pub(all) enum FlowAlignment {
  Start
  Center
  End
  SpaceBetween
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) enum FlowDirection {
  Horizontal
  Vertical
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct GridSpec {
  columns : Int
  rows : Int
  gap_x : Int
  gap_y : Int
  padding : 
@dgmxjj/moonbit-posterkit/core.EdgeInsets
EdgeInsets
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) enum HorizontalAlign {
  Start
  Center
  End
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct LayoutEnvelope {
  content : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect
  requested : 
@dgmxjj/moonbit-posterkit/core.Size
Size
  constrained : 
@dgmxjj/moonbit-posterkit/core.Size
Size
  overflow : 
@dgmxjj/moonbit-posterkit/core.RectOverflow
RectOverflow
  valid : Bool
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct LayoutRequest {
  region : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect
  min_width : Int
  min_height : Int
  max_width : Int
  max_height : Int
  gap : Int
  padding : 
@dgmxjj/moonbit-posterkit/core.EdgeInsets
EdgeInsets
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) struct LayoutResult {
  frames : Array[
@dgmxjj/moonbit-posterkit/scene.Rect
Rect]
  warnings : Array[LayoutWarning]
  used : 
@dgmxjj/moonbit-posterkit/core.Size
Size
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) enum LayoutWarning {
  NegativeGap(value~ : Int)
  NegativeHeight(index~ : Int, value~ : Int)
  ClippedChild(index~ : Int, overflow~ : 
@dgmxjj/moonbit-posterkit/core.RectOverflow
RectOverflow)
  EmptyRegion
  InvalidGrid
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

pub(all) enum VerticalAlign {
  Top
  Middle
  Bottom
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

fn anchor(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, size~ : 
@dgmxjj/moonbit-posterkit/core.Size
Size, h_align~ : HorizontalAlign, v_align~ : VerticalAlign, margin~ : 
@dgmxjj/moonbit-posterkit/core.EdgeInsets
EdgeInsets) -> 
@dgmxjj/moonbit-posterkit/scene.Point
Point

fn content_region(region : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, padding : 
@dgmxjj/moonbit-posterkit/core.EdgeInsets
EdgeInsets) -> 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect

fn distribute_horizontal(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, item_widths~ : Array[Int], alignment~ : FlowAlignment) -> Array[
@dgmxjj/moonbit-posterkit/scene.Rect
Rect]

fn fit_rect(source~ : 
@dgmxjj/moonbit-posterkit/core.Size
Size, target~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, mode~ : 
@dgmxjj/moonbit-posterkit/scene.ImageFit
ImageFit) -> 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect

fn grid(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, spec~ : GridSpec) -> Array[
@dgmxjj/moonbit-posterkit/scene.Rect
Rect]

fn layout_envelope(request : LayoutRequest) -> LayoutEnvelope

fn layout_request_summary(request : LayoutRequest) -> String

fn measure_grid(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, spec~ : GridSpec, constraints~ : 
@dgmxjj/moonbit-posterkit/core.Constraints
Constraints) -> LayoutResult

fn measure_stack_vertical(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, item_heights~ : Array[Int], gap~ : Int, constraints~ : 
@dgmxjj/moonbit-posterkit/core.Constraints
Constraints) -> LayoutResult

fn rect_overflow(rect : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, region : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect) -> 
@dgmxjj/moonbit-posterkit/core.RectOverflow
RectOverflow

fn split_horizontal(region : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, ratio_percent : Int) -> (
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect)

fn split_vertical(region : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, ratio_percent : Int) -> (
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect)

fn stack_horizontal(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, item_widths~ : Array[Int], gap~ : Int) -> Array[
@dgmxjj/moonbit-posterkit/scene.Rect
Rect]

fn stack_vertical(region~ : 
@dgmxjj/moonbit-posterkit/scene.Rect
Rect, item_heights~ : Array[Int], gap~ : Int) -> Array[
@dgmxjj/moonbit-posterkit/scene.Rect
Rect]

fn warning_code(warning : LayoutWarning) -> String

fn warnings_text(warnings : Array[LayoutWarning]) -> String