Dnia 2012-02-25, sob o godzinie 10:10 +0000, Przemo Firszt pisze:
> Dnia 2012-02-24, pią o godzinie 15:59 +0000, Przemo Firszt pisze:
> > Dnia 2012-02-24, pią o godzinie 09:55 -0600, Chris Bagwell pisze:
> [..]
> > > Sorry. No ideas except: Is this new behavior since changing to
> > > Procotol 5 (adding ABS_MISC)?
> >
> > I'd rather link it with the moment when I realised that my tablet is
> > handled by wvdev instead of wacom driver. Fixing the name and switching
> > to wacom broke rocker buttons. I'll confirm that.
>
> OK, lads, I narrowed down the problem (ssh & gdb are really good tools):
>
> wcmSendButtons (in wcmCommon.c) contains this:
>
> > /* Tablet PC buttons only apply to penabled devices */
> > if (common->wcmTPCButton && IsStylus(priv))
> > {
> > first_button = (buttons <= 1) ? 0 : 1;
> >
> > /* tip released? release all buttons */
> > if ((buttons & 1) == 0)
> > buttons = 0;
> > /* tip pressed? send all other button presses */
> > else if ((buttons & 1) != (priv->oldButtons & 1))
> > priv->oldButtons = 0;
> > /* other button changed while tip is still down? release
> > tip */
> > else if ((buttons & 1) && (buttons != priv->oldButtons))
> > {
> > buttons &= ~1;
> > first_button = 0;
> > }
> > }
>
> If I hover the stylus and press rocker button the condition
> (common->wcmTPCButton && IsStylus(priv)) is true. "buttons" equals 2 or
> 4 (right or middle button), but tip is not touching the surface, so this
> is also true: ((buttons & 1) == 0) and it means that buttons gets
> resetted to 0! That doesn't happen for eraser because IsStylus(priv) is
> false.
>
> When the tip is on the surface, buttons works as expected.
>
> Setting TabletPCButton to off fixes the problem:
>
> xsetwacom --set "Wacom Intuos4 WL stylus" "TabletPCButton" "off"
>
> but I belive that TabletPCButton should be "off" by default for Intuos4 WL.
>
> I'm tracking down why it's ON by defauls (if you know why, let me know!)
>
Next step: in wcmXCommand.c function wcmSetProperty(DeviceIntPtr dev,
Atom property, XIPropertyValuePtr prop, BOOL checkonly) is called by
xorg(?>>) with "property = prop_hover" and "checkonly = 0", so it is
flipping TabletPCButton to "on"
The question why remains :-)
--
Przemo
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