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(***********************************************************************)
(* *)
(* Active-DVI *)
(* *)
(* Projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 2002 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Lesser General Public License. *)
(* *)
(* Jun Furuse, Didier Rmy and Pierre Weis. *)
(* Contributions by Roberto Di Cosmo, Didier Le Botlan, *)
(* Xavier Leroy, and Alan Schmitt. *)
(* *)
(* Based on Mldvi by Alexandre Miquel. *)
(***********************************************************************)
(* $Id: drawimage.mli,v 1.1 2007/01/18 14:14:35 rousse Exp $ *)
type white_is_transparent = bool;;
(** Specifies wheter white pixels (pixels whose color is 0XFFFFFF)
have to be considered as transparent when drawing an image. *)
type ratiopt =
| ScaleOriginal
(* Leave the image at its original native size. *)
| ScaleAuto
(* Scale to fit requested area. *)
| ScaleCenter
(* Scale as needed to cover the image, keep original ratio and center. *)
| ScaleTop
(* Scale x coords to align to top of the screen, keep original ratio. *)
| ScaleBottom
(* Scale x coords to align to bottom of the screen,
keep original ratio. *)
| ScaleLeft
(* Scale y coords to align to left of the screen, keep original ratio. *)
| ScaleRight
(* Scale y coords to align to right of the screen, keep original ratio. *)
| ScaleTopLeft
| ScaleBottomLeft
| ScaleTopRight
| ScaleBottomRight;;
(** Options to resize images before drawing. *)
(* Blending *)
type blend =
| Normal | Multiply | Screen | Overlay (* | SoftLight | HardLight *)
| ColorDodge | ColorBurn | Darken | Lighten | Difference
| Exclusion (* | Luminosity | Color | Saturation | Hue *);;
type alpha = float;;
(** Alpha channel specification. *)
type image_size = int * int;;
(** The size of an image in pixels. *)
type position = int * int;;
(** The position where to draw the image. *)
type antialias = bool;;
(** Have pixels' color to be antialised when drawing images ? *)
type ps_bbox = int * int * int * int;;
(** The PostScript bounding box of an image as recorded in an
encapsulated PostScript file that contains it. *)
val f : Misc.file_name -> white_is_transparent -> alpha -> blend ->
ps_bbox option ->
ratiopt -> antialias -> image_size -> position -> unit;;
(** [f filename whitetransp alpha blend
(llx, lly, urx, ury) antialias (width, height) (x0, y0)]
draws an eps [filename] with bounding box [(llx,lly,urx,ury)]
in the size [(width, height)] pixels at [x0, y0] (top-left corner).
If [whitetransp] is true, white pixels are treated as transparent.
[alpha] specifies the alpha level of the image.
[blend] is the color blending function for rendering.
[antialias] controls antialiasing mode
*)
val clean_cache : unit -> unit;;
|