package toffee

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package toffee
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Source file layout_output.ml

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type t = {
  size : float Geometry.size;
  content_size : float Geometry.size;
  first_baselines : float option Geometry.point;
  top_margin : Collapsible_margin_set.t;
  bottom_margin : Collapsible_margin_set.t;
  margins_can_collapse_through : bool;
}

let make ~size ~content_size ~first_baselines ~top_margin ~bottom_margin
    ~margins_can_collapse_through =
  {
    size;
    content_size;
    first_baselines;
    top_margin;
    bottom_margin;
    margins_can_collapse_through;
  }

let size t = t.size
let content_size t = t.content_size
let first_baselines t = t.first_baselines
let top_margin t = t.top_margin
let bottom_margin t = t.bottom_margin
let margins_can_collapse_through t = t.margins_can_collapse_through

let hidden =
  {
    size = Geometry.Size.zero;
    content_size = Geometry.Size.zero;
    first_baselines = Geometry.(Point.none);
    top_margin = Collapsible_margin_set.zero;
    bottom_margin = Collapsible_margin_set.zero;
    margins_can_collapse_through = false;
  }

let default =
  {
    size = Geometry.Size.zero;
    content_size = Geometry.Size.zero;
    first_baselines = Geometry.(Point.none);
    top_margin = Collapsible_margin_set.zero;
    bottom_margin = Collapsible_margin_set.zero;
    margins_can_collapse_through = false;
  }

let from_outer_size size =
  {
    size;
    (* Match Taffy: when only the outer size is known, content size is zero. *)
    content_size = Geometry.Size.zero;
    first_baselines = Geometry.(Point.none);
    top_margin = Collapsible_margin_set.zero;
    bottom_margin = Collapsible_margin_set.zero;
    margins_can_collapse_through = false;
  }

let from_sizes_and_baselines size content_size first_baselines =
  {
    size;
    content_size;
    first_baselines;
    top_margin = Collapsible_margin_set.zero;
    bottom_margin = Collapsible_margin_set.zero;
    margins_can_collapse_through = false;
  }

let to_string t =
  Printf.sprintf
    "LayoutOutput { size: %s; content_size: %s; margins_can_collapse_through: \
     %b }"
    (Geometry.Size.to_string Float.to_string t.size)
    (Geometry.Size.to_string Float.to_string t.content_size)
    t.margins_can_collapse_through

let compare a b =
  let cmp = Geometry.Size.compare Float.compare a.size b.size in
  if cmp <> 0 then cmp
  else
    let cmp =
      Geometry.Size.compare Float.compare a.content_size b.content_size
    in
    if cmp <> 0 then cmp
    else
      let cmp =
        Geometry.Point.compare
          (Option.compare Float.compare)
          a.first_baselines b.first_baselines
      in
      if cmp <> 0 then cmp
      else
        let cmp = Collapsible_margin_set.compare a.top_margin b.top_margin in
        if cmp <> 0 then cmp
        else
          let cmp =
            Collapsible_margin_set.compare a.bottom_margin b.bottom_margin
          in
          if cmp <> 0 then cmp
          else
            Bool.compare a.margins_can_collapse_through
              b.margins_can_collapse_through

let equal a b = compare a b = 0
let pp fmt t = Format.pp_print_string fmt (to_string t)