XLibre/xf86-input-synaptics
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Always update the move_hist[] buffer when a finger is on the

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touchpad. Will be needed to implement coasting.
This commit is contained in:
Peter Osterlund
2005-01-05 20:55:09 +01:00
parent 50c7fdc462
commit 02f6b44dbb
2 changed files with 12 additions and 4 deletions
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15
synaptics.c
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@@ -1128,7 +1128,16 @@ HandleTapProcessing(SynapticsPrivate *priv, struct SynapticsHwState *hw,
return delay;
}
#define HIST(a) (priv->move_hist[((priv->count_packet_finger-(a))%SYNAPTICS_MOVE_HISTORY)])
#define HIST(a) (priv->move_hist[((priv->hist_index - (a) + SYNAPTICS_MOVE_HISTORY) % SYNAPTICS_MOVE_HISTORY)])
static void store_history(SynapticsPrivate *priv, int x, int y, unsigned int millis)
{
int idx = (priv->hist_index + 1) % SYNAPTICS_MOVE_HISTORY;
priv->move_hist[idx].x = x;
priv->move_hist[idx].y = y;
priv->move_hist[idx].millis = millis;
priv->hist_index = idx;
}
/*
* Estimate the slope for the data sequence [x3, x2, x1, x0] by using
@@ -1247,9 +1256,7 @@ static long ComputeDeltas(SynapticsPrivate *priv, struct SynapticsHwState *hw,
*dyP = dy;
/* generate a history of the absolute positions */
HIST(0).x = hw->x;
HIST(0).y = hw->y;
HIST(0).millis = hw->millis;
store_history(priv, hw->x, hw->y, hw->millis);
return delay;
}

1
synaptics.h
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@@ -160,6 +160,7 @@ typedef struct _SynapticsPrivateRec
int fifofd; /* fd for fifo */
SynapticsMoveHistRec move_hist[SYNAPTICS_MOVE_HISTORY]; /* movement history */
int hist_index; /* Last added entry in move_hist[] */
int largest_valid_x; /* Largest valid X coordinate seen so far */
int scroll_y; /* last y-scroll position */
int scroll_x; /* last x-scroll position */