Fixed #420 - Floating docks title doesn't update

added tests for DockWidget->setWindowTitle() in demo application

Author: githubuser0xFFFF

demo/MainWindow.cpp

@@ -433,6 +433,7 @@ void MainWindowPrivate::createContent()
 		int Width = Splitter->width();
 		Splitter->setSizes({Width * 2/3, Width * 1/3});
 	});
+	DockWidget->setWindowTitle(QString("My " + DockWidget->windowTitle()));
 
 	// Now we add a custom button to the dock area title bar that will create
 	// new editor widgets when clicked
@@ -474,6 +475,7 @@ void MainWindowPrivate::createContent()
     // Test visible floating dock widget
     DockWidget = createCalendarDockWidget();
     DockManager->addDockWidgetFloating(DockWidget);
+    DockWidget->setWindowTitle(QString("My " + DockWidget->windowTitle()));
 
 
 #ifdef Q_OS_WIN

src/DockContainerWidget.h

@@ -51,6 +51,7 @@ class CFloatingDragPreview;
 struct FloatingDragPreviewPrivate;
 class CDockingStateReader;
 
+
 /**
  * Container that manages a number of dock areas with single dock widgets
  * or tabyfied dock widgets in each area.

src/DockWidget.cpp

@@ -456,6 +456,14 @@ CDockContainerWidget* CDockWidget::dockContainer() const
 }
 
 
+//============================================================================
+CFloatingDockContainer* CDockWidget::floatingDockContainer() const
+{
+	auto DockContainer = dockContainer();
+	return DockContainer ? DockContainer->floatingWidget() : nullptr;
+}
+
+
 //============================================================================
 CDockAreaWidget* CDockWidget::dockAreaWidget() const
 {
@@ -670,6 +678,12 @@ bool CDockWidget::event(QEvent *e)
 			{
 				d->DockArea->markTitleBarMenuOutdated();//update tabs menu
 			}
+
+			auto FloatingWidget = floatingDockContainer();
+			if (FloatingWidget)
+			{
+				FloatingWidget->updateWindowTitle();
+			}
 			Q_EMIT titleChanged(title);
 		}
 		break;

src/DockWidget.h

@@ -331,6 +331,12 @@ private Q_SLOTS:
      */
     CDockContainerWidget* dockContainer() const;
 
+    /**
+     * This function return the floating DockContainer if is isFloating() is true
+     * and a nullptr if this dock widget is not floating.
+     */
+    CFloatingDockContainer* floatingDockContainer() const;
+
     /**
      * Returns the dock area widget this dock widget belongs to or 0
      * if this dock widget has not been docked yet