This is a followup of previous commit. We must set the win_subsystem
option on executable() so that the result binary is compiled as a GUI
application (and doesn't output a console every time).
The previous commit is still needed and is what allows us to control
when to actually display a console.
Now that we bumped our meson requirement, meson is complaining about
several features now deprecated even in the minimum required meson
version:
s/meson.source_root/meson.project_source_root/ to fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': meson.source_root. use meson.project_source_root() or meson.global_source_root() instead.
s/meson.build_root/meson.project_build_root/ to fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': meson.build_root. use meson.project_build_root() or meson.global_build_root() instead.
Fixing using path() on xdg_email and python ExternalProgram variables:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
s/get_pkgconfig_variable *(\([^)]*\))/get_variable(pkgconfig: \1)/ to
fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': dependency.get_pkgconfig_variable. use dependency.get_variable(pkgconfig : ...) instead
The initial attempt of this commit was to remove the `GtkAction` usage,
but grew a bit wider than that. The following happened:
* The dialog became a proper GObject, rather than being a big chunk of
static variables that were hopefully initialized before you used them.
* The dialog now uses `GAction`s to implement actions, and converted
some signal handlers to actions as well.
* The plug-in run procedure now uses `GtkApplication`. This is one hand
necessary to be able to set accelerators for actions, but on the other
hand is more future-proof, as GTK4 removes `gtk_main()`
This is an official way to declare these plug-ins as now
unmaintained/deprecated.
Relevant plug-ins are:
1) help-browser (Displaying the docs): nowadays every desktop machine
has a browser. Let's just use whatever is the person's default
browser.
2) web-page (Web screenshot): it looks to me like every browser has this
feature by default now (I use it all the time in Firefox to get a
full-page screenshot, never in GIMP), even on mobile, I am told. It's
nice to have it in GIMP too, but not like absolutely necessary.
On the other hand:
1. It's a hell to build, with a lot of issues. We have regular issues on
our Flatpak-s. We don't manage to build it on our CI (only locally
apparently). Also it takes a crazy amount of time (like 90% of CI
build-time would be webkit).
2. From what I gather, new versions don't work on Windows anymore. Even
MSYS2 seems to have dropped the ball and don't try anymore.
Basically we would have a feature disparity from GIMP 3.0 (most
platform but Windows). We don't know when it will be resolved (if
ever) as it's been like this for years.
Now why we are keeping the code around instead of just removing
everything is that the topic tree in the help browser is useful and
comfortable to use. Ideally we should get some equivalent to help
browsing the help efficiently in the web docs as well (so basically
menus, web search and alike?). So I am told to keep the code around at
least for now to see if we can figure something out or improve the
situation.
Except for this point, we can consider the WebkitGTK plug-ins as
deprecated from GIMP 3.0 on.
This gives a big cleanup in the meson.build files of the plug-ins.
It's also quite a bit more maintainable, since anything that changes in
libgimp's dependencies, linkage, ... doesn't have to be copy-pasted into
each plug-in.
