name(keycode));
do_key_event(vs, down, keycode, sym);
}