first Qt-based client version

Refs #68886

Change-Id: I69b44506dc52a18c47f102466472c68fbf08600b
diff --git a/mainwindow.cpp b/mainwindow.cpp
new file mode 100644
index 0000000..69d4679
--- /dev/null
+++ b/mainwindow.cpp
@@ -0,0 +1,73 @@
+/***************************************************************************
+ * Copyright (C) 2011-2015 by Savoir-Faire Linux                           *
+ * Author: Edric Ladent Milaret <edric.ladent-milaret@savoirfairelinux.com>*
+ *                                                                         *
+ * 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/>.   *
+ **************************************************************************/
+
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include <QSizeGrip>
+
+MainWindow::MainWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+
+    this->setWindowFlags(Qt::CustomizeWindowHint);
+    this->setWindowFlags(Qt::FramelessWindowHint);
+
+    QIcon icon(":/ring.png");
+
+    this->setWindowIcon(icon);
+
+    sysIcon_.setIcon(icon);
+    sysIcon_.show();
+
+    connect(&sysIcon_, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
+            this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));
+
+    navStack_ = new NavStack(ui->bar, ui->stackedWidgetView, this);
+    ui->verticalLayout_2->addWidget(
+                new QSizeGrip(this), 0, Qt::AlignBottom | Qt::AlignRight);
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+void
+MainWindow::mousePressEvent(QMouseEvent *evt)
+{
+    oldPos_ = evt->globalPos();
+}
+
+void
+MainWindow::mouseMoveEvent(QMouseEvent *evt)
+{
+    if(evt->buttons() & Qt::LeftButton) {
+        const auto delta = evt->globalPos() - oldPos_;
+        move(x() + delta.x(), y() + delta.y());
+        oldPos_ = evt->globalPos();
+    }
+}
+
+void
+MainWindow::trayActivated(QSystemTrayIcon::ActivationReason reason) {
+    if (reason != QSystemTrayIcon::ActivationReason::Context)
+        this->show();
+}