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35 lines
3.4 KiB
Go
35 lines
3.4 KiB
Go
//
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// Copyright 2020 FoxyUtils ehf. All rights reserved.
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//
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// This is a commercial product and requires a license to operate.
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// A trial license can be obtained at https://unidoc.io
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//
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// DO NOT EDIT: generated by unitwist Go source code obfuscator.
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//
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// Use of this source code is governed by the UniDoc End User License Agreement
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// terms that can be accessed at https://unidoc.io/eula/
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package pdfutil ;import (_ea "github.com/unidoc/unipdf/v3/common";_a "github.com/unidoc/unipdf/v3/contentstream";_b "github.com/unidoc/unipdf/v3/contentstream/draw";_g "github.com/unidoc/unipdf/v3/core";_f "github.com/unidoc/unipdf/v3/model";);
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// NormalizePage performs the following operations on the passed in page:
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// - Normalize the page rotation.
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// Rotates the contents of the page according to the Rotate entry, thus
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// flattening the rotation. The Rotate entry of the page is set to nil.
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// - Normalize the media box.
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// If the media box of the page is offsetted (Llx != 0 or Lly != 0),
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// the contents of the page are translated to (-Llx, -Lly). After
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// normalization, the media box is updated (Llx and Lly are set to 0 and
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// Urx and Ury are updated accordingly).
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// - Normalize the crop box.
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// The crop box of the page is updated based on the previous operations.
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// After normalization, the page should look the same if openend using a
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// PDF viewer.
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// NOTE: This function does not normalize annotations, outlines other parts
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// that are not part of the basic geometry and page content streams.
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func NormalizePage (page *_f .PdfPage )error {_be ,_eb :=page .GetMediaBox ();if _eb !=nil {return _eb ;};_beb ,_eb :=page .GetRotate ();if _eb !=nil {_ea .Log .Debug ("\u0045\u0052R\u004f\u0052\u003a\u0020\u0025\u0073\u0020\u002d\u0020\u0069\u0067\u006e\u006f\u0072\u0069\u006e\u0067\u0020\u0061\u006e\u0064\u0020\u0061\u0073\u0073\u0075\u006d\u0069\u006e\u0067\u0020\u006e\u006f\u0020\u0072\u006f\u0074\u0061\u0074\u0069\u006f\u006e\u000a",_eb .Error ());
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};_gf :=_beb %360!=0&&_beb %90==0;_be .Normalize ();_ec ,_c ,_bf ,_bff :=_be .Llx ,_be .Lly ,_be .Width (),_be .Height ();_fg :=_ec !=0||_c !=0;if !_gf &&!_fg {return nil ;};_ca :=func (_gb ,_eba ,_af float64 )_b .BoundingBox {return _b .Path {Points :[]_b .Point {_b .NewPoint (0,0).Rotate (_af ),_b .NewPoint (_gb ,0).Rotate (_af ),_b .NewPoint (0,_eba ).Rotate (_af ),_b .NewPoint (_gb ,_eba ).Rotate (_af )}}.GetBoundingBox ();
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};_ge :=_a .NewContentCreator ();var _fa float64 ;if _gf {_fa =-float64 (_beb );_d :=_ca (_bf ,_bff ,_fa );_ge .Translate ((_d .Width -_bf )/2+_bf /2,(_d .Height -_bff )/2+_bff /2);_ge .RotateDeg (_fa );_ge .Translate (-_bf /2,-_bff /2);_bf ,_bff =_d .Width ,_d .Height ;
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};if _fg {_ge .Translate (-_ec ,-_c );};_cd :=_ge .Operations ();_cc ,_eb :=_g .MakeStream (_cd .Bytes (),_g .NewFlateEncoder ());if _eb !=nil {return _eb ;};_cda :=_g .MakeArray (_cc );_cda .Append (page .GetContentStreamObjs ()...);*_be =_f .PdfRectangle {Urx :_bf ,Ury :_bff };
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if _cb :=page .CropBox ;_cb !=nil {_cb .Normalize ();_gg ,_ga ,_df ,_fd :=_cb .Llx -_ec ,_cb .Lly -_c ,_cb .Width (),_cb .Height ();if _gf {_ce :=_ca (_df ,_fd ,_fa );_df ,_fd =_ce .Width ,_ce .Height ;};*_cb =_f .PdfRectangle {Llx :_gg ,Lly :_ga ,Urx :_gg +_df ,Ury :_ga +_fd };
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};_ea .Log .Debug ("\u0052\u006f\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u004f\u0070\u0073\u003d%\u0071 \u004d\u0065\u0064\u0069\u0061\u0042\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_fa ,_cd ,_be );page .Contents =_cda ;page .Rotate =nil ;
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return nil ;}; |