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Prevent two-finger taps from being ignored

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When two fingers are used, the coordinates of only one of them is taken into
account. This can lead to sudden variations of the absolute coordinates when
two-fingers taps are performed if the finger considered changes.

Take into account coordinates variations to prevent unwanted taps only if
the number of fingers doesn't change.

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 7d0ff39519)
This commit is contained in:
Gabriele Mazzotta
2014-07-27 12:58:18 +02:00
committed by Peter Hutterer
parent cbf0ca508a
commit ae77fdfc8e
1 changed files with 3 additions and 2 deletions
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5
src/synaptics.c
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@@ -1960,8 +1960,9 @@ HandleTapProcessing(SynapticsPrivate * priv, struct SynapticsHwState *hw,
(priv->tap_max_fingers <=
((priv->horiz_scroll_twofinger_on ||
priv->vert_scroll_twofinger_on) ? 2 : 1)) &&
((abs(hw->x - priv->touch_on.x) >= para->tap_move) ||
(abs(hw->y - priv->touch_on.y) >= para->tap_move)));
(priv->prevFingers == hw->numFingers &&
((abs(hw->x - priv->touch_on.x) >= para->tap_move) ||
(abs(hw->y - priv->touch_on.y) >= para->tap_move))));
press = (hw->left || hw->right || hw->middle);
if (touch) {