Adds activeTabChanged() signal to let API users know about this state

change. It might be use to re-polish style sheets.

AdvancedDockingSystem/include/ads/ContainerWidget.h

@@ -118,11 +118,19 @@ private:
 	bool takeContent(const SectionContent::RefPtr& sc, InternalContentData& data);
 
 private slots:
+	void onActiveTabChanged();
 	void onActionToggleSectionContentVisibility(bool visible);
 
 signals:
 	void orientationChanged();
 
+	/*!
+	 * Emits whenever the "isActiveTab" state of a SectionContent changes.
+	 * Whenever the users sets another tab as active, this signal gets invoked
+	 * for the old now inactive tab and the new active tab (the order is unspecified).
+	 */
+	void activeTabChanged(const SectionContent::RefPtr& sc, bool active);
+
 private:
 	QList<SectionWidget*> _sections;
 	QList<FloatingWidget*> _floatings;

AdvancedDockingSystem/res/stylesheets/vendor-partsolutions.css

@@ -48,8 +48,10 @@ IconTitleWidget {
 
 ads--SectionTitleWidget QLabel, SectionTitleWidget QLabel {
 	color: #ffffff;
+	background: #7c9eb3;
 }
 
 ads--SectionTitleWidget[activeTab="true"] QLabel, SectionTitleWidget[activeTab="true"] QLabel {
-	color: #ffffff;
+	color: #000000;
+	background: #E7F3F8;
 }

AdvancedDockingSystem/src/ContainerWidget.cpp

@@ -70,6 +70,8 @@ SectionWidget* ContainerWidget::addSectionContent(const SectionContent::RefPtr&
 	data.content = sc;
 	data.titleWidget = new SectionTitleWidget(sc, NULL);
 	data.contentWidget = new SectionContentWidget(sc, NULL);
+	QObject::connect(data.titleWidget, &SectionTitleWidget::activeTabChanged, this, &ContainerWidget::onActiveTabChanged);
+
 	return dropContent(data, sw, area, false);
 }
 
@@ -1021,6 +1023,16 @@ bool ContainerWidget::takeContent(const SectionContent::RefPtr& sc, InternalCont
 	return found;
 }
 
+void ContainerWidget::onActiveTabChanged()
+{
+	SectionTitleWidget* stw = qobject_cast<SectionTitleWidget*>(sender());
+	if (stw)
+	{
+		qDebug() << "Active tab changed" << stw->_content->uid() << stw->isActiveTab();
+		emit activeTabChanged(stw->_content, stw->isActiveTab());
+	}
+}
+
 void ContainerWidget::onActionToggleSectionContentVisibility(bool visible)
 {
 	QAction* a = qobject_cast<QAction*>(sender());

AdvancedDockingSystemDemo/src/icontitlewidget.cpp

@@ -13,23 +13,25 @@ IconTitleWidget::IconTitleWidget(const QIcon& icon, const QString& title, QWidge
 	l->setContentsMargins(0, 0, 0, 0);
 	setLayout(l);
 
-	// Icon label
-	if (icon.isNull())
-	{
-//		QLabel* titleIcon = new QLabel();
-//		titleIcon->setPixmap(style()->standardIcon(QStyle::SP_MessageBoxInformation).pixmap(16, 16));
-//		l->addWidget(titleIcon);
-	}
-	else
-	{
-		QLabel* titleIcon = new QLabel();
-		titleIcon->setPixmap(icon.pixmap(16, 16));
-		l->addWidget(titleIcon);
-	}
+	_iconLabel = new QLabel();
+	if (!icon.isNull())
+		_iconLabel->setPixmap(icon.pixmap(16, 16));
+	l->addWidget(_iconLabel);
 
-	// Title label
-	QLabel* titleText = new QLabel(title);
-	QFont titleFont = titleText->font();
-	titleText->setFont(titleFont);
-	l->addWidget(titleText, 1);
+	_titleLabel = new QLabel();
+	_titleLabel->setText(title);
+	l->addWidget(_titleLabel, 1);
+}
+
+void IconTitleWidget::polishUpdate()
+{
+	QList<QWidget*> widgets;
+	widgets.append(_iconLabel);
+	widgets.append(_titleLabel);
+	foreach (QWidget* w, widgets)
+	{
+		w->style()->unpolish(w);
+		w->style()->polish(w);
+		w->update();
+	}
 }

AdvancedDockingSystemDemo/src/icontitlewidget.h

@@ -4,16 +4,19 @@
 #include <QFrame>
 class QIcon;
 class QString;
+class QLabel;
 
 class IconTitleWidget : public QFrame
 {
 	Q_OBJECT
+
 public:
 	explicit IconTitleWidget(const QIcon& icon, const QString& title, QWidget *parent = 0);
+	void polishUpdate();
 
-signals:
-
-public slots:
+public:
+	QLabel* _iconLabel;
+	QLabel* _titleLabel;
 };
 
 #endif // ICONTITLEWIDGET_H

AdvancedDockingSystemDemo/src/main.cpp

@@ -12,8 +12,8 @@ int main(int argc, char *argv[])
 	//Q_INIT_RESOURCE(ads);
 
 	// Load style sheet
-	QFile f(":/stylesheets/default-windows.css");
-//	QFile f(":/stylesheets/vendor-partsolutions.css");
+//	QFile f(":/stylesheets/default-windows.css");
+	QFile f(":/stylesheets/vendor-partsolutions.css");
 	if (f.open(QFile::ReadOnly))
 	{
 		QByteArray ba = f.readAll();

AdvancedDockingSystemDemo/src/mainwindow.cpp

@@ -9,9 +9,7 @@
 #include <QTreeView>
 #include <QFileSystemModel>
 
-#include "ads/ContainerWidget.h"
 #include "ads/SectionWidget.h"
-#include "ads/SectionContent.h"
 
 #include "icontitlewidget.h"
 
@@ -95,6 +93,7 @@ MainWindow::MainWindow(QWidget *parent) :
 
 	_container = new ADS_NS::ContainerWidget();
 	_container->setOrientation(Qt::Vertical);
+	QObject::connect(_container, &ADS_NS::ContainerWidget::activeTabChanged, this, &MainWindow::onActiveTabChanged);
 	setCentralWidget(_container);
 
 	// Test #1: Use high-level public API
@@ -122,6 +121,15 @@ MainWindow::~MainWindow()
 	delete ui;
 }
 
+void MainWindow::onActiveTabChanged(const ADS_NS::SectionContent::RefPtr& sc, bool active)
+{
+	IconTitleWidget* itw = dynamic_cast<IconTitleWidget*>(sc->titleWidget());
+	if (itw)
+	{
+		itw->polishUpdate();
+	}
+}
+
 void MainWindow::onActionAddSectionContentTriggered()
 {
 	return;

AdvancedDockingSystemDemo/src/mainwindow.h

@@ -3,15 +3,13 @@
 
 #include <QMainWindow>
 #include "ads/API.h"
+#include "ads/ContainerWidget.h"
+#include "ads/SectionContent.h"
 
 namespace Ui {
 class MainWindow;
 }
 
-ADS_NAMESPACE_BEGIN
-class ContainerWidget;
-ADS_NAMESPACE_END
-
 class MainWindow : public QMainWindow
 {
 	Q_OBJECT
@@ -21,6 +19,7 @@ public:
 	virtual ~MainWindow();
 
 private slots:
+	void onActiveTabChanged(const ADS_NS::SectionContent::RefPtr& sc, bool active);
 	void onActionAddSectionContentTriggered();
 
 protected:

README.md

@@ -57,7 +57,7 @@ Items sorted by priority
 - [x] Show close button on right corner of SectionWidget. How to safe last section position?
 - [x] Serialize state of `_hiddenSectionContents`
 - [x] Add "title" to SectionContent object, which will be used in visible areas to display contents name.
-- [ ] It should be possible to catch the "activeTabChanged" signal for EXTERN_API users
+- [x] It should be possible to catch the "activeTabChanged" signal for EXTERN_API users
 - [x] Add API function to set an SC as active-tab
 - [ ] Use scrolling for SectionWidget tabs?