Move common code info FrameViewInterface

So it's not duplicated between QtWidgets and QtQuick

src/qtwidgets/views/Frame_qtwidgets.cpp

@@ -53,7 +53,7 @@ VBoxLayout::~VBoxLayout() = default;
 
 Frame_qtwidgets::Frame_qtwidgets(Controllers::Frame *controller, QWidget *parent)
     : View_qtwidgets<QWidget>(controller, Type::Frame, parent)
-    , m_controller(controller)
+    , FrameViewInterface(controller)
 {
 }
 
@@ -62,13 +62,13 @@ void Frame_qtwidgets::init()
     auto vlayout = new VBoxLayout(this);
     vlayout->setContentsMargins(0, 0, 0, 0);
     vlayout->setSpacing(0);
-    vlayout->addWidget(asQWidget(m_controller->titleBar()));
-    auto tabWidget = m_controller->tabWidget();
-    vlayout->addWidget(asQWidget(m_controller->tabWidget()));
+    vlayout->addWidget(asQWidget(m_frame->titleBar()));
+    auto tabWidget = m_frame->tabWidget();
+    vlayout->addWidget(asQWidget(m_frame->tabWidget()));
 
-    tabWidget->setTabBarAutoHide(!m_controller->alwaysShowsTabs());
+    tabWidget->setTabBarAutoHide(!m_frame->alwaysShowsTabs());
 
-    if (m_controller->isOverlayed())
+    if (m_frame->isOverlayed())
         setAutoFillBackground(true);
 }
 
@@ -81,65 +81,60 @@ void Frame_qtwidgets::free_impl()
 
 void Frame_qtwidgets::renameTab(int index, const QString &text)
 {
-    m_controller->tabWidget()->renameTab(index, text);
+    m_frame->tabWidget()->renameTab(index, text);
 }
 
 void Frame_qtwidgets::changeTabIcon(int index, const QIcon &icon)
 {
-    m_controller->tabWidget()->changeTabIcon(index, icon);
+    m_frame->tabWidget()->changeTabIcon(index, icon);
 }
 
 int Frame_qtwidgets::nonContentsHeight() const
 {
-    Controllers::TitleBar *tb = m_controller->titleBar();
-    QWidget *tabBar = asQWidget(m_controller->tabBar());
+    Controllers::TitleBar *tb = m_frame->titleBar();
+    QWidget *tabBar = asQWidget(m_frame->tabBar());
 
     return (tb->isVisible() ? tb->height() : 0) + (tabBar->isVisible() ? tabBar->height() : 0);
 }
 
 int Frame_qtwidgets::indexOfDockWidget_impl(const Controllers::DockWidget *dw)
 {
-    return m_controller->tabWidget()->indexOfDockWidget(dw);
+    return m_frame->tabWidget()->indexOfDockWidget(dw);
 }
 
 void Frame_qtwidgets::setCurrentDockWidget_impl(Controllers::DockWidget *dw)
 {
-    m_controller->tabWidget()->setCurrentDockWidget(dw);
+    m_frame->tabWidget()->setCurrentDockWidget(dw);
 }
 
 int Frame_qtwidgets::currentIndex_impl() const
 {
-    return m_controller->tabWidget()->currentIndex();
+    return m_frame->tabWidget()->currentIndex();
 }
 
 void Frame_qtwidgets::insertDockWidget_impl(Controllers::DockWidget *dw, int index)
 {
-    m_controller->tabWidget()->insertDockWidget(dw, index);
+    m_frame->tabWidget()->insertDockWidget(dw, index);
 }
 
 void Frame_qtwidgets::removeWidget_impl(Controllers::DockWidget *dw)
 {
-    m_controller->tabWidget()->removeDockWidget(dw);
+    m_frame->tabWidget()->removeDockWidget(dw);
 }
 
 void Frame_qtwidgets::setCurrentTabIndex_impl(int index)
 {
-    m_controller->tabWidget()->setCurrentDockWidget(index);
+    m_frame->tabWidget()->setCurrentDockWidget(index);
 }
 
 KDDockWidgets::Controllers::DockWidget *Frame_qtwidgets::currentDockWidget_impl() const
 {
-    return m_controller->tabWidget()->dockwidgetAt(m_controller->tabWidget()->currentIndex());
+    return m_frame->tabWidget()->dockwidgetAt(m_frame->tabWidget()->currentIndex());
 }
 
 KDDockWidgets::Controllers::DockWidget *Frame_qtwidgets::dockWidgetAt_impl(int index) const
 {
-    return m_controller->tabWidget()->dockwidgetAt(index);
-}
-
-Controllers::Frame *Frame_qtwidgets::frame() const
-{
-    return m_controller;
+    return m_frame->tabWidget()->dockwidgetAt(index);
 }
 
 bool Frame_qtwidgets::event(QEvent *e)
@@ -149,7 +144,7 @@ bool Frame_qtwidgets::event(QEvent *e)
 
     if (e->type() == QEvent::ParentChange) {
         auto p = parentView();
-        m_controller->setLayout(p ? p->asLayout() : nullptr);
+        m_frame->setLayout(p ? p->asLayout() : nullptr);
     }
 
     return QWidget::event(e);
@@ -160,7 +155,7 @@ void Frame_qtwidgets::paintEvent(QPaintEvent *)
     if (freed())
         return;
 
-    if (!m_controller->isFloating()) {
+    if (!m_frame->isFloating()) {
         QPainter p(this);
         p.setRenderHint(QPainter::Antialiasing);
 
@@ -168,7 +163,7 @@ void Frame_qtwidgets::paintEvent(QPaintEvent *)
         const qreal halfPenWidth = penWidth / 2;
         const QRectF rectf = QWidget::rect();
 
-        const bool isOverlayed = m_controller->isOverlayed();
+        const bool isOverlayed = m_frame->isOverlayed();
         const QColor penColor = isOverlayed ? QColor(0x666666)
                                             : QColor(184, 184, 184, 184);
         QPen pen(penColor);
@@ -190,18 +185,18 @@ QSize Frame_qtwidgets::maxSizeHint() const
         return {};
 
     // waste due to QTabWidget margins, tabbar etc.
-    const QSize waste = minSize() - m_controller->dockWidgetsMinSize();
-    return waste + m_controller->biggestDockWidgetMaxSize();
+    const QSize waste = minSize() - m_frame->dockWidgetsMinSize();
+    return waste + m_frame->biggestDockWidgetMaxSize();
 }
 
 QRect Frame_qtwidgets::dragRect() const
 {
-    QRect rect = m_controller->dragRect();
+    QRect rect = m_frame->dragRect();
     if (rect.isValid())
         return rect;
 
     if (Config::self().flags() & Config::Flag_HideTitleBarWhenTabsVisible) {
-        auto tabBar = qobject_cast<QTabBar *>(asQWidget(m_controller->tabBar()));
+        auto tabBar = qobject_cast<QTabBar *>(asQWidget(m_frame->tabBar()));
         rect.setHeight(tabBar->height());
         rect.setWidth(QWidget::width() - tabBar->width());
         rect.moveTopLeft(QPoint(tabBar->width(), tabBar->y()));