Remove a boatload of "or %NULL" from nullable parameters
and return values. gi-docgen generates suitable text from
the annotation that we don't need to duplicate.
This adds a few missing nullable annotations too.
Remove all the old 2.x and 3.x version annotations.
GTK+ 4 is a new start, and from the perspective of a
GTK+ 4 developer all these APIs have been around since
the beginning.
Instead of issuing g_warning, fill the provided GError.
This lets us test this error handling, and is the right
thing to do. Use the new GtkBuilder helpers and
g_markup_collect_attributes to do so.
Without this information introspection-based consumers don't realize
they can include context information, but instead think that they
receive an extra gpointer argument (which they don't know how to
handle).
https://bugzilla.gnome.org/show_bug.cgi?id=730745
Use g_string_assign to avoid issues with assigning GString's internal
buffer back to the same string. This can happen when no translations are
available and _gtk_builder_parser_translate returns back the same
pointer that was passed in.
This fixes a regression from commit e9f182e37a
that caused GtkComboBoxText <items> from GtkBuilder to show up empty if
no translations are available.
https://bugzilla.gnome.org/show_bug.cgi?id=700629
Pointed out in https://bugzilla.gnome.org/show_bug.cgi?id=699016
The fix here is slightly different. We make
_gtk_builder_parser_translate return a const char * instead of
a dup'ed string, and fix up the callers.
I've decided that it is isn't feasible to make cell areas runtime-settable
in the time we have left before 3.0, therefore, I'm going with the
approach to allow init() functions to instantiate the default cell area
and issue a warning if a construct property is ignored.
This is not ideal, but it keeps existing icon view and combo box
subclasses working.
https://bugzilla.gnome.org/show_bug.cgi?id=639139
The fact that GtkCellLayout was checking "if (gtk_cell_layout_get_area (layout))"
and executing code contitionally from the apis instead of simply falling
back to the default implementation for these things was causing problems
in language bindings such as gtkmm... Regardless, the implementation
is cleaner this way too.
Added _gtk_cell_area_set_cell_data_func_with_proxy() to be called by
gtk_cell_layout_set_cell_data_func() when the layouting object itself
is not the underlying cell area.
Mention that it's safe to use <cell-packing> tag for any GtkCellLayout
in GTK+ since they *all* use an underlying GtkCellArea (at least they
will once the other branches land).
Since GtkCellArea delegate does all the work, cell layout widgets
who use a GtkCellArea internally only have to implement the _get_area()
method, this just reduces code to forward the calls over the the internal
cell area.
