Add missing file (amend 70ad205bc1)

libs/gtkmm2ext/cairo_theme.cc

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2011-2016 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2021 Robin Gareus <robin@gareus.org>
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "gtkmm2ext/cairo_theme.h"
+
+using namespace Gtkmm2ext;
+
+bool CairoTheme::_flat_buttons    = false;
+bool CairoTheme::_boxy_buttons    = false;
+bool CairoTheme::_widget_prelight = true;
+
+void
+CairoTheme::set_flat_buttons (bool yn)
+{
+	_flat_buttons = yn;
+}
+
+void
+CairoTheme::set_boxy_buttons (bool yn)
+{
+	_boxy_buttons = yn;
+}
+
+void
+CairoTheme::set_widget_prelight (bool yn)
+{
+	_widget_prelight = yn;
+}