Thinkpad fingerprint

[Titus Johnson]

fingerprint sensor functionality please.

On 02/05/2015 07:58 PM, wayland-devel-request at lists.freedesktop.org wrote:
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> Today's Topics:
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>     1. Re: [PATCH weston v2] desktop-shell: Fail if get_xdg_surface
>        is called on an xdg_surface (Jasper St. Pierre)
>     2. Re: [PATH wayland] allow to set server socket dir on a
>        different directory than XDG_RUNTIME_DIR (Bettio, Davide)
>     3. Re: [PATCH libinput v2] Fix an abort if the device speed is
>        NaN (Peter Hutterer)
>     4. [ANNOUNCE] libinput 0.10.0 (Peter Hutterer)
>     5. Re: [PATCH libinput] Introduce device groups to group logical
>        devices together (Peter Hutterer)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 5 Feb 2015 15:57:58 -0800
> From: "Jasper St. Pierre" <jstpierre at mecheye.net>
> To: Bill Spitzak <spitzak at gmail.com>
> Cc: Jonas Ådahl <jadahl at gmail.com>,
> 	"wayland-devel at lists.freedesktop.org"
> 	<wayland-devel at lists.freedesktop.org>
> Subject: Re: [PATCH weston v2] desktop-shell: Fail if get_xdg_surface
> 	is called on an xdg_surface
> Message-ID:
> 	<CAA0H+QRHZujCqc8TCmyAVgD3ZUaGavy+7HpE2cHK3KLyNbUeaQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> The issue isn't "there's already a role". The issue is that we don't allow
> two xdg_surface proxies for the same surface (a currently-undocumented but
> sane limitation). For pretty much any other surface role, allowing the
> surface to re-gain its role is a feature, not a bug.
>
> On Thu, Feb 5, 2015 at 1:46 PM, Bill Spitzak <spitzak at gmail.com> wrote:
>
>> How about a wrapper function around weston_surface_set_role that always
>> fails if there is a non-zero role, and then call that? You can then
>> gradually transition all the other calls to this new one, and if they are
>> all changed then remove the old function.
>>
>>
>> On 02/05/2015 05:21 AM, Jonas Ådahl wrote:
>>
>>> If a client calls xdg_shell.get_xdg_surface on a surface that is already
>>> an xdg_surface wold, prior to this patch, succeed, but cause weston to
>>> crash later when trying to configure. This patch instead sends a role
>>> error to the client complaining that it already is an xdg_surface.
>>>
>>> Note that .._set_role() only fails when changing roles, not when setting
>>> the same role twice.
>>>
>>> The same is done for xdg_popup.
>>>
>>> Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
>>> Reviewed-by: Daniel Stone <daniels at collabora.com>
>>> ---
>>>
>>> Changed since v1:
>>>
>>> Put the assignments on their own lines.
>>>
>>>
>>>    desktop-shell/shell.c | 16 ++++++++++++++++
>>>    1 file changed, 16 insertions(+)
>>>
>>> diff --git a/desktop-shell/shell.c b/desktop-shell/shell.c
>>> index a7514f7..d4407d0 100644
>>> --- a/desktop-shell/shell.c
>>> +++ b/desktop-shell/shell.c
>>> @@ -3959,6 +3959,14 @@ xdg_get_xdg_surface(struct wl_client *client,
>>>          struct desktop_shell *shell = sc->shell;
>>>          struct shell_surface *shsurf;
>>>
>>> +       shsurf = get_shell_surface(surface);
>>> +       if (shsurf && shell_surface_is_xdg_surface(shsurf)) {
>>> +               wl_resource_post_error(resource, XDG_SHELL_ERROR_ROLE,
>>> +                                      "This wl_surface is already an "
>>> +                                      "xdg_surface");
>>> +               return;
>>> +       }
>>> +
>>>          if (weston_surface_set_role(surface, "xdg_surface",
>>>                                      resource, XDG_SHELL_ERROR_ROLE) < 0)
>>>                  return;
>>> @@ -4052,6 +4060,14 @@ xdg_get_xdg_popup(struct wl_client *client,
>>>          struct weston_surface *parent;
>>>          struct shell_seat *seat;
>>>
>>> +       shsurf = get_shell_surface(surface);
>>> +       if (shsurf && shell_surface_is_xdg_popup(shsurf)) {
>>> +               wl_resource_post_error(resource, XDG_SHELL_ERROR_ROLE,
>>> +                                      "This wl_surface is already an "
>>> +                                      "xdg_popup");
>>> +               return;
>>> +       }
>>> +
>>>          if (weston_surface_set_role(surface, "xdg_popup",
>>>                                      resource, XDG_SHELL_ERROR_ROLE) < 0)
>>>                  return;
>>>
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