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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 (_d "github.com/unidoc/unipdf/v3/common";_c "github.com/unidoc/unipdf/v3/contentstream";_dg "github.com/unidoc/unipdf/v3/contentstream/draw";_gbe "github.com/unidoc/unipdf/v3/core";_gb "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 *_gb .PdfPage )error {_db ,_e :=page .GetMediaBox ();if _e !=nil {return _e ;};_gbb ,_e :=page .GetRotate ();if _e !=nil {_d .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",_e .Error ());
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};_f :=_gbb %360!=0&&_gbb %90==0;_db .Normalize ();_eb ,_b ,_ba ,_dbd :=_db .Llx ,_db .Lly ,_db .Width (),_db .Height ();_ef :=_eb !=0||_b !=0;if !_f &&!_ef {return nil ;};_fe :=func (_ge ,_fb ,_ee float64 )_dg .BoundingBox {return _dg .Path {Points :[]_dg .Point {_dg .NewPoint (0,0).Rotate (_ee ),_dg .NewPoint (_ge ,0).Rotate (_ee ),_dg .NewPoint (0,_fb ).Rotate (_ee ),_dg .NewPoint (_ge ,_fb ).Rotate (_ee )}}.GetBoundingBox ();
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};_a :=_c .NewContentCreator ();var _bd float64 ;if _f {_bd =-float64 (_gbb );_ec :=_fe (_ba ,_dbd ,_bd );_a .Translate ((_ec .Width -_ba )/2+_ba /2,(_ec .Height -_dbd )/2+_dbd /2);_a .RotateDeg (_bd );_a .Translate (-_ba /2,-_dbd /2);_ba ,_dbd =_ec .Width ,_ec .Height ;
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};if _ef {_a .Translate (-_eb ,-_b );};_ac :=_a .Operations ();_af ,_e :=_gbe .MakeStream (_ac .Bytes (),_gbe .NewFlateEncoder ());if _e !=nil {return _e ;};_bf :=_gbe .MakeArray (_af );_bf .Append (page .GetContentStreamObjs ()...);*_db =_gb .PdfRectangle {Urx :_ba ,Ury :_dbd };
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if _ecd :=page .CropBox ;_ecd !=nil {_ecd .Normalize ();_eba ,_fbg ,_ed ,_cb :=_ecd .Llx -_eb ,_ecd .Lly -_b ,_ecd .Width (),_ecd .Height ();if _f {_ca :=_fe (_ed ,_cb ,_bd );_ed ,_cb =_ca .Width ,_ca .Height ;};*_ecd =_gb .PdfRectangle {Llx :_eba ,Lly :_fbg ,Urx :_eba +_ed ,Ury :_fbg +_cb };
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};_d .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",_bd ,_ac ,_db );page .Contents =_bf ;page .Rotate =nil ;
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return nil ;}; |