api

package module
v1.0.1-dev Latest Latest
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 Go to latest Published: Jun 28, 2025 License: Apache-2.0 Imports: 42 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	ASCII85   = "ASCII85Decode"
	ASCIIHex  = "ASCIIHexDecode"
	RunLength = "RunLengthDecode"
	LZW       = "LZWDecode"
	Flate     = "FlateDecode"
	CCITTFax  = "CCITTFaxDecode"
	JBIG2     = "JBIG2Decode"
	DCT       = "DCTDecode"
	JPX       = "JPXDecode"
)

PDF defines the following filters. See also 7.4 in the PDF spec.

View Source 
const (
	PredictorNo      = 1  // No prediction.
	PredictorTIFF    = 2  // Use TIFF prediction for all rows.
	PredictorNone    = 10 // Use PNGNone for all rows.
	PredictorSub     = 11 // Use PNGSub for all rows.
	PredictorUp      = 12 // Use PNGUp for all rows.
	PredictorAverage = 13 // Use PNGAverage for all rows.
	PredictorPaeth   = 14 // Use PNGPaeth for all rows.
	PredictorOptimum = 15 // Use the optimum PNG prediction for each row.
)

PDF allows a prediction step prior to compression applying TIFF or PNG prediction. Predictor algorithm.

View Source 
const (
	PNGNone    = 0x00
	PNGSub     = 0x01
	PNGUp      = 0x02
	PNGAverage = 0x03
	PNGPaeth   = 0x04
)

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

View Source 
const (
	EolLF   = "\x0A"
	EolCR   = "\x0D"
	EolCRLF = "\x0D\x0A"
)

Supported line delimiters

View Source 
const (
	// ValidationStrict ensures 100% compliance with the spec (PDF 32000-1:2008).
	ValidationStrict int = iota

	// ValidationRelaxed ensures PDF compliance based on frequently encountered validation errors.
	ValidationRelaxed
)
View Source 
const (
	PermissionsNone  = PermissionFlags(0xF0C3)
	PermissionsPrint = PermissionsNone + PermissionPrintRev2 + PermissionPrintRev3
	PermissionsAll   = PermissionFlags(0xFFFF)
)
View Source 
const (
	Unknown = iota
	False   // aka invalid, not ok
	True    // aka  valid, ok
)
View Source 
const (
	CRL = iota
	OCSP
)

Preferred cert revocation checking mechanism values

View Source 
const (
	CertifiedSigPermNone = iota
	CertifiedSigPermNoChangesAllowed
	CertifiedSigPermFillingAndSigningOK
	CertifiedSigPermFillingAnnotatingAndSigningOK
)
View Source 
const (
	SigTypeForm = iota
	SigTypePage
	SigTypeUR
	SigTypeDTS
)
View Source 
const (

	// REQUIRED is used for required dict entries.
	REQUIRED = true

	// OPTIONAL is used for optional dict entries.
	OPTIONAL = false
)
View Source 
const (

	// ExcludePatternCS ...
	ExcludePatternCS = true

	// IncludePatternCS ...
	IncludePatternCS = false
)
View Source 
const (
	DeviceGrayCS = "DeviceGray"
	DeviceRGBCS  = "DeviceRGB"
	DeviceCMYKCS = "DeviceCMYK"
	CalGrayCS    = "CalGray"
	CalRGBCS     = "CalRGB"
	LabCS        = "Lab"
	ICCBasedCS   = "ICCBased"
	IndexedCS    = "Indexed"
	PatternCS    = "Pattern"
	SeparationCS = "Separation"
	DeviceNCS    = "DeviceN"
)

PDF defines the following Color Spaces:

View Source 
const (
	PageLastModified = iota
	PageResources
	PageMediaBox
	PageCropBox
	PageBleedBox
	PageTrimBox
	PageArtBox
	PageBoxColorInfo
	PageContents
	PageRotate
	PageGroup
	PageThumb
	PageB
	PageDur
	PageTrans
	PageAnnots
	PageAA
	PageMetadata
	PagePieceInfo
	PageStructParents
	PageID
	PagePZ
	PageSeparationInfo
	PageTabs
	PageTemplateInstantiated
	PagePresSteps
	PageUserUnit
	PageVP
)

The PDF page object fields.

View Source 
const (
	RootVersion = iota
	RootExtensions
	RootPageLabels
	RootNames
	RootDests
	RootViewerPrefs
	RootPageLayout
	RootPageMode
	RootOutlines
	RootThreads
	RootOpenAction
	RootAA
	RootURI
	RootAcroForm
	RootMetadata
	RootStructTreeRoot
	RootMarkInfo
	RootLang
	RootSpiderInfo
	RootOutputIntents
	RootPieceInfo
	RootOCProperties
	RootPerms
	RootLegal
	RootRequirements
	RootCollection
	RootNeedsRendering
)

The PDF root object fields.

View Source 
const FreeHeadGeneration = 65535

FreeHeadGeneration is the predefined generation number for the head of the free list.

View Source 
const (

	// ObjectStreamMaxObjects limits the number of objects within an object stream written.
	ObjectStreamMaxObjects = 100
)
View Source 
const SignTSFormat = "2006-01-02 15:04:05 -0700"
View Source 
const (

	// StatsFileNameDefault is the standard stats filename.
	StatsFileNameDefault = "stats.csv"
)

Variables

View Source 
var (
	Black     = SimpleColor{}
	White     = SimpleColor{R: 1, G: 1, B: 1}
	LightGray = SimpleColor{.9, .9, .9}
	Gray      = SimpleColor{.5, .5, .5}
	DarkGray  = SimpleColor{.3, .3, .3}
	Red       = SimpleColor{1, 0, 0}
	Green     = SimpleColor{0, 1, 0}
	Blue      = SimpleColor{0, 0, 1}
	Yellow    = SimpleColor{.5, .5, 0}
)

Some popular colors.

View Source 
var (
	ErrWrongPassword         = errors.New("pdfcpu: please provide the correct password")
	ErrCorruptHeader         = errors.New("pdfcpu: no header version available")
	ErrMissingXRefSection    = errors.New("pdfcpu: can't detect last xref section")
	ErrReferenceDoesNotExist = errors.New("pdfcpu: referenced object does not exist")
)
View Source 
var (
	UserFontMetrics     = map[string]TTFLight{}
	UserFontMetricsLock = &sync.RWMutex{}
)

UserFontMetrics represents font metrics for TTF or OTF font files installed into UserFontDir.

View Source 
var AnnotTypeStrings = map[AnnotationType]string{
	AnnText:           "Text",
	AnnLink:           "Link",
	AnnFreeText:       "FreeText",
	AnnLine:           "Line",
	AnnSquare:         "Square",
	AnnCircle:         "Circle",
	AnnPolygon:        "Polygon",
	AnnPolyLine:       "PolyLine",
	AnnHighLight:      "Highlight",
	AnnUnderline:      "Underline",
	AnnSquiggly:       "Squiggly",
	AnnStrikeOut:      "StrikeOut",
	AnnStamp:          "Stamp",
	AnnCaret:          "Caret",
	AnnInk:            "Ink",
	AnnPopup:          "Popup",
	AnnFileAttachment: "FileAttachment",
	AnnSound:          "Sound",
	AnnMovie:          "Movie",
	AnnWidget:         "Widget",
	AnnScreen:         "Screen",
	AnnPrinterMark:    "PrinterMark",
	AnnTrapNet:        "TrapNet",
	AnnWatermark:      "Watermark",
	Ann3D:             "3D",
	AnnRedact:         "Redact",
	AnnCustom:         "Custom",
}

AnnotTypeStrings manages string representations for annotation

View Source 
var AnnotTypes = map[string]AnnotationType{
	"Text":           AnnText,
	"Link":           AnnLink,
	"FreeText":       AnnFreeText,
	"Line":           AnnLine,
	"Square":         AnnSquare,
	"Circle":         AnnCircle,
	"Polygon":        AnnPolygon,
	"PolyLine":       AnnPolyLine,
	"Highlight":      AnnHighLight,
	"Underline":      AnnUnderline,
	"Squiggly":       AnnSquiggly,
	"StrikeOut":      AnnStrikeOut,
	"Stamp":          AnnStamp,
	"Caret":          AnnCaret,
	"Ink":            AnnInk,
	"Popup":          AnnPopup,
	"FileAttachment": AnnFileAttachment,
	"Sound":          AnnSound,
	"Movie":          AnnMovie,
	"Widget":         AnnWidget,
	"Screen":         AnnScreen,
	"PrinterMark":    AnnPrinterMark,
	"TrapNet":        AnnTrapNet,
	"Watermark":      AnnWatermark,
	"3D":             Ann3D,
	"Redact":         AnnRedact,
	"Custom":         AnnCustom,
}
View Source 
var Canceled = errors.New("context canceled")

Canceled is the error returned by [ContextContext.Err] when the context is canceled for some reason other than its deadline passing.

View Source 
var ConfigPath string = "default"

ConfigPath defines the location of pdfcpu's configuration directory. If set to a file path, pdfcpu will ensure the config dir at this location. Other possible values: 

default:	Ensure config dir at default location
disable:	Disable config dir usage

If you want to disable config dir usage in a multi threaded environment you are encouraged to use api.DisableConfigDir().

View Source 
var CoreFontMetrics = map[string]fontMetrics{
	"Courier-Bold": {
		NewRectangle(-113.0, -250.0, 749.0, 801.0),
		map[string]int{"space": 600, "exclam": 600, "quotedbl": 600, "numbersign": 600, "dollar": 600, "percent": 600, "ampersand": 600, "quoteright": 600, "parenleft": 600, "parenright": 600, "asterisk": 600, "plus": 600, "comma": 600, "hyphen": 600, "period": 600, "slash": 600, "zero": 600, "one": 600, "two": 600, "three": 600, "four": 600, "five": 600, "six": 600, "seven": 600, "eight": 600, "nine": 600, "colon": 600, "semicolon": 600, "less": 600, "equal": 600, "greater": 600, "question": 600, "at": 600, "A": 600, "B": 600, "C": 600, "D": 600, "E": 600, "F": 600, "G": 600, "H": 600, "I": 600, "J": 600, "K": 600, "L": 600, "M": 600, "N": 600, "O": 600, "P": 600, "Q": 600, "R": 600, "S": 600, "T": 600, "U": 600, "V": 600, "W": 600, "X": 600, "Y": 600, "Z": 600, "bracketleft": 600, "backslash": 600, "bracketright": 600, "asciicircum": 600, "underscore": 600, "quoteleft": 600, "a": 600, "b": 600, "c": 600, "d": 600, "e": 600, "f": 600, "g": 600, "h": 600, "i": 600, "j": 600, "k": 600, "l": 600, "m": 600, "n": 600, "o": 600, "p": 600, "q": 600, "r": 600, "s": 600, "t": 600, "u": 600, "v": 600, "w": 600, "x": 600, "y": 600, "z": 600, "braceleft": 600, "bar": 600, "braceright": 600, "asciitilde": 600, "exclamdown": 600, "cent": 600, "sterling": 600, "fraction": 600, "yen": 600, "florin": 600, "section": 600, "currency": 600, "quotesingle": 600, "quotedblleft": 600, "guillemotleft": 600, "guilsinglleft": 600, "guilsinglright": 600, "fi": 600, "fl": 600, "endash": 600, "dagger": 600, "daggerdbl": 600, "periodcentered": 600, "paragraph": 600, "bullet": 600, "quotesinglbase": 600, "quotedblbase": 600, "quotedblright": 600, "guillemotright": 600, "ellipsis": 600, "perthousand": 600, "questiondown": 600, "grave": 600, "acute": 600, "circumflex": 600, "tilde": 600, "macron": 600, "breve": 600, "dotaccent": 600, "dieresis": 600, "ring": 600, "cedilla": 600, "hungarumlaut": 600, "ogonek": 600, "caron": 600, "emdash": 600, "AE": 600, "ordfeminine": 600, "Lslash": 600, "Oslash": 600, "OE": 600, "ordmasculine": 600, "ae": 600, "dotlessi": 600, "lslash": 600, "oslash": 600, "oe": 600, "germandbls": 600, "Idieresis": 600, "eacute": 600, "abreve": 600, "uhungarumlaut": 600, "ecaron": 600, "Ydieresis": 600, "divide": 600, "Yacute": 600, "Acircumflex": 600, "aacute": 600, "Ucircumflex": 600, "yacute": 600, "scommaaccent": 600, "ecircumflex": 600, "Uring": 600, "Udieresis": 600, "aogonek": 600, "Uacute": 600, "uogonek": 600, "Edieresis": 600, "Dcroat": 600, "commaaccent": 600, "copyright": 600, "Emacron": 600, "ccaron": 600, "aring": 600, "Ncommaaccent": 600, "lacute": 600, "agrave": 600, "Tcommaaccent": 600, "Cacute": 600, "atilde": 600, "Edotaccent": 600, "scaron": 600, "scedilla": 600, "iacute": 600, "lozenge": 600, "Rcaron": 600, "Gcommaaccent": 600, "ucircumflex": 600, "acircumflex": 600, "Amacron": 600, "rcaron": 600, "ccedilla": 600, "Zdotaccent": 600, "Thorn": 600, "Omacron": 600, "Racute": 600, "Sacute": 600, "dcaron": 600, "Umacron": 600, "uring": 600, "threesuperior": 600, "Ograve": 600, "Agrave": 600, "Abreve": 600, "multiply": 600, "uacute": 600, "Tcaron": 600, "partialdiff": 600, "ydieresis": 600, "Nacute": 600, "icircumflex": 600, "Ecircumflex": 600, "adieresis": 600, "edieresis": 600, "cacute": 600, "nacute": 600, "umacron": 600, "Ncaron": 600, "Iacute": 600, "plusminus": 600, "brokenbar": 600, "registered": 600, "Gbreve": 600, "Idotaccent": 600, "summation": 600, "Egrave": 600, "racute": 600, "omacron": 600, "Zacute": 600, "Zcaron": 600, "greaterequal": 600, "Eth": 600, "Ccedilla": 600, "lcommaaccent": 600, "tcaron": 600, "eogonek": 600, "Uogonek": 600, "Aacute": 600, "Adieresis": 600, "egrave": 600, "zacute": 600, "iogonek": 600, "Oacute": 600, "oacute": 600, "amacron": 600, "sacute": 600, "idieresis": 600, "Ocircumflex": 600, "Ugrave": 600, "Delta": 600, "thorn": 600, "twosuperior": 600, "Odieresis": 600, "mu": 600, "igrave": 600, "ohungarumlaut": 600, "Eogonek": 600, "dcroat": 600, "threequarters": 600, "Scedilla": 600, "lcaron": 600, "Kcommaaccent": 600, "Lacute": 600, "trademark": 600, "edotaccent": 600, "Igrave": 600, "Imacron": 600, "Lcaron": 600, "onehalf": 600, "lessequal": 600, "ocircumflex": 600, "ntilde": 600, "Uhungarumlaut": 600, "Eacute": 600, "emacron": 600, "gbreve": 600, "onequarter": 600, "Scaron": 600, "Scommaaccent": 600, "Ohungarumlaut": 600, "degree": 600, "ograve": 600, "Ccaron": 600, "ugrave": 600, "radical": 600, "Dcaron": 600, "rcommaaccent": 600, "Ntilde": 600, "otilde": 600, "Rcommaaccent": 600, "Lcommaaccent": 600, "Atilde": 600, "Aogonek": 600, "Aring": 600, "Otilde": 600, "zdotaccent": 600, "Ecaron": 600, "Iogonek": 600, "kcommaaccent": 600, "minus": 600, "Icircumflex": 600, "ncaron": 600, "tcommaaccent": 600, "logicalnot": 600, "odieresis": 600, "udieresis": 600, "notequal": 600, "gcommaaccent": 600, "eth": 600, "zcaron": 600, "ncommaaccent": 600, "onesuperior": 600, "imacron": 600, "Euro": 600},
	},
	"Courier-BoldOblique": {
		NewRectangle(-57.0, -250.0, 869.0, 801.0),
		map[string]int{"space": 600, "exclam": 600, "quotedbl": 600, "numbersign": 600, "dollar": 600, "percent": 600, "ampersand": 600, "quoteright": 600, "parenleft": 600, "parenright": 600, "asterisk": 600, "plus": 600, "comma": 600, "hyphen": 600, "period": 600, "slash": 600, "zero": 600, "one": 600, "two": 600, "three": 600, "four": 600, "five": 600, "six": 600, "seven": 600, "eight": 600, "nine": 600, "colon": 600, "semicolon": 600, "less": 600, "equal": 600, "greater": 600, "question": 600, "at": 600, "A": 600, "B": 600, "C": 600, "D": 600, "E": 600, "F": 600, "G": 600, "H": 600, "I": 600, "J": 600, "K": 600, "L": 600, "M": 600, "N": 600, "O": 600, "P": 600, "Q": 600, "R": 600, "S": 600, "T": 600, "U": 600, "V": 600, "W": 600, "X": 600, "Y": 600, "Z": 600, "bracketleft": 600, "backslash": 600, "bracketright": 600, "asciicircum": 600, "underscore": 600, "quoteleft": 600, "a": 600, "b": 600, "c": 600, "d": 600, "e": 600, "f": 600, "g": 600, "h": 600, "i": 600, "j": 600, "k": 600, "l": 600, "m": 600, "n": 600, "o": 600, "p": 600, "q": 600, "r": 600, "s": 600, "t": 600, "u": 600, "v": 600, "w": 600, "x": 600, "y": 600, "z": 600, "braceleft": 600, "bar": 600, "braceright": 600, "asciitilde": 600, "exclamdown": 600, "cent": 600, "sterling": 600, "fraction": 600, "yen": 600, "florin": 600, "section": 600, "currency": 600, "quotesingle": 600, "quotedblleft": 600, "guillemotleft": 600, "guilsinglleft": 600, "guilsinglright": 600, "fi": 600, "fl": 600, "endash": 600, "dagger": 600, "daggerdbl": 600, "periodcentered": 600, "paragraph": 600, "bullet": 600, "quotesinglbase": 600, "quotedblbase": 600, "quotedblright": 600, "guillemotright": 600, "ellipsis": 600, "perthousand": 600, "questiondown": 600, "grave": 600, "acute": 600, "circumflex": 600, "tilde": 600, "macron": 600, "breve": 600, "dotaccent": 600, "dieresis": 600, "ring": 600, "cedilla": 600, "hungarumlaut": 600, "ogonek": 600, "caron": 600, "emdash": 600, "AE": 600, "ordfeminine": 600, "Lslash": 600, "Oslash": 600, "OE": 600, "ordmasculine": 600, "ae": 600, "dotlessi": 600, "lslash": 600, "oslash": 600, "oe": 600, "germandbls": 600, "Idieresis": 600, "eacute": 600, "abreve": 600, "uhungarumlaut": 600, "ecaron": 600, "Ydieresis": 600, "divide": 600, "Yacute": 600, "Acircumflex": 600, "aacute": 600, "Ucircumflex": 600, "yacute": 600, "scommaaccent": 600, "ecircumflex": 600, "Uring": 600, "Udieresis": 600, "aogonek": 600, "Uacute": 600, "uogonek": 600, "Edieresis": 600, "Dcroat": 600, "commaaccent": 600, "copyright": 600, "Emacron": 600, "ccaron": 600, "aring": 600, "Ncommaaccent": 600, "lacute": 600, "agrave": 600, "Tcommaaccent": 600, "Cacute": 600, "atilde": 600, "Edotaccent": 600, "scaron": 600, "scedilla": 600, "iacute": 600, "lozenge": 600, "Rcaron": 600, "Gcommaaccent": 600, "ucircumflex": 600, "acircumflex": 600, "Amacron": 600, "rcaron": 600, "ccedilla": 600, "Zdotaccent": 600, "Thorn": 600, "Omacron": 600, "Racute": 600, "Sacute": 600, "dcaron": 600, "Umacron": 600, "uring": 600, "threesuperior": 600, "Ograve": 600, "Agrave": 600, "Abreve": 600, "multiply": 600, "uacute": 600, "Tcaron": 600, "partialdiff": 600, "ydieresis": 600, "Nacute": 600, "icircumflex": 600, "Ecircumflex": 600, "adieresis": 600, "edieresis": 600, "cacute": 600, "nacute": 600, "umacron": 600, "Ncaron": 600, "Iacute": 600, "plusminus": 600, "brokenbar": 600, "registered": 600, "Gbreve": 600, "Idotaccent": 600, "summation": 600, "Egrave": 600, "racute": 600, "omacron": 600, "Zacute": 600, "Zcaron": 600, "greaterequal": 600, "Eth": 600, "Ccedilla": 600, "lcommaaccent": 600, "tcaron": 600, "eogonek": 600, "Uogonek": 600, "Aacute": 600, "Adieresis": 600, "egrave": 600, "zacute": 600, "iogonek": 600, "Oacute": 600, "oacute": 600, "amacron": 600, "sacute": 600, "idieresis": 600, "Ocircumflex": 600, "Ugrave": 600, "Delta": 600, "thorn": 600, "twosuperior": 600, "Odieresis": 600, "mu": 600, "igrave": 600, "ohungarumlaut": 600, "Eogonek": 600, "dcroat": 600, "threequarters": 600, "Scedilla": 600, "lcaron": 600, "Kcommaaccent": 600, "Lacute": 600, "trademark": 600, "edotaccent": 600, "Igrave": 600, "Imacron": 600, "Lcaron": 600, "onehalf": 600, "lessequal": 600, "ocircumflex": 600, "ntilde": 600, "Uhungarumlaut": 600, "Eacute": 600, "emacron": 600, "gbreve": 600, "onequarter": 600, "Scaron": 600, "Scommaaccent": 600, "Ohungarumlaut": 600, "degree": 600, "ograve": 600, "Ccaron": 600, "ugrave": 600, "radical": 600, "Dcaron": 600, "rcommaaccent": 600, "Ntilde": 600, "otilde": 600, "Rcommaaccent": 600, "Lcommaaccent": 600, "Atilde": 600, "Aogonek": 600, "Aring": 600, "Otilde": 600, "zdotaccent": 600, "Ecaron": 600, "Iogonek": 600, "kcommaaccent": 600, "minus": 600, "Icircumflex": 600, "ncaron": 600, "tcommaaccent": 600, "logicalnot": 600, "odieresis": 600, "udieresis": 600, "notequal": 600, "gcommaaccent": 600, "eth": 600, "zcaron": 600, "ncommaaccent": 600, "onesuperior": 600, "imacron": 600, "Euro": 600},
	},
	"Courier-Oblique": {
		NewRectangle(-27.0, -250.0, 849.0, 805.0),
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	"Times-Roman": {
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		map[string]int{"space": 250, "exclam": 333, "quotedbl": 408, "numbersign": 500, "dollar": 500, "percent": 833, "ampersand": 778, "quoteright": 333, "parenleft": 333, "parenright": 333, "asterisk": 500, "plus": 564, "comma": 250, "hyphen": 333, "period": 250, "slash": 278, "zero": 500, "one": 500, "two": 500, "three": 500, "four": 500, "five": 500, "six": 500, "seven": 500, "eight": 500, "nine": 500, "colon": 278, "semicolon": 278, "less": 564, "equal": 564, "greater": 564, "question": 444, "at": 921, "A": 722, "B": 667, "C": 667, "D": 722, "E": 611, "F": 556, "G": 722, "H": 722, "I": 333, "J": 389, "K": 722, "L": 611, "M": 889, "N": 722, "O": 722, "P": 556, "Q": 722, "R": 667, "S": 556, "T": 611, "U": 722, "V": 722, "W": 944, "X": 722, "Y": 722, "Z": 611, "bracketleft": 333, "backslash": 278, "bracketright": 333, "asciicircum": 469, "underscore": 500, "quoteleft": 333, "a": 444, "b": 500, "c": 444, "d": 500, "e": 444, "f": 333, "g": 500, "h": 500, "i": 278, "j": 278, "k": 500, "l": 278, "m": 778, "n": 500, "o": 500, "p": 500, "q": 500, "r": 333, "s": 389, "t": 278, "u": 500, "v": 500, "w": 722, "x": 500, "y": 500, "z": 444, "braceleft": 480, "bar": 200, "braceright": 480, "asciitilde": 541, "exclamdown": 333, "cent": 500, "sterling": 500, "fraction": 167, "yen": 500, "florin": 500, "section": 500, "currency": 500, "quotesingle": 180, "quotedblleft": 444, "guillemotleft": 500, "guilsinglleft": 333, "guilsinglright": 333, "fi": 556, "fl": 556, "endash": 500, "dagger": 500, "daggerdbl": 500, "periodcentered": 250, "paragraph": 453, "bullet": 350, "quotesinglbase": 333, "quotedblbase": 444, "quotedblright": 444, "guillemotright": 500, "ellipsis": 1000, "perthousand": 1000, "questiondown": 444, "grave": 333, "acute": 333, "circumflex": 333, "tilde": 333, "macron": 333, "breve": 333, "dotaccent": 333, "dieresis": 333, "ring": 333, "cedilla": 333, "hungarumlaut": 333, "ogonek": 333, "caron": 333, "emdash": 1000, "AE": 889, "ordfeminine": 276, "Lslash": 611, "Oslash": 722, "OE": 889, "ordmasculine": 310, "ae": 667, "dotlessi": 278, "lslash": 278, "oslash": 500, "oe": 722, "germandbls": 500, "Idieresis": 333, "eacute": 444, "abreve": 444, "uhungarumlaut": 500, "ecaron": 444, "Ydieresis": 722, "divide": 564, "Yacute": 722, "Acircumflex": 722, "aacute": 444, "Ucircumflex": 722, "yacute": 500, "scommaaccent": 389, "ecircumflex": 444, "Uring": 722, "Udieresis": 722, "aogonek": 444, "Uacute": 722, "uogonek": 500, "Edieresis": 611, "Dcroat": 722, "commaaccent": 250, "copyright": 760, "Emacron": 611, "ccaron": 444, "aring": 444, "Ncommaaccent": 722, "lacute": 278, "agrave": 444, "Tcommaaccent": 611, "Cacute": 667, "atilde": 444, "Edotaccent": 611, "scaron": 389, "scedilla": 389, "iacute": 278, "lozenge": 471, "Rcaron": 667, "Gcommaaccent": 722, "ucircumflex": 500, "acircumflex": 444, "Amacron": 722, "rcaron": 333, "ccedilla": 444, "Zdotaccent": 611, "Thorn": 556, "Omacron": 722, "Racute": 667, "Sacute": 556, "dcaron": 588, "Umacron": 722, "uring": 500, "threesuperior": 300, "Ograve": 722, "Agrave": 722, "Abreve": 722, "multiply": 564, "uacute": 500, "Tcaron": 611, "partialdiff": 476, "ydieresis": 500, "Nacute": 722, "icircumflex": 278, "Ecircumflex": 611, "adieresis": 444, "edieresis": 444, "cacute": 444, "nacute": 500, "umacron": 500, "Ncaron": 722, "Iacute": 333, "plusminus": 564, "brokenbar": 200, "registered": 760, "Gbreve": 722, "Idotaccent": 333, "summation": 600, "Egrave": 611, "racute": 333, "omacron": 500, "Zacute": 611, "Zcaron": 611, "greaterequal": 549, "Eth": 722, "Ccedilla": 667, "lcommaaccent": 278, "tcaron": 326, "eogonek": 444, "Uogonek": 722, "Aacute": 722, "Adieresis": 722, "egrave": 444, "zacute": 444, "iogonek": 278, "Oacute": 722, "oacute": 500, "amacron": 444, "sacute": 389, "idieresis": 278, "Ocircumflex": 722, "Ugrave": 722, "Delta": 612, "thorn": 500, "twosuperior": 300, "Odieresis": 722, "mu": 500, "igrave": 278, "ohungarumlaut": 500, "Eogonek": 611, "dcroat": 500, "threequarters": 750, "Scedilla": 556, "lcaron": 344, "Kcommaaccent": 722, "Lacute": 611, "trademark": 980, "edotaccent": 444, "Igrave": 333, "Imacron": 333, "Lcaron": 611, "onehalf": 750, "lessequal": 549, "ocircumflex": 500, "ntilde": 500, "Uhungarumlaut": 722, "Eacute": 611, "emacron": 444, "gbreve": 500, "onequarter": 750, "Scaron": 556, "Scommaaccent": 556, "Ohungarumlaut": 722, "degree": 400, "ograve": 500, "Ccaron": 667, "ugrave": 500, "radical": 453, "Dcaron": 722, "rcommaaccent": 333, "Ntilde": 722, "otilde": 500, "Rcommaaccent": 667, "Lcommaaccent": 611, "Atilde": 722, "Aogonek": 722, "Aring": 722, "Otilde": 722, "zdotaccent": 444, "Ecaron": 611, "Iogonek": 333, "kcommaaccent": 500, "minus": 564, "Icircumflex": 333, "ncaron": 500, "tcommaaccent": 278, "logicalnot": 564, "odieresis": 500, "udieresis": 500, "notequal": 549, "gcommaaccent": 500, "eth": 500, "zcaron": 444, "ncommaaccent": 500, "onesuperior": 300, "imacron": 278, "Euro": 500},
	},
	"ZapfDingbats": {
		NewRectangle(-1.0, -143.0, 981.0, 820.0),
		map[string]int{"space": 278, "a1": 974, "a2": 961, "a202": 974, "a3": 980, "a4": 719, "a5": 789, "a119": 790, "a118": 791, "a117": 690, "a11": 960, "a12": 939, "a13": 549, "a14": 855, "a15": 911, "a16": 933, "a105": 911, "a17": 945, "a18": 974, "a19": 755, "a20": 846, "a21": 762, "a22": 761, "a23": 571, "a24": 677, "a25": 763, "a26": 760, "a27": 759, "a28": 754, "a6": 494, "a7": 552, "a8": 537, "a9": 577, "a10": 692, "a29": 786, "a30": 788, "a31": 788, "a32": 790, "a33": 793, "a34": 794, "a35": 816, "a36": 823, "a37": 789, "a38": 841, "a39": 823, "a40": 833, "a41": 816, "a42": 831, "a43": 923, "a44": 744, "a45": 723, "a46": 749, "a47": 790, "a48": 792, "a49": 695, "a50": 776, "a51": 768, "a52": 792, "a53": 759, "a54": 707, "a55": 708, "a56": 682, "a57": 701, "a58": 826, "a59": 815, "a60": 789, "a61": 789, "a62": 707, "a63": 687, "a64": 696, "a65": 689, "a66": 786, "a67": 787, "a68": 713, "a69": 791, "a70": 785, "a71": 791, "a72": 873, "a73": 761, "a74": 762, "a203": 762, "a75": 759, "a204": 759, "a76": 892, "a77": 892, "a78": 788, "a79": 784, "a81": 438, "a82": 138, "a83": 277, "a84": 415, "a97": 392, "a98": 392, "a99": 668, "a100": 668, "a89": 390, "a90": 390, "a93": 317, "a94": 317, "a91": 276, "a92": 276, "a205": 509, "a85": 509, "a206": 410, "a86": 410, "a87": 234, "a88": 234, "a95": 334, "a96": 334, "a101": 732, "a102": 544, "a103": 544, "a104": 910, "a106": 667, "a107": 760, "a108": 760, "a112": 776, "a111": 595, "a110": 694, "a109": 626, "a120": 788, "a121": 788, "a122": 788, "a123": 788, "a124": 788, "a125": 788, "a126": 788, "a127": 788, "a128": 788, "a129": 788, "a130": 788, "a131": 788, "a132": 788, "a133": 788, "a134": 788, "a135": 788, "a136": 788, "a137": 788, "a138": 788, "a139": 788, "a140": 788, "a141": 788, "a142": 788, "a143": 788, "a144": 788, "a145": 788, "a146": 788, "a147": 788, "a148": 788, "a149": 788, "a150": 788, "a151": 788, "a152": 788, "a153": 788, "a154": 788, "a155": 788, "a156": 788, "a157": 788, "a158": 788, "a159": 788, "a160": 894, "a161": 838, "a163": 1016, "a164": 458, "a196": 748, "a165": 924, "a192": 748, "a166": 918, "a167": 927, "a168": 928, "a169": 928, "a170": 834, "a171": 873, "a172": 828, "a173": 924, "a162": 924, "a174": 917, "a175": 930, "a176": 931, "a177": 463, "a178": 883, "a179": 836, "a193": 836, "a180": 867, "a199": 867, "a181": 696, "a200": 696, "a182": 874, "a201": 874, "a183": 760, "a184": 946, "a197": 771, "a185": 865, "a194": 771, "a198": 888, "a186": 967, "a195": 888, "a187": 831, "a188": 873, "a189": 927, "a190": 970, "a191": 918},
	},
}

CoreFontMetrics represents font metrics for the Adobe standard type 1 core fonts.

View Source 
var DeadlineExceeded error = deadlineExceededError{}

DeadlineExceeded is the error returned by [ContextContext.Err] when the context is canceled due to its deadline passing.

View Source 
var DestinationTypeStrings = map[DestinationType]string{
	DestXYZ:   "XYZ",
	DestFit:   "Fit",
	DestFitH:  "FitH",
	DestFitV:  "FitV",
	DestFitR:  "FitR",
	DestFitB:  "FitB",
	DestFitBH: "FitBH",
	DestFitBV: "FitBV",
}

DestinationTypeStrings manages string representations for destination

View Source 
var ErrBookmarksRepair = errors.New("pdfcpu: bookmarks repair failed")
View Source 
var (
	ErrCorruptFontDict = errors.New("pdfcpu: corrupt fontDict")
)
View Source 
var ErrInvalidColor = errors.New("pdfcpu: invalid color constant")
View Source 
var ErrInvalidUTF16BE = errors.New("pdfcpu: invalid UTF-16BE detected")

ErrInvalidUTF16BE represents an error that gets raised for invalid UTF-16BE byte sequences.

View Source 
var ErrNoContent = errors.New("pdfcpu: page without content")
View Source 
var ErrUnknownEncryption = errors.New("pdfcpu: unknown encryption")
View Source 
var ErrUnsupportedFilter = errors.New("pdfcpu: filter not supported")

ErrUnsupportedFilter signals unsupported filter encountered.

View Source 
var PaperSize = map[string]*Dim{}/* 150 elements not displayed */

PaperSize is a map of known paper sizes in user units (=72 dpi pixels).

View Source 
var SignatureReasonStrings = map[SignatureReason]string{
	SignatureReasonUnknown:               "no reason",
	SignatureReasonDocNotModified:        "document has not been modified",
	SignatureReasonDocModified:           "document has been modified",
	SignatureReasonSignatureForged:       "signer's signature is not authentic",
	SignatureReasonTimestampTokenInvalid: "timestamp token is invalid",
	SignatureReasonCertInvalid:           "signer's certificate is invalid",
	SignatureReasonCertNotTrusted:        "signer's certificate chain is not in the trusted list of Root CAs",
	SignatureReasonCertExpired:           "signer's certificate or one of its parent certificates has expired",
	SignatureReasonCertRevoked:           "signer's certificate or one of its parent certificates has been revoked",
	SignatureReasonInternal:              "internal error",
	SignatureReasonSelfSignedCertErr:     "signer's self signed certificate is not trusted",
}

SignatureReasonStrings manages string representations for signature reasons.

View Source 
var SignatureStatusStrings = map[SignatureStatus]string{
	SignatureStatusUnknown: "validity of the signature is unknown",
	SignatureStatusValid:   "signature is valid",
	SignatureStatusInvalid: "signature is invalid",
}

SignatureStatusStrings manages string representations for signature statuses.

View Source 
var UserFontDir string

UserFontDir is the location for installed TTF or OTF font files.

View Source 
var VersionStr = "v0.11.0 dev"

VersionStr is the current pdfcpu version.

Functions

func AfterFunc 

func AfterFunc(ctx ContextContext, f func()) (stop func() bool)

AfterFunc arranges to call f in its own goroutine after ctx is canceled. If ctx is already canceled, AfterFunc calls f immediately in its own goroutine.

Multiple calls to AfterFunc on a context operate independently; one does not replace another.

Calling the returned stop function stops the association of ctx with f. It returns true if the call stopped f from being run. If stop returns false, either the context is canceled and f has been started in its own goroutine; or f was already stopped. The stop function does not wait for f to complete before returning. If the caller needs to know whether f is completed, it must coordinate with f explicitly.

If ctx has a "AfterFunc(func()) func() bool" method, AfterFunc will use it to schedule the call.

func AnchorPosition 

func AnchorPosition(a Anchor, r *Rectangle, w, h float64) (x float64, y float64)

func BestFitRectIntoRect 

func BestFitRectIntoRect(rSrc, rDest *Rectangle, enforceOrient, scaleUp bool) (w, h, dx, dy, rot float64)

func ByteForOctalString 

func ByteForOctalString(octalBytes string) (b byte)

Convert a 1,2 or 3 digit unescaped octal string into the corresponding byte value.

func CJK 

func CJK(script, lang string) bool

CJK returns true if script and lang imply a CJK

func CJKEncoding 

func CJKEncoding(s string) bool

CJKEncodings returns true for supported encodings.

func CP1252ToUTF8 

func CP1252ToUTF8(s string) string

CP1252ToUTF8 converts CP1252 to UTF-8. Unused

func CSVSafeString 

func CSVSafeString(s string) string

func Cause 

func Cause(c ContextContext) error

Cause returns a non-nil error explaining why c was canceled. The first cancellation of c or one of its parents sets the cause. If that cancellation happened via a call to CancelCauseFunc(err), then Cause returns err. Otherwise Cause(c) returns the same value as c.Err(). Cause returns nil if c has not been canceled yet.

func CheckConfigVersion 

func CheckConfigVersion(v string)

CheckConfigVersion prints a warning if the configuration is outdated.

func CoreWriteContext 

func CoreWriteContext(ctx *Context) (err error)

WriteContext generates a PDF file for the cross reference table contained in Context.

func DateString 

func DateString(t time.Time) string

DateString returns a string representation of t.

func DateTime 

func DateTime(s string, relaxed bool) (time.Time, bool)

DateTime decodes s into a time.Time.

func DecodeName 

func DecodeName(s string) (string, error)

DecodeName applies name decoding according to PDF spec.

func DecodeUTF16String 

func DecodeUTF16String(s string) (string, error)

DecodeUTF16String decodes a UTF16BE string from a hex string.

func DetectKeywords 

func DetectKeywords(line string) (endInd int, streamInd int, err error)

func DetectKeywordsWithContext 

func DetectKeywordsWithContext(c ContextContext, line string) (endInd int, streamInd int, err error)

func Embedded 

func Embedded(xRefTable *XRefTable, fontDict Dict, objNr int) (bool, error)

func EncodeName 

func EncodeName(s string) string

EncodeName applies name encoding according to PDF spec.

func EncodeUTF16String 

func EncodeUTF16String(s string) string

func EqualFontDicts 

func EqualFontDicts(fd1, fd2 Dict, xRefTable *XRefTable) (bool, error)

EqualFontDicts returns true, if two font dicts are equal.

func EqualObjects 

func EqualObjects(o1, o2 Object, xRefTable *XRefTable) (ok bool, err error)

EqualObjects returns true if two objects are equal in the context of given xrefTable. Some object and an indirect reference to it are treated as equal. Objects may in fact be object trees.

func EqualSlices 

func EqualSlices(a, b []string) bool

func EqualStreamDicts 

func EqualStreamDicts(sd1, sd2 *StreamDict, xRefTable *XRefTable) (bool, error)

EqualStreamDicts returns true if two stream dicts are equal and contain the same bytes.

func Escape 

func Escape(s string) (*string, error)

Escape applies all defined escape sequences to s.

func EscapedUTF16String 

func EscapedUTF16String(s string) (*string, error)

func FreeTextIntentName 

func FreeTextIntentName(fti FreeTextIntent) string

func HexLiteralToString 

func HexLiteralToString(hl HexLiteral) (string, error)

HexLiteralToString returns a possibly UTF16 encoded string for a hex string.

func IndRefMemberOf 

func IndRefMemberOf(i IndirectRef, arr Array) bool

IntMemberOf returns true if list contains i.

func IntMemberOf 

func IntMemberOf(i int, list []int) bool

IntMemberOf returns true if list contains i.

func IsCoreFont 

func IsCoreFont(fontName string) bool

IsCoreFont returns true for the 14 PDF standard Type 1 fonts.

func IsStringUTF16BE 

func IsStringUTF16BE(s string) bool

IsStringUTF16BE checks a string for Big Endian byte order BOM.

func IsUTF16BE 

func IsUTF16BE(b []byte) bool

IsUTF16BE checks for Big Endian byte order mark and valid length.

func Lang 

func Lang(xRefTable *XRefTable, fontDict Dict) (string, error)

Lang detects the optional language indicator in a font dict.

func LineEndingStyleName 

func LineEndingStyleName(les LineEndingStyle) string

func LineIntentName 

func LineIntentName(li LineIntent) string

func Lines 

func Lines(data []byte, atEOF bool) (advance int, token []byte, err error)

Lines is a split function for a Scanner that returns each line of text, stripped of any trailing end-of-line marker. The returned line may be empty. The end-of-line marker is one carriage return followed by one newline or one carriage return or one newline. The last non-empty line of input will be returned even if it has no newline.

func List 

func List() []string

List return the list of all supported PDF filters.

func MemberOf 

func MemberOf(s string, list []string) bool

MemberOf returns true if list contains s.

func ModelRemoveKeywords 

func ModelRemoveKeywords(metadata *[]byte) error

func Name 

func Name(xRefTable *XRefTable, fontDict Dict, objNumber int) (prefix, fontName string, err error)

Name evaluates the font name for a given font dict.

func NormalizeCoord 

func NormalizeCoord(x, y float64, r *Rectangle, origin Corner, absolute bool) (float64, float64)

NormalizeCoord transfers P(x,y) from pdfcpu user space into PDF user space, which uses a coordinate system with origin in the lower left corner of r.

pdfcpu user space coordinate systems have the origin in one of four corners of r:

LowerLeft corner (default = PDF user space) 

x extends to the right,
y extends upward

LowerRight corner: 

x extends to the left,
y extends upward

UpperLeft corner: 

x extends to the right,
y extends downward

UpperRight corner: 

x extends to the left,
y extends downward

func NormalizeOffset 

func NormalizeOffset(x, y float64, origin Corner) (float64, float64)

Normalize offset transfers x and y into offsets in the PDF user space.

func Optimize 

func Optimize(input []byte, conf *Configuration) ([]byte, error)

Optimize optimizes a PDF represented as a byte slice and returns the optimized byte slice.

func OptimizeContext 

func OptimizeContext(ctx *Context) error

OptimizeContext optimizes ctx.

func OptimizeXRefTable 

func OptimizeXRefTable(ctx *Context) error

OptimizeXRefTable optimizes an xRefTable by locating and getting rid of redundant embedded fonts and images.

func ParseObjectAttributes 

func ParseObjectAttributes(line *string) (objectNumber *int, generationNumber *int, err error)

ParseObjectAttributes parses object number and generation of the next object for given string buffer.

func Permissions 

func Permissions(ctx *Context) (list []string)

Permissions returns a list of set permissions.

func PermissionsList 

func PermissionsList(p int) (list []string)

PermissionsList returns a list of set permissions.

func PolyLineIntentName 

func PolyLineIntentName(pi PolyLineIntent) string

func PolygonIntentName 

func PolygonIntentName(pi PolygonIntent) string

func ProcessRefCounts 

func ProcessRefCounts(xRefTable *XRefTable, o Object)

func RTL 

func RTL(lang string) bool

RTL returns true if lang implies a right-to-left script.

func ReadFont 

func ReadFont(fileName string) ([]byte, error)

Read reads in the font file bytes from gob Note: For WASM compatibility, this function is disabled. Font operations are not supported in WASM mode.

func RemoveControlChars 

func RemoveControlChars(s string) string

func Reverse 

func Reverse(s string) string

Reverse reverses the runes within s.

func ScriptForEncoding 

func ScriptForEncoding(enc string) string

func StringLiteralToString 

func StringLiteralToString(sl StringLiteral) (string, error)

StringLiteralToString returns the best possible string rep for a string literal.

func StringOrHexLiteral 

func StringOrHexLiteral(obj Object) (*string, error)

func Subset 

func Subset(fontName string, usedGIDs map[uint16]bool) ([]byte, error)

Subset creates a new font file based on usedGIDs.

func SupportedScript 

func SupportedScript(s string) bool

func SupportsDecodeParms 

func SupportsDecodeParms(f string) bool

func Text 

func Text(o Object) (string, error)

Text returns a string based representation for String and Hexliterals.

func ToUserSpace 

func ToUserSpace(f float64, unit DisplayUnit) float64

func UTF8ToCP1252 

func UTF8ToCP1252(s string) string

UTF8ToCP1252 converts UTF-8 to CP1252. Unused

func Unescape 

func Unescape(s string) ([]byte, error)

Unescape resolves all escape sequences of s.

func UpdateUserfont 

func UpdateUserfont(xRefTable *XRefTable, fontName string, f FontResource) error

UpdateUserfont updates the fontdict for fontName via supplied font resource.

func ValidateContext 

func ValidateContext(ctx *Context) error

ValidateContext validates ctx.

func WithCancel 

func WithCancel(parent ContextContext) (ctx ContextContext, cancel CancelFunc)

WithCancel returns a derived context that points to the parent context but has a new Done channel. The returned context's Done channel is closed when the returned cancel function is called or when the parent context's Done channel is closed, whichever happens first.

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this ContextContext complete.

func WithCancelCause 

func WithCancelCause(parent ContextContext) (ctx ContextContext, cancel CancelCauseFunc)

WithCancelCause behaves like WithCancel but returns a CancelCauseFunc instead of a CancelFunc. Calling cancel with a non-nil error (the "cause") records that error in ctx; it can then be retrieved using Cause(ctx). Calling cancel with nil sets the cause to Canceled.

Example use: 

ctx, cancel := context.WithCancelCause(parent)
cancel(myError)
ctx.Err() // returns context.Canceled
context.Cause(ctx) // returns myError

func WithDeadline 

func WithDeadline(parent ContextContext, d time.Time) (ContextContext, CancelFunc)

WithDeadline returns a derived context that points to the parent context but has the deadline adjusted to be no later than d. If the parent's deadline is already earlier than d, WithDeadline(parent, d) is semantically equivalent to parent. The returned [ContextContext.Done] channel is closed when the deadline expires, when the returned cancel function is called, or when the parent context's Done channel is closed, whichever happens first.

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this ContextContext complete.

func WithDeadlineCause 

func WithDeadlineCause(parent ContextContext, d time.Time, cause error) (ContextContext, CancelFunc)

WithDeadlineCause behaves like WithDeadline but also sets the cause of the returned ContextContext when the deadline is exceeded. The returned CancelFunc does not set the cause.

func WithTimeout 

func WithTimeout(parent ContextContext, timeout time.Duration) (ContextContext, CancelFunc)

WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).

Canceling this context releases resources associated with it, so code should call cancel as soon as the operations running in this ContextContext complete: 

func slowOperationWithTimeout(ctx context.ContextContext) (Result, error) {
	ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
	defer cancel()  // releases resources if slowOperation completes before timeout elapses
	return slowOperation(ctx)
}

func WithTimeoutCause 

func WithTimeoutCause(parent ContextContext, timeout time.Duration, cause error) (ContextContext, CancelFunc)

WithTimeoutCause behaves like WithTimeout but also sets the cause of the returned ContextContext when the timeout expires. The returned CancelFunc does not set the cause.

func WriteContextF 

func WriteContextF(ctx *Context, w io.Writer) error

func XRefTableValidation 

func XRefTableValidation(ctx *Context) error

XRefTable validates a PDF cross reference table obeying the validation mode.

Types

type Alt 

type Alt struct {
	// XMLName xml.Name `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Alt"`
	Entries []string `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# li"`
}

type Anchor 

type Anchor int

Anchor represents symbolic positions within a rectangular region. 

const (
	TopLeft Anchor = iota
	TopCenter
	TopRight
	Left
	Center // default
	Right
	BottomLeft
	BottomCenter
	BottomRight
	Full // special case, no anchor needed, imageSize = pageSize
)

These are the defined anchors for relative positioning.

func ParseAnchor 

func ParseAnchor(s string) (Anchor, error)

func ParsePositionAnchor 

func ParsePositionAnchor(s string) (Anchor, error)

func (Anchor) String 

func (a Anchor) String() string

type Annot 

type Annot struct {
	IndRefs *[]IndirectRef
	Map     AnnotMap
}

type AnnotMap 

type AnnotMap map[int]AnnotationRenderer

AnnotMap represents annotations by object number of the corresponding annotation dict.

type AnnotationFlags 

type AnnotationFlags int

AnnotationFlags represents the PDF annotation flags. 

const (
	AnnInvisible AnnotationFlags = 1 << iota
	AnnHidden
	AnnPrint
	AnnNoZoom
	AnnNoRotate
	AnnNoView
	AnnReadOnly
	AnnLocked
	AnnToggleNoView
	AnnLockedContents
)

type AnnotationInterface 

type AnnotationInterface struct {
	SubType          AnnotationType  // The type of annotation that this dictionary describes.
	CustomSubType    string          // Out of spec annot type.
	Rect             Rectangle       // The annotation rectangle, defining the location of the annotation on the page in default user space units.
	APObjNr          int             // The objNr of the appearance stream dict.
	Contents         string          // Text that shall be displayed for the annotation.
	NM               string          // (Since V1.4) The annotation name, a text string uniquely identifying it among all the annotations on its page.
	ModificationDate string          // M - The date and time when the annotation was most recently modified.
	P                *IndirectRef    // An indirect reference to the page object with which this annotation is associated.
	F                AnnotationFlags // A set of flags specifying various characteristics of the annotation.
	C                *SimpleColor    // The background color of the annotation’s icon when closed, pop up title bar color, link ann border
	BorderRadX       float64         // Border radius X
	BorderRadY       float64         // Border radius Y
	BorderWidth      float64         // Border width
	Hash             uint32
}

AnnotationInterface represents a PDF annotation.

func NewAnnotation 

func NewAnnotation(
	typ AnnotationType,
	customTyp string,
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
) AnnotationInterface

NewAnnotation returns a new annotation.

func NewAnnotationForRawType 

func NewAnnotationForRawType(
	typ string,
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,

	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
) AnnotationInterface

NewAnnotationForRawType returns a new annotation of a specific type.

func (AnnotationInterface) APObjNrInt 

func (ann AnnotationInterface) APObjNrInt() int

func (AnnotationInterface) ContentString 

func (ann AnnotationInterface) ContentString() string

ContentString returns a string representation of ann's contents.

func (AnnotationInterface) CustomTypeString 

func (ann AnnotationInterface) CustomTypeString() string

ContentString returns a string representation of ann's contents.

func (AnnotationInterface) HashString 

func (ann AnnotationInterface) HashString() uint32

HashString returns the annotation hash.

func (AnnotationInterface) ID 

func (ann AnnotationInterface) ID() string

ID returns the annotation id.

func (AnnotationInterface) RectString 

func (ann AnnotationInterface) RectString() string

RectString returns ann's positioning rectangle.

func (AnnotationInterface) RenderDict 

func (ann AnnotationInterface) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

func (AnnotationInterface) Type 

func (ann AnnotationInterface) Type() AnnotationType

Type returns ann's type.

func (AnnotationInterface) TypeString 

func (ann AnnotationInterface) TypeString() string

TypeString returns a string representation of ann's type.

type AnnotationRenderer 

type AnnotationRenderer interface {
	RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)
	Type() AnnotationType
	RectString() string
	APObjNrInt() int
	ID() string
	ContentString() string
	CustomTypeString() string
}

AnnotationRenderer is the interface for PDF annotations.

func Annotation 

func Annotation(xRefTable *XRefTable, d Dict) (AnnotationRenderer, error)

Annotation returns an annotation renderer. Validation sets up a cache of annotation renderers.

type AnnotationType 

type AnnotationType int

AnnotationType represents the various PDF annotation 

const (
	AnnText AnnotationType = iota
	AnnLink
	AnnFreeText
	AnnLine
	AnnSquare
	AnnCircle
	AnnPolygon
	AnnPolyLine
	AnnHighLight
	AnnUnderline
	AnnSquiggly
	AnnStrikeOut
	AnnStamp
	AnnCaret
	AnnInk
	AnnPopup
	AnnFileAttachment
	AnnSound
	AnnMovie
	AnnWidget
	AnnScreen
	AnnPrinterMark
	AnnTrapNet
	AnnWatermark
	Ann3D
	AnnRedact
	AnnCustom
)

type Array 

type Array []Object

Array represents a PDF array object.

func NewHexLiteralArray 

func NewHexLiteralArray(sVars ...string) Array

NewHexLiteralArray returns a PDFArray with HexLiteralLiteral entries.

func NewIntegerArray 

func NewIntegerArray(fVars ...int) Array

NewIntegerArray returns a PDFArray with Integer entries.

func NewNameArray 

func NewNameArray(sVars ...string) Array

NewNameArray returns a PDFArray with Name entries.

func NewNumberArray 

func NewNumberArray(fVars ...float64) Array

NewNumberArray returns a PDFArray with Float entries.

func NewStringLiteralArray 

func NewStringLiteralArray(sVars ...string) Array

NewStringLiteralArray returns a PDFArray with StringLiteral entries.

func (Array) Clone 

func (a Array) Clone() Object

Clone returns a clone of a.

func (Array) PDFString 

func (a Array) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (Array) String 

func (a Array) String() string

type Boolean 

type Boolean bool

Boolean represents a PDF boolean object.

func (Boolean) Clone 

func (boolean Boolean) Clone() Object

Clone returns a clone of boolean.

func (Boolean) PDFString 

func (boolean Boolean) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (Boolean) String 

func (boolean Boolean) String() string

func (Boolean) Value 

func (boolean Boolean) Value() bool

Value returns a bool value for this PDF object.

type BorderStyle 

type BorderStyle int

BorderStyle (see table 168) 

const (
	BSSolid BorderStyle = iota
	BSDashed
	BSBeveled
	BSInset
	BSUnderline
)

type Box 

type Box struct {
	Rect      *Rectangle `json:"rect"` // Rectangle in user space.
	Inherited bool       `json:"-"`    // Media box and Crop box may be inherited.
	RefBox    string     `json:"-"`    // Use position of another box,
	// Margins to parent box in points.
	// Relative to parent box if 0 < x < 0.5
	MLeft, MRight float64 `json:"-"`
	MTop, MBot    float64 `json:"-"`
	// Relative position within parent box
	Dim    *Dim   `json:"-"` // dimensions
	Pos    Anchor `json:"-"` // position anchor within parent box, one of tl,tc,tr,l,c,r,bl,bc,br.
	Dx, Dy int    `json:"-"` // anchor offset
}

func ParseBox 

func ParseBox(s string, u DisplayUnit) (*Box, error)

ParseBox parses a box definition.

type ByteSize 

type ByteSize float64

ByteSize represents the various terms for storage space. 

const (
	KB ByteSize = 1 << (10 * iota)
	MB
	GB
)

Storage space terms.

func (ByteSize) String 

func (b ByteSize) String() string

type CancelCauseFunc 

type CancelCauseFunc func(cause error)

A CancelCauseFunc behaves like a CancelFunc but additionally sets the cancellation cause. This cause can be retrieved by calling Cause on the canceled ContextContext or on any of its derived Contexts.

If the context has already been canceled, CancelCauseFunc does not set the cause. For example, if childContext is derived from parentContext:

  • if parentContext is canceled with cause1 before childContext is canceled with cause2, then Cause(parentContext) == Cause(childContext) == cause1
  • if childContext is canceled with cause2 before parentContext is canceled with cause1, then Cause(parentContext) == cause1 and Cause(childContext) == cause2

type CancelFunc 

type CancelFunc func()

A CancelFunc tells an operation to abandon its work. A CancelFunc does not wait for the work to stop. A CancelFunc may be called by multiple goroutines simultaneously. After the first call, subsequent calls to a CancelFunc do nothing.

type CaretAnnotation 

type CaretAnnotation struct {
	MarkupAnnotation
	RD        *Rectangle // A set of four numbers that shall describe the numerical differences between two rectangles: the Rect entry of the annotation and the actual boundaries of the underlying caret.
	Paragraph bool       // A new paragraph symbol (¶) shall be associated with the caret.
}

func NewCaretAnnotation 

func NewCaretAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	rd *Rectangle,
	paragraph bool,
) CaretAnnotation

func (CaretAnnotation) RenderDict 

func (ann CaretAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

type CertificateDetails 

type CertificateDetails struct {
	Leaf              bool
	SelfSigned        bool
	Subject           string
	Issuer            string
	SerialNumber      string
	ValidFrom         time.Time
	ValidThru         time.Time
	Expired           bool
	Qualified         bool
	CA                bool
	Usage             string
	Version           int
	SignAlg           string
	KeySize           int
	Revocation        RevocationDetails
	Trust             TrustDetails
	IssuerCertificate *CertificateDetails
}

func (CertificateDetails) String 

func (cd CertificateDetails) String() string

type CircleAnnotation 

type CircleAnnotation struct {
	MarkupAnnotation
	FillCol               *SimpleColor
	Margins               Array
	BorderWidth           float64
	BorderStyle           BorderStyle
	CloudyBorder          bool
	CloudyBorderIntensity int // 0,1,2
}

CircleAnnotation represents a square annotation.

func NewCircleAnnotation 

func NewCircleAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	fillCol *SimpleColor,
	MLeft, MTop, MRight, MBot float64,
	borderWidth float64,
	borderStyle BorderStyle,
	cloudyBorder bool,
	cloudyBorderIntensity int,
) CircleAnnotation

NewCircleAnnotation returns a new circle annotation.

func (CircleAnnotation) RenderDict 

func (ann CircleAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a page annotation dict.

type CommandMode 

type CommandMode int

CommandMode specifies the operation being executed. 

const (
	VALIDATE CommandMode = iota
	LISTINFO
	OPTIMIZE
	SPLIT
	SPLITBYPAGENR
	MERGECREATE
	MERGECREATEZIP
	MERGEAPPEND
	EXTRACTIMAGES
	EXTRACTFONTS
	EXTRACTPAGES
	EXTRACTCONTENT
	EXTRACTMETADATA
	TRIM
	LISTATTACHMENTS
	EXTRACTATTACHMENTS
	ADDATTACHMENTS
	ADDATTACHMENTSPORTFOLIO
	REMOVEATTACHMENTS
	LISTPERMISSIONS
	SETPERMISSIONS
	ADDWATERMARKS
	REMOVEWATERMARKS
	IMPORTIMAGES
	INSERTPAGESBEFORE
	INSERTPAGESAFTER
	REMOVEPAGES
	LISTKEYWORDS
	ADDKEYWORDS
	REMOVEKEYWORDS
	LISTPROPERTIES
	ADDPROPERTIES
	REMOVEPROPERTIES
	COLLECT
	CROP
	LISTBOXES
	ADDBOXES
	REMOVEBOXES
	LISTANNOTATIONS
	ADDANNOTATIONS
	REMOVEANNOTATIONS
	ROTATE
	NUP
	BOOKLET
	LISTBOOKMARKS
	ADDBOOKMARKS
	REMOVEBOOKMARKS
	IMPORTBOOKMARKS
	EXPORTBOOKMARKS
	LISTIMAGES
	UPDATEIMAGES
	CREATE
	DUMP
	LISTFORMFIELDS
	REMOVEFORMFIELDS
	LOCKFORMFIELDS
	UNLOCKFORMFIELDS
	RESETFORMFIELDS
	EXPORTFORMFIELDS
	FILLFORMFIELDS
	MULTIFILLFORMFIELDS
	ENCRYPT
	DECRYPT
	CHANGEUPW
	CHANGEOPW
	CHEATSHEETSFONTS
	INSTALLFONTS
	LISTFONTS
	RESIZE
	POSTER
	NDOWN
	CUT
	LISTPAGELAYOUT
	SETPAGELAYOUT
	RESETPAGELAYOUT
	LISTPAGEMODE
	SETPAGEMODE
	RESETPAGEMODE
	LISTVIEWERPREFERENCES
	SETVIEWERPREFERENCES
	RESETVIEWERPREFERENCES
	ZOOM
	ADDSIGNATURE
	VALIDATESIGNATURE
	LISTCERTIFICATES
	INSPECTCERTIFICATES
	IMPORTCERTIFICATES
	VALIDATESIGNATURES
)

The available commands.

type Configuration 

type Configuration struct {
	// Location of corresponding config.yml
	Path string

	CreationDate string

	Version string

	// Check filename extensions.
	CheckFileNameExt bool

	// Enables PDF V1.5 compatible processing of object streams, xref streams, hybrid PDF files.
	Reader15 bool

	// Enables decoding of all streams (fontfiles, images..) for logging purposes.
	DecodeAllStreams bool

	// Validate against ISO-32000: strict or relaxed.
	ValidationMode int

	// Enable validation right before writing.
	PostProcessValidate bool

	// Check for broken links in LinkedAnnotations/URIActions.
	ValidateLinks bool

	// End of line char sequence for writing.
	Eol string

	// Turns on object stream generation.
	// A signal for compressing any new non-stream-object into an object stream.
	// true enforces WriteXRefStream to true.
	// false does not prevent xRefStream generation.
	WriteObjectStream bool

	// Switches between xRefSection (<=V1.4) and objectStream/xRefStream (>=V1.5) writing.
	WriteXRefStream bool

	// Turns on stats collection.
	// TODO Decision - unused.
	CollectStats bool

	// A CSV-filename holding the statistics.
	StatsFileName string

	// Supplied user password.
	UserPW    string
	UserPWNew *string

	// Supplied owner password.
	OwnerPW    string
	OwnerPWNew *string

	// EncryptUsingAES ensures AES encryption.
	// true: AES encryption
	// false: RC4 encryption.
	EncryptUsingAES bool

	// AES:40,128,256 RC4:40,128
	EncryptKeyLength int

	// Supplied user access permissions, see Table 22.
	Permissions PermissionFlags // int16

	// Command being executed.
	Cmd CommandMode

	// Display unit in effect.
	Unit DisplayUnit

	// Timestamp format.
	TimestampFormat string

	// Date format.
	DateFormat string

	// Optimize after reading and validating the xreftable but before processing.
	Optimize bool

	// Optimize after processing but before writing.
	// TODO add to config.yml
	OptimizeBeforeWriting bool

	// Optimize page resources via content stream analysis. (assuming Optimize == true || OptimizeBeforeWriting == true)
	OptimizeResourceDicts bool

	// Optimize duplicate content streams across pages. (assuming Optimize == true || OptimizeBeforeWriting == true)
	OptimizeDuplicateContentStreams bool

	// Merge creates bookmarks.
	CreateBookmarks bool

	// PDF Viewer is expected to supply appearance streams for form fields.
	NeedAppearances bool

	// Internet availability.
	Offline bool

	// HTTP timeout in seconds.
	Timeout int

	// Http timeout in seconds for CRL revocation checking.
	TimeoutCRL int

	// Http timeout in seconds for OCSP revocation checking.
	TimeoutOCSP int

	// Preferred certificate revocation checking mechanism: CRL, OSCP
	PreferredCertRevocationChecker int
}

Configuration of a ContextContext.

func NewAESConfiguration 

func NewAESConfiguration(userPW, ownerPW string, keyLength int) *Configuration

NewAESConfiguration returns a default configuration for AES encryption.

func NewDefaultConfiguration 

func NewDefaultConfiguration() *Configuration

NewDefaultConfiguration returns the default pdfcpu configuration.

func NewRC4Configuration 

func NewRC4Configuration(userPW, ownerPW string, keyLength int) *Configuration

NewRC4Configuration returns a default configuration for RC4 encryption.

func (*Configuration) ApplyReducedFeatureSet 

func (c *Configuration) ApplyReducedFeatureSet() bool

ApplyReducedFeatureSet returns true if complex entries like annotations shall not be written.

func (*Configuration) EolString 

func (c *Configuration) EolString() string

EolString returns a string rep for the eol in effect.

func (*Configuration) PreferredCertRevocationCheckerString 

func (c *Configuration) PreferredCertRevocationCheckerString() string

PreferredCertRevocationCheckerString returns a string rep for the preferred certificate revocation checker in effect.

func (*Configuration) SetUnit 

func (c *Configuration) SetUnit(s string)

SetUnit configures the display unit.

func (*Configuration) UnitString 

func (c *Configuration) UnitString() string

UnitString returns a string rep for the display unit in effect.

func (*Configuration) ValidationModeString 

func (c *Configuration) ValidationModeString() string

ValidationModeString returns a string rep for the validation mode in effect.

type Context 

type Context struct {
	*Configuration
	*XRefTable
	Read         *ReadContextType
	Optimize     *OptimizationContext
	Write        *WriteContext
	WritingPages bool // true, when writing page dicts.
	Dest         bool // true when writing a destination within a page.
}

func NewContext 

func NewContext(rs io.ReadSeeker, conf *Configuration) (*Context, error)

NewContext initializes a new Context.

func Read 

func Read(rs io.ReadSeeker, conf *Configuration) (*Context, error)

func ReadAndValidate 

func ReadAndValidate(rs io.ReadSeeker, conf *Configuration) (ctx *Context, err error)

ReadAndValidate returns a Context of rs ready for processing.

func ReadContext 

func ReadContext(rs io.ReadSeeker, conf *Configuration) (*Context, error)

ReadContext uses an io.ReadSeeker to build an internal structure holding its cross reference table aka the ContextContext.

func ReadValidateAndOptimize 

func ReadValidateAndOptimize(rs io.ReadSeeker, conf *Configuration) (ctx *Context, err error)

func ReadWithContext 

func ReadWithContext(c ContextContext, rs io.ReadSeeker, conf *Configuration) (*Context, error)

Read takes a readSeeker and generates a PDF model context, an in-memory representation containing a cross reference table. If the passed Go context is cancelled, reading will be interrupted.

func (*Context) AddPageBoundaries 

func (ctx *Context) AddPageBoundaries(selectedPages IntSet, pb *PageBoundaries) error

AddPageBoundaries adds page boundaries specified by pb for selected pages.

func (*Context) Crop 

func (ctx *Context) Crop(selectedPages IntSet, b *Box) error

Crop sets crop box for selected pages to b.

func (*Context) ListPageBoundaries 

func (ctx *Context) ListPageBoundaries(selectedPages IntSet, wantPB *PageBoundaries) ([]string, error)

ListPageBoundaries lists page boundaries specified in wantPB for selected pages.

func (*Context) RemovePageBoundaries 

func (ctx *Context) RemovePageBoundaries(selectedPages IntSet, pb *PageBoundaries) error

RemovePageBoundaries removes page boundaries specified by pb for selected pages. The media box is mandatory (inherited or not) and can't be removed. A removed crop box defaults to the media box. Removed trim/bleed/art boxes default to the crop box.

type ContextContext 

type ContextContext interface {
	// Deadline returns the time when work done on behalf of this context
	// should be canceled. Deadline returns ok==false when no deadline is
	// set. Successive calls to Deadline return the same results.
	Deadline() (deadline time.Time, ok bool)

	// Done returns a channel that's closed when work done on behalf of this
	// context should be canceled. Done may return nil if this context can
	// never be canceled. Successive calls to Done return the same value.
	// The close of the Done channel may happen asynchronously,
	// after the cancel function returns.
	//
	// WithCancel arranges for Done to be closed when cancel is called;
	// WithDeadline arranges for Done to be closed when the deadline
	// expires; WithTimeout arranges for Done to be closed when the timeout
	// elapses.
	//
	// Done is provided for use in select statements:
	//
	//  // Stream generates values with DoSomething and sends them to out
	//  // until DoSomething returns an error or ctx.Done is closed.
	//  func Stream(ctx context.ContextContext, out chan<- Value) error {
	//  	for {
	//  		v, err := DoSomething(ctx)
	//  		if err != nil {
	//  			return err
	//  		}
	//  		select {
	//  		case <-ctx.Done():
	//  			return ctx.Err()
	//  		case out <- v:
	//  		}
	//  	}
	//  }
	//
	// See https://blog.golang.org/pipelines for more examples of how to use
	// a Done channel for cancellation.
	Done() <-chan struct{}

	// If Done is not yet closed, Err returns nil.
	// If Done is closed, Err returns a non-nil error explaining why:
	// DeadlineExceeded if the context's deadline passed,
	// or Canceled if the context was canceled for some other reason.
	// After Err returns a non-nil error, successive calls to Err return the same error.
	Err() error

	// Value returns the value associated with this context for key, or nil
	// if no value is associated with key. Successive calls to Value with
	// the same key returns the same result.
	//
	// Use context values only for request-scoped data that transits
	// processes and API boundaries, not for passing optional parameters to
	// functions.
	//
	// A key identifies a specific value in a ContextContext. Functions that wish
	// to store values in ContextContext typically allocate a key in a global
	// variable then use that key as the argument to context.WithValue and
	// ContextContext.Value. A key can be any type that supports equality;
	// packages should define keys as an unexported type to avoid
	// collisions.
	//
	// Packages that define a ContextContext key should provide type-safe accessors
	// for the values stored using that key:
	//
	// 	// Package user defines a User type that's stored in Contexts.
	// 	package user
	//
	// 	import "context"
	//
	// 	// User is the type of value stored in the Contexts.
	// 	type User struct {...}
	//
	// 	// key is an unexported type for keys defined in this package.
	// 	// This prevents collisions with keys defined in other packages.
	// 	type key int
	//
	// 	// userKey is the key for user.User values in Contexts. It is
	// 	// unexported; clients use user.NewContext and user.FromContext
	// 	// instead of using this key directly.
	// 	var userKey key
	//
	// 	// NewContext returns a new ContextContext that carries value u.
	// 	func NewContext(ctx context.ContextContext, u *User) context.ContextContext {
	// 		return context.WithValue(ctx, userKey, u)
	// 	}
	//
	// 	// FromContext returns the User value stored in ctx, if any.
	// 	func FromContext(ctx context.ContextContext) (*User, bool) {
	// 		u, ok := ctx.Value(userKey).(*User)
	// 		return u, ok
	// 	}
	Value(key any) any
}

A ContextContext carries a deadline, a cancellation signal, and other values across API boundaries.

ContextContext's methods may be called by multiple goroutines simultaneously.

func Background 

func Background() ContextContext

Background returns a non-nil, empty ContextContext. It is never canceled, has no values, and has no deadline. It is typically used by the main function, initialization, and tests, and as the top-level ContextContext for incoming requests.

func TODO 

func TODO() ContextContext

TODO returns a non-nil, empty ContextContext. Code should use context.TODO when it's unclear which ContextContext to use or it is not yet available (because the surrounding function has not yet been extended to accept a ContextContext parameter).

func WithValue 

func WithValue(parent ContextContext, key, val any) ContextContext

WithValue returns a derived context that points to the parent ContextContext. In the derived context, the value associated with key is val.

Use context Values only for request-scoped data that transits processes and APIs, not for passing optional parameters to functions.

The provided key must be comparable and should not be of type string or any other built-in type to avoid collisions between packages using context. Users of WithValue should define their own types for keys. To avoid allocating when assigning to an interface{}, context keys often have concrete type struct{}. Alternatively, exported context key variables' static type should be a pointer or interface.

func WithoutCancel 

func WithoutCancel(parent ContextContext) ContextContext

WithoutCancel returns a derived context that points to the parent context and is not canceled when parent is canceled. The returned context returns no Deadline or Err, and its Done channel is nil. Calling Cause on the returned context returns nil.

type Corner 

type Corner int

Corner represents one of four rectangle corners. 

const (
	LowerLeft Corner = iota
	LowerRight
	UpperLeft
	UpperRight
)

The four corners of a rectangle.

func ParseOrigin 

func ParseOrigin(s string) (Corner, error)

type Creator 

type Creator struct {
	// XMLName xml.Name `xml:"http://purl.org/dc/elements/1.1/ creator"`
	Seq Seq `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Seq"`
}

type DecodeLazyObjectStreamObjectFunc 

type DecodeLazyObjectStreamObjectFunc func(c ContextContext, s string) (Object, error)

type Desc 

type Desc struct {
	// XMLName xml.Name `xml:"http://purl.org/dc/elements/1.1/ description"`
	Alt Alt `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Alt"`
}

type Description 

type Description struct {
	// XMLName      xml.Name `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Description"`
	Title        Title    `xml:"http://purl.org/dc/elements/1.1/ title"`
	Author       Creator  `xml:"http://purl.org/dc/elements/1.1/ creator"`
	Subject      Desc     `xml:"http://purl.org/dc/elements/1.1/ description"`
	Creator      string   `xml:"http://ns.adobe.com/xap/1.0/ CreatorTool"`
	CreationDate UserDate `xml:"http://ns.adobe.com/xap/1.0/ CreateDate"`
	ModDate      UserDate `xml:"http://ns.adobe.com/xap/1.0/ ModifyDate"`
	Producer     string   `xml:"http://ns.adobe.com/pdf/1.3/ Producer"`
	Trapped      bool     `xml:"http://ns.adobe.com/pdf/1.3/ Trapped"`
	Keywords     string   `xml:"http://ns.adobe.com/pdf/1.3/ Keywords"`
}

type Destination 

type Destination struct {
	Typ                      DestinationType
	PageNr                   int
	Left, Bottom, Right, Top int
	Zoom                     float32
}

Destination represents a PDF destination.

func (Destination) Array 

func (dest Destination) Array(indRef IndirectRef) Array

func (Destination) Name 

func (dest Destination) Name() NameType

func (Destination) String 

func (dest Destination) String() string

type DestinationType 

type DestinationType int

DestinationType represents the various PDF destination 

const (
	DestXYZ   DestinationType = iota // [page /XYZ left top zoom]
	DestFit                          // [page /Fit]
	DestFitH                         // [page /FitH top]
	DestFitV                         // [page /FitV left]
	DestFitR                         // [page /FitR left bottom right top]
	DestFitB                         // [page /FitB]
	DestFitBH                        // [page /FitBH top]
	DestFitBV                        // [page /FitBV left]
)

See table 151

type Dict 

type Dict map[string]Object

Dict represents a PDF dict object.

func FontDescriptor 

func FontDescriptor(xRefTable *XRefTable, fontDict Dict, objNr int) (Dict, error)

FontDescriptor gets the font descriptor for this

func FontResources 

func FontResources(xRefTable *XRefTable, fm FontMap) (Dict, error)

FontResources returns a font resource dict for a font map.

func NewDict 

func NewDict() Dict

NewDict returns a new PDFDict object.

func (Dict) ArrayEntry 

func (d Dict) ArrayEntry(key string) Array

ArrayEntry expects and returns a Array entry for given key.

func (Dict) BooleanEntry 

func (d Dict) BooleanEntry(key string) *bool

BooleanEntry expects and returns a BooleanEntry for given key.

func (Dict) Clone 

func (d Dict) Clone() Object

Clone returns a clone of d.

func (Dict) Delete 

func (d Dict) Delete(key string) (value Object)

Delete deletes the Object for given key.

func (Dict) DictEntry 

func (d Dict) DictEntry(key string) Dict

DictEntry expects and returns a PDFDict entry for given key.

func (Dict) Entry 

func (d Dict) Entry(dictName, key string, required bool) (Object, bool, error)

Entry returns the value for a given key and if the entry was found.

func (Dict) Find 

func (d Dict) Find(key string) (Object, bool)

Find returns the Object for given key and PDFDict.

func (Dict) First 

func (d Dict) First() *int

First returns a *int for key "First".

func (Dict) HexLiteralEntry 

func (d Dict) HexLiteralEntry(key string) *HexLiteral

HexLiteralEntry returns a HexLiteral object for given key.

func (*Dict) Increment 

func (d *Dict) Increment(key string) error

Increment increments the integer value for given key.

func (*Dict) IncrementBy 

func (d *Dict) IncrementBy(key string, i int) error

IncrementBy increments the integer value for given key by i.

func (Dict) Index 

func (d Dict) Index() Array

Index returns a *Array for key "Index".

func (Dict) IndirectRefEntry 

func (d Dict) IndirectRefEntry(key string) *IndirectRef

IndirectRefEntry returns an indirectRefEntry for given key for this dictionary.

func (Dict) Insert 

func (d Dict) Insert(k string, v Object) bool

Insert adds a new entry to this PDFDict.

func (Dict) InsertBool 

func (d Dict) InsertBool(key string, value bool)

InsertBool adds a new bool entry to this PDFDict.

func (Dict) InsertFloat 

func (d Dict) InsertFloat(key string, value float32)

InsertFloat adds a new float entry to this PDFDict.

func (Dict) InsertInt 

func (d Dict) InsertInt(key string, value int)

InsertInt adds a new int entry to this PDFDict.

func (Dict) InsertName 

func (d Dict) InsertName(key, value string)

InsertName adds a new name entry to this PDFDict.

func (Dict) InsertString 

func (d Dict) InsertString(key, value string)

InsertString adds a new string entry to this PDFDict.

func (Dict) Int64Entry 

func (d Dict) Int64Entry(key string) *int64

Int64Entry expects and returns a Integer entry representing an int64 value for given key.

func (Dict) IntEntry 

func (d Dict) IntEntry(key string) *int

IntEntry expects and returns a Integer entry for given key.

func (Dict) IsLinearizationParmDict 

func (d Dict) IsLinearizationParmDict() bool

IsLinearizationParmDict returns true if this dict has an int entry for key "Linearized".

func (Dict) IsObjStm 

func (d Dict) IsObjStm() bool

IsObjStm returns true if given PDFDict is an object stream.

func (Dict) IsPage 

func (d Dict) IsPage() bool

func (Dict) Len 

func (d Dict) Len() int

Len returns the length of this PDFDict.

func (Dict) Length 

func (d Dict) Length() (*int64, *int)

Length returns a *int64 for entry with key "Length". Stream length may be referring to an indirect object.

func (Dict) N 

func (d Dict) N() *int

N returns a *int for key "N".

func (Dict) NameEntry 

func (d Dict) NameEntry(key string) *string

NameEntry expects and returns a Name entry for given key.

func (Dict) NewIDForPrefix 

func (d Dict) NewIDForPrefix(prefix string, i int) string

NewIDForPrefix returns next id with prefix.

func (Dict) PDFString 

func (d Dict) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (Dict) Prev 

func (d Dict) Prev() *int64

Prev returns the previous offset.

func (Dict) Size 

func (d Dict) Size() *int

Size returns the value of the int entry for key "Size"

func (Dict) StreamDictEntry 

func (d Dict) StreamDictEntry(key string) *StreamDict

StreamDictEntry expects and returns a StreamDict entry for given key. unused.

func (Dict) String 

func (d Dict) String() string

func (Dict) StringEntry 

func (d Dict) StringEntry(key string) *string

StringEntry expects and returns a StringLiteral entry for given key.

func (Dict) StringEntryBytes 

func (d Dict) StringEntryBytes(key string) ([]byte, error)

StringEntryBytes returns the byte slice representing the string value for key.

func (Dict) StringLiteralEntry 

func (d Dict) StringLiteralEntry(key string) *StringLiteral

StringLiteralEntry returns a StringLiteral object for given key.

func (Dict) StringOrHexLiteralEntry 

func (d Dict) StringOrHexLiteralEntry(key string) (*string, error)

func (Dict) Subtype 

func (d Dict) Subtype() *string

Subtype returns the value of the name entry for key "Subtype".

func (Dict) Type 

func (d Dict) Type() *string

Type returns the value of the name entry for key "Type".

func (Dict) Update 

func (d Dict) Update(key string, value Object)

Update modifies an existing entry of this PDFDict.

func (Dict) W 

func (d Dict) W() Array

W returns a *Array for key "W".

type Dim 

type Dim struct {
	Width  float64 `json:"width"`
	Height float64 `json:"height"`
}

Dim represents the dimensions of a rectangular view medium like a PDF page, a sheet of paper or an image grid in user space, inches, centimetres or millimetres.

func ParsePageFormat 

func ParsePageFormat(v string) (*Dim, string, error)

func (Dim) AspectRatio 

func (d Dim) AspectRatio() float64

AspectRatio returns the relation between width and height.

func (Dim) ConvertToUnit 

func (d Dim) ConvertToUnit(unit DisplayUnit) Dim

ConvertToUnit converts d to unit.

func (Dim) Landscape 

func (d Dim) Landscape() bool

Landscape returns true if d is in landscape mode.

func (Dim) Portrait 

func (d Dim) Portrait() bool

Portrait returns true if d is in portrait mode.

func (Dim) String 

func (d Dim) String() string

func (Dim) ToCentimetres 

func (d Dim) ToCentimetres() Dim

ToCentimetres converts d to centimetres.

func (Dim) ToInches 

func (d Dim) ToInches() Dim

ToInches converts d to inches.

func (Dim) ToMillimetres 

func (d Dim) ToMillimetres() Dim

ToMillimetres converts d to millimetres.

type Direction 

type Direction int
const (
	L2R Direction = iota
	R2L
)

func DirectionFor 

func DirectionFor(s string) *Direction

func (*Direction) String 

func (d *Direction) String() string

type DisplayUnit 

type DisplayUnit int

DisplayUnit is the metric unit used to output paper sizes. 

const (
	POINTS DisplayUnit = iota
	INCHES
	CENTIMETRES
	MILLIMETRES
)

Options for display unit in effect.

type DuplicateImageObject 

type DuplicateImageObject struct {
	ImageDict *StreamDict
	NewObjNr  int
}

DuplicateImageObject represents a redundant image.

type Enc 

type Enc struct {
	O, U       []byte
	OE, UE     []byte
	Perms      []byte
	L, P, R, V int
	Emd        bool // encrypt meta data
	ID         []byte
}

Enc wraps around all defined encryption attributes.

type Filter 

type Filter interface {
	Encode(r io.Reader) (io.Reader, error)
	Decode(r io.Reader) (io.Reader, error)
	// DecodeLength will decode at least maxLen bytes. For filters where decoding
	// parts doesn't make sense (e.g. DCT), the whole stream is decoded.
	// If maxLen < 0 is passed, the whole stream is decoded.
	DecodeLength(r io.Reader, maxLen int64) (io.Reader, error)
}

Filter defines an interface for encoding/decoding PDF object streams.

func NewFilter 

func NewFilter(filterName string, parms map[string]int) (filter Filter, err error)

NewFilter returns a filter for given filterName and an optional parameter dictionary.

type Float 

type Float float64

Float represents a PDF float object.

func (Float) Clone 

func (f Float) Clone() Object

Clone returns a clone of f.

func (Float) PDFString 

func (f Float) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (Float) String 

func (f Float) String() string

func (Float) Value 

func (f Float) Value() float64

Value returns a float64 value for this PDF object.

type FontMap 

type FontMap map[string]FontResource

FontMap maps font names to font resources.

type FontObject 

type FontObject struct {
	ResourceNames []string
	Prefix        string
	FontName      string
	FontDict      Dict
	Data          []byte
	Extension     string
	Embedded      bool
}

FontObject represents a font used in a PDF file.

func (*FontObject) AddResourceName 

func (fo *FontObject) AddResourceName(resourceName string)

AddResourceName adds a resourceName referring to this font.

func (FontObject) Encoding 

func (fo FontObject) Encoding() string

Encoding returns the Encoding of this font.

func (FontObject) ResourceNamesString 

func (fo FontObject) ResourceNamesString() string

ResourceNamesString returns a string representation of all the resource names of this font.

func (FontObject) String 

func (fo FontObject) String() string

func (FontObject) SubType 

func (fo FontObject) SubType() string

SubType returns the SubType of this font.

type FontResource 

type FontResource struct {
	Res       Resource
	Lang      string
	CIDSet    *IndirectRef
	FontFile  *IndirectRef
	ToUnicode *IndirectRef
	W         *IndirectRef
}

type FreeTextAnnotation 

type FreeTextAnnotation struct {
	MarkupAnnotation
	Text                   string       // Rich text string, see XFA 3.3
	HAlign                 HAlignment   // Code specifying the form of quadding (justification)
	FontName               string       // font name
	FontSize               int          // font size
	FontCol                *SimpleColor // font color
	DS                     string       // Default style string
	Intent                 string       // Description of the intent of the free text annotation
	CallOutLine            Array        // if intent is FreeTextCallout
	CallOutLineEndingStyle string
	Margins                Array
	BorderWidth            float64
	BorderStyle            BorderStyle
	CloudyBorder           bool
	CloudyBorderIntensity  int // 0,1,2
}

FreeText AnnotationInterface displays text directly on the page.

func NewFreeTextAnnotation 

func NewFreeTextAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	text string,
	hAlign HAlignment,
	fontName string,
	fontSize int,
	fontCol *SimpleColor,
	ds string,
	intent *FreeTextIntent,
	callOutLine Array,
	callOutLineEndingStyle *LineEndingStyle,
	MLeft, MTop, MRight, MBot float64,
	borderWidth float64,
	borderStyle BorderStyle,
	cloudyBorder bool,
	cloudyBorderIntensity int,
) FreeTextAnnotation

NewFreeTextAnnotation returns a new free text annotation.

func (FreeTextAnnotation) RenderDict 

func (ann FreeTextAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a PDF annotation dict.

type FreeTextIntent 

type FreeTextIntent int

FreeTextIntent represents the various free text annotation intents. 

const (
	IntentFreeText FreeTextIntent = 1 << iota
	IntentFreeTextCallout
	IntentFreeTextTypeWriter
)

type HAlignment 

type HAlignment int

HAlignment represents the horizontal alignment of text. 

const (
	AlignLeft HAlignment = iota
	AlignCenter
	AlignRight
	AlignJustify
)

These are the options for horizontal aligned text.

func ParseHorAlignment 

func ParseHorAlignment(s string) (HAlignment, error)

type HexLiteral 

type HexLiteral string

HexLiteral represents a PDF hex literal object.

func NewHexLiteral 

func NewHexLiteral(b []byte) HexLiteral

NewHexLiteral creates a new HexLiteral for b..

func (HexLiteral) Bytes 

func (hexliteral HexLiteral) Bytes() ([]byte, error)

Bytes returns the byte representation.

func (HexLiteral) Clone 

func (hexliteral HexLiteral) Clone() Object

Clone returns a clone of hexliteral.

func (HexLiteral) PDFString 

func (hexliteral HexLiteral) PDFString() string

PDFString returns the string representation as found in and written to a PDF file.

func (HexLiteral) String 

func (hexliteral HexLiteral) String() string

func (HexLiteral) Value 

func (hexliteral HexLiteral) Value() string

Value returns a string value for this PDF object.

type HighlightAnnotation 

type HighlightAnnotation struct {
	TextMarkupAnnotation
}

func NewHighlightAnnotation 

func NewHighlightAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	quad QuadPoints,
) HighlightAnnotation

type ImageObject 

type ImageObject struct {
	ResourceNames map[int]string
	ImageDict     *StreamDict
}

ImageObject represents an image used in a PDF file.

func (*ImageObject) AddResourceName 

func (io *ImageObject) AddResourceName(pageNr int, resourceName string)

AddResourceName adds a resourceName to this imageObject's ResourceNames map.

func (ImageObject) ResourceNamesString 

func (io ImageObject) ResourceNamesString() string

ResourceNamesString returns a string representation of the ResourceNames for this image.

type IndirectRef 

type IndirectRef struct {
	ObjectNumber     Integer
	GenerationNumber Integer
}

IndirectRef represents a PDF indirect object.

func CIDFontDescriptor 

func CIDFontDescriptor(xRefTable *XRefTable, ttf TTFLight, fontName, baseFontName, fontLang string, embed bool) (*IndirectRef, error)

CIDFontDescriptor returns a font descriptor describing the CIDFont’s default metrics other than its glyph widths.

func CIDFontDict 

func CIDFontDict(xRefTable *XRefTable, ttf TTFLight, fontName, baseFontName, lang string, parms *cjk) (*IndirectRef, error)

CIDFontDict returns the descendant font dict with special encoding for Type0 fonts.

func CIDFontFile 

func CIDFontFile(xRefTable *XRefTable, fontName string, subFont bool) (*IndirectRef, error)

CIDFontFile returns a TrueType font file or subfont file for fontName.

func CIDSet 

func CIDSet(xRefTable *XRefTable, ttf TTFLight, fontName string, indRef *IndirectRef) (*IndirectRef, error)

CIDSet computes a CIDSet for used glyphs and updates or returns a new object.

func CIDWidths 

func CIDWidths(xRefTable *XRefTable, ttf TTFLight, fontName string, subFont bool, indRef *IndirectRef) (*IndirectRef, error)

CIDWidths returns the value for W in a CIDFontDict.

func EnsureFontDict 

func EnsureFontDict(xRefTable *XRefTable, fontName, lang, script string, field bool, indRef *IndirectRef) (*IndirectRef, error)

EnsureFontDict ensures a font dict for fontName, lang, script.

func NewFontDescriptor 

func NewFontDescriptor(xRefTable *XRefTable, ttf TTFLight, fontName, fontLang string) (*IndirectRef, error)

FontDescriptor returns a TrueType font descriptor describing font’s default metrics other than its glyph widths.

func NewIndirectRef 

func NewIndirectRef(objectNumber, generationNumber int) *IndirectRef

NewIndirectRef returns a new PDFIndirectRef object.

func PDFDocEncoding 

func PDFDocEncoding(xRefTable *XRefTable) (*IndirectRef, error)

func Widths 

func Widths(xRefTable *XRefTable, ttf TTFLight, first, last int) (*IndirectRef, error)

Widths returns the value for Widths in a TrueType FontDict.

func (IndirectRef) Clone 

func (ir IndirectRef) Clone() Object

Clone returns a clone of ir.

func (IndirectRef) PDFString 

func (ir IndirectRef) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (IndirectRef) String 

func (ir IndirectRef) String() string

type InheritedPageAttrs 

type InheritedPageAttrs struct {
	Resources Dict
	MediaBox  *Rectangle
	CropBox   *Rectangle
	Rotate    int
}

InheritedPageAttrs represents all inherited page attributes.

type InkAnnotation 

type InkAnnotation struct {
	MarkupAnnotation
	InkList     []InkPath // Array of n arrays, each representing a stroked path of points in user space.
	BorderWidth float64
	BorderStyle BorderStyle
}

func NewInkAnnotation 

func NewInkAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	ink []InkPath,
	borderWidth float64,
	borderStyle BorderStyle,
) InkAnnotation

func (InkAnnotation) RenderDict 

func (ann InkAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

type InkPath 

type InkPath []float64

A series of alternating x and y coordinates in PDF user space, specifying points along the path.

type IntSet 

type IntSet map[int]bool

IntSet is a set of integers.

type Integer 

type Integer int

Integer represents a PDF integer object.

func (Integer) Clone 

func (i Integer) Clone() Object

Clone returns a clone of i.

func (Integer) PDFString 

func (i Integer) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (Integer) String 

func (i Integer) String() string

func (Integer) Value 

func (i Integer) Value() int

Value returns an int value for this PDF object.

type LazyObjectStreamObject 

type LazyObjectStreamObject struct {
	// contains filtered or unexported fields
}

func (LazyObjectStreamObject) Clone 

func (l LazyObjectStreamObject) Clone() Object

func (*LazyObjectStreamObject) DecodedObject 

func (l *LazyObjectStreamObject) DecodedObject(c ContextContext) (Object, error)

func (*LazyObjectStreamObject) GetData 

func (l *LazyObjectStreamObject) GetData() ([]byte, error)

func (LazyObjectStreamObject) PDFString 

func (l LazyObjectStreamObject) PDFString() string

func (LazyObjectStreamObject) String 

func (l LazyObjectStreamObject) String() string

type LineAnnotation 

type LineAnnotation struct {
	MarkupAnnotation
	P1, P2                    Point   // Two points in default user space.
	LineEndings               Array   // Optional array of two names that shall specify the line ending styles.
	LeaderLineLength          float64 // Length of leader lines in default user space that extend from each endpoint of the line perpendicular to the line itself.
	LeaderLineOffset          float64 // Non-negative number that shall represent the length of the leader line offset, which is the amount of empty space between the endpoints of the annotation and the beginning of the leader lines.
	LeaderLineExtensionLength float64 // Non-negative number that shall represents the length of leader line extensions that extend from the line proper 180 degrees from the leader lines,
	Intent                    string  // Optional description of the intent of the line annotation.
	Measure                   Dict    // Optional measure dictionary that shall specify the scale and units that apply to the line annotation.
	Caption                   bool    // Use text specified by "Contents" or "RC" as caption.
	CaptionPositionTop        bool    // if true the caption shall be on top of the line else caption shall be centred inside the line.
	CaptionOffsetX            float64
	CaptionOffsetY            float64
	FillCol                   *SimpleColor
	BorderWidth               float64
	BorderStyle               BorderStyle
}

LineAnnotation represents a line annotation.

func NewLineAnnotation 

func NewLineAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	p1, p2 Point,
	beginLineEndingStyle *LineEndingStyle,
	endLineEndingStyle *LineEndingStyle,
	leaderLineLength float64,
	leaderLineOffset float64,
	leaderLineExtensionLength float64,
	intent *LineIntent,
	measure Dict,
	caption bool,
	captionPosTop bool,
	captionOffsetX float64,
	captionOffsetY float64,
	fillCol *SimpleColor,
	borderWidth float64,
	borderStyle BorderStyle,
) LineAnnotation

NewLineAnnotation returns a new line annotation.

func (LineAnnotation) RenderDict 

func (ann LineAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a PDF annotation dict.

type LineEndingStyle 

type LineEndingStyle int

LineEndingStyle (see table 179) 

const (
	LESquare LineEndingStyle = iota
	LECircle
	LEDiamond
	LEOpenArrow
	LEClosedArrow
	LENone
	LEButt
	LEROpenArrow
	LERClosedArrow
	LESlash
)

type LineIntent 

type LineIntent int

LineIntent represents the various line annotation intents. 

const (
	IntentLineArrow LineIntent = 1 << iota
	IntentLineDimension
)

type LineJoinStyle 

type LineJoinStyle int

LineJoinStyle represents the shape to be used at the corners of paths that are stroked (see 8.4.3.4) 

const (
	LJMiter LineJoinStyle = iota
	LJRound
	LJBevel
)

Render mode

type LinkAnnotation 

type LinkAnnotation struct {
	AnnotationInterface
	Dest        *Destination // internal link
	URI         string       // external link
	Quad        QuadPoints   // shall be ignored if any coordinate lies outside the region specified by Rect.
	Border      bool         // render border using borderColor.
	BorderWidth float64
	BorderStyle BorderStyle
}

LinkAnnotation represents a PDF link annotation.

func NewLinkAnnotation 

func NewLinkAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	borderCol *SimpleColor,

	dest *Destination,
	uri string,
	quad QuadPoints,
	border bool,
	borderWidth float64,
	borderStyle BorderStyle,
) LinkAnnotation

NewLinkAnnotation returns a new link annotation.

func (LinkAnnotation) ContentString 

func (ann LinkAnnotation) ContentString() string

ContentString returns a string representation of ann's content.

func (LinkAnnotation) RenderDict 

func (ann LinkAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a page annotation dict.

type MarkupAnnotation 

type MarkupAnnotation struct {
	AnnotationInterface
	T            string       // The text label that shall be displayed in the title bar of the annotation’s pop-up window when open and active. This entry shall identify the user who added the annotation.
	PopupIndRef  *IndirectRef // An indirect reference to a pop-up annotation for entering or editing the text associated with this annotation.
	CA           *float64     // (Default: 1.0) The constant opacity value that shall be used in painting the annotation.
	RC           string       // A rich text string that shall be displayed in the pop-up window when the annotation is opened.
	CreationDate string       // The date and time when the annotation was created.
	Subj         string       // Text representing a short description of the subject being addressed by the annotation.
}

MarkupAnnotation represents a PDF markup annotation.

func NewMarkupAnnotation 

func NewMarkupAnnotation(
	subType AnnotationType,
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,

	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,
) MarkupAnnotation

NewMarkupAnnotation returns a new markup annotation.

func (MarkupAnnotation) ContentString 

func (ann MarkupAnnotation) ContentString() string

ContentString returns a string representation of ann's content.

func (MarkupAnnotation) RenderDict 

func (ann MarkupAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

type NameMap 

type NameMap map[string][]Dict

func (NameMap) Add 

func (m NameMap) Add(k string, d Dict)

type NameType 

type NameType string

Name represents a PDF name object.

func (NameType) Clone 

func (nameObject NameType) Clone() Object

Clone returns a clone of nameObject.

func (NameType) PDFString 

func (nameObject NameType) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (NameType) String 

func (nameObject NameType) String() string

func (NameType) Value 

func (nameObject NameType) Value() string

Value returns a string value for this PDF object.

type Node 

type Node struct {
	Kids       []*Node // Mirror of the name tree's Kids array, an array of indirect references.
	Names      []entry // Mirror of the name tree's Names array.
	Kmin, Kmax string  // Mirror of the name tree's Limit array[Kmin,Kmax].
	D          Dict    // The PDF dict representing this name tree node.
}

Node is an opinionated implementation of the PDF name tree. pdfcpu caches all name trees found in the PDF catalog with this data structure. The PDF spec does not impose any rules regarding a strategy for the creation of nodes. A binary tree was chosen where each leaf node has a limited number of entries (maxEntries). Once maxEntries has been reached a leaf node turns into an intermediary node with two kids, which are leaf nodes each of them holding half of the sorted entries of the original leaf node.

func (*Node) Add 

func (n *Node) Add(xRefTable *XRefTable, k string, v Object, m NameMap, nameRefDictKeys []string) error

Add adds an entry to a name tree.

func (*Node) AddTree 

func (n *Node) AddTree(xRefTable *XRefTable, tree *Node, m NameMap, nameRefDictKeys []string) error

AddTree adds a name tree to a name tree.

func (*Node) AppendToNames 

func (n *Node) AppendToNames(k string, v Object)

AppendToNames adds an entry to a leaf node (for internalizing name trees).

func (*Node) HandleLeaf 

func (n *Node) HandleLeaf(xRefTable *XRefTable, k string, v Object, m NameMap, nameRefDictKeys []string) error

HandleLeaf processes a leaf node.

func (Node) KeyList 

func (n Node) KeyList() ([]string, error)

KeyList returns a sorted list of all keys.

func (*Node) Process 

func (n *Node) Process(xRefTable *XRefTable, handler func(*XRefTable, string, *Object) error) error

Process traverses the nametree applying a handler to each entry (key-value pair).

func (*Node) Remove 

func (n *Node) Remove(xRefTable *XRefTable, k string) (empty, ok bool, err error)

Remove removes an entry from a name tree. empty returns true if this node is an empty leaf node after removal. ok returns true if removal was successful.

func (Node) String 

func (n Node) String() string

func (Node) Value 

func (n Node) Value(k string) (Object, bool)

Value returns the value for given key

type NonFullScreenPageMode 

type NonFullScreenPageMode PageMode
const (
	NFSPageModeUseNone NonFullScreenPageMode = iota
	NFSPageModeUseOutlines
	NFSPageModeUseThumb
	NFSPageModeUseOC
)

type Object 

type Object interface {
	fmt.Stringer
	Clone() Object
	PDFString() string
}

Object defines an interface for all Objects.

func NewLazyObjectStreamObject 

func NewLazyObjectStreamObject(osd *ObjectStreamDictType, startOffset, endOffset int, decodeFunc DecodeLazyObjectStreamObjectFunc) Object

func ParseObject 

func ParseObject(line *string) (Object, error)

ParseObject parses next Object from string buffer and returns the updated (left clipped) buffer.

func ParseObjectContext 

func ParseObjectContext(c ContextContext, line *string) (Object, error)

ParseObjectContext parses next Object from string buffer and returns the updated (left clipped) buffer. If the passed context is cancelled, parsing will be interrupted.

func ParseObjectWithContext 

func ParseObjectWithContext(c ContextContext, ctx *Context, offset int64, objNr, genNr int) (Object, error)

type ObjectStreamDictType 

type ObjectStreamDictType struct {
	StreamDict
	Prolog         []byte
	ObjCount       int
	FirstObjOffset int
	ObjArray       Array
}

ObjectStreamDictType represents a object stream dictionary.

func NewObjectStreamDict 

func NewObjectStreamDict() *ObjectStreamDictType

NewObjectStreamDict creates a new ObjectStreamDictType object.

func ObjectStreamDict 

func ObjectStreamDict(sd *StreamDict) (*ObjectStreamDictType, error)

ObjectStreamDict creates a ObjectStreamDictType out of a StreamDict.

func (*ObjectStreamDictType) AddObject 

func (osd *ObjectStreamDictType) AddObject(objNumber int, pdfString string) error

AddObject adds another object to this object stream. Relies on decoded content!

func (*ObjectStreamDictType) Finalize 

func (osd *ObjectStreamDictType) Finalize()

Finalize prepares the final content of the objectstream.

func (*ObjectStreamDictType) IndexedObject 

func (osd *ObjectStreamDictType) IndexedObject(index int) (Object, error)

IndexedObject returns the object at given index from a ObjectStreamDictType.

type OptimizationContext 

type OptimizationContext struct {
	// Font section
	PageFonts         []IntSet            // For each page a registry of font object numbers.
	FontObjects       map[int]*FontObject // FontObject lookup table by font object number.
	FormFontObjects   map[int]*FontObject // FormFontObject lookup table by font object number.
	Fonts             map[string][]int    // All font object numbers registered for a font name.
	DuplicateFonts    map[int]Dict        // Registry of duplicate font dicts.
	DuplicateFontObjs IntSet              // The set of objects that represents the union of the object graphs of all duplicate font dicts.

	// Image section
	PageImages         []IntSet                      // For each page a registry of image object numbers.
	ImageObjects       map[int]*ImageObject          // ImageObject lookup table by image object number.
	DuplicateImages    map[int]*DuplicateImageObject // Registry of duplicate image dicts.
	DuplicateImageObjs IntSet                        // The set of objects that represents the union of the object graphs of all duplicate image dicts.

	ContentStreamCache map[int]*StreamDict
	FormStreamCache    map[int]*StreamDict

	DuplicateInfoObjects IntSet // Possible result of manual info dict modification.
	NonReferencedObjs    []int  // Objects that are not referenced.

	Cache     map[int]bool // For visited objects during optimization.
	NullObjNr *int         // objNr of a regular null object, to be used for fixing references to free objects.
}

OptimizationContext represents the context for the optimization of a PDF file.

func (*OptimizationContext) DuplicateFontObjectsString 

func (oc *OptimizationContext) DuplicateFontObjectsString() (int, string)

DuplicateFontObjectsString returns a formatted string and the number of objs.

func (*OptimizationContext) DuplicateImageObjectsString 

func (oc *OptimizationContext) DuplicateImageObjectsString() (int, string)

DuplicateImageObjectsString returns a formatted string and the number of objs.

func (*OptimizationContext) DuplicateInfoObjectsString 

func (oc *OptimizationContext) DuplicateInfoObjectsString() (int, string)

DuplicateInfoObjectsString returns a formatted string and the number of objs.

func (*OptimizationContext) IsDuplicateFontObject 

func (oc *OptimizationContext) IsDuplicateFontObject(i int) bool

IsDuplicateFontObject returns true if object #i is a duplicate font object.

func (*OptimizationContext) IsDuplicateImageObject 

func (oc *OptimizationContext) IsDuplicateImageObject(i int) bool

IsDuplicateImageObject returns true if object #i is a duplicate image object.

func (*OptimizationContext) IsDuplicateInfoObject 

func (oc *OptimizationContext) IsDuplicateInfoObject(i int) bool

IsDuplicateInfoObject returns true if object #i is a duplicate info object.

func (*OptimizationContext) NonReferencedObjsString 

func (oc *OptimizationContext) NonReferencedObjsString() (int, string)

NonReferencedObjsString returns a formatted string and the number of objs.

type Orientation 

type Orientation int

TODO Refactor because of orientation in nup.go 

const (
	Horizontal Orientation = iota
	Vertical
)

type PDFFilter 

type PDFFilter struct {
	Name        string
	DecodeParms Dict
}

PDFFilter represents a PDF stream filter object.

type PageBoundaries 

type PageBoundaries struct {
	Media       *Box   `json:"mediaBox,omitempty"`
	Crop        *Box   `json:"cropBox,omitempty"`
	Trim        *Box   `json:"trimBox,omitempty"`
	Bleed       *Box   `json:"bleedBox,omitempty"`
	Art         *Box   `json:"artBox,omitempty"`
	Rot         int    `json:"rot"` // The effective page rotation.
	Orientation string `json:"orient"`
}

PageBoundaries represent the defined PDF page boundaries.

func ParseBoxList 

func ParseBoxList(s string) (*PageBoundaries, error)

ParseBoxList parses a list of box

func ParsePageBoundaries 

func ParsePageBoundaries(s string, unit DisplayUnit) (*PageBoundaries, error)

ParsePageBoundaries parses a list of box definitions and assignments.

func (PageBoundaries) ArtBox 

func (pb PageBoundaries) ArtBox() *Rectangle

ArtBox returns the effective artbox for pb.

func (PageBoundaries) BleedBox 

func (pb PageBoundaries) BleedBox() *Rectangle

BleedBox returns the effective bleedbox for pb.

func (PageBoundaries) CropBox 

func (pb PageBoundaries) CropBox() *Rectangle

CropBox returns the effective cropbox for pb.

func (PageBoundaries) MediaBox 

func (pb PageBoundaries) MediaBox() *Rectangle

MediaBox returns the effective mediabox for pb.

func (*PageBoundaries) ResolveBox 

func (pb *PageBoundaries) ResolveBox(s string) error

ResolveBox resolves s and tries to assign an empty page boundary.

func (*PageBoundaries) SelectAll 

func (pb *PageBoundaries) SelectAll()

SelectAll selects all page boundaries.

func (PageBoundaries) String 

func (pb PageBoundaries) String() string

func (PageBoundaries) TrimBox 

func (pb PageBoundaries) TrimBox() *Rectangle

TrimBox returns the effective trimbox for pb.

type PageBoundary 

type PageBoundary int
const (
	MediaBox PageBoundary = iota
	CropBox
	TrimBox
	BleedBox
	ArtBox
)

func PageBoundaryFor 

func PageBoundaryFor(s string) *PageBoundary

func (*PageBoundary) String 

func (pb *PageBoundary) String() string

type PageLayout 

type PageLayout int
const (
	PageLayoutSinglePage PageLayout = iota
	PageLayoutTwoColumnLeft
	PageLayoutTwoColumnRight
	PageLayoutTwoPageLeft
	PageLayoutTwoPageRight
)

func PageLayoutFor 

func PageLayoutFor(s string) *PageLayout

func (*PageLayout) String 

func (pl *PageLayout) String() string

type PageMode 

type PageMode int
const (
	PageModeUseNone PageMode = iota
	PageModeUseOutlines
	PageModeUseThumbs
	PageModeFullScreen
	PageModeUseOC
	PageModeUseAttachments
)

func PageModeFor 

func PageModeFor(s string) *PageMode

func (*PageMode) String 

func (pm *PageMode) String() string

type PageResourceNames 

type PageResourceNames map[string]StringSet

PageResourceNames represents the required resource names for a specific page as extracted from its content streams.

func NewPageResourceNames 

func NewPageResourceNames() PageResourceNames

NewPageResourceNames returns initialized pageResourceNames.

func (PageResourceNames) HasContent 

func (prn PageResourceNames) HasContent() bool

HasContent returns true in any resource names present.

func (PageResourceNames) HasResources 

func (prn PageResourceNames) HasResources(s string) bool

HasResources returns true for any resource names present in resource subDict s.

func (PageResourceNames) Resources 

func (prn PageResourceNames) Resources(s string) StringSet

Resources returns a set of all required resource names for subdict s.

func (PageResourceNames) String 

func (prn PageResourceNames) String() string

type PaperHandling 

type PaperHandling int
const (
	Simplex PaperHandling = iota
	DuplexFlipShortEdge
	DuplexFlipLongEdge
)

func PaperHandlingFor 

func PaperHandlingFor(s string) *PaperHandling

func (*PaperHandling) String 

func (ph *PaperHandling) String() string

type PermissionFlags 

type PermissionFlags int

See table 22 - User access permissions 

const (
	UnusedFlag1              PermissionFlags = 1 << iota // Bit 1:  unused
	UnusedFlag2                                          // Bit 2:  unused
	PermissionPrintRev2                                  // Bit 3:  Print (security handlers rev.2), draft print (security handlers >= rev.3)
	PermissionModify                                     // Bit 4:  Modify contents by operations other than controlled by bits 6, 9, 11.
	PermissionExtract                                    // Bit 5:  Copy, extract text & graphics
	PermissionModAnnFillForm                             // Bit 6:  Add or modify annotations, fill form fields, in conjunction with bit 4 create/mod form fields.
	UnusedFlag7                                          // Bit 7:  unused
	UnusedFlag8                                          // Bit 8:  unused
	PermissionFillRev3                                   // Bit 9:  Fill form fields (security handlers >= rev.3)
	PermissionExtractRev3                                // Bit 10: Copy, extract text & graphics (security handlers >= rev.3) (unused since PDF 2.0)
	PermissionAssembleRev3                               // Bit 11: Assemble document (security handlers >= rev.3)
	PermissionPrintRev3                                  // Bit 12: Print (security handlers >= rev.3)
)

type PgAnnots 

type PgAnnots map[AnnotationType]Annot

PgAnnots represents a map of page annotations by type.

type Point 

type Point struct {
	X float64 `json:"x"`
	Y float64 `json:"y"`
}

Point represents a user space location.

func NewPoint 

func NewPoint(x, y float64) Point

func (Point) String 

func (p Point) String() string

func (*Point) Translate 

func (p *Point) Translate(dx, dy float64)

Translate modifies p's coordinates.

type PolyLineAnnotation 

type PolyLineAnnotation struct {
	MarkupAnnotation
	Vertices    Array  // Array of numbers specifying the alternating horizontal and vertical coordinates, respectively, of each vertex, in default user space.
	Path        Array  // Array of n arrays, each supplying the operands for a path building operator (m, l or c).
	Intent      string // Optional description of the intent of the polyline annotation.
	Measure     Dict   // Optional measure dictionary that shall specify the scale and units that apply to the annotation.
	FillCol     *SimpleColor
	BorderWidth float64
	BorderStyle BorderStyle
	LineEndings Array // Optional array of two names that shall specify the line ending styles.
}

func NewPolyLineAnnotation 

func NewPolyLineAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	vertices Array,
	path Array,
	intent *PolyLineIntent,
	measure Dict,
	fillCol *SimpleColor,
	borderWidth float64,
	borderStyle BorderStyle,
	beginLineEndingStyle *LineEndingStyle,
	endLineEndingStyle *LineEndingStyle,
) PolyLineAnnotation

NewPolyLineAnnotation returns a new polyline annotation.

func (PolyLineAnnotation) RenderDict 

func (ann PolyLineAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a PDF annotation dict.

type PolyLineIntent 

type PolyLineIntent int

PolyLineIntent represents the various polyline annotation intents. 

const (
	IntentPolyLinePolygonCloud PolyLineIntent = 1 << iota
	IntentPolyLineDimension
)

type PolygonAnnotation 

type PolygonAnnotation struct {
	MarkupAnnotation
	Vertices              Array  // Array of numbers specifying the alternating horizontal and vertical coordinates, respectively, of each vertex, in default user space.
	Path                  Array  // Array of n arrays, each supplying the operands for a path building operator (m, l or c).
	Intent                string // Optional description of the intent of the polygon annotation.
	Measure               Dict   // Optional measure dictionary that shall specify the scale and units that apply to the annotation.
	FillCol               *SimpleColor
	BorderWidth           float64
	BorderStyle           BorderStyle
	CloudyBorder          bool
	CloudyBorderIntensity int // 0,1,2
}

PolygonAnnotation represents a polygon annotation.

func NewPolygonAnnotation 

func NewPolygonAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	vertices Array,
	path Array,
	intent *PolygonIntent,
	measure Dict,
	fillCol *SimpleColor,
	borderWidth float64,
	borderStyle BorderStyle,
	cloudyBorder bool,
	cloudyBorderIntensity int,
) PolygonAnnotation

NewPolygonAnnotation returns a new polygon annotation.

func (PolygonAnnotation) RenderDict 

func (ann PolygonAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a PDF annotation dict.

type PolygonIntent 

type PolygonIntent int

PolygonIntent represents the various polygon annotation intents. 

const (
	IntentPolygonCloud PolygonIntent = 1 << iota
	IntentPolygonDimension
)

type PopupAnnotation 

type PopupAnnotation struct {
	AnnotationInterface
	ParentIndRef *IndirectRef // The optional parent markup annotation with which this pop-up annotation shall be associated.
	Open         bool         // A flag specifying whether the annotation shall initially be displayed open.
}

PopupAnnotation represents PDF Popup annotations.

func NewPopupAnnotation 

func NewPopupAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,

	parentIndRef *IndirectRef,
	displayOpen bool,
) PopupAnnotation

NewPopupAnnotation returns a new popup annotation.

func (PopupAnnotation) ContentString 

func (ann PopupAnnotation) ContentString() string

ContentString returns a string representation of ann's content.

func (PopupAnnotation) RenderDict 

func (ann PopupAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

type PrintScaling 

type PrintScaling int
const (
	PrintScalingNone PrintScaling = iota
	PrintScalingAppDefault
)

func PrintScalingFor 

func PrintScalingFor(s string) *PrintScaling

func (*PrintScaling) String 

func (ps *PrintScaling) String() string

type QuadLiteral 

type QuadLiteral struct {
	P1, P2, P3, P4 Point
}

QuadLiteral is a polygon with four edges and four vertices. The four vertices are assumed to be specified in counter clockwise order.

func NewQuadLiteralForRect 

func NewQuadLiteralForRect(r *Rectangle) *QuadLiteral

func (QuadLiteral) Array 

func (ql QuadLiteral) Array() Array

Array returns the PDF representation of ql.

func (QuadLiteral) EnclosingRectangle 

func (ql QuadLiteral) EnclosingRectangle(f float64) *Rectangle

EnclosingRectangle calculates the rectangle enclosing ql's vertices at a distance f.

type QuadPoints 

type QuadPoints []QuadLiteral

QuadPoints is an array of 8 × n numbers specifying the coordinates of n quadrilaterals in default user space.

func (*QuadPoints) AddQuadLiteral 

func (qp *QuadPoints) AddQuadLiteral(ql QuadLiteral)

AddQuadLiteral adds a quadliteral to qp.

func (*QuadPoints) Array 

func (qp *QuadPoints) Array() Array

Array returns the PDF representation of qp.

type RDF 

type RDF struct {
	XMLName     xml.Name `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# RDF"`
	Description Description
}

type ReadContextType 

type ReadContextType struct {
	FileName            string        // Input PDF-File.
	FileSize            int64         // Input file size.
	RS                  io.ReadSeeker // Input read seeker.
	EolCount            int           // 1 or 2 characters used for eol.
	BinaryTotalSize     int64         // total stream data
	BinaryImageSize     int64         // total image stream data
	BinaryFontSize      int64         // total font stream data (fontfiles)
	BinaryImageDuplSize int64         // total obsolet image stream data after optimization
	BinaryFontDuplSize  int64         // total obsolet font stream data after optimization
	Linearized          bool          // File is linearized.
	Hybrid              bool          // File is a hybrid PDF file.
	UsingObjectStreams  bool          // File is using object streams.
	ObjectStreams       IntSet        // All object numbers of any object streams found which need to be decoded.
	UsingXRefStreams    bool          // File is using xref streams.
	XRefStreams         IntSet        // All object numbers of any xref streams found.
}

ReadContext represents the context for reading a PDF file.

func (*ReadContextType) IsObjectStreamObject 

func (rc *ReadContextType) IsObjectStreamObject(i int) bool

IsObjectStreamObject returns true if object i is a an object stream. All compressed objects are object streams.

func (*ReadContextType) ObjectStreamsString 

func (rc *ReadContextType) ObjectStreamsString() (int, string)

ObjectStreamsString returns a formatted string and the number of object stream objects.

func (*ReadContextType) ReadFileSize 

func (rc *ReadContextType) ReadFileSize() int

ReadFileSize returns the size of the input file, if there is one.

type Rectangle 

type Rectangle struct {
	LL Point `json:"ll"`
	UR Point `json:"ur"`
}

Rectangle represents a rectangular region in userspace.

func ApplyBox 

func ApplyBox(boxName string, b *Box, d Dict, parent *Rectangle) *Rectangle

func NewRectangle 

func NewRectangle(llx, lly, urx, ury float64) *Rectangle

NewRectangle returns a new rectangle for given corner coordinates.

func RectForArray 

func RectForArray(arr Array) *Rectangle

func RectForDim 

func RectForDim(width, height float64) *Rectangle

RectForDim returns a new rectangle for given dimensions.

func RectForFormat 

func RectForFormat(f string) *Rectangle

RectForFormat returns a new rectangle for given format.

func RectForWidthAndHeight 

func RectForWidthAndHeight(llx, lly, width, height float64) *Rectangle

RectForWidthAndHeight returns a new rectangle for given dimensions.

func (Rectangle) Array 

func (r Rectangle) Array() Array

Array returns the PDF representation of a rectangle.

func (Rectangle) AspectRatio 

func (r Rectangle) AspectRatio() float64

AspectRatio returns the relation between width and height of a rectangle.

func (Rectangle) Center 

func (r Rectangle) Center() Point

Center returns the center point of a rectangle.

func (Rectangle) Clone 

func (r Rectangle) Clone() *Rectangle

Clone returns a clone of r.

func (Rectangle) Contains 

func (r Rectangle) Contains(p Point) bool

Contains returns true if rectangle r contains point p.

func (*Rectangle) ConvertToUnit 

func (r *Rectangle) ConvertToUnit(unit DisplayUnit) *Rectangle

ConvertToUnit converts r to unit.

func (Rectangle) CroppedCopy 

func (r Rectangle) CroppedCopy(margin float64) *Rectangle

CroppedCopy returns a copy of r with applied margin..

func (Rectangle) Dimensions 

func (r Rectangle) Dimensions() Dim

Dimensions returns r's dimensions.

func (Rectangle) Equals 

func (r Rectangle) Equals(r2 Rectangle) bool

func (Rectangle) FitsWithin 

func (r Rectangle) FitsWithin(r2 *Rectangle) bool

FitsWithin returns true if rectangle r fits within rectangle r2.

func (Rectangle) Format 

func (r Rectangle) Format(unit DisplayUnit) string

Format returns r's details converted into unit.

func (Rectangle) Height 

func (r Rectangle) Height() float64

Height returns the vertical span of a rectangle in userspace.

func (Rectangle) Landscape 

func (r Rectangle) Landscape() bool

Landscape returns true if r is in landscape mode.

func (Rectangle) Portrait 

func (r Rectangle) Portrait() bool

Portrait returns true if r is in portrait mode.

func (Rectangle) ScaledHeight 

func (r Rectangle) ScaledHeight(w float64) float64

ScaledHeight returns the height for given width according to r's aspect ratio.

func (Rectangle) ScaledWidth 

func (r Rectangle) ScaledWidth(h float64) float64

ScaledWidth returns the width for given height according to r's aspect ratio.

func (Rectangle) ShortString 

func (r Rectangle) ShortString() string

ShortString returns a compact string representation for r.

func (Rectangle) String 

func (r Rectangle) String() string

func (Rectangle) ToCentimetres 

func (r Rectangle) ToCentimetres() *Rectangle

ToCentimetres converts r to centimetres.

func (Rectangle) ToInches 

func (r Rectangle) ToInches() *Rectangle

ToInches converts r to inches.

func (Rectangle) ToMillimetres 

func (r Rectangle) ToMillimetres() *Rectangle

ToMillimetres converts r to millimetres.

func (*Rectangle) Translate 

func (r *Rectangle) Translate(dx, dy float64)

Translate moves r by dx and dy.

func (Rectangle) Visible 

func (r Rectangle) Visible() bool

func (Rectangle) Width 

func (r Rectangle) Width() float64

Width returns the horizontal span of a rectangle in userspace.

type RelPosition 

type RelPosition int

RelPosition represents the relative position of a text field's label. 

const (
	RelPosLeft RelPosition = iota
	RelPosRight
	RelPosTop
	RelPosBottom
)

These are the options for relative label positions.

func ParseRelPosition 

func ParseRelPosition(s string) (RelPosition, error)

type Resource 

type Resource struct {
	ID     string
	IndRef *IndirectRef
}

type RevocationDetails 

type RevocationDetails struct {
	Status int
	Reason string
}

func (RevocationDetails) String 

func (rd RevocationDetails) String() string

type Seq 

type Seq struct {
	// XMLName xml.Name `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Seq"`
	Entries []string `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# li"`
}

type Signature 

type Signature struct {
	Type          int
	Certified     bool
	Authoritative bool
	Visible       bool
	Signed        bool
	ObjNr         int
	PageNr        int
}

Signature represents a digital signature.

func (Signature) String 

func (sig Signature) String(status SignatureStatus) string

type SignatureDetails 

type SignatureDetails struct {
	SubFilter      string    // Signature Dict SubFilter
	SignerIdentity string    // extracted from signature
	SignerName     string    // Signature Dict Name
	ContactInfo    string    // Signature Dict ContactInfo
	Location       string    // Signature Dict Location
	Reason         string    // Signature Dict
	SigningTime    time.Time // Signature Dict M
	FieldName      string    // Signature Field T
	Signers        []*Signer
}

func (*SignatureDetails) AddSigner 

func (sd *SignatureDetails) AddSigner(s *Signer)

func (*SignatureDetails) IsETSI_CAdES_detached 

func (sd *SignatureDetails) IsETSI_CAdES_detached() bool

func (*SignatureDetails) IsETSI_RFC3161 

func (sd *SignatureDetails) IsETSI_RFC3161() bool

func (*SignatureDetails) Permissions 

func (sd *SignatureDetails) Permissions() int

func (SignatureDetails) String 

func (sd SignatureDetails) String() string

type SignatureReason 

type SignatureReason int
const (
	SignatureReasonUnknown SignatureReason = 1 << iota
	SignatureReasonDocNotModified
	SignatureReasonDocModified
	SignatureReasonSignatureForged
	SignatureReasonSigningTimeInvalid
	SignatureReasonTimestampTokenInvalid
	SignatureReasonCertInvalid
	SignatureReasonCertNotTrusted
	SignatureReasonCertExpired
	SignatureReasonCertRevoked
	SignatureReasonInternal
	SignatureReasonSelfSignedCertErr
)

func (SignatureReason) String 

func (sr SignatureReason) String() string

type SignatureStats 

type SignatureStats struct {
	FormSigned          int
	FormSignedVisible   int
	FormUnsigned        int
	FormUnsignedVisible int
	PageSigned          int
	PageSignedVisible   int
	PageUnsigned        int
	PageUnsignedVisible int
	URSigned            int
	URSignedVisible     int
	URUnsigned          int
	URUnsignedVisible   int
	DTSSigned           int
	DTSSignedVisible    int
	DTSUnsigned         int
	DTSUnsignedVisible  int

	Total int
}

SignatureStats represents signature stats for a file.

func (SignatureStats) Counter 

func (sigStats SignatureStats) Counter(svr *SignatureValidationResult) (*int, *int, *int, *int)

type SignatureStatus 

type SignatureStatus int

SignatureStatus represents all possible signature statuses. 

const (
	SignatureStatusUnknown SignatureStatus = 1 << iota
	SignatureStatusValid
	SignatureStatusInvalid
)

func (SignatureStatus) String 

func (st SignatureStatus) String() string

type SignatureValidationResult 

type SignatureValidationResult struct {
	Signature
	Status      SignatureStatus
	Reason      SignatureReason
	Details     SignatureDetails
	DocModified int
	Problems    []string
}

func (*SignatureValidationResult) AddProblem 

func (svr *SignatureValidationResult) AddProblem(s string)

func (*SignatureValidationResult) Certified 

func (svr *SignatureValidationResult) Certified() bool

func (*SignatureValidationResult) Permissions 

func (svr *SignatureValidationResult) Permissions() int

func (*SignatureValidationResult) SigningTime 

func (svr *SignatureValidationResult) SigningTime() string

func (SignatureValidationResult) String 

func (svr SignatureValidationResult) String() string

type Signer 

type Signer struct {
	Certificate           *CertificateDetails
	CertificatePathStatus int
	HasTimestamp          bool
	Timestamp             time.Time // signature timestamp attribute (which contains a timestamp token)
	LTVEnabled            bool      // needs timestamp token & revocation info
	PAdES                 string    // baseline level: B-B, B-T, B-LT, B-LTA
	Certified             bool      // indicated by DocMDP entry
	Authoritative         bool      // true if certified or first (youngest) signature
	Permissions           int       // see table 257
	Problems              []string
}

func (*Signer) AddProblem 

func (signer *Signer) AddProblem(s string)

func (Signer) String 

func (signer Signer) String(dts bool) string

type SimpleColor 

type SimpleColor struct {
	R, G, B float32 // intensities between 0 and 1.
}

SimpleColor is a simple rgb wrapper.

func NewSimpleColor 

func NewSimpleColor(rgb uint32) SimpleColor

NewSimpleColor returns a SimpleColor for rgb in the form 0x00RRGGBB

func NewSimpleColorForArray 

func NewSimpleColorForArray(arr Array) SimpleColor

NewSimpleColorForArray returns a SimpleColor for an r,g,b array.

func NewSimpleColorForHexCode 

func NewSimpleColorForHexCode(hexCol string) (SimpleColor, error)

NewSimpleColorForHexCode returns a SimpleColor for a #FFFFFF type hexadecimal rgb color representation.

func ParseColor 

func ParseColor(s string) (SimpleColor, error)

ParseColor turns a color string into a SimpleColor.

func (SimpleColor) Array 

func (sc SimpleColor) Array() Array

func (SimpleColor) String 

func (sc SimpleColor) String() string

type SquareAnnotation 

type SquareAnnotation struct {
	MarkupAnnotation
	FillCol               *SimpleColor
	Margins               Array
	BorderWidth           float64
	BorderStyle           BorderStyle
	CloudyBorder          bool
	CloudyBorderIntensity int // 0,1,2
}

SquareAnnotation represents a square annotation.

func NewSquareAnnotation 

func NewSquareAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	fillCol *SimpleColor,
	MLeft, MTop, MRight, MBot float64,
	borderWidth float64,
	borderStyle BorderStyle,
	cloudyBorder bool,
	cloudyBorderIntensity int,
) SquareAnnotation

NewSquareAnnotation returns a new square annotation.

func (SquareAnnotation) RenderDict 

func (ann SquareAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a page annotation dict.

type SquigglyAnnotation 

type SquigglyAnnotation struct {
	TextMarkupAnnotation
}

func NewSquigglyAnnotation 

func NewSquigglyAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	quad QuadPoints,
) SquigglyAnnotation

type StreamDict 

type StreamDict struct {
	Dict
	StreamOffset      int64
	StreamLength      *int64
	StreamLengthObjNr *int
	FilterPipeline    []PDFFilter
	Raw               []byte // Encoded
	Content           []byte // Decoded
	// DCTImage          image.Image
	IsPageContent bool
	CSComponents  int
}

StreamDict represents a PDF stream dict object.

func NewStreamDict 

func NewStreamDict(d Dict, streamOffset int64, streamLength *int64, streamLengthObjNr *int, filterPipeline []PDFFilter) StreamDict

NewStreamDict creates a new PDFStreamDict for given PDFDict, stream offset and length.

func (StreamDict) Clone 

func (sd StreamDict) Clone() Object

Clone returns a clone of sd.

func (*StreamDict) Decode 

func (sd *StreamDict) Decode() error

Decode applies sd's filter pipeline to sd.Raw in order to produce sd.Content.

func (*StreamDict) DecodeLength 

func (sd *StreamDict) DecodeLength(maxLen int64) ([]byte, error)

func (*StreamDict) Encode 

func (sd *StreamDict) Encode() error

Encode applies sd's filter pipeline to sd.Content in order to produce sd.Raw.

func (StreamDict) HasSoleFilterNamed 

func (sd StreamDict) HasSoleFilterNamed(filterName string) bool

HasSoleFilterNamed returns true if sd has a filterPipeline with 1 filter named filterName.

func (StreamDict) Image 

func (sd StreamDict) Image() bool

type StrikeOutAnnotation 

type StrikeOutAnnotation struct {
	TextMarkupAnnotation
}

func NewStrikeOutAnnotation 

func NewStrikeOutAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	quad QuadPoints,
) StrikeOutAnnotation

type StringLiteral 

type StringLiteral string

StringLiteral represents a PDF string literal object.

func (StringLiteral) Clone 

func (stringliteral StringLiteral) Clone() Object

Clone returns a clone of stringLiteral.

func (StringLiteral) PDFString 

func (stringliteral StringLiteral) PDFString() string

PDFString returns a string representation as found in and written to a PDF file.

func (StringLiteral) String 

func (stringliteral StringLiteral) String() string

func (StringLiteral) Value 

func (stringliteral StringLiteral) Value() string

Value returns a string value for this PDF object.

type StringSet 

type StringSet map[string]bool

StringSet is a set of strings.

func NewStringSet 

func NewStringSet(slice []string) StringSet

NewStringSet returns a new StringSet for slice.

type TTFLight 

type TTFLight struct {
	PostscriptName     string            // name: NameID 6
	Protected          bool              // OS/2: fsType
	UnitsPerEm         int               // head: unitsPerEm
	Ascent             int               // OS/2: sTypoAscender
	Descent            int               // OS/2: sTypoDescender
	CapHeight          int               // OS/2: sCapHeight
	FirstChar          uint16            // OS/2: fsFirstCharIndex
	LastChar           uint16            // OS/2: fsLastCharIndex
	UnicodeRange       [4]uint32         // OS/2: Unicode Character Range
	LLx, LLy, URx, URy float64           // head: xMin, yMin, xMax, yMax (fontbox)
	ItalicAngle        float64           // post: italicAngle
	FixedPitch         bool              // post: isFixedPitch
	Bold               bool              // OS/2: usWeightClass == 7
	HorMetricsCount    int               // hhea: numOfLongHorMetrics
	GlyphCount         int               // maxp: numGlyphs
	GlyphWidths        []int             // hmtx: fd.HorMetricsCount.advanceWidth
	Chars              map[uint32]uint16 // cmap: Unicode character to glyph index
	ToUnicode          map[uint16]uint32 // map glyph index to unicode character
	Planes             map[int]bool      // used Unicode planes
}

TTFLight represents a TrueType font w/o font file.

func (TTFLight) Gids 

func (fd TTFLight) Gids() []int

type TextAnnotation 

type TextAnnotation struct {
	MarkupAnnotation
	Open bool   // A flag specifying whether the annotation shall initially be displayed open.
	Name string // The name of an icon that shall be used in displaying the annotation. Comment, Key, (Note), Help, NewParagraph, Paragraph, Insert
}

TextAnnotation represents a PDF text annotation aka "Sticky Note".

func NewTextAnnotation 

func NewTextAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,

	displayOpen bool,
	name string,
) TextAnnotation

NewTextAnnotation returns a new text annotation.

func (TextAnnotation) RenderDict 

func (ann TextAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

RenderDict renders ann into a PDF annotation dict.

type TextMarkupAnnotation 

type TextMarkupAnnotation struct {
	MarkupAnnotation
	Quad QuadPoints
}

func NewTextMarkupAnnotation 

func NewTextMarkupAnnotation(
	subType AnnotationType,
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	quad QuadPoints,
) TextMarkupAnnotation

func (TextMarkupAnnotation) RenderDict 

func (ann TextMarkupAnnotation) RenderDict(xRefTable *XRefTable, pageIndRef *IndirectRef) (Dict, error)

type Title 

type Title struct {
	// XMLName xml.Name `xml:"http://purl.org/dc/elements/1.1/ title"`
	Alt Alt `xml:"http://www.w3.org/1999/02/22-rdf-syntax-ns# Alt"`
}

type TrustDetails 

type TrustDetails struct {
	Status                                int
	Reason                                string
	SourceObtainedFrom                    string
	AllowSignDocuments                    bool
	AllowCertifyDocuments                 bool
	AllowExecuteDynamicContent            bool
	AllowExecuteJavaScript                bool
	AllowExecutePrivilegedSystemOperation bool
}

func (TrustDetails) String 

func (td TrustDetails) String() string

type UnderlineAnnotation 

type UnderlineAnnotation struct {
	TextMarkupAnnotation
}

func NewUnderlineAnnotation 

func NewUnderlineAnnotation(
	rect Rectangle,
	apObjNr int,
	contents, id string,
	modDate string,
	f AnnotationFlags,
	col *SimpleColor,
	borderRadX float64,
	borderRadY float64,
	borderWidth float64,
	title string,
	popupIndRef *IndirectRef,
	ca *float64,
	rc, subject string,

	quad QuadPoints,
) UnderlineAnnotation

type UserDate 

type UserDate time.Time

func (*UserDate) UnmarshalXML 

func (ud *UserDate) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error

type VAlignment 

type VAlignment int

VAlignment represents the vertical alignment of text. 

const (
	AlignBaseline VAlignment = iota
	AlignTop
	AlignMiddle
	AlignBottom
)

These are the options for vertical aligned text.

type Version 

type Version int

Version is a type for the internal representation of PDF versions. 

const (
	V10 Version = iota
	V11
	V12
	V13
	V14
	V15
	V16
	V17
	V20
)

func PDFVersion 

func PDFVersion(versionStr string) (Version, error)

PDFVersion returns the PDFVersion for a version string.

func (Version) String 

func (v Version) String() string

String returns a string representation for a given PDFVersion.

type ViewerPrefJSON 

type ViewerPrefJSON struct {
	HideToolbar           *bool    `json:"hideToolbar,omitempty"`
	HideMenubar           *bool    `json:"hideMenubar,omitempty"`
	HideWindowUI          *bool    `json:"hideWindowUI,omitempty"`
	FitWindow             *bool    `json:"fitWindow,omitempty"`
	CenterWindow          *bool    `json:"centerWindow,omitempty"`
	DisplayDocTitle       *bool    `json:"displayDocTitle,omitempty"`
	NonFullScreenPageMode string   `json:"nonFullScreenPageMode,omitempty"`
	Direction             string   `json:"direction,omitempty"`
	ViewArea              string   `json:"viewArea,omitempty"`
	ViewClip              string   `json:"viewClip,omitempty"`
	PrintArea             string   `json:"printArea,omitempty"`
	PrintClip             string   `json:"printClip,omitempty"`
	PrintScaling          string   `json:"printScaling,omitempty"`
	Duplex                string   `json:"duplex,omitempty"`
	PickTrayByPDFSize     *bool    `json:"pickTrayByPDFSize,omitempty"`
	PrintPageRange        []int    `json:"printPageRange,omitempty"`
	NumCopies             *int     `json:"numCopies,omitempty"`
	Enforce               []string `json:"enforce,omitempty"`
}

type ViewerPreferences 

type ViewerPreferences struct {
	HideToolbar           *bool
	HideMenubar           *bool
	HideWindowUI          *bool
	FitWindow             *bool
	CenterWindow          *bool
	DisplayDocTitle       *bool // since 1.4
	NonFullScreenPageMode *NonFullScreenPageMode
	Direction             *Direction     // since 1.3
	ViewArea              *PageBoundary  // since 1.4 to 1.7
	ViewClip              *PageBoundary  // since 1.4 to 1.7
	PrintArea             *PageBoundary  // since 1.4 to 1.7
	PrintClip             *PageBoundary  // since 1.4 to 1.7
	PrintScaling          *PrintScaling  // since 1.6
	Duplex                *PaperHandling // since 1.7
	PickTrayByPDFSize     *bool          // since 1.7
	PrintPageRange        Array          // since 1.7
	NumCopies             *Integer       // since 1.7
	Enforce               Array          // since 2.0
}

ViewerPreferences see 12.2 Table 147

func DefaultViewerPreferences 

func DefaultViewerPreferences(version Version) *ViewerPreferences

func ViewerPreferencesWithDefaults 

func ViewerPreferencesWithDefaults(vp *ViewerPreferences, version Version) (*ViewerPreferences, error)

func (ViewerPreferences) List 

func (vp ViewerPreferences) List() []string

List generates output for the viewer pref command.

func (*ViewerPreferences) MarshalJSON 

func (vp *ViewerPreferences) MarshalJSON() ([]byte, error)

func (*ViewerPreferences) Populate 

func (vp *ViewerPreferences) Populate(vp1 *ViewerPreferences)

func (*ViewerPreferences) SetCenterWindow 

func (vp *ViewerPreferences) SetCenterWindow(val bool)

func (*ViewerPreferences) SetDisplayDocTitle 

func (vp *ViewerPreferences) SetDisplayDocTitle(val bool)

func (*ViewerPreferences) SetFitWindow 

func (vp *ViewerPreferences) SetFitWindow(val bool)

func (*ViewerPreferences) SetHideMenuBar 

func (vp *ViewerPreferences) SetHideMenuBar(val bool)

func (*ViewerPreferences) SetHideToolBar 

func (vp *ViewerPreferences) SetHideToolBar(val bool)

func (*ViewerPreferences) SetHideWindowUI 

func (vp *ViewerPreferences) SetHideWindowUI(val bool)

func (*ViewerPreferences) SetNumCopies 

func (vp *ViewerPreferences) SetNumCopies(i int)

func (*ViewerPreferences) SetPickTrayByPDFSize 

func (vp *ViewerPreferences) SetPickTrayByPDFSize(val bool)

func (ViewerPreferences) String 

func (vp ViewerPreferences) String() string

String generates output for the info command.

func (*ViewerPreferences) UnmarshalJSON 

func (vp *ViewerPreferences) UnmarshalJSON(data []byte) error

func (*ViewerPreferences) Validate 

func (vp *ViewerPreferences) Validate(version Version) error

type WriteContext 

type WriteContext struct {
	// The PDF-File which gets generated.
	*bufio.Writer                     // A writer associated with the underlying io.Writer.
	FileSize            int64         // The size of the written file (calculated from Writer).
	DirName             string        // The output directory.
	FileName            string        // The output file name.
	SelectedPages       IntSet        // For split, trim and extract.
	BinaryTotalSize     int64         // total stream data, counts 100% all stream data written.
	BinaryImageSize     int64         // total image stream data written = Read.BinaryImageSize.
	BinaryFontSize      int64         // total font stream data (fontfiles) = copy of Read.BinaryFontSize.
	Table               map[int]int64 // object write offsets
	Offset              int64         // current write offset
	OffsetSigByteRange  int64         // write offset of signature dict value for "ByteRange"
	OffsetSigContents   int64         // write offset of signature dict value for "Contents"
	WriteToObjectStream bool          // if true start to embed objects into object streams and obey ObjectStreamMaxObjects.
	CurrentObjStream    *int          // if not nil, any new non-stream-object gets added to the object stream with this object number.
	Eol                 string        // end of line char sequence
	Increment           bool          // Write context as PDF increment.
	ObjNrs              []int         // Increment candidate object numbers.
	OffsetPrevXRef      *int64        // Increment trailer entry "Prev".
}

WriteContext represents the context for writing a PDF file.

func NewWriteContext 

func NewWriteContext(eol string) *WriteContext

func (*WriteContext) HasWriteOffset 

func (wc *WriteContext) HasWriteOffset(objNumber int) bool

HasWriteOffset returns true if an object has already been written to PDFDestination.

func (*WriteContext) SetWriteOffset 

func (wc *WriteContext) SetWriteOffset(objNumber int)

SetWriteOffset saves the current write offset to the PDFDestination.

func (*WriteContext) WriteEol 

func (wc *WriteContext) WriteEol() error

WriteEol writes an end of line sequence.

type XMPMeta 

type XMPMeta struct {
	XMLName xml.Name `xml:"adobe:ns:meta/ xmpmeta"`
	RDF     RDF
}

type XRefStreamDict 

type XRefStreamDict struct {
	StreamDict
	Size           int
	Objects        []int
	W              [3]int
	PreviousOffset *int64
}

XRefStreamDict represents a cross reference stream dictionary.

func ParseXRefStreamDict 

func ParseXRefStreamDict(sd *StreamDict) (*XRefStreamDict, error)

ParseXRefStreamDict creates a XRefStreamDict out of a StreamDict.

type XRefTable 

type XRefTable struct {
	Table               map[int]*XRefTableEntry
	Size                *int               // from trailer dict.
	MaxObjNr            int                // after reading in all objects from xRef table.
	PageCount           int                // Number of pages.
	Root                *IndirectRef       // Pointer to catalog (reference to root object).
	RootDict            Dict               // Catalog
	Names               map[string]*Node   // Cache for name trees as found in catalog.
	Dests               Dict               // Named destinations
	NameRefs            map[string]NameMap // Name refs for merging only
	Encrypt             *IndirectRef       // Encrypt dict.
	E                   *Enc
	EncKey              []byte // Encrypt key.
	AES4Strings         bool
	AES4Streams         bool
	AES4EmbeddedStreams bool

	// PDF Version
	HeaderVersion *Version // The PDF version the source is claiming to us as per its header.
	RootVersion   *Version // Optional PDF version taking precedence over the header version.

	// Document information section
	ID             Array        // from trailer
	Info           *IndirectRef // Infodict (reference to info dict object)
	Title          string
	Subject        string
	Author         string
	Creator        string
	Producer       string
	CreationDate   string
	ModDate        string
	Keywords       string
	KeywordList    StringSet
	Properties     map[string]string
	CatalogXMPMeta *XMPMeta

	PageLayout *PageLayout
	PageMode   *PageMode
	ViewerPref *ViewerPreferences

	// Linearization section (not yet supported)
	OffsetPrimaryHintTable  *int64
	OffsetOverflowHintTable *int64
	LinearizationObjs       IntSet

	// Page annotation cache
	PageAnnots map[int]PgAnnots

	// Thumbnail images
	PageThumbs map[int]IndirectRef

	Signatures        map[int]map[int]Signature // form signatures and signatures located via page annotations only keyed by increment #.
	URSignature       Dict                      // usage rights signature
	CertifiedSigObjNr int                       // authoritative signature
	DSS               Dict                      // document security store, currently unsupported
	DTS               time.Time                 // trusted digital timestamp

	// Offspec section
	AdditionalStreams *Array // array of IndirectRef - trailer :e.g., Oasis "Open Doc"

	Tagged           bool // File is using tags.
	CustomExtensions bool // File is using custom extensions for annotations and/or keywords.

	// Validation
	CurPage        int                       // current page during validation
	CurObj         int                       // current object during validation, the last dereferenced object
	Conf           *Configuration            // current command being executed
	ValidationMode int                       // see Configuration
	ValidateLinks  bool                      // check for broken links in LinkAnnotations/URIDicts.
	Valid          bool                      // true means successful validated against ISO 32000.
	URIs           map[int]map[string]string // URIs for link checking

	Optimized      bool
	Watermarked    bool
	Form           Dict
	Outlines       Dict
	SignatureExist bool
	AppendOnly     bool

	// Fonts
	UsedGIDs  map[string]map[uint16]bool
	FillFonts map[string]IndirectRef
}

XRefTable represents a PDF cross reference table plus stats for a PDF file.

func (*XRefTable) AppendContent 

func (xRefTable *XRefTable) AppendContent(pageDict Dict, bb []byte) error

AppendContent appends bb to pageDict's content stream.

func (*XRefTable) AppendPages 

func (xRefTable *XRefTable) AppendPages(rootPageIndRef *IndirectRef, fromPageNr int, ctx *Context) (int, error)

func (*XRefTable) BindNameTrees 

func (xRefTable *XRefTable) BindNameTrees() error

BindNameTrees syncs up the internal name tree cache with the xreftable.

func (*XRefTable) BindPrinterPreferences 

func (xRefTable *XRefTable) BindPrinterPreferences(vp *ViewerPreferences, d Dict)

func (*XRefTable) BindViewerPreferences 

func (xRefTable *XRefTable) BindViewerPreferences()

func (*XRefTable) Catalog 

func (xRefTable *XRefTable) Catalog() (Dict, error)

Catalog returns a pointer to the root object / catalog.

func (*XRefTable) CatalogHasPieceInfo 

func (xRefTable *XRefTable) CatalogHasPieceInfo() (bool, error)

CatalogHasPieceInfo returns true if the root has an entry for \"PieceInfo\".

func (*XRefTable) DeleteDictEntry 

func (xRefTable *XRefTable) DeleteDictEntry(d Dict, key string) error

func (*XRefTable) DeleteObject 

func (xRefTable *XRefTable) DeleteObject(o Object) error

DeleteObject makes a deep remove of o.

func (*XRefTable) DeleteObjectGraph 

func (xRefTable *XRefTable) DeleteObjectGraph(o Object) error

DeleteObjectGraph deletes all objects reachable by indRef.

func (*XRefTable) Dereference 

func (xRefTable *XRefTable) Dereference(o Object) (Object, error)

Dereference resolves an indirect object and returns the resulting PDF object.

func (*XRefTable) DereferenceArray 

func (xRefTable *XRefTable) DereferenceArray(o Object) (Array, error)

DereferenceArray resolves and validates an array object, which may be an indirect reference.

func (*XRefTable) DereferenceBoolean 

func (xRefTable *XRefTable) DereferenceBoolean(o Object, sinceVersion Version) (*Boolean, error)

DereferenceBoolean resolves and validates a boolean object, which may be an indirect reference.

func (*XRefTable) DereferenceCSVSafeText 

func (xRefTable *XRefTable) DereferenceCSVSafeText(o Object) (string, error)

DereferenceCSVSafeText resolves and validates a string or hex literal object to a string.

func (*XRefTable) DereferenceDestArray 

func (xRefTable *XRefTable) DereferenceDestArray(key string) (Array, error)

DereferenceDestArray resolves the destination for key.

func (*XRefTable) DereferenceDict 

func (xRefTable *XRefTable) DereferenceDict(o Object) (Dict, error)

DereferenceDict resolves and validates a dictionary object, which may be an indirect reference.

func (*XRefTable) DereferenceDictEntry 

func (xRefTable *XRefTable) DereferenceDictEntry(d Dict, key string) (Object, error)

DereferenceDictEntry returns a dereferenced dict entry.

func (*XRefTable) DereferenceDictWithIncr 

func (xRefTable *XRefTable) DereferenceDictWithIncr(o Object) (Dict, int, error)

DereferenceDictWithIncr resolves and validates a dictionary object, which may be an indirect reference. It also returns the number of the written PDF Increment this object is part of. The higher the increment number the older the object.

func (*XRefTable) DereferenceFontDict 

func (xRefTable *XRefTable) DereferenceFontDict(indRef IndirectRef) (Dict, error)

DereferenceFontDict returns the font dict referenced by indRef.

func (*XRefTable) DereferenceForWrite 

func (xRefTable *XRefTable) DereferenceForWrite(o Object) (Object, error)

func (*XRefTable) DereferenceInteger 

func (xRefTable *XRefTable) DereferenceInteger(o Object) (*Integer, error)

DereferenceInteger resolves and validates an integer object, which may be an indirect reference.

func (*XRefTable) DereferenceName 

func (xRefTable *XRefTable) DereferenceName(o Object, sinceVersion Version, validate func(string) bool) (n NameType, err error)

DereferenceName resolves and validates a name object, which may be an indirect reference.

func (*XRefTable) DereferenceNumber 

func (xRefTable *XRefTable) DereferenceNumber(o Object) (float64, error)

DereferenceNumber resolves a number object, which may be an indirect reference and returns a float64.

func (*XRefTable) DereferencePageNodeDict 

func (xRefTable *XRefTable) DereferencePageNodeDict(indRef IndirectRef) (Dict, error)

DereferencePageNodeDict returns the page node dict referenced by indRef.

func (*XRefTable) DereferenceStreamDict 

func (xRefTable *XRefTable) DereferenceStreamDict(o Object) (*StreamDict, bool, error)

DereferenceStreamDict resolves a stream dictionary object.

func (*XRefTable) DereferenceStringEntryBytes 

func (xRefTable *XRefTable) DereferenceStringEntryBytes(d Dict, key string) ([]byte, error)

DereferenceStringEntryBytes returns the bytes of a string entry of d.

func (*XRefTable) DereferenceStringLiteral 

func (xRefTable *XRefTable) DereferenceStringLiteral(o Object, sinceVersion Version, validate func(string) bool) (s StringLiteral, err error)

DereferenceStringLiteral resolves and validates a string literal object, which may be an indirect reference.

func (*XRefTable) DereferenceStringOrHexLiteral 

func (xRefTable *XRefTable) DereferenceStringOrHexLiteral(obj Object, sinceVersion Version, validate func(string) bool) (s string, err error)

DereferenceStringOrHexLiteral resolves and validates a string or hex literal object, which may be an indirect reference.

func (*XRefTable) DereferenceText 

func (xRefTable *XRefTable) DereferenceText(o Object) (string, error)

DereferenceText resolves and validates a string or hex literal object to a string.

func (*XRefTable) DereferenceWithIncr 

func (xRefTable *XRefTable) DereferenceWithIncr(o Object) (Object, int, error)

Dereference resolves an indirect object and returns the resulting PDF object. It also returns the number of the written PDF Increment this object is part of. The higher the increment number the older the object.

func (*XRefTable) DereferenceXObjectDict 

func (xRefTable *XRefTable) DereferenceXObjectDict(indRef IndirectRef) (*StreamDict, error)

DereferenceXObjectDict resolves an XObject.

func (*XRefTable) DestName 

func (xRefTable *XRefTable) DestName(obj Object) (string, error)

func (*XRefTable) DumpObject 

func (xRefTable *XRefTable) DumpObject(objNr, mode int)

func (*XRefTable) EmptyPage 

func (xRefTable *XRefTable) EmptyPage(parentIndRef *IndirectRef, mediaBox *Rectangle) (*IndirectRef, error)

func (*XRefTable) EncryptDict 

func (xRefTable *XRefTable) EncryptDict() (Dict, error)

EncryptDict returns a pointer to the root object / catalog.

func (*XRefTable) EnsureCollection 

func (xRefTable *XRefTable) EnsureCollection() error

EnsureCollection makes sure there is a Collection entry in the catalog. Needed for portfolio / portable collections eg. for file attachments.

func (*XRefTable) EnsurePageCount 

func (xRefTable *XRefTable) EnsurePageCount() error

EnsurePageCount evaluates the page count for xRefTable if necessary.

func (*XRefTable) EnsureValidFreeList 

func (xRefTable *XRefTable) EnsureValidFreeList() error

EnsureValidFreeList ensures the integrity of the free list associated with the recorded free objects. See 7.5.4 Cross-Reference Table

func (*XRefTable) EnsureVersionForWriting 

func (xRefTable *XRefTable) EnsureVersionForWriting()

EnsureVersionForWriting sets the version to the highest supported PDF Version 1.7. This is necessary to allow validation after adding features not supported by the original version of a document as during watermarking.

func (*XRefTable) Exists 

func (xRefTable *XRefTable) Exists(objNr int) bool

Exists returns true if xRefTable contains an entry for objNumber.

func (*XRefTable) Find 

func (xRefTable *XRefTable) Find(objNr int) (*XRefTableEntry, bool)

Find returns the XRefTable entry for given object number.

func (*XRefTable) FindObject 

func (xRefTable *XRefTable) FindObject(objNr int) (Object, error)

FindObject returns the object of the XRefTableEntry for a specific object number.

func (*XRefTable) FindTableEntry 

func (xRefTable *XRefTable) FindTableEntry(objNr int, genNr int) (*XRefTableEntry, bool)

FindTableEntry returns the XRefTable entry for given object and generation numbers.

func (*XRefTable) FindTableEntryForIndRef 

func (xRefTable *XRefTable) FindTableEntryForIndRef(indRef *IndirectRef) (*XRefTableEntry, bool)

FindTableEntryForIndRef returns the XRefTable entry for given indirect reference.

func (*XRefTable) FindTableEntryLight 

func (xRefTable *XRefTable) FindTableEntryLight(objNr int) (*XRefTableEntry, bool)

FindTableEntryLight returns the XRefTable entry for given object number.

func (*XRefTable) Free 

func (xRefTable *XRefTable) Free(objNr int) (*XRefTableEntry, error)

Free returns the cross ref table entry for given number of a free object.

func (*XRefTable) FreeObject 

func (xRefTable *XRefTable) FreeObject(objNr int) error

FreeObject marks an objects xref table entry as free and inserts it into the free list right after the head.

func (*XRefTable) HasUsedGIDs 

func (xRefTable *XRefTable) HasUsedGIDs(fontName string) bool

func (*XRefTable) IDFirstElement 

func (xRefTable *XRefTable) IDFirstElement() (id []byte, err error)

IDFirstElement returns the first element of ID.

func (*XRefTable) IncrementRefCount 

func (xRefTable *XRefTable) IncrementRefCount(indRef *IndirectRef)

IncrementRefCount increments the number of references for the object pointed to by indRef.

func (*XRefTable) IndRefForNewObject 

func (xRefTable *XRefTable) IndRefForNewObject(obj Object) (*IndirectRef, error)

IndRefForNewObject inserts an object into the xRefTable and returns an indirect reference to it.

func (*XRefTable) InsertAndUseRecycled 

func (xRefTable *XRefTable) InsertAndUseRecycled(xRefTableEntry XRefTableEntry) (objNr int, err error)

InsertAndUseRecycled adds given xRefTableEntry into the cross reference table utilizing the freelist.

func (*XRefTable) InsertBlankPages 

func (xRefTable *XRefTable) InsertBlankPages(pages IntSet, dim *Dim, before bool) error

InsertBlankPages inserts a blank page before or after each selected page.

func (*XRefTable) InsertNew 

func (xRefTable *XRefTable) InsertNew(xRefTableEntry XRefTableEntry) (objNr int)

InsertNew adds given xRefTableEntry at next new objNumber into the cross reference table. Only to be called once an xRefTable has been generated completely and all trailer dicts have been processed. xRefTable.Size is the size entry of the first trailer dict processed. Called on creation of new object streams. Called by InsertAndUseRecycled.

func (*XRefTable) InsertObject 

func (xRefTable *XRefTable) InsertObject(obj Object) (objNr int, err error)

InsertObject inserts an object into the xRefTable.

func (*XRefTable) InsertPages 

func (xRefTable *XRefTable) InsertPages(parent *IndirectRef, p *int, ctx *Context) (int, error)

Zip in ctx's pages: for each page weave in the corresponding ctx page as long as there is one.

func (*XRefTable) IsBeingValidated 

func (xRefTable *XRefTable) IsBeingValidated(ir IndirectRef) (bool, error)

IsBeingValidated returns true if the object referenced by ir is being validated.

func (*XRefTable) IsLinearizationObject 

func (xRefTable *XRefTable) IsLinearizationObject(i int) bool

IsLinearizationObject returns true if object #i is a a linearization object.

func (*XRefTable) IsMerging 

func (xRefTable *XRefTable) IsMerging() bool

func (*XRefTable) IsObjBeingValidated 

func (xRefTable *XRefTable) IsObjBeingValidated(objNr, genNr int) (bool, error)

IsObjBeingValidated returns true if the object with objNr and genNr is being validated.

func (*XRefTable) IsObjValid 

func (xRefTable *XRefTable) IsObjValid(objNr, genNr int) (bool, error)

IsObjValid returns true if the object with objNr and genNr is valid.

func (*XRefTable) IsValid 

func (xRefTable *XRefTable) IsValid(ir IndirectRef) (bool, error)

IsValid returns true if the object referenced by ir is valid.

func (*XRefTable) LinearizationObjsString 

func (xRefTable *XRefTable) LinearizationObjsString() (int, string)

LinearizationObjsString returns a formatted string and the number of objs.

func (*XRefTable) LocateNameTree 

func (xRefTable *XRefTable) LocateNameTree(nameTreeName string, ensure bool) error

LocateNameTree locates/ensures a specific name tree.

func (*XRefTable) MissingObjects 

func (xRefTable *XRefTable) MissingObjects() (int, *string)

MissingObjects returns the number of objects that were not written plus the corresponding comma separated string representation.

func (*XRefTable) NameRef 

func (xRefTable *XRefTable) NameRef(nameType string) NameMap

func (*XRefTable) NamesDict 

func (xRefTable *XRefTable) NamesDict() (Dict, error)

NamesDict returns the dict that contains all name trees.

func (*XRefTable) NewEmbeddedStreamDict 

func (xRefTable *XRefTable) NewEmbeddedStreamDict(r io.Reader, modDate time.Time) (*IndirectRef, error)

NewEmbeddedStreamDict creates and returns an embeddedStreamDict containing the bytes represented by r.

func (*XRefTable) NewFileSpecDict 

func (xRefTable *XRefTable) NewFileSpecDict(f, uf, desc string, indRefStreamDict IndirectRef) (Dict, error)

NewFileSpecDict creates and returns a new fileSpec dictionary.

func (*XRefTable) NewStreamDictForBuf 

func (xRefTable *XRefTable) NewStreamDictForBuf(buf []byte) (*StreamDict, error)

NewStreamDictForBuf creates a streamDict for buf.

func (*XRefTable) NextForFree 

func (xRefTable *XRefTable) NextForFree(objNr int) (int, error)

NextForFree returns the number of the object the free object with objNumber links to. This is the successor of this free object in the free list.

func (*XRefTable) PageBoundaries 

func (xRefTable *XRefTable) PageBoundaries(selectedPages IntSet) ([]PageBoundaries, error)

PageBoundaries returns a sorted slice with page boundaries for all pages sorted ascending by page number.

func (*XRefTable) PageContent 

func (xRefTable *XRefTable) PageContent(d Dict, pageNr int) ([]byte, error)

PageContent returns the content in PDF syntax for page dict d.

func (*XRefTable) PageDict 

func (xRefTable *XRefTable) PageDict(pageNr int, consolidateRes bool) (Dict, *IndirectRef, *InheritedPageAttrs, error)

PageDict returns a specific page dict along with the resources, mediaBox and CropBox in effect. consolidateRes ensures optimized resources in InheritedPageAttrs.

func (*XRefTable) PageDictIndRef 

func (xRefTable *XRefTable) PageDictIndRef(page int) (*IndirectRef, error)

PageDictIndRef returns the pageDict IndRef for a logical page number.

func (*XRefTable) PageDims 

func (xRefTable *XRefTable) PageDims() ([]Dim, error)

PageDims returns a sorted slice with effective media box dimensions for all pages sorted ascending by page number.

func (*XRefTable) PageNumber 

func (xRefTable *XRefTable) PageNumber(pageObjNr int) (int, error)

PageNumber returns the logical page number for a page dict object number.

func (*XRefTable) Pages 

func (xRefTable *XRefTable) Pages() (*IndirectRef, error)

Pages returns the Pages reference contained in the catalog.

func (*XRefTable) ParseRootVersion 

func (xRefTable *XRefTable) ParseRootVersion() (v *string, err error)

ParseRootVersion returns a string representation for an optional Version entry in the root object.

func (*XRefTable) RectForArray 

func (xRefTable *XRefTable) RectForArray(a Array) (*Rectangle, error)

RectForArray returns a new rectangle for given Array.

func (*XRefTable) RemoveCollection 

func (xRefTable *XRefTable) RemoveCollection() error

RemoveCollection removes an existing Collection entry from the catalog.

func (*XRefTable) RemoveEmbeddedFilesNameTree 

func (xRefTable *XRefTable) RemoveEmbeddedFilesNameTree() error

RemoveEmbeddedFilesNameTree removes both the embedded files name tree and the Collection dict.

func (*XRefTable) RemoveNameTree 

func (xRefTable *XRefTable) RemoveNameTree(nameTreeName string) error

RemoveNameTree removes a specific name tree. Also removes a resulting empty names dict.

func (*XRefTable) RemoveSignature 

func (xRefTable *XRefTable) RemoveSignature()

func (*XRefTable) SetBeingValidated 

func (xRefTable *XRefTable) SetBeingValidated(ir IndirectRef) error

SetBeingValidated marks the xreftable entry of the object referenced by ir as being validated.

func (*XRefTable) SetValid 

func (xRefTable *XRefTable) SetValid(ir IndirectRef) error

SetValid marks the xreftable entry of the object referenced by ir as valid.

func (*XRefTable) StreamDictIndRef 

func (xRefTable *XRefTable) StreamDictIndRef(bb []byte) (*IndirectRef, error)

StreamDictIndRef creates a new stream dict for bb.

func (*XRefTable) UndeleteObject 

func (xRefTable *XRefTable) UndeleteObject(objectNumber int) error

UndeleteObject ensures an object is not recorded in the free list. e.g. sometimes caused by indirect references to free objects in the original PDF file.

func (*XRefTable) ValidateVersion 

func (xRefTable *XRefTable) ValidateVersion(element string, sinceVersion Version) error

ValidateVersion validates against the xRefTable's version.

func (*XRefTable) Version 

func (xRefTable *XRefTable) Version() Version

Version returns the PDF version of the PDF writer that created this file. Before V1.4 this is the header version. Since V1.4 the catalog may contain a Version entry which takes precedence over the header version.

func (*XRefTable) VersionString 

func (xRefTable *XRefTable) VersionString() string

VersionString return a string representation for this PDF files PDF version.

type XRefTableEntry 

type XRefTableEntry struct {
	Free            bool
	Offset          *int64
	Generation      *int
	Incr            int
	RefCount        int
	Object          Object
	Compressed      bool
	ObjectStream    *int
	ObjectStreamInd *int
	Valid           bool
	BeingValidated  bool
}

XRefTableEntry represents an entry in the PDF cross reference table.

This may wrap a free object, a compressed object or any in use PDF object:

Dict, StreamDict, ObjectStreamDictType, PDFXRefStreamDict, Array, Integer, Float, Name, StringLiteral, HexLiteral, Boolean

func NewFreeHeadXRefTableEntry 

func NewFreeHeadXRefTableEntry() *XRefTableEntry

NewFreeHeadXRefTableEntry returns the xref table entry for object 0 which is per definition the head of the free list (list of free objects).

func NewXRefTableEntryGen0 

func NewXRefTableEntryGen0(obj Object) *XRefTableEntry

NewXRefTableEntryGen0 returns a cross reference table entry for an object with generation 0.

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