Indenting

Changes

@@ -13,6 +13,8 @@ New features:
 * Create structure information for files with -draw
 * Draw can now make paragraphs with -para, -paras
 * Add structure information to -typeset, add -typeset-subformat
+* -typeset can make PDF/UA documents
+* -jpeg, -png and friends can make PDF/UA documents
 
 * = Supported by a grant from NLnet
 

cpdfcommand.ml

@@ -548,7 +548,8 @@ type args =
    mutable verify_single : string option;
    mutable draw_struct_tree : bool;
    mutable image_title : string option;
-   mutable subformat : Cpdfua.subformat option}
+   mutable subformat : Cpdfua.subformat option;
+   mutable indent : float option}
 
 let args =
   {op = None;
@@ -686,7 +687,8 @@ let args =
    verify_single = None;
    draw_struct_tree = false;
    image_title = None;
-   subformat = None}
+   subformat = None;
+   indent = None}
 
 (* Do not reset original_filename or cpdflin or was_encrypted or
 was_decrypted_with_owner or recrypt or producer or creator or path_to_* or
@@ -812,7 +814,8 @@ let reset_arguments () =
   args.verify_single <- None;
   args.draw_struct_tree <- false;
   args.image_title <- None;
-  args.subformat <- None
+  args.subformat <- None;
+  args.indent <- None
 
 (* Prefer a) the one given with -cpdflin b) a local cpdflin, c) otherwise assume
 installed at a system place *)
@@ -1826,6 +1829,7 @@ let () = Cpdfdrawcontrol.getfontname := fun () -> args.fontname
 let () = Cpdfdrawcontrol.getfontsize := fun () -> args.fontsize
 let () = Cpdfdrawcontrol.setfontname := setfont
 let () = Cpdfdrawcontrol.setfontsize := fun s -> args.fontsize <- s
+let () = Cpdfdrawcontrol.getindent := fun () -> args.indent
 
 let setlistimagesjson () =
   setop ListImages ();
@@ -2868,6 +2872,7 @@ let specs =
    ("-stext", Arg.String Cpdfdrawcontrol.addspecialtext, " Draw text with %specials");
    ("-para", Arg.String Cpdfdrawcontrol.addpara, " Add a paragraph of text");
    ("-paras", Arg.String Cpdfdrawcontrol.addparas, " Add paragraphs of text, splitting on newlines");
+   ("-indent", Arg.Float (fun f -> args.indent <- Some f), " Set indent for paragraphs");
    ("-leading", Arg.Float (fun f -> Cpdfdrawcontrol.addop (Cpdfdraw.Leading f)), " Set leading");
    ("-charspace", Arg.Float (fun f -> Cpdfdrawcontrol.addop (Cpdfdraw.CharSpace f)), " Set character spacing");
    ("-wordspace", Arg.Float (fun f -> Cpdfdrawcontrol.addop (Cpdfdraw.WordSpace f)), " Set word space");

cpdfdraw.ml

@@ -50,7 +50,7 @@ type drawops =
   | TextSection of drawops list
   | Text of string
   | SpecialText of string
-  | Para of justification * float * string list
+  | Para of float option * justification * float * string list
   | Newline
   | Leading of float
   | CharSpace of float
@@ -266,20 +266,24 @@ type structdata =
 let structdata = ref []
 
 (* TODO: Use Uuseg for proper unicode segmentation. *)
-let format_paragraph j w s =
+let format_paragraph indent j w s =
+  Printf.printf "indent = %f\n" indent;
   let ss = String.split_on_char ' ' s in
   let rs_and_widths = ref (map runs_of_utf8 ss) in
   let space_runs, space_width = runs_of_utf8 " " in
   let remaining = ref w in
   let allops = ref [] in
   let ops = ref [] in
+  let first = ref true in
+  let firstloop = ref true in
   let justify ops =
     match j with
-    | Left -> ops
+    | Left -> (if !first then [Pdfops.Op_Td (~-.indent, 0.)] else []) @ ops @ (if !first then [Pdfops.Op_Td (indent, 0.)] else [])
     | Right -> [Pdfops.Op_Td (~-.(!remaining), 0.)] @ ops @ [Pdfops.Op_Td (!remaining, 0.)]
     | Centre -> [Pdfops.Op_Td (~-.(!remaining) /. 2., 0.)] @ ops @ [Pdfops.Op_Td (!remaining /. 2., 0.)]
   in
     while !rs_and_widths <> [] do
+      if !firstloop then (remaining -.= indent; clear firstloop);
       let word, word_width = hd !rs_and_widths in
         if !remaining = w then
           (* If current line empty, output word. *)
@@ -300,9 +304,10 @@ let format_paragraph j w s =
           (* If current line not empty, and not enough space, emit newline. *)
           begin
             allops =| rev (Pdfops.Op_T'::justify !ops);
+            clear first;
             ops := [];
-            remaining := w
-          end
+            remaining := w;
+          end;
     done;
   allops =| rev (Pdfops.Op_T'::justify !ops);
   flatten (rev !allops)
@@ -427,13 +432,13 @@ let rec ops_of_drawop struct_tree dryrun pdf endpage filename bates batespad num
       let s = process_specials pdf endpage filename bates batespad num page s in
       if dryrun then iter (fun c -> Hashtbl.replace (res ()).current_fontpack_codepoints c ()) (Pdftext.codepoints_of_utf8 s);
         fst (runs_of_utf8 s)
-  | Para (j, w, s) ->
+  | Para (indent, j, w, s) ->
       if dryrun then iter (iter (fun c -> Hashtbl.replace (res ()).current_fontpack_codepoints c ())) (map Pdftext.codepoints_of_utf8 s);
       let first = ref true in
         flatten
           (map
             (function para ->
-               (if not !first then ([Pdfops.Op_T']) else (clear first; [])) @ format_paragraph j w para)
+               (if not !first && indent = None then ([Pdfops.Op_T']) else (clear first; [])) @ format_paragraph (if indent <> None && not !first then unopt indent else 0.) j w para)
             s)
   | Leading f -> [Pdfops.Op_TL f]
   | CharSpace f -> [Pdfops.Op_Tc f]

cpdfdraw.mli

@@ -45,7 +45,7 @@ type drawops =
   | TextSection of drawops list
   | Text of string
   | SpecialText of string
-  | Para of justification * float * string list
+  | Para of float option * justification * float * string list
   | Newline
   | Leading of float
   | CharSpace of float

cpdfdrawcontrol.ml

@@ -10,6 +10,7 @@ let setfontname = ref (fun _ -> Printf.printf "BAD *****\n%!")
 let setfontsize = ref (fun _ -> Printf.printf "BAD ******\n%!")
 let loadttf = ref (fun _ -> Printf.printf "BAD *******\n%!")
 let setembedstd14 = ref (fun _ _ -> Printf.printf "BAD ********\n%!")
+let getindent = ref (fun () -> Printf.printf "BAD *********\n%!"; None)
 
 let ttfs = null_hash ()
 
@@ -370,7 +371,7 @@ let addpara s =
   add_default_fontpack (!getfontname ());
   addop (Cpdfdraw.Font (!getfontname (), !getfontsize ()));
   let j, w, s = jws s in
-    addop (Cpdfdraw.Para (j, w, [s]))
+    addop (Cpdfdraw.Para (None, j, w, [s]))
 
 let rec split_on_newlines a = function
   | 0x005c::0x006e::t -> rev a::split_on_newlines [] t
@@ -386,4 +387,5 @@ let addparas s =
   addop (Cpdfdraw.Font (!getfontname (), !getfontsize ()));
   let j, w, s = jws s in
   let splits = split_on_newlines s in
-    addop (Cpdfdraw.Para (j, w, splits))
+  let indent = !getindent () in
+    addop (Cpdfdraw.Para (indent, j, w, splits))

cpdfdrawcontrol.mli

@@ -3,6 +3,7 @@
 val embed_font : (unit -> Cpdfembed.cpdffont) ref
 val getfontname : (unit -> string) ref
 val getfontsize : (unit -> float) ref
+val getindent : (unit -> float option) ref
 val setfontname : (string -> unit) ref
 val setfontsize : (float -> unit) ref
 val setdrawing : (unit -> unit) ref