Documentation
¶
Index ¶
- Constants
- func Equal(obj1, obj2 Object) bool
- type Array
- type Boolean
- type CIDFont
- type CIDSystemInfoDictionary
- type ColorSpaceFamily
- type Date
- type Dictionary
- type DocumentCatalog
- type Encoding
- type EncryptionDictionary
- type FileSpecification
- type Filter
- type Font
- type FontDescriptor
- type FontSubType
- type FontType
- type Form
- type Function
- type GraphicsState
- type Image
- type IndirectObject
- type InformationDictionary
- type Int
- type Name
- type NameDictionary
- type NameTree
- type Null
- type Number
- type NumberTree
- type Object
- type ObjectStreamDictionary
- type Page
- type PageTreeNode
- type ProcedureSet
- type RawIndirectObject
- type Rectangle
- type Reference
- type RenderingMode
- type ResourceDictionary
- type StandardFont
- type StandardFontName
- type StandardSecurityHandler
- type StreamDictionary
- type StreamFont
- type StreamObject
- type String
- type TextState
- type TextString
- type Trailer
- type Type0Font
- type Type3Font
Constants ¶
View Source
const ( ColorSpace_DeviceGray = ColorSpaceFamily("DeviceGray") ColorSpace_DeviceRGB = ColorSpaceFamily("DeviceRGB") ColorSpace_DeviceCMYK = ColorSpaceFamily("DeviceCMYK") ColorSpace_CalGray = ColorSpaceFamily("CalGray") ColorSpace_CalRGB = ColorSpaceFamily("CalRGB") ColorSpace_Lab = ColorSpaceFamily("Lab") ColorSpace_ICCBased = ColorSpaceFamily("ICCBased") ColorSpace_Indexed = ColorSpaceFamily("Indexed") ColorSpace_Pattern = ColorSpaceFamily("Pattern") ColorSpace_Separation = ColorSpaceFamily("Separation") ColorSpace_DeviceN = ColorSpaceFamily("DeviceN") )
Variables ¶
This section is empty.
Functions ¶
Types ¶
type CIDFont ¶
type CIDFont struct {
// (Required) The type of CIDFont; CIDFontType0 or CIDFontType2.
Subtype FontSubType
// (Required) The PostScript name of the CIDFont. For Type 0 CIDFonts, this
// is usually the value of the CIDFontName entry in the CIDFont program. For
// Type 2 CIDFonts, it is derived the same way as for a simple TrueType font;
// see Section 5.5.2, “TrueType Fonts.” In either case, the name can have a sub-
// set prefix if appropriate; see Section 5.5.3, “Font Subsets.”
BaseFont Name
// (Required) A dictionary containing entries that define the character collec-
// tion of the CIDFont. See Table 5.12 on page 337.
CIDSystemInfo Object
// (Required; must be an indirect reference) A font descriptor describing the
// CIDFont’s default metrics other than its glyph widths (see Section 5.7,
// “Font Descriptors”).
FontDescriptor Reference
// (Optional) The default width for glyphs in the CIDFont (see “Glyph Met-
// rics in CIDFonts” on page 340). Default value: 1000.
DW Object
// (Optional) A description of the widths for the glyphs in the CIDFont. The
// array’s elements have a variable format that can specify individual widths
// for consecutive CIDs or one width for a range of CIDs (see “Glyph Metrics
// in CIDFonts” on page 340). Default value: none (the DW value is used for
// all glyphs).
W Object
// (Optional; applies only to CIDFonts used for vertical writing) An array of two
// numbers specifying the default metrics for vertical writing (see “Glyph
// Metrics in CIDFonts” on page 340). Default value: [880 −1000].
DW2 Object
// (Optional; applies only to CIDFonts used for vertical writing) A description of
// the metrics for vertical writing for the glyphs in the CIDFont (see “Glyph
// Metrics in CIDFonts” on page 340). Default value: none (the DW2 value is
// used for all glyphs).
W2 Object
// (Optional; Type 2 CIDFonts only) A specification of the mapping from CIDs
// to glyph indices. If the value is a stream, the bytes in the stream contain the
// mapping from CIDs to glyph indices: the glyph index for a particular CID
// value c is a 2-byte value stored in bytes 2 ◊ c and 2 ◊ c + 1, where the first
// byte is the high-order byte. If the value of CIDToGIDMap is a name, it must
// be Identity, indicating that the mapping between CIDs and glyph indices is
// the identity mapping. Default value: Identity.
// This entry may appear only in a Type 2 CIDFont whose associated True-
// Type font program is embedded in the PDF file (see the next section).
CIDToGIDMap Object
}
func (*CIDFont) Read ¶ added in v1.0.5
func (q *CIDFont) Read(dict Dictionary) error
func (CIDFont) ToRawBytes ¶
type CIDSystemInfoDictionary ¶
type CIDSystemInfoDictionary struct {
// (Required) A string identifying the issuer of the character collection—for exam-
// ple, Adobe. For information about assigning a registry identifier, consult the ASN
// Developer Program Web site or contact the Adobe Solutions Network (see the
// Bibliography).
Registry String
// (Required) A string that uniquely names the character collection within the speci-
// fied registry—for example, Japan1.
Ordering String
// (Required) The supplement number of the character collection. An original charac-
// ter collection has a supplement number of 0. Whenever additional CIDs are
// assigned in a character collection, the supplement number is increased. Supple-
// ments do not alter the ordering of existing CIDs in the character collection. This
// value is not used in determining compatibility between character collections.
Supplement Int
}
func (CIDSystemInfoDictionary) Copy ¶ added in v1.0.5
func (q CIDSystemInfoDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (CIDSystemInfoDictionary) Equal ¶ added in v1.0.49
func (q CIDSystemInfoDictionary) Equal(obj Object) bool
func (CIDSystemInfoDictionary) ToRawBytes ¶
func (q CIDSystemInfoDictionary) ToRawBytes() []byte
type ColorSpaceFamily ¶
type ColorSpaceFamily Name
func (ColorSpaceFamily) Copy ¶ added in v1.0.5
func (q ColorSpaceFamily) Copy(_ func(reference Reference) Reference) Object
func (ColorSpaceFamily) Equal ¶ added in v1.0.49
func (q ColorSpaceFamily) Equal(obj Object) bool
func (ColorSpaceFamily) ToRawBytes ¶
func (q ColorSpaceFamily) ToRawBytes() []byte
type Date ¶
func (Date) ToRawBytes ¶
type Dictionary ¶
func (Dictionary) Copy ¶ added in v1.0.5
func (q Dictionary) Copy(copyRef func(reference Reference) Reference) Object
func (Dictionary) Equal ¶ added in v1.0.49
func (q Dictionary) Equal(obj Object) bool
func (Dictionary) ToRawBytes ¶
func (q Dictionary) ToRawBytes() []byte
type DocumentCatalog ¶
type DocumentCatalog struct {
// (Optional; PDF 1.4) The version of the PDF specification to which the
// document conforms (for example, 1.4), if later than the version specified
// in the file’s header (see Section 3.4.1, “File Header”). If the header speci-
// fies a later version, or if this entry is absent, the document conforms to
// the version specified in the header. This entry enables a PDF producer
// application to update the version using an incremental update; see Sec-
// tion 3.4.5, “Incremental Updates.” (See implementation note 18 in Ap-
// pendix H.)
// Note: The value of this entry is a name object, not a number, and so must
// be preceded by a slash character (/) when written in the PDF file (for ex-
// ample, /1.4).
Version Name
// (Required; must be an indirect reference) The page tree node that is the
// root of the document’s page tree (see Section 3.6.2, “Page Tree”).
Pages Reference
// (Optional; PDF 1.3) A number tree (see Section 3.8.5, “Number Trees”)
// defining the page labeling for the document. The keys in this tree are
// page indices; the corresponding values are page label dictionaries (see
// Section 8.3.1, “Page Labels”). Each page index denotes the first page in a
// labeling range to which the specified page label dictionary applies. The
// tree must include a value for page index 0.
PageLabels Object
// (Optional; PDF 1.2) The document’s name dictionary (see Section 3.6.3,
// “Name Dictionary”).
Names Object
// (Optional; PDF 1.1; must be an indirect reference) A dictionary of names
// and corresponding destinations (see “Named Destinations” on page
// 476).
Dests Reference
// (Optional; PDF 1.2) A viewer preferences dictionary (see Section 8.1,
// “Viewer Preferences”) specifying the way the document is to be dis-
// played on the screen. If this entry is absent, viewer applications should
// use their own current user preference settings.
ViewerPreferences Object
// (Optional) A name object specifying the page layout to be used when the
// document is opened:
// SinglePage Display one page at a time.
// OneColumn Display the pages in one column.
// TwoColumnLeft Display the pages in two columns, with odd-
// numbered pages on the left.
// TwoColumnRight Display the pages in two columns, with odd-
// numbered pages on the right.
// (See implementation note 19 in Appendix H.) Default value: SinglePage.
PageLayout Name
// (Optional) A name object specifying how the document should be dis-
// played when opened:
// UseNone Neither document outline nor thumbnail im-
// ages visible
// UseOutlines Document outline visible
// UseThumbs Thumbnail images visible
// FullScreen Full-screen mode, with no menu bar, window
// controls, or any other window visible
// Default value: UseNone.
PageMode Name
// (Optional; must be an indirect reference) The outline dictionary that is the
// root of the document’s outline hierarchy (see Section 8.2.2, “Document
// Outline”).
Outlines Reference
// (Optional; PDF 1.1; must be an indirect reference) An array of thread
// dictionaries representing the document’s article threads (see Section
// 8.3.2, “Articles”).
Threads Array
// (Optional; PDF 1.1) A value specifying a destination to be displayed or
// an action to be performed when the document is opened. The value is
// either an array defining a destination (see Section 8.2.1, “Destinations”)
// or an action dictionary representing an action (Section 8.5, “Actions”). If
// this entry is absent, the document should be opened to the top of the
// first page at the default magnification factor.
OpenAction Object // can be reference as well
// (Optional; PDF 1.1) A value specifying a destination to be displayed or
// dictionary an action to be performed when the document is opened. The value is
// either an array defining a destination (see Section 8.2.1, “Destinations”)
// or an action dictionary representing an action (Section 8.5, “Actions”). If
// this entry is absent, the document should be opened to the top of the
// first page at the default magnification factor.
AdditionalActions Object
// (Optional) A URI dictionary containing document-level information for
// URI (uniform resource identifier) actions (see “URI Actions” on page
// 523).
URI Object
// (Optional; PDF 1.2) The document’s interactive form (AcroForm) dic-
// tionary (see Section 8.6.1, “Interactive Form Dictionary”).
AcroForm Object
// (Optional; PDF 1.4; must be an indirect reference) A metadata stream
// containing metadata for the document (see Section 9.2.2, “Metadata
// Streams”).
Metadata Reference
// (Optional; PDF 1.3) The document’s structure tree root dictionary (see
// Section 9.6.1, “Structure Hierarchy”).
StructTreeRoot Object
// (Optional; PDF 1.4) A mark information dictionary containing informa-
// tion about the document’s usage of Tagged PDF conventions (see Sec-
// tion 9.7.1, “Mark Information Dictionary”).
MarkInfo Object
// (Optional; PDF 1.4) A language identifier specifying the natural language
// for all text in the document except where overridden by language speci-
// fications for structure elements or marked content (see Section 9.8.1,
// “Natural Language Specification”). If this entry is absent, the language is
// considered unknown.
Lang String
// (Optional; PDF 1.3) A Web Capture information dictionary containing
// state information used by the Acrobat Web Capture (AcroSpider) plug-
// in extension (see Section 9.9.1, “Web Capture Information Dictionary”).
SpiderInfo Object
// (Optional; PDF 1.4) An array of output intent dictionaries describing the
// color characteristics of output devices on which the document might be
// rendered (see “Output Intents” on page 684).
OutputIntents Object // seems that it can also be a refernece
}
func (DocumentCatalog) Copy ¶ added in v1.0.5
func (q DocumentCatalog) Copy(copyRef func(reference Reference) Reference) Object
func (DocumentCatalog) Equal ¶ added in v1.0.49
func (q DocumentCatalog) Equal(obj Object) bool
func (*DocumentCatalog) Read ¶ added in v1.0.5
func (q *DocumentCatalog) Read(dict Dictionary) error
func (DocumentCatalog) ToRawBytes ¶
func (q DocumentCatalog) ToRawBytes() []byte
type Encoding ¶
type Encoding Name
func (Encoding) ToRawBytes ¶
type EncryptionDictionary ¶
type EncryptionDictionary struct {
// (Required) The name of the security handler for this document; see below. Default value:
// Standard, for the built-in security handler. (Names for other security handlers can be
// registered using the procedure described in Appendix E.)
Filter Name
// (Optional but strongly recommended) A code specifying the algorithm to be used in en-
// crypting and decrypting the document:
// 0 An algorithm that is undocumented and no longer supported, and whose use is
// strongly discouraged.
// 1 Algorithm 3.1 on page 73, with an encryption key length of 40 bits; see below.
// 2 (PDF 1.4) Algorithm 3.1 on page 73, but allowing encryption key lengths greater
// than 40 bits.
// 3 (PDF 1.4) An unpublished algorithm allowing encryption key lengths ranging
// from 40 to 128 bits. (This algorithm is unpublished as an export requirement of
// the U.S. Department of Commerce.)
// The default value if this entry is omitted is 0, but a value of 1 or greater is strongly rec-
// ommended. (See implementation note 15 in Appendix H.)
V Number
// (Optional; PDF 1.4; only if V is 2 or 3) The length of the encryption key, in bits. The value
// must be a multiple of 8, in the range 40 to 128. Default value: 40.
Length Int
}
func (EncryptionDictionary) Copy ¶ added in v1.0.49
func (q EncryptionDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (EncryptionDictionary) Equal ¶ added in v1.0.49
func (q EncryptionDictionary) Equal(obj Object) bool
func (EncryptionDictionary) ToRawBytes ¶
func (q EncryptionDictionary) ToRawBytes() []byte
type FileSpecification ¶
type FileSpecification struct {
// (Required if an EF or RF entry is present; recommended always) The type of PDF object
// that this dictionary describes; must be Filespec for a file specification dictionary.
Type Name
// (Optional) The name of the file system to be used to interpret this file specification. If
// this entry is present, all other entries in the dictionary are interpreted by the desig-
// nated file system. PDF defines only one standard file system, URL (see Section 3.10.4,
// “URL Specifications”); a viewer application or plug-in extension can register a differ-
// ent one (see Appendix E). Note that this entry is independent of the F, DOS, Mac, and
// Unix entries.
FS Name
// (Required if the DOS, Mac, and Unix entries are all absent) A file specification string of
// the form described in Section 3.10.1, “File Specification Strings,” or (if the file system
// is URL) a uniform resource locator, as described in Section 3.10.4, “URL Specifica-
// tions.”
F String
// (Optional) A file specification string (see Section 3.10.1, “File Specification Strings”)
// representing a DOS file name.
DOS String
// (Optional) A file specification string (see Section 3.10.1, “File Specification Strings”)
// representing a Mac OS file name.
Mac String
// (Optional) A file specification string (see Section 3.10.1, “File Specification Strings”)
// representing a UNIX file name.
Unix String
// (Optional) An array of two strings constituting a file identifier (see Section 9.3, “File
// Identifiers”) that is also included in the referenced file. The use of this entry improves
// a viewer application’s chances of finding the intended file and allows it to warn the
// user if the file has changed since the link was made.
ID Array
// (Optional; PDF 1.2) A flag indicating whether the file referenced by the file specifica-
// tion is volatile (changes frequently with time). If the value is true, viewer applications
// should never cache a copy of the file. For example, a movie annotation referencing a
// URL to a live video camera could set this flag to true, notifying the application that it
// should reacquire the movie each time it is played. Default value: false.
V Object
// (Required if RF is present; PDF 1.3) A dictionary containing a subset of the keys F,
// DOS, Mac, and Unix, corresponding to the entries by those names in the file specifica-
// tion dictionary. The value of each such key is an embedded file stream (see Section
// 3.10.3, “Embedded File Streams”) containing the corresponding file. If this entry is
// present, the Type entry is required and the file specification dictionary must be indi-
// rectly referenced.
EF Dictionary
// (Optional; PDF 1.3) A dictionary with the same structure as the EF dictionary, which
// must also be present. Each key in the RF dictionary must also be present in the EF dic-
// tionary. Each value is a related files array (see “Related Files Arrays” on page 125)
// identifying files that are related to the corresponding file in the EF dictionary. If this
// entry is present, the Type entry is required and the file specification dictionary must
// be indirectly referenced.
RF Dictionary
}
func (FileSpecification) Copy ¶ added in v1.0.55
func (q FileSpecification) Copy(copyRef func(reference Reference) Reference) Object
func (FileSpecification) Equal ¶ added in v1.0.55
func (q FileSpecification) Equal(obj Object) bool
func (FileSpecification) ToRawBytes ¶ added in v1.0.55
func (q FileSpecification) ToRawBytes() []byte
type Filter ¶
type Filter Name
const ( Filter_ASCIIHexDecode Filter = "ASCIIHexDecode" Filter_ASCII85Decode Filter = "ASCII85Decode" Filter_LZWDecode Filter = "LZWDecode" Filter_FlateDecode Filter = "FlateDecode" Filter_RunLengthDecode Filter = "RunLengthDecode" Filter_CCITTFaxDecode Filter = "CCITTFaxDecode" Filter_JBIG2Decode Filter = "JBIG2Decode" Filter_DCTDecode Filter = "DCTDecode" )
func (Filter) ToRawBytes ¶
type Font ¶
type Font struct {
// (Required) The type of font; must be Type1 for a Type 1 font.
Subtype FontSubType
// (Required in PDF 1.0; optional otherwise) The name by which this font is ref-
// erenced in the Font subdictionary of the current resource dictionary.
// Note: This entry is obsolescent and its use is no longer recommended. (See
// implementation note 42 in Appendix H.)
Name Name
// (Required) The PostScript name of the font. For Type 1 fonts, this is usually
// the value of the FontName entry in the font program; for more information,
// see Section 5.2 of the PostScript Language Reference, Third Edition. The Post-
// Script name of the font can be used to find the font’s definition in the viewer
// application or its environment. It is also the name that will be used when
// printing to a PostScript output device.
BaseFont Name
// (Required except for the standard 14 fonts) The first character code defined in
// the font’s Widths array.
FirstChar Int
// (Required except for the standard 14 fonts) The last character code defined in
// the font’s Widths array.
LastChar Int
// (Required except for the standard 14 fonts; indirect reference preferred) An array
// of (LastChar − FirstChar + 1) widths, each element being the glyph width for
// the character whose code is FirstChar plus the array index. For character
// codes outside the range FirstChar to LastChar, the value of MissingWidth from
// the FontDescriptor entry for this font is used. The glyph widths are measured
// in units in which 1000 units corresponds to 1 unit in text space. These widths
// must be consistent with the actual widths given in the font program itself.
// (See implementation note 43 in Appendix H.) For more information on
// glyph widths and other glyph metrics, see Section 5.1.3, “Glyph Positioning
// and Metrics.”
Widths Array
// (Required except for the standard 14 fonts; must be an indirect reference) A font
//descriptor describing the font’s metrics other than its glyph widths (see Sec-
//tion 5.7, “Font Descriptors”).
FontDescriptor Reference
// (Optional) A specification of the font’s character encoding, if different from
// its built-in encoding. The value of Encoding may be either the name of a pre-
// defined encoding (MacRomanEncoding, MacExpertEncoding, or WinAnsi-
// Encoding, as described in Appendix D) or an encoding dictionary that
// specifies differences from the font’s built-in encoding or from a specified pre-
// defined encoding (see Section 5.5.5, “Character Encoding”).
Encoding Object
// (Optional; PDF 1.2) A stream containing a CMap file that maps character
// codes to Unicode values (see Section 5.9, “ToUnicode CMaps”).
ToUnicode Object
}
func (*Font) Read ¶ added in v1.0.5
func (q *Font) Read(dict Dictionary) error
func (Font) ToRawBytes ¶
type FontDescriptor ¶
type FontDescriptor struct {
// (Required) The PostScript name of the font. This should be the same as the
// value of BaseFont in the font or CIDFont dictionary that refers to this font
// descriptor.
FontName Name
// (Required) A collection of flags defining various characteristics of the font
// (see Section 5.7.1, “Font Descriptor Flags”).
Flags Int
// (Required) A rectangle (see Section 3.8.3, “Rectangles”), expressed in the
// glyph coordinate system, specifying the font bounding box. This is the small-
// est rectangle enclosing the shape that would result if all of the glyphs of the
// font were placed with their origins coincident and then filled.
FontBBox Rectangle
// (Required) The angle, expressed in degrees counterclockwise from the verti-
// cal, of the dominant vertical strokes of the font. (For example, the 9-o’clock
// position is 90 degrees, and the 3-o’clock position is –90 degrees.) The value is
// negative for fonts that slope to the right, as almost all italic fonts do.
ItalicAngle Number
// The maximum height above the baseline reached by glyphs in this
// font, excluding the height of glyphs for accented characters.
Ascent Number
// The maximum depth below the baseline reached by glyphs in this
// font. The value is a negative number.
Descent Number
// The desired spacing between baselines of consecutive lines of text.
// Default value: 0.
Leading Number
// The vertical coordinate of the top of flat capital letters, measured
// from the baseline.
CapHeight Number
// (Optional) The font’s x height: the vertical coordinate of the top of flat non-
// ascending lowercase letters (like the letter x), measured from the baseline.
// Default value: 0.
XHeight Number
// (Required) The thickness, measured horizontally, of the dominant vertical
// stems of glyphs in the font.
StemV Number
// (Optional) The thickness, measured invertically, of the dominant horizontal
// stems of glyphs in the font. Default value: 0.
StemH Number
// (Optional) The average width of glyphs in the font. Default value: 0.
AvgWidth Number
// (Optional) The maximum width of glyphs in the font. Default value: 0.
MaxWidth Number
// (Optional) The width to use for character codes whose widths are not speci-
// fied in a font dictionary’s Widths array. This has a predictable effect only if all
// such codes map to glyphs whose actual widths are the same as the Missing-
// Width value. Default value: 0.
MissingWidth Number
// (Optional) A stream containing a Type 1 font program (see Section 5.8,
// “Embedded Font Programs”).
FontFile Reference
// (Optional; PDF 1.1) A stream containing a TrueType font program (see Sec-
// tion 5.8, “Embedded Font Programs”).
FontFile2 Reference
// (Optional; PDF 1.2) A stream containing a font program other than Type 1 or
// TrueType. The format of the font program is specified by the Subtype entry
// in the stream dictionary (see Section 5.8, “Embedded Font Programs,” and
// implementation note 49 in Appendix H).
// At most, only one of the FontFile, FontFile2, and FontFile3 entries may be
// present.
FontFile3 Reference
// (Optional; meaningful only in Type 1 fonts; PDF 1.1) A string listing the char-
// acter names defined in a font subset. The names in this string must be in PDF
// syntax—that is, each name preceded by a slash (/). The names can appear in
// any order. The name .notdef should be omitted; it is assumed to exist in the
// font subset. If this entry is absent, the only indication of a font subset is the
// subset tag in the FontName entry (see Section 5.5.3, “Font Subsets”).
CharSet String
}
func (FontDescriptor) Copy ¶ added in v1.0.5
func (q FontDescriptor) Copy(copyRef func(reference Reference) Reference) Object
func (FontDescriptor) Equal ¶ added in v1.0.49
func (q FontDescriptor) Equal(obj Object) bool
func (*FontDescriptor) Read ¶ added in v1.0.5
func (q *FontDescriptor) Read(dict Dictionary) error
func (FontDescriptor) ToRawBytes ¶
func (q FontDescriptor) ToRawBytes() []byte
type FontSubType ¶
type FontSubType Name
const ( FontSub_Type0 FontSubType = "Type0" FontSub_Type1 FontSubType = "Type1" FontSub_MMType1 FontSubType = "MMType1" FontSub_Type3 FontSubType = "Type3" FontSub_TrueType FontSubType = "TrueType" FontSub_CIDFontType0 FontSubType = "CIDFontType0" FontSub_CIDFontType2 FontSubType = "CIDFontType2" )
func (FontSubType) Copy ¶ added in v1.0.5
func (q FontSubType) Copy(_ func(reference Reference) Reference) Object
func (FontSubType) Equal ¶ added in v1.0.49
func (q FontSubType) Equal(obj Object) bool
func (FontSubType) ToRawBytes ¶
func (q FontSubType) ToRawBytes() []byte
type Form ¶ added in v1.0.25
type Form struct {
Dictionary StreamDictionary
Stream []byte
// (Optional) A code identifying the type of form XObject that this dictionary
// describes. The only valid value defined at the time of publication is 1. Default
// value: 1.
FormType Int
// (Required in PDF 1.0; optional otherwise) The name by which this form
// XObject is referenced in the XObject subdictionary of the current resource
// dictionary (see Section 3.7.2, “Resource Dictionaries”).
// Note: This entry is obsolescent and its use is no longer recommended. (See
// implementation note 38 in Appendix H.)
Name Name
// (Required if PieceInfo is present; optional otherwise; PDF 1.3) The date and
// time (see Section 3.8.2, “Dates”) when the form XObject’s contents were
// most recently modified. If a page-piece dictionary (PieceInfo) is present, the
// modification date is used to ascertain which of the application data diction-
// aries it contains correspond to the current content of the form (see Section
// 9.4, “Page-Piece Dictionaries”).
LastModified Date
// (Required) An array of four numbers in the form coordinate system (see
// below), giving the coordinates of the left, bottom, right, and top edges,
// respectively, of the form XObject’s bounding box. These boundaries are used
// to clip the form XObject and to determine its size for caching.
BBox Rectangle
// (Optional) An array of six numbers specifying the form matrix, which maps
// form space into user space (see Section 4.2.3, “Transformation Matrices”).
// Default value: the identity matrix [1 0 0 1 0 0].
Matrix Array
// (Optional but strongly recommended; PDF 1.2) A dictionary specifying any
// resources (such as fonts and images) required by the form XObject (see Sec-
// tion 3.7, “Content Streams and Resources”).
// In PDF 1.1 and earlier, all named resources used in the form XObject must be
// included in the resource dictionary of each page object on which the form
// XObject appears, whether or not they also appear in the resource dictionary
// of the form XObject itself. It can be useful to specify these resources in the
// form XObject’s own resource dictionary as well, in order to determine which
// resources are used inside the form XObject. If a resource is included in both
// dictionaries, it should have the same name in both locations.In PDF 1.2 and later versions, form XObjects can be independent of the
// content streams in which they appear, and this is strongly recommended
// although not required. In an independent form XObject, the resource dic-
// tionary of the form XObject is required and contains all named resources
// used by the form XObject. These resources are not “promoted” to the outer
// content stream’s resource dictionary, although that stream’s resource diction-
// ary will refer to the form XObject itself.
Resources Object
// (Optional; PDF 1.4) A group attributes dictionary indicating that the contents
// of the form XObject are to be treated as a group and specifying the attributes
// of that group (see Section 4.9.2, “Group XObjects”).
// Note: If a Ref entry (see below) is present, the group attributes also apply to the
// external page imported by that entry. This allows such an imported page to be
// treated as a group without further modification.
// Ref dictionary (Optional; PDF 1.4) A reference dictionary identifying a page to be imported
// from another PDF file, and for which the form XObject serves as a proxy (see
// Section 4.9.3, “Reference XObjects”).
Group Object
// (Optional; PDF 1.4) A metadata stream containing metadata for the form
// XObject (see Section 9.2.2, “Metadata Streams”).
Metadata Object
// (Optional; PDF 1.3) A page-piece dictionary associated with the form
// XObject (see Section 9.4, “Page-Piece Dictionaries”).
PieceInfo Object
// (Required if the form XObject is a structural content item; PDF 1.3) The integer
// key of the form XObject’s entry in the structural parent tree (see “Finding
// Structure Elements from Content Items” on page 600).
StructParent Int
// (Required if the form XObject contains marked-content sequences that are struc-
// tural content items; PDF 1.3) The integer key of the form XObject’s entry in
// the structural parent tree (see “Finding Structure Elements from Content
// Items” on page 600).
// Note: At most one of the entries StructParent or StructParents may be present. A
// form XObject can be either a content item in its entirety or a container for
// marked-content sequences that are content items, but not both.
StructParents Int
// (Optional; PDF 1.2) An OPI version dictionary for the form XObject (see
//Section 9.10.6, “Open Prepress Interface (OPI)”).
OPI Object
}
func (Form) ToRawBytes ¶ added in v1.0.25
type Function ¶
type Function struct {
// (Required) The function type:
// 0 Sampled function
// 2 Exponential interpolation function
// 3 Stitching function
// 4 PostScript calculator function
FunctionType Int
// (Required) An array of 2 ◊ m numbers, where m is the number of input
// values. For each i from 0 to m − 1, Domain2i must be less than or equal to
// Domain2i+1 , and the ith input value, x i, must lie in the interval
// Domain2i ≤ x i ≤ Domain2i+1 . Input values outside the declared domain are
// clipped to the nearest boundary value.
Domain Array
// (Required for type 0 and type 4 functions, optional otherwise; see below) An
// array of 2 ◊ n numbers, where n is the number of output values. For each j
// from 0 to n − 1, Range2j must be less than or equal to Range2j+1 , and the jth
// output value, y j , must lie in the interval Range2j ≤ y j ≤ Range2j+1 . Output
// values outside the declared range are clipped to the nearest boundary value.
// If this entry is absent, no clipping is done
Range Array
}
func (Function) ToRawBytes ¶ added in v1.0.49
type GraphicsState ¶
type GraphicsState struct {
// (Optional; PDF 1.3) The line width (see “Line Width” on page 152).
W Number
// (Optional; PDF 1.3) The line cap style (see “Line Cap Style” on page 153).
LC Int
// (Optional; PDF 1.3) The line join style (see “Line Join Style” on page 153).
LJ Int
// (Optional; PDF 1.3) The miter limit (see “Miter Limit” on page 153).
ML Number
// (Optional; PDF 1.3) The line dash pattern, expressed as an array of the form
// [dashArray dashPhase], where dashArray is itself an array and dashPhase is an
// integer (see “Line Dash Pattern” on page 155).
D Array
// (Optional; PDF 1.3) The name of the rendering intent (see “Rendering
// Intents” on page 197).
RI Number
// (Optional) A flag specifying whether to apply overprint (see Section 4.5.6,
// “Overprint Control”). In PDF 1.2 and earlier, there is a single overprint
// parameter that applies to all painting operations. Beginning with PDF 1.3,
// there are two separate overprint parameters: one for stroking and one for all
// other painting operations. Specifying an OP entry sets both parameters un-
// less there is also an op entry in the same graphics state parameter dictionary,
// in which case the OP entry sets only the overprint parameter for stroking.
OP Boolean
// (Optional; PDF 1.3) A flag specifying whether to apply overprint (see Section
// 4.5.6, “Overprint Control”) for painting operations other than stroking. If
// this entry is absent, the OP entry, if any, sets this parameter.
Op Boolean
// (Optional; PDF 1.3) The overprint mode (see Section 4.5.6, “Overprint Control”).
OPM Int
// (Optional; PDF 1.3) An array of the form [font size], where font is an indirect
// reference to a font dictionary and size is a number expressed in text space
// units. These two objects correspond to the operands of the Tf operator (see
// Section 5.2, “Text State Parameters and Operators”); however, the first oper-
// and is an indirect object reference instead of a resource name.
// BG function (Optional) The black-generation function, which maps the interval [0.0 1.0]
// to the interval [0.0 1.0] (see Section 6.2.3, “Conversion from DeviceRGB to
// DeviceCMYK”).
Font Array
// (Optional; PDF 1.3) Same as BG except that the value may also be the name
// Default, denoting the black-generation function that was in effect at the start
// of the page. If both BG and BG2 are present in the same graphics state param-
// eter dictionary, BG2 takes precedence.
BG2 Object
// (Optional) The undercolor-removal function, which maps the interval
// [0.0 1.0] to the interval [−1.0 1.0] (see Section 6.2.3, “Conversion from
// DeviceRGB to DeviceCMYK”).
UCR Function
// (Optional; PDF 1.3) Same as UCR except that the value may also be the name
// Default, denoting the undercolor-removal function that was in effect at the
// start of the page. If both UCR and UCR2 are present in the same graphics state
// parameter dictionary, UCR2 takes precedence.
UCR2 Object
// (Optional) The transfer function, which maps the interval [0.0 1.0] to the
// or name interval [0.0 1.0] (see Section 6.3, “Transfer Functions”). The value is either
// a single function (which applies to all process colorants) or an array of four
// functions (which apply to the process colorants individually). The name
// Identity may be used to represent the identity function.
// Graphics StateS E C T I O N 4 . 3 159
TR Object
// (Optional; PDF 1.3) Same as TR except that the value may also be the name
// or name Default, denoting the transfer function that was in effect at the start of the
// page. If both TR and TR2 are present in the same graphics state parameter dic-
// tionary, TR2 takes precedence.
TR2 Object
// (Optional) The halftone dictionary or stream (see Section 6.4, “Halftones”)
// stream, or name or the name Default, denoting the halftone that was in effect at the start of the
// page.
HT Dictionary
// (Optional; PDF 1.3) The flatness tolerance (see Section 6.5.1, “Flatness Tolerance”).
FL Number
// (Optional; PDF 1.3) The smoothness tolerance (see Section 6.5.2, “Smooth-
// ness Tolerance”).
SM Number
// (Optional) A flag specifying whether to apply automatic stroke adjustment
// (see Section 6.5.4, “Automatic Stroke Adjustment”).
SA Boolean
// (Optional; PDF 1.4) The current blend mode to be used in the transparent
// imaging model (see Sections 7.2.4, “Blend Mode,” and 7.5.2, “Specifying
// Blending Color Space and Blend Mode”).
BM Object
// (Optional; PDF 1.4) The current soft mask, specifying the mask shape or
// mask opacity values to be used in the transparent imaging model (see
// “Source Shape and Opacity” on page 421 and “Mask Shape and Opacity” on
// page 443).
// Note: Although the current soft mask is sometimes referred to as a “soft clip,”
// altering it with the gs operator completely replaces the old value with the new
// one, rather than intersecting the two as is done with the current clipping path
// parameter (see Section 4.4.3, “Clipping Path Operators”).
SMask Object
// (Optional; PDF 1.4) The current stroking alpha constant, specifying the con-
// stant shape or constant opacity value to be used for stroking operations in the
// transparent imaging model (see “Source Shape and Opacity” on page 421
// and “Constant Shape and Opacity” on page 444).
CA Number
// (Optional; PDF 1.4) Same as CA, but for nonstroking operations.
Ca Number
// (Optional; PDF 1.4) The alpha source flag (“alpha is shape”), specifying
// whether the current soft mask and alpha constant are to be interpreted as
// shape values (true) or opacity values (false).
AIS Boolean
// (Optional; PDF 1.4) The text knockout flag, which determines the behavior
// of overlapping glyphs within a text object in the transparent imaging model
// (see Section 5.2.7, “Text Knockout”
TK Boolean
}
func (GraphicsState) Copy ¶ added in v1.0.49
func (q GraphicsState) Copy(copyRef func(reference Reference) Reference) Object
func (GraphicsState) Equal ¶ added in v1.0.49
func (q GraphicsState) Equal(obj Object) bool
func (GraphicsState) ToRawBytes ¶
func (q GraphicsState) ToRawBytes() []byte
type Image ¶
type Image struct {
Dictionary StreamDictionary
Stream []byte
// (Required) The width of the image, in samples.
Width Int
// (Required) The height of the image, in samples.
Height Int
// (Required except for image masks; not allowed for image masks) The color
// space in which image samples are specified. This may be any type of color
// space except Pattern.
ColorSpace Object
// (Required except for image masks; optional for image masks) The number of
// bits used to represent each color component. Only a single value may be
// specified; the number of bits is the same for all color components. Valid
// values are 1, 2, 4, and 8. If ImageMask is true, this entry is optional, and if
// specified, its value must be 1.
// If the image stream uses a filter, the value of BitsPerComponent must be
// consistent with the size of the data samples that the filter delivers. In par-
// ticular, a CCITTFaxDecode or JBIG2Decode filter always delivers 1-bit sam-
// ples, a RunLengthDecode or DCTDecode filter delivers 8-bit samples, and
// an LZWDecode or FlateDecode filter delivers samples of a specified size if
// a predictor function is used.
BitsPerComponent Int
// (Optional; PDF 1.1) The name of a color rendering intent to be used in
//rendering the image (see “Rendering Intents” on page 197). Default value:
//the current rendering intent in the graphics state.
Intent Name
// (Optional) A flag indicating whether the image is to be treated as an image
//mask (see Section 4.8.5, “Masked Images”). If this flag is true, the value of
//BitsPerComponent must be 1 and Mask and ColorSpace should not be
//specified; unmasked areas will be painted using the current nonstroking
//color. Default value: false.
ImageMask Boolean
// (Optional except for image masks; not allowed for image masks; PDF 1.3) An
// image XObject defining an image mask to be applied to this image (see
// “Explicit Masking” on page 277), or an array specifying a range of colors
// to be applied to it as a color key mask (see “Color Key Masking” on page
// 277). If ImageMask is true, this entry must not be present. (See
// implementation note 35 in Appendix H.)
Mask Object
// (Optional; PDF 1.4) A subsidiary image XObject defining a soft-mask
// image (see “Soft-Mask Images” on page 447) to be used as a source of
// mask shape or mask opacity values in the transparent imaging model. The
// alpha source parameter in the graphics state determines whether the mask
// values are interpreted as shape or opacity.
// If present, this entry overrides the current soft mask in the graphics state,
// as well as the image’s Mask entry, if any. (However, the other transparency-
// related graphics state parameters—blend mode and alpha constant—
// remain in effect.) If SMask is absent, the image has no associated soft mask
// (although the current soft mask in the graphics state may still apply).
SMask Object
// (Optional) An array of numbers describing how to map image samples
// into the range of values appropriate for the image’s color space (see
// “Decode Arrays” on page 271). If ImageMask is true, the array must be
// either [0 1] or [1 0]; otherwise, its length must be twice the number of
// color components required by ColorSpace. Default value: see “Decode
// Arrays” on page 271.
Decode Array
// (Optional) A flag indicating whether image interpolation is to be per-
//formed (see “Image Interpolation” on page 273). Default value: false.
Interpolate Boolean
// (Optional; PDF 1.3) An array of alternate image dictionaries for this image
// (see “Alternate Images” on page 273). The order of elements within the
// array has no significance. This entry may not be present in an image
// XObject that is itself an alternate image.
Alternates Array
// (Required in PDF 1.0; optional otherwise) The name by which this image
// XObject is referenced in the XObject subdictionary of the current resource
// dictionary (see Section 3.7.2, “Resource Dictionaries”).
// Note: This entry is obsolescent and its use is no longer recommended. (See
// implementation note 36 in Appendix H.)
Name Name
// (Required if the image is a structural content item; PDF 1.3) The integer key
// of the image’s entry in the structural parent tree (see “Finding Structure
// Elements from Content Items” on page 600).
StructParent Int
// (Optional; PDF 1.3; indirect reference preferred) The digital identifier of the
//image’s parent Web Capture content set (see Section 9.9.5, “Object At-
//tributes Related to Web Capture”).
ID String
// (Optional; PDF 1.2) An OPI version dictionary for the image (see Section
// 9.10.6, “Open Prepress Interface (OPI)”). If ImageMask is true, this entry
// is ignored.
OPI Object
// (Optional; PDF 1.4) A metadata stream containing metadata for the image
// (see Section 9.2.2, “Metadata Streams”).
Metadata Object
}
func (*Image) Read ¶ added in v1.0.5
func (q *Image) Read(dict Dictionary) error
func (Image) ToRawBytes ¶
type IndirectObject ¶
type InformationDictionary ¶
type InformationDictionary struct {
// (Optional; PDF 1.1) The document’s title.
Title String
// (Optional) The name of the person who created the document.
Author String
// (Optional; PDF 1.1) The subject of the document.
Subject String
// (Optional; PDF 1.1) Keywords associated with the document.
Keywords String
// (Optional) If the document was converted to PDF from another format, the
// name of the application (for example, Adobe FrameMaker®) that created the
// original document from which it was converted.
Creator String
// (Optional) If the document was converted to PDF from another format, the
// name of the application (for example, Acrobat Distiller) that converted it to
// PDF.
Producer String
// (Optional) The date and time the document was created, in human-readable
// form (see Section 3.8.2, “Dates”).
CreationDate Date
// (Optional; PDF 1.1) The date and time the document was most recently
// modified, in human-readable form (see Section 3.8.2, “Dates”).
ModDate Date
// (Optional; PDF 1.3) A name object indicating whether the document has
// been modified to include trapping information (see Section 9.10.5, “Trap-
// ping Support”):
Trapped Name
}
func (InformationDictionary) Copy ¶ added in v1.0.49
func (q InformationDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (InformationDictionary) Equal ¶ added in v1.0.49
func (q InformationDictionary) Equal(obj Object) bool
func (*InformationDictionary) Read ¶ added in v1.0.7
func (q *InformationDictionary) Read(dict Dictionary) error
func (InformationDictionary) ToRawBytes ¶
func (q InformationDictionary) ToRawBytes() []byte
type NameDictionary ¶
type NameDictionary struct {
// (Optional; PDF 1.2) A name tree mapping name strings to destinations (see
// “Named Destinations” on page 476).
Dests Object
// (Optional; PDF 1.3) A name tree mapping name strings to annotation
// appearance streams (see Section 8.4.4, “Appearance Streams”).
AP Object
// (Optional; PDF 1.3) A name tree mapping name strings to document-level
// JavaScript® actions (see “JavaScript Actions” on page 556).
JavaScript Object
// (Optional; PDF 1.3) A name tree mapping name strings to visible pages for
// use in interactive forms (see Section 8.6.5, “Named Pages”).
Pages Object
// (Optional; PDF 1.3) A name tree mapping name strings to invisible (tem-
// plate) pages for use in interactive forms (see Section 8.6.5, “Named Pages”).
Templates Object
// (Optional; PDF 1.3) A name tree mapping digital identifiers to Web Capture
// content sets (see Section 9.9.3, “Content Sets”).
IDS Object
// (Optional; PDF 1.3) A name tree mapping uniform resource locators (URLs)
// to Web Capture content sets (see Section 9.9.3, “Content Sets”).
URLS Object
// (Optional; PDF 1.4) A name tree mapping name strings to embedded file
// streams (see Section 3.10.3, “Embedded File Streams”).
EmbeddedFiles Object
}
func (NameDictionary) Copy ¶ added in v1.0.5
func (q NameDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (NameDictionary) Equal ¶ added in v1.0.49
func (q NameDictionary) Equal(obj Object) bool
func (NameDictionary) ToRawBytes ¶
func (q NameDictionary) ToRawBytes() []byte
type NameTree ¶
type NameTree struct {
// (Root and intermediate nodes only; required in intermediate nodes; present in the root node
// if and only if Names is not present) An array of indirect references to the immediate chil-
// dren of this node. The children may be intermediate or leaf nodes.
Kids Array
// (Root and leaf nodes only; required in leaf nodes; present in the root node if and only if Kids
// is not present) An array of the form
// [key1 value1 key2 value2 ... keyn valuen]
// where each keyi is a string and the corresponding valuei is an indirect reference to the
// object associated with that key. The keys are sorted in lexical order, as described below.
Names Array
// (Intermediate and leaf nodes only; required) An array of two strings, specifying the (lexi-
// cally) least and greatest keys included in the Names array of a leaf node or in the Names
// arrays of any leaf nodes that are descendants of an intermediate node.
Limits Array
}
func (NameTree) ToRawBytes ¶
type NumberTree ¶
type NumberTree struct {
// (Root and intermediate nodes only; required in intermediate nodes; present in the root node
// if and only if Names is not present) An array of indirect references to the immediate chil-
// dren of this node. The children may be intermediate or leaf nodes.
Kids Array
// (Root and leaf nodes only; required in leaf nodes; present in the root node if and only if Kids
// is not present) An array of the form
// [key1 value1 key2 value2 ... keyn valuen]
// where each keyi is a string and the corresponding valuei is an indirect reference to the
// object associated with that key. The keys are sorted in lexical order, as described below.
Names Array
// (Intermediate and leaf nodes only; required) An array of two strings, specifying the (lexi-
// cally) least and greatest keys included in the Names array of a leaf node or in the Names
// arrays of any leaf nodes that are descendants of an intermediate node.
Limits Array
}
func (NumberTree) Copy ¶ added in v1.0.5
func (q NumberTree) Copy(copyRef func(reference Reference) Reference) Object
func (NumberTree) Equal ¶ added in v1.0.49
func (q NumberTree) Equal(obj Object) bool
func (NumberTree) ToRawBytes ¶
func (q NumberTree) ToRawBytes() []byte
type ObjectStreamDictionary ¶ added in v1.0.56
type ObjectStreamDictionary struct {
StreamDictionary
// (Required) The number of compressed objects in the stream.
N Int
// (Required) The byte offset (in the decoded stream) of the first compressed object.
First Int
// (Optional) A reference to an object stream, of which the current object stream is
// considered an extension. Both streams are considered part of a collection of object
// streams (see below). A given collection consists of a set of streams whose Extends
// links form a directed acyclic graph.
Extends Reference
}
func (ObjectStreamDictionary) Copy ¶ added in v1.0.56
func (q ObjectStreamDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (ObjectStreamDictionary) Equal ¶ added in v1.0.56
func (q ObjectStreamDictionary) Equal(obj Object) bool
func (*ObjectStreamDictionary) Read ¶ added in v1.0.56
func (q *ObjectStreamDictionary) Read(dict Dictionary) error
func (ObjectStreamDictionary) ToRawBytes ¶ added in v1.0.56
func (q ObjectStreamDictionary) ToRawBytes() []byte
type Page ¶
type Page struct {
// (Required; must be an indirect reference) The page tree node that is the im-
// mediate parent of this page object.
Parent Reference
// Required if PieceInfo is present; optional otherwise; PDF 1.3) The date and
// time (see Section 3.8.2, “Dates”) when the page’s contents were most re-
// cently modified. If a page-piece dictionary (PieceInfo) is present, the
// modification date is used to ascertain which of the application data dic-
// tionaries that it contains correspond to the current content of the page
// (see Section 9.4, “Page-Piece Dictionaries”).
LastModified Date
// (Required; inheritable) A dictionary containing any resources required by
// the page (see Section 3.7.2, “Resource Dictionaries”). If the page requires
// no resources, the value of this entry should be an empty dictionary; omit-
// ting the entry entirely indicates that the resources are to be inherited from
// an ancestor node in the page tree.
Resources Object
// (Required; inheritable) A rectangle (see Section 3.8.3, “Rectangles”), ex-
// pressed in default user space units, defining the boundaries of the physical
// medium on which the page is intended to be displayed or printed (see
// Section 9.10.1, “Page Boundaries”).
MediaBox Rectangle
// (Optional; inheritable) A rectangle, expressed in default user space units,
// defining the visible region of default user space. When the page is dis-
// played or printed, its contents are to be clipped (cropped) to this rectangle
// and then imposed on the output medium in some implementation-
// defined manner (see Section 9.10.1, “Page Boundaries”). Default value:
// the value of MediaBox.
CropBox Object
// (Optional; PDF 1.3) A rectangle, expressed in default user space units, de-
// fining the region to which the contents of the page should be clipped
// when output in a production environment (see Section 9.10.1, “Page
// Boundaries”). Default value: the value of CropBox.
BleedBox Object
// (Optional; PDF 1.3) A rectangle, expressed in default user space units, de-
// fining the intended dimensions of the finished page after trimming (see
// Section 9.10.1, “Page Boundaries”). Default value: the value of CropBox.
TrimBox Object
// (Optional; PDF 1.3) A rectangle, expressed in default user space units, de-
// fining the extent of the page’s meaningful content (including potential
// white space) as intended by the page’s creator (see Section 9.10.1, “Page
// Boundaries”). Default value: the value of CropBox.
ArtBox Object
// (Optional) A box color information dictionary specifying the colors and
// other visual characteristics to be used in displaying guidelines on the
// screen for the various page boundaries (see “Display of Page Boundaries”
// on page 679). If this entry is absent, the viewer application should use its
// own current default settings.
BoxColorInfo Object
// (Optional) A content stream (see Section 3.7.1, “Content Streams”) de-
// scribing the contents of this page. If this entry is absent, the page is empty.
// The value may be either a single stream or an array of streams. If it is an
// array, the effect is as if all of the streams in the array were concatenated, in
// order, to form a single stream. This allows a program generating a PDF
// file to create image objects and other resources as they occur, even though
// they interrupt the content stream. The division between streams may
// occur only at the boundaries between lexical tokens (see Section 3.1, “Lex-
// ical Conventions”), but is unrelated to the page’s logical content or orga-
// nization. Applications that consume or produce PDF files are not required
// to preserve the existing structure of the Contents array. (See implementa-
// tion note 22 in Appendix H.)
Contents Object
// (Optional; inheritable) The number of degrees by which the page should
// be rotated clockwise when displayed or printed. The value must be a mul-
// tiple of 90. Default value: 0.
Rotate Int
// (Optional; PDF 1.4) A group attributes dictionary specifying the attributes
//of the page’s page group for use in the transparent imaging model (see
//Sections 7.3.6, “Page Group,” and 7.5.5, “Transparency Group XObjects”).
Group Object
// (Optional) A stream object defining the page’s thumbnail image (see Sec-
// tion 8.2.3, “Thumbnail Images”).
Thumb Object
// (Optional; PDF 1.1; recommended if the page contains article beads) An ar-
// ray of indirect references to article beads appearing on the page (see Sec-
// tion 8.3.2, “Articles”; see also implementation note 23 in Appendix H).
// The beads are listed in the array in natural reading order.
B Array
// (Optional; PDF 1.1) The page’s display duration (also called its advance
// timing): the maximum length of time, in seconds, that the page will be
// displayed during presentations before the viewer application automati-
// cally advances to the next page (see Section 8.3.3, “Presentations”). By
// default, the viewer does not advance automatically.
Dur Number
// (Optional; PDF 1.1) A transition dictionary describing the transition effect
// to be used when displaying the page during presentations (see Section
// 8.3.3, “Presentations”).
Trans Object
// (Optional) An array of annotation dictionaries representing annotations
// associated with the page (see Section 8.4, “Annotations”).
Annots Array
// (Optional; PDF 1.2) An additional-actions dictionary defining actions to
// be performed when the page is opened or closed (see Section 8.5.2, “Trig-
// ger Events”; see also implementation note 24 in Appendix H).
AA Object
// (Optional; PDF 1.4) A metadata stream containing metadata for the page
// (see Section 9.2.2, “Metadata Streams”).
Metadata Object
// (Optional; PDF 1.3) A page-piece dictionary associated with the page (see
// Section 9.4, “Page-Piece Dictionaries”).
PieceInfo Object
// (Required if the page contains structural content items; PDF 1.3) The inte-
// ger key of the page’s entry in the structural parent tree (see “Finding Struc-
// ture Elements from Content Items” on page 600).
StructParents Int
// (Optional; PDF 1.3; indirect reference preferred) The digital identifier of the
// page’s parent Web Capture content set (see Section 9.9.5, “Object At-
// tributes Related to Web Capture”).
ID String
// (Optional; PDF 1.3) The page’s preferred zoom (magnification) factor: the
// factor by which it should be scaled to achieve the “natural” display magni-
// fication (see Section 9.9.5, “Object Attributes Related to Web Capture”).
PZ Number
// (Optional; PDF 1.3) A separation dictionary containing information need-
// ed to generate color separations for the page (see Section 9.10.3, “Separa-
// tion Dictionaries”).
SeparationInfo Object
}
func (*Page) Read ¶ added in v1.0.5
func (q *Page) Read(dict Dictionary) error
func (Page) ToRawBytes ¶
type PageTreeNode ¶
type PageTreeNode struct {
// (Required except in root node; must be an indirect reference) The page tree node that
// is the immediate parent of this one.
Parent Reference
// (Required) An array of indirect references to the immediate children of this node.
// The children may be page objects or other page tree nodes.
Kids []Reference
// (Required) The number of leaf nodes (page objects) that are descendants of this
// node within the page tree.
Count Int
}
func (PageTreeNode) Copy ¶ added in v1.0.49
func (q PageTreeNode) Copy(copyRef func(reference Reference) Reference) Object
func (PageTreeNode) Equal ¶ added in v1.0.49
func (q PageTreeNode) Equal(obj Object) bool
func (*PageTreeNode) Read ¶ added in v1.0.5
func (q *PageTreeNode) Read(dict Dictionary) error
func (PageTreeNode) ToRawBytes ¶
func (q PageTreeNode) ToRawBytes() []byte
type ProcedureSet ¶
type ProcedureSet Name
const ( ProcSetPDF ProcedureSet = "PDF" ProcSetText ProcedureSet = "Text" ProcSetImageB ProcedureSet = "ImageB" ProcSetImageC ProcedureSet = "ImageC" ProcSetImageI ProcedureSet = "ImageI" )
func (ProcedureSet) Copy ¶ added in v1.0.5
func (q ProcedureSet) Copy(_ func(reference Reference) Reference) Object
func (ProcedureSet) Equal ¶ added in v1.0.49
func (q ProcedureSet) Equal(obj Object) bool
func (ProcedureSet) ToRawBytes ¶
func (q ProcedureSet) ToRawBytes() []byte
type RawIndirectObject ¶
func (RawIndirectObject) ToRawBytes ¶
func (q RawIndirectObject) ToRawBytes() []byte
type RenderingMode ¶
type RenderingMode int
const ( RenderingModeFill RenderingMode = 0 RenderingModeStroke RenderingMode = 1 RenderingModeFillAndStroke RenderingMode = 2 RenderingModeNeither RenderingMode = 3 RenderingModeFillAndClip RenderingMode = 4 RenderingModeStrokeAndClip RenderingMode = 5 RenderingModeFillAndStrokeAndClip RenderingMode = 6 RenderingModeClip RenderingMode = 7 )
type ResourceDictionary ¶
type ResourceDictionary struct {
// (Optional) A dictionary mapping resource names to graphics state parameter
// dictionaries (see Section 4.3.4, “Graphics State Parameter Dictionaries”).
ExtGState Object
// (Optional) A dictionary mapping each resource name to either the name of a
// device-dependent color space or an array describing a color space (see Sec-
// tion 4.5, “Color Spaces”).
ColorSpace Object
// (Optional) A dictionary mapping resource names to pattern objects (see Sec-
// tion 4.6, “Patterns”).
Pattern Object
// (Optional; PDF 1.3) A dictionary mapping resource names to shading dic-
// tionaries (see “Shading Dictionaries” on page 233).
Shading Object
// (Optional) A dictionary mapping resource names to external objects (see Sec-
// tion 4.7, “External Objects”)
XObject Object
// (Optional) A dictionary mapping resource names to font dictionaries (see
// Chapter 5).
Font Object
// (Optional) An array of predefined procedure set names (see Section 9.1,
// “Procedure Sets”).
ProcSet Object
// (Optional; PDF 1.2) A dictionary mapping resource names to property list
// dictionaries for marked content (see Section 9.5.1, “Property Lists”).
Properties Object
}
func (ResourceDictionary) Copy ¶ added in v1.0.25
func (q ResourceDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (ResourceDictionary) Equal ¶ added in v1.0.49
func (q ResourceDictionary) Equal(obj Object) bool
func (*ResourceDictionary) Read ¶ added in v1.0.5
func (q *ResourceDictionary) Read(dict Dictionary) error
func (ResourceDictionary) ToRawBytes ¶
func (q ResourceDictionary) ToRawBytes() []byte
type StandardFont ¶
type StandardFont struct {
// Type
// Subtype FontSubType // Required
BaseFont StandardFontName // Required
Encoding Encoding // Name or dictionary, Optional
}
func (StandardFont) Copy ¶ added in v1.0.5
func (q StandardFont) Copy(copyRef func(reference Reference) Reference) Object
func (StandardFont) Equal ¶ added in v1.0.49
func (q StandardFont) Equal(obj Object) bool
func (StandardFont) Metrics ¶
func (q StandardFont) Metrics() (*afm.Font, error)
Metrics returns font metrics from the embedded afm files
func (*StandardFont) Read ¶ added in v1.0.13
func (q *StandardFont) Read(dict Dictionary) error
func (StandardFont) ToRawBytes ¶
func (q StandardFont) ToRawBytes() []byte
type StandardFontName ¶
type StandardFontName Name
const ( StandardFont_Helvetica StandardFontName = "Helvetica" StandardFont_HelveticaBold StandardFontName = "Helvetica-Bold" StandardFont_HelveticaOblique StandardFontName = "Helvetica-Oblique" StandardFont_HelveticaBoldOblique StandardFontName = "Helvetica-BoldOblique" StandardFont_TimesRoman StandardFontName = "Times-Roman" StandardFont_TimesBold StandardFontName = "Times-Bold" StandardFont_TimesItalic StandardFontName = "Times-Italic" StandardFont_TimesBoldItalic StandardFontName = "Times-BoldItalic" StandardFont_Courier StandardFontName = "Courier" StandardFont_CourierBold StandardFontName = "Courier-Bold" StandardFont_CourierOblique StandardFontName = "Courier-Oblique" StandardFont_CourierBoldOblique StandardFontName = "Courier-BoldOblique" StandardFont_Symbol StandardFontName = "Symbol" StandardFont_ZapfDingbats StandardFontName = "ZapfDingbats" )
func (StandardFontName) Copy ¶ added in v1.0.5
func (q StandardFontName) Copy(_ func(reference Reference) Reference) Object
func (StandardFontName) Equal ¶ added in v1.0.49
func (q StandardFontName) Equal(obj Object) bool
func (StandardFontName) ToRawBytes ¶
func (q StandardFontName) ToRawBytes() []byte
type StandardSecurityHandler ¶
type StandardSecurityHandler struct {
EncryptionDictionary
// (Required) A number specifying which revision of the standard security handler should
// be used to interpret this dictionary. The revision number should be 2 if the document is
// encrypted with a V value less than 2 (see Table 3.13) and does not have any of the access
// permissions set (via the P entry, below) that are designated “Revision 3” in Table 3.15;
// otherwise (that is, if the document is encrypted with a V value greater than 2 or has any
// “Revision 3” access permissions set), this value should be 3.
R Number
// (Required) A 32-byte string, based on both the owner and user passwords, that is used in
// computing the encryption key and in determining whether a valid owner password was
// entered. For more information, see “Encryption Key Algorithm” on page 78 and “Pass-
// word Algorithms” on page 79.
O String
// (Required) A 32-byte string, based on the user password, that is used in determining
// whether to prompt the user for a password and, if so, whether a valid user or owner pass-
// word was entered. For more information, see “Password Algorithms” on page 79.
U String
// (Required) A set of flags specifying which operations are permitted when the document is
// opened with user access (see Table 3.15).
P Int
}
func (StandardSecurityHandler) Copy ¶ added in v1.0.49
func (q StandardSecurityHandler) Copy(copyRef func(reference Reference) Reference) Object
func (StandardSecurityHandler) Equal ¶ added in v1.0.49
func (q StandardSecurityHandler) Equal(obj Object) bool
func (StandardSecurityHandler) ToRawBytes ¶
func (q StandardSecurityHandler) ToRawBytes() []byte
type StreamDictionary ¶ added in v1.0.5
type StreamDictionary struct {
// (Required) The number of bytes from the beginning of the line fol-
// lowing the keyword stream to the last byte just before the keyword
// endstream. (There may be an additional EOL marker, preceding
// endstream, that is not included in the count and is not logically part
// of the stream data.) See “Stream Extent,” above, for further discus-
// sion.
Length int
// (Optional) The name of a filter to be applied in processing the stream
// data found between the keywords stream and endstream, or an array
// of such names. Multiple filters should be specified in the order in
// which they are to be applied.
Filter []Filter // name or array
// (Optional) A parameter dictionary, or an array of such dictionaries,
// used by the filters specified by Filter. If there is only one filter and that
// filter has parameters, DecodeParms must be set to the filter’s parame-
// ter dictionary unless all the filter’s parameters have their default
// values, in which case the DecodeParms entry may be omitted. If there
// are multiple filters and any of the filters has parameters set to non-
// default values, DecodeParms must be an array with one entry for
// each filter: either the parameter dictionary for that filter, or the null
// object if that filter has no parameters (or if all of its parameters have
// their default values). If none of the filters have parameters, or if all
// their parameters have default values, the DecodeParms entry may be
// omitted. (See implementation note 7 in Appendix H.)
DecodeParms Object // dictionary or array
// (Optional; PDF 1.2) The file containing the stream data. If this entry
// is present, the bytes between stream and endstream are ignored, the
// filters are specified by FFilter rather than Filter, and the filter parame-
// ters are specified by FDecodeParms rather than DecodeParms. How-
// ever, the Length entry should still specify the number of those bytes.
// (Usually there are no bytes and Length is 0.)
F Object // file specification
// (Optional; PDF 1.2) The name of a filter to be applied in processing
// the data found in the stream’s external file, or an array of such names.
// The same rules apply as for Filter.
FFilter []Filter // name or array
// (Optional; PDF 1.2) A parameter dictionary, or an array of such dic-
// tionaries, used by the filters specified by FFilter. The same rules apply
// as for DecodeParms.
FDecodeParms Object // dictionary or array
}
func (StreamDictionary) Copy ¶ added in v1.0.5
func (q StreamDictionary) Copy(copyRef func(reference Reference) Reference) Object
func (StreamDictionary) Equal ¶ added in v1.0.49
func (q StreamDictionary) Equal(obj Object) bool
func (*StreamDictionary) Read ¶ added in v1.0.5
func (q *StreamDictionary) Read(dict Dictionary) error
func (StreamDictionary) ToRawBytes ¶ added in v1.0.5
func (q StreamDictionary) ToRawBytes() []byte
type StreamFont ¶
type StreamFont struct {
Dictionary Dictionary
Stream []byte
// (Required for Type 1 and TrueType fonts) The length in bytes of the clear-text portion
// of the Type 1 font program (see below), or the entire TrueType font program, after it
// has been decoded using the filters specified by the stream’s Filter entry, if any.
Length1 Int
// (Required for Type 1 fonts) The length in bytes of the encrypted portion of the Type 1
// font program (see below) after it has been decoded using the filters specified by the
// stream’s Filter entry.
Length2 Int
// (Required for Type 1 fonts) The length in bytes of the fixed-content portion of the
// Type 1 font program (see below), after it has been decoded using the filters specified
// by the stream’s Filter entry. If Length3 is 0, it indicates that the 512 zeros and clearto-
// mark have not been included in the FontFile font program and must be added.
Length3 Int
// (Required if referenced from FontFile3; PDF 1.2) A name specifying the format of the
// embedded font program. The name must be Type1C for Type 1 compact fonts or CID-
// FontType0C for Type 0 compact CIDFonts. When additional font formats are added
// to PDF, more values will be defined for Subtype.
Subtype Name
// (Optional; PDF 1.4) A metadata stream containing metadata for the embedded font
// program (see Section 9.2.2, “Metadata Streams”).
Metadata Object
}
func (StreamFont) Copy ¶ added in v1.0.5
func (q StreamFont) Copy(copyRef func(reference Reference) Reference) Object
func (StreamFont) Equal ¶ added in v1.0.49
func (q StreamFont) Equal(obj Object) bool
func (StreamFont) ToRawBytes ¶
func (q StreamFont) ToRawBytes() []byte
type StreamObject ¶ added in v1.0.5
func (StreamObject) Copy ¶ added in v1.0.5
func (q StreamObject) Copy(copyRef func(reference Reference) Reference) Object
func (*StreamObject) Decode ¶ added in v1.0.25
func (q *StreamObject) Decode() ([]byte, error)
func (StreamObject) Equal ¶ added in v1.0.49
func (q StreamObject) Equal(obj Object) bool
func (StreamObject) ToRawBytes ¶ added in v1.0.5
func (q StreamObject) ToRawBytes() []byte
type TextState ¶
type TextState struct {
// Character spacing
Tc float64
// Word spacing
Tw float64
// Horizontal scaling
Th float64
// Leading
Tl float64
// Text font
Tf Name
// Text font size
Tfs float64
// Text rendering mode
Tmode RenderingMode
// Text rise
Trise float64
// Text knockout
Tk float64
}
func NewTextState ¶
func NewTextState() *TextState
type TextString ¶
type TextString string
func (TextString) Copy ¶ added in v1.0.5
func (q TextString) Copy(_ func(reference Reference) Reference) Object
func (TextString) Equal ¶ added in v1.0.49
func (q TextString) Equal(obj Object) bool
func (TextString) ToRawBytes ¶
func (q TextString) ToRawBytes() []byte
type Trailer ¶
type Trailer struct {
// (Required) The total number of entries in the file’s cross-reference table, as defined
// by the combination of the original section and all update sections. Equivalently, this
// value is 1 greater than the highest object number used in the file.
Size int
// (Present only if the file has more than one cross-reference section) The byte offset from
// the beginning of the file to the beginning of the previous cross-reference section
Prev Int // todo: unclear: (Present only if the pdffile has more than one cross-reference section) The byte offset from the beginning of the pdffile to the beginning of the previous cross-reference section.
// (Required; must be an indirect reference) The catalog dictionary for the PDF docu-
// ment contained in the file (see Section 3.6.1, “Document Catalog”).
Root Reference
// (Required if document is encrypted; PDF 1.1) The document’s encryption dictionary
// (see Section 3.5, “Encryption”).
Encrypt Object
// (Optional; must be an indirect reference) The document’s information dictionary
// (see Section 9.2.1, “Document Information Dictionary”).
Info Reference
// (Optional; PDF 1.1) An array of two strings constituting a file identifier (see Section
// 9.3, “File Identifiers”) for the file.
ID [2]String
}
func (*Trailer) Read ¶ added in v1.0.5
func (q *Trailer) Read(dict Dictionary) error
func (*Trailer) ToRawBytes ¶
type Type0Font ¶
type Type0Font struct {
// (Required) The PostScript name of the font. In principle, this is an arbitrary
// name, since there is no font program associated directly with a Type 0 font
// dictionary. The conventions described here ensure maximum compatibility
// with existing Acrobat products.
// If the descendant is a Type 0 CIDFont, this name should be the concatenation
// of the CIDFont’s BaseFont name, a hyphen, and the CMap name given in the
// Encoding entry (or the CMapName entry in the CMap program itself). If the
// descendant is a Type 2 CIDFont, this name should be the same as the
// CIDFont’s BaseFont name.
BaseFont Name
// (Required) The name of a predefined CMap, or a stream containing a CMap
// stream program, that maps character codes to font numbers and CIDs. If the descen-
// dant is a Type 2 CIDFont whose associated TrueType font program is not em-
// bedded in the PDF file, the Encoding entry must be a predefined CMap name
// (see “Glyph Selection in CIDFonts” on page 339).
Encoding Object // name or dictionary
// (Required) An array specifying one or more fonts or CIDFonts that are
// descendants of this composite font. This array is indexed by the font number
// that is obtained by mapping a character code through the CMap specified in
// the Encoding entry.
// Note: In all PDF versions up to and including PDF 1.4, DescendantFonts must
// be a one-element array containing a CIDFont dictionary.
DescendantFonts Object // Array or Reference
// (Optional) A stream containing a CMap file that maps character codes to
// Unicode values (see Section 5.9, “ToUnicode CMaps”).
ToUnicode Reference
}
func (*Type0Font) Read ¶ added in v1.0.5
func (q *Type0Font) Read(dict Dictionary) error
func (Type0Font) ToRawBytes ¶
type Type3Font ¶ added in v1.0.5
type Type3Font struct {
// (Required in PDF 1.0; optional otherwise) See Table 5.8 on page 317.
Name Name
// (Required) A rectangle (see Section 3.8.3, “Rectangles”), expressed in the
// glyph coordinate system, specifying the font bounding box. This is the small-
// est rectangle enclosing the shape that would result if all of the glyphs of the
// font were placed with their origins coincident and then filled.
// If all four elements of the rectangle are zero, no assumptions are made based
// on the font bounding box. If any element is nonzero, it is essential that the
// font bounding box be accurate; if any glyph’s marks fall outside this bound-
// ing box, incorrect behavior may result.
FontBBox Rectangle
// (Required) An array of six numbers specifying the font matrix, mapping
// glyph space to text space (see Section 5.1.3, “Glyph Positioning and
// Metrics”). A common practice is to define glyphs in terms of a 1000-unit
// glyph coordinate system, in which case the font matrix is
// [0.001 0 0 0.001 0 0].
FontMatrix Array
// (Required) A dictionary in which each key is a character name and the value
// associated with that key is a content stream that constructs and paints the
// glyph for that character. The stream must include as its first operator either
// d0 or d1. This is followed by operators describing one or more graphics
// objects, which may include path, text, or image objects. See below for more
// details about Type 3 glyph descriptions.
CharProcs Object
// (Required) An encoding dictionary whose Differences array specifies the
// complete character encoding for this font (see Section 5.5.5, “Character
// Encoding”; also see implementation note 46 in Appendix H).
Encoding Object
// (Required) The first character code defined in the font’s Widths array.
FirstChar Int
// (Required) The last character code defined in the font’s Widths array.
LastChar Int
// (Required; indirect reference preferred) An array of (LastChar − FirstChar + 1)
// widths, each element being the glyph width for the character whose code is
// FirstChar plus the array index. For character codes outside the range FirstChar
// to LastChar, the width is 0. These widths are interpreted in glyph space as
// specified by FontMatrix (unlike the widths of a Type 1 font, which are in
// thousandths of a unit of text space).
// Note: If FontMatrix specifies a rotation, only the horizontal component of the
// transformed width is used. That is, the resulting displacement is always horizon-
// tal in text space, as is the case for all simple fonts.
Widths Object
// (Optional but strongly recommended; PDF 1.2) A list of the named resources,
// such as fonts and images, required by the glyph descriptions in this font (see
// Section 3.7.2, “Resource Dictionaries”). If any glyph descriptions refer to
// named resources but this dictionary is absent, the names are looked up in the
// resource dictionary of the page on which the font is used. (See implementa-
// tion note 47 in Appendix H.)
Resources Object
// (Optional; PDF 1.2) A stream containing a CMap file that maps character
// codes to Unicode values (see Section 5.9, “ToUnicode CMaps”).
ToUnicode Reference
}
func (*Type3Font) Read ¶ added in v1.0.5
func (q *Type3Font) Read(dict Dictionary) error
func (Type3Font) ToRawBytes ¶ added in v1.0.5
Source Files
¶
- array.go
- boolean.go
- cidsysteminfo.go
- colorspacefamilies.go
- date.go
- dictionary.go
- documentcatalog.go
- encoding.go
- encryptiondictionary.go
- filespecification.go
- filter.go
- font.go
- font_cid.go
- font_standard.go
- font_standardnames.go
- font_streamdictionary.go
- font_type0.go
- font_type3.go
- font_types.go
- fontdescriptor.go
- form.go
- function.go
- graphicsstate.go
- image.go
- indirectobject.go
- informationdictionary.go
- int.go
- interfaces.go
- name.go
- namedictionary.go
- nametree.go
- null.go
- number.go
- numbertree.go
- objectstreamdictionary.go
- page.go
- pagetreenode.go
- proceduresets.go
- rectangle.go
- reference.go
- renderingmode.go
- resourcedictionary.go
- stream.go
- streamdictionary.go
- string.go
- textstate.go
- textstring.go
- trailer.go
Directories
¶
| Path | Synopsis |
|---|---|
|
standardfont
|
|
|
afm
Package afm implements a decoder for AFM (Adobe Font Metrics) files.
|
Package afm implements a decoder for AFM (Adobe Font Metrics) files. |
|
fixed
Package fixed provides types to work with fixed-point numbers.
|
Package fixed provides types to work with fixed-point numbers. |
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