Struct SliverGeometry 

pub struct SliverGeometry {
    pub scroll_extent: f64,
    pub paint_origin: f64,
    pub paint_extent: f64,
    pub layout_extent: f64,
    pub max_paint_extent: f64,
    pub max_scroll_obstruction_extent: f64,
    pub hit_test_extent: f64,
    pub visible: bool,
    pub has_visual_overflow: bool,
    pub scroll_offset_correction: Option<f64>,
    pub cache_extent: f64,
    pub cross_axis_extent: Option<f64>,
}

The amount of space a sliver occupies.

Fields

scroll_extent: f64

Estimated total scrollable extent this sliver has content for.

paint_origin: f64

Visual location of the first visible part relative to the layout position.

paint_extent: f64

Currently visible visual space taken by this sliver.

layout_extent: f64

Distance from the first visible part of this sliver to the first visible part of the next.

max_paint_extent: f64

Estimated total paint extent if remaining paint extent were infinite.

max_scroll_obstruction_extent: f64

Maximum extent by which a pinned sliver can reduce the scrollable area.

hit_test_extent: f64

Distance from where this sliver started painting to the bottom of where it should accept hits.

visible: bool

Whether this sliver should be painted.

has_visual_overflow: bool

Whether this sliver has visual overflow.

scroll_offset_correction: Option<f64>

Non-zero asks the parent to correct the scroll offset and relayout.

cache_extent: f64

Pixels consumed in the remaining cache extent.

cross_axis_extent: Option<f64>

Cross-axis extent, if the sliver reports one.

Implementations

impl SliverGeometry

pub const ZERO: SliverGeometry

A sliver that occupies no space at all.

pub const fn builder() -> SliverGeometryBuilder

Starts geometry with Flutter’s constructor defaults. Extents left out are filled in by SliverGeometryBuilder::build, as Flutter’s constructor fills them.

pub const fn copy_with(self) -> SliverGeometryBuilder

Dart copyWith: a builder holding this geometry’s values, for fields to be replaced.

pub fn is_zero(&self) -> bool

Dart’s geometry == SliverGeometry.zero: whether this geometry occupies no space at all.

pub fn debug_assert_is_valid(&self) -> bool

Asserts that this geometry is internally consistent.

Does nothing if asserts are disabled. Always returns true.

Trait Implementations

impl Clone for SliverGeometry

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SliverGeometry

impl Debug for SliverGeometry

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

Formats the value using the given formatter.

impl Default for SliverGeometry

fn default() -> SliverGeometry

Returns the “default value” for a type.

impl Display for SliverGeometry

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

Formats the value using the given formatter.