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First dot leader implementation

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John Whitington
2024-12-03 17:14:37 +00:00
parent 2f87b33317
commit 3ba639824c
2 changed files with 14 additions and 9 deletions
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2
cpdfcommand.ml
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@ -2922,7 +2922,7 @@ let specs =
("-toc-no-bookmark",
Arg.Unit settocnobookmark,
" Don't add the table of contents to the bookmarks");
("-toc-dot-leader",
("-toc-dot-leaders",
Arg.Unit (fun () -> args.dot_leader <- true),
" Add a dot leader to TOC entries");
("-typeset",

21
cpdftoc.ml
View File

@ -95,9 +95,16 @@ let used pdf fastrefnums labels title marks =
codepoints
(* Fill the space with a small space, maybe some dots, then maybe a final tiny space *)
(* TODO Test to make sure a title shortened with dots does not gain any leader dots through this mechanism *)
let make_dots space =
[Cpdftype.HGlue space]
let make_dots space fontpack fontsize =
let dots_width, dots =
let dotruns = of_utf8 fontpack fontsize "." in
let dotwidth = width_of_runs dotruns in
let runs = flatten (many dotruns (int_of_float (floor (space /. dotwidth)))) in
(width_of_runs runs, runs)
in
let right_space = space -. dots_width in
let left_space = space -. dots_width -. right_space in
[Cpdftype.HGlue left_space] @ dots @ [Cpdftype.HGlue right_space]
(* Typeset a table of contents with given font, font size and title. Mediabox
(and CropBox) copied from first page of existing PDF. Margin of 10% inside
@ -143,10 +150,8 @@ let typeset_table_of_contents ~font ~fontsize ~title ~bookmark ~dotleader pdf =
let textruns = of_pdfdocencoding fontpack fontsize mark.Pdfmarks.text in
let labelruns =
if mark.Pdfmarks.target = NullDestination then of_pdfdocencoding fontpack fontsize "" else
let pde =
let pnum = Pdfpage.pagenumber_of_target ~fastrefnums pdf mark.Pdfmarks.target in
try Pdfpagelabels.pagelabeltext_of_pagenumber pnum labels with Not_found -> string_of_int pnum
in
let pnum = Pdfpage.pagenumber_of_target ~fastrefnums pdf mark.Pdfmarks.target in
let pde = try Pdfpagelabels.pagelabeltext_of_pagenumber pnum labels with Not_found -> string_of_int pnum in
of_pdfdocencoding fontpack fontsize pde
in
let textgap = width -. margin *. 2. -. indent -. width_of_runs labelruns in
@ -155,7 +160,7 @@ let typeset_table_of_contents ~font ~fontsize ~title ~bookmark ~dotleader pdf =
[Cpdftype.BeginDest mark.Pdfmarks.target;
Cpdftype.HGlue indent]
@ textruns @
(if dotleader then make_dots space else [Cpdftype.HGlue space])
(if dotleader then make_dots space fontpack fontsize else [Cpdftype.HGlue space])
@ labelruns @
[Cpdftype.EndDest;
Cpdftype.NewLine])