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Reset scroll delta when no finger is touching

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Provides for a more consistent scrolling experience, otherwise delta
leftovers may trigger extra events even when the actual scrolling action
stays the same.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
This commit is contained in:
Peter Hutterer
2012-04-26 12:00:49 +10:00
parent 1a76d9f00e
commit 58581bfbec
1 changed files with 2 additions and 0 deletions
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2
src/synaptics.c
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@@ -2398,6 +2398,8 @@ HandleScrolling(SynapticsPrivate *priv, struct SynapticsHwState *hw,
/* scroll detection */
if (finger && priv->finger_state == FS_UNTOUCHED) {
stop_coasting(priv);
priv->scroll.delta_y = 0;
priv->scroll.delta_x = 0;
if (para->circular_scrolling) {
if ((para->circular_trigger == 0 && edge) ||
(para->circular_trigger == 1 && edge & TOP_EDGE) ||