ubuntu-x-swat team mailing list archive

[Chase Douglas <chase.douglas@xxxxxxxxxxxxx>]

On 09/12/2011 05:44 AM, Jussi Pakkanen wrote:
> The cause of (some part) of this bug is somewhere else. I removed all
> code from patch 503 and left only the part that adds new fields to
> structs. Effectively it looks like this:
> 
> --- a/include/inputstr.h
> +++ b/include/inputstr.h
> @@ -335,6 +335,8 @@ typedef struct _TouchPointInfo {
>      unsigned int history_size;      /* Size of history ring buffer */
>      InternalEvent *first_history;   /* Pointer to first event in history */
>      InternalEvent *next_history;    /* Pointer to next available event */
> +    int         untransformed_x;
> +    int         untransformed_y;
>  } TouchPointInfoRec;
>  
>  typedef struct _TouchAxisInfo {
> @@ -623,6 +625,8 @@ typedef struct _DeviceIntRec {
>          float           remainder[MAX_VALUATORS];
>          int             numValuators;
>          DeviceIntPtr    slave;
> +        int             untransformed_x;
> +        int             untransformed_y;
>      } last;
> 
> Simply applying this patch breaks pressure. Since this gets installed to
> /usr/include/xorg/inputstr.h, that means that someone (Qt probably) is
> using these structs incorrectly (creating them by themselves, building
> arrays or something else).

The TouchPointInfo* structure isn't used in xf86-input-evdev, so that
shouldn't be an issue. However, DeviceIntRec is used in the input
modules, so that could be an issue.

Jussi, please rebuild xserver-xorg-input-evdev against a server with
these struct changes to see if it fixes things.

Thanks!

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https://bugs.launchpad.net/bugs/799202

Title:
  wacom stylus jumps with latest xserver-xorg-core

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