bug#46493: [feature/pgtk] Low contrast region face

[Dmitry Gutov <dgutov@yandex.ru>]

On 13.02.2021 22:53, Basil L. Contovounesios wrote:
> Dmitry Gutov <dgutov@yandex.ru> writes:
> 
>> On 13.02.2021 18:55, Basil L. Contovounesios wrote:
>>> X-Debbugs-Cc: Yuuki Harano <masm+emacs@masm11.me>
>>> Severity: wishlist
>>> On master:
>>> 0. emacs -Q
>>> 1. M-2 M-b
>>> 2. M-2 M-@
>>
>> That's not a GTK3 build, though, right?
> 
> configure.ac suggests otherwise:
> 
>    pgtk )
>      term_header=pgtkterm.h
>      with_gtk3=yes
>      USE_X_TOOLKIT=none
>    ;;
> 
> As does the GTK3 seen in the system-configuration-features part of my
> signature in the OP.

No, I'm talking about your "reference" screenshot.

You are not comparing pgtk to the GTK3 build, which I think should be 
the reference when discussing it.

>>> Repeat the same on feature/pgtk:
>>> I understand that each toolkit has its look & feel, and that colour
>>> perception is subjective, but the default contrast on pgtk strikes me as
>>> a bit too low for text editing.
>>
>> Seems like it uses the same background color as the GTK3 build (the current
>> one)? And that is probably the color of the window background.
>>
>> My current GTK theme has a bit darker windows, so the background color looks
>> like fine here, FWIW.
> 
> I don't use a desktop environment, and I'm not really familiar with GTK,
> but here's my $XDG_CONFIG_HOME/gtk-3.0/settings.ini:
> 
>    [Settings]
>    gtk-font-name                     = DejaVu Sans 10
>    gtk-icon-theme-name               = Adwaita
>    gtk-recent-files-enabled          = false
>    gtk-recent-files-limit            = 0
>    gtk-recent-files-max-age          = 0
>    gtk-theme-name                    = Adwaita

It's some color within the Adwaita theme, then.

>> But the screenshot exhibits another (definite) bug: when Emacs is just started,
>> the cursor shape is hollow. Switch away from its window and then back: the
>> cursor is now filled.
> 
> I can't reproduce that here.  My cursor is always filled so long as the
> frame is focused.  The hollow cursor in my screenshot seems to be the
> result of invoking scrot via gmrun, during which Emacs seems to lose
> focus.  I don't know why that doesn't happen with Lucid; I assumed it
> was just toolkit-specific behaviour.  [BTW, disabling blink-cursor-mode
> does not change anything.]
> 
> Is this rather some kind of mishandling of focus events on Emacs' side?

Hm, all right. Maybe I'll report it later.

I can easily reproduce it with the current feature/pgtk by just calling 
'src/emacs -Q'. The cursor is hollow until I switch windows or drag the 
current one.

Not so in the GTK3 build.