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pango.ml
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pango.ml
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(**************************************************************************)
(* Lablgtk *)
(* *)
(* This program is free software; you can redistribute it *)
(* and/or modify it under the terms of the GNU Library General *)
(* Public License as published by the Free Software Foundation *)
(* version 2, with the exception described in file COPYING which *)
(* comes with the library. *)
(* *)
(* This program is distributed in the hope that it will be useful, *)
(* but WITHOUT ANY WARRANTY; without even the implied warranty of *)
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *)
(* GNU Library General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU Library General *)
(* Public License along with this program; if not, write to the *)
(* Free Software Foundation, Inc., 59 Temple Place, Suite 330, *)
(* Boston, MA 02111-1307 USA *)
(* *)
(* *)
(**************************************************************************)
(* $Id$ *)
open Gaux
open Gobject
type context = [`pangocontext] obj
type font = [`pangofont] obj
type font_map = [`pangofontmap] obj
type font_description
type font_metrics
type language
type layout = [`pangolayout] obj
type units = int
type rectangle = {x:int; y:int; width:int; height:int}
external _pango_init : unit -> unit = "ml_pango_init"
let () = _pango_init ()
module Tags = struct
type style =
[ `NORMAL | `OBLIQUE | `ITALIC ]
type weight_internal =
[ `ULTRALIGHT | `LIGHT | `NORMAL |`BOLD | `ULTRABOLD |`HEAVY ]
type weight = [ weight_internal | `CUSTOM of int]
type variant =
[ `NORMAL | `SMALL_CAPS ]
type stretch =
[ `ULTRA_CONDENSED | `EXTRA_CONDENSED
| `CONDENSED | `SEMI_CONDENSED
| `NORMAL | `SEMI_EXPANDED
| `EXPANDED | `EXTRA_EXPANDED | `ULTRA_EXPANDED ]
type scale =
[ `XX_SMALL | `X_SMALL | `SMALL | `MEDIUM
| `LARGE | `X_LARGE | `XX_LARGE
| `CUSTOM of float ]
external scale_to_float : scale -> float = "ml_Pango_scale_val"
type underline = [ `NONE | `SINGLE | `DOUBLE | `LOW ]
type wrap_mode = [ `WORD | `CHAR | `WORD_CHAR ]
type ellipsize_mode = [ `NONE | `START | `MIDDLE | `END ]
open Gpointer
external _get_tables : unit ->
style variant_table
* weight_internal variant_table
* variant variant_table
* stretch variant_table
* underline variant_table
* wrap_mode variant_table
* ellipsize_mode variant_table
= "ml_pango_get_tables"
let style, weight, variant, stretch, underline, wrap_mode,
ellipsize_mode = _get_tables ()
let weight_to_int (w : weight) =
match w with
| `CUSTOM b -> b
| #weight_internal as w -> encode_variant weight w
end
module Font = struct
open Tags
external from_string : string -> font_description =
"ml_pango_font_description_from_string"
external to_string : font_description -> string =
"ml_pango_font_description_to_string"
external copy : font_description -> font_description =
"ml_pango_font_description_copy"
external set_family : font_description -> string -> unit =
"ml_pango_font_description_set_family"
external get_family : font_description -> string =
"ml_pango_font_description_get_family"
external set_style : font_description -> style -> unit =
"ml_pango_font_description_set_style"
external get_style : font_description -> style =
"ml_pango_font_description_get_style"
external set_variant : font_description -> variant -> unit =
"ml_pango_font_description_set_variant"
external get_variant : font_description -> variant =
"ml_pango_font_description_get_variant"
external set_weight : font_description -> int -> unit =
"ml_pango_font_description_set_weight"
let set_weight fd w = set_weight fd (weight_to_int w)
external get_weight : font_description -> int =
"ml_pango_font_description_get_weight"
external set_stretch : font_description -> stretch -> unit =
"ml_pango_font_description_set_stretch"
external get_stretch : font_description -> stretch =
"ml_pango_font_description_get_stretch"
external set_size : font_description -> int -> unit =
"ml_pango_font_description_set_size"
external get_size : font_description -> int =
"ml_pango_font_description_get_size"
external set_absolute_size : font_description -> float -> unit =
"ml_pango_font_description_set_absolute_size"
external get_size_is_absolute : font_description -> bool =
"ml_pango_font_description_get_size_is_absolute"
let modify fd ?family ?style ?variant ?weight ?stretch ?size ?absolute_size () =
let may_set set_x x = may x ~f:(set_x fd) in
may_set set_family family;
may_set set_style style;
may_set set_stretch stretch;
may_set set_variant variant;
may_set set_weight weight;
may_set set_size size;
may_set set_absolute_size absolute_size
external get_metrics : font -> language -> font_metrics =
"ml_pango_font_get_metrics"
external get_ascent : font_metrics -> units =
"ml_pango_font_metrics_get_ascent"
external get_descent : font_metrics -> units =
"ml_pango_font_metrics_get_descent"
external get_approximate_char_width : font_metrics -> units =
"ml_pango_font_metrics_get_approximate_char_width"
external get_approximate_digit_width : font_metrics -> units =
"ml_pango_font_metrics_get_approximate_digit_width"
end
module FontMap = struct
external load_font : font_map -> context -> font_description -> font
= "ml_pango_font_map_load_font"
end
module Language = struct
external from_string : string -> language = "ml_pango_language_from_string"
external to_string : language -> string = "ml_pango_language_to_string"
external matches : language -> string -> bool = "ml_pango_language_matches"
let none : language = Obj.magic Gpointer.boxed_null
end
module Context = struct
let cast w : context = Gobject.try_cast w "PangoContext"
external get_font_description : context -> font_description =
"ml_pango_context_get_font_description"
external set_font_description : context -> font_description -> unit =
"ml_pango_context_set_font_description"
external get_language : context -> language =
"ml_pango_context_get_language"
external set_language : context -> language -> unit =
"ml_pango_context_set_language"
external load_font : context -> font_description -> font =
"ml_pango_context_load_font"
external load_fontset : context -> font_description -> language -> font =
"ml_pango_context_load_fontset"
external get_metrics :
context -> font_description -> language option -> font_metrics =
"ml_pango_context_get_metrics"
end
external scale : unit -> int = "ml_PANGO_SCALE"
let scale = scale ()
module Layout = struct
open Tags
let cast w : layout = Gobject.try_cast w "PangoLayout"
external create : context -> layout = "ml_pango_layout_new"
external copy : layout -> layout = "ml_pango_layout_copy"
external get_context : layout -> context = "ml_pango_layout_get_context"
external get_text : layout -> string = "ml_pango_layout_get_text"
external set_text : layout -> string -> unit = "ml_pango_layout_set_text"
external set_markup : layout -> string -> unit = "ml_pango_layout_set_markup"
external set_markup_with_accel : layout -> string -> Glib.unichar -> unit
= "ml_pango_layout_set_markup_with_accel"
external get_font_description : layout -> font_description
= "ml_pango_layout_get_font_description"
external set_font_description : layout -> font_description -> unit
= "ml_pango_layout_set_font_description"
external get_width : layout -> int = "ml_pango_layout_get_width"
external set_width : layout -> int -> unit = "ml_pango_layout_set_width"
external get_indent : layout -> int = "ml_pango_layout_get_indent"
external set_indent : layout -> int -> unit = "ml_pango_layout_set_indent"
external get_spacing : layout -> int = "ml_pango_layout_get_spacing"
external set_spacing : layout -> int -> unit = "ml_pango_layout_set_spacing"
external get_wrap : layout -> wrap_mode = "ml_pango_layout_get_wrap"
external set_wrap : layout -> wrap_mode -> unit = "ml_pango_layout_set_wrap"
external get_justify : layout -> bool = "ml_pango_layout_get_justify"
external set_justify : layout -> bool -> unit = "ml_pango_layout_set_justify"
external get_single_paragraph_mode : layout -> bool
= "ml_pango_layout_get_single_paragraph_mode"
external set_single_paragraph_mode : layout -> bool -> unit
= "ml_pango_layout_set_single_paragraph_mode"
external context_changed : layout -> unit = "ml_pango_layout_context_changed"
external get_size : layout -> units * units = "ml_pango_layout_get_size"
external get_pixel_size : layout -> int * int
= "ml_pango_layout_get_pixel_size"
external get_extent : layout -> rectangle = "ml_pango_layout_get_extent"
external get_pixel_extent : layout -> rectangle
= "ml_pango_layout_get_pixel_extent"
external index_to_pos : layout -> int -> rectangle
= "ml_pango_layout_index_to_pos"
external xy_to_index : layout -> x:int -> y:int -> int * int * bool
= "ml_pango_layout_xy_to_index"
external set_ellipsize : layout -> ellipsize_mode -> unit
= "ml_pango_layout_set_ellipsize"
external get_ellipsize : layout -> ellipsize_mode
= "ml_pango_layout_get_ellipsize"
end