Struct NineSliceInsets 

pub struct NineSliceInsets { /* private fields */ }

The four per-edge border insets that carve an image into nine patches.

This is the pure geometry half of a nine-slice: it holds no image handle, so the split can be computed and tested without a DOM. Insets are clamped so left + right never exceeds the source width and top + bottom never exceeds the source height; a degenerate center patch collapses to zero size rather than inverting.

Implementations

impl NineSliceInsets

Implements the nine-slice geometry math for NineSliceInsets.

All methods here are pure functions of the insets and the rectangle being split: no canvas context, no image handle, no DOM. That is what makes the split verifiable on the host, and it is the same math NineSlice::draw_into and NineSlice::record reuse.

pub fn source_rects(&self, source: Rect) -> NineSliceRects

Splits a source rectangle into its nine sub-rectangles.

The insets are clamped against the source size so the nine results always tile the source exactly: the two horizontal insets share the available width and the two vertical insets share the available height, with the center taking whatever remains.

Arguments

• Rect - The full source rectangle to split.

Returns

• NineSliceRects - The nine source sub-rectangles in reading order.

pub fn dest_rects(&self, dest: Rect) -> NineSliceRects

Splits a destination rectangle into its nine sub-rectangles.

Corners and edges keep their natural pixel size taken from the insets, and the center absorbs all remaining destination space, so the nine results tile the destination exactly. When the destination is smaller than the combined borders the center collapses to zero width and/or height instead of going negative.

Arguments

• Rect - The full destination rectangle to split.

Returns

• NineSliceRects - The nine destination sub-rectangles in reading order.

impl NineSliceInsets

pub fn get_left(&self) -> f64

pub fn get_mut_left(&mut self) -> &mut f64

pub fn set_left(&mut self, val: f64) -> &mut Self

pub fn get_right(&self) -> f64

pub fn get_mut_right(&mut self) -> &mut f64

pub fn set_right(&mut self, val: f64) -> &mut Self

pub fn get_top(&self) -> f64

pub fn get_mut_top(&mut self) -> &mut f64

pub fn set_top(&mut self, val: f64) -> &mut Self

pub fn get_bottom(&self) -> f64

pub fn get_mut_bottom(&mut self) -> &mut f64

pub fn set_bottom(&mut self, val: f64) -> &mut Self

impl NineSliceInsets

pub fn new(left: f64, right: f64, top: f64, bottom: f64) -> Self

Trait Implementations

impl Clone for NineSliceInsets

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 NineSliceInsets

impl Debug for NineSliceInsets

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

Formats the value using the given formatter.

impl Default for NineSliceInsets

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for NineSliceInsets

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NineSliceInsets