diff --git a/cpdfcommand.ml b/cpdfcommand.ml index 6ccfddb..0807c0c 100644 --- a/cpdfcommand.ml +++ b/cpdfcommand.ml @@ -1746,14 +1746,36 @@ let whingemalformed () = prerr_string "Command line must be of exactly the form\ncpdf -gs -gs-malformed-force -o \n"; exit 1 +(* Drawing operations. Just the parsed command line ops. We convert to actual PDF operations later. *) +type drawops_colspec = + NoCol + | RGB of float * float * float + type drawops = | Rect of float * float * float * float (* x, y, w, h *) + | To of float * float + | Line of float * float + | Fill of drawops_colspec + | Stroke of drawops_colspec + | EndPath let drawops = ref [] (* Add rect to list of drawing commands *) let addrect s = - drawops := Rect (100., 100., 200., 300.)::!drawops + let x, y, w, h = Cpdfcoord.parse_rectangle (Pdf.empty ()) s in + drawops := Rect (x, y, w, h)::!drawops + +let addto s = + let x, y = Cpdfcoord.parse_coordinate (Pdf.empty ()) s in + drawops := To (x, y)::!drawops + +let addline s = + let x, y = Cpdfcoord.parse_coordinate (Pdf.empty ()) s in + drawops := Line (x, y)::!drawops + +let endpath () = + drawops := EndPath::!drawops (* Parse a control file, make an argv, and then make Arg parse it. *) let rec make_control_argv_and_parse filename = @@ -2535,6 +2557,9 @@ and specs = (* Creating new PDF content *) ("-draw", Arg.Unit (setop Draw), " Begin drawing"); ("-rect", Arg.String addrect, " Draw rectangle"); + ("-to", Arg.String addto, " Move to"); + ("-line", Arg.String addline, " Line to"); + ("-end", Arg.Unit endpath, " End path"); (* These items are undocumented *) ("-remove-unused-resources", Arg.Unit (setop RemoveUnusedResources), ""); ("-stay-on-error", Arg.Unit setstayonerror, ""); @@ -3094,9 +3119,27 @@ let embed_font () = | FontToEmbed fontfile -> EmbedInfo {fontfile; fontname = args.fontname; encoding = args.fontencoding} +type state = + {mutable fill : drawops_colspec; + mutable stroke : drawops_colspec} + +let state = + {fill = NoCol; + stroke = NoCol} let ops_of_drawop = function - | Rect (x, y, w, h) -> [Pdfops.Op_re (x, y, w, h); Pdfops.Op_f] + | Rect (x, y, w, h) -> [Pdfops.Op_re (x, y, w, h)] + | To (x, y) -> [Pdfops.Op_m (x, y)] + | Line (x, y) -> [Pdfops.Op_l (x, y)] + | Fill x -> (* FIXME: do col *) state.fill <- x; [] + | Stroke x -> (* FIXME: do col *) state.stroke <- x; [] + | EndPath -> + begin match state.fill, state.stroke with + | NoCol, NoCol -> [] + | NoCol, _ -> [Pdfops.Op_S] + | _, NoCol -> [Pdfops.Op_f] + | _, _ -> [Pdfops.Op_B'] + end let ops_of_drawops drawops = flatten (map ops_of_drawop drawops) diff --git a/cpdfcoord.mli b/cpdfcoord.mli index af096a6..5e75334 100644 --- a/cpdfcoord.mli +++ b/cpdfcoord.mli @@ -2,6 +2,9 @@ (** See cpdfmanual.pdf for examples of things these functions can parse, such as page sizes. *) +(** Read a single rectangles from a string. *) +val parse_rectangle : Pdf.t -> string -> (float * float * float * float) + (** Read a list of rectangles from a string. *) val parse_rectangles : Pdf.t -> string -> (float * float * float * float) list