Struct NineSlice 

pub struct NineSlice { /* private fields */ }

A source image paired with the insets that split it into nine patches.

Corners keep their natural size, the four edge patches stretch along one axis only, and the center patch stretches along both — so a bordered panel can be resized to any destination size without distorting its corners. The geometry itself lives on NineSliceInsets; this type only carries the image handle so it can be stored inside a deferred DrawCommand.

Implementations

impl NineSlice

Implements image-backed nine-slice drawing and deferred recording.

pub fn from_image(image: HtmlImageElement, border: f64) -> NineSlice

Creates a nine-slice from an image and uniform border insets.

Arguments

• HtmlImageElement - The source image containing the nine patches.
• f64 - The border inset applied to all four edges, in source pixels.

Returns

• NineSlice - The new nine-slice.

pub fn source_rects(&self) -> NineSliceRects

Returns the nine source sub-rectangles for the whole source image.

Returns

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

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

Returns the nine destination sub-rectangles for a destination rect.

Arguments

• Rect - The destination rectangle to split.

Returns

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

pub fn draw_into(&self, context: &CanvasRenderingContext2d, dest: Rect)

Draws the nine-slice into a destination rectangle immediately.

Issues nine drawImage calls against the canvas context, pairing each source patch with its destination sub-rectangle. Uses the canvas transform already in effect, so the caller controls world positioning, rotation and scale.

Arguments

• &CanvasRenderingContext2d - The canvas context.
• Rect - The destination rectangle in current canvas space.

pub fn record( &self, list: &mut DrawList, dest_position: Vector2D, dest_width: f64, dest_height: f64, )

Records the nine-slice into a deferred draw list.

The command carries the image plus the insets rather than the nine resolved sub-rectangles, so the split is recomputed at replay time against whatever destination size the command was recorded with.

Arguments

• &mut DrawList - The draw list to record into.
• Vector2D - The destination top-left position in world space.
• f64 - The destination width in pixels.
• f64 - The destination height in pixels.

impl NineSlice

pub fn get_image(&self) -> HtmlImageElement

pub fn get_mut_image(&mut self) -> &mut HtmlImageElement

pub fn set_image(&mut self, val: HtmlImageElement) -> &mut Self

pub fn get_insets(&self) -> NineSliceInsets

pub fn get_mut_insets(&mut self) -> &mut NineSliceInsets

pub fn set_insets(&mut self, val: NineSliceInsets) -> &mut Self

impl NineSlice

pub fn new(image: HtmlImageElement, insets: NineSliceInsets) -> Self

Trait Implementations

impl Clone for NineSlice

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NineSlice

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

Formats the value using the given formatter.

impl PartialEq for NineSlice

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NineSlice