Adds support for creating scroll events from Wayland tablet wheel events.
Even though no Wacom tablet puck has a smooth-scrolling wheel, both event
types need to be generated to make the upper layers happy.
https://bugzilla.gnome.org/show_bug.cgi?id=783716
If a tablet device is used to perform actions like window moving or resizing,
GTK must provide the correct implicit grab serial number over Wayland to Mutter
in order for the action to succeed. This commit adds tablet support to the
implicit serial getters.
https://bugzilla.gnome.org/show_bug.cgi?id=777333
Since gtk_bin_add does a gtk_widget_set_parent call, we cannot use it in
a GtkBin implementation that has multiple child widgets and cares about
their order.
If a bad behaving application tries to make the window/display beep too
often, throttle the beep requests so that we don't end up filling the
Wayland socket queue.
The throttle is set to 50 beeps per second, which far more beeps than
will ever make any sense from a user experience point of view, but will
avoid terminating due to an excessive amount of requests.
https://bugzilla.gnome.org/show_bug.cgi?id=778188
So we can avoid creating a GtkCssPathNode in _init and then throwing it
away right after when using the _new_with_node constructor, which is the
one we use for all widgets.
Don't set the have_focused field of the window's toplevel to TRUE by
default and don't set the FOCUSED state in gdk_window_map. This a means
toplevel window's state is what the WM expects, and the FOCUSED state
will be set anyway when we map the window and receive a _NET_WM_STATE
message.
Since setting a clip is mandatory for almost all widgets, we can as well
change the size-allocate signature to include a out_clip parameter, just
like GtkCssGadget did. And since we now always propagate baselines, we
might as well pass that one on to size-allocate.
This way we can also make sure to transform the clip returned from
size-allocate to parent-coordinates, i.e. the same coordinate space
priv->allocation is in.
Remove the special case in gtkwidget.c where we didn't draw any css
background/border for popovers. Instead, rely on themes to not style the
popover node and add a contents gizmo that gets the actual css styling.
We then requeste enough space for the popover to draw both the contents
and the arrow on the side.
