unipdf/annotator/annotator.go

//
// Copyright 2020 FoxyUtils ehf. All rights reserved.
//
// This is a commercial product and requires a license to operate.
// A trial license can be obtained at https://unidoc.io
//
// DO NOT EDIT: generated by unitwist Go source code obfuscator.
//
// Use of this source code is governed by the UniDoc End User License Agreement
// terms that can be accessed at https://unidoc.io/eula/

// Package annotator provides an interface for creating annotations with appearance
// streams.  It goes beyond the models package which includes definitions of basic annotation models, in that it
// can create the appearance streams which specify the exact appearance as needed by many pdf viewers for consistent
// appearance of the annotations.
// It also contains methods for generating appearance streams for fields via widget annotations.
package annotator ;import (_a "bytes";_d "errors";_b "github.com/unidoc/unipdf/v3/common";_cd "github.com/unidoc/unipdf/v3/contentstream";_ge "github.com/unidoc/unipdf/v3/contentstream/draw";_cg "github.com/unidoc/unipdf/v3/core";_c "github.com/unidoc/unipdf/v3/internal/textencoding";
_fgd "github.com/unidoc/unipdf/v3/model";_fg "image";_f "math";_af "strings";_g "unicode";);func (_fgfd *AppearanceStyle )applyAppearanceCharacteristics (_fgba *_cg .PdfObjectDictionary ,_ede *_cg .PdfObjectDictionary ,_bfg *_fgd .PdfFont )error {if !_fgfd .AllowMK {return nil ;
};if CA ,_fbe :=_cg .GetString (_fgba .Get ("\u0043\u0041"));_fbe &&_bfg !=nil {_bad :=CA .Bytes ();if len (_bad )!=0{_fgfc :=[]rune (_bfg .Encoder ().Decode (_bad ));if len (_fgfc )==1{_fgfd .CheckmarkRune =_fgfc [0];};};};if BC ,_dge :=_cg .GetArray (_fgba .Get ("\u0042\u0043"));
_dge {_ace ,_efbdf :=BC .ToFloat64Array ();if _efbdf !=nil {return _efbdf ;};switch len (_ace ){case 1:_fgfd .BorderColor =_fgd .NewPdfColorDeviceGray (_ace [0]);case 3:_fgfd .BorderColor =_fgd .NewPdfColorDeviceRGB (_ace [0],_ace [1],_ace [2]);case 4:_fgfd .BorderColor =_fgd .NewPdfColorDeviceCMYK (_ace [0],_ace [1],_ace [2],_ace [3]);
default:_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0042\u0043\u0020\u002d\u0020\u0049\u006e\u0076\u0061\u006c\u0069\u0064 \u006e\u0075\u006d\u0062\u0065\u0072\u0020\u006f\u0066\u0020\u0063\u006f\u006c\u006f\u0072\u0020\u0063\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074\u0073\u0020\u0028\u0025\u0064)",len (_ace ));
};if _ede !=nil {if _bcd ,_gaa :=_cg .GetNumberAsFloat (_ede .Get ("\u0057"));_gaa ==nil {_fgfd .BorderSize =_bcd ;};};};if BG ,_fad :=_cg .GetArray (_fgba .Get ("\u0042\u0047"));_fad {_afgc ,_fccd :=BG .ToFloat64Array ();if _fccd !=nil {return _fccd ;
};switch len (_afgc ){case 1:_fgfd .FillColor =_fgd .NewPdfColorDeviceGray (_afgc [0]);case 3:_fgfd .FillColor =_fgd .NewPdfColorDeviceRGB (_afgc [0],_afgc [1],_afgc [2]);case 4:_fgfd .FillColor =_fgd .NewPdfColorDeviceCMYK (_afgc [0],_afgc [1],_afgc [2],_afgc [3]);
default:_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0042\u0047\u0020\u002d\u0020\u0049\u006e\u0076\u0061\u006c\u0069\u0064 \u006e\u0075\u006d\u0062\u0065\u0072\u0020\u006f\u0066\u0020\u0063\u006f\u006c\u006f\u0072\u0020\u0063\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074\u0073\u0020\u0028\u0025\u0064)",len (_afgc ));
};};return nil ;};

// Style returns the appearance style of `fa`. If not specified, returns default style.
func (_gfef ImageFieldAppearance )Style ()AppearanceStyle {if _gfef ._aaff !=nil {return *_gfef ._aaff ;};return AppearanceStyle {BorderSize :0.0,BorderColor :_fgd .NewPdfColorDeviceGray (0),FillColor :_fgd .NewPdfColorDeviceGray (1),DrawAlignmentReticle :false };
};

// SignatureImagePosition specifies the image signature location relative to the text signature.
// If text signature is not defined, this position will be ignored.
type SignatureImagePosition int ;func _dfb (_dbed *_fgd .PdfAnnotationWidget ,_bcg *_fgd .PdfFieldText ,_ceg *_fgd .PdfPageResources ,_aab AppearanceStyle )(*_cg .PdfObjectDictionary ,error ){_cecd :=_fgd .NewPdfPageResources ();_abe ,_aeb :=_cg .GetArray (_dbed .Rect );
if !_aeb {return nil ,_d .New ("\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0052\u0065\u0063\u0074");};_eed ,_eec :=_fgd .NewPdfRectangle (*_abe );if _eec !=nil {return nil ,_eec ;};_abb ,_bgg :=_eed .Width (),_eed .Height ();_cggg ,_cgad :=_abb ,_bgg ;
_dde ,_add :=_cg .GetDict (_dbed .MK );if _add {_bdbg ,_ :=_cg .GetDict (_dbed .BS );_ddb :=_aab .applyAppearanceCharacteristics (_dde ,_bdbg ,nil );if _ddb !=nil {return nil ,_ddb ;};};_afab ,_add :=_cg .GetIntVal (_bcg .MaxLen );if !_add {return nil ,_d .New ("\u006d\u0061\u0078\u006c\u0065\u006e\u0020\u006e\u006ft\u0020\u0073\u0065\u0074");
};if _afab <=0{return nil ,_d .New ("\u006d\u0061\u0078\u004c\u0065\u006e\u0020\u0069\u006ev\u0061\u006c\u0069\u0064");};_ggd :=_abb /float64 (_afab );_dgf ,_eec :=_cd .NewContentStreamParser (_ecdg (_bcg .PdfField )).Parse ();if _eec !=nil {return nil ,_eec ;
};_bbdg :=_cd .NewContentCreator ();if _aab .BorderSize > 0{_ffdc (_bbdg ,_aab ,_abb ,_bgg );};if _aab .DrawAlignmentReticle {_efd :=_aab ;_efd .BorderSize =0.2;_dcb (_bbdg ,_efd ,_abb ,_bgg );};_bbdg .Add_BMC ("\u0054\u0078");_bbdg .Add_q ();_ ,_bgg =_aab .applyRotation (_dde ,_abb ,_bgg ,_bbdg );
_bbdg .Add_BT ();_faad ,_dfd ,_eec :=_aab .processDA (_bcg .PdfField ,_dgf ,_ceg ,_cecd ,_bbdg );if _eec !=nil {return nil ,_eec ;};_ecc :=_faad .Font ;_afga :=_cg .MakeName (_faad .Name );_eba :=_faad .Size ;_bgdf :=_eba ==0;if _bgdf &&_dfd {_eba =_bgg *_aab .AutoFontSizeFraction ;
};_cbd :=_ecc .Encoder ();if _cbd ==nil {_b .Log .Debug ("\u0057\u0041RN\u003a\u0020\u0066\u006f\u006e\u0074\u0020\u0065\u006e\u0063\u006f\u0064\u0065\u0072\u0020\u0069\u0073\u0020\u006e\u0069l\u002e\u0020\u0041\u0073s\u0075\u006d\u0069\u006eg \u0069\u0064e\u006et\u0069\u0074\u0079\u0020\u0065\u006ec\u006f\u0064\u0065r\u002e\u0020O\u0075\u0074\u0070\u0075\u0074\u0020\u006d\u0061\u0079\u0020\u0062\u0065\u0020\u0069n\u0063\u006f\u0072\u0072\u0065\u0063\u0074\u002e");
_cbd =_c .NewIdentityTextEncoder ("\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079\u002d\u0048");};var _aaf string ;if _gcfg ,_afge :=_cg .GetString (_bcg .V );_afge {_aaf =_gcfg .Decoded ();};_bbdg .Add_Tf (*_afga ,_eba );var _eedd float64 ;for _ ,_cfd :=range _aaf {_dce ,_debf :=_ecc .GetRuneMetrics (_cfd );
if !_debf {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a \u0052\u0075\u006e\u0065\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064\u0020\u0069\u006e\u0020\u0066\u006fn\u0074\u003a\u0020\u0025\u0076\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067 \u006f\u0076\u0065\u0072",_cfd );
continue ;};_gcfa :=_dce .Wy ;if int (_gcfa )<=0{_gcfa =_dce .Wx ;};if _gcfa > _eedd {_eedd =_gcfa ;};};if int (_eedd )==0{_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0055\u006e\u0061\u0062\u006c\u0065\u0020\u0074o\u0020\u0064\u0065\u0074\u0065\u0072\u006d\u0069\u006e\u0065\u0020\u006d\u0061x\u0020\u0067\u006c\u0079\u0070\u0068\u0020\u0073\u0069\u007a\u0065\u0020- \u0075\u0073\u0069\u006e\u0067\u0020\u0031\u0030\u0030\u0030");
_eedd =1000;};_bcge ,_eec :=_ecc .GetFontDescriptor ();if _eec !=nil {_b .Log .Debug ("\u0045\u0072ro\u0072\u003a\u0020U\u006e\u0061\u0062\u006ce t\u006f g\u0065\u0074\u0020\u0066\u006f\u006e\u0074 d\u0065\u0073\u0063\u0072\u0069\u0070\u0074o\u0072");};
var _eag float64 ;if _bcge !=nil {_eag ,_eec =_bcge .GetCapHeight ();if _eec !=nil {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0055\u006e\u0061\u0062\u006c\u0065 \u0074\u006f\u0020\u0067\u0065\u0074 \u0066\u006f\u006e\u0074\u0020\u0043\u0061\u0070\u0048\u0065\u0069\u0067\u0068t\u003a\u0020\u0025\u0076",_eec );
};};if int (_eag )<=0{_b .Log .Debug ("W\u0041\u0052\u004e\u003a\u0020\u0043\u0061\u0070\u0048e\u0069\u0067\u0068\u0074\u0020\u006e\u006ft \u0061\u0076\u0061\u0069l\u0061\u0062\u006c\u0065\u0020\u002d\u0020\u0073\u0065tt\u0069\u006eg\u0020\u0074\u006f\u0020\u0031\u0030\u0030\u0030");
_eag =1000.0;};_ffdd :=_eag /1000.0*_eba ;_cbe :=0.0;_aee :=1.0*_eba *(_eedd /1000.0);{_addc :=_aee ;if _bgdf &&_cbe +_addc > _bgg {_eba =0.95*(_bgg -_cbe );_ffdd =_eag /1000.0*_eba ;};if _bgg > _ffdd {_cbe =(_bgg -_ffdd )/2.0;};};_bbdg .Add_Td (0,_cbe );
if _cce ,_egg :=_cg .GetIntVal (_bcg .Q );_egg {switch _cce {case 2:if len (_aaf )< _afab {_ddd :=float64 (_afab -len (_aaf ))*_ggd ;_bbdg .Add_Td (_ddd ,0);};};};for _ddc ,_acc :=range _aaf {_dfde :=_cef ;if _aab .MarginLeft !=nil {_dfde =*_aab .MarginLeft ;
};_gdb :=string (_acc );if _cbd !=nil {_dbf ,_gfe :=_ecc .GetRuneMetrics (_acc );if !_gfe {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a \u0052\u0075\u006e\u0065\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064\u0020\u0069\u006e\u0020\u0066\u006fn\u0074\u003a\u0020\u0025\u0076\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067 \u006f\u0076\u0065\u0072",_acc );
continue ;};_gdb =string (_cbd .Encode (_gdb ));_efdg :=_eba *_dbf .Wx /1000.0;_gfg :=(_ggd -_efdg )/2;_dfde =_gfg ;};_bbdg .Add_Td (_dfde ,0);_bbdg .Add_Tj (*_cg .MakeString (_gdb ));if _ddc !=len (_aaf )-1{_bbdg .Add_Td (_ggd -_dfde ,0);};};_bbdg .Add_ET ();
_bbdg .Add_Q ();_bbdg .Add_EMC ();_fae :=_fgd .NewXObjectForm ();_fae .Resources =_cecd ;_fae .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_cggg ,_cgad });_fae .SetContentStream (_bbdg .Bytes (),_febf ());_efc :=_cg .MakeDict ();_efc .Set ("\u004e",_fae .ToPdfObject ());
return _efc ,nil ;};

// SetStyle applies appearance `style` to `fa`.
func (_cb *FieldAppearance )SetStyle (style AppearanceStyle ){_cb ._dd =&style };

// NewTextField generates a new text field with partial name `name` at location
// specified by `rect` on given `page` and with field specific options `opt`.
func NewTextField (page *_fgd .PdfPage ,name string ,rect []float64 ,opt TextFieldOptions )(*_fgd .PdfFieldText ,error ){if page ==nil {return nil ,_d .New ("\u0070a\u0067e\u0020\u006e\u006f\u0074\u0020s\u0070\u0065c\u0069\u0066\u0069\u0065\u0064");};if len (name )<=0{return nil ,_d .New ("\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u0020\u0061\u0074\u0074\u0072\u0069\u0062u\u0074e\u0020\u006e\u006f\u0074\u0020\u0073\u0070\u0065\u0063\u0069\u0066\u0069\u0065\u0064");
};if len (rect )!=4{return nil ,_d .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0072\u0061\u006e\u0067\u0065");};_fbag :=_fgd .NewPdfField ();_acbd :=&_fgd .PdfFieldText {};_fbag .SetContext (_acbd );_acbd .PdfField =_fbag ;_acbd .T =_cg .MakeString (name );
if opt .MaxLen > 0{_acbd .MaxLen =_cg .MakeInteger (int64 (opt .MaxLen ));};if len (opt .Value )> 0{_acbd .V =_cg .MakeString (opt .Value );};_ffbg :=_fgd .NewPdfAnnotationWidget ();_ffbg .Rect =_cg .MakeArrayFromFloats (rect );_ffbg .P =page .ToPdfObject ();
_ffbg .F =_cg .MakeInteger (4);_ffbg .Parent =_acbd .ToPdfObject ();_acbd .Annotations =append (_acbd .Annotations ,_ffbg );return _acbd ,nil ;};

// Style returns the appearance style of `fa`. If not specified, returns default style.
func (_be FieldAppearance )Style ()AppearanceStyle {if _be ._dd !=nil {return *_be ._dd ;};_gf :=_cef ;return AppearanceStyle {AutoFontSizeFraction :0.65,CheckmarkRune :'✔',BorderSize :0.0,BorderColor :_fgd .NewPdfColorDeviceGray (0),FillColor :_fgd .NewPdfColorDeviceGray (1),MultilineLineHeight :1.2,MultilineVAlignMiddle :false ,DrawAlignmentReticle :false ,AllowMK :true ,MarginLeft :&_gf };
};

// GenerateAppearanceDict generates an appearance dictionary for widget annotation `wa` for the `field` in `form`.
// Implements interface model.FieldAppearanceGenerator.
func (_afbg ImageFieldAppearance )GenerateAppearanceDict (form *_fgd .PdfAcroForm ,field *_fgd .PdfField ,wa *_fgd .PdfAnnotationWidget )(*_cg .PdfObjectDictionary ,error ){_ ,_cedd :=field .GetContext ().(*_fgd .PdfFieldButton );if !_cedd {_b .Log .Trace ("C\u006f\u0075\u006c\u0064\u0020\u006fn\u006c\u0079\u0020\u0068\u0061\u006ed\u006c\u0065\u0020\u0062\u0075\u0074\u0074o\u006e\u0020\u002d\u0020\u0069\u0067\u006e\u006f\u0072\u0069n\u0067");
return nil ,nil ;};_gdd ,_cgba :=_cg .GetDict (wa .AP );if _cgba &&_afbg .OnlyIfMissing {_b .Log .Trace ("\u0041\u006c\u0072\u0065a\u0064\u0079\u0020\u0070\u006f\u0070\u0075\u006c\u0061\u0074e\u0064 \u002d\u0020\u0069\u0067\u006e\u006f\u0072i\u006e\u0067");
return _gdd ,nil ;};if form .DR ==nil {form .DR =_fgd .NewPdfPageResources ();};switch _bfeb :=field .GetContext ().(type ){case *_fgd .PdfFieldButton :if _bfeb .IsPush (){_bdfd ,_acfc :=_bfebg (_bfeb ,wa ,_afbg .Style ());if _acfc !=nil {return nil ,_acfc ;
};return _bdfd ,nil ;};};return nil ,nil ;};

// CircleAnnotationDef defines a circle annotation or ellipse at position (X, Y) and Width and Height.
// The annotation has various style parameters including Fill and Border options and Opacity.
type CircleAnnotationDef struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_fgd .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_fgd .PdfColorDeviceRGB ;Opacity float64 ;};

// LineAnnotationDef defines a line between point 1 (X1,Y1) and point 2 (X2,Y2).  The line ending styles can be none
// (regular line), or arrows at either end.  The line also has a specified width, color and opacity.
type LineAnnotationDef struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_fgd .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 _ge .LineEndingStyle ;LineEndingStyle2 _ge .LineEndingStyle ;};

// CheckboxFieldOptions defines optional parameters for a checkbox field a form.
type CheckboxFieldOptions struct{Checked bool ;};

// GenerateAppearanceDict generates an appearance dictionary for widget annotation `wa` for the `field` in `form`.
// Implements interface model.FieldAppearanceGenerator.
func (_cfg FieldAppearance )GenerateAppearanceDict (form *_fgd .PdfAcroForm ,field *_fgd .PdfField ,wa *_fgd .PdfAnnotationWidget )(*_cg .PdfObjectDictionary ,error ){_b .Log .Trace ("\u0047\u0065n\u0065\u0072\u0061\u0074e\u0041\u0070p\u0065\u0061\u0072\u0061\u006e\u0063\u0065\u0044i\u0063\u0074\u0020\u0066\u006f\u0072\u0020\u0025\u0076\u0020\u0020\u0056:\u0020\u0025\u002b\u0076",field .PartialName (),field .V );
_ ,_cbf :=field .GetContext ().(*_fgd .PdfFieldText );_bce ,_ga :=_cg .GetDict (wa .AP );if _ga &&_cfg .OnlyIfMissing &&(!_cbf ||!_cfg .RegenerateTextFields ){_b .Log .Trace ("\u0041\u006c\u0072\u0065a\u0064\u0079\u0020\u0070\u006f\u0070\u0075\u006c\u0061\u0074e\u0064 \u002d\u0020\u0069\u0067\u006e\u006f\u0072i\u006e\u0067");
return _bce ,nil ;};if form .DR ==nil {form .DR =_fgd .NewPdfPageResources ();};switch _feb :=field .GetContext ().(type ){case *_fgd .PdfFieldText :_ffc :=_feb ;switch {case _ffc .Flags ().Has (_fgd .FieldFlagPassword ):return nil ,nil ;case _ffc .Flags ().Has (_fgd .FieldFlagFileSelect ):return nil ,nil ;
case _ffc .Flags ().Has (_fgd .FieldFlagComb ):if _ffc .MaxLen !=nil {_afg ,_abg :=_dfb (wa ,_ffc ,form .DR ,_cfg .Style ());if _abg !=nil {return nil ,_abg ;};return _afg ,nil ;};};_beg ,_aa :=_de (wa ,_ffc ,form .DR ,_cfg .Style ());if _aa !=nil {return nil ,_aa ;
};return _beg ,nil ;case *_fgd .PdfFieldButton :_dgg :=_feb ;if _dgg .IsCheckbox (){_ed ,_eee :=_dad (wa ,_dgg ,form .DR ,_cfg .Style ());if _eee !=nil {return nil ,_eee ;};return _ed ,nil ;};_b .Log .Debug ("\u0054\u004f\u0044\u004f\u003a\u0020\u0055\u004e\u0048\u0041\u004e\u0044\u004c\u0045\u0044 \u0062u\u0074\u0074\u006f\u006e\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u002b\u0076",_dgg .GetType ());
case *_fgd .PdfFieldChoice :_afd :=_feb ;switch {case _afd .Flags ().Has (_fgd .FieldFlagCombo ):_febc ,_gc :=_dea (form ,wa ,_afd ,_cfg .Style ());if _gc !=nil {return nil ,_gc ;};return _febc ,nil ;default:_b .Log .Debug ("\u0054\u004f\u0044\u004f\u003a\u0020\u0055N\u0048\u0041\u004eD\u004c\u0045\u0044\u0020c\u0068\u006f\u0069\u0063\u0065\u0020\u0066\u0069\u0065\u006c\u0064\u0020\u0077\u0069\u0074\u0068\u0020\u0066\u006c\u0061\u0067\u0073\u003a\u0020\u0025\u0073",_afd .Flags ().String ());
};default:_b .Log .Debug ("\u0054\u004f\u0044\u004f\u003a\u0020\u0055\u004e\u0048\u0041N\u0044\u004c\u0045\u0044\u0020\u0066\u0069e\u006c\u0064\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_feb );};return nil ,nil ;};func _ggdd (_gdag ,_badg float64 ,_gfgc *_fgd .Image ,_gab AppearanceStyle )(*_fgd .XObjectForm ,error ){_babg ,_fbcb :=_fgd .NewXObjectImageFromImage (_gfgc ,nil ,_cg .NewFlateEncoder ());
if _fbcb !=nil {return nil ,_fbcb ;};_babg .Decode =_cg .MakeArrayFromFloats ([]float64 {0.0,1.0,0.0,1.0,0.0,1.0});_ffdfd :=_fgd .NewPdfPageResources ();_ffdfd .ProcSet =_cg .MakeArray (_cg .MakeName ("\u0050\u0044\u0046"),_cg .MakeName ("\u0049\u006d\u0061\u0067\u0065\u0043"));
_ffdfd .SetXObjectImageByName (_cg .PdfObjectName ("\u0049\u006d\u0030"),_babg );_bbe :=_cd .NewContentCreator ();_bbe .Add_q ();_bbe .Add_cm (float64 (_gfgc .Width ),0,0,float64 (_gfgc .Height ),0,0);_bbe .Add_Do ("\u0049\u006d\u0030");_bbe .Add_Q ();
_bdce :=_fgd .NewXObjectForm ();_bdce .FormType =_cg .MakeInteger (1);_bdce .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,float64 (_gfgc .Width ),float64 (_gfgc .Height )});_bdce .Resources =_ffdfd ;_bdce .SetContentStream (_bbe .Bytes (),_febf ());return _bdce ,nil ;
};

// RectangleAnnotationDef is a rectangle defined with a specified Width and Height and a lower left corner at (X,Y).
// The rectangle can optionally have a border and a filling color.
// The Width/Height includes the border (if any specified).
type RectangleAnnotationDef struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_fgd .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_fgd .PdfColorDeviceRGB ;Opacity float64 ;};func _ff (_bdf CircleAnnotationDef ,_bg string )([]byte ,*_fgd .PdfRectangle ,*_fgd .PdfRectangle ,error ){_fed :=_ge .Circle {X :_bdf .X ,Y :_bdf .Y ,Width :_bdf .Width ,Height :_bdf .Height ,FillEnabled :_bdf .FillEnabled ,FillColor :_bdf .FillColor ,BorderEnabled :_bdf .BorderEnabled ,BorderWidth :_bdf .BorderWidth ,BorderColor :_bdf .BorderColor ,Opacity :_bdf .Opacity };
_bc ,_bde ,_ea :=_fed .Draw (_bg );if _ea !=nil {return nil ,nil ,nil ,_ea ;};_ffd :=&_fgd .PdfRectangle {};_ffd .Llx =_bdf .X +_bde .Llx ;_ffd .Lly =_bdf .Y +_bde .Lly ;_ffd .Urx =_bdf .X +_bde .Urx ;_ffd .Ury =_bdf .Y +_bde .Ury ;return _bc ,_bde ,_ffd ,nil ;
};

// NewSignatureFieldOpts returns a new initialized instance of options
// used to generate a signature appearance.
func NewSignatureFieldOpts ()*SignatureFieldOpts {return &SignatureFieldOpts {Font :_fgd .DefaultFont (),FontSize :10,LineHeight :1,AutoSize :true ,TextColor :_fgd .NewPdfColorDeviceGray (0),BorderColor :_fgd .NewPdfColorDeviceGray (0),FillColor :_fgd .NewPdfColorDeviceGray (1),Encoder :_cg .NewFlateEncoder (),ImagePosition :SignatureImageLeft };
};

// SignatureLine represents a line of information in the signature field appearance.
type SignatureLine struct{Desc string ;Text string ;};

// ComboboxFieldOptions defines optional parameters for a combobox form field.
type ComboboxFieldOptions struct{

// Choices is the list of string values that can be selected.
Choices []string ;};

// TextFieldOptions defines optional parameter for a text field in a form.
type TextFieldOptions struct{MaxLen int ;Value string ;};

// ImageFieldAppearance implements interface model.FieldAppearanceGenerator and generates appearance streams
// for attaching an image to a button field.
type ImageFieldAppearance struct{OnlyIfMissing bool ;_aaff *AppearanceStyle ;};

// NewImageField generates a new image field with partial name `name` at location `rect`
// on specified `page` and with field specific options `opt`.
func NewImageField (page *_fgd .PdfPage ,name string ,rect []float64 ,opt ImageFieldOptions )(*_fgd .PdfFieldButton ,error ){if page ==nil {return nil ,_d .New ("\u0070a\u0067e\u0020\u006e\u006f\u0074\u0020s\u0070\u0065c\u0069\u0066\u0069\u0065\u0064");
};if len (name )<=0{return nil ,_d .New ("\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u0020\u0061\u0074\u0074\u0072\u0069\u0062u\u0074e\u0020\u006e\u006f\u0074\u0020\u0073\u0070\u0065\u0063\u0069\u0066\u0069\u0065\u0064");};if len (rect )!=4{return nil ,_d .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0072\u0061\u006e\u0067\u0065");
};_bea :=_fgd .NewPdfField ();_gcad :=&_fgd .PdfFieldButton {};_gcad .PdfField =_bea ;_bea .SetContext (_gcad );_gcad .SetType (_fgd .ButtonTypePush );_gcad .T =_cg .MakeString (name );_ebc :=_fgd .NewPdfAnnotationWidget ();_ebc .Rect =_cg .MakeArrayFromFloats (rect );
_ebc .P =page .ToPdfObject ();_ebc .F =_cg .MakeInteger (4);_ebc .Parent =_gcad .ToPdfObject ();_eda :=rect [2]-rect [0];_gdfc :=rect [3]-rect [1];_fcag :=opt ._gbdf ;_gbcd :=_cd .NewContentCreator ();if _fcag .BorderSize > 0{_ffdc (_gbcd ,_fcag ,_eda ,_gdfc );
};if _fcag .DrawAlignmentReticle {_gcec :=_fcag ;_gcec .BorderSize =0.2;_dcb (_gbcd ,_gcec ,_eda ,_gdfc );};_faeb ,_abeg :=_ggdd (_eda ,_gdfc ,opt .Image ,_fcag );if _abeg !=nil {return nil ,_abeg ;};_dfdb ,_adcb :=_cg .GetDict (_ebc .MK );if _adcb {_dfdb .Set ("\u006c",_faeb .ToPdfObject ());
};_ecbbe :=_cg .MakeDict ();_ecbbe .Set ("\u0046\u0052\u004d",_faeb .ToPdfObject ());_gfc :=_fgd .NewPdfPageResources ();_gfc .ProcSet =_cg .MakeArray (_cg .MakeName ("\u0050\u0044\u0046"));_gfc .XObject =_ecbbe ;_aecd :=_eda -2;_cgab :=_gdfc -2;_gbcd .Add_q ();
_gbcd .Add_re (1,1,_aecd ,_cgab );_gbcd .Add_W ();_gbcd .Add_n ();_aecd -=2;_cgab -=2;_gbcd .Add_q ();_gbcd .Add_re (2,2,_aecd ,_cgab );_gbcd .Add_W ();_gbcd .Add_n ();_gcgd :=_f .Min (_aecd /float64 (opt .Image .Width ),_cgab /float64 (opt .Image .Height ));
_gbcd .Add_cm (_gcgd ,0,0,_gcgd ,(_eda /2)-(float64 (opt .Image .Width )*_gcgd /2)+2,2);_gbcd .Add_Do ("\u0046\u0052\u004d");_gbcd .Add_Q ();_gbcd .Add_Q ();_fab :=_fgd .NewXObjectForm ();_fab .FormType =_cg .MakeInteger (1);_fab .Resources =_gfc ;_fab .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_eda ,_gdfc });
_fab .Matrix =_cg .MakeArrayFromFloats ([]float64 {1.0,0.0,0.0,1.0,0.0,0.0});_fab .SetContentStream (_gbcd .Bytes (),_febf ());_fcga :=_cg .MakeDict ();_fcga .Set ("\u004e",_fab .ToPdfObject ());_ebc .AP =_fcga ;_gcad .Annotations =append (_gcad .Annotations ,_ebc );
return _gcad ,nil ;};

// AppearanceFont represents a font used for generating the appearance of a
// field in the filling/flattening process.
type AppearanceFont struct{

// Name represents the name of the font which will be added to the
// AcroForm resources (DR).
Name string ;

// Font represents the actual font used for the field appearance.
Font *_fgd .PdfFont ;

// Size represents the size of the font used for the field appearance.
// If the font size is 0, the value of the FallbackSize field of the
// AppearanceFontStyle is used, if set. Otherwise, the font size is
// calculated based on the available annotation height and on the
// AutoFontSizeFraction field of the AppearanceStyle.
Size float64 ;};func _cgea (_bdcd RectangleAnnotationDef ,_ffadd string )([]byte ,*_fgd .PdfRectangle ,*_fgd .PdfRectangle ,error ){_dacd :=_ge .Rectangle {X :0,Y :0,Width :_bdcd .Width ,Height :_bdcd .Height ,FillEnabled :_bdcd .FillEnabled ,FillColor :_bdcd .FillColor ,BorderEnabled :_bdcd .BorderEnabled ,BorderWidth :2*_bdcd .BorderWidth ,BorderColor :_bdcd .BorderColor ,Opacity :_bdcd .Opacity };
_gaac ,_afce ,_caaa :=_dacd .Draw (_ffadd );if _caaa !=nil {return nil ,nil ,nil ,_caaa ;};_efa :=&_fgd .PdfRectangle {};_efa .Llx =_bdcd .X +_afce .Llx ;_efa .Lly =_bdcd .Y +_afce .Lly ;_efa .Urx =_bdcd .X +_afce .Urx ;_efa .Ury =_bdcd .Y +_afce .Ury ;
return _gaac ,_afce ,_efa ,nil ;};func _dad (_ecb *_fgd .PdfAnnotationWidget ,_dcg *_fgd .PdfFieldButton ,_acg *_fgd .PdfPageResources ,_abcd AppearanceStyle )(*_cg .PdfObjectDictionary ,error ){_fgb ,_afgf :=_cg .GetArray (_ecb .Rect );if !_afgf {return nil ,_d .New ("\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0052\u0065\u0063\u0074");
};_eedc ,_gbdc :=_fgd .NewPdfRectangle (*_fgb );if _gbdc !=nil {return nil ,_gbdc ;};_cgc ,_abff :=_eedc .Width (),_eedc .Height ();_abd ,_fca :=_cgc ,_abff ;_b .Log .Debug ("\u0043\u0068\u0065\u0063kb\u006f\u0078\u002c\u0020\u0077\u0061\u0020\u0042\u0053\u003a\u0020\u0025\u0076",_ecb .BS );
_dbg ,_gbdc :=_fgd .NewStandard14Font ("\u005a\u0061\u0070f\u0044\u0069\u006e\u0067\u0062\u0061\u0074\u0073");if _gbdc !=nil {return nil ,_gbdc ;};_aea ,_afe :=_cg .GetDict (_ecb .MK );if _afe {_cacc ,_ :=_cg .GetDict (_ecb .BS );_egb :=_abcd .applyAppearanceCharacteristics (_aea ,_cacc ,_dbg );
if _egb !=nil {return nil ,_egb ;};};_cfa :=_fgd .NewXObjectForm ();{_bfd :=_cd .NewContentCreator ();if _abcd .BorderSize > 0{_ffdc (_bfd ,_abcd ,_cgc ,_abff );};if _abcd .DrawAlignmentReticle {_fda :=_abcd ;_fda .BorderSize =0.2;_dcb (_bfd ,_fda ,_cgc ,_abff );
};_cgc ,_abff =_abcd .applyRotation (_aea ,_cgc ,_abff ,_bfd );_efga :=_abcd .AutoFontSizeFraction *_abff ;_abgd ,_bgf :=_dbg .GetRuneMetrics (_abcd .CheckmarkRune );if !_bgf {return nil ,_d .New ("\u0067l\u0079p\u0068\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064");
};_cbb :=_dbg .Encoder ();_afea :=_cbb .Encode (string (_abcd .CheckmarkRune ));_fdd :=_abgd .Wx *_efga /1000.0;_afead :=705.0;_ade :=_afead /1000.0*_efga ;_fge :=_cef ;if _abcd .MarginLeft !=nil {_fge =*_abcd .MarginLeft ;};_cbeg :=1.0;if _fdd < _cgc {_fge =(_cgc -_fdd )/2.0;
};if _ade < _abff {_cbeg =(_abff -_ade )/2.0;};_bfd .Add_q ().Add_g (0).Add_BT ().Add_Tf ("\u005a\u0061\u0044\u0062",_efga ).Add_Td (_fge ,_cbeg ).Add_Tj (*_cg .MakeStringFromBytes (_afea )).Add_ET ().Add_Q ();_cfa .Resources =_fgd .NewPdfPageResources ();
_cfa .Resources .SetFontByName ("\u005a\u0061\u0044\u0062",_dbg .ToPdfObject ());_cfa .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_abd ,_fca });_cfa .SetContentStream (_bfd .Bytes (),_febf ());};_adeb :=_fgd .NewXObjectForm ();{_eeba :=_cd .NewContentCreator ();
if _abcd .BorderSize > 0{_ffdc (_eeba ,_abcd ,_cgc ,_abff );};_adeb .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_abd ,_fca });_adeb .SetContentStream (_eeba .Bytes (),_febf ());};_afb :=_cg .MakeDict ();_afb .Set ("\u004f\u0066\u0066",_adeb .ToPdfObject ());
_afb .Set ("\u0059\u0065\u0073",_cfa .ToPdfObject ());_ecg :=_cg .MakeDict ();_ecg .Set ("\u004e",_afb );return _ecg ,nil ;};

// SetStyle applies appearance `style` to `fa`.
func (_ccbg *ImageFieldAppearance )SetStyle (style AppearanceStyle ){_ccbg ._aaff =&style };func _ffcc (_bgag *_fgd .PdfField ,_deg ,_eeab float64 ,_cdb string ,_afec AppearanceStyle ,_gdac *_cd .ContentStreamOperations ,_fdc *_fgd .PdfPageResources ,_dfc *_cg .PdfObjectDictionary )(*_fgd .XObjectForm ,error ){_ccag :=_fgd .NewPdfPageResources ();
_befc ,_ebad :=_deg ,_eeab ;_cfbg :=_cd .NewContentCreator ();if _afec .BorderSize > 0{_ffdc (_cfbg ,_afec ,_deg ,_eeab );};if _afec .DrawAlignmentReticle {_gbcb :=_afec ;_gbcb .BorderSize =0.2;_dcb (_cfbg ,_gbcb ,_deg ,_eeab );};_cfbg .Add_BMC ("\u0054\u0078");
_cfbg .Add_q ();_cfbg .Add_BT ();_deg ,_eeab =_afec .applyRotation (_dfc ,_deg ,_eeab ,_cfbg );_bfb ,_fdcg ,_dba :=_afec .processDA (_bgag ,_gdac ,_fdc ,_ccag ,_cfbg );if _dba !=nil {return nil ,_dba ;};_fff :=_bfb .Font ;_fede :=_bfb .Size ;_ecd :=_cg .MakeName (_bfb .Name );
_faab :=_fede ==0;if _faab &&_fdcg {_fede =_eeab *_afec .AutoFontSizeFraction ;};_gac :=_fff .Encoder ();if _gac ==nil {_b .Log .Debug ("\u0057\u0041RN\u003a\u0020\u0066\u006f\u006e\u0074\u0020\u0065\u006e\u0063\u006f\u0064\u0065\u0072\u0020\u0069\u0073\u0020\u006e\u0069l\u002e\u0020\u0041\u0073s\u0075\u006d\u0069\u006eg \u0069\u0064e\u006et\u0069\u0074\u0079\u0020\u0065\u006ec\u006f\u0064\u0065r\u002e\u0020O\u0075\u0074\u0070\u0075\u0074\u0020\u006d\u0061\u0079\u0020\u0062\u0065\u0020\u0069n\u0063\u006f\u0072\u0072\u0065\u0063\u0074\u002e");
_gac =_c .NewIdentityTextEncoder ("\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079\u002d\u0048");};if len (_cdb )==0{return nil ,nil ;};_ecdf :=_cef ;if _afec .MarginLeft !=nil {_ecdf =*_afec .MarginLeft ;};_gcd :=0.0;if _gac !=nil {for _ ,_aeg :=range _cdb {_ege ,_gbdb :=_fff .GetRuneMetrics (_aeg );
if !_gbdb {_b .Log .Debug ("\u0046\u006f\u006e\u0074\u0020\u0064o\u0065\u0073\u0020\u006e\u006f\u0074\u0020\u0068\u0061\u0076\u0065\u0020\u0072\u0075\u006e\u0065\u0020\u006d\u0065\u0074r\u0069\u0063\u0073\u0020\u0066\u006f\u0072\u0020\u0025\u0076\u0020\u002d\u0020\u0073k\u0069p\u0070\u0069\u006e\u0067",_aeg );
continue ;};_gcd +=_ege .Wx ;};_cdb =string (_gac .Encode (_cdb ));};if _fede ==0||_faab &&_gcd > 0&&_ecdf +_gcd *_fede /1000.0> _deg {_fede =0.95*1000.0*(_deg -_ecdf )/_gcd ;};_egbb :=1.0*_fede ;_ggc :=2.0;{_eaa :=_egbb ;if _faab &&_ggc +_eaa > _eeab {_fede =0.95*(_eeab -_ggc );
_egbb =1.0*_fede ;_eaa =_egbb ;};if _eeab > _eaa {_ggc =(_eeab -_eaa )/2.0;_ggc +=1.50;};};_cfbg .Add_Tf (*_ecd ,_fede );_cfbg .Add_Td (_ecdf ,_ggc );_cfbg .Add_Tj (*_cg .MakeString (_cdb ));_cfbg .Add_ET ();_cfbg .Add_Q ();_cfbg .Add_EMC ();_dceb :=_fgd .NewXObjectForm ();
_dceb .Resources =_ccag ;_dceb .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_befc ,_ebad });_dceb .SetContentStream (_cfbg .Bytes (),_febf ());return _dceb ,nil ;};const (SignatureImageLeft SignatureImagePosition =iota ;SignatureImageRight ;SignatureImageTop ;
SignatureImageBottom ;);

// NewComboboxField generates a new combobox form field with partial name `name` at location `rect`
// on specified `page` and with field specific options `opt`.
func NewComboboxField (page *_fgd .PdfPage ,name string ,rect []float64 ,opt ComboboxFieldOptions )(*_fgd .PdfFieldChoice ,error ){if page ==nil {return nil ,_d .New ("\u0070a\u0067e\u0020\u006e\u006f\u0074\u0020s\u0070\u0065c\u0069\u0066\u0069\u0065\u0064");
};if len (name )<=0{return nil ,_d .New ("\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u0020\u0061\u0074\u0074\u0072\u0069\u0062u\u0074e\u0020\u006e\u006f\u0074\u0020\u0073\u0070\u0065\u0063\u0069\u0066\u0069\u0065\u0064");};if len (rect )!=4{return nil ,_d .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0072\u0061\u006e\u0067\u0065");
};_aead :=_fgd .NewPdfField ();_cbff :=&_fgd .PdfFieldChoice {};_aead .SetContext (_cbff );_cbff .PdfField =_aead ;_cbff .T =_cg .MakeString (name );_cbff .Opt =_cg .MakeArray ();for _ ,_agf :=range opt .Choices {_cbff .Opt .Append (_cg .MakeString (_agf ));
};_cbff .SetFlag (_fgd .FieldFlagCombo );_dbcb :=_fgd .NewPdfAnnotationWidget ();_dbcb .Rect =_cg .MakeArrayFromFloats (rect );_dbcb .P =page .ToPdfObject ();_dbcb .F =_cg .MakeInteger (4);_dbcb .Parent =_cbff .ToPdfObject ();_cbff .Annotations =append (_cbff .Annotations ,_dbcb );
return _cbff ,nil ;};type quadding int ;func _ae (_ab CircleAnnotationDef )(*_cg .PdfObjectDictionary ,*_fgd .PdfRectangle ,error ){_ce :=_fgd .NewXObjectForm ();_ce .Resources =_fgd .NewPdfPageResources ();_bda :="";if _ab .Opacity < 1.0{_aff :=_cg .MakeDict ();
_aff .Set ("\u0063\u0061",_cg .MakeFloat (_ab .Opacity ));_aff .Set ("\u0043\u0041",_cg .MakeFloat (_ab .Opacity ));_gd :=_ce .Resources .AddExtGState ("\u0067\u0073\u0031",_aff );if _gd !=nil {_b .Log .Debug ("U\u006e\u0061\u0062\u006c\u0065\u0020t\u006f\u0020\u0061\u0064\u0064\u0020\u0065\u0078\u0074g\u0073\u0074\u0061t\u0065 \u0067\u0073\u0031");
return nil ,nil ,_gd ;};_bda ="\u0067\u0073\u0031";};_ca ,_cf ,_fe ,_cc :=_ff (_ab ,_bda );if _cc !=nil {return nil ,nil ,_cc ;};_cc =_ce .SetContentStream (_ca ,nil );if _cc !=nil {return nil ,nil ,_cc ;};_ce .BBox =_cf .ToPdfObject ();_eb :=_cg .MakeDict ();
_eb .Set ("\u004e",_ce .ToPdfObject ());return _eb ,_fe ,nil ;};

// ImageFieldOptions defines optional parameters for a push button with image attach capability form field.
type ImageFieldOptions struct{Image *_fgd .Image ;_gbdf AppearanceStyle ;};func (_ffb *AppearanceStyle )processDA (_cdba *_fgd .PdfField ,_fdb *_cd .ContentStreamOperations ,_age ,_bab *_fgd .PdfPageResources ,_ffcg *_cd .ContentCreator )(*AppearanceFont ,bool ,error ){var _eef *AppearanceFont ;
var _eaf bool ;if _ffb .Fonts !=nil {if _ffb .Fonts .Fallback !=nil {_eef =_ffb .Fonts .Fallback ;};if _gdg :=_ffb .Fonts .FieldFallbacks ;_gdg !=nil {if _gga ,_cag :=_gdg [_cdba .PartialName ()];_cag {_eef =_gga ;}else if _befa ,_dbc :=_cdba .FullName ();
_dbc ==nil {if _bfdd ,_aeed :=_gdg [_befa ];_aeed {_eef =_bfdd ;};};};_eaf =_ffb .Fonts .ForceReplace ;};var _efgd string ;var _egf float64 ;var _gae bool ;if _fdb !=nil {for _ ,_ccg :=range *_fdb {if _ccg .Operand =="\u0054\u0066"&&len (_ccg .Params )==2{if _cgb ,_dcf :=_cg .GetNameVal (_ccg .Params [0]);
_dcf {_efgd =_cgb ;};if _acfb ,_gce :=_cg .GetNumberAsFloat (_ccg .Params [1]);_gce ==nil {_egf =_acfb ;};_gae =true ;continue ;};_ffcg .AddOperand (*_ccg );};};var _egd *AppearanceFont ;var _ggb _cg .PdfObject ;if _eaf &&_eef !=nil {_egd =_eef ;}else {if _age !=nil &&_efgd !=""{if _gagb ,_ccc :=_age .GetFontByName (*_cg .MakeName (_efgd ));
_ccc {if _bee ,_ccac :=_fgd .NewPdfFontFromPdfObject (_gagb );_ccac ==nil {_ggb =_gagb ;_egd =&AppearanceFont {Name :_efgd ,Font :_bee ,Size :_egf };}else {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052:\u0020\u0063\u006f\u0075\u006c\u0064\u0020\u006e\u006f\u0074\u0020\u006c\u006fa\u0064\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0061\u006e\u0063\u0065\u0020\u0066\u006f\u006e\u0074\u003a\u0020\u0025\u0076",_ccac );
};};};if _egd ==nil &&_eef !=nil {_egd =_eef ;};if _egd ==nil {_fce ,_bdac :=_fgd .NewStandard14Font ("\u0048e\u006c\u0076\u0065\u0074\u0069\u0063a");if _bdac !=nil {return nil ,false ,_bdac ;};_egd =&AppearanceFont {Name :"\u0048\u0065\u006c\u0076",Font :_fce ,Size :_egf };
};};if _egd .Size <=0&&_ffb .Fonts !=nil &&_ffb .Fonts .FallbackSize > 0{_egd .Size =_ffb .Fonts .FallbackSize ;};_gebb :=*_cg .MakeName (_egd .Name );if _ggb ==nil {_ggb =_egd .Font .ToPdfObject ();};if _age !=nil &&!_age .HasFontByName (_gebb ){_age .SetFontByName (_gebb ,_ggb );
};if _bab !=nil &&!_bab .HasFontByName (_gebb ){_bab .SetFontByName (_gebb ,_ggb );};return _egd ,_gae ,nil ;};

// NewSignatureLine returns a new signature line displayed as a part of the
// signature field appearance.
func NewSignatureLine (desc ,text string )*SignatureLine {return &SignatureLine {Desc :desc ,Text :text };};

// AppearanceFontStyle defines font style characteristics for form fields,
// used in the filling/flattening process.
type AppearanceFontStyle struct{

// Fallback represents a global font fallback, used for fields which do
// not specify a font in their default appearance (DA). The fallback is
// also used if there is a font specified in the DA, but it is not
// found in the AcroForm resources (DR).
Fallback *AppearanceFont ;

// FallbackSize represents a global font size fallback used for fields
// which do not specify a font size in their default appearance (DA).
// The fallback size is applied only if its value is larger than zero.
FallbackSize float64 ;

// FieldFallbacks defines font fallbacks for specific fields. The map keys
// represent the names of the fields (which can be specified by their
// partial or full names). Specific field fallback fonts take precedence
// over the global font fallback.
FieldFallbacks map[string ]*AppearanceFont ;

// ForceReplace forces the replacement of fonts in the filling/flattening
// process, even if the default appearance (DA) specifies a valid font.
// If no fallback font is provided, setting this field has no effect.
ForceReplace bool ;};

// WrapContentStream ensures that the entire content stream for a `page` is wrapped within q ... Q operands.
// Ensures that following operands that are added are not affected by additional operands that are added.
// Implements interface model.ContentStreamWrapper.
func (_ded FieldAppearance )WrapContentStream (page *_fgd .PdfPage )error {_ecf ,_dbb :=page .GetAllContentStreams ();if _dbb !=nil {return _dbb ;};_afeb :=_cd .NewContentStreamParser (_ecf );_bebe ,_dbb :=_afeb .Parse ();if _dbb !=nil {return _dbb ;};
_bebe .WrapIfNeeded ();_ega :=[]string {_bebe .String ()};return page .SetContentStreams (_ega ,_febf ());};func _ffdc (_fffg *_cd .ContentCreator ,_dgb AppearanceStyle ,_acca ,_faade float64 ){_fffg .Add_q ().Add_re (0,0,_acca ,_faade ).Add_w (_dgb .BorderSize ).SetStrokingColor (_dgb .BorderColor ).SetNonStrokingColor (_dgb .FillColor ).Add_B ().Add_Q ();
};

// CreateCircleAnnotation creates a circle/ellipse annotation object with appearance stream that can be added to
// page PDF annotations.
func CreateCircleAnnotation (circDef CircleAnnotationDef )(*_fgd .PdfAnnotation ,error ){_ac :=_fgd .NewPdfAnnotationCircle ();if circDef .BorderEnabled {_ee ,_bb ,_ef :=circDef .BorderColor .R (),circDef .BorderColor .G (),circDef .BorderColor .B ();_ac .C =_cg .MakeArrayFromFloats ([]float64 {_ee ,_bb ,_ef });
_gef :=_fgd .NewBorderStyle ();_gef .SetBorderWidth (circDef .BorderWidth );_ac .BS =_gef .ToPdfObject ();};if circDef .FillEnabled {_eea ,_da ,_gb :=circDef .FillColor .R (),circDef .FillColor .G (),circDef .FillColor .B ();_ac .IC =_cg .MakeArrayFromFloats ([]float64 {_eea ,_da ,_gb });
}else {_ac .IC =_cg .MakeArrayFromIntegers ([]int {});};if circDef .Opacity < 1.0{_ac .CA =_cg .MakeFloat (circDef .Opacity );};_bd ,_geb ,_geg :=_ae (circDef );if _geg !=nil {return nil ,_geg ;};_ac .AP =_bd ;_ac .Rect =_cg .MakeArrayFromFloats ([]float64 {_geb .Llx ,_geb .Lly ,_geb .Urx ,_geb .Ury });
return _ac .PdfAnnotation ,nil ;};func _dea (_afed *_fgd .PdfAcroForm ,_bag *_fgd .PdfAnnotationWidget ,_bcc *_fgd .PdfFieldChoice ,_eebb AppearanceStyle )(*_cg .PdfObjectDictionary ,error ){_cae ,_edc :=_cg .GetArray (_bag .Rect );if !_edc {return nil ,_d .New ("\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0052\u0065\u0063\u0074");
};_fcc ,_dec :=_fgd .NewPdfRectangle (*_cae );if _dec !=nil {return nil ,_dec ;};_baag ,_efdb :=_fcc .Width (),_fcc .Height ();_b .Log .Debug ("\u0043\u0068\u006f\u0069\u0063\u0065\u002c\u0020\u0077\u0061\u0020\u0042S\u003a\u0020\u0025\u0076",_bag .BS );
_ccda ,_dec :=_cd .NewContentStreamParser (_ecdg (_bcc .PdfField )).Parse ();if _dec !=nil {return nil ,_dec ;};_efbd ,_gbe :=_cg .GetDict (_bag .MK );if _gbe {_gdae ,_ :=_cg .GetDict (_bag .BS );_fec :=_eebb .applyAppearanceCharacteristics (_efbd ,_gdae ,nil );
if _fec !=nil {return nil ,_fec ;};};_faeg :=_cg .MakeDict ();for _ ,_acb :=range _bcc .Opt .Elements (){if _cca ,_bgab :=_cg .GetArray (_acb );_bgab &&_cca .Len ()==2{_acb =_cca .Get (1);};var _afc string ;if _edgb ,_bef :=_cg .GetString (_acb );_bef {_afc =_edgb .Decoded ();
}else if _fgg ,_bgfe :=_cg .GetName (_acb );_bgfe {_afc =_fgg .String ();}else {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a \u004f\u0070\u0074\u0020\u006e\u006f\u0074\u0020\u0061\u0020\u006e\u0061\u006de\u002f\u0073\u0074\u0072\u0069\u006e\u0067 \u002d\u0020\u0025\u0054",_acb );
return nil ,_d .New ("\u006e\u006f\u0074\u0020\u0061\u0020\u006e\u0061\u006d\u0065\u002f\u0073t\u0072\u0069\u006e\u0067");};if len (_afc )> 0{_aacc ,_cdg :=_ffcc (_bcc .PdfField ,_baag ,_efdb ,_afc ,_eebb ,_ccda ,_afed .DR ,_efbd );if _cdg !=nil {return nil ,_cdg ;
};_faeg .Set (*_cg .MakeName (_afc ),_aacc .ToPdfObject ());};};_cfbc :=_cg .MakeDict ();_cfbc .Set ("\u004e",_faeg );return _cfbc ,nil ;};func _ecfc (_aad []*SignatureLine ,_adc *SignatureFieldOpts )(*_cg .PdfObjectDictionary ,error ){if _adc ==nil {_adc =NewSignatureFieldOpts ();
};var _eccd error ;var _cdge *_cg .PdfObjectName ;_cfdg :=_adc .Font ;if _cfdg !=nil {_eace ,_ :=_cfdg .GetFontDescriptor ();if _eace !=nil {if _fbeg ,_bdc :=_eace .FontName .(*_cg .PdfObjectName );_bdc {_cdge =_fbeg ;};};if _cdge ==nil {_cdge =_cg .MakeName ("\u0046\u006f\u006et\u0031");
};}else {if _cfdg ,_eccd =_fgd .NewStandard14Font ("\u0048e\u006c\u0076\u0065\u0074\u0069\u0063a");_eccd !=nil {return nil ,_eccd ;};_cdge =_cg .MakeName ("\u0048\u0065\u006c\u0076");};_abda :=_adc .FontSize ;if _abda <=0{_abda =10;};if _adc .LineHeight <=0{_adc .LineHeight =1;
};_efcc :=_adc .LineHeight *_abda ;_cbbf ,_gdc :=_cfdg .GetRuneMetrics (' ');if !_gdc {return nil ,_d .New ("\u0074\u0068e \u0066\u006f\u006et\u0020\u0064\u006f\u0065s n\u006ft \u0068\u0061\u0076\u0065\u0020\u0061\u0020sp\u0061\u0063\u0065\u0020\u0067\u006c\u0079p\u0068");
};_dca :=_cbbf .Wx ;var _ageb float64 ;var _gcge []string ;for _ ,_bbf :=range _aad {if _bbf .Text ==""{continue ;};_dfbe :=_bbf .Text ;if _bbf .Desc !=""{_dfbe =_bbf .Desc +"\u003a\u0020"+_dfbe ;};_gcge =append (_gcge ,_dfbe );var _gca float64 ;for _ ,_abgg :=range _dfbe {_ebbb ,_bfeg :=_cfdg .GetRuneMetrics (_abgg );
if !_bfeg {continue ;};_gca +=_ebbb .Wx ;};if _gca > _ageb {_ageb =_gca ;};};_ageb =_ageb *_abda /1000.0;_aca :=float64 (len (_gcge ))*_efcc ;_gace :=_adc .Image !=nil ;_aada :=_adc .Rect ;if _aada ==nil {_aada =[]float64 {0,0,_ageb ,_aca };if _gace {_aada [2]=_ageb *2;
_aada [3]=_aca *2;};_adc .Rect =_aada ;};_agg :=_aada [2]-_aada [0];_egbe :=_aada [3]-_aada [1];_cade ,_feef :=_aada ,_aada ;var _cge ,_dgbd float64 ;if _gace &&len (_gcge )> 0{if _adc .ImagePosition <=SignatureImageRight {_ecbb :=[]float64 {_aada [0],_aada [1],_aada [0]+(_agg /2),_aada [3]};
_eagf :=[]float64 {_aada [0]+(_agg /2),_aada [1],_aada [2],_aada [3]};if _adc .ImagePosition ==SignatureImageLeft {_cade ,_feef =_ecbb ,_eagf ;}else {_cade ,_feef =_eagf ,_ecbb ;};}else {_efe :=[]float64 {_aada [0],_aada [1],_aada [2],_aada [1]+(_egbe /2)};
_gdf :=[]float64 {_aada [0],_aada [1]+(_egbe /2),_aada [2],_aada [3]};if _adc .ImagePosition ==SignatureImageTop {_cade ,_feef =_gdf ,_efe ;}else {_cade ,_feef =_efe ,_gdf ;};};};_cge =_feef [2]-_feef [0];_dgbd =_feef [3]-_feef [1];var _ffde float64 ;if _adc .AutoSize {if _ageb > _cge ||_aca > _dgbd {_eca :=_f .Min (_cge /_ageb ,_dgbd /_aca );
_abda *=_eca ;};_efcc =_adc .LineHeight *_abda ;_ffde +=(_dgbd -float64 (len (_gcge ))*_efcc )/2;};_eae :=_cd .NewContentCreator ();_ebf :=_fgd .NewPdfPageResources ();_ebf .SetFontByName (*_cdge ,_cfdg .ToPdfObject ());if _adc .BorderSize <=0{_adc .BorderSize =0;
_adc .BorderColor =_fgd .NewPdfColorDeviceGray (1);};if _adc .BorderColor ==nil {_adc .BorderColor =_fgd .NewPdfColorDeviceGray (1);};if _adc .FillColor ==nil {_adc .FillColor =_fgd .NewPdfColorDeviceGray (1);};_eae .Add_q ().SetNonStrokingColor (_adc .FillColor ).SetStrokingColor (_adc .BorderColor ).Add_w (_adc .BorderSize ).Add_re (_aada [0],_aada [1],_agg ,_egbe ).Add_B ().Add_Q ();
if _adc .WatermarkImage !=nil {_ebfe :=[]float64 {_aada [0],_aada [1],_aada [2],_aada [3]};_cffg ,_baae ,_bfa :=_fbg (_adc .WatermarkImage ,"\u0049\u006d\u0061\u0067\u0065\u0057\u0061\u0074\u0065r\u006d\u0061\u0072\u006b",_adc ,_ebfe ,_eae );if _bfa !=nil {return nil ,_bfa ;
};_ebf .SetXObjectImageByName (*_cffg ,_baae );};_eae .Add_q ();_eae .Translate (_feef [0],_feef [3]-_efcc -_ffde );_eae .Add_BT ();_ccaa :=_cfdg .Encoder ();for _ ,_ecfb :=range _gcge {var _gbce []byte ;for _ ,_cde :=range _ecfb {if _g .IsSpace (_cde ){if len (_gbce )> 0{_eae .SetNonStrokingColor (_adc .TextColor ).Add_Tf (*_cdge ,_abda ).Add_TL (_efcc ).Add_TJ ([]_cg .PdfObject {_cg .MakeStringFromBytes (_gbce )}...);
_gbce =nil ;};_eae .Add_Tf (*_cdge ,_abda ).Add_TL (_efcc ).Add_TJ ([]_cg .PdfObject {_cg .MakeFloat (-_dca )}...);}else {_gbce =append (_gbce ,_ccaa .Encode (string (_cde ))...);};};if len (_gbce )> 0{_eae .SetNonStrokingColor (_adc .TextColor ).Add_Tf (*_cdge ,_abda ).Add_TL (_efcc ).Add_TJ ([]_cg .PdfObject {_cg .MakeStringFromBytes (_gbce )}...);
};_eae .Add_Td (0,-_efcc );};_eae .Add_ET ();_eae .Add_Q ();if _gace {_eaea ,_ccb ,_aec :=_fbg (_adc .Image ,"\u0049\u006d\u0061\u0067\u0065\u0053\u0069\u0067\u006ea\u0074\u0075\u0072\u0065",_adc ,_cade ,_eae );if _aec !=nil {return nil ,_aec ;};_ebf .SetXObjectImageByName (*_eaea ,_ccb );
};_egfg :=_fgd .NewXObjectForm ();_egfg .Resources =_ebf ;_egfg .BBox =_cg .MakeArrayFromFloats (_aada );_egfg .SetContentStream (_eae .Bytes (),_febf ());_edfe :=_cg .MakeDict ();_edfe .Set ("\u004e",_egfg .ToPdfObject ());return _edfe ,nil ;};func _afda (_eeag RectangleAnnotationDef )(*_cg .PdfObjectDictionary ,*_fgd .PdfRectangle ,error ){_ddfd :=_fgd .NewXObjectForm ();
_ddfd .Resources =_fgd .NewPdfPageResources ();_dbba :="";if _eeag .Opacity < 1.0{_ffad :=_cg .MakeDict ();_ffad .Set ("\u0063\u0061",_cg .MakeFloat (_eeag .Opacity ));_ffad .Set ("\u0043\u0041",_cg .MakeFloat (_eeag .Opacity ));_fdgb :=_ddfd .Resources .AddExtGState ("\u0067\u0073\u0031",_ffad );
if _fdgb !=nil {_b .Log .Debug ("U\u006e\u0061\u0062\u006c\u0065\u0020t\u006f\u0020\u0061\u0064\u0064\u0020\u0065\u0078\u0074g\u0073\u0074\u0061t\u0065 \u0067\u0073\u0031");return nil ,nil ,_fdgb ;};_dbba ="\u0067\u0073\u0031";};_fdad ,_eafa ,_eeg ,_bbff :=_cgea (_eeag ,_dbba );
if _bbff !=nil {return nil ,nil ,_bbff ;};_bbff =_ddfd .SetContentStream (_fdad ,nil );if _bbff !=nil {return nil ,nil ,_bbff ;};_ddfd .BBox =_eafa .ToPdfObject ();_eegd :=_cg .MakeDict ();_eegd .Set ("\u004e",_ddfd .ToPdfObject ());return _eegd ,_eeg ,nil ;
};

// WrapContentStream ensures that the entire content stream for a `page` is wrapped within q ... Q operands.
// Ensures that following operands that are added are not affected by additional operands that are added.
// Implements interface model.ContentStreamWrapper.
func (_edebe ImageFieldAppearance )WrapContentStream (page *_fgd .PdfPage )error {_bfcc ,_cbfg :=page .GetAllContentStreams ();if _cbfg !=nil {return _cbfg ;};_bfdg :=_cd .NewContentStreamParser (_bfcc );_cda ,_cbfg :=_bfdg .Parse ();if _cbfg !=nil {return _cbfg ;
};_cda .WrapIfNeeded ();_bfge :=[]string {_cda .String ()};return page .SetContentStreams (_bfge ,_febf ());};const (_cff quadding =0;_gda quadding =1;_dg quadding =2;_cef float64 =2.0;);func _ggcb (_ffa LineAnnotationDef ,_egfge string )([]byte ,*_fgd .PdfRectangle ,*_fgd .PdfRectangle ,error ){_dfbc :=_ge .Line {X1 :0,Y1 :0,X2 :_ffa .X2 -_ffa .X1 ,Y2 :_ffa .Y2 -_ffa .Y1 ,LineColor :_ffa .LineColor ,Opacity :_ffa .Opacity ,LineWidth :_ffa .LineWidth ,LineEndingStyle1 :_ffa .LineEndingStyle1 ,LineEndingStyle2 :_ffa .LineEndingStyle2 };
_bfff ,_cdaa ,_dda :=_dfbc .Draw (_egfge );if _dda !=nil {return nil ,nil ,nil ,_dda ;};_gaab :=&_fgd .PdfRectangle {};_gaab .Llx =_ffa .X1 +_cdaa .Llx ;_gaab .Lly =_ffa .Y1 +_cdaa .Lly ;_gaab .Urx =_ffa .X1 +_cdaa .Urx ;_gaab .Ury =_ffa .Y1 +_cdaa .Ury ;
return _bfff ,_cdaa ,_gaab ,nil ;};

// CreateLineAnnotation creates a line annotation object that can be added to page PDF annotations.
func CreateLineAnnotation (lineDef LineAnnotationDef )(*_fgd .PdfAnnotation ,error ){_cegag :=_fgd .NewPdfAnnotationLine ();_cegag .L =_cg .MakeArrayFromFloats ([]float64 {lineDef .X1 ,lineDef .Y1 ,lineDef .X2 ,lineDef .Y2 });_ccce :=_cg .MakeName ("\u004e\u006f\u006e\u0065");
if lineDef .LineEndingStyle1 ==_ge .LineEndingStyleArrow {_ccce =_cg .MakeName ("C\u006c\u006f\u0073\u0065\u0064\u0041\u0072\u0072\u006f\u0077");};_fdg :=_cg .MakeName ("\u004e\u006f\u006e\u0065");if lineDef .LineEndingStyle2 ==_ge .LineEndingStyleArrow {_fdg =_cg .MakeName ("C\u006c\u006f\u0073\u0065\u0064\u0041\u0072\u0072\u006f\u0077");
};_cegag .LE =_cg .MakeArray (_ccce ,_fdg );if lineDef .Opacity < 1.0{_cegag .CA =_cg .MakeFloat (lineDef .Opacity );};_bbb ,_gcae ,_gcab :=lineDef .LineColor .R (),lineDef .LineColor .G (),lineDef .LineColor .B ();_cegag .IC =_cg .MakeArrayFromFloats ([]float64 {_bbb ,_gcae ,_gcab });
_cegag .C =_cg .MakeArrayFromFloats ([]float64 {_bbb ,_gcae ,_gcab });_eeef :=_fgd .NewBorderStyle ();_eeef .SetBorderWidth (lineDef .LineWidth );_cegag .BS =_eeef .ToPdfObject ();_fedee ,_cbfe ,_aceg :=_fefa (lineDef );if _aceg !=nil {return nil ,_aceg ;
};_cegag .AP =_fedee ;_cegag .Rect =_cg .MakeArrayFromFloats ([]float64 {_cbfe .Llx ,_cbfe .Lly ,_cbfe .Urx ,_cbfe .Ury });return _cegag .PdfAnnotation ,nil ;};

// NewCheckboxField generates a new checkbox field with partial name `name` at location `rect`
// on specified `page` and with field specific options `opt`.
func NewCheckboxField (page *_fgd .PdfPage ,name string ,rect []float64 ,opt CheckboxFieldOptions )(*_fgd .PdfFieldButton ,error ){if page ==nil {return nil ,_d .New ("\u0070a\u0067e\u0020\u006e\u006f\u0074\u0020s\u0070\u0065c\u0069\u0066\u0069\u0065\u0064");
};if len (name )<=0{return nil ,_d .New ("\u0072\u0065\u0071\u0075\u0069\u0072\u0065\u0064\u0020\u0061\u0074\u0074\u0072\u0069\u0062u\u0074e\u0020\u006e\u006f\u0074\u0020\u0073\u0070\u0065\u0063\u0069\u0066\u0069\u0065\u0064");};if len (rect )!=4{return nil ,_d .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0072\u0061\u006e\u0067\u0065");
};_bded ,_degg :=_fgd .NewStandard14Font (_fgd .ZapfDingbatsName );if _degg !=nil {return nil ,_degg ;};_gaaa :=_fgd .NewPdfField ();_dbdd :=&_fgd .PdfFieldButton {};_gaaa .SetContext (_dbdd );_dbdd .PdfField =_gaaa ;_dbdd .T =_cg .MakeString (name );_dbdd .SetType (_fgd .ButtonTypeCheckbox );
_bfc :="\u004f\u0066\u0066";if opt .Checked {_bfc ="\u0059\u0065\u0073";};_dbdd .V =_cg .MakeName (_bfc );_dcafb :=_fgd .NewPdfAnnotationWidget ();_dcafb .Rect =_cg .MakeArrayFromFloats (rect );_dcafb .P =page .ToPdfObject ();_dcafb .F =_cg .MakeInteger (4);
_dcafb .Parent =_dbdd .ToPdfObject ();_bec :=rect [2]-rect [0];_fcg :=rect [3]-rect [1];var _eeae _a .Buffer ;_eeae .WriteString ("\u0071\u000a");_eeae .WriteString ("\u0030 \u0030\u0020\u0031\u0020\u0072\u0067\n");_eeae .WriteString ("\u0042\u0054\u000a");
_eeae .WriteString ("\u002f\u005a\u0061D\u0062\u0020\u0031\u0032\u0020\u0054\u0066\u000a");_eeae .WriteString ("\u0045\u0054\u000a");_eeae .WriteString ("\u0051\u000a");_bcgef :=_cd .NewContentCreator ();_bcgef .Add_q ();_bcgef .Add_rg (0,0,1);_bcgef .Add_BT ();
_bcgef .Add_Tf (*_cg .MakeName ("\u005a\u0061\u0044\u0062"),12);_bcgef .Add_Td (0,0);_bcgef .Add_ET ();_bcgef .Add_Q ();_bac :=_fgd .NewXObjectForm ();_bac .SetContentStream (_bcgef .Bytes (),_cg .NewRawEncoder ());_bac .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_bec ,_fcg });
_bac .Resources =_fgd .NewPdfPageResources ();_bac .Resources .SetFontByName ("\u005a\u0061\u0044\u0062",_bded .ToPdfObject ());_bcgef =_cd .NewContentCreator ();_bcgef .Add_q ();_bcgef .Add_re (0,0,_bec ,_fcg );_bcgef .Add_W ().Add_n ();_bcgef .Add_rg (0,0,1);
_bcgef .Translate (0,3.0);_bcgef .Add_BT ();_bcgef .Add_Tf (*_cg .MakeName ("\u005a\u0061\u0044\u0062"),12);_bcgef .Add_Td (0,0);_bcgef .Add_Tj (*_cg .MakeString ("\u0034"));_bcgef .Add_ET ();_bcgef .Add_Q ();_fdf :=_fgd .NewXObjectForm ();_fdf .SetContentStream (_bcgef .Bytes (),_cg .NewRawEncoder ());
_fdf .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_bec ,_fcg });_fdf .Resources =_fgd .NewPdfPageResources ();_fdf .Resources .SetFontByName ("\u005a\u0061\u0044\u0062",_bded .ToPdfObject ());_ebbg :=_cg .MakeDict ();_ebbg .Set ("\u004f\u0066\u0066",_bac .ToPdfObject ());
_ebbg .Set ("\u0059\u0065\u0073",_fdf .ToPdfObject ());_cdef :=_cg .MakeDict ();_cdef .Set ("\u004e",_ebbg );_dcafb .AP =_cdef ;_dcafb .AS =_cg .MakeName (_bfc );_dbdd .Annotations =append (_dbdd .Annotations ,_dcafb );return _dbdd ,nil ;};

// AppearanceStyle defines style parameters for appearance stream generation.
type AppearanceStyle struct{

// How much of Rect height to fill when autosizing text.
AutoFontSizeFraction float64 ;

// CheckmarkRune is a rune used for check mark in checkboxes (for ZapfDingbats font).
CheckmarkRune rune ;BorderSize float64 ;BorderColor _fgd .PdfColor ;FillColor _fgd .PdfColor ;

// Multiplier for lineheight for multi line text.
MultilineLineHeight float64 ;MultilineVAlignMiddle bool ;

// Visual guide checking alignment of field contents (debugging).
DrawAlignmentReticle bool ;

// Allow field MK appearance characteristics to override style settings.
AllowMK bool ;

// Fonts holds appearance styles for fonts.
Fonts *AppearanceFontStyle ;

// MarginLeft represents the amount of space to leave on the left side of
// the form field bounding box when generating appearances (default: 2.0).
MarginLeft *float64 ;};

// FieldAppearance implements interface model.FieldAppearanceGenerator and generates appearance streams
// for fields taking into account what value is in the field. A common use case is for generating the
// appearance stream prior to flattening fields.
//
// If `OnlyIfMissing` is true, the field appearance is generated only for fields that do not have an
// appearance stream specified.
// If `RegenerateTextFields` is true, all text fields are regenerated (even if OnlyIfMissing is true).
type FieldAppearance struct{OnlyIfMissing bool ;RegenerateTextFields bool ;_dd *AppearanceStyle ;};func (_fgdc *AppearanceStyle )applyRotation (_gagg *_cg .PdfObjectDictionary ,_gfd ,_aabe float64 ,_baagg *_cd .ContentCreator )(float64 ,float64 ){if !_fgdc .AllowMK {return _gfd ,_aabe ;
};if _gagg ==nil {return _gfd ,_aabe ;};_affa ,_ :=_cg .GetNumberAsFloat (_gagg .Get ("\u0052"));if _affa ==0{return _gfd ,_aabe ;};_geea :=-_affa ;_adda :=_ge .Path {Points :[]_ge .Point {_ge .NewPoint (0,0).Rotate (_geea ),_ge .NewPoint (_gfd ,0).Rotate (_geea ),_ge .NewPoint (0,_aabe ).Rotate (_geea ),_ge .NewPoint (_gfd ,_aabe ).Rotate (_geea )}}.GetBoundingBox ();
_baagg .RotateDeg (_affa );_baagg .Translate (_adda .X ,_adda .Y );return _adda .Width ,_adda .Height ;};

// NewSignatureField returns a new signature field with a visible appearance
// containing the specified signature lines and styled according to the
// specified options.
func NewSignatureField (signature *_fgd .PdfSignature ,lines []*SignatureLine ,opts *SignatureFieldOpts )(*_fgd .PdfFieldSignature ,error ){if signature ==nil {return nil ,_d .New ("\u0073\u0069\u0067na\u0074\u0075\u0072\u0065\u0020\u0063\u0061\u006e\u006e\u006f\u0074\u0020\u0062\u0065\u0020\u006e\u0069\u006c");
};_gba ,_ccbd :=_ecfc (lines ,opts );if _ccbd !=nil {return nil ,_ccbd ;};_fgff :=_fgd .NewPdfFieldSignature (signature );_fgff .Rect =_cg .MakeArrayFromFloats (opts .Rect );_fgff .AP =_gba ;return _fgff ,nil ;};func _febf ()_cg .StreamEncoder {return _cg .NewFlateEncoder ()};
func _fbg (_dcaf _fg .Image ,_dfcf string ,_abcc *SignatureFieldOpts ,_ebff []float64 ,_afeg *_cd .ContentCreator )(*_cg .PdfObjectName ,*_fgd .XObjectImage ,error ){_eged ,_debfg :=_fgd .DefaultImageHandler {}.NewImageFromGoImage (_dcaf );if _debfg !=nil {return nil ,nil ,_debfg ;
};_aeab ,_debfg :=_fgd .NewXObjectImageFromImage (_eged ,nil ,_abcc .Encoder );if _debfg !=nil {return nil ,nil ,_debfg ;};_aadd ,_dade :=float64 (*_aeab .Width ),float64 (*_aeab .Height );_ecgc :=_ebff [2]-_ebff [0];_cega :=_ebff [3]-_ebff [1];if _abcc .AutoSize {_bdcf :=_f .Min (_ecgc /_aadd ,_cega /_dade );
_aadd *=_bdcf ;_dade *=_bdcf ;_ebff [0]=_ebff [0]+(_ecgc /2)-(_aadd /2);_ebff [1]=_ebff [1]+(_cega /2)-(_dade /2);};var _bcgg *_cg .PdfObjectName ;if _gegc ,_aacb :=_cg .GetName (_aeab .Name );_aacb {_bcgg =_gegc ;}else {_bcgg =_cg .MakeName (_dfcf );};
if _afeg !=nil {_afeg .Add_q ().Translate (_ebff [0],_ebff [1]).Scale (_aadd ,_dade ).Add_Do (*_bcgg ).Add_Q ();}else {return nil ,nil ,_d .New ("\u0043\u006f\u006e\u0074en\u0074\u0043\u0072\u0065\u0061\u0074\u006f\u0072\u0020\u0069\u0073\u0020\u006e\u0075l\u006c");
};return _bcgg ,_aeab ,nil ;};func _ecdg (_baad *_fgd .PdfField )string {if _baad ==nil {return "";};_aae ,_aaef :=_baad .GetContext ().(*_fgd .PdfFieldText );if !_aaef {return _ecdg (_baad .Parent );};if _aae .DA !=nil {return _aae .DA .Str ();};return _ecdg (_aae .Parent );
};func _de (_fedb *_fgd .PdfAnnotationWidget ,_gag *_fgd .PdfFieldText ,_gg *_fgd .PdfPageResources ,_bf AppearanceStyle )(*_cg .PdfObjectDictionary ,error ){_dae :=_fgd .NewPdfPageResources ();_aba ,_bff :=_cg .GetArray (_fedb .Rect );if !_bff {return nil ,_d .New ("\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0052\u0065\u0063\u0074");
};_cfb ,_cgg :=_fgd .NewPdfRectangle (*_aba );if _cgg !=nil {return nil ,_cgg ;};_ba ,_ced :=_cfb .Width (),_cfb .Height ();_gfa ,_abc :=_ba ,_ced ;_ccd ,_efb :=_cg .GetDict (_fedb .MK );if _efb {_cdd ,_ :=_cg .GetDict (_fedb .BS );_ceb :=_bf .applyAppearanceCharacteristics (_ccd ,_cdd ,nil );
if _ceb !=nil {return nil ,_ceb ;};};_bgd ,_cgg :=_cd .NewContentStreamParser (_ecdg (_gag .PdfField )).Parse ();if _cgg !=nil {return nil ,_cgg ;};_ec :=_cd .NewContentCreator ();if _bf .BorderSize > 0{_ffdc (_ec ,_bf ,_ba ,_ced );};if _bf .DrawAlignmentReticle {_afa :=_bf ;
_afa .BorderSize =0.2;_dcb (_ec ,_afa ,_ba ,_ced );};_ec .Add_BMC ("\u0054\u0078");_ec .Add_q ();_ba ,_ced =_bf .applyRotation (_ccd ,_ba ,_ced ,_ec );_ec .Add_BT ();_ad ,_feg ,_cgg :=_bf .processDA (_gag .PdfField ,_bgd ,_gg ,_dae ,_ec );if _cgg !=nil {return nil ,_cgg ;
};_ccf :=_ad .Font ;_fb :=_ad .Size ;_fc :=_cg .MakeName (_ad .Name );_fa :=_fb ==0;if _fa &&_feg {_fb =_ced *_bf .AutoFontSizeFraction ;};_fga :=_ccf .Encoder ();if _fga ==nil {_b .Log .Debug ("\u0057\u0041RN\u003a\u0020\u0066\u006f\u006e\u0074\u0020\u0065\u006e\u0063\u006f\u0064\u0065\u0072\u0020\u0069\u0073\u0020\u006e\u0069l\u002e\u0020\u0041\u0073s\u0075\u006d\u0069\u006eg \u0069\u0064e\u006et\u0069\u0074\u0079\u0020\u0065\u006ec\u006f\u0064\u0065r\u002e\u0020O\u0075\u0074\u0070\u0075\u0074\u0020\u006d\u0061\u0079\u0020\u0062\u0065\u0020\u0069n\u0063\u006f\u0072\u0072\u0065\u0063\u0074\u002e");
_fga =_c .NewIdentityTextEncoder ("\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079\u002d\u0048");};_cga ,_cgg :=_ccf .GetFontDescriptor ();if _cgg !=nil {_b .Log .Debug ("\u0045\u0072ro\u0072\u003a\u0020U\u006e\u0061\u0062\u006ce t\u006f g\u0065\u0074\u0020\u0066\u006f\u006e\u0074 d\u0065\u0073\u0063\u0072\u0069\u0070\u0074o\u0072");
};var _gee string ;if _dc ,_dab :=_cg .GetString (_gag .V );_dab {_gee =_dc .Decoded ();};if len (_gee )==0{return nil ,nil ;};_cad :=[]string {_gee };_ffdf :=false ;if _gag .Flags ().Has (_fgd .FieldFlagMultiline ){_ffdf =true ;_gee =_af .Replace (_gee ,"\u000d\u000a","\u000a",-1);
_gee =_af .Replace (_gee ,"\u000d","\u000a",-1);_cad =_af .Split (_gee ,"\u000a");};_fbc :=make ([]string ,len (_cad ));copy (_fbc ,_cad );_db :=_bf .MultilineLineHeight ;_cadc :=0.0;_gcf :=0;if _fga !=nil {for _fb >=0{_bdb :=make ([]string ,len (_cad ));
copy (_bdb ,_cad );_dag :=make ([]string ,len (_fbc ));copy (_dag ,_fbc );_cadc =0.0;_gcf =0;_efg :=len (_bdb );_gbc :=0;for _gbc < _efg {var _abf float64 ;_dagd :=-1;_eeb :=_cef ;if _bf .MarginLeft !=nil {_eeb =*_bf .MarginLeft ;};for _cbg ,_bbd :=range _bdb [_gbc ]{if _bbd ==' '{_dagd =_cbg ;
_abf =_eeb ;};_cec ,_gcg :=_ccf .GetRuneMetrics (_bbd );if !_gcg {_b .Log .Debug ("\u0046\u006f\u006e\u0074\u0020\u0064o\u0065\u0073\u0020\u006e\u006f\u0074\u0020\u0068\u0061\u0076\u0065\u0020\u0072\u0075\u006e\u0065\u0020\u006d\u0065\u0074r\u0069\u0063\u0073\u0020\u0066\u006f\u0072\u0020\u0025\u0076\u0020\u002d\u0020\u0073k\u0069p\u0070\u0069\u006e\u0067",_bbd );
continue ;};_eeb +=_cec .Wx ;if _ffdf &&!_fa &&_fb *_eeb /1000.0> _ba &&_dagd > 0{_aac :=_bdb [_gbc ][_dagd +1:];_bdg :=_dag [_gbc ][_dagd +1:];if _gbc < len (_bdb )-1{_bdb =append (_bdb [:_gbc +1],_bdb [_gbc :]...);_bdb [_gbc +1]=_aac ;_dag =append (_dag [:_gbc +1],_dag [_gbc :]...);
_dag [_gbc +1]=_bdg ;}else {_bdb =append (_bdb ,_aac );_dag =append (_dag ,_bdg );};_efg ++;_bdb [_gbc ]=_bdb [_gbc ][0:_dagd ];_dag [_gbc ]=_dag [_gbc ][0:_dagd ];_eeb =_abf ;break ;};};if _eeb > _cadc {_cadc =_eeb ;};_bdb [_gbc ]=string (_fga .Encode (_bdb [_gbc ]));
if len (_bdb [_gbc ])> 0{_gcf ++;};_gbc ++;};_gdaf :=_fb ;if _gcf > 1{_gdaf *=_db ;};_bbc :=float64 (_gcf )*_gdaf ;if _fa ||_bbc <=_ced {_cad =_bdb ;_fbc =_dag ;break ;};_fb --;};};_gbd :=_cef ;if _bf .MarginLeft !=nil {_gbd =*_bf .MarginLeft ;};if _fb ==0||_fa &&_cadc > 0&&_gbd +_cadc *_fb /1000.0> _ba {_fb =0.95*1000.0*(_ba -_gbd )/_cadc ;
};_fd :=_cff ;{if _edg ,_faa :=_cg .GetIntVal (_gag .Q );_faa {switch _edg {case 0:_fd =_cff ;case 1:_fd =_gda ;case 2:_fd =_dg ;default:_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0055\u006e\u0073\u0075\u0070\u0070\u006f\u0072t\u0065\u0064\u0020\u0071\u0075\u0061\u0064\u0064\u0069\u006e\u0067\u003a\u0020%\u0064\u0020\u002d\u0020\u0075\u0073\u0069\u006e\u0067\u0020\u006c\u0065ft\u0020\u0061\u006c\u0069\u0067\u006e\u006d\u0065\u006e\u0074",_edg );
};};};_dbe :=_fb ;if _ffdf &&_gcf > 1{_dbe =_db *_fb ;};var _bga float64 ;if _cga !=nil {_bga ,_cgg =_cga .GetCapHeight ();if _cgg !=nil {_b .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0055\u006e\u0061\u0062\u006c\u0065 \u0074\u006f\u0020\u0067\u0065\u0074 \u0066\u006f\u006e\u0074\u0020\u0043\u0061\u0070\u0048\u0065\u0069\u0067\u0068t\u003a\u0020\u0025\u0076",_cgg );
};};if int (_bga )<=0{_b .Log .Debug ("W\u0041\u0052\u004e\u003a\u0020\u0043\u0061\u0070\u0048e\u0069\u0067\u0068\u0074\u0020\u006e\u006ft \u0061\u0076\u0061\u0069l\u0061\u0062\u006c\u0065\u0020\u002d\u0020\u0073\u0065tt\u0069\u006eg\u0020\u0074\u006f\u0020\u0031\u0030\u0030\u0030");
_bga =1000;};_cea :=_bga /1000.0*_fb ;_fef :=0.0;{_geba :=float64 (_gcf )*_dbe ;if _fa &&_fef +_geba > _ced {_fb =0.95*(_ced -_fef )/float64 (_gcf );_dbe =_fb ;if _ffdf &&_gcf > 1{_dbe =_db *_fb ;};_cea =_bga /1000.0*_fb ;_geba =float64 (_gcf )*_dbe ;};
if _ced > _geba {if _ffdf {if _bf .MultilineVAlignMiddle {_ebb :=(_ced -(_geba +_cea ))/2.0;_fedf :=_ebb +_geba +_cea -_dbe ;_fef =_fedf ;if _gcf > 1{_fef =_fef +(_geba /_fb *float64 (_gcf ))-_dbe -_cea ;};if _fef < _geba {_fef =(_ced -_cea )/2.0;};}else {_fef =_ced -_dbe ;
if _fef > _fb {_fef -=_fb *0.5;};};}else {_fef =(_ced -_cea )/2.0;};};};_ec .Add_Tf (*_fc ,_fb );_ec .Add_Td (_gbd ,_fef );_adg :=_gbd ;_gbg :=_gbd ;for _fba ,_df :=range _cad {_fee :=0.0;for _ ,_deb :=range _fbc [_fba ]{_eg ,_beb :=_ccf .GetRuneMetrics (_deb );
if !_beb {continue ;};_fee +=_eg .Wx ;};_fag :=_fee /1000.0*_fb ;_ag :=_ba -_fag ;var _caa float64 ;switch _fd {case _cff :_caa =_adg ;case _gda :_caa =_ag /2;case _dg :_caa =_ag ;};_gbd =_caa -_gbg ;if _gbd > 0.0{_ec .Add_Td (_gbd ,0);};_gbg =_caa ;_ec .Add_Tj (*_cg .MakeString (_df ));
if _fba < len (_cad )-1{_ec .Add_Td (0,-_fb *_db );};};_ec .Add_ET ();_ec .Add_Q ();_ec .Add_EMC ();_cgge :=_fgd .NewXObjectForm ();_cgge .Resources =_dae ;_cgge .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_gfa ,_abc });_cgge .SetContentStream (_ec .Bytes (),_febf ());
_cba :=_cg .MakeDict ();_cba .Set ("\u004e",_cgge .ToPdfObject ());return _cba ,nil ;};func _bfebg (_aeaa *_fgd .PdfFieldButton ,_aded *_fgd .PdfAnnotationWidget ,_afee AppearanceStyle )(*_cg .PdfObjectDictionary ,error ){_fbgb ,_edcd :=_cg .GetArray (_aded .Rect );
if !_edcd {return nil ,_d .New ("\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0052\u0065\u0063\u0074");};_cecb ,_ebfb :=_fgd .NewPdfRectangle (*_fbgb );if _ebfb !=nil {return nil ,_ebfb ;};_gec ,_bgc :=_cecb .Width (),_cecb .Height ();_fdbb :=_cd .NewContentCreator ();
if _afee .BorderSize > 0{_ffdc (_fdbb ,_afee ,_gec ,_bgc );};if _afee .DrawAlignmentReticle {_afca :=_afee ;_afca .BorderSize =0.2;_dcb (_fdbb ,_afca ,_gec ,_bgc );};_degb :=_aeaa .GetFillImage ();_agd ,_ebfb :=_ggdd (_gec ,_bgc ,_degb ,_afee );if _ebfb !=nil {return nil ,_ebfb ;
};_adcd ,_gaca :=_cg .GetDict (_aded .MK );if _gaca {_adcd .Set ("\u006c",_agd .ToPdfObject ());};_gdfg :=_cg .MakeDict ();_gdfg .Set ("\u0046\u0052\u004d",_agd .ToPdfObject ());_ggf :=_fgd .NewPdfPageResources ();_ggf .ProcSet =_cg .MakeArray (_cg .MakeName ("\u0050\u0044\u0046"));
_ggf .XObject =_gdfg ;_dgc :=_gec -2;_edeb :=_bgc -2;_fdbb .Add_q ();_fdbb .Add_re (1,1,_dgc ,_edeb );_fdbb .Add_W ();_fdbb .Add_n ();_dgc -=2;_edeb -=2;_fdbb .Add_q ();_fdbb .Add_re (2,2,_dgc ,_edeb );_fdbb .Add_W ();_fdbb .Add_n ();_eff :=_f .Min (_dgc /float64 (_degb .Width ),_edeb /float64 (_degb .Height ));
_fdbb .Add_cm (_eff ,0,0,_eff ,(_gec /2)-(float64 (_degb .Width )*_eff /2)+2,2);_fdbb .Add_Do ("\u0046\u0052\u004d");_fdbb .Add_Q ();_fdbb .Add_Q ();_daf :=_fgd .NewXObjectForm ();_daf .FormType =_cg .MakeInteger (1);_daf .Resources =_ggf ;_daf .BBox =_cg .MakeArrayFromFloats ([]float64 {0,0,_gec ,_bgc });
_daf .Matrix =_cg .MakeArrayFromFloats ([]float64 {1.0,0.0,0.0,1.0,0.0,0.0});_daf .SetContentStream (_fdbb .Bytes (),_febf ());_gea :=_cg .MakeDict ();_gea .Set ("\u004e",_daf .ToPdfObject ());return _gea ,nil ;};func _fefa (_fbea LineAnnotationDef )(*_cg .PdfObjectDictionary ,*_fgd .PdfRectangle ,error ){_agdg :=_fgd .NewXObjectForm ();
_agdg .Resources =_fgd .NewPdfPageResources ();_eaeg :="";if _fbea .Opacity < 1.0{_efgf :=_cg .MakeDict ();_efgf .Set ("\u0063\u0061",_cg .MakeFloat (_fbea .Opacity ));_gagbe :=_agdg .Resources .AddExtGState ("\u0067\u0073\u0031",_efgf );if _gagbe !=nil {_b .Log .Debug ("U\u006e\u0061\u0062\u006c\u0065\u0020t\u006f\u0020\u0061\u0064\u0064\u0020\u0065\u0078\u0074g\u0073\u0074\u0061t\u0065 \u0067\u0073\u0031");
return nil ,nil ,_gagbe ;};_eaeg ="\u0067\u0073\u0031";};_cfdb ,_gbgc ,_bggf ,_fbae :=_ggcb (_fbea ,_eaeg );if _fbae !=nil {return nil ,nil ,_fbae ;};_fbae =_agdg .SetContentStream (_cfdb ,nil );if _fbae !=nil {return nil ,nil ,_fbae ;};_agdg .BBox =_gbgc .ToPdfObject ();
_fgc :=_cg .MakeDict ();_fgc .Set ("\u004e",_agdg .ToPdfObject ());return _fgc ,_bggf ,nil ;};

// CreateRectangleAnnotation creates a rectangle annotation object that can be added to page PDF annotations.
func CreateRectangleAnnotation (rectDef RectangleAnnotationDef )(*_fgd .PdfAnnotation ,error ){_cegab :=_fgd .NewPdfAnnotationSquare ();if rectDef .BorderEnabled {_aggb ,_adgc ,_gaeb :=rectDef .BorderColor .R (),rectDef .BorderColor .G (),rectDef .BorderColor .B ();
_cegab .C =_cg .MakeArrayFromFloats ([]float64 {_aggb ,_adgc ,_gaeb });_adee :=_fgd .NewBorderStyle ();_adee .SetBorderWidth (rectDef .BorderWidth );_cegab .BS =_adee .ToPdfObject ();};if rectDef .FillEnabled {_dfbd ,_ddeg ,_edeba :=rectDef .FillColor .R (),rectDef .FillColor .G (),rectDef .FillColor .B ();
_cegab .IC =_cg .MakeArrayFromFloats ([]float64 {_dfbd ,_ddeg ,_edeba });}else {_cegab .IC =_cg .MakeArrayFromIntegers ([]int {});};if rectDef .Opacity < 1.0{_cegab .CA =_cg .MakeFloat (rectDef .Opacity );};_gecc ,_faabd ,_aaca :=_afda (rectDef );if _aaca !=nil {return nil ,_aaca ;
};_cegab .AP =_gecc ;_cegab .Rect =_cg .MakeArrayFromFloats ([]float64 {_faabd .Llx ,_faabd .Lly ,_faabd .Urx ,_faabd .Ury });return _cegab .PdfAnnotation ,nil ;};

// SignatureFieldOpts represents a set of options used to configure
// an appearance widget dictionary.
type SignatureFieldOpts struct{

// Rect represents the area the signature annotation is displayed on.
Rect []float64 ;

// AutoSize specifies if the content of the appearance should be
// scaled to fit in the annotation rectangle.
AutoSize bool ;

// Font specifies the font of the text content.
Font *_fgd .PdfFont ;

// FontSize specifies the size of the text content.
FontSize float64 ;

// LineHeight specifies the height of a line of text in the appearance annotation.
LineHeight float64 ;

// TextColor represents the color of the text content displayed.
TextColor _fgd .PdfColor ;

// FillColor represents the background color of the appearance annotation area.
FillColor _fgd .PdfColor ;

// BorderSize represents border size of the appearance annotation area.
BorderSize float64 ;

// BorderColor represents the border color of the appearance annotation area.
BorderColor _fgd .PdfColor ;

// WatermarkImage specifies the image used as a watermark that will be rendered
// behind the signature.
WatermarkImage _fg .Image ;

// Image represents the image used for the signature appearance.
Image _fg .Image ;

// Encoder specifies the image encoder used for image signature. Defaults to flate encoder.
Encoder _cg .StreamEncoder ;

// ImagePosition specifies the image location relative to the text signature.
ImagePosition SignatureImagePosition ;};func _dcb (_dbfg *_cd .ContentCreator ,_bfe AppearanceStyle ,_fgf ,_ccea float64 ){_dbfg .Add_q ().Add_re (0,0,_fgf ,_ccea ).Add_re (0,_ccea /2,_fgf ,_ccea /2).Add_re (0,0,_fgf ,_ccea ).Add_re (_fgf /2,0,_fgf /2,_ccea ).Add_w (_bfe .BorderSize ).SetStrokingColor (_bfe .BorderColor ).SetNonStrokingColor (_bfe .FillColor ).Add_B ().Add_Q ();
};