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35 lines
3.5 KiB
Go
35 lines
3.5 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 (_g "github.com/unidoc/unipdf/v3/common";_b "github.com/unidoc/unipdf/v3/contentstream";_gda "github.com/unidoc/unipdf/v3/contentstream/draw";_gd "github.com/unidoc/unipdf/v3/core";_ge "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 *_ge .PdfPage )error {_bb ,_d :=page .GetMediaBox ();if _d !=nil {return _d ;};_de ,_d :=page .GetRotate ();if _d !=nil {_g .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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};_ded :=_de %360!=0&&_de %90==0;_bb .Normalize ();_eg ,_egd ,_deb ,_bc :=_bb .Llx ,_bb .Lly ,_bb .Width (),_bb .Height ();_bce :=_eg !=0||_egd !=0;if !_ded &&!_bce {return nil ;};_c :=func (_a ,_ab ,_dg float64 )_gda .BoundingBox {return _gda .Path {Points :[]_gda .Point {_gda .NewPoint (0,0).Rotate (_dg ),_gda .NewPoint (_a ,0).Rotate (_dg ),_gda .NewPoint (0,_ab ).Rotate (_dg ),_gda .NewPoint (_a ,_ab ).Rotate (_dg )}}.GetBoundingBox ();
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};_f :=_b .NewContentCreator ();var _gg float64 ;if _ded {_gg =-float64 (_de );_gdab :=_c (_deb ,_bc ,_gg );_f .Translate ((_gdab .Width -_deb )/2+_deb /2,(_gdab .Height -_bc )/2+_bc /2);_f .RotateDeg (_gg );_f .Translate (-_deb /2,-_bc /2);_deb ,_bc =_gdab .Width ,_gdab .Height ;
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};if _bce {_f .Translate (-_eg ,-_egd );};_egg :=_f .Operations ();_df ,_d :=_gd .MakeStream (_egg .Bytes (),_gd .NewFlateEncoder ());if _d !=nil {return _d ;};_ad :=_gd .MakeArray (_df );_ad .Append (page .GetContentStreamObjs ()...);*_bb =_ge .PdfRectangle {Urx :_deb ,Ury :_bc };
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if _dgg :=page .CropBox ;_dgg !=nil {_dgg .Normalize ();_bf ,_cb ,_cf ,_ff :=_dgg .Llx -_eg ,_dgg .Lly -_egd ,_dgg .Width (),_dgg .Height ();if _ded {_af :=_c (_cf ,_ff ,_gg );_cf ,_ff =_af .Width ,_af .Height ;};*_dgg =_ge .PdfRectangle {Llx :_bf ,Lly :_cb ,Urx :_bf +_cf ,Ury :_cb +_ff };
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};_g .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",_gg ,_egg ,_bb );page .Contents =_ad ;page .Rotate =nil ;
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return nil ;}; |