Layout managers needs a way to store properties that control the layout
policy of a widget; typically, we used to store these in GtkContainer's
child properties, but since GtkLayoutManager is decoupled from the
actual container widget, we need a separate storage. Additionally, child
properties have their own downsides, like requiring a separate, global
GParamSpecPool storage, and additional lookup API.
GtkLayoutChild is a simple GObject class, which means you can introspect
and document it as you would any other type.
We can use a constructor property for existing container widgets with
a layout policy, and move the layout policy implementation out of the
widget itself and into a LayoutManager subclass.
We delegate the size request mode, the measuring, and the allocation of
a widget through a GtkLayoutManager instance, if one has been attached
to the widget; otherwise, we fall back to the widget's own implementation.
A base abstract class for layout manager delegate objects.
Layout managers are associated to a single widget, like event
controllers, and are responsible for measuring and allocating the
children of the widget they are bound to.
Otherwise we're getting warnings about allocating a widget we haven't
measured first, which is fair. The contents gizmo itself will later take
care about whether or not the real popover child is NULL.
We were not paying enough attention to detail when updating
hover and focus state while generating crossing events. The
invariant that we need to preserve here is that when a widget
has focus or hover, its parent does too.
We basically don't have child surfaces anymore (the last
use in popovers is on the way out). This really needs
to be done in terms of widgets, not surfaces. For now,
just stop walking parent surfaces.
When the window gets active / inactive, we
don't propagate events, but just send focus-in / -out
to the current focus_widget. Improve this by updating
its state flags as well.
We were walking the parent chain here, which now
always needs to consider whether it should stop
at roots. Like this one should.
The symptom was that a label with a popup attached to
it would end up with an unintentional focus ring that
would not go away.
Refactor the child allocation machinery, so that the complex allocation
paths are only run when the animation is running.
And in particular, ensure that when no animation is running, the
identity transform is allocated.
When dealing with subclasses of GtkEntry, we were not
getting the property offset that is stored on the GtkEntry
type.
This was showing up as criticals when trying to set
::width-chars on a GtkFileChooserEntry.
This is named gdkconstructor.h to avoid any possible conflicts. This fixes
the current usages of G_HAS_CONSTRUCTORS, as that header is not installed
by glib.
Add boolean properties, is-pointer-focus and
contains-pointer-focus, that track whether the pointer
is in the widget itself or in one of its descendants.
The ::enter and ::leave signals get emitted up and down the
connecting path between the old an the new pointer location.
The signals are less useful if you can't find out where along
the path you are. That is what crossing mode and detail are
about, so add those to the signals.
It does not exist anymore. I'm removing this code now
because our CI tests are using xim and fail due to this.
Eventually, this code should be ported to use a popover.
