Renamed views_qtwidgets/ into qtwidgets/views/

As there will be some files that are specific to QtWidgets and
but aren't views

src/qtwidgets/views/Frame_qtwidgets.h

@@ -0,0 +1,61 @@
+/*
+  This file is part of KDDockWidgets.
+
+  SPDX-FileCopyrightText: 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+  Author: Sérgio Martins <sergio.martins@kdab.com>
+
+  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include "View_qtwidgets.h"
+#include "views/Frame.h"
+
+namespace KDDockWidgets::Controllers {
+class Frame;
+}
+
+namespace KDDockWidgets::Views {
+
+class DOCKS_EXPORT Frame_qtwidgets : public View_qtwidgets<QWidget>, public Frame
+{
+    Q_OBJECT
+public:
+    explicit Frame_qtwidgets(Controllers::Frame *controller, QWidget *parent = nullptr);
+    void init() override;
+
+    void setLayoutItem(Layouting::Item *item) override;
+
+    void renameTab(int index, const QString &) override;
+    void changeTabIcon(int index, const QIcon &) override;
+    void removeWidget_impl(Controllers::DockWidget *) override;
+    int indexOfDockWidget_impl(const Controllers::DockWidget *) override;
+    int currentIndex_impl() const override;
+    void setCurrentTabIndex_impl(int index) override;
+    void setCurrentDockWidget_impl(Controllers::DockWidget *) override;
+    void insertDockWidget_impl(Controllers::DockWidget *, int index) override;
+    Controllers::DockWidget *dockWidgetAt_impl(int index) const override;
+    Controllers::DockWidget *currentDockWidget_impl() const override;
+    int nonContentsHeight() const override;
+
+    Controllers::Frame *frame() const;
+    QRect dragRect() const override;
+
+Q_SIGNALS:
+    void layoutInvalidated();
+
+protected:
+    void free_impl() override;
+    void paintEvent(QPaintEvent *) override;
+    QSize maxSizeHint() const override;
+
+private:
+    void closeEvent(QCloseEvent *e) override;
+    bool event(QEvent *) override;
+    Controllers::Frame *const m_controller;
+};
+
+}