Removed wrong visibility initialisation of titlebar close button, added hideEmptyParentSplitters() function to properly hide tree of empty parent splitters if DockArea or DockWidget is removed,

src/DockAreaTitleBar.cpp

@@ -158,9 +158,6 @@ void DockAreaTitleBarPrivate::createButtons()
 	CloseButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
 	TopLayout->addWidget(CloseButton, 0);
 	_this->connect(CloseButton, SIGNAL(clicked()), SLOT(onCloseButtonClicked()));
-
-	CloseButton->setEnabled(testConfigFlag(CDockManager::DockAreaHasCloseButton));
-	CloseButton->setVisible(CloseButton->isEnabled());
 }
 
 

src/DockAreaWidget.cpp

@@ -458,16 +458,9 @@ void CDockAreaWidget::hideAreaWithNoVisibleContent()
 {
 	this->toggleView(false);
 
-	// Hide empty parent splitter
+	// Hide empty parent splitters
 	auto Splitter = internal::findParent<CDockSplitter*>(this);
-	while (Splitter && Splitter->isVisible())
+	internal::hideEmptyParentSplitters(Splitter);
-	{
-		if (!Splitter->hasVisibleContent())
-		{
-			Splitter->hide();
-		}
-		Splitter = internal::findParent<CDockSplitter*>(Splitter);
-	}
 
 	//Hide empty floating widget
 	CDockContainerWidget* Container = this->dockContainer();

src/DockContainerWidget.cpp

@@ -48,7 +48,7 @@
 #include "ads_globals.h"
 #include "DockSplitter.h"
 
-#include <QElapsedTimer>
+#include <iostream>
 
 
 namespace ads
@@ -755,9 +755,13 @@ void DockContainerWidgetPrivate::dumpRecursive(int level, QWidget* widget)
 	{
 		qDebug("%sSplitter %s v: %s c: %s",
 			(const char*)buf,
-			(Splitter->orientation() == Qt::Vertical) ? "-" : "|",
+			(Splitter->orientation() == Qt::Vertical) ? "--" : "|",
-			 Splitter->isVisibleTo(Splitter->parentWidget()) ? "1" : "0",
+			 Splitter->isHidden() ? " " : "v",
 			 QString::number(Splitter->count()).toStdString().c_str());
+		std::cout << (const char*)buf << "Splitter "
+			<< ((Splitter->orientation() == Qt::Vertical) ? "--" : "|") << " "
+			<< (Splitter->isHidden() ? " " : "v") << " "
+		    << QString::number(Splitter->count()).toStdString() << std::endl;
 		for (int i = 0; i < Splitter->count(); ++i)
 		{
 			dumpRecursive(level + 1, Splitter->widget(i));
@@ -771,6 +775,19 @@ void DockContainerWidgetPrivate::dumpRecursive(int level, QWidget* widget)
 			return;
 		}
 		qDebug("%sDockArea", (const char*)buf);
+		std::cout << (const char*)buf
+			<< (DockArea->isHidden() ? " " : "v")
+			<< (DockArea->openDockWidgetsCount() > 0 ? " " : "c")
+			<< " DockArea" << std::endl;
+		buf.fill(' ', (level + 1) * 4);
+		for (int i = 0; i < DockArea->dockWidgetsCount(); ++i)
+		{
+			std::cout << (const char*)buf << (i == DockArea->currentIndex() ? "*" : " ");
+			CDockWidget* DockWidget = DockArea->dockWidget(i);
+			std::cout << (DockWidget->isHidden() ? " " : "v");
+			std::cout << (DockWidget->isClosed() ? "c" : " ") << " ";
+			std::cout << DockWidget->windowTitle().toStdString() << std::endl;
+		}
 	}
 #else
 	Q_UNUSED(level);
@@ -922,10 +939,10 @@ void CDockContainerWidget::removeDockArea(CDockAreaWidget* area)
 	d->DockAreas.removeAll(area);
 	CDockSplitter* Splitter = internal::findParent<CDockSplitter*>(area);
 
-	// Remove are from parent splitter and hide splitter if it has no visible
+	// Remove are from parent splitter and recursively hide tree of parent
-	// content
+	// splitters if it has no visible content
 	area->setParent(0);
-	Splitter->setVisible(Splitter->hasVisibleContent());
+	internal::hideEmptyParentSplitters(Splitter);
 
 	// If splitter has more than 1 widgets, we are finished and can leave
 	if (Splitter->count() >  1)
@@ -1040,9 +1057,6 @@ int CDockContainerWidget::visibleDockAreaCount() const
 void CDockContainerWidget::dropFloatingWidget(CFloatingDockContainer* FloatingWidget,
 	const QPoint& TargetPos)
 {
-	QElapsedTimer Timer;
-	Timer.start();
-
 	qDebug() << "CDockContainerWidget::dropFloatingWidget";
 	CDockAreaWidget* DockArea = dockAreaAt(TargetPos);
 	auto dropArea = InvalidDockWidgetArea;
@@ -1203,8 +1217,10 @@ void CDockContainerWidget::dumpLayout()
 {
 #if (ADS_DEBUG_LEVEL > 0)
 	qDebug("\n\nDumping layout --------------------------");
+	std::cout << "\n\nDumping layout --------------------------" << std::endl;
 	d->dumpRecursive(0, d->RootSplitter);
 	qDebug("--------------------------\n\n");
+	std::cout << "--------------------------\n\n" << std::endl;
 #endif
 }
 

src/DockManager.cpp

@@ -32,6 +32,7 @@
 #include "DockManager.h"
 
 #include <algorithm>
+#include <iostream>
 
 #include <QMainWindow>
 #include <QList>
@@ -53,8 +54,6 @@
 #include "DockStateSerialization.h"
 #include "DockAreaWidget.h"
 
-#include <QElapsedTimer>
-#include <iostream>
 
 namespace ads
 {
@@ -515,10 +514,6 @@ QByteArray CDockManager::saveState(eXmlMode XmlMode, int version) const
 //============================================================================
 bool CDockManager::restoreState(const QByteArray &state, int version)
 {
-	std::cout << "CDockManager::restoreState-----------------------" << std::endl;
-	QElapsedTimer Timer;
-	Timer.start();
-
 	// Prevent multiple calls as long as state is not restore. This may
 	// happen, if QApplication::processEvents() is called somewhere
 	if (d->RestoringState)

src/DockSplitter.cpp

@@ -78,7 +78,7 @@ bool CDockSplitter::hasVisibleContent() const
 	// TODO Cache or precalculate this to speed up
 	for (int i = 0; i < count(); ++i)
 	{
-		if (widget(i)->isVisibleTo(this))
+		if (!widget(i)->isHidden())
 		{
 			return true;
 		}

src/DockWidgetTab.cpp

@@ -224,7 +224,6 @@ bool DockWidgetTabPrivate::startFloating()
 	}
 	else
 	{
-		qDebug() << "DockWidgetTabPrivate::startFloating DockArea";
 		// If section widget has only one content widget, we can move the complete
 		// dock area into floating widget
 		FloatingWidget = new CFloatingDockContainer(DockArea);

src/FloatingDockContainer.cpp

@@ -150,10 +150,6 @@ void FloatingDockContainerPrivate::titleMouseReleaseEvent()
 //============================================================================
 void FloatingDockContainerPrivate::updateDropOverlays(const QPoint& GlobalPos)
 {
-	static QElapsedTimer MsSinceLastCallTimer;
-	QElapsedTimer PerformanceTimer;
-	PerformanceTimer.start();
-
 	if (!_this->isVisible() || !DockManager)
 	{
 		return;
@@ -225,8 +221,6 @@ void FloatingDockContainerPrivate::updateDropOverlays(const QPoint& GlobalPos)
     {
     	DockAreaOverlay->hideOverlay();
     }
-
-    std::cout << "updateDropOverlays us: " << PerformanceTimer.nsecsElapsed() / 1000 << std::endl;
 }
 
 

src/ads_globals.cpp

@@ -87,6 +87,20 @@ QPixmap createTransparentPixmap(const QPixmap& Source, qreal Opacity)
 }
 
 
+//============================================================================
+void hideEmptyParentSplitters(CDockSplitter* Splitter)
+{
+	while (Splitter && Splitter->isVisible())
+	{
+		if (!Splitter->hasVisibleContent())
+		{
+			Splitter->hide();
+		}
+		Splitter = internal::findParent<CDockSplitter*>(Splitter);
+	}
+}
+
+
 } // namespace internal
 } // namespace ads
 

src/ads_globals.h

@@ -46,6 +46,8 @@ class QSplitter;
 
 namespace ads
 {
+class CDockSplitter;
+
 enum DockWidgetArea
 {
 	NoDockWidgetArea = 0x00,
@@ -83,6 +85,12 @@ QSplitter* newSplitter(Qt::Orientation orientation, QWidget* parent = 0);
  */
 void replaceSplitterWidget(QSplitter* Splitter, QWidget* From, QWidget* To);
 
+/**
+ * This function walks the splitter tree upwards to hides all splitters
+ * that do not have visible content
+ */
+void hideEmptyParentSplitters(CDockSplitter* FirstParentSplitter);
+
 /**
  * Convenience class for QPair to provide better naming than first and
  * second