After commit ffef28a7e8,
gtk-icon-browser was spewing critical warnings when
changing sections. Avoid that by respecting the return
value of gtk_tree_model_get_iter.
BTN_STYLUS3 is defined by the Linux 4.15 kernel and is sent when the
third button on a stylus is pressed. At the moment, only Wacom's "Pro
Pen 3D" has three stylus buttons. Pressing this button triggers a button
8 event to be sent under X11, so we use the same mapping here.
https://bugzilla.gnome.org/show_bug.cgi?id=790033
GtkGesture is a GtkEventController. gtk_event_controller_dispose() calls
_gtk_widget_remove_controller(). That NULLs the pointer-to-Controller in
our EventControllerData but does not delete said ECData from our GList.
Subsequently, if that same Widget gets unparent()ed, that method calls
unset_state_flags(), which leads to doing reset_controllers() if we are
insensitive. Now, unlike most most other loops over the GList of ECData,
reset_controllers() does not skip nodes whose pointer-to-Controller is
NULL. So, we call gtk_event_controller_reset(NULL) and get a CRITICAL.
This surfaced in a gtkmm program. The Gesture is destroyed before the
Widget. The Widget then gets dispose()d, which calls unparent()… boom.
I didn’t find an MCVE yet but would hope this logic is correct anyway:
The simplest fix is to make the loop in gtk_widget_reset_controllers()
skip GList nodes with a NULL Controller pointer, like most other such
loops, so we avoid passing the NULL to gtk_event_controller_reset().
In other, live cases, _gtk_widget_run_controllers() loops over the GList
and removes/frees nodes having NULL Controllers, so that should suffice.
But this clearly was not getting a chance to happen in the failing case.
https://bugzilla.gnome.org/show_bug.cgi?id=792624
Filter models rely on views taking a ref on every node
they care about. GtkIconView was not doing that. Amazingly,
this has never shown up in a bug so far, until I spotted
the fallout in gnome-font-viewer.
Test that filter models propagate ::row-changed if there is
an external reference on the node, and not otherwise. This
is showing up in buggy icon view behaviour, where the icon
view is not redrawing if the content changes in a model that
is below a filter model.
We must notify the font and font-desc properties when the
list selection changes, and return NULL values for them
when there is no selection in the list.
We were failing to change the sort order for the
default sort column in some cases. Fix that, and
add a testcase for this issue.
https://bugzilla.gnome.org/show_bug.cgi?id=792459
Add a testcase for the previous fix
Some emoji fonts (such as Emoji One), render Emoji sequences
such as some of the family variations using multiple individual
glyphs. This rendering is too wide and breaks our grid layout.
Therefore, we will just skip any sequence whose rendering is
more than twice as wide as a simple smiley.
