Add screen utilities for screen and center widget on screen

src/utilities/screenutils.cpp

@@ -0,0 +1,52 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2023, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry 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.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <QGuiApplication>
+#include <QWidget>
+#include <QScreen>
+#include <QWindow>
+
+#include "screenutils.h"
+
+namespace Utilities {
+
+QScreen *GetScreen(QWidget *widget) {
+
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
+  QScreen *screen = widget->screen();
+#else
+  QScreen *screen = (widget->window() && widget->window()->windowHandle() ? widget->window()->windowHandle()->screen() : nullptr);
+#endif
+
+  return screen;
+
+}
+
+void CenterWidgetOnScreen(QScreen *screen, QWidget *widget) {
+
+  if (screen) {
+    const QRect sr = screen->availableGeometry();
+    const QRect wr({}, widget->size().boundedTo(sr.size()));
+    widget->resize(wr.size());
+    widget->move(sr.center() - wr.center());
+  }
+
+}
+
+}  // namespace Utilities