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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 (_e "github.com/unidoc/unipdf/v3/common";_c "github.com/unidoc/unipdf/v3/contentstream";_f "github.com/unidoc/unipdf/v3/contentstream/draw";_a "github.com/unidoc/unipdf/v3/core";_ec "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 *_ec .PdfPage )error {_ac ,_cb :=page .GetMediaBox ();if _cb !=nil {return _cb ;};_aa ,_cb :=page .GetRotate ();if _cb !=nil {_e .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",_cb .Error ());
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};_ca :=_aa %360!=0&&_aa %90==0;_ac .Normalize ();_ae ,_d ,_dd ,_fc :=_ac .Llx ,_ac .Lly ,_ac .Width (),_ac .Height ();_eg :=_ae !=0||_d !=0;if !_ca &&!_eg {return nil ;};_ee :=func (_bc ,_fe ,_ege float64 )_f .BoundingBox {return _f .Path {Points :[]_f .Point {_f .NewPoint (0,0).Rotate (_ege ),_f .NewPoint (_bc ,0).Rotate (_ege ),_f .NewPoint (0,_fe ).Rotate (_ege ),_f .NewPoint (_bc ,_fe ).Rotate (_ege )}}.GetBoundingBox ();
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};_fd :=_c .NewContentCreator ();var _da float64 ;if _ca {_da =-float64 (_aa );_cf :=_ee (_dd ,_fc ,_da );_fd .Translate ((_cf .Width -_dd )/2+_dd /2,(_cf .Height -_fc )/2+_fc /2);_fd .RotateDeg (_da );_fd .Translate (-_dd /2,-_fc /2);_dd ,_fc =_cf .Width ,_cf .Height ;
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};if _eg {_fd .Translate (-_ae ,-_d );};_ef :=_fd .Operations ();_dg ,_cb :=_a .MakeStream (_ef .Bytes (),_a .NewFlateEncoder ());if _cb !=nil {return _cb ;};_dc :=_a .MakeArray (_dg );_dc .Append (page .GetContentStreamObjs ()...);*_ac =_ec .PdfRectangle {Urx :_dd ,Ury :_fc };
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if _fa :=page .CropBox ;_fa !=nil {_fa .Normalize ();_db ,_cg ,_aae ,_ad :=_fa .Llx -_ae ,_fa .Lly -_d ,_fa .Width (),_fa .Height ();if _ca {_cbg :=_ee (_aae ,_ad ,_da );_aae ,_ad =_cbg .Width ,_cbg .Height ;};*_fa =_ec .PdfRectangle {Llx :_db ,Lly :_cg ,Urx :_db +_aae ,Ury :_cg +_ad };
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};_e .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",_da ,_ef ,_ac );page .Contents =_dc ;page .Rotate =nil ;
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return nil ;}; |