The main GDK thread lock is not portable and deprecated.
The only reason why gdk_threads_add_timeout() and
gdk_threads_add_timeout_full() exist is to allow invoking a callback
with the GDK lock held, in case 3rd party libraries still use the
deprecated gdk_threads_enter()/gdk_threads_leave() API.
Since we're removing the GDK lock, and we're releasing a new major API,
such code cannot exist any more; this means we can use the GLib API for
installing timeout callbacks.
https://bugzilla.gnome.org/show_bug.cgi?id=793124
g_list_model_get_item is transfer full, so we need
to drop the references we get from it. This was showing
up while testing the GL texture cache in GtkGLArea.
Add a way to toggle debug output on and off
from the inspector. For now, we don't add a
log viewer here, since that has the risk of
deadlock until we've the logging completely
separated by display, and also requires us
to install a log writer function, which
libraries are not supposed to do.
As far as possible, use per-display debug flags.
This will minimize the debug spew that we get from
the inspector if it is running on a separate display.
There are too many stack elements in the main stack. So add a substack
for the pages that display common global state. The appropriate name I
found for it was "Global".
It's used to house the General, Visual, Resources and Statistics pages
for now.
Instead, add a function gtk_image_set_icon_size() for the cases where
overriding the icon size is necessary.
Treat icon sizes the same way as pixel sizes, too. So gtk_image_clear()
no longer unsets the icon size.
Change constructors to reflect that.
While doing so, also add a fallback argument to the cursor constructors,
so it is now possible to create cursors with fallback.
Move the default pos of the Paned handle to 400px from the left, i.e.
50% of the default width of the window. The previous position at 300px
from left meant the node treeview was too narrow & could easily result
in the (useful) State column not being visible in the case of many
apps. The properties pane doesn't need to be as big as it was anyway.
https://bugzilla.gnome.org/show_bug.cgi?id=788898
The copy of the PangoGlyphString we do here was showing up
in some profiles. To avoid it, allocate the PangoGlyphInfo array
as part of the node itself. Update all callers to deal with
the slight api change required for this.
Rename the surface getter to peek, following other render
node getters, and make the surface-based constructor private,
since it is not something we want to encourage.
Update all callers.