Add DropArea_qtwidgets stub

src/CMakeLists.txt

@@ -123,6 +123,8 @@ set(DOCKSLIBS_SRCS
     qtwidgets/views/FloatingWindow_qtwidgets.h
     qtwidgets/views/DockWidget_qtwidgets.cpp
     qtwidgets/views/DockWidget_qtwidgets.h
+    qtwidgets/views/DropArea_qtwidgets.cpp
+    qtwidgets/views/DropArea_qtwidgets.h
     qtwidgets/views/Frame_qtwidgets.cpp
     qtwidgets/views/Frame_qtwidgets.h
     qtwidgets/views/MainWindow_qtwidgets.cpp

src/FrameworkWidgetFactory.h

@@ -116,6 +116,9 @@ public:
     ///@param dropArea Just forward to DropIndicatorOverlayInterface's constructor.
     virtual DropIndicatorOverlayInterface *createDropIndicatorOverlay(Controllers::DropArea *dropArea) const = 0;
 
+    /// @brief Called internally by the framework to create a DropArea
+    virtual View *createDropArea(Controllers::DropArea *, View *parent) const = 0;
+
     ///@brief Called internally by the framework to create a RubberBand to show as drop zone
     /// Returns a rubber band
     virtual QWidgetOrQuick *createRubberBand(QWidgetOrQuick *parent) const = 0;

src/qtwidgets/FrameworkWidgetFactory_qtwidgets.cpp

@@ -24,6 +24,7 @@
 
 #include "qtwidgets/views/FloatingWindow_qtwidgets.h"
 #include "qtwidgets/views/DockWidget_qtwidgets.h"
+#include "qtwidgets/views/DropArea_qtwidgets.h"
 #include "qtwidgets/views/Frame_qtwidgets.h"
 #include "qtwidgets/views/MainWindow_qtwidgets.h"
 #include "qtwidgets/views/View_qtwidgets.h"
@@ -185,3 +186,8 @@ QIcon DefaultWidgetFactory_qtwidgets::iconForButtonType(TitleBarButtonType type,
 
     return icon;
 }
+
+View *DefaultWidgetFactory_qtwidgets::createDropArea(Controllers::DropArea *controller, View *parent) const
+{
+    return new Views::DropArea_qtwidgets(controller, parent);
+}

src/qtwidgets/FrameworkWidgetFactory_qtwidgets.h

@@ -67,6 +67,7 @@ public:
     DropIndicatorOverlayInterface *createDropIndicatorOverlay(Controllers::DropArea *) const override;
     QWidgetOrQuick *createRubberBand(QWidgetOrQuick *parent) const override;
     View *createSideBar(Controllers::SideBar *, Controllers::MainWindow *parent) const override;
+    View *createDropArea(Controllers::DropArea *, View *parent) const override;
 
 #ifdef KDDOCKWIDGETS_QTWIDGETS
     QAbstractButton *createTitleBarButton(QWidget *parent, TitleBarButtonType) const override;

src/qtwidgets/views/DropArea_qtwidgets.cpp

@@ -0,0 +1,33 @@
+/*
+  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.
+*/
+
+#include "DropArea_qtwidgets.h"
+#include "private/Utils_p.h"
+
+using namespace KDDockWidgets;
+using namespace KDDockWidgets::Views;
+
+DropArea_qtwidgets::DropArea_qtwidgets(Controllers::DropArea *dropArea, View *parent)
+    : MultiSplitter(parent)
+    , m_dropArea(dropArea)
+{
+    if (isWayland()) {
+#ifdef KDDOCKWIDGETS_QTWIDGETS
+        setAcceptDrops(true);
+#else
+        qWarning() << "Dropping not implement for QtQuick on Wayland yet!";
+#endif
+    }
+}
+
+DropArea_qtwidgets::~DropArea_qtwidgets()
+{
+}

src/qtwidgets/views/DropArea_qtwidgets.h

@@ -0,0 +1,46 @@
+/*
+  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.
+*/
+
+/**
+ * @file
+ * @brief A MultiSplitter with support for drop indicators when hovering over.
+ *
+ * @author Sérgio Martins \<sergio.martins@kdab.com\>
+ */
+
+#pragma once
+
+#include "kddockwidgets/docks_export.h"
+#include "kddockwidgets/KDDockWidgets.h"
+
+#include "private/MultiSplitter_p.h"
+
+namespace KDDockWidgets {
+
+namespace Controllers {
+class DropArea;
+}
+
+namespace Views {
+
+class DOCKS_EXPORT DropArea_qtwidgets : public MultiSplitter
+{
+    Q_OBJECT
+public:
+    explicit DropArea_qtwidgets(Controllers::DropArea *, View *parent);
+    ~DropArea_qtwidgets();
+
+private:
+    Controllers::DropArea *const m_dropArea;
+};
+
+}
+}