Struct TextParentData 

pub struct TextParentData {
    pub span: Option<Rc<dyn PlaceholderSpan>>,
    /* private fields */
}

Parent data used by RenderParagraph and RenderEditable to annotate inline contents (such as WidgetSpans) with.

Fields

span: Option<Rc<dyn PlaceholderSpan>>

The PlaceholderSpan associated with this render child.

This field is usually set by a ParentDataWidget, and is typically not None when perform_layout is called.

Implementations

impl TextParentData

pub fn offset(&self) -> Option<Offset>

The offset at which to paint the child in the parent’s coordinate system.

A None value indicates this inline widget is not laid out. For instance, when the inline widget has never been laid out, or the inline widget is ellipsized away.

Trait Implementations

impl ContainerParentDataMixin for TextParentData

type ChildType = AnyRenderBox

The type-erased handle of a child in the list. AnyRenderBox for a box container.

fn container_parent_data(&self) -> &ContainerParentData<AnyRenderBox>

Mixin field access.

fn container_parent_data_mut( &mut self, ) -> &mut ContainerParentData<AnyRenderBox>

See container_parent_data.

fn previous_sibling(&self) -> Option<Self::ChildType>

The previous sibling in the parent’s child list.

fn set_previous_sibling(&mut self, value: Option<Self::ChildType>)

Sets previous_sibling.

fn next_sibling(&self) -> Option<Self::ChildType>

The next sibling in the parent’s child list.

fn set_next_sibling(&mut self, value: Option<Self::ChildType>)

Sets next_sibling.

fn detach(&mut self)

Clear the sibling pointers.

impl Debug for TextParentData

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

Formats the value using the given formatter.

impl Default for TextParentData

fn default() -> Self

Returns the “default value” for a type.

impl Display for TextParentData

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

Formats the value using the given formatter.

impl ParentData for TextParentData

fn detach(&mut self)

Called when the render object is removed from the tree.

fn provide(&self, id: TypeId) -> Option<&dyn Any>

The half of this parent data whose type is id, if it embeds one.

fn provide_mut(&mut self, id: TypeId) -> Option<&mut dyn Any>

See provide; mirrors it exactly.