76 lines
2.1 KiB
OCaml
76 lines
2.1 KiB
OCaml
open Pdfutil
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type drawops_colspec =
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NoCol
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| RGB of float * float * float
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| Grey of float
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| CYMK of float * float * float * float
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type drawops =
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| Rect of float * float * float * float
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| Bezier of float * float * float * float * float * float
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| To of float * float
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| Line of float * float
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| ClosePath
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| SetFill of drawops_colspec
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| SetStroke of drawops_colspec
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| SetLineThickness of float
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| SetLineCap of int
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| SetLineJoin of int
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| SetMiterLimit of float
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| SetDashPattern of float list * float
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| Matrix of Pdftransform.transform_matrix
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| Push
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| Pop
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| Fill
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| FillEvenOdd
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| Stroke
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| FillStroke
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| FillStrokeEvenOdd
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| SoftXObject of drawops list
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| HardXObject of drawops list
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let rec ops_of_drawop = function
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| Push -> [Pdfops.Op_q]
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| Pop -> [Pdfops.Op_Q]
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| Matrix m -> [Pdfops.Op_cm m]
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| Rect (x, y, w, h) -> [Pdfops.Op_re (x, y, w, h)]
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| Bezier (a, b, c, d, e, f) -> [Pdfops.Op_c (a, b, c, d, e, f)]
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| To (x, y) -> [Pdfops.Op_m (x, y)]
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| Line (x, y) -> [Pdfops.Op_l (x, y)]
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| SetFill x ->
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begin match x with
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| RGB (r, g, b) -> [Op_rg (r, g, b)]
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| Grey g -> [Op_g g]
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| CYMK (c, y, m, k) -> [Op_k (c, y, m, k)]
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| NoCol -> []
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end
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| SetStroke x ->
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begin match x with
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| RGB (r, g, b) -> [Op_RG (r, g, b)]
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| Grey g -> [Op_G g]
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| CYMK (c, y, m, k) -> [Op_K (c, y, m, k)]
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| NoCol -> []
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end
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| ClosePath
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| Fill -> [Pdfops.Op_f]
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| FillEvenOdd -> [Pdfops.Op_f']
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| Stroke -> [Pdfops.Op_S]
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| FillStroke -> [Pdfops.Op_B]
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| FillStrokeEvenOdd -> [Pdfops.Op_B']
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| SetLineThickness t -> [Pdfops.Op_w t]
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| SetLineCap c -> [Pdfops.Op_J c]
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| SetLineJoin j -> [Pdfops.Op_j j]
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| SetMiterLimit m -> [Pdfops.Op_M m]
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| SetDashPattern (x, y) -> [Pdfops.Op_d (x, y)]
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| SoftXObject l | HardXObject l ->
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[Pdfops.Op_q] @ ops_of_drawops l @ [Pdfops.Op_Q]
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and ops_of_drawops drawops =
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flatten (map ops_of_drawop drawops)
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(* Draw all the accumulated operators *)
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let draw fast range pdf drawops =
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let s = Pdfops.string_of_ops (ops_of_drawops drawops) in
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Cpdftweak.append_page_content s false fast range pdf
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