Struct ScrollNode 

pub struct ScrollNode { /* private fields */ }

Re-export the UI crate so applications can depend on a single crate. ScrollNode layout modifier that physically moves content based on scroll position. This is the component that actually reads ScrollState and applies the visual offset.

Implementations

impl ScrollNode

pub fn new( state: ScrollState, is_vertical: bool, reverse_scrolling: bool, ) -> ScrollNode

pub fn state(&self) -> &ScrollState

Returns a reference to the ScrollState.

Trait Implementations

impl DelegatableNode for ScrollNode

fn node_state(&self) -> &NodeState

fn aggregate_child_capabilities(&self) -> NodeCapabilities

impl LayoutModifierNode for ScrollNode

fn measure( &self, _context: &mut dyn ModifierNodeContext, measurable: &dyn Measurable, constraints: Constraints, ) -> LayoutModifierMeasureResult

Measures the wrapped content and returns both the size this modifier occupies and where the wrapped content should be placed.

fn min_intrinsic_width(&self, measurable: &dyn Measurable, height: f32) -> f32

Returns the minimum intrinsic width of this modifier node.

fn max_intrinsic_width(&self, measurable: &dyn Measurable, height: f32) -> f32

Returns the maximum intrinsic width of this modifier node.

fn min_intrinsic_height(&self, measurable: &dyn Measurable, width: f32) -> f32

Returns the minimum intrinsic height of this modifier node.

fn max_intrinsic_height(&self, measurable: &dyn Measurable, width: f32) -> f32

Returns the maximum intrinsic height of this modifier node.

fn create_measurement_proxy(&self) -> Option<Box<dyn MeasurementProxy>>

Creates a measurement proxy for this node that can perform measurement without holding a borrow to the modifier chain.

impl ModifierNode for ScrollNode

fn on_attach(&mut self, context: &mut dyn ModifierNodeContext)

fn on_detach(&mut self)

fn as_layout_node(&self) -> Option<&(dyn LayoutModifierNode + 'static)>

Returns this node as a layout modifier if it implements the trait.

fn as_layout_node_mut( &mut self, ) -> Option<&mut (dyn LayoutModifierNode + 'static)>

Returns this node as a mutable layout modifier if it implements the trait.

fn on_reset(&mut self)

fn as_draw_node(&self) -> Option<&(dyn DrawModifierNode + 'static)>

Returns this node as a draw modifier if it implements the trait.

fn as_draw_node_mut(&mut self) -> Option<&mut (dyn DrawModifierNode + 'static)>

Returns this node as a mutable draw modifier if it implements the trait.

fn as_pointer_input_node(&self) -> Option<&(dyn PointerInputNode + 'static)>

Returns this node as a pointer-input modifier if it implements the trait.

fn as_pointer_input_node_mut( &mut self, ) -> Option<&mut (dyn PointerInputNode + 'static)>

Returns this node as a mutable pointer-input modifier if it implements the trait.

fn as_semantics_node(&self) -> Option<&(dyn SemanticsNode + 'static)>

Returns this node as a semantics modifier if it implements the trait.

fn as_semantics_node_mut( &mut self, ) -> Option<&mut (dyn SemanticsNode + 'static)>

Returns this node as a mutable semantics modifier if it implements the trait.

fn as_focus_node(&self) -> Option<&(dyn FocusNode + 'static)>

Returns this node as a focus modifier if it implements the trait.

fn as_focus_node_mut(&mut self) -> Option<&mut (dyn FocusNode + 'static)>

Returns this node as a mutable focus modifier if it implements the trait.

fn for_each_delegate<'b>( &'b self, _visitor: &mut dyn FnMut(&'b (dyn ModifierNode + 'static)), )

Visits every delegate node owned by this modifier.

fn for_each_delegate_mut<'b>( &'b mut self, _visitor: &mut dyn FnMut(&'b mut (dyn ModifierNode + 'static)), )

Visits every delegate node mutably.