wifi: Add HotSpot QR code support

When wifi hotspots are created generate a QR code
so that supported devices can connect to the hotspot
by simply scanning the QR code image

panels/network/cc-qr-code.h

@@ -0,0 +1,43 @@
+/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*- */
+/* cc-qr-code.h
+ *
+ * Copyright 2019 Purism SPC
+ *
+ * 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 3 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/>.
+ *
+ * Author(s):
+ *   Mohammed Sadiq <sadiq@sadiqpk.org>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <glib-object.h>
+#include <cairo.h>
+
+G_BEGIN_DECLS
+
+#define CC_TYPE_QR_CODE (cc_qr_code_get_type ())
+
+G_DECLARE_FINAL_TYPE (CcQrCode, cc_qr_code, CC, QR_CODE, GObject)
+
+CcQrCode        *cc_qr_code_new         (void);
+gboolean         cc_qr_code_set_text    (CcQrCode    *self,
+                                         const gchar *text);
+cairo_surface_t *cc_qr_code_get_surface (CcQrCode    *self,
+                                         gint         size,
+                                         gint         scale);
+
+G_END_DECLS