Add minimize button to auto hide widget.

examples/autohide/mainwindow.cpp

@@ -15,6 +15,7 @@
 #include "AutoHideDockContainer.h"
 #include "DockAreaWidget.h"
 #include "DockAreaTitleBar.h"
+#include "IconProvider.h"
 
 using namespace ads;
 
@@ -24,11 +25,15 @@ CMainWindow::CMainWindow(QWidget *parent)
     , ui(new Ui::CMainWindow)
 {
     ui->setupUi(this);
+    CDockManager::iconProvider().registerCustomIcon(DockAreaMinimizeIcon, QIcon()); // TODO: CP: Icon.
+
     CDockManager::setConfigFlag(CDockManager::OpaqueSplitterResize, true);
     CDockManager::setConfigFlag(CDockManager::XmlCompressionEnabled, false);
     CDockManager::setConfigFlag(CDockManager::FocusHighlighting, true);
     CDockManager::setAutoHideConfigFlags(CDockManager::DefaultAutoHideConfig);
     CDockManager::setAutoHideConfigFlag(CDockManager::AutoHideDockAreaCloseable, false);
+    CDockManager::setAutoHideConfigFlag(CDockManager::AutoHideDockHasMinimizeButton, true);
+
     DockManager = new CDockManager(this);
 
     // Set central widget

src/DockAreaTitleBar.cpp

@@ -71,6 +71,7 @@ struct DockAreaTitleBarPrivate
 	QPointer<CTitleBarButton> TabsMenuButton;
 	QPointer<CTitleBarButton> AutoHideButton;
 	QPointer<CTitleBarButton> UndockButton;
+	QPointer<CTitleBarButton> MinimizeButton;
 	QPointer<CTitleBarButton> CloseButton;
 	QBoxLayout* Layout;
 	CDockAreaWidget* DockArea;
@@ -218,6 +219,17 @@ void DockAreaTitleBarPrivate::createButtons()
 	Layout->addWidget(AutoHideButton, 0);
 	_this->connect(AutoHideButton, SIGNAL(clicked()),  SLOT(onAutoHideButtonClicked()));
 
+	// Minimize button
+	MinimizeButton = new CTitleBarButton(testAutoHideConfigFlag(CDockManager::AutoHideDockHasMinimizeButton));
+	MinimizeButton->setObjectName("autoHideDockAreaMinimizeButton");
+	MinimizeButton->setAutoRaise(true);
+	internal::setButtonIcon(MinimizeButton, QStyle::SP_TitleBarNormalButton, ads::DockAreaMinimizeIcon);
+    internal::setToolTip(MinimizeButton, _this->titleBarButtonToolTip(TitleBarButtonMinimize));
+	MinimizeButton->setSizePolicy(ButtonSizePolicy);
+	MinimizeButton->setIconSize(QSize(16, 16));
+	Layout->addWidget(MinimizeButton, 0);
+	_this->connect(MinimizeButton, SIGNAL(clicked()), SLOT(onMinimizeButtonClicked()));
+
 	// Close button
 	CloseButton = new CTitleBarButton(testConfigFlag(CDockManager::DockAreaHasCloseButton));
 	CloseButton->setObjectName("dockAreaCloseButton");
@@ -228,6 +240,7 @@ void DockAreaTitleBarPrivate::createButtons()
 	CloseButton->setIconSize(QSize(16, 16));
 	Layout->addWidget(CloseButton, 0);
 	_this->connect(CloseButton, SIGNAL(clicked()), SLOT(onCloseButtonClicked()));
+
 }
 
 
@@ -527,6 +540,14 @@ void CDockAreaTitleBar::onAutoHideButtonClicked()
 	}
 }
 
+//============================================================================
+void CDockAreaTitleBar::onMinimizeButtonClicked()
+{
+	if (d->DockArea->autoHideDockContainer())
+	{
+		d->DockArea->autoHideDockContainer()->collapseView(true);
+	}    
+}
 
 //============================================================================
 void CDockAreaTitleBar::onAutoHideDockAreaActionClicked()
@@ -551,6 +572,7 @@ CTitleBarButton* CDockAreaTitleBar::button(TitleBarButton which) const
 	case TitleBarButtonTabsMenu: return d->TabsMenuButton;
 	case TitleBarButtonUndock: return d->UndockButton;
 	case TitleBarButtonClose: return d->CloseButton;
+	case TitleBarButtonMinimize: return d->MinimizeButton;
 	case TitleBarButtonAutoHide: return d->AutoHideButton;
 	default:
 		return nullptr;
@@ -740,6 +762,12 @@ void CDockAreaTitleBar::contextMenuEvent(QContextMenuEvent* ev)
 		}
 		Menu.addSeparator();
 	}
+	if (isAutoHide && CDockManager::testAutoHideConfigFlag(CDockManager::AutoHideDockHasMinimizeButton))
+	{
+		Action = Menu.addAction(tr("Minimize"), this, SLOT(onMinimizeButtonClicked()));
+		Action->setEnabled(true);
+	}
+
 	Action = Menu.addAction(isAutoHide ? tr("Close") : tr("Close Group"), this, SLOT(onCloseButtonClicked()));
 	Action->setEnabled(d->DockArea->features().testFlag(CDockWidget::DockWidgetClosable));
 	if (!isAutoHide && !isTopLevelArea)
@@ -800,6 +828,10 @@ QString CDockAreaTitleBar::titleBarButtonToolTip(TitleBarButton Button) const
 		}
 	    break;
 
+	case TitleBarButtonMinimize:
+	    return tr("Minimize");
+		break;
+
 	default:
 		break;
 	}

src/DockAreaTitleBar.h

@@ -101,6 +101,7 @@ private Q_SLOTS:
 	void onTabsMenuActionTriggered(QAction* Action);
 	void onCurrentTabChanged(int Index);
 	void onAutoHideButtonClicked();
+	void onMinimizeButtonClicked();
 	void onAutoHideDockAreaActionClicked();
 	void onAutoHideToActionClicked();
 

src/DockAreaWidget.cpp

@@ -394,6 +394,7 @@ void DockAreaWidgetPrivate::updateTitleBarButtonVisibility(bool IsTopLevel)
 	if (IsTopLevel)
 	{
 		TitleBar->button(TitleBarButtonClose)->setVisible(!container->isFloating());
+		TitleBar->button(TitleBarButtonMinimize)->setVisible(!container->isFloating());
 		TitleBar->button(TitleBarButtonAutoHide)->setVisible(!container->isFloating());
         // Undock and tabs should never show when auto hidden
 		TitleBar->button(TitleBarButtonUndock)->setVisible(!container->isFloating() && !_this->isAutoHide());
@@ -402,6 +403,7 @@ void DockAreaWidgetPrivate::updateTitleBarButtonVisibility(bool IsTopLevel)
 	else
 	{
 		TitleBar->button(TitleBarButtonClose)->setVisible(true);
+		TitleBar->button(TitleBarButtonMinimize)->setVisible(_this->isAutoHide() && CDockManager::testAutoHideConfigFlag(CDockManager::AutoHideDockHasMinimizeButton));
 		TitleBar->button(TitleBarButtonAutoHide)->setVisible(true);
 		TitleBar->button(TitleBarButtonUndock)->setVisible(!_this->isAutoHide());
         TitleBar->button(TitleBarButtonTabsMenu)->setVisible(!_this->isAutoHide());
@@ -888,6 +890,8 @@ void CDockAreaWidget::updateTitleBarButtonsToolTips()
 {
 	internal::setToolTip(titleBarButton(TitleBarButtonClose),
 		titleBar()->titleBarButtonToolTip(TitleBarButtonClose));
+	internal::setToolTip(titleBarButton(TitleBarButtonMinimize),
+		titleBar()->titleBarButtonToolTip(TitleBarButtonMinimize));
 	internal::setToolTip(titleBarButton(TitleBarButtonAutoHide),
 		titleBar()->titleBarButtonToolTip(TitleBarButtonAutoHide));
 }

src/DockContainerWidget.cpp

@@ -911,6 +911,7 @@ void DockContainerWidgetPrivate::addDockAreasToList(const QList<CDockAreaWidget*
 	for (auto DockArea : NewDockAreas)
 	{
 		DockArea->titleBarButton(TitleBarButtonClose)->setVisible(true);
+		DockArea->titleBarButton(TitleBarButtonMinimize)->setVisible(true);
 		DockArea->titleBarButton(TitleBarButtonAutoHide)->setVisible(true);
 	}
 

src/DockManager.h

@@ -251,6 +251,7 @@ public:
 		AutoHideShowOnMouseOver = 0x20, ///< show the auto hide window on mouse over tab and hide it if mouse leaves auto hide container
 		AutoHideCloseButtonCollapsesDock = 0x40, ///< Close button of an auto hide container collapses the dock instead of hiding it completely
 		AutoHideDockAreaCloseable = 0x080,///< if this flag is set, the auto hide dock area can be closed.
+		AutoHideDockHasMinimizeButton = 0x100,///< if the flag is set each auto hide dock area has a minimize button.
 
 		DefaultAutoHideConfig = AutoHideFeatureEnabled
 			                  | DockAreaHasAutoHideButton

src/ads_globals.h

@@ -107,7 +107,8 @@ enum TitleBarButton
 	TitleBarButtonTabsMenu,
 	TitleBarButtonUndock,
 	TitleBarButtonClose,
-	TitleBarButtonAutoHide
+	TitleBarButtonAutoHide,
+	TitleBarButtonMinimize
 };
 
 /**
@@ -131,6 +132,7 @@ enum eIcon
 	DockAreaMenuIcon,	  //!< DockAreaMenuIcon
 	DockAreaUndockIcon,	  //!< DockAreaUndockIcon
 	DockAreaCloseIcon,	  //!< DockAreaCloseIcon
+	DockAreaMinimizeIcon, //!< DockAreaMinimizeIcon
 
 	IconCount,			  //!< just a delimiter for range checks
 };