Struct LayerLink 

pub struct LayerLink {
    pub leader_size: Option<Size>,
    /* private fields */
}

An object that a LeaderLayer can register with.

An instance of this class should be provided as the LeaderLayer::link and the FollowerLayer::link properties to cause the FollowerLayer to follow the LeaderLayer.

See also:

• CompositedTransformTarget, the widget that creates a LeaderLayer.
• CompositedTransformFollower, the widget that creates a FollowerLayer.
• RenderLeaderLayer and RenderFollowerLayer, the corresponding render objects.

Fields

leader_size: Option<Size>

The total size of the content of the connected LeaderLayer.

Generally this should be set by the RenderObject that paints on the registered LeaderLayer (for instance a RenderLeaderLayer that shares this link with its followers). This size may be outdated before and during layout.

Implementations

impl LayerLink

pub fn new(app: &mut App) -> Handle<LayerLink>

Creates a link with no leader.

pub fn leader(self: Handle<Self>, app: &App) -> Option<Handle<LeaderLayer>>

The LeaderLayer connected to this link.