qquickmenu.cpp File Reference

#include "qquickmenu_p.h"
#include "qquickmenu_p_p.h"
#include "qquickmenuitem_p_p.h"
#include "qquickmenubaritem_p.h"
#include "qquickmenubar_p.h"
#include "qquickpopupitem_p_p.h"
#include "qquickpopuppositioner_p_p.h"
#include "qquickaction_p.h"
#include <QtGui/qevent.h>
#include <QtGui/qcursor.h>
#include <QtGui/qpa/qplatformintegration.h>
#include <QtGui/private/qguiapplication_p.h>
#include <QtQml/qqmlcontext.h>
#include <QtQml/qqmlcomponent.h>
#include <QtQml/private/qqmlengine_p.h>
#include <QtQml/private/qv4scopedvalue_p.h>
#include <QtQml/private/qv4variantobject_p.h>
#include <QtQml/private/qv4qobjectwrapper_p.h>
#include <private/qqmlobjectmodel_p.h>
#include <QtQuick/private/qquickitem_p.h>
#include <QtQuick/private/qquickitemchangelistener_p.h>
#include <QtQuick/private/qquickevents_p_p.h>
#include <QtQuick/private/qquickwindow_p.h>
#include "moc_qquickmenu_p.cpp"

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Classes
class	QQuickMenuPositioner

Functions
static bool	shouldCascade ()
static QQuickItem *	findParentMenuItem (QQuickMenu *subMenu)

Variables
static QT_BEGIN_NAMESPACE const int	SUBMENU_DELAY = 225
static const QQuickPopup::ClosePolicy	cascadingSubMenuClosePolicy = QQuickPopup::CloseOnEscape | QQuickPopup::CloseOnPressOutsideParent
	Menu popup that can be used as a context menu or popup menu.

Function Documentation

findParentMenuItem()

static QQuickItem * findParentMenuItem ( QQuickMenu *  subMenu )

static

Definition at line 556 of file qquickmenu.cpp.

References QQuickMenuPrivate::contentModel, QQmlObjectModel::count(), QQuickMenuPrivate::get(), i, item, menu, and QQuickMenuPrivate::parentMenu.

Referenced by QQuickMenuPrivate::resolveParentItem().

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shouldCascade()

static bool shouldCascade ( )

static

Definition at line 202 of file qquickmenu.cpp.

References QPlatformIntegration::hasCapability(), QPlatformIntegration::MultipleWindows, and QGuiApplicationPrivate::platformIntegration().

Referenced by QQuickMenuPrivate::QQuickMenuPrivate(), and QQuickMenu::resetCascade().

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Variable Documentation

cascadingSubMenuClosePolicy

const QQuickPopup::ClosePolicy cascadingSubMenuClosePolicy = QQuickPopup::CloseOnEscape | QQuickPopup::CloseOnPressOutsideParent

static

Menu popup that can be used as a context menu or popup menu.

\qmltype Menu
\inherits Popup

! \instantiates QQuickMenu \inqmlmodule QtQuick.Controls

Since

5.7

Menu has two main use cases: \list

• Context menus; for example, a menu that is shown after right clicking
• Popup menus; for example, a menu that is shown after clicking a button \endlist

When used as a context menu, the recommended way of opening the menu is to call \l popup(). Unless a position is explicitly specified, the menu is positioned at the mouse cursor on desktop platforms that have a mouse cursor available, and otherwise centered over its parent item.

MouseArea {
    anchors.fill: parent
    acceptedButtons: Qt.LeftButton | Qt.RightButton
    onClicked: {
        if (mouse.button === Qt.RightButton)
            contextMenu.popup()
    }
    onPressAndHold: {
        if (mouse.source === Qt.MouseEventNotSynthesized)
            contextMenu.popup()
    }
 
    Menu {
        id: contextMenu
        MenuItem { text: "Cut" }
        MenuItem { text: "Copy" }
        MenuItem { text: "Paste" }
    }
}

When used as a popup menu, it is easiest to specify the position by specifying the desired \l {Popup::}{x} and \l {Popup::}{y} coordinates using the respective properties, and call \l {Popup::}{open()} to open the menu.

Button {
    id: fileButton
    text: "File"
    onClicked: menu.open()
 
    Menu {
        id: menu
        y: fileButton.height
 
        MenuItem {
            text: "New..."
        }
        MenuItem {
            text: "Open..."
        }
        MenuItem {
            text: "Save"
        }
    }
}

If the button should also close the menu when clicked, use the Popup.CloseOnPressOutsideParent flag:

onClicked: menu.visible = !menu.visible
 
Menu {
    // ...
    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutsideParent

Since QtQuick.Controls 2.3 (Qt 5.10), it is also possible to create sub-menus and declare Action objects inside Menu:

Menu {
    Action { text: "Cut" }
    Action { text: "Copy" }
    Action { text: "Paste" }
 
    MenuSeparator { }
 
    Menu {
        title: "Find/Replace"
        Action { text: "Find Next" }
        Action { text: "Find Previous" }
        Action { text: "Replace" }
    }
}

Sub-menus are \l {cascade}{cascading} by default on desktop platforms that have a mouse cursor available. Non-cascading menus are shown one menu at a time, and centered over the parent menu.

Typically, menu items are statically declared as children of the menu, but Menu also provides API to \l {addItem}{add}, \l {insertItem}{insert}, \l {moveItem}{move} and \l {removeItem}{remove} items dynamically. The items in a menu can be accessed using \l itemAt() or \l {Popup::}{contentChildren}.

Although \l {MenuItem}{MenuItems} are most commonly used with Menu, it can contain any type of item.

Definition at line 200 of file qquickmenu.cpp.

Referenced by QQuickMenuPrivate::prepareEnterTransition().

SUBMENU_DELAY

QT_BEGIN_NAMESPACE const int SUBMENU_DELAY = 225

static

Definition at line 35 of file qquickmenu.cpp.

Referenced by QQuickMenuPrivate::startHoverTimer().