Better compatible with qt4.

* Q_PROPERTY MEMBER wasn't available, use READ and WRITE instead
* Disables namespace with qt4
* Updates default stylesheet to work with qt4 (no namespaces)

Unifies include/forward-declaration style in header files.
README status updates

AdvancedDockingSystem/AdvancedDockingSystem.pro

@@ -10,6 +10,8 @@ CONFIG += staticlib
 INCLUDEPATH += $$PWD/src
 INCLUDEPATH += $$PWD/include
 
+greaterThan(QT_MAJOR_VERSION, 4): DEFINES += ADS_NAMESPACE_ENABLED
+
 windows {
 	# MinGW
 	*-g++* {

AdvancedDockingSystem/include/ads/API.h

@@ -7,12 +7,9 @@
 #include <QSharedPointer>
 class QSplitter;
 
-/*
- * ADS - Advanced Docking System for Qt
- * Developed by Manuel Freiholz
- */
-
-#if 1
+// Use namespace
+// Disabled with Qt4!
+#ifdef ADS_NAMESPACE_ENABLED
 	#define ADS_NAMESPACE_BEGIN namespace ads {
 	#define ADS_NAMESPACE_END }
 	#define ADS_NS ads

AdvancedDockingSystem/include/ads/FloatingWidget.h

@@ -3,14 +3,12 @@
 
 #include <QWidget>
 #include <QFrame>
+class QBoxLayout;
 
 #include "ads/API.h"
 #include "ads/SectionContent.h"
 
-class QBoxLayout;
-
 ADS_NAMESPACE_BEGIN
-
 class ContainerWidget;
 class SectionTitleWidget;
 class SectionContentWidget;

AdvancedDockingSystem/include/ads/SectionContentWidget.h

@@ -7,7 +7,6 @@
 #include "ads/SectionContent.h"
 
 ADS_NAMESPACE_BEGIN
-
 class ContainerWidget;
 class SectionWidget;
 

AdvancedDockingSystem/include/ads/SectionTitleWidget.h

@@ -15,7 +15,7 @@ class FloatingWidget;
 class SectionTitleWidget : public QFrame
 {
 	Q_OBJECT
-	Q_PROPERTY(bool activeTab MEMBER _activeTab NOTIFY activeTabChanged)
+	Q_PROPERTY(bool activeTab READ isActiveTab WRITE setActiveTab NOTIFY activeTabChanged)
 
 	friend class ContainerWidget;
 	friend class SectionWidget;

AdvancedDockingSystem/include/ads/SectionWidget.h

@@ -5,15 +5,13 @@
 #include <QList>
 #include <QHash>
 #include <QFrame>
+class QBoxLayout;
+class QStackedLayout;
 
 #include "ads/API.h"
 #include "ads/SectionContent.h"
 
-class QBoxLayout;
-class QStackedLayout;
-
 ADS_NAMESPACE_BEGIN
-
 class ContainerWidget;
 class SectionTitleWidget;
 class SectionContentWidget;
@@ -33,7 +31,6 @@ public:
 	virtual ~SectionWidget();
 
 	int uid() const;
-	ContainerWidget* containerWidget() const;
 
 	QRect titleAreaGeometry() const;
 	QRect contentAreaGeometry() const;

AdvancedDockingSystem/src/ContainerWidget.cpp

@@ -431,6 +431,7 @@ SectionWidget* ContainerWidget::dropContentOuterHelper(QLayout* l, const Interna
 #else
 			int index = l->indexOf(oldsp);
 			QLayoutItem* li = l->takeAt(index);
+			l->addWidget(sp);
 			sp->addWidget(oldsp);
 			sp->addWidget(sw);
 			delete li;
@@ -447,6 +448,7 @@ SectionWidget* ContainerWidget::dropContentOuterHelper(QLayout* l, const Interna
 			sp->addWidget(sw);
 			int index = l->indexOf(oldsp);
 			QLayoutItem* li = l->takeAt(index);
+			l->addWidget(sp);
 			sp->addWidget(oldsp);
 			delete li;
 #endif

AdvancedDockingSystem/src/SectionWidget.cpp

@@ -79,11 +79,6 @@ int SectionWidget::uid() const
 	return _uid;
 }
 
-ContainerWidget* SectionWidget::containerWidget() const
-{
-	return _container;
-}
-
 QRect SectionWidget::titleAreaGeometry() const
 {
 	return _tabsLayout->geometry();
@@ -167,8 +162,6 @@ bool SectionWidget::takeContent(int uid, InternalContentData& data)
 	{
 		_tabsLayout->removeWidget(title);
 		title->disconnect(this);
-//		if (del)
-//			title->deleteLater();
 	}
 
 	// Content wrapper widget (CONTENT)
@@ -177,8 +170,6 @@ bool SectionWidget::takeContent(int uid, InternalContentData& data)
 	{
 		_contentsLayout->removeWidget(content);
 		content->disconnect(this);
-//		if (del)
-//			content->deleteLater();
 	}
 
 	// Select the previous tab as activeTab.

AdvancedDockingSystemDemo/src/main.cpp

@@ -41,11 +41,11 @@ int main(int argc, char *argv[])
 	// Default style.
 	a.setStyleSheet(""
 		" QSplitter::handle { background: palette(dark); } "
-		" ads--ContainerWidget { background: palette(dark); } "
-		" ads--SectionWidget { background: palette(window); } "
-		" ads--SectionTitleWidget { background: palette(window); } "
-		" ads--SectionTitleWidget[activeTab=\"true\"] { background: palette(light); } "
-		" ads--SectionContentWidget { border: 1px solid palette(light); } "
+		" ads--ContainerWidget, ContainerWidget { background: palette(dark); } "
+		" ads--SectionWidget, SectionWidget { background: palette(window); } "
+		" ads--SectionTitleWidget, SectionTitleWidget { background: palette(window); } "
+		" ads--SectionTitleWidget[activeTab=\"true\"], SectionTitleWidget[activeTab=\"true\"] { background: palette(light); } "
+		" ads--SectionContentWidget, SectionContentWidget { border: 1px solid palette(light); } "
 		"  "
 	);
 

README.md

@@ -1,12 +1,12 @@
 # Advanced Docking System
-Manages content widgets a lot like Visual Studio or similar programs.
+Manages content widgets more like Visual Studio or similar programs.
 I also try to get everything done with basic Qt functionality.
 Basic usage of QWidgets an QLayouts and using basic styles as much as possible.
 
-## Requirements (Tested!)
+## Tested with - Requirements
 **Windows**
-- \>= Qt 5.5
-- VC12 or MinGW (-std=c++11)
+- \>= Qt 5.5, VC12 or MinGW
+- \>= Qt 4.5.3 VC9 - *not as good...*
 
 **Linux**
 - Not yet tested
@@ -21,10 +21,10 @@ Open the `build.pro` with QtCreator and start the build, that's it.
 
 ## TODOs
 Sorted by priority
-- Improve FloatingWidget (Remove maximize button, only support close-button which hides the widget)
+- **[DONE]** Improve FloatingWidget (Remove maximize button, only support close-button which hides the widget)
 - **[DONE]** Serialize and Deserialize state/size/positions of dockings
-- Serialize FloatingWidget states
 - **[90%]** Make compatible with Qt 4.5 (\*ROFL!\*)
+- Save and restore FloatingWidget states
 - Drop indicator images should be fully visible over the DropOverlay rectangle
 - Pin contents: Pins a content and its title widget to the edge and opens on click/hover as long as it has focus