wayland: Explicitly require RGBA8888

See merge request !944

Its the format we expect to have. If we want to
support 10-bit visuals at some point, that should
be an explicit decision.

Matthiasc for master

See merge request !943

The inspector is no longer using this
list model, so drop the api.

Popovers are now regular children in the widget
tree, no need to duplicate them as toplevels
in the object tree.

Action state updates may not always be precise.

Matthiasc for master

See merge request !942

Ths api exposes too much of the internal
action muxer setup; we want to add actions
to the muxer without an action group.

We create this action group ourselves,
we can keep track of it.

We create this action group ourselves,
we can keep track of it.

We can leave it up to apps to not set less-than-useful
combinations, such as show-emoji-icon, but a no-emoji
input hint.

This function was added just for the inspector,
and is not used there anymore. Drop it.

Instead of iterating action groups manually,
just show what the action muxer provides. This
gives an accurate view of what actions are
available in a widgets context, and saves us
the trouble of juggling prefixes manually.

Instead of duplicating this code in multiple places,
add an api to look up an action group for a prefixed
name, and return the unprefixed name at the same time.

Pass the action name along, so we can put
it in log messages.

cherry-pick of commit e56a9e6c

Close #1949

profiler: add profiler marks for surface event delivery

See merge request !934

This gives us marks to track the duration of processing certain types of
GdkEvent. It also provides some basic struct information in cases where
having that information would likely be useful for debugging.

Slightly ease page range entry in PrintUnixDialog

Closes #591

See merge request !922

Page ranges entry can now be focused directly, and will automatically
select the page ranges button when doing so.
This avoids the sometimes counter-intuitive previous behavior where the
entry was automatically focused when toggling the radio button, but the
user may still find themselves clicking uselessly in the text entry
because they scheduled it in their mental model.

The attempt to drop it in 6a669265
was incomplete, and non-working.

We were using menubuttons here in a way that
does not work anymore. Make it work again.

Message dialog title

See merge request !894

Instead, use a new title style class to let
themes influence title formatting. Note that
the theme style will be overridden if the
application uses markup for presentation,
such as <b> or <i>.

context menu api

See merge request !539

Make the color chooser use a popover menu
and actions.

Redo the context menu on the page1 text view in
terms of actions.

Port this from ::populate-popup to the new context
menu api. At the same time, fix some parts of the demo
that were broken since it was changed to use GtkStearchEntry.