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

@@ -190,14 +190,14 @@ public:
 		TabCloseButtonIsToolButton = 0x0040,//! If enabled the tab close buttons will be QToolButtons instead of QPushButtons - disabled by default
 		AllTabsHaveCloseButton = 0x0080, //!< if this flag is set, then all tabs that are closable show a close button
 		RetainTabSizeWhenCloseButtonHidden = 0x0100, //!< if this flag is set, the space for the close button is reserved even if the close button is not visible
-		DragPreviewIsDynamic = 0x0400,///< If opaque undocking is disabled, this flag defines the behavior of the drag preview window, if this flag is enabled, the preview will be adjusted dynamically to the drop area
+	    DragPreviewIsDynamic = 0x0400,///< If opaque undocking is disabled, this flag defines the behavior of the drag preview window, if this flag is enabled, the preview will be adjusted dynamically to the drop area
 		DragPreviewShowsContentPixmap = 0x0800,///< If opaque undocking is disabled, the created drag preview window shows a copy of the content of the dock widget / dock are that is dragged
 		DragPreviewHasWindowFrame = 0x1000,///< If opaque undocking is disabled, then this flag configures if the drag preview is frameless or looks like a real window
 		AlwaysShowTabs = 0x2000,///< If this option is enabled, the tab of a dock widget is always displayed - even if it is the only visible dock widget in a floating widget.
-		DockAreaHasUndockButton = 0x4000,     //!< If the flag is set each dock area has an undock button
+	    DockAreaHasUndockButton = 0x4000,     //!< If the flag is set each dock area has an undock button
 		DockAreaHasTabsMenuButton = 0x8000,     //!< If the flag is set each dock area has a tabs menu button
 		DockAreaHideDisabledButtons = 0x10000,    //!< If the flag is set disabled dock area buttons will not appear on the toolbar at all (enabling them will bring them back)
-		DockAreaDynamicTabsMenuButtonVisibility = 0x20000, //!< If the flag is set, the tabs menu button will be shown only when it is required - that means, if the tabs are elided. If the tabs are not elided, it is hidden
+	    DockAreaDynamicTabsMenuButtonVisibility = 0x20000, //!< If the flag is set, the tabs menu button will be shown only when it is required - that means, if the tabs are elided. If the tabs are not elided, it is hidden
 		FloatingContainerHasWidgetTitle = 0x40000, //!< If set, the Floating Widget window title reflects the title of the current dock widget otherwise it displays the title set with `CDockManager::setFloatingContainersTitle` or application name as window title
 		FloatingContainerHasWidgetIcon = 0x80000, //!< If set, the Floating Widget icon reflects the icon of the current dock widget otherwise it displays application icon
 		HideSingleCentralWidgetTitleBar = 0x100000, //!< If there is only one single visible dock widget in the main dock container (the dock manager) and if this flag is set, then the titlebar of this dock widget will be hidden
@@ -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
 };
 
 /**
@@ -126,13 +127,14 @@ enum eDragState
  */
 enum eIcon
 {
-	TabCloseIcon,      //!< TabCloseIcon
-	AutoHideIcon,      //!< AutoHideIcon
-	DockAreaMenuIcon,  //!< DockAreaMenuIcon
-	DockAreaUndockIcon,//!< DockAreaUndockIcon
-	DockAreaCloseIcon, //!< DockAreaCloseIcon
+	TabCloseIcon,		  //!< TabCloseIcon
+	AutoHideIcon,		  //!< AutoHideIcon
+	DockAreaMenuIcon,	  //!< DockAreaMenuIcon
+	DockAreaUndockIcon,	  //!< DockAreaUndockIcon
+	DockAreaCloseIcon,	  //!< DockAreaCloseIcon
+	DockAreaMinimizeIcon, //!< DockAreaMinimizeIcon
 
-	IconCount,         //!< just a delimiter for range checks
+	IconCount,			  //!< just a delimiter for range checks
 };
 
 /**