On Wed, Aug 31, 2011 at 1:09 AM, Peter Hutterer
<peter.hutte...@who-t.net> wrote:
> On Sat, Aug 27, 2011 at 12:03:19PM -0500, ch...@cnpbagwell.com wrote:
>> From: Chris Bagwell <ch...@cnpbagwell.com>
>>
>> Signed-off-by: Chris Bagwell <ch...@cnpbagwell.com>
>> ---
>>
>> This patch is added to my github gesture3 branch but probably applys
>> fine to master as well.
>>
>> Current 2 finger gesture logic is geared towards resolution of old Bamboo
>> linuxwacom driver. It doesn't work well with Linux kernel Bamboo driver
>> (it scales up resolution) or various touchscreens of random resolution.
>>
>> src/wcmCommon.c | 9 +++++----
>> src/wcmTouchFilter.c | 36 ++++++++++++++++++++++++++----------
>> src/xf86Wacom.c | 1 +
>> src/xf86Wacom.h | 2 ++
>> src/xf86WacomDefs.h | 1 +
>> 5 files changed, 35 insertions(+), 14 deletions(-)
>>
>> diff --git a/src/wcmCommon.c b/src/wcmCommon.c
>> index e4ff7d9..1d38196 100644
>> --- a/src/wcmCommon.c
>> +++ b/src/wcmCommon.c
>> @@ -1393,11 +1393,12 @@ WacomCommonPtr wcmNewCommon(void)
>> common->wcmFlags = 0; /* various flags */
>> common->wcmProtocolLevel = WCM_PROTOCOL_4; /* protocol level */
>> common->wcmTPCButton = 0; /* set Tablet PC button on/off */
>> - common->wcmGestureParameters.wcmZoomDistance = 50;
>> - common->wcmGestureParameters.wcmZoomDistanceDefault = 50;
>> + common->wcmGestureParameters.wcmZoomDistance = -1;
>> + common->wcmGestureParameters.wcmZoomDistanceDefault = -1;
>
> git grep shows that wcmZoomDistanceDefault isn't used anywhere anymore. Best
> to remove it in that case. same with wcmScrollDistanceDefault.
>
Yep. Addressed. Hmm, cool tool. I'll have to play with that more.
>> common->wcmGestureParameters.wcmScrollDirection = 0;
>> - common->wcmGestureParameters.wcmScrollDistance = 20;
>> - common->wcmGestureParameters.wcmScrollDistanceDefault = 20;
>> + common->wcmGestureParameters.wcmScrollDistance = -1;
>> + common->wcmGestureParameters.wcmScrollDistanceDefault = -1;
>> + common->wcmGestureParameters.wcmInlineDistance = -1;
>> common->wcmGestureParameters.wcmTapTime = 250;
>> common->wcmGestureParameters.wcmTapTimeDefault = 250;
>> common->wcmRotate = ROTATE_NONE; /* default tablet rotation to off */
>> diff --git a/src/wcmTouchFilter.c b/src/wcmTouchFilter.c
>> index 1600705..0e1e258 100644
>> --- a/src/wcmTouchFilter.c
>> +++ b/src/wcmTouchFilter.c
>> @@ -24,7 +24,6 @@
>> #include <math.h>
>>
>> /* Defines for 2FC Gesture */
>> -#define WACOM_INLINE_DISTANCE 40
>> #define WACOM_HORIZ_ALLOWED 1
>> #define WACOM_VERT_ALLOWED 2
>> #define WACOM_GESTURE_LAG_TIME 10
>> @@ -43,6 +42,20 @@
>> static void wcmFingerScroll(WacomDevicePtr priv);
>> static void wcmFingerZoom(WacomDevicePtr priv);
>>
>> +void wcmInitGestureSizes(InputInfoPtr pInfo)
>> +{
>> + WacomDevicePtr priv = (WacomDevicePtr) pInfo->private;
>> + WacomCommonPtr common = priv->common;
>> + WacomGesturesParameters *gp = &common->wcmGestureParameters;
>> +
>> + if (gp->wcmZoomDistance == -1)
>> + gp->wcmZoomDistance = priv->maxX * (1600.0 / 14720);
>> + if (gp->wcmScrollDistance == -1)
>> + gp->wcmScrollDistance = priv->maxX * (640.0 / 14720);
>> + if (gp->wcmInlineDistance == -1)
>> + gp->wcmInlineDistance = priv->maxX * (1280.0 / 14720);
>
> where do these numbers come from again?
Good question. :-) They come from the original wcm*Distance values
used in init function that was deleted but scaling them up with "<< 5"
to match how kernel driver is also scaling up reported values by "<<
5". The maximum value of 14720 also comes from latest Bamboo reported
maximums.
I'm not sure they are ideal values yet but work reasonably well.
> shouldn't they have defines?
Dunno. Your call. xf86-input-synaptics didn't do it for similar
values. Original code in init didn't either. So I didn't bother.
I can see some value in #define MAX_BAMBOO_X 14720 to let reader know
where that came from. MAX synaptics X value is a little more defacto
value so not as confusing.
>
>> +}
>> +
>> static double touchDistance(WacomDeviceState ds0, WacomDeviceState ds1)
>> {
>> int xDelta = ds0.x - ds1.x;
>> @@ -61,17 +74,18 @@ static Bool pointsInLine(WacomCommonPtr common,
>> WacomDeviceState ds0,
>> WACOM_HORIZ_ALLOWED : WACOM_VERT_ALLOWED;
>> int vertical_rotated = (rotated) ?
>> WACOM_VERT_ALLOWED : WACOM_HORIZ_ALLOWED;
>> + int inline_distance = common->wcmGestureParameters.wcmInlineDistance;
>>
>> if (!common->wcmGestureParameters.wcmScrollDirection)
>> {
>> - if ((abs(ds0.x - ds1.x) < WACOM_INLINE_DISTANCE) &&
>> - (abs(ds0.y - ds1.y) > WACOM_INLINE_DISTANCE))
>> + if ((abs(ds0.x - ds1.x) < inline_distance) &&
>> + (abs(ds0.y - ds1.y) > inline_distance))
>> {
>> common->wcmGestureParameters.wcmScrollDirection =
>> horizon_rotated;
>> ret = TRUE;
>> }
>> - if ((abs(ds0.y - ds1.y) < WACOM_INLINE_DISTANCE) &&
>> - (abs(ds0.x - ds1.x) > WACOM_INLINE_DISTANCE))
>> + if ((abs(ds0.y - ds1.y) < inline_distance) &&
>> + (abs(ds0.x - ds1.x) > inline_distance))
>> {
>> common->wcmGestureParameters.wcmScrollDirection =
>> vertical_rotated;
>> ret = TRUE;
>> @@ -79,12 +93,12 @@ static Bool pointsInLine(WacomCommonPtr common,
>> WacomDeviceState ds0,
>> }
>> else if (common->wcmGestureParameters.wcmScrollDirection ==
>> vertical_rotated)
>> {
>> - if (abs(ds0.y - ds1.y) < WACOM_INLINE_DISTANCE)
>> + if (abs(ds0.y - ds1.y) < inline_distance)
>> ret = TRUE;
>> }
>> else if (common->wcmGestureParameters.wcmScrollDirection ==
>> horizon_rotated)
>> {
>> - if (abs(ds0.x - ds1.x) < WACOM_INLINE_DISTANCE)
>> + if (abs(ds0.x - ds1.x) < inline_distance)
>> ret = TRUE;
>> }
>> return ret;
>> @@ -414,6 +428,7 @@ static void wcmFingerScroll(WacomDevicePtr priv)
>> int midPoint_old = 0;
>> int i = 0, dist = 0;
>> WacomFilterState filterd; /* borrow this struct */
>> + int inline_distance = common->wcmGestureParameters.wcmInlineDistance;
>>
>> DBG(10, priv, "\n");
>>
>> @@ -421,7 +436,7 @@ static void wcmFingerScroll(WacomDevicePtr priv)
>> {
>> if (abs(touchDistance(ds[0], ds[1]) -
>> touchDistance(common->wcmGestureState[0],
>> - common->wcmGestureState[1])) < WACOM_INLINE_DISTANCE)
>> + common->wcmGestureState[1])) < inline_distance)
>> {
>> /* two fingers stay close to each other all the time
>> and
>> * move in vertical or horizontal direction together
>> @@ -511,6 +526,7 @@ static void wcmFingerZoom(WacomDevicePtr priv)
>> int count, button;
>> int dist = touchDistance(common->wcmGestureState[0],
>> common->wcmGestureState[1]);
>> + int inline_distance = common->wcmGestureParameters.wcmInlineDistance;
>>
>> DBG(10, priv, "\n");
>>
>> @@ -520,13 +536,13 @@ static void wcmFingerZoom(WacomDevicePtr priv)
>> if (abs(touchDistance(ds[0], ds[1]) -
>> touchDistance(common->wcmGestureState[0],
>> common->wcmGestureState[1])) >
>> - (3 * WACOM_INLINE_DISTANCE))
>> + (3 * inline_distance))
>> {
>> /* left button might be down, send it up first */
>> wcmSendButtonClick(priv, 1, 0);
>>
>> /* fingers moved apart more than 3 times
>> - * WACOM_INLINE_DISTANCE, zoom mode is entered */
>> + * wcmInlineDistance, zoom mode is entered */
>> common->wcmGestureMode = GESTURE_ZOOM_MODE;
>> }
>> }
>> diff --git a/src/xf86Wacom.c b/src/xf86Wacom.c
>> index 16561b5..62738a6 100644
>> --- a/src/xf86Wacom.c
>> +++ b/src/xf86Wacom.c
>> @@ -436,6 +436,7 @@ static int wcmDevInit(DeviceIntPtr pWcm)
>> {
>> wcmInitialToolSize(pInfo);
>> wcmMappingFactor(pInfo);
>> + wcmInitGestureSizes(pInfo);
>> }
>>
>> if (!wcmInitAxes(pWcm))
>> diff --git a/src/xf86Wacom.h b/src/xf86Wacom.h
>> index 60353dc..72d06bb 100644
>> --- a/src/xf86Wacom.h
>> +++ b/src/xf86Wacom.h
>> @@ -128,6 +128,8 @@ Bool wcmAreaListOverlap(WacomToolAreaPtr area,
>> WacomToolAreaPtr list);
>>
>> /* calculate the proper tablet to screen mapping factor */
>> void wcmMappingFactor(InputInfoPtr pInfo);
>> +/* calculate gesture sizes based on tablet sizes */
>> +void wcmInitGestureSizes(InputInfoPtr pInfo);
>>
>> /* validation */
>> extern Bool wcmIsAValidType(InputInfoPtr pInfo, const char* type);
>> diff --git a/src/xf86WacomDefs.h b/src/xf86WacomDefs.h
>> index 94eee2e..65b7088 100644
>> --- a/src/xf86WacomDefs.h
>> +++ b/src/xf86WacomDefs.h
>> @@ -414,6 +414,7 @@ typedef struct {
>> int wcmZoomDistanceDefault; /* default minimum distance for a zoom
>> touch gesture */
>> int wcmScrollDistance; /* minimum motion before sending a
>> scroll gesture */
>> int wcmScrollDirection; /* store the vertical or horizontal bit
>> in use */
>> + int wcmInlineDistance; /* maximum distance between fingers for
>> scroll gesture */
>
> this should probably be named something like maxScrollDistance to be more
> explanatory.
Makes sense. I'll update. Maybe wcmMaxScrollWidth is even better?
Distance makes me think about fingers traveling.
>
> Cheers,
> Peter
>
>> int wcmScrollDistanceDefault; /* default minimum motion before
>> sending a scroll gesture */
>> int wcmGestureUsed; /* retain used gesture count within one
>> in-prox event */
>> int wcmTapTime; /* minimum time between taps for a
>> right click */
>> --
>> 1.7.6
>
>
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