Make the panel action sunken when panel is open

src/plugins/coreplugin/fancyactionbar.cpp

@@ -106,7 +106,7 @@ void FancyToolButton::paintEvent(QPaintEvent *event)
         painter.restore();
 
     } else
-#endif
+#endif        
     if (isDown() || isChecked()) {
         painter.save();
         QLinearGradient grad(rect().topLeft(), rect().topRight());

src/plugins/projectexplorer/miniprojecttargetselector.cpp

@@ -294,7 +294,6 @@ bool MiniTargetWidget::hasBuildConfiguration() const
     return (m_target->buildConfigurationFactory() != 0);
 }
 
-
 MiniProjectTargetSelector::MiniProjectTargetSelector(QAction *targetSelectorAction, QWidget *parent) :
     QWidget(parent), m_projectAction(targetSelectorAction)
 {
@@ -352,6 +351,8 @@ void MiniProjectTargetSelector::setVisible(bool visible)
     QWidget::setVisible(visible);
     if (m_widgetStack->currentWidget())
         m_widgetStack->currentWidget()->setFocus();
+
+    m_projectAction->setChecked(visible);
 }
 
 void MiniProjectTargetSelector::addProject(ProjectExplorer::Project* project)

src/plugins/projectexplorer/projectexplorer.cpp

@@ -695,6 +695,7 @@ bool ProjectExplorerPlugin::initialize(const QStringList &arguments, QString *er
 
     // target selector
     d->m_projectSelectorAction = new QAction(this);
+    d->m_projectSelectorAction->setCheckable(true);
     d->m_projectSelectorAction->setEnabled(false);
     QWidget *mainWindow = Core::ICore::instance()->mainWindow();
     d->m_targetSelector = new Internal::MiniProjectTargetSelector(d->m_projectSelectorAction, mainWindow);