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author | Chase Douglas <chase.douglas@canonical.com> | 2012-02-09 16:56:29 -0800 |
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committer | Chase Douglas <chase.douglas@canonical.com> | 2012-02-11 23:01:10 +0100 |
commit | 30e036aab834a504f9a316ad3fe04240cf24c098 (patch) | |
tree | 983bdf57befc02aec9fd8a8f6ff8ab8a2ced6654 | |
parent | d39f401c9ac21887fc427b91b262c0dae2549fe8 (diff) |
Ignore motion during touch count changes on semi-mt devicesclickpad-synaptics
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
-rw-r--r-- | src/synaptics.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/synaptics.c b/src/synaptics.c index c9be7b6..a74f7a6 100644 --- a/src/synaptics.c +++ b/src/synaptics.c @@ -1435,6 +1435,14 @@ ReadInput(InputInfoPtr pInfo) SynapticsResetTouchHwState(hw); while (SynapticsGetHwState(pInfo, priv, hw)) { + /* Semi-mt device touch slots do not track touches. When there is a + * change in the number of touches, we must disregard the temporary + * motion changes. */ + if (priv->has_semi_mt && hw->numFingers != priv->hwState->numFingers) { + hw->cumulative_dx = priv->hwState->cumulative_dx; + hw->cumulative_dy = priv->hwState->cumulative_dy; + } + SynapticsCopyHwState(priv->hwState, hw); delay = HandleState(pInfo, hw, hw->millis, FALSE); newDelay = TRUE; |