cpdfposition
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2
Makefile
2
Makefile
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@ -1,6 +1,6 @@
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# Build the cpdf command line tools and top level
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MODS = tjutil tjutf16 tjllist tjparserMonad tjjson xmlm \
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cpdfwriteJSON cpdfstrftime cpdfcoord cpdfpagespec cpdf cpdfcommand
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cpdfwriteJSON cpdfstrftime cpdfcoord cpdfpagespec cpdfposition cpdf cpdfcommand
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SOURCES = $(foreach x,$(MODS),$(x).ml $(x).mli) cpdfcommandrun.ml
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121
cpdf.ml
121
cpdf.ml
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@ -1268,94 +1268,6 @@ let print_fonts pdf =
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(* \section{Superimpose text, page numbers etc.} *)
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type position =
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| PosCentre of float * float
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| PosLeft of float * float
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| PosRight of float * float
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| Top of float
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| TopLeft of float
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| TopRight of float
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| Left of float
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| BottomLeft of float
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| Bottom of float
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| BottomRight of float
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| Right of float
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| Diagonal
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| ReverseDiagonal
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| Centre
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let string_of_position = function
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| PosCentre (a, b) -> Printf.sprintf "PosCentre %f %f" a b
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| PosLeft (a, b) -> Printf.sprintf "PosLeft %f %f" a b
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| PosRight (a, b) -> Printf.sprintf "PosRight %f %f" a b
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| Top a -> Printf.sprintf "Top %f" a
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| TopLeft a -> Printf.sprintf "TopLeft %f" a
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| TopRight a -> Printf.sprintf "TopRight %f" a
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| Left a -> Printf.sprintf "Left %f" a
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| BottomLeft a -> Printf.sprintf "BottomLeft %f" a
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| Bottom a -> Printf.sprintf "Bottom %f" a
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| BottomRight a -> Printf.sprintf "BottomRight %f" a
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| Right a -> Printf.sprintf "Right %f" a
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| Diagonal -> "Diagonal"
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| ReverseDiagonal -> "Reverse Diagonal"
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| Centre -> "Centre"
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type orientation =
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| Horizontal
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| Vertical
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| VerticalDown
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type justification = LeftJustify | CentreJustify | RightJustify
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(* Given the mediabox, calculate an absolute position for the text. *)
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let calculate_position ignore_d w (xmin, ymin, xmax, ymax) orientation pos =
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let rot = if orientation = VerticalDown then rad_of_deg 270. else 0. in
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match pos with
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| Centre ->
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(xmin +. xmax) /. 2. -. w /. 2.,
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(ymin +. ymax) /. 2.,
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rot
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| Diagonal ->
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let angle = atan ((ymax -. ymin) /. (xmax -. xmin))
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in let cx, cy = (xmax +. xmin) /. 2., (ymax +. ymin) /. 2. in
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let dl = w /. 2. in
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let dx = dl *. cos angle
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in let dy = dl *. sin angle in
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cx -. dx, cy -. dy, angle
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| ReverseDiagonal ->
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let angle = atan ((ymax -. ymin) /. (xmax -. xmin))
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in let cx, cy = (xmax +. xmin) /. 2., (ymax +. ymin) /. 2. in
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let dl = w /. 2. in
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let dx = dl *. cos angle
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in let dy = dl *. sin angle in
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cx -. dx, (ymax +. ymin) -. (cy -. dy), angle -. ((2. *. pi) -. ((pi -. (2. *. angle)) *. 2.) /. 2.) +. pi
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| PosLeft (x, y) -> xmin +. x, ymin +. y, rot
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| PosCentre (x, y) -> xmin +. x -. (w /. 2.), ymin +. y, rot
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| PosRight (x, y) -> xmin +. x -. w, ymin +. y, rot
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| Top d ->
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let d = if ignore_d then 0. else d in
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(xmin +. xmax) /. 2. -. w /. 2., ymax -. d, rot
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| TopLeft d ->
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let d = if ignore_d then 0. else d in
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xmin +. d, ymax -. d, rot
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| TopRight d ->
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let d = if ignore_d then 0. else d in
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xmax -. d -. w, ymax -. d, rot
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| Left d ->
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let d = if ignore_d then 0. else d in
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xmin +. d, (ymax +. ymin) /. 2., rot
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| BottomLeft d ->
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let d = if ignore_d then 0. else d in
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xmin +. d, ymin +. d, rot
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| Bottom d ->
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let d = if ignore_d then 0. else d in
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(xmin +. xmax) /. 2. -. w /. 2., ymin +. d, rot
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| BottomRight d ->
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let d = if ignore_d then 0. else d in
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xmax -. d -. w, ymin +. d, rot
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| Right d ->
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let d = if ignore_d then 0. else d in
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xmax -. d -. w, (ymax +. ymin) /. 2., rot
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(* Process UTF8 text to /WinAnsiEncoding string. *)
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let winansi_of_utf8 s =
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@ -1445,9 +1357,13 @@ let ops longest_w metrics x y rotate hoffset voffset outline linewidth unique_fo
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Pdfops.Op_EMC;
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Pdfops.Op_Q]
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type justification = LeftJustify | CentreJustify | RightJustify
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(* Find the h-offset for justification based on the longest width, the current
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width, the justification and the position. *)
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let find_justification_offsets longest_w w position = function
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let find_justification_offsets longest_w w position j =
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let open Cpdfposition in
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match j with
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| LeftJustify ->
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begin match position with
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| TopLeft _ | Left _ | PosLeft _ | BottomLeft _ -> 0.
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@ -1599,6 +1515,8 @@ let extract_text extract_text_font_size pdf range =
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fold_left (fun x y -> x ^ (if x <> "" && y <> "" then "\n" else "") ^ y) ""
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(map_pages (extract_page_text extract_text_font_size pdf) pdf range)
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let addtext
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metrics lines linewidth outline fast colour fontname embed bates batespad fontsize font
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underneath position hoffset voffset text pages orientation cropbox opacity
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@ -1696,7 +1614,7 @@ let addtext
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else
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Pdf.parse_rectangle page.Pdfpage.mediabox
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in
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let x, y, rotate = calculate_position false textwidth mediabox orientation position in
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let x, y, rotate = Cpdfposition.calculate_position false textwidth mediabox orientation position in
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let hoffset, voffset =
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if position = Diagonal || position = ReverseDiagonal
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then -. (cos ((pi /. 2.) -. rotate) *. voffset), sin ((pi /. 2.) -. rotate) *. voffset
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@ -1785,6 +1703,7 @@ let
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let lines = map unescape_string (split_at_newline text) in
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let pdf = ref pdf in
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let voffset =
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let open Cpdfposition in
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match position with
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| Bottom _ | BottomLeft _ | BottomRight _ ->
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ref (0. -. (linespacing *. fontsize *. (float (length lines) -. 1.)))
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@ -1824,7 +1743,7 @@ let
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iter
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(fun line ->
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let voff, hoff =
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if orientation = Vertical then 0., -.(!voffset) else !voffset, 0.
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if orientation = Cpdfposition.Vertical then 0., -.(!voffset) else !voffset, 0.
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in
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pdf :=
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addtext metrics lines linewidth outline fast colour fontname
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@ -2241,6 +2160,7 @@ let stamp_shift_of_position topline midline sw sh w h p =
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else if topline then sh
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else 0.
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in
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let open Cpdfposition in
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match p with
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| PosCentre (ox, oy) -> ox -. half sw, oy -. dy
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| PosLeft (ox, oy) -> ox, oy -. dy
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@ -2819,13 +2739,13 @@ let scale_to_fit_pdf ?(fast=false) position input_scale xylist op pdf range =
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let scale = fmin fx fy *. input_scale in
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let trans_x =
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match position with
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Left _ -> 0.
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| Right _ -> (x -. (maxx *. scale))
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Cpdfposition.Left _ -> 0.
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| Cpdfposition.Right _ -> (x -. (maxx *. scale))
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| _ -> (x -. (maxx *. scale)) /. 2.
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and trans_y =
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match position with
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| Top _ -> (y -. (maxy *. scale))
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| Bottom _ -> 0.
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| Cpdfposition.Top _ -> (y -. (maxy *. scale))
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| Cpdfposition.Bottom _ -> 0.
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| _ -> (y -. (maxy *. scale)) /. 2.
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in
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(Pdftransform.matrix_of_transform
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@ -2853,8 +2773,9 @@ let scale_page_contents ?(fast=false) scale position pdf pnum page =
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| Some r -> r
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| None -> page.Pdfpage.mediabox)
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in
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let sx, sy, _ = calculate_position true 0. box Horizontal position in
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let sx, sy, _ = Cpdfposition.calculate_position true 0. box Horizontal position in
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let tx, ty =
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let open Cpdfposition in
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match position with
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| Top t -> 0., -.t
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| TopLeft t -> t, -.t
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@ -3343,14 +3264,8 @@ let dc = "http://purl.org/dc/elements/1.1/"
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let rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
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(* For OCaml < 4.00 *)
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let string_trim s =
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implode
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(rev (dropwhile
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Pdf.is_whitespace (rev (dropwhile Pdf.is_whitespace (explode s)))))
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let combine_with_spaces strs =
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string_trim
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String.trim
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(fold_left (fun x y -> x ^ (if x <> "" then ", " else "") ^ y) "" strs)
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(* Collect all <li> elements inside a seq, bag, or alt. Combine with commas. If
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47
cpdf.mli
47
cpdf.mli
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@ -14,23 +14,6 @@ exception HardError of string
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(** Two exceptions recommended for use with the library, though currently not
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raised by any function in this module. Cpdfcommand uses them extensively. *)
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(** Possible positions for adding text and other uses. See cpdfmanual.pdf *)
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type position =
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| PosCentre of float * float
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| PosLeft of float * float
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| PosRight of float * float
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| Top of float
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| TopLeft of float
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| TopRight of float
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| Left of float
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| BottomLeft of float
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| Bottom of float
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| BottomRight of float
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| Right of float
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| Diagonal
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| ReverseDiagonal
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| Centre
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(** {2 Debug} *)
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(** Debug: Print out a PDF in readable form to the terminal *)
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@ -174,7 +157,7 @@ val combine_pages : bool -> Pdf.t -> Pdf.t -> bool -> bool -> bool -> Pdf.t
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(** [stamp relative_to_cropbox position topline midline fast scale_to_fit isover range over pdf] stamps the first page of
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[over] over each page of the PDF. The arguments have the same meaning as in
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[combine_pages]. *)
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val stamp : bool -> position -> bool -> bool -> bool -> bool -> bool -> int list -> Pdf.t -> Pdf.t -> Pdf.t
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val stamp : bool -> Cpdfposition.position -> bool -> bool -> bool -> bool -> bool -> int list -> Pdf.t -> Pdf.t -> Pdf.t
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(** {2 Splitting PDFs} *)
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@ -194,32 +177,12 @@ val list_fonts : Pdf.t -> (int * string * string * string * string) list
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(** Expand the string "now" to a PDF date string, ignoring any other string *)
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val expand_date : string -> string
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(** Produce a debug string of a [position] *)
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val string_of_position : position -> string
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(** Orientation of the string on the page *)
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type orientation =
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| Horizontal
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| Vertical
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| VerticalDown
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(** Justification of multiline text *)
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type justification =
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| LeftJustify
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| CentreJustify
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| RightJustify
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(** [calculate_position ignore_d w (xmin, ymin, xmax, ymax) orientation pos] calculates
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the absolute position of text given its width, bounding box, orientation and
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position. If [ignore_d] is true, the distance from the position (e.g 10 in
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TopLeft 10) is ignored (considered zero). *)
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val calculate_position :
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bool ->
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float ->
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float * float * float * float ->
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orientation -> position -> float * float * float
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(** Call [add_texts metrics linewidth outline fast fontname font bates batespad colour
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position linespacing fontsize underneath text pages orientation
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relative_to_cropbox midline_adjust topline filename pdf]. For details see cpdfmanual.pdf *)
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@ -234,13 +197,13 @@ val addtexts :
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int -> (* bates number *)
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int option -> (* bates padding width *)
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float * float * float -> (*colour*)
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position -> (*position*)
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Cpdfposition.position -> (*position*)
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float -> (*linespacing*)
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float -> (*fontsize*)
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bool -> (*underneath*)
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string ->(*text*)
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int list ->(*page range*)
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orientation ->(*orientation*)
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Cpdfposition.orientation ->(*orientation*)
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bool ->(*relative to cropbox?*)
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float ->(*opacity*)
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justification ->(*justification*)
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@ -323,10 +286,10 @@ val scale_pdf : ?fast:bool -> (float * float) list -> Pdf.t -> int list -> Pdf.t
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(** [scale_to_fit_pdf fast position input_scale x y op pdf range] scales a page to fit the
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page size given by (x, y) and by the [input_scale] (e.g 1.0 = scale to fit, 0.9
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= scale to fit leaving a border etc.). [op] is unused. *)
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val scale_to_fit_pdf : ?fast:bool -> position -> float -> (float * float) list -> 'a -> Pdf.t -> int list -> Pdf.t
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val scale_to_fit_pdf : ?fast:bool -> Cpdfposition.position -> float -> (float * float) list -> 'a -> Pdf.t -> int list -> Pdf.t
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(** Scale the contents of a page by a given factor centred around a given point in a given range. *)
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val scale_contents : ?fast:bool -> position -> float -> Pdf.t -> int list -> Pdf.t
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val scale_contents : ?fast:bool -> Cpdfposition.position -> float -> Pdf.t -> int list -> Pdf.t
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val trim_marks : ?fast:bool -> Pdf.t -> int list -> Pdf.t
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@ -379,7 +379,7 @@ type args =
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mutable fontsize : float;
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mutable color : float * float * float;
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mutable opacity : float;
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mutable position : Cpdf.position;
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mutable position : Cpdfposition.position;
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mutable underneath : bool;
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mutable linespacing : float;
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mutable midline : bool;
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@ -388,7 +388,7 @@ type args =
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mutable bates : int;
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mutable batespad : int option;
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mutable prerotate : bool;
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mutable orientation : Cpdf.orientation;
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mutable orientation : Cpdfposition.orientation;
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mutable relative_to_cropbox : bool;
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mutable keepversion : bool;
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mutable bycolumns : bool;
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@ -483,7 +483,7 @@ let args =
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fontsize = 12.;
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color = 0., 0., 0.;
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opacity = 1.;
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position = Cpdf.TopLeft 100.;
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position = Cpdfposition.TopLeft 100.;
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underneath = false;
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linespacing = 1.;
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midline = false;
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@ -492,7 +492,7 @@ let args =
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bates = 0;
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batespad = None;
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prerotate = false;
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orientation = Cpdf.Horizontal;
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orientation = Cpdfposition.Horizontal;
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relative_to_cropbox = false;
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keepversion = false;
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bycolumns = false;
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@ -587,7 +587,7 @@ let reset_arguments () =
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args.fontsize <- 12.;
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args.color <- 0., 0., 0.;
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args.opacity <- 1.;
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args.position <- Cpdf.TopLeft 100.;
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args.position <- Cpdfposition.TopLeft 100.;
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args.underneath <- false;
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args.linespacing <- 1.;
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args.midline <- false;
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@ -596,7 +596,7 @@ let reset_arguments () =
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args.bates <- 0;
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args.batespad <- None;
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args.prerotate <- false;
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args.orientation <- Cpdf.Horizontal;
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args.orientation <- Cpdfposition.Horizontal;
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args.relative_to_cropbox <- false;
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args.keepversion <- false;
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args.bycolumns <- false;
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@ -1047,11 +1047,11 @@ let setaddbookmarks s =
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let setstampon f =
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setop (StampOn f) ();
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(* Due to an earlier bad decision (default position), we have this nasty hack *)
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if args.position = Cpdf.TopLeft 100. then args.position <- Cpdf.BottomLeft 0.
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if args.position = Cpdfposition.TopLeft 100. then args.position <- Cpdfposition.BottomLeft 0.
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let setstampunder f =
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setop (StampUnder f) ();
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if args.position = Cpdf.TopLeft 100. then args.position <- Cpdf.BottomLeft 0.
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if args.position = Cpdfposition.TopLeft 100. then args.position <- Cpdfposition.BottomLeft 0.
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let setstampasxobject f =
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setop (StampAsXObject f) ()
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@ -1061,58 +1061,58 @@ let setcombinepages f =
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let setposcenter s =
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let x, y = Cpdfcoord.parse_coordinate empty s in
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args.position <- Cpdf.PosCentre (x, y)
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args.position <- Cpdfposition.PosCentre (x, y)
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let setposleft s =
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let x, y = Cpdfcoord.parse_coordinate empty s in
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args.position <- Cpdf.PosLeft (x, y)
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args.position <- Cpdfposition.PosLeft (x, y)
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let setposright s =
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let x, y = Cpdfcoord.parse_coordinate empty s in
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args.position <- Cpdf.PosRight (x, y)
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args.position <- Cpdfposition.PosRight (x, y)
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let settop n =
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args.position <- Cpdf.Top (Cpdfcoord.parse_single_number empty n);
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args.position <- Cpdfposition.Top (Cpdfcoord.parse_single_number empty n);
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args.justification <- Cpdf.CentreJustify
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let settopleft n =
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args.position <- Cpdf.TopLeft (Cpdfcoord.parse_single_number empty n);
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args.position <- Cpdfposition.TopLeft (Cpdfcoord.parse_single_number empty n);
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args.justification <- Cpdf.LeftJustify
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let settopright n =
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args.position <- Cpdf.TopRight (Cpdfcoord.parse_single_number empty n);
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args.position <- Cpdfposition.TopRight (Cpdfcoord.parse_single_number empty n);
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args.justification <- Cpdf.RightJustify
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let setleft n =
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args.position <- Cpdf.Left (Cpdfcoord.parse_single_number empty n);
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args.position <- Cpdfposition.Left (Cpdfcoord.parse_single_number empty n);
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args.justification <- Cpdf.LeftJustify
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let setbottomleft n =
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args.position <- Cpdf.BottomLeft (Cpdfcoord.parse_single_number empty n);
|
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args.position <- Cpdfposition.BottomLeft (Cpdfcoord.parse_single_number empty n);
|
||||
args.justification <- Cpdf.LeftJustify
|
||||
|
||||
let setbottom n =
|
||||
args.position <- Cpdf.Bottom (Cpdfcoord.parse_single_number empty n);
|
||||
args.position <- Cpdfposition.Bottom (Cpdfcoord.parse_single_number empty n);
|
||||
args.justification <- Cpdf.CentreJustify
|
||||
|
||||
let setbottomright n =
|
||||
args.position <- Cpdf.BottomRight (Cpdfcoord.parse_single_number empty n);
|
||||
args.position <- Cpdfposition.BottomRight (Cpdfcoord.parse_single_number empty n);
|
||||
args.justification <- Cpdf.RightJustify
|
||||
|
||||
let setright n =
|
||||
args.position <- Cpdf.Right (Cpdfcoord.parse_single_number empty n);
|
||||
args.position <- Cpdfposition.Right (Cpdfcoord.parse_single_number empty n);
|
||||
args.justification <- Cpdf.RightJustify
|
||||
|
||||
let setdiagonal n =
|
||||
args.position <- Cpdf.Diagonal;
|
||||
args.position <- Cpdfposition.Diagonal;
|
||||
args.justification <- Cpdf.CentreJustify
|
||||
|
||||
let setreversediagonal n =
|
||||
args.position <- Cpdf.ReverseDiagonal;
|
||||
args.position <- Cpdfposition.ReverseDiagonal;
|
||||
args.justification <- Cpdf.CentreJustify
|
||||
|
||||
let setcenter n =
|
||||
args.position <- Cpdf.Centre;
|
||||
args.position <- Cpdfposition.Centre;
|
||||
args.justification <- Cpdf.CentreJustify
|
||||
|
||||
let setbatespad n =
|
||||
|
@ -1220,7 +1220,7 @@ let setscaletofitscale f =
|
|||
let setscalecontents f =
|
||||
detect_duplicate_op (ScaleContents f);
|
||||
args.op <- Some (ScaleContents f);
|
||||
args.position <- Cpdf.Diagonal (* Will be center *)
|
||||
args.position <- Cpdfposition.Diagonal (* Will be center *)
|
||||
|
||||
let setsqueeze () =
|
||||
args.squeeze <- true;
|
||||
|
@ -1345,10 +1345,10 @@ let setp2ppath p =
|
|||
args.path_to_p2p <- p
|
||||
|
||||
let settextvertical () =
|
||||
args.orientation <- Cpdf.Vertical
|
||||
args.orientation <- Cpdfposition.Vertical
|
||||
|
||||
let settextverticaldown () =
|
||||
args.orientation <- Cpdf.VerticalDown
|
||||
args.orientation <- Cpdfposition.VerticalDown
|
||||
|
||||
let setfrombox s =
|
||||
detect_duplicate_op CopyBox;
|
||||
|
@ -3351,12 +3351,12 @@ let addrectangle
|
|||
Pdf.parse_rectangle page.Pdfpage.mediabox
|
||||
in
|
||||
let x, y, _ =
|
||||
Cpdf.calculate_position false w mediabox Cpdf.Horizontal position
|
||||
Cpdfposition.calculate_position false w mediabox Cpdfposition.Horizontal position
|
||||
in
|
||||
let x, y =
|
||||
match position with
|
||||
Cpdf.Top _ | Cpdf.TopLeft _ | Cpdf.TopRight _ -> (x, y -. h)
|
||||
| Cpdf.Centre | Cpdf.PosCentre _ -> (x, y -. (h /. 2.))
|
||||
Cpdfposition.Top _ | Cpdfposition.TopLeft _ | Cpdfposition.TopRight _ -> (x, y -. h)
|
||||
| Cpdfposition.Centre | Cpdfposition.PosCentre _ -> (x, y -. (h /. 2.))
|
||||
| _ -> (x, y)
|
||||
in
|
||||
let ops =
|
||||
|
|
|
@ -0,0 +1,88 @@
|
|||
open Pdfutil
|
||||
|
||||
type position =
|
||||
| PosCentre of float * float
|
||||
| PosLeft of float * float
|
||||
| PosRight of float * float
|
||||
| Top of float
|
||||
| TopLeft of float
|
||||
| TopRight of float
|
||||
| Left of float
|
||||
| BottomLeft of float
|
||||
| Bottom of float
|
||||
| BottomRight of float
|
||||
| Right of float
|
||||
| Diagonal
|
||||
| ReverseDiagonal
|
||||
| Centre
|
||||
|
||||
let string_of_position = function
|
||||
| PosCentre (a, b) -> Printf.sprintf "PosCentre %f %f" a b
|
||||
| PosLeft (a, b) -> Printf.sprintf "PosLeft %f %f" a b
|
||||
| PosRight (a, b) -> Printf.sprintf "PosRight %f %f" a b
|
||||
| Top a -> Printf.sprintf "Top %f" a
|
||||
| TopLeft a -> Printf.sprintf "TopLeft %f" a
|
||||
| TopRight a -> Printf.sprintf "TopRight %f" a
|
||||
| Left a -> Printf.sprintf "Left %f" a
|
||||
| BottomLeft a -> Printf.sprintf "BottomLeft %f" a
|
||||
| Bottom a -> Printf.sprintf "Bottom %f" a
|
||||
| BottomRight a -> Printf.sprintf "BottomRight %f" a
|
||||
| Right a -> Printf.sprintf "Right %f" a
|
||||
| Diagonal -> "Diagonal"
|
||||
| ReverseDiagonal -> "Reverse Diagonal"
|
||||
| Centre -> "Centre"
|
||||
|
||||
type orientation =
|
||||
| Horizontal
|
||||
| Vertical
|
||||
| VerticalDown
|
||||
|
||||
(* Given the mediabox, calculate an absolute position for the text. *)
|
||||
let calculate_position ignore_d w (xmin, ymin, xmax, ymax) orientation pos =
|
||||
let rot = if orientation = VerticalDown then rad_of_deg 270. else 0. in
|
||||
match pos with
|
||||
| Centre ->
|
||||
(xmin +. xmax) /. 2. -. w /. 2.,
|
||||
(ymin +. ymax) /. 2.,
|
||||
rot
|
||||
| Diagonal ->
|
||||
let angle = atan ((ymax -. ymin) /. (xmax -. xmin))
|
||||
in let cx, cy = (xmax +. xmin) /. 2., (ymax +. ymin) /. 2. in
|
||||
let dl = w /. 2. in
|
||||
let dx = dl *. cos angle
|
||||
in let dy = dl *. sin angle in
|
||||
cx -. dx, cy -. dy, angle
|
||||
| ReverseDiagonal ->
|
||||
let angle = atan ((ymax -. ymin) /. (xmax -. xmin))
|
||||
in let cx, cy = (xmax +. xmin) /. 2., (ymax +. ymin) /. 2. in
|
||||
let dl = w /. 2. in
|
||||
let dx = dl *. cos angle
|
||||
in let dy = dl *. sin angle in
|
||||
cx -. dx, (ymax +. ymin) -. (cy -. dy), angle -. ((2. *. pi) -. ((pi -. (2. *. angle)) *. 2.) /. 2.) +. pi
|
||||
| PosLeft (x, y) -> xmin +. x, ymin +. y, rot
|
||||
| PosCentre (x, y) -> xmin +. x -. (w /. 2.), ymin +. y, rot
|
||||
| PosRight (x, y) -> xmin +. x -. w, ymin +. y, rot
|
||||
| Top d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
(xmin +. xmax) /. 2. -. w /. 2., ymax -. d, rot
|
||||
| TopLeft d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmin +. d, ymax -. d, rot
|
||||
| TopRight d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmax -. d -. w, ymax -. d, rot
|
||||
| Left d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmin +. d, (ymax +. ymin) /. 2., rot
|
||||
| BottomLeft d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmin +. d, ymin +. d, rot
|
||||
| Bottom d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
(xmin +. xmax) /. 2. -. w /. 2., ymin +. d, rot
|
||||
| BottomRight d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmax -. d -. w, ymin +. d, rot
|
||||
| Right d ->
|
||||
let d = if ignore_d then 0. else d in
|
||||
xmax -. d -. w, (ymax +. ymin) /. 2., rot
|
|
@ -0,0 +1,32 @@
|
|||
(** Possible positions for adding text and other uses. See cpdfmanual.pdf *)
|
||||
type position =
|
||||
PosCentre of float * float
|
||||
| PosLeft of float * float
|
||||
| PosRight of float * float
|
||||
| Top of float
|
||||
| TopLeft of float
|
||||
| TopRight of float
|
||||
| Left of float
|
||||
| BottomLeft of float
|
||||
| Bottom of float
|
||||
| BottomRight of float
|
||||
| Right of float
|
||||
| Diagonal
|
||||
| ReverseDiagonal
|
||||
| Centre
|
||||
|
||||
(** Produce a debug string of a [position] *)
|
||||
val string_of_position : position -> string
|
||||
|
||||
(** Orientation of the string on the page *)
|
||||
type orientation = Horizontal | Vertical | VerticalDown
|
||||
|
||||
(** [calculate_position ignore_d w (xmin, ymin, xmax, ymax) orientation pos] calculates
|
||||
the absolute position of text given its width, bounding box, orientation and
|
||||
position. If [ignore_d] is true, the distance from the position (e.g 10 in
|
||||
TopLeft 10) is ignored (considered zero). *)
|
||||
val calculate_position :
|
||||
bool ->
|
||||
float ->
|
||||
float * float * float * float ->
|
||||
orientation -> position -> float * float * float
|
Loading…
Reference in New Issue