Struct LayoutEngine 

pub struct LayoutEngine {
    pub elements: HashMap<String, LayoutRect>,
    /* private fields */
}

Simple layout engine with collision detection

Fields

elements: HashMap<String, LayoutRect>

All placed elements

Implementations

impl LayoutEngine

pub fn new(viewport: Viewport) -> Self

Create a new layout engine

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

Set custom grid size

pub fn snap_to_grid(&self, value: f32) -> f32

Snap a value to the grid

pub fn snap_point(&self, point: Point) -> Point

Snap a point to the grid

pub fn snap_rect(&self, rect: &Rect) -> Rect

Snap a rectangle to the grid

pub fn add(&mut self, id: &str, rect: Rect) -> bool

Add an element to the layout

pub fn add_with_layer(&mut self, id: &str, rect: Rect, layer: i32) -> bool

Add element with layer

pub fn has_collision(&self, new_rect: &LayoutRect) -> bool

Check if a rect would collide with existing elements

pub fn has_collision_on_layer(&self, new_rect: &LayoutRect, layer: i32) -> bool

Check for collision on a specific layer

pub fn find_collisions(&self, rect: &Rect) -> Vec<&LayoutRect>

Get all elements that would overlap with a rect

pub fn remove(&mut self, id: &str) -> Option<LayoutRect>

Remove an element

pub fn get(&self, id: &str) -> Option<&LayoutRect>

Get an element by ID

pub fn all_elements(&self) -> impl Iterator<Item = &LayoutRect>

Get all elements

pub fn elements_by_layer(&self) -> Vec<&LayoutRect>

Get elements sorted by layer (back to front)

pub fn element_at(&self, point: &Point) -> Option<&LayoutRect>

Check if a point is inside any element

pub fn find_free_position(&self, size: Size, start: Point) -> Option<Point>

Find a free position for a rect with given size

pub fn is_within_bounds(&self, rect: &Rect) -> bool

Check if a rect is within the viewport content area

pub fn validate(&self) -> Vec<LayoutError>

Get layout validation errors

pub fn viewport(&self) -> &Viewport

Get the viewport

pub fn clear(&mut self)

Clear all elements

pub fn len(&self) -> usize

Get element count

pub fn is_empty(&self) -> bool

Check if empty

Trait Implementations

impl Debug for LayoutEngine

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

Formats the value using the given formatter.

impl Default for LayoutEngine

fn default() -> Self

Returns the “default value” for a type.