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/*
* Copyright © 2018 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkrootprivate.h"
#include "gtknative.h"
#include "gtknativeprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkwidgetprivate.h"
#include "gdk/gdkprivate.h"
#include "gtkprivate.h"
#include "gtkshortcutmanager.h"
/**
* GtkRoot:
*
* An interface for widgets that can act as the root of a widget hierarchy.
*
* The root widget takes care of providing the connection to the windowing
* system and manages layout, drawing and event delivery for its widget
* hierarchy.
*
* The obvious example of a `GtkRoot` is `GtkWindow`.
*
* To get the display to which a `GtkRoot` belongs, use
* [method@Gtk.Root.get_display].
*
* `GtkRoot` also maintains the location of keyboard focus inside its widget
* hierarchy, with [method@Gtk.Root.set_focus] and [method@Gtk.Root.get_focus].
*/
G_DEFINE_INTERFACE_WITH_CODE (GtkRoot, gtk_root, GTK_TYPE_WIDGET,
g_type_interface_add_prerequisite (g_define_type_id, GTK_TYPE_NATIVE))
static GdkDisplay *
gtk_root_default_get_display (GtkRoot *self)
{
return gdk_display_get_default ();
}
static GtkConstraintSolver *
gtk_root_default_get_constraint_solver (GtkRoot *self)
{
return NULL;
}
static GtkWidget *
gtk_root_default_get_focus (GtkRoot *self)
{
return NULL;
}
static void
gtk_root_default_set_focus (GtkRoot *self,
GtkWidget *focus)
{
}
static void
gtk_root_default_init (GtkRootInterface *iface)
{
iface->get_display = gtk_root_default_get_display;
iface->get_constraint_solver = gtk_root_default_get_constraint_solver;
iface->get_focus = gtk_root_default_get_focus;
iface->set_focus = gtk_root_default_set_focus;
}
/**
* gtk_root_get_display:
* @self: a `GtkRoot`
*
* Returns the display that this `GtkRoot` is on.
*
* Returns: (transfer none): the display of @root
*/
GdkDisplay *
gtk_root_get_display (GtkRoot *self)
{
GtkRootInterface *iface;
g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
iface = GTK_ROOT_GET_IFACE (self);
return iface->get_display (self);
}
GtkConstraintSolver *
gtk_root_get_constraint_solver (GtkRoot *self)
{
GtkRootInterface *iface;
g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
iface = GTK_ROOT_GET_IFACE (self);
return iface->get_constraint_solver (self);
}
/**
* gtk_root_set_focus:
* @self: a `GtkRoot`
* @focus: (nullable): widget to be the new focus widget, or %NULL
* to unset the focus widget
*
* If @focus is not the current focus widget, and is focusable, sets
* it as the focus widget for the root.
*
* If @focus is %NULL, unsets the focus widget for the root.
*
* To set the focus to a particular widget in the root, it is usually
* more convenient to use [method@Gtk.Widget.grab_focus] instead of
* this function.
*/
void
gtk_root_set_focus (GtkRoot *self,
GtkWidget *focus)
{
g_return_if_fail (GTK_IS_ROOT (self));
g_return_if_fail (focus == NULL || GTK_IS_WIDGET (focus));
GTK_ROOT_GET_IFACE (self)->set_focus (self, focus);
}
/**
* gtk_root_get_focus:
* @self: a `GtkRoot`
*
* Retrieves the current focused widget within the root.
*
* Note that this is the widget that would have the focus
* if the root is active; if the root is not focused then
* `gtk_widget_has_focus (widget)` will be %FALSE for the
* widget.
*
* Returns: (nullable) (transfer none): the currently focused widget
*/
GtkWidget *
gtk_root_get_focus (GtkRoot *self)
{
g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
return GTK_ROOT_GET_IFACE (self)->get_focus (self);
}
void
gtk_root_start_layout (GtkRoot *self)
{
gtk_native_queue_relayout (GTK_NATIVE (self));
}
void
gtk_root_stop_layout (GtkRoot *self)
{
}
void
gtk_root_queue_restyle (GtkRoot *self)
{
gtk_root_start_layout (self);
}
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