qml: Implemented QWidgetAdapter::setFlag

FloatingWindow is frameless now.

src/private/quick/FloatingWindowQuick.cpp

@@ -40,5 +40,6 @@ void FloatingWindowQuick::init()
 {
     m_quickWindow->setResizeMode(QQuickView::SizeViewToRootObject);
     QWidgetAdapter::setParent(m_quickWindow->contentItem());
+    m_quickWindow->setFlags(windowFlags());
     m_quickWindow->show();
 }

src/private/quick/QWidgetAdapter_quick.cpp

@@ -27,8 +27,9 @@
 
 using namespace KDDockWidgets;
 
-QWidgetAdapter::QWidgetAdapter(QQuickItem *parent, Qt::WindowFlags)
+QWidgetAdapter::QWidgetAdapter(QQuickItem *parent, Qt::WindowFlags flags)
     : QQuickItem(parent)
+    , m_requestedWindowFlags(flags)
 {
     this->setParent(parent); // also set parentItem
 
@@ -179,12 +180,25 @@ QSize QWidgetAdapter::sizeHint() const
     return {};
 }
 
+Qt::WindowFlags QWidgetAdapter::windowFlags() const
+{
+    if (QWindow *w = windowHandle())
+        return w->flags();
+
+    return m_requestedWindowFlags;
+}
+
 void QWidgetAdapter::setFlag(Qt::WindowType f, bool on)
 {
-    if (auto w = windowHandle()) {
+    if (QWindow *w = windowHandle()) {
         w->setFlag(f, on);
     } else {
-        qWarning() << Q_FUNC_INFO << "Implement me";
+        // When we create a QWindow we'll set these
+        if (on) {
+            m_requestedWindowFlags |= f;
+        } else {
+            m_requestedWindowFlags &= ~f;
+        }
     }
 }
 

src/private/quick/QWidgetAdapter_quick_p.h

@@ -123,6 +123,8 @@ public:
     QSizePolicy sizePolicy() const;
     QSize sizeHint() const;
 
+    Qt::WindowFlags windowFlags() const;
+
 protected:
     void raiseAndActivate();
 
@@ -135,6 +137,7 @@ protected:
 private:
     QSize m_minimumSize = {KDDOCKWIDGETS_MIN_WIDTH, KDDOCKWIDGETS_MIN_HEIGHT};
     QSize m_maximumSize = {KDDOCKWIDGETS_MAX_WIDTH, KDDOCKWIDGETS_MAX_HEIGHT};
+    Qt::WindowFlags m_requestedWindowFlags;
 };
 
 }