Module Ftlow

Almost all of the functions are just interpretation of functions of the freetype library. See the documents of the freetype library.

type library
val init : unit -> library
val close : library -> unit
type face
type face_info = {
num_faces : int;
num_glyphs : int;
family_name : string;
style_name : string;
has_horizontal : bool;
has_vertical : bool;
has_kerning : bool;
is_scalable : bool;
is_sfnt : bool;
is_fixed_width : bool;
has_fixed_sizes : bool;
has_fast_glyphs : bool;
has_glyph_names : bool;
has_multiple_masters : bool;
}
val new_face : library -> string -> int -> face
val face_info : face -> face_info
val done_face : face -> unit
val get_num_glyphs : face -> int
val set_char_size : face -> int -> int -> int -> int -> unit
val set_pixel_sizes : face -> int -> int -> unit
type charmap = {
platform_id : int;
encoding_id : int;
}
val get_charmaps : face -> charmap list
val set_charmap : face -> charmap -> unit
val get_char_index : face -> int -> int
type render_mode =
| Render_Normal(*

default

*)
| Render_Mono
type load_flag =
| Load_no_scale
| Load_no_hinting
val load_glyph : face -> int -> load_flag list -> int * int
val load_char : face -> int -> load_flag list -> int * int
val render_glyph_of_face : face -> render_mode -> unit
val render_glyph : face -> int -> load_flag list -> render_mode -> int * int
val render_char : face -> int -> load_flag list -> render_mode -> int * int
val set_transform : face -> (int * int * int * int) -> (int * int) -> unit
type bitmap_info = {
bitmap_left : int;
bitmap_top : int;
bitmap_width : int;
bitmap_height : int;
}
val get_bitmap_info : face -> bitmap_info
val read_bitmap : face -> int -> int -> int
type bbox = {
xmin : int;(*

26.6

*)
ymin : int;(*

26.6

*)
xmax : int;(*

26.6

*)
ymax : int;(*

26.6

*)
}

glyph metrics

type bearing_advance = {
bearingx : int;(*

26.6

*)
bearingy : int;(*

26.6

*)
advance : int;(*

26.6

*)
}
type glyph_metrics = {
gm_width : int;(*

26.6

*)
gm_height : int;(*

26.6

*)
gm_hori : bearing_advance;
gm_vert : bearing_advance;
}
val get_glyph_metrics : face -> glyph_metrics
type size_metrics = {
x_ppem : int;
y_ppem : int;
x_scale : int;(*

16.16

*)
y_scale : int;(*

16.16

*)
}

size metrics

val get_size_metrics : face -> size_metrics
type outline_tag =
| On_point
| Off_point_conic
| Off_point_cubic

outline info

type outline_contents = {
n_contours : int;
n_points : int;
points : (int * int) array;
tags : outline_tag array;
contours : int array;
}
val get_outline_contents : face -> outline_contents