[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694
Bug 786694 depends on bug 786693, which changed state.

Bug 786693 Summary: wayland: fix fontconfig monitoring
https://bugzilla.gnome.org/show_bug.cgi?id=786693

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |OBSOLETE

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368835|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #369015|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

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 Attachment #368945|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368943|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368834|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368833|none|committed
 status||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #26 from Bastien Nocera  ---
Attachment 368833 pushed as 522640a - xsettings: Expose monitored settings
through D-Bus
Attachment 368834 pushed as 85e162f - xsettings: Use temporary variable for
GTK+ modules dir
Attachment 368835 pushed as 2b79fb8 - xsettings: Make it possible to override
GTK+ modules path
Attachment 368943 pushed as e514810 - xsettings: Make it possible to ignore
llvmpipe
Attachment 368945 pushed as 26e1e1e - tests: Rename work directory
Attachment 369014 pushed as 8ec7856 - xsettings: Add tests for D-Bus interface
Attachment 369015 pushed as 9dbb9e8 - tests: Fix concurrent launches of
Xorg-reliant test cases

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #25 from Bastien Nocera  ---
Created attachment 369015
  --> https://bugzilla.gnome.org/attachment.cgi?id=369015=edit
tests: Fix concurrent launches of Xorg-reliant test cases

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368944|0   |1
is obsolete||

--- Comment #24 from Bastien Nocera  ---
Created attachment 369014
  --> https://bugzilla.gnome.org/attachment.cgi?id=369014=edit
xsettings: Add tests for D-Bus interface

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #23 from Bastien Nocera  ---
Created attachment 368945
  --> https://bugzilla.gnome.org/attachment.cgi?id=368945=edit
tests: Rename work directory

There's more than just a power test now.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368931|0   |1
is obsolete||

--- Comment #22 from Bastien Nocera  ---
Created attachment 368944
  --> https://bugzilla.gnome.org/attachment.cgi?id=368944=edit
xsettings: Add tests for D-Bus interface

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #21 from Bastien Nocera  ---
Created attachment 368943
  --> https://bugzilla.gnome.org/attachment.cgi?id=368943=edit
xsettings: Make it possible to ignore llvmpipe

So that we can test out vino support.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368836|0   |1
is obsolete||

--- Comment #20 from Bastien Nocera  ---
Created attachment 368931
  --> https://bugzilla.gnome.org/attachment.cgi?id=368931=edit
xsettings: Add tests for D-Bus interface

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #19 from Bastien Nocera  ---
Created attachment 368836
  --> https://bugzilla.gnome.org/attachment.cgi?id=368836=edit
xsettings: Add tests for D-Bus interface

FIXME, EnableAnimations doesn't work because the test can't create a
"boolean" property, and I don't know why.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #18 from Bastien Nocera  ---
Created attachment 368835
  --> https://bugzilla.gnome.org/attachment.cgi?id=368835=edit
xsettings: Make it possible to override GTK+ modules path

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368775|0   |1
is obsolete||

--- Comment #16 from Bastien Nocera  ---
Created attachment 368833
  --> https://bugzilla.gnome.org/attachment.cgi?id=368833=edit
xsettings: Expose monitored settings through D-Bus

A number of things that gnome-settings-daemon monitors for all the GTK+
applications aren't currently available for GTK+ Wayland clients, only
through XSettings.

As we already monitor fontconfig configurations, enabled GTK+ modules
and whether applications should use animations, export those through a
D-Bus interface.

See https://bugzilla.gnome.org/show_bug.cgi?id=786693

Based on patch by Martin Blanchard 

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #17 from Bastien Nocera  ---
Created attachment 368834
  --> https://bugzilla.gnome.org/attachment.cgi?id=368834=edit
xsettings: Use temporary variable for GTK+ modules dir

So that we can override it later.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368734|0   |1
is obsolete||

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #15 from Bastien Nocera  ---
The patch above is completely untested, and the GTK+ patch needs rewriting.

You might need to also apply the patch from bug 793721 for this one to apply.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #14 from Bastien Nocera  ---
Created attachment 368775
  --> https://bugzilla.gnome.org/attachment.cgi?id=368775=edit
xsettings: Expose monitored settings through D-Bus

A number of things that gnome-settings-daemon monitors for all the GTK+
applications aren't currently available for GTK+ Wayland clients, only
through XSettings.

As we already monitor fontconfig configurations, enabled GTK+ modules
and whether applications should use animations, export those through a
D-Bus interface.

See https://bugzilla.gnome.org/show_bug.cgi?id=786693

Based on patch by Martin Blanchard 

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #13 from Bastien Nocera  ---
The XSettings in the xsettings plugin are either:
- in GSettings, and GTK+ will read those directly under Wayland
- hardcoded in gnome-settings-daemon, for older versions of GTK+, and hardcoded
in newer versions of GTK+ 3.x
- "computed" in the xsettings plugin

Those last ones are what we're interested in here. They are:
- fontconfig timestamps (Fontconfig/Timestamp)
- whether to enable animations (used for remote displays, Gtk/EnableAnimations)
- GTK+ modules list (Gtk/Modules)
- whether gnome-shell (and its builtin menu) is running (Gtk/ShellShowsAppMenu)
- a number of font and DPI settings (see xft_settings_set_xsettings())

That last two are handled directly in GTK+ in Wayland talking to the compositor
and checking its capabilities, or in gdk/wayland/gdkscreen-wayland.c.

Which leaves us with those first 3 settings (for now).

So, on top of the fontconfig specific changes above, it would be nice if:
- the D-Bus name showed that the settings are GTK+ specific, say
"org.gtk.Settings"
- also export Gtk/EnableAnimations and the modules list through D-Bus

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Bastien Nocera  changed:

   What|Removed |Added

 Attachment #368734|none|needs-work
 status||

--- Comment #12 from Bastien Nocera  ---
Review of attachment 368734:

1) Get rid of the array
2) Every time a timestamp change has happened, queue sending the new value for
half-a-second (or a second?), reschedule if a new timestamp arrives in that
time
3) Don't use g_get_real_time()

::: plugins/xsettings/gsd-xsettings-manager.c
@@ +80,3 @@
+static const gchar introspection_xml[] =
+""
+"  "

Is this really the name of the interface we want to use? What about GTK+ apps
under other Wayland desktops?

@@ +284,3 @@
 GSettings *plugin_settings;
 FcMonitor *fontconfig_monitor;
+GArray*fontconfig_timestamps;

I've stared at the code for a long while, and can't figure out why you need to
send a "changed" signal for each and every fontconfig timestamp change. Why do
that?

You could just keep the last one, and send it out when it changes, or
aggregate/coalesce the changes into one event if the changes are too close
together. You need to remember that this would wake up every single GTK+
program, so less notifications is better.

@@ +1189,3 @@
 GList   *list, *l;
 const char  *session;
+gint64   timestamp = g_get_real_time ();

You shouldn't user g_get_real_time(), this will break if the time on the
machine is changed. Any reason why g_get_monotonic_time() can't be used?

@@ +1453,3 @@
+manager = GNOME_XSETTINGS_MANAGER (user_data);
+
+if (manager->priv->dbus_connection == NULL)

This isn't necessary, you get a connection in the arguments of the function
above, and you don't use this variable anyway.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #11 from Bastien Nocera  ---
(In reply to Martin Blanchard from comment #10)
> (In reply to Bastien Nocera from comment #8)
> > It's too late to land this for GNOME 3.28. The gnome-shell patch will need
> > reviewing before this can land, assuming the code is correct.
> 
> May have missed something here, sorry: what is this gnome-shell patch you
> are talking about?

Never mind, the gtk+ patch rather. I'll review it later.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #10 from Martin Blanchard  ---
(In reply to Bastien Nocera from comment #8)
> It's too late to land this for GNOME 3.28. The gnome-shell patch will need
> reviewing before this can land, assuming the code is correct.

May have missed something here, sorry: what is this gnome-shell patch you are
talking about?

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Martin Blanchard  changed:

   What|Removed |Added

 Attachment #368196|0   |1
is obsolete||

--- Comment #9 from Martin Blanchard  ---
Created attachment 368734
  --> https://bugzilla.gnome.org/attachment.cgi?id=368734=edit
Introduce org.gnome.SettingsDaemon.FontConfig (timestamp as int64)

Fourth version: removed a couple of extra whitespaces.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Martin Blanchard  changed:

   What|Removed |Added

 Attachment #365988|0   |1
is obsolete||

Bastien Nocera  changed:

   What|Removed |Added

 CC||bugzi...@hadess.net

--- Comment #7 from Martin Blanchard  ---
Created attachment 368188
  --> https://bugzilla.gnome.org/attachment.cgi?id=368188=edit
Introduce org.gnome.SettingsDaemon.FontConfig (timestamp as int64)

Second version: time is represented as int64 and valued using
g_get_real_time().

Comments and feedbacks welcome.

--- Comment #8 from Bastien Nocera  ---
It's too late to land this for GNOME 3.28. The gnome-shell patch will need
reviewing before this can land, assuming the code is correct.

At a glance, you'll want to go through the patch and remove the unnecessary
whitespace changes.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Martin Blanchard  changed:

   What|Removed |Added

 Attachment #365988|0   |1
is obsolete||

--- Comment #6 from Martin Blanchard  ---
Created attachment 368188
  --> https://bugzilla.gnome.org/attachment.cgi?id=368188=edit
Introduce org.gnome.SettingsDaemon.FontConfig (timestamp as int64)

Second version: time is represented as int64 and valued using
g_get_real_time().

Comments and feedbacks welcome.

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #5 from Martin Blanchard  ---
(In reply to Matthias Clasen from comment #3)
> Should maybe be 'u' instead of 'i' ?

Not sure about what to do here: xsettings plugin is using an int value
retrieved from time(), gtk+'s setting in uint, and GLib's time seems to be
represented by int64...

In my opinion, exposing an int64 from g_get_real_time() would be the best
option, but wouldn't help on gtk+ side. The int type has only been kept for
some sort of compatibility with the original xsetting. So should we simplify
and opt for gtk+'s uint?

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

Matthias Clasen  changed:

   What|Removed |Added

 Attachment #365988|none|accepted-commit_now
 status||

--- Comment #3 from Matthias Clasen  ---
Review of attachment 365988:

::: plugins/xsettings/gsd-xsettings-manager.c
@@ +81,3 @@
+""
+"  "
+""

Should maybe be 'u' instead of 'i' ?

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #2 from Matthias Clasen  ---
Thanks for working on this!

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[Wayland-bugs] [Bug 786694] wayland: fix fontconfig monitoring

[gnome-settings-daemon]

https://bugzilla.gnome.org/show_bug.cgi?id=786694

--- Comment #1 from Martin Blanchard  ---
Created attachment 365988
  --> https://bugzilla.gnome.org/attachment.cgi?id=365988=edit
Introduce org.gnome.SettingsDaemon.FontConfig

Timestamp is exposed as the 'ConfigTimestamp' property of a (new) 
org.gnome.SettingsDaemon.FontConfig dbus interface. 'PropertiesChanged', from
org.freedesktop.DBus.Properties, is emitted on update.

It feels wrong to implement this in the xsettings plugin. Think it deserves a
dedicated plugin; xsettings could rely on this new one. But needs more work...

Comments and feedbacks welcome.

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