Struct kas::Popup

pub struct Popup {
    pub id: WidgetId,
    pub parent: WidgetId,
    pub direction: Direction,
}

A widget which escapes its parent's rect

A pop-up is a special widget drawn either as a layer over the existing window or in a new borderless window. It should be precisely positioned next to it's parent's rect, in the specified direction (or, if not possible, in the opposite direction).

A pop-up is in some ways an ordinary child widget and in some ways not. The pop-up widget should be a permanent child of its parent, but is not visible until Manager::add_popup is called.

A pop-up widget's rect is not contained by its parent, therefore the parent must not call any Layout methods on the pop-up (whether or not it is visible). The window is responsible for calling these methods.

Other methods on the pop-up, including event handlers, should be called normally, with one exception: after calling an event handler on the pop-up, the parent should invoke Manager::pop_action and handle the action itself, where possible (using Manager::close_window to close it). Remaining actions should be added back to the Manager.

Fields

id: WidgetId

parent: WidgetId

direction: Direction

Trait Implementations

impl Clone for Popup

pub fn clone(&self) -> Popup

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Popup

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.