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cpdf-source
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This commit is contained in:
John Whitington 2023-05-01 19:00:28 +01:00
parent 8efd78a46f
commit 3de294119b
1 changed files with 16 additions and 8 deletions
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24
cpdfdraw.ml
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@ -80,9 +80,15 @@ let fresh_font_name pdf f =
Hashtbl.add fonts n (Pdf.Indirect (Pdftext.write_font pdf f)); Hashtbl.add fonts n (Pdf.Indirect (Pdftext.write_font pdf f));
n n
let process_specials s = s let time = ref Cpdfstrftime.dummy
let rec ops_of_drawop pdf = function let process_specials pdf endpage filename bates batespad num page s =
let pairs =
Cpdfaddtext.replace_pairs pdf endpage None filename bates batespad num page
in
Cpdfaddtext.process_text !time s pairs
let rec ops_of_drawop pdf endpage filename bates batespad num page = function
| Push -> [Pdfops.Op_q] | Push -> [Pdfops.Op_q]
| Pop -> [Pdfops.Op_Q] | Pop -> [Pdfops.Op_Q]
| Matrix m -> [Pdfops.Op_cm m] | Matrix m -> [Pdfops.Op_cm m]
@ -118,7 +124,7 @@ let rec ops_of_drawop pdf = function
| SetMiterLimit m -> [Pdfops.Op_M m] | SetMiterLimit m -> [Pdfops.Op_M m]
| SetDashPattern (x, y) -> [Pdfops.Op_d (x, y)] | SetDashPattern (x, y) -> [Pdfops.Op_d (x, y)]
| SoftXObject l | HardXObject l -> | SoftXObject l | HardXObject l ->
[Pdfops.Op_q] @ ops_of_drawops pdf l @ [Pdfops.Op_Q] [Pdfops.Op_q] @ ops_of_drawops pdf endpage filename bates batespad num page l @ [Pdfops.Op_Q]
| Image s -> [Pdfops.Op_Do (try fst (Hashtbl.find images s) with _ -> Cpdferror.error ("Image not found: " ^ s))] | Image s -> [Pdfops.Op_Do (try fst (Hashtbl.find images s) with _ -> Cpdferror.error ("Image not found: " ^ s))]
| ImageXObject (s, obj) -> | ImageXObject (s, obj) ->
Hashtbl.add images s (fresh_xobj_name (), Pdf.addobj pdf obj); Hashtbl.add images s (fresh_xobj_name (), Pdf.addobj pdf obj);
@ -144,8 +150,9 @@ let rec ops_of_drawop pdf = function
| BT -> [Pdfops.Op_BT] | BT -> [Pdfops.Op_BT]
| ET -> [Pdfops.Op_ET] | ET -> [Pdfops.Op_ET]
| Text s -> | Text s ->
let s = process_specials pdf endpage filename bates batespad num page s in
let charcodes = let charcodes =
implode (map char_of_int (option_map (Pdftext.charcode_extractor_of_font_real !current_font) (Pdftext.codepoints_of_utf8 (process_specials s)))) implode (map char_of_int (option_map (Pdftext.charcode_extractor_of_font_real !current_font) (Pdftext.codepoints_of_utf8 s)))
in in
[Pdfops.Op_Tj charcodes] [Pdfops.Op_Tj charcodes]
| Leading f -> [Pdfops.Op_TL f] | Leading f -> [Pdfops.Op_TL f]
@ -156,12 +163,13 @@ let rec ops_of_drawop pdf = function
| Rise f -> [Pdfops.Op_Ts f] | Rise f -> [Pdfops.Op_Ts f]
| Newline -> [Pdfops.Op_T'] | Newline -> [Pdfops.Op_T']
and ops_of_drawops pdf drawops = and ops_of_drawops pdf endpage filename bates batespad num page drawops =
flatten (map (ops_of_drawop pdf) drawops) flatten (map (ops_of_drawop pdf endpage filename bates batespad num page) drawops)
(* Draw all the accumulated operators. FIXME: Manage name clashes in Xobjects etc. *) (* Draw all the accumulated operators. *)
let draw fast range pdf drawops = let draw fast range pdf drawops =
let s = Pdfops.string_of_ops (ops_of_drawops pdf drawops) in time := Cpdfstrftime.current_time ();
let s = Pdfops.string_of_ops (ops_of_drawops pdf 1 "" 0 None 1 (Pdfpage.blankpage Pdfpaper.a4) drawops) in
let pdf = Cpdftweak.append_page_content s false fast range pdf in let pdf = Cpdftweak.append_page_content s false fast range pdf in
let images = list_of_hashtbl images in let images = list_of_hashtbl images in
let image_resources = map (fun (_, (n, o)) -> (n, Pdf.Indirect o)) images in let image_resources = map (fun (_, (n, o)) -> (n, Pdf.Indirect o)) images in