On Mon, Jun 25, 2012 at 03:39:58PM -0700, Jason Gerecke wrote:
> Axes which aren't used by specific devices 'leak' some of the
> settings of the prior axis while creating the necessary 'filler'
> axis. This patch introduces an 'initFillerAxis' function that
> provides a consistent filler axis and restructures calls as
> necessary.
>
> Signed-off-by: Jason Gerecke <killert...@gmail.com>
> ---
> src/xf86Wacom.c | 78
> +++++++++++++++++++++++++++++++++++----------------------
> 1 file changed, 48 insertions(+), 30 deletions(-)
>
> diff --git a/src/xf86Wacom.c b/src/xf86Wacom.c
> index 0190678..0f55fe1 100644
> --- a/src/xf86Wacom.c
> +++ b/src/xf86Wacom.c
> @@ -149,6 +149,11 @@ static void wcmInitAxis(DeviceIntPtr dev, int axis, Atom
> label, int min, int max
> );
> }
>
> +static void wcmInitFillerAxis(DeviceIntPtr dev, int axis)
> +{
> + wcmInitAxis(dev, axis, None, 0, 1, 1, 1, 1, Absolute);
> +}
> +
tbh I think I'd prefer just setting the various min/max to defaults and
calling a normal axis init. I think that'd make the code much more obivous.
this goes for 3/3 as well, I find the the current code with the blocked
min/max/etc assignments much easier to grok.
especially because of:
wcmInitAxis(..., min, max, res, min_res, max_res, mode)
vs:
wcmInitAxis(..., priv->topX, priv->bottomX, priv->resolX, 0, priv->resolX,
Absolute);
the former documents itself, the latter just means one has to look up what
the 0 stands for, why resolution is passed in twice, etc.
Cheers,
Peter
> static int
> wcmInitAxes(DeviceIntPtr pWcm)
> {
> @@ -194,76 +199,81 @@ wcmInitAxes(DeviceIntPtr pWcm)
> label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_PRESSURE);
> /* pressure normalized to FILTER_PRESSURE_RES */
> max = FILTER_PRESSURE_RES;
> + wcmInitAxis(pInfo->dev, 2, label, min, max, res, min_res,
> max_res, mode);
> +
> } else {
> /* The pad doesn't have a pressure axis, so initialise third
> * axis as unknown absolute axis on the pad. This way, we
> * can leave the strip/abswheel axes on later axes and don't
> * run the danger of clients misinterpreting the axis info
> */
> - label = None;
> - max = 1;
> + wcmInitFillerAxis(pInfo->dev, 2);
> }
>
> - wcmInitAxis(pInfo->dev, 2, label, min, max, res, min_res, max_res,
> mode);
> -
>
> /* fourth valuator: tilt-x, cursor:z-rotation, pad:strip-x */
> - if (IsCursor(priv))
> + if (IsPen(priv))
> + {
> + label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_X),
> + min = -64;
> + max = 63;
> + min_res = max_res = res = 1;
> + mode = Absolute;
> + wcmInitAxis(pInfo->dev, 3, label, min, max, res, min_res,
> max_res, mode);
> + }
> + else if (IsCursor(priv))
> {
> label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_RZ);
> min = MIN_ROTATION;
> max = MIN_ROTATION + MAX_ROTATION_RANGE - 1;
> min_res = max_res = res = 1;
> mode = Absolute;
> - } else if (IsPad(priv))
> + wcmInitAxis(pInfo->dev, 3, label, min, max, res, min_res,
> max_res, mode);
> + } else if (IsPad(priv) && TabletHasFeature(common, WCM_STRIP))
> {
> label = None; /* XXX: what is this axis? */
> min = 0;
> - max = 1; /* dummy value if !HasFeature(WCM_STRIP) */
> + max = common->wcmMaxStripX;
> min_res = max_res = res = 1;
> mode = Absolute;
> - if (TabletHasFeature(common, WCM_STRIP))
> - max = common->wcmMaxStripX;
> + wcmInitAxis(pInfo->dev, 3, label, min, max, res, min_res,
> max_res, mode);
> } else
> {
> - label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_X),
> - min = -64;
> - max = 63;
> - min_res = max_res = res = 1;
> - mode = Absolute;
> + wcmInitFillerAxis(pInfo->dev, 3);
> }
>
> - wcmInitAxis(pInfo->dev, 3, label, min, max, res, min_res, max_res,
> mode);
> -
>
> /* fifth valuator: tilt-y, cursor:throttle, pad:strip-y */
> - if (IsCursor(priv))
> + if (IsPen(priv))
> + {
> + label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_Y);
> + min = -64;
> + max = 63;
> + min_res = max_res = res = 1;
> + mode = Absolute;
> + wcmInitAxis(pInfo->dev, 4, label, min, max, res, min_res,
> max_res, mode);
> + }
> + else if (IsCursor(priv))
> {
> label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_THROTTLE);
> min = -1023;
> max = 1023;
> min_res = max_res = res = 1;
> mode = Absolute;
> - } else if (IsPad(priv))
> + wcmInitAxis(pInfo->dev, 4, label, min, max, res, min_res,
> max_res, mode);
> + } else if (IsPad(priv) && TabletHasFeature(common, WCM_STRIP))
> {
> label = None; /* XXX: what is this axis? */
> min = 0;
> - max = 1; /* dummy value if !HasFeature(WCM_STRIP) */
> + max = common->wcmMaxStripY;
> min_res = max_res = res = 1;
> mode = Absolute;
> - if (TabletHasFeature(common, WCM_STRIP))
> - max = common->wcmMaxStripY;
> + wcmInitAxis(pInfo->dev, 4, label, min, max, res, min_res,
> max_res, mode);
> } else
> {
> - label = XIGetKnownProperty(AXIS_LABEL_PROP_ABS_TILT_Y);
> - min = -64;
> - max = 63;
> - min_res = max_res = res = 1;
> - mode = Absolute;
> + wcmInitFillerAxis(pInfo->dev, 4);
> }
>
> - wcmInitAxis(pInfo->dev, 4, label, min, max, res, min_res, max_res,
> mode);
> -
>
> /* sixth valuator: airbrush: abs-wheel, artpen: rotation, pad:abs-wheel
> */
> if (IsStylus(priv))
> @@ -273,6 +283,7 @@ wcmInitAxes(DeviceIntPtr pWcm)
> min = MIN_ROTATION;
> min_res = max_res = res = 1;
> mode = Absolute;
> + wcmInitAxis(pInfo->dev, 5, label, min, max, res, min_res,
> max_res, mode);
> } else if ((TabletHasFeature(common, WCM_RING)) && IsPad(priv))
> {
> /* Touch ring */
> @@ -281,9 +292,12 @@ wcmInitAxes(DeviceIntPtr pWcm)
> max = MAX_PAD_RING;
> min_res = max_res = res = 1;
> mode = Absolute;
> + wcmInitAxis(pInfo->dev, 5, label, min, max, res, min_res,
> max_res, mode);
> + }
> + else
> + {
> + wcmInitFillerAxis(pInfo->dev, 5);
> }
> -
> - wcmInitAxis(pInfo->dev, 5, label, min, max, res, min_res, max_res,
> mode);
>
>
> /* seventh valuator: abswheel2 */
> @@ -298,6 +312,10 @@ wcmInitAxes(DeviceIntPtr pWcm)
>
> wcmInitAxis(pInfo->dev, 6, label, min, max, res, min_res,
> max_res, mode);
> }
> + else
> + {
> + wcmInitFillerAxis(pInfo->dev, 6);
> + }
>
> return TRUE;
> }
> --
> 1.7.11
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