[gtk/wip/otte/boxes: 5/20] gtk: Add the GtkRoot interface



commit 2c9c43545fc3ebba9d24229f24c9bca87e45fdc5
Author: Benjamin Otte <otte redhat com>
Date:   Fri Apr 6 20:21:06 2018 +0200

    gtk: Add the GtkRoot interface
    
    So far, this doesn't do anything.

 gtk/gtk.h       |  1 +
 gtk/gtkroot.c   | 44 ++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkroot.h   | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtktypes.h  |  1 +
 gtk/meson.build |  2 ++
 5 files changed, 101 insertions(+)
---
diff --git a/gtk/gtk.h b/gtk/gtk.h
index c79f1a9dfb..368ce0ca69 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -176,6 +176,7 @@
 #include <gtk/gtkrecentmanager.h>
 #include <gtk/gtkrender.h>
 #include <gtk/gtkrevealer.h>
+#include <gtk/gtkroot.h>
 #include <gtk/gtkscale.h>
 #include <gtk/gtkscalebutton.h>
 #include <gtk/gtkscrollable.h>
diff --git a/gtk/gtkroot.c b/gtk/gtkroot.c
new file mode 100644
index 0000000000..3eecc97ec6
--- /dev/null
+++ b/gtk/gtkroot.c
@@ -0,0 +1,44 @@
+/*
+ * 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 "gtkroot.h"
+
+/**
+ * SECTION:root
+ * @Title: GtkRoot
+ * @Short_description: Root widgets
+ * @See_also: #GtkWindow
+ *
+ * #GtkRoot is the interface implemented by all widgets that can act as a toplevel
+ * widget to a hierarchy of widgets. 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.
+ */
+
+G_DEFINE_INTERFACE (GtkRoot, gtk_root, GTK_TYPE_WIDGET)
+
+static void
+gtk_root_default_init (GtkRootInterface *iface)
+{
+}
+
diff --git a/gtk/gtkroot.h b/gtk/gtkroot.h
new file mode 100644
index 0000000000..e4894ee46b
--- /dev/null
+++ b/gtk/gtkroot.h
@@ -0,0 +1,53 @@
+/*
+ * 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>
+ */
+
+#ifndef __GTK_ROOT_H__
+#define __GTK_ROOT_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gdk/gdk.h>
+#include <gtk/gtkwidget.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_ROOT               (gtk_root_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_INTERFACE (GtkRoot, gtk_root, GTK, ROOT, GtkWidget)
+
+/**
+ * GtkRootIface:
+ *
+ * The list of functions that must be implemented for the #GtkRoot interface.
+ */
+struct _GtkRootInterface
+{
+  /*< private >*/
+  GTypeInterface g_iface;
+
+  /*< public >*/
+};
+
+
+G_END_DECLS
+
+#endif /* __GTK_ROOT_H__ */
diff --git a/gtk/gtktypes.h b/gtk/gtktypes.h
index fc58058821..5d1218f189 100644
--- a/gtk/gtktypes.h
+++ b/gtk/gtktypes.h
@@ -39,6 +39,7 @@ typedef struct _GtkClipboard         GtkClipboard;
 typedef struct _GtkEventController     GtkEventController;
 typedef struct _GtkGesture             GtkGesture;
 typedef struct _GtkRequisition        GtkRequisition;
+typedef struct _GtkRoot               GtkRoot;
 typedef struct _GtkSelectionData       GtkSelectionData;
 typedef struct _GtkSettings            GtkSettings;
 typedef GdkSnapshot                    GtkSnapshot;
diff --git a/gtk/meson.build b/gtk/meson.build
index 3ebb1b5867..558232b9e7 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -314,6 +314,7 @@ gtk_public_sources = files([
   'gtkrendericon.c',
   'gtkrendernodepaintable.c',
   'gtkrevealer.c',
+  'gtkroot.c',
   'gtkroundedbox.c',
   'gtkscale.c',
   'gtkscalebutton.c',
@@ -551,6 +552,7 @@ gtk_public_headers = files([
   'gtkrecentmanager.h',
   'gtkrender.h',
   'gtkrevealer.h',
+  'gtkroot.h',
   'gtkscale.h',
   'gtkscalebutton.h',
   'gtkscrollable.h',


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