[sane-devel] Xsane "preview" glitch, FYI

[Ralph Little]

Hi,

On Fri, Jul 26, 2024 at 4:18 AM Jack Haverty <jack at 3kitty.org> wrote:

> FYI, I've noticed a problem with the Xsane preview window.  I'm currently
> running xsane 0.999 on Ubuntu 22.04 with Gnome or Cinnamon, using an Epson
> USB scanner with epkowa driver, but this xsane behavior has been similar
> for previous versions.
>
> When I open xsane, and then use VIEW and check the box to enable the
> preview window, that window comes up, but the display acts as a 1-pixel
> window in both the vertical and horizontal directions.   I.e., all of the
> preview scan, even the mouse cursor and UI such as "Acquire Preview",
> appears in a single pixel line on the left and top sides of the window.
>
> The workaround for this behavior is to QUIT xsane while the Preview window
> is visible (the View checkbox is checked).  Presumably that configuration
> is saved when you quite xsane.  When I then start xsane the next time, the
> preview window comes up at startup with all the rest of the GUI and works
> as you'd expect.
>
> Certainly not a critical bug and the workaround avoids the problem.  May
> be a bug somewhere in Ubuntu rather than xsane.    But I thought someone
> might want to investigate, or perhaps add the workaround to the 'Problems'
> menu.
>
> Jack
>
>
Yeah, there are some glitchy issues with the current (ancient) version of
XSane in window initialisation.
Hopefully, when we get a release out (soonish?) then I will hope to make
the various window init code more resilient.

Cheers,
Ralph
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