From: Chris Bagwell <ch...@cnpbagwell.com>
When out of proximity, changes to values to X/Y/etc are not
meaningful. Some non-wacom tablets will send these values while
out of proximity.
Although we correctly ignore their values elsewhere, its more
efficient to ignore right away.
Signed-off-by: Chris Bagwell <ch...@cnpbagwell.com>
---
src/wcmCommon.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/src/wcmCommon.c b/src/wcmCommon.c
index f68bc8b..1a87027 100644
--- a/src/wcmCommon.c
+++ b/src/wcmCommon.c
@@ -805,15 +805,22 @@ void wcmSendEvents(InputInfoPtr pInfo, const
WacomDeviceState* ds)
* if not.
****************************************************************************/
-static int wcmCheckSuppress(WacomCommonPtr common, const WacomDeviceState*
dsOrig,
- WacomDeviceState* dsNew)
+static int wcmCheckSuppress(WacomCommonPtr common,
+ const WacomDeviceState* dsOrig,
+ WacomDeviceState* dsNew)
{
int suppress = common->wcmSuppress;
/* NOTE: Suppression value of zero disables suppression. */
int returnV = 0;
- if (dsOrig->buttons != dsNew->buttons) returnV = 1;
+ /* Ignore all other changes that occur after initial out-of-prox. */
+ if (!dsNew->proximity && !dsOrig->proximity)
+ return 0;
+
+ /* Never ignore proximity changes. */
if (dsOrig->proximity != dsNew->proximity) returnV = 1;
+
+ if (dsOrig->buttons != dsNew->buttons) returnV = 1;
if (dsOrig->stripx != dsNew->stripx) returnV = 1;
if (dsOrig->stripy != dsNew->stripy) returnV = 1;
if (ABS(dsOrig->tiltx - dsNew->tiltx) > suppress) returnV = 1;
--
1.7.3.2
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