If the revealer is told do animate and then unrealize itself, we do
(correctly) stop the animation, but used to do a shortcut where we
just set the target state as current.
Other things are dependent on the animation properly finishing though,
like the contained widget child visibility. This may lead to inconsistent
state where gtk_revealer_get_child_revealed() returns TRUE but the child
widget is unmapped, or vice-versa.
Fully finish the animation here, so the child state is coherent the next
time the revealer is mapped. We can also skip notifying on the property
since it will be handled by gtk_revealer_set_position().
Closes: https://gitlab.gnome.org/GNOME/gnome-control-center/issues/316
If the child is not (partly) revealed, don’t allocate it, or we spam the
console with warnings about giving negative width to children’s gadgets.
We can check :child-visible, which is FALSE if (current&target)_pos == 0
Close https://gitlab.gnome.org/GNOME/gtk/issues/1057
Also, "ie" wasn't very clear, but fixing that to "i.e." would cause
truncation of the summary when processed by bindings using doxygen. So,
I replaced it with "in other words", which is no _less_ clear, at least.
Depending of float rounding during target calculation, the size of the
GtkRevealer can be set to zero will the animation is not finished.
If the GtkRevealer is in a GtkPaned, it will be hidden and so the animation
will be stopped before it is finished.
In this case, force the emission of the child-revealed signal to let
client code know the animation is finished.
https://bugzilla.gnome.org/show_bug.cgi?id=765973
If animations are disabled, the only difference we need to make is that
we don't have to start the transition. Size requests should remain the
same.
https://bugzilla.gnome.org/show_bug.cgi?id=762996
... if the child is concealed and the transition type is set to NONE.
In this case, both preferred width and preferred height should be 0, but
we still can't use that to allocate a size for the child, so care about
the minimum size of the child in gtk_revealer_get_child_allocation.
https://bugzilla.gnome.org/show_bug.cgi?id=761760
These days exposure happens only on the native windows (generally the
toplevel window) and is propagated down recursively. The expose event
is only useful for backwards compat, and in fact, for double buffered
widgets we totally ignore the event (and non-double buffering breaks
on wayland).
So, by not setting the mask we avoid emitting these events and then
later ignoring them.
We still keep it on eventbox, fixed and layout as these are used
in weird ways that want backwards compat.
When animation is disabled, we use 'none' as the effective
transition type. So far, this transition type failed to change
the size request, causing the revealer to always take up the
space of the child, even when the child is not shown.
https://bugzilla.gnome.org/show_bug.cgi?id=719568
-Avoid defining variables in the middle of the block
-Include fallback-c89.c in gtkrevealer.c in place of math.h as
fallback-c89.c includes math.h itself, and is needed for round()
