[gnome-contacts] AvatarDialog: fix #138 crash when taking a webcam picture

[Niels De Graef <nielsdg src gnome org>]

commit 8bcb75001ad5c8b0be1ae200fc1b77e198b5155c
Author: Julian Sparber <julian sparber net>
Date:   Tue Jul 9 10:27:39 2019 +0200

    AvatarDialog: fix #138 crash when taking a webcam picture
    
    Since get cheese_widget_get_camera () and get_video_area () are not
    defined static they are are exported but we don't have the function
    signature, therefore this adds the header file with the function
    signatures.

 src/cheese-widget.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 vapi/cheese.vapi    |  5 +++--
 2 files changed, 60 insertions(+), 2 deletions(-)
---
diff --git a/src/cheese-widget.h b/src/cheese-widget.h
new file mode 100644
index 0000000..a422fe9
--- /dev/null
+++ b/src/cheese-widget.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2009 Bastien Nocera <hadess hadess net>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CHEESE_WIDGET_H_
+#define CHEESE_WIDGET_H_
+
+#include <glib-object.h>
+#include <gtk/gtk.h>
+#include <clutter/clutter.h>
+#include <clutter-gtk/clutter-gtk.h>
+
+G_BEGIN_DECLS
+
+#define CHEESE_TYPE_WIDGET (cheese_widget_get_type ())
+G_DECLARE_FINAL_TYPE (CheeseWidget, cheese_widget, CHEESE, WIDGET, GtkNotebook)
+
+GtkWidget *cheese_widget_new (void);
+void       cheese_widget_get_error (CheeseWidget *widget, GError **error);
+GObject   *cheese_widget_get_camera (CheeseWidget *widget);
+GtkWidget *cheese_widget_get_video_area (CheeseWidget *widget);
+
+
+/**
+ * CheeseWidgetState:
+ * @CHEESE_WIDGET_STATE_NONE: Default state, camera uninitialized
+ * @CHEESE_WIDGET_STATE_READY: The camera should be ready and the widget should be displaying the preview
+ * @CHEESE_WIDGET_STATE_ERROR: An error occurred while setting up the camera, check what went wrong with 
cheese_widget_get_error()
+ *
+ * Current #CheeseWidget state.
+ *
+ */
+typedef enum
+{
+  CHEESE_WIDGET_STATE_NONE,
+  CHEESE_WIDGET_STATE_READY,
+  CHEESE_WIDGET_STATE_ERROR
+} CheeseWidgetState;
+
+G_END_DECLS
+
+#endif /* CHEESE_WIDGET_H_ */
diff --git a/vapi/cheese.vapi b/vapi/cheese.vapi
index 46f95de..1faa347 100644
--- a/vapi/cheese.vapi
+++ b/vapi/cheese.vapi
@@ -24,12 +24,13 @@ namespace Cheese {
                READY,
                ERROR
        }
-       [CCode (cheader_filename = "cheese/cheese-widget.h")]
+       [CCode (cheader_filename = "cheese-widget.h")]
        public class Widget : Gtk.Widget {
                [CCode (has_construct_function = false, type = "CheeseWidget*")]
                public Widget ();
                public WidgetState state { get; }
-        public unowned GLib.Object get_camera ();
+               public unowned GLib.Object get_camera ();
+               public unowned Gtk.Widget get_video_area ();
        }
        [CCode (cheader_filename = "cheese/cheese-camera.h")]
        public class Camera : GLib.Object {