KHamburgerMenu

#include <KHamburgerMenu>

Inheritance diagram for KHamburgerMenu:

[legend]

Signals
void	aboutToShowMenu ()

Public Member Functions
	KHamburgerMenu (QObject *parent)

void	addToMenu (QMenu *menu)

void	hideActionsOf (QWidget *widget)

void	insertIntoMenuBefore (QMenu menu, QAction before)

QMenuBar *	menuBar () const

bool	menuBarAdvertised () const

void	setMenuBar (QMenuBar *menuBar)

void	setMenuBarAdvertised (bool advertise)

void	setShowMenuBarAction (QAction *showMenuBarAction)

void	showActionsOf (QWidget *widget)

Public Member Functions inherited from QWidgetAction
	QWidgetAction (QObject *parent)

QWidget *	defaultWidget () const const

void	releaseWidget (QWidget *widget)

QWidget *	requestWidget (QWidget *parent)

void	setDefaultWidget (QWidget *widget)

Public Member Functions inherited from QAction
	QAction (const QIcon &icon, const QString &text, QObject *parent)

	QAction (const QString &text, QObject *parent)

	QAction (QObject *parent)

QActionGroup *	actionGroup () const const

void	activate (QAction::ActionEvent event)

QList< QGraphicsWidget * >	associatedGraphicsWidgets () const const

QList< QWidget * >	associatedWidgets () const const

bool	autoRepeat () const const

void	changed ()

QVariant	data () const const

QFont	font () const const

void	hover ()

void	hovered ()

QIcon	icon () const const

QString	iconText () const const

bool	isCheckable () const const

bool	isChecked () const const

bool	isEnabled () const const

bool	isIconVisibleInMenu () const const

bool	isSeparator () const const

bool	isShortcutVisibleInContextMenu () const const

bool	isVisible () const const

QMenu *	menu () const const

QAction::MenuRole	menuRole () const const

QWidget *	parentWidget () const const

QAction::Priority	priority () const const

void	setActionGroup (QActionGroup *group)

void	setAutoRepeat (bool)

void	setCheckable (bool)

void	setChecked (bool)

void	setData (const QVariant &userData)

void	setDisabled (bool b)

void	setEnabled (bool)

void	setFont (const QFont &font)

void	setIcon (const QIcon &icon)

void	setIconText (const QString &text)

void	setIconVisibleInMenu (bool visible)

void	setMenu (QMenu *menu)

void	setMenuRole (QAction::MenuRole menuRole)

void	setPriority (QAction::Priority priority)

void	setSeparator (bool b)

void	setShortcut (const QKeySequence &shortcut)

void	setShortcutContext (Qt::ShortcutContext context)

void	setShortcuts (const QList< QKeySequence > &shortcuts)

void	setShortcuts (QKeySequence::StandardKey key)

void	setShortcutVisibleInContextMenu (bool show)

void	setStatusTip (const QString &statusTip)

void	setText (const QString &text)

void	setToolTip (const QString &tip)

void	setVisible (bool)

void	setWhatsThis (const QString &what)

QKeySequence	shortcut () const const

Qt::ShortcutContext	shortcutContext () const const

QList< QKeySequence >	shortcuts () const const

bool	showStatusText (QWidget *widget)

QString	statusTip () const const

QString	text () const const

void	toggle ()

void	toggled (bool checked)

QString	toolTip () const const

void	trigger ()

void	triggered (bool checked)

QString	whatsThis () const const

Public Member Functions inherited from QObject
	QObject (QObject *parent)

bool	blockSignals (bool block)

const QObjectList &	children () const const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectInfo ()

void	dumpObjectInfo () const const

void	dumpObjectTree ()

void	dumpObjectTree () const const

QList< QByteArray >	dynamicPropertyNames () const const

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const const

bool	isWindowType () const const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const const

void	moveToThread (QThread *targetThread)

QString	objectName () const const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

QVariant	property (const char *name) const const

	Q_CLASSINFO (Name, Value)

	Q_DISABLE_COPY (Class)

	Q_DISABLE_COPY_MOVE (Class)

	Q_DISABLE_MOVE (Class)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	Q_NAMESPACE Q_NAMESPACE

	Q_NAMESPACE_EXPORT (EXPORT_MACRO)

	Q_OBJECT Q_OBJECT

	Q_PROPERTY (...)

	Q_REVISION Q_REVISION

	Q_SET_OBJECT_NAME (Object)

	Q_SIGNAL Q_SIGNAL

	Q_SIGNALS Q_SIGNALS

	Q_SLOT Q_SLOT

	Q_SLOTS Q_SLOTS

T	qFindChild (const QObject *obj, const QString &name)

QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)

QList< T >	qFindChildren (const QObject *obj, const QString &name)

T	qobject_cast (const QObject *object)

T	qobject_cast (QObject *object)

	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	signalsBlocked () const const

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)

QThread *	thread () const const

Protected Member Functions
virtual QWidget *	createWidget (QWidget *parent) override

Protected Member Functions inherited from QWidgetAction
QList< QWidget * >	createdWidgets () const const

virtual void	deleteWidget (QWidget *widget)

virtual bool	event (QEvent *event) override

virtual bool	eventFilter (QObject obj, QEvent event) override

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const const

int	receivers (const char *signal) const const

QObject *	sender () const const

int	senderSignalIndex () const const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Public Types inherited from QAction
enum	ActionEvent

enum	MenuRole

enum	Priority

Properties inherited from QAction
	autoRepeat

	checkable

	checked

	enabled

	font

	icon

	iconText

	iconVisibleInMenu

	menuRole

	priority

	shortcut

	shortcutContext

	shortcutVisibleInContextMenu

	statusTip

	text

	toolTip

	visible

	whatsThis

Properties inherited from QObject
	objectName

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

Public Attributes inherited from QAction
	AboutQtRole

	AboutRole

	ApplicationSpecificRole

	HighPriority

	Hover

	LowPriority

	NormalPriority

	NoRole

	PreferencesRole

	QuitRole

	TextHeuristicRole

	Trigger

Public Attributes inherited from QObject
typedef	QObjectList

Detailed Description

A menu that substitutes a menu bar when necessary.

Allowing users to toggle the visibility of the menu bar and/or toolbars, while pretty/"simple by default", can lead to various grave usability issues. This class makes it easy to prevent all of them.

Simply add a KHamburgerMenu to your UI (typically to a QToolBar) and make it aware of a QMenuBar like this:

auto hamburgerMenu = KStandardAction::hamburgerMenu(nullptr, nullptr, actionCollection());
toolBar()->addAction(hamburgerMenu);
hamburgerMenu->hideActionsOf(toolBar());
// after the QMenuBar has been initialised
hamburgerMenu->setMenuBar(menuBar()); // line not needed if there is no QMenuBar

The added menu button will only be visible when the QMenuBar is hidden. With this minimal initialisation it will contain the contents of the menu bar. If a user (also) hides the container the KHamburgerMenu was added to they might find themselves without a way to get a menu back. To prevent this, it is recommended to add the hamburgerMenu to prominent context menus like the one of your central widget preferably at the first position. Simply write:

hamburgerMenu->addActionToMenu(contextMenu);

The added menu will only be visible if the QMenuBar is hidden and the hamburgerMenu->createdWidgets() are all invisible to the user.

Populating the KHamburgerMenu

This is easy:

auto menu = new QMenu(this);
menu->addAction(action);
// Add actions, separators, etc. like usual.
hamburgerMenu->setMenu(menu);

You probably do not want this to happen on startup. Therefore KHamburgerMenu provides the signal aboutToShowMenu that you can connect to a function containing the previous statements.

connect(hamburgerMenu, &KHamburgerMenu::aboutToShowMenu,
        this, &MainWindow::updateHamburgerMenu);
// You might want to disconnect the signal after initial creation if the contents never change.

Deciding what to put on the hamburger menu

Be sure to add all of the most important actions. Actions which are already visible on QToolBars, etc. will not show up in the hamburgerMenu. To manage which containers KHamburgerMenu should watch for redundancy use hideActionsOf(QWidget *) and showActionsOf(QWidget *). When a KHamburgerMenu is added to a widget, hideActionsOf(that widget) will automatically be called.
Do not worry about adding all actions the application has to offer. The KHamburgerMenu will automatically have a section advertising excluded actions which can be found in the QMenuBar. There will also be the showMenuBarAction if you set it with setShowMenuBarAction().
Do not worry about the help menu. KHamburgerMenu will automatically contain a help menu as the second to last item (if you set a QMenuBar which is expected to have the help menu as the last action).

Since: 5.81

Definition at line 94 of file khamburgermenu.h.

Member Function Documentation

◆ aboutToShowMenu

void KHamburgerMenu::aboutToShowMenu ( )

signal

This signal is emitted when a hamburger menu button is about to be pressed down.

It is also emitted when a QMenu that contains a visible KHamburgerMenu emits QMenu::aboutToShow.

◆ addToMenu()

void KHamburgerMenu::addToMenu ( QMenu * menu )

Adds this KHamburgerMenu to menu.

It will only be visible in the menu if both the menu bar and all of this QWidgetAction's createdWidgets() are invisible. If it is visible in the menu, then opening the menu emits the aboutToShowMenu signal.

Parameters

menu	The menu this KHamburgerMenu is supposed to appear in.

Definition at line 107 of file khamburgermenu.cpp.

◆ createWidget()

QWidget * KHamburgerMenu::createWidget ( QWidget * parent )

overrideprotectedvirtual

See also: QWidgetAction::createWidget

Reimplemented from QWidgetAction.

Definition at line 185 of file khamburgermenu.cpp.

◆ hideActionsOf()

void KHamburgerMenu::hideActionsOf ( QWidget * widget )

Adds widget to a list of widgets that should be monitored for their actions().

If the widget is a QMenu, its actions will be treated as known to the user. If the widget isn't a QMenu, its actions will only be treated as known to the user when the widget is actually visible.

Parameters

widget A widget that contains actions which should not show up in the KHamburgerMenu redundantly.

Definition at line 141 of file khamburgermenu.cpp.

◆ insertIntoMenuBefore()

void KHamburgerMenu::insertIntoMenuBefore	(	QMenu *	menu,
		QAction *	before
	)

Inserts this KHamburgerMenu to menu's list of actions, before the action before.

Parameters

before	The action before which KHamburgerMenu should be inserted.
menu	The menu this KHamburgerMenu is supposed to appear in.

See also: QWidget::insertAction(), QMenu::insertMenu()

Since: 5.99

Definition at line 113 of file khamburgermenu.cpp.

◆ menuBar()

QMenuBar * KHamburgerMenu::menuBar ( ) const

See also: setMenuBar()

Definition at line 63 of file khamburgermenu.cpp.

◆ menuBarAdvertised()

bool KHamburgerMenu::menuBarAdvertised ( ) const

See also: setMenuBarAdvertised()

Definition at line 85 of file khamburgermenu.cpp.

◆ setMenuBar()

void KHamburgerMenu::setMenuBar ( QMenuBar * menuBar )

Associates this KHamburgerMenu with menuBar.

The KHamburgerMenu will from now on only be visible when menuBar is hidden. (Menu bars with QMenuBar::isNativeMenuBar() == true are considered hidden.)

Furthermore the KHamburgerMenu will have the help menu from the menuBar added at the end. There will also be a special sub-menu advertising actions which are only available in the menu bar unless advertiseMenuBar(false) was called.

Parameters

menuBar The QMenuBar the KHamburgerMenu should be associated with. This can be set to nullptr.

Definition at line 43 of file khamburgermenu.cpp.

◆ setMenuBarAdvertised()

void KHamburgerMenu::setMenuBarAdvertised ( bool advertise )

By default the KHamburgerMenu contains a special sub-menu that advertises actions of the menu bar which would otherwise not be visible or discoverable for the user.

This method removes or re-adds that sub-menu.

Parameters

advertise sets whether the special sub-menu that advertises menu bar only actions should exist.

Definition at line 74 of file khamburgermenu.cpp.