Enum CanvasBackground 

pub enum CanvasBackground {
    None,
    Dots(PatternConfig),
    Grid(PatternConfig),
    Crosshatch(PatternConfig),
}

Background pattern for an infinite canvas.

Set via kit.set_background() or kit.with_background(). Drawn automatically by kit.element() before the user’s render callback.

Variants

None

No background pattern.

Dots(PatternConfig)

Dot grid at regular spacing.

Grid(PatternConfig)

Horizontal + vertical lines.

Crosshatch(PatternConfig)

Diagonal lines at ±45°.

Implementations

impl CanvasBackground

pub fn dots() -> Self

Dot grid with defaults: spacing=50, light gray, size=2.

pub fn grid() -> Self

Line grid with defaults: spacing=50, light gray, size=1.

pub fn crosshatch() -> Self

Crosshatch with defaults: spacing=40, light gray, size=1.

pub fn with_spacing(self, spacing: f32) -> Self

Customize spacing.

pub fn with_color(self, color: Color) -> Self

Customize color.

pub fn with_size(self, size: f32) -> Self

Customize dot size or line width.

pub fn with_zoom_adaptive(self, threshold: f32, coarse_factor: u32) -> Self

Enable zoom-adaptive rendering.

Below threshold zoom, show every coarse_factor-th element.

impl CanvasBackground

pub fn draw( &self, ctx: &mut dyn DrawContext, viewport: &CanvasViewport, screen_w: f32, screen_h: f32, )

Draw the background pattern for the visible viewport region.

Called with the viewport transform already pushed on DrawContext. screen_w / screen_h come from CanvasBounds.

Trait Implementations

impl Clone for CanvasBackground

fn clone(&self) -> CanvasBackground

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CanvasBackground

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

Formats the value using the given formatter.