1 files changed, 47 insertions, 0 deletions

diff --git a/common/threadboundary.h b/common/threadboundary.h
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index 0000000..9881afa
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+++ b/common/threadboundary.h
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+/*
+ * Copyright (C) 2014 Christian Mollekopf <chrigi_1@fastmail.fm>
+ *
+ * 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) version 3, or any
+ * later version accepted by the membership of KDE e.V. (or its
+ * successor approved by the membership of KDE e.V.), which shall
+ * act as a proxy defined in Section 6 of version 3 of the license.
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include <QObject>
+#include <functional>
+
+namespace async {
+    /*
+     * A helper class to invoke a method in a different thread using the event loop.
+     * The ThreadBoundary object must live in the thread where the function should be called.
+     */
+    class ThreadBoundary : public QObject {
+        Q_OBJECT
+    public:
+        ThreadBoundary();
+        virtual ~ThreadBoundary();
+
+        //Call in worker thread
+        void callInMainThread(std::function<void()> f) {
+            QMetaObject::invokeMethod(this, "addValueInMainThread", Qt::QueuedConnection, QGenericReturnArgument(), Q_ARG(std::function<void()>, f));
+        }
+    public slots:
+        //Get's called in main thread by it's eventloop
+        void addValueInMainThread(std::function<void()> f) {
+            f();
+        }
+    };
+}