Widgets: rename & cleanup

src/CalcWindow.cpp

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2020-2021, The Monero Project.
+
+#include "CalcWindow.h"
+#include "ui_CalcWindow.h"
+
+#include "utils/AppData.h"
+#include "utils/Icons.h"
+
+CalcWindow::CalcWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::CalcWindow)
+{
+    Qt::WindowFlags flags = this->windowFlags();
+    this->setWindowFlags(flags|Qt::WindowStaysOnTopHint); // on top
+
+    ui->setupUi(this);
+    this->setWindowIcon(icons()->icon("gnome-calc.png"));
+}
+
+void CalcWindow::closeEvent(QCloseEvent *foo) {
+    emit closed();
+}
+
+CalcWindow::~CalcWindow() = default;