We can use gdk_window_peek_children here, instead of copying
the list. Note that we preserve the bottom-to-top ordering by
iterating the list from the end.
gdk_window_get_children_with_user_data was doing a list
reversal while filtering the list.
The default event bubbling paths are prone to just running event controllers
even after the widget was potentially unrealized/destroyed in an event
handler callback, so bail out early if that's the case.
https://bugzilla.gnome.org/show_bug.cgi?id=755352
It makes no sense to skip denied sequences here, the gestures are
still carrying out the accounting for these, which must be also put
to an end if we're possibly not receiving any further events from
this sequence.
https://bugzilla.gnome.org/show_bug.cgi?id=754098
At the time event_check_cancel_sequence_on_hierarchy() is called, the widget
has been already unparented. Given the widget itself is being destroyed,
cancellation on it is impending in one way or another, we still must
propagate cancellation across all parents, so retrieve it early before
possible widget destruction.
https://bugzilla.gnome.org/show_bug.cgi?id=754098
The GtkEventController event mask is private, and set early by GtkGesture
implementations. Being this private data, there is no corresponding
property, so this code is a no-op, there is just no need to listen to
changes there.
We use to rely on grab broken events for most of the event sequence
lifetime, this breaks though on GDK_BUTTON_RELEASE/GDK_TOUCH_END, as there's
no longer a grab at that time.
For these cases (and all others where there's destroy/unrealize calls
involved during event dispatching), catch this on the late
WIDGET_REALIZED_FOR_EVENT calls on widget event handling functions.
https://bugzilla.gnome.org/show_bug.cgi?id=754098
This avoids a lot of overhead in the common case where a signal
is not connected and we're just using the class vfunc (which is true
for all in-libgtk widgets). Additionally it makes backtraces in
debuggers and profiles much much nicer to look at.
https://bugzilla.gnome.org/show_bug.cgi?id=754986
Merge it into GtkWidgetPrivate. In my measurements, about half
of all widgets have a non-default auxinfo struct, and we use this
information in size allocation, so it is nice to avoid the gdata
overhead.
We only use widget paths for a few widgets nowadays (notebook,
treeview, pathbar, combobox), so we can save some space by
not having this field in GtkWidgetPrivate.
The hash table is only accessed at creation and destruction time,
and many widgets don't use templates at all, so no need to have
this permanently occupying space.
This reverts commit 3eacfa88f2.
Apart from the patch not being correct, we don't want to expose private
structures in header files if we can avoid it.
And this type-checking overhead is not an optimization that is even
measurable.
https://bugzilla.gnome.org/show_bug.cgi?id=754932
The logic here is that G_ENABLE_DEBUG is for compiling out
debug spew that can be triggered at runtime with the GTK_DEBUG
environment variable, while G_ENABLE_CONSISTENCY_CHECKS is for
consistency checks that are applied unconditionally.
For all other events, we run the bubble phase deep in the specific
::motion/button-press/release/touch handlers.
For touchpad events, it doesn't make sense to use GtkWidgetClass
slots if the intended way to deal with these are gestures, so we
run the bubble phase directly from gtk_widget_event_internal().
Properties like transition-property might change when hovering over
something, even if the property itself does not change. These properties
don't affect drawing, so don't queue redraws for them.
