Overlay QML Type

A window overlay for popups. More...

Import Statement: import QtQuick.Controls 2.4
Since: Qt 5.10
Inherits:

Item

Attached Properties

Attached Signals

Detailed Description

Overlay provides a layer for popups, ensuring that popups are displayed above other content and that the background is dimmed when a modal or dimmed popup is visible.

The overlay is an ordinary Item that covers the entire window. It can be used as a visual parent to position a popup in scene coordinates.

The following example uses the attached Overlay.overlay property to position a popup in the center of the window, despite the position of the button that opens the popup:

Button {
    onClicked: popup.open()

    Popup {
        id: popup

        parent: Overlay.overlay

        x: Math.round((parent.width - width) / 2)
        y: Math.round((parent.height - height) / 2)
        width: 100
        height: 100
    }
}

See also ApplicationWindow.

Attached Property Documentation

This attached property holds a component to use as a visual item that implements background dimming for modal popups. It is created for and stacked below visible modal popups.

The property can be attached to any popup.

See also Popup::modal.


Overlay.modeless : Component

This attached property holds a component to use as a visual item that implements background dimming for modeless popups. It is created for and stacked below visible dimming popups.

The property can be attached to any popup.

See also Popup::dim.


[read-only] Overlay.overlay : Overlay

This attached property holds the window overlay item.

The property can be attached to any item, popup, or window. When attached to an item or a popup, the value is null if the item or popup is not in a window.


Attached Signal Documentation

pressed()

This attached signal is emitted when the overlay is pressed by the user while a popup is visible.

The signal can be attached to any item, popup, or window. When attached to an item or a popup, the signal is only emitted if the item or popup is in a window.


released()

This attached signal is emitted when the overlay is released by the user while a popup is visible.

The signal can be attached to any item, popup, or window. When attached to an item or a popup, the signal is only emitted if the item or popup is in a window.


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