Enum conrod::widget::MaybeParent

pub enum MaybeParent {
    None,
    Some(Id),
    Unspecified,
}

The builder argument for the Widget's parent.

Variants

None

The user specified the widget should not have any parents, so the Root will be used.

Some(Id)

The user gave a specific parent widget.

Unspecified

No parent widget was specified, so we will assume they want the last parent.

Methods

impl MaybeParent

pub fn get_unchecked(&self, ui: &Ui, x_pos: Position, y_pos: Position) -> Id

Convert the MaybeParent into an Option.

If Unspecified, check the positioning to retrieve the Id from there.

If None, the Ui's window widget will be used.

Note: This method does not check whether or not using the window widget as the parent would cause a cycle. If it is important that the inferred parent should not cause a cycle, use get instead.

pub fn get(     &self,     id: Id,     ui: &Ui,     x_pos: Position,     y_pos: Position ) -> Option<Id>

The same as get_unchecked, but checks whether or not the widget that we're inferring the parent for is the Ui's window (which cannot have a parent, without creating a cycle).

Trait Implementations

impl Copy for MaybeParent

impl Clone for MaybeParent

fn clone(&self) -> MaybeParent

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MaybeParent

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for MaybeParent

fn eq(&self, other: &MaybeParent) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &MaybeParent) -> bool

This method tests for !=.