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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 (_c "github.com/unidoc/unipdf/v3/common";_fa "github.com/unidoc/unipdf/v3/contentstream";_g "github.com/unidoc/unipdf/v3/contentstream/draw";_cb "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 {_cc ,_d :=page .GetMediaBox ();if _d !=nil {return _d ;};_cd ,_d :=page .GetRotate ();if _d !=nil {_c .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",_d .Error ());
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};_e :=_cd %360!=0&&_cd %90==0;_cc .Normalize ();_a ,_ce ,_ge ,_geg :=_cc .Llx ,_cc .Lly ,_cc .Width (),_cc .Height ();_dc :=_a !=0||_ce !=0;if !_e &&!_dc {return nil ;};_dd :=func (_cda ,_bf ,_gf float64 )_g .BoundingBox {return _g .Path {Points :[]_g .Point {_g .NewPoint (0,0).Rotate (_gf ),_g .NewPoint (_cda ,0).Rotate (_gf ),_g .NewPoint (0,_bf ).Rotate (_gf ),_g .NewPoint (_cda ,_bf ).Rotate (_gf )}}.GetBoundingBox ();
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};_eb :=_fa .NewContentCreator ();var _dcg float64 ;if _e {_dcg =-float64 (_cd );_aa :=_dd (_ge ,_geg ,_dcg );_eb .Translate ((_aa .Width -_ge )/2+_ge /2,(_aa .Height -_geg )/2+_geg /2);_eb .RotateDeg (_dcg );_eb .Translate (-_ge /2,-_geg /2);_ge ,_geg =_aa .Width ,_aa .Height ;
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};if _dc {_eb .Translate (-_a ,-_ce );};_dg :=_eb .Operations ();_dda ,_d :=_cb .MakeStream (_dg .Bytes (),_cb .NewFlateEncoder ());if _d !=nil {return _d ;};_bfb :=_cb .MakeArray (_dda );_bfb .Append (page .GetContentStreamObjs ()...);*_cc =_f .PdfRectangle {Urx :_ge ,Ury :_geg };
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if _de :=page .CropBox ;_de !=nil {_de .Normalize ();_fg ,_ag ,_agb ,_gc :=_de .Llx -_a ,_de .Lly -_ce ,_de .Width (),_de .Height ();if _e {_ba :=_dd (_agb ,_gc ,_dcg );_agb ,_gc =_ba .Width ,_ba .Height ;};*_de =_f .PdfRectangle {Llx :_fg ,Lly :_ag ,Urx :_fg +_agb ,Ury :_ag +_gc };
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};_c .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",_dcg ,_dg ,_cc );page .Contents =_bfb ;page .Rotate =nil ;
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return nil ;}; |