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-add-text now only a single caller to Cpdfembed

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John Whitington
2023-07-10 14:13:45 +01:00
parent 566b4ba304
commit 6cbfc84150
2 changed files with 103 additions and 124 deletions
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224
cpdfaddtext.ml
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@@ -2,13 +2,6 @@
open Pdfutil
open Cpdferror
(* Keep a record of charcodes used for font subsetting. *)
let used = null_hash ()
(* If we have used a TTF font, put its name and object number here. Then we
know we put it there, and can avoid writing it anew across ANDS. *)
let glob_pdfobjnum = null_hash ()
type color =
Grey of float
| RGB of float * float * float
@@ -58,32 +51,24 @@ let colour_op_stroke = function
| CYMK (c, y, m, k) -> Pdfops.Op_K (c, y, m, k)
let ops fontname longest_w x y rotate hoffset voffset outline linewidth unique_fontname unique_extgstatename colour fontsize text =
begin match Hashtbl.find used fontname with
| exception Not_found ->
let thisused = null_hash () in
String.iter (fun x -> Hashtbl.replace thisused x ()) text;
Hashtbl.add used fontname thisused
| thisused ->
String.iter (fun x -> Hashtbl.replace thisused x ()) text;
end;
[Pdfops.Op_q;
Pdfops.Op_BMC "/CPDFSTAMP";
Pdfops.Op_cm
(Pdftransform.matrix_of_transform
[Pdftransform.Translate (x -. hoffset, y -. voffset);
Pdftransform.Rotate ((0., 0.), rotate)]);
Pdfops.Op_BT;
] @
(if outline then [Pdfops.Op_w linewidth; Pdfops.Op_Tr 1] else [Pdfops.Op_Tr 0]) @
[colour_op colour; colour_op_stroke colour]
@
(match unique_extgstatename with None -> [] | Some n -> [Pdfops.Op_gs n])
@
[Pdfops.Op_Tf (unique_fontname, fontsize);
Pdfops.Op_Tj text;
Pdfops.Op_ET;
Pdfops.Op_EMC;
Pdfops.Op_Q]
[Pdfops.Op_q;
Pdfops.Op_BMC "/CPDFSTAMP";
Pdfops.Op_cm
(Pdftransform.matrix_of_transform
[Pdftransform.Translate (x -. hoffset, y -. voffset);
Pdftransform.Rotate ((0., 0.), rotate)]);
Pdfops.Op_BT;
] @
(if outline then [Pdfops.Op_w linewidth; Pdfops.Op_Tr 1] else [Pdfops.Op_Tr 0]) @
[colour_op colour; colour_op_stroke colour]
@
(match unique_extgstatename with None -> [] | Some n -> [Pdfops.Op_gs n])
@
[Pdfops.Op_Tf (unique_fontname, fontsize);
Pdfops.Op_Tj text;
Pdfops.Op_ET;
Pdfops.Op_EMC;
Pdfops.Op_Q]
type justification = LeftJustify | CentreJustify | RightJustify
@@ -234,6 +219,16 @@ let replace_pairs pdf endpage extract_text_font_size filename bates batespad num
then numstring
else implode (many '0' (w - String.length numstring)) ^ numstring))]
let expand_lines text time pdf endpage extract_text_font_size filename bates batespad num page lines =
let expanded_lines =
map
(function text ->
process_text time text (replace_pairs pdf endpage extract_text_font_size filename bates batespad num page))
lines
in
(* process URLs for justification too *)
map (fun line -> fst (get_urls_line line)) expanded_lines
let addtext
time lines linewidth outline fast colour fontname encoding bates batespad
fontsize font fontpdfobj underneath position hoffset voffset text pages
@@ -264,79 +259,70 @@ let addtext
| None -> Pdf.Dictionary []
| Some d -> d
in
let calc_textwidth text =
match font with
| Some (Pdftext.StandardFont (f, _)) ->
let rawwidth =
Pdfstandard14.textwidth false encoding f text
in
(float rawwidth *. fontsize) /. 1000.
| Some font ->
let rawwidth = width_of_text font text in
(rawwidth *. fontsize) /. 1000.
| None ->
let font =
match Pdf.lookup_direct pdf "/Font" page.Pdfpage.resources with
| Some fontdict ->
begin match Pdf.lookup_direct pdf fontname fontdict with
| Some font -> font
| None ->
(* For each item in the fontdict, follow its value and find the basename. If it matches, return that font *)
let font = ref None in
iter
(fun (k, v) ->
match Pdf.lookup_direct pdf "/BaseFont" v with
| Some (Pdf.Name n) when n = fontname -> font := Some v
| _ -> ())
(match fontdict with Pdf.Dictionary d -> d | _ -> []);
match !font with Some f -> f | None -> failwith (Printf.sprintf "addtext: font %s not found" fontname)
end
| _ -> failwith "addtext: font not found for width"
in
let rawwidth = width_of_text (Pdftext.read_font pdf font) text in
(rawwidth *. fontsize) /. 1000.
let calc_textwidth text =
match font with
| Some (Pdftext.StandardFont (f, _)) ->
let rawwidth =
Pdfstandard14.textwidth false encoding f text
in
(float rawwidth *. fontsize) /. 1000.
| Some font ->
let rawwidth = width_of_text font text in
(rawwidth *. fontsize) /. 1000.
| None ->
let font =
match Pdf.lookup_direct pdf "/Font" page.Pdfpage.resources with
| Some fontdict ->
begin match Pdf.lookup_direct pdf fontname fontdict with
| Some font -> font
| None ->
(* For each item in the fontdict, follow its value and find the basename. If it matches, return that font *)
let font = ref None in
iter
(fun (k, v) ->
match Pdf.lookup_direct pdf "/BaseFont" v with
| Some (Pdf.Name n) when n = fontname -> font := Some v
| _ -> ())
(match fontdict with Pdf.Dictionary d -> d | _ -> []);
match !font with Some f -> f | None -> failwith (Printf.sprintf "addtext: font %s not found" fontname)
end
| _ -> failwith "addtext: font not found for width"
in
let rawwidth = width_of_text (Pdftext.read_font pdf font) text in
(rawwidth *. fontsize) /. 1000.
in
let unique_fontname = Pdf.unique_key "F" fontdict in
let ops, urls, x, y, hoffset, voffset, text, joffset =
let text = process_text time text (replace_pairs pdf endpage extract_text_font_size filename bates batespad num page) in
let text, urls = get_urls_line text in
let expanded_lines =
map
(function text ->
process_text time text (replace_pairs pdf endpage extract_text_font_size filename bates batespad num page))
lines
in
let expanded_lines = (* process URLs for justification too *)
map (fun line -> fst (get_urls_line line)) expanded_lines
in
let textwidth = calc_textwidth text
and allwidths = map calc_textwidth expanded_lines in
let longest_w = last (sort compare allwidths) in
let joffset = find_justification_offsets longest_w textwidth position justification in
let mediabox =
if cropbox then
match Pdf.lookup_direct pdf "/CropBox" page.Pdfpage.rest with
| Some pdfobject -> Pdf.parse_rectangle pdf (Pdf.direct pdf pdfobject)
| None -> Pdf.parse_rectangle pdf page.Pdfpage.mediabox
else
Pdf.parse_rectangle pdf page.Pdfpage.mediabox
let expanded_lines = expand_lines text time pdf endpage extract_text_font_size filename bates batespad num page lines in
let textwidth = calc_textwidth text
and allwidths = map calc_textwidth expanded_lines in
let longest_w = last (sort compare allwidths) in
let joffset = find_justification_offsets longest_w textwidth position justification in
let mediabox =
if cropbox then
match Pdf.lookup_direct pdf "/CropBox" page.Pdfpage.rest with
| Some pdfobject -> Pdf.parse_rectangle pdf (Pdf.direct pdf pdfobject)
| None -> Pdf.parse_rectangle pdf page.Pdfpage.mediabox
else
Pdf.parse_rectangle pdf page.Pdfpage.mediabox
in
let x, y, rotate = Cpdfposition.calculate_position false textwidth mediabox position in
let hoffset, voffset =
if position = Diagonal || position = ReverseDiagonal
then -. (cos ((pi /. 2.) -. rotate) *. voffset), sin ((pi /. 2.) -. rotate) *. voffset
else hoffset, voffset
in
let x, y, rotate = Cpdfposition.calculate_position false textwidth mediabox position in
let hoffset, voffset =
if position = Diagonal || position = ReverseDiagonal
then -. (cos ((pi /. 2.) -. rotate) *. voffset), sin ((pi /. 2.) -. rotate) *. voffset
else hoffset, voffset
in
match font with
| Some f ->
ops fontname longest_w (x +. shift_x) (y +. shift_y) rotate (hoffset +. joffset) voffset outline linewidth
unique_fontname unique_extgstatename colour fontsize text,
urls, x, y, hoffset, voffset, text, joffset
| None ->
ops fontname longest_w (x +. shift_x) (y +. shift_y) rotate (hoffset +. joffset) voffset outline linewidth
fontname None colour fontsize text,
urls, x, y, hoffset, voffset, text, joffset
match font with
| Some f ->
ops fontname longest_w (x +. shift_x) (y +. shift_y) rotate (hoffset +. joffset) voffset outline linewidth
unique_fontname unique_extgstatename colour fontsize text,
urls, x, y, hoffset, voffset, text, joffset
| None ->
ops fontname longest_w (x +. shift_x) (y +. shift_y) rotate (hoffset +. joffset) voffset outline linewidth
fontname None colour fontsize text,
urls, x, y, hoffset, voffset, text, joffset
in
let newresources =
match font with
@@ -426,8 +412,19 @@ let
justification midline topline filename extract_text_font_size shift
?(raw=false) pdf
=
let time = Cpdfstrftime.current_time () in
if pages = [] then error "addtexts: empty page range" else
let time = Cpdfstrftime.current_time () in
let endpage = Pdfpage.endpage pdf in
let ps = Pdfpage.pages_of_pagetree pdf in
let used = null_hash () in
let lines = map unescape_string (split_at_newline text) in
iter2
(fun num page ->
let expanded_lines = expand_lines text time pdf endpage extract_text_font_size filename bates batespad num page lines in
let codepoints = map Pdftext.codepoints_of_utf8 expanded_lines in
iter (iter (fun x -> Hashtbl.replace used x ())) codepoints)
pages
(map (fun x -> List.nth ps (x - 1)) pages);
let realfontname = ref fontname in
let font =
match cpdffont with
@@ -436,7 +433,7 @@ let
Some (hd (fst f))
| Cpdfembed.EmbedInfo {fontfile; fontname; encoding} ->
(*Printf.printf "Cpdfaddtext.addtexts: EmbedInfo\n";*)
let embedded = Cpdfembed.embed_truetype pdf ~fontfile ~fontname ~codepoints:[] ~encoding in
let embedded = Cpdfembed.embed_truetype pdf ~fontfile ~fontname ~codepoints:(map fst (list_of_hashtbl used)) ~encoding in
Some (hd (fst embedded))
| Cpdfembed.ExistingNamedFont -> None
in
@@ -445,13 +442,7 @@ let
| Some (Pdftext.StandardFont _ as font) ->
Pdf.Indirect (Pdftext.write_font pdf font)
| Some f ->
begin match Hashtbl.find glob_pdfobjnum fontname with
| exception Not_found ->
let i = Pdftext.write_font pdf f in
Hashtbl.add glob_pdfobjnum fontname i; Pdf.Indirect i
| i ->
Pdf.Indirect i
end
Pdf.Indirect (Pdftext.write_font pdf f)
| None ->
let firstpage =
List.nth (Pdfpage.pages_of_pagetree pdf) (hd pages - 1)
@@ -532,23 +523,14 @@ let
!pdf;
voffset := !voffset +. (linespacing *. fontsize))
lines;
begin match cpdffont with
(*begin match cpdffont with
| Cpdfembed.EmbedInfo {fontfile; fontname; encoding} ->
let charcodes =
match Hashtbl.find used fontname with
| exception Not_found -> []
| thisused -> map fst (list_of_hashtbl thisused)
in
let encoding_table = Pdftext.table_of_encoding encoding in
let glyphlist_table = Pdfglyphlist.glyph_hashes () in
let codepoints =
map (fun c -> unicode_codepoint_of_pdfcode encoding_table glyphlist_table (int_of_char c)) charcodes
in
let codepoints = map fst (list_of_hashtbl used) in
let objnum = match fontpdfobj with Pdf.Indirect i -> i | _ -> failwith "bad fontpdfobj" in
let font = hd (fst (Cpdfembed.embed_truetype !pdf ~fontfile ~fontname ~codepoints ~encoding)) in
ignore (Pdftext.write_font ~objnum !pdf font)
| _ -> ()
end;
end;*)
!pdf

3
cpdftruetype.ml
View File

@@ -2,9 +2,6 @@
open Pdfutil
open Pdfio
(* FIXME Make sure -add-text calls subset once only *)
(* FIXME Make it work with -draw *)
(* FIXME Check proper use of fontpacks and maximal sharing in -toc -typeset -add-text -draw *)
(* FIXME Proper widths for .notdef, and warn on .notdef being produced *)
(* FIXME Add suport for composite glyphs *)
(* FIXME Make sure -embed-std14 works for all commands *)