# PDF::Class PDF::Class provides a set of roles and classes that map to the internal structure of PDF documents; the aim being to make it easier to read, write and validate PDF files. It assists with the construction of valid PDF documents, providing type-checking and the sometimes finicky serialization rules regarding objects. This is the base class for [PDF::API6](https://github.com/p6-pdf/PDF-API6). ## Description The top level of a PDF document is of type `PDF::Class`. It contains the `PDF::Catalog` as its `Root` entry. ``` use PDF::Class; use PDF::Catalog; use PDF::Page; my PDF::Class $pdf .= open: "t/helloworld.pdf"; my PDF::Catalog $catalog = $pdf.Root; given $catalog.ViewerPreferences //= {} { .HideToolbar = True; } my PDF::Page $new-page = $pdf.add-page; #... ``` - This module contains definitions for many other standard PDF objects, such as Pages, Fonts and Images, as listed below. - There is generally a one-to-one correspondence between raw dictionary entries and accessors, e.g. `$pdf` versus `$pdf.Root.AA`. - There are often accessor aliases, to aide clarity. E.g. `$pdf.Root.AA` can also be written as `$pdf.catalog.additional-actions`. - The classes often contain additional accessor and helper methods. For example `$pdf.page(10)` - references page 10, without the need to navigate the catalog and page tree. This module is a work in progress. It currently defines roles and classes for many of the more commonly occurring PDF objects as described in the [PDF 32000-1:2008 1.7](http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf) specification. ## More examples: ### Set Marked Info options ``` use PDF::Class; use PDF::Catalog; my PDF::Class $pdf .= new; my PDF::Catalog $catalog = $pdf.catalog; with $catalog.MarkInfo //= {} { .Marked = True; .UserProperties = False; .Suspects = False; } ``` ### Set Page Layout & Viewer Preferences ``` use PDF::Class; use PDF::Catalog; my PDF::Class $pdf .= new; my PDF::Catalog $doc = $pdf.catalog; $doc.PageLayout = 'TwoColumnLeft'; $doc.PageMode = 'UseThumbs'; given $doc.ViewerPreferences //= {} { .Duplex = 'DuplexFlipShortEdge'; .NonFullScreenPageMode = 'UseOutlines'; } # ...etc, see PDF::ViewerPreferences ``` ### List AcroForm Fields ``` use PDF::Class; use PDF::AcroForm; use PDF::Field; my PDF::Class $doc .= open: "t/pdf/samples/OoPdfFormExample.pdf"; with my PDF::AcroForm $acroform = $doc.catalog.AcroForm { my PDF::Field @fields = $acroform.fields; # display field names and values for @fields -> $field { say "{$field.key}: {$field.value}"; } } ``` ## Gradual Types In general, PDF::Class provides accessors for structured access and safe update of PDF objects. However is is also possible to bypass these accessors; instead access hashes and arrays directly, giving raw access to the PDF data. This will also bypass type coercements, so you may need to be more explicit. In the following example we cast the PageMode to a name, so it appears as a name in the out put stream `:name`, rather than a string `'UseToes'`. ``` use PDF::Class; use PDF::Catalog; my PDF::Class $pdf .= new; my PDF::Catalog $doc = $pdf.catalog; try { $doc.PageMode = 'UseToes'; CATCH { default { say "err, that didn't work: $_" } } } # same again, bypassing type checking $doc = :name; ``` ## Scripts in this Distribution #### `pdf-append.p6 --save-as=output.pdf in1.pdf in2.pdf ...` appends PDF files. #### `pdf-burst.p6 --save-as=basename-%03d.pdf --password=pass in.pdf` bursts a multi-page PDF into single page PDF files #### `pdf-checker.p6 --trace --render --strict --exclude=Entry1,Entry2 --repair input-pdf` This is a low-level tool for PDF authors and users. It traverses a PDF, checking it's internal structure against PDF:Class definitions as derived from the [PDF 32000-1:2008 1.7](http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf) specification. - `--trace` print a dump of PDF Objects as the file is traversed - `--render` also render and check the contents of graphical objects, such as Pages and XObject forms - `--strict` perform additional checks: - `--repair` repair PDF before Checking #### Example 1: Dump a simple PDF % pdf-checker.p6 --trace t/helloworld.pdf xref: << /ID ... /Info 1 0 R /Root 2 0 R >> % PDF::Class /ID: [ "×C¨\x[86]üÜø\{iÃeH!\x[9E]©A" "×C¨\x[86]üÜø\{iÃeH!\x[9E]©A" ] % PDF::COS::Array[Str] /Info: << /Author "t/helloworld.t" /CreationDate (D:20151225000000Z00'00') /Creator "PDF::Class" /Producer "Perl 6 PDF::Class 0.2.5" >> % PDF::COS::Dict+{PDF::Info} /Root: << /Type /Catalog /Pages 3 0 R >> % PDF::Catalog /Pages: << /Type /Pages /Count 1 /Kids ... /Resources ... >> % PDF::Pages /Kids: [ 4 0 R ] % PDF::COS::Array[PDF::Content::PageNode] [0]: << /Type /Page /Contents 5 0 R /MediaBox ... /Parent 3 0 R >> % PDF::Page /Contents: << /Length 1944 >> % PDF::COS::Stream /MediaBox: [ 0 0 595 842 ] % PDF::COS::Array[Numeric] /Resources: << /ExtGState ... /Font ... /ProcSet ... /XObject ... >> % PDF::COS::Dict+{PDF::Resources} /ExtGState: << /GS1 6 0 R >> % PDF::COS::Dict[Hash] /GS1: << /Type /ExtGState /ca 0.5 >> % PDF::COS::Dict+{PDF::ExtGState} /Font: << /F1 7 0 R /F2 8 0 R /F3 9 0 R >> % PDF::COS::Dict[PDF::Resources::Font] /F1: << /Type /Font /Subtype /Type1 /BaseFont /Helvetica-Bold /Encoding /WinAnsiEncoding >> % PDF::Font::Type1 /F2: << /Type /Font /Subtype /Type1 /BaseFont /Helvetica /Encoding /WinAnsiEncoding >> % PDF::Font::Type1 /F3: << /Type /Font /Subtype /Type1 /BaseFont /ZapfDingbats >> % PDF::Font::Type1 /ProcSet: [ /PDF /Text ] % PDF::COS::Array[PDF::COS::Name] /XObject: << /Im1 10 0 R /Im2 11 0 R >> % PDF::COS::Dict[PDF::Resources::XObject] /Im1: << /Type /XObject /Subtype /Image /BitsPerComponent 8 /ColorSpace /DeviceRGB /Filter /DCTDecode /Height 254 /Width 200 /Length 8247 >> % PDF::XObject::Image /Im2: << /Type /XObject /Subtype /Image /BitsPerComponent 8 /ColorSpace ... /Height 42 /Width 37 /Length 1554 >> % PDF::XObject::Image /ColorSpace: [ /Indexed /DeviceRGB 255 12 0 R ] % PDF::ColorSpace::Indexed [3]: << /Length 768 >> % PDF::COS::Stream Checking of t/helloworld.pdf completed with 0 warnings and 0 errors This example dumps a PDF and shows how PDF::Class has interpreted it. - indirect object `1 0 R` is a dictionary that has had the `PDF::Info` role applied - indirect object `2 0 R` has been loaded as a `PDF::Catalog` object. - font `/F3` is a ZapfDingbats type1 font The PDF contains has one page (PDF::Page) that references various other objects, such as fonts and xobject images. #### Example 2: Check a sample PDF % wget http://www.stillhq.com/pdfdb/000025/data.pdf % pdf-checker.p6 --strict --render data.pdf Warning: Error processing indirect object 27 0 R at byte offset 976986: Ignoring 1 bytes before 'endstream' marker Rendering warning(s) in 28 0 R (PDF::Page): -- unexpected operation 'w' (SetLineWidth) used in Path context, following 'm' (MoveTo) -- unexpected operation 'w' (SetLineWidth) used in Path context, following 'm' (MoveTo) Rendering warning(s) in 30 0 R (PDF::XObject::Form): -- unexpected operation 'w' (SetLineWidth) used in Path context, following 'm' (MoveTo) Unknown entries 1 0 R (PDF::Catalog) struct: /ViewPreferences Checking of /home/david/Documents/test-pdf/000025.pdf completed with 5 warnings and 0 errors In this example: - Object `28 0 R` had an extra byte in its stream data. - Some Page and XObject graphics operations were not in the expected order, (as outlined in PDF 32000 Figure 9 – Graphics Objects). - The Catalog dictionary had an unexpected `/ViewPreferences` entry (It should be `/ViewerPreferences`, see PDF::Catalog). ##### Notes - A message such as `No handler class PDF::Filespec`, usually indicates the the object has not yet been implemented in PDF::Class. #### `pdf-content-dump.p6 in.pdf` Displays the content streams for PDF pages, commented, and in a human-readable format: % pdf-content-dump.p6 t/example.pdf % **** Page 1 **** BT % BeginText 1 0 0 1 100 150 Tm % SetTextMatrix /F1 16 Tf % SetFont 17.6 TL % SetTextLeading [ (Hello, world!) ] TJ % ShowSpaceText T* % TextNextLine ET % EndText #### `pdf-info.p6 in.pdf` Prints various PDF properties. For example: % pdf-info.p6 ~/Documents/test-pdfs/stillhq.com/000056.pdf File: /home/david/Documents/test-pdfs/stillhq.com/000056.pdf File Size: 63175 bytes Pages: 2 Outlines: no Author: Prince Restaurant CreationDate: Wed Oct 03 23:41:01 2001 Creator: FrameMaker+SGML 6.0 Keywords: Pizza, Pasta, Antipasto, Lasagna, Food ModDate: Thu Oct 04 00:03:04 2001 Producer: Acrobat PDFWriter 4.05 for Power Macintosh Subject: Take Out & Catering Menu Title: Prince Pizzeria & Bar Tagged: no Page Size: variable PDF version: 1.3 Revisions: 2 Encryption: no #### `pdf-revert.p6 --password=pass --save-as=out.pdf in.pdf` undoes the last revision of an incrementally saved PDF file. #### `pdf-toc.p6 --password=pass --/title --/labels in.pdf` prints a table of contents, showing titles and page-numbers, using PDF outlines. % wget http://www.stillhq.com/pdfdb/000432/data.pdf % pdf-toc.p6 data.pdf Linux Kernel Modules Installation HOWTO Table of Contents . . . i 1. Purpose of this Document . . . 1 2. Pre-requisites . . . 2 3. Compiler Speed-up . . . 3 4. Recompiling the Kernel for Modules . . . 4 5.1. Configuring Debian or RedHat for Modules . . . 5 5.2. Configuring Slackware for Modules . . . 5 5.3. Configuring Other Distributions for Modules . . . 6 Note that outlines are an optional PDF feature. C can be used to check if a PDF has them: % pdf-info.p6 my-doc.pdf | grep Outlines: ## Development Status The PDF::Class module is under construction and not yet functionally complete. ## Classes Quick Reference Class | Types | Accessors | Methods | Description ------|-------|-----------|---------|------------ PDF::Class | dict | Encrypt, ID, Info, Root(catalog), Size | Pages, ast, crypt, encrypt, open, permitted, save-as, update, version | PDF entry-point. either a trailer dict or an XRef stream PDF::Catalog | dict | AA(additional-actions), AcroForm, Collection, Dests, Lang, Legal, MarkInfo, Metadata, Names, NeedsRendering, OCProperties, OpenAction, Outlines, OutputIntents, PageLabels, PageLayout, PageMode, Pages, Perms, PieceInfo, Requirements, Resources, SpiderInfo, StructTreeRoot, Threads, Type, URI, Version, ViewerPreferences | core-font, find-resource, images, resource-entry, resource-key, use-font, use-resource | /Type /Catalog - usually the document root in a PDF See [PDF 1.7 Section 3.6.1 Document Catalog] PDF::AcroForm | dict | CO(calculation-order), DA(default-appearance), DR(default-resources), Fields, NeedAppearances, Q(quadding), SigFlags, XFA | fields, fields-hash | PDF::Action::GoTo | dict | D(destination), Next, S, Type | | /Action Subtype - GoTo PDF::Action::GoToR | dict | D(destination), F(file), NewWindow, Next, S, Type | | /Action Subtype - GoToR PDF::Action::JavaScript | dict | JS, Next, S, Type | | /Action Subtype - GoTo PDF::Action::Launch | dict | F(file), Mac, NewWindow, Next, S, Type, Unix, Win | | /Action Subtype - Launch PDF::Action::Named | dict | N(action-name), Next, S, Type | | /Action Subtype - GoTo PDF::Action::URI | dict | Base, IsMap, Next, S, Type, URI | | /Action Subtype - URI PDF::Annot::Caret | dict | AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), OC(optional-content), P(page), Popup, RC(rich-text), RD(rectangle-differences), RT(reply-type), Rect, StructParent, Subtype, Sy(symbol), T(text-label), Type | | PDF::Annot::Circle | dict | AP(appearance), AS(appearance-state), BE(border-effect), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), IC(interior-color), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), OC(optional-content), P(page), Popup, RC(rich-text), RD(rectangle-differences), RT(reply-type), Rect, StructParent, Subtype, T(text-label), Type | | PDF::Annot::FileAttachment | dict | AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), FS(file-spec), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), Name(icon-name), OC(optional-content), P(page), Popup, RC(rich-text), RT(reply-type), Rect, StructParent, Subtype, T(text-label), Type | | PDF::Annot::Link | dict | A(action), AP(appearance), AS(appearance-state), BS, Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), Dest, ExData(external-data), F(flags), H(highlight-mode), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), OC(optional-content), P(page), PA(uri-action), Popup, QuadPoints, RC(rich-text), RT(reply-type), Rect, StructParent, Subtype, T(text-label), Type | | PDF::Annot::Markup | dict | AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), OC(optional-content), P(page), Popup, RC(rich-text), RT(reply-type), Rect, StructParent, Subtype, T(text-label), Type | | PDF::Annot::Popup | dict | AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), Contents, DR(default-resources), F(flags), M(mod-time), NM(annotation-name), OC(optional-content), Open, P(page), Parent, Rect, StructParent, Subtype, Type | | PDF::Annot::Square | dict | AP(appearance), AS(appearance-state), BE(border-effect), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), IC(interior-color), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), OC(optional-content), P(page), Popup, RC(rich-text), RD(rectangle-differences), RT(reply-type), Rect, StructParent, Subtype, T(text-label), Type | | PDF::Annot::Text | dict | AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), CA(constant-opacity), Contents, CreationDate, DR(default-resources), ExData(external-data), F(flags), IRT(reply-to-ref), IT(intent), M(mod-time), NM(annotation-name), Name(icon-name), OC(optional-content), Open, P(page), Popup, RC(rich-text), RT(reply-type), Rect, State, StateModel, StructParent, Subtype, T(text-label), Type | | /Type Annot - Annonation subtypes See [PDF 1.7 Section 8.4 Annotations] PDF::Annot::ThreeD | dict | 3DA(activation), 3DB(view-box), 3DD(artwork), 3DI(interactive), 3DV(default-view), AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), Contents, DR(default-resources), F(flags), M(mod-time), NM(annotation-name), OC(optional-content), P(page), Rect, StructParent, Subtype, Type | | PDF::Annot::Widget | dict | A(action), AA(additional-actions), AP(appearance), AS(appearance-state), BS(border-style), Border, C(color), Contents, DR(default-resources), F(flags), H(highlight-mode), M(mod-time), MK, NM(annotation-name), OC(optional-content), P(page), Rect, StructParent, Subtype, Type | | PDF::Appearance | dict | D(down), N(normal), R(rollover) | | PDF::Border | dict | D(dash-pattern), S(style), Type, W(width) | | PDF::CIDSystemInfo | dict | Ordering, Registry, Supplement | | PDF::CMap | stream | CIDSystemInfo, CMapName, Type, UseCMap, WMode | | /Type /CMap PDF::Class::ThreeD | dict | 3DA(activation), 3DB(view-box), 3DD(artwork), 3DI(interactive), 3DV(default-view) | | PDF::ColorSpace::CalGray | array | Subtype, dict | BlackPoint, Gamma, WhitePoint | PDF::ColorSpace::CalRGB | array | Subtype, dict | BlackPoint, Gamma, Matrix, WhitePoint | PDF::ColorSpace::DeviceN | array | AlternateSpace, Attributes, Names, Subtype, TintTransform | | PDF::ColorSpace::ICCBased | array | Subtype, dict | Alternate, Metadata, N, Range | PDF::ColorSpace::Indexed | array | Base, Hival, Lookup, Subtype | | PDF::ColorSpace::Lab | array | Subtype, dict | BlackPoint, Range, WhitePoint | PDF::ColorSpace::Pattern | array | Colorspace, Subtype | | PDF::ColorSpace::Separation | array | AlternateSpace, Name, Subtype, TintTransform | | PDF::Destination | array | fit, page | delegate-destination, is-page-ref | PDF::Encoding | dict | BaseEncoding, Differences, Type | | PDF::ExtGState | dict | AIS(alpha-source-flag), BG(black-generation-old), BG2(black-generation), BM(blend-mode), CA(stroke-alpha), D(dash-pattern), FL(flatness-tolerance), Font, HT(halftone), LC(line-cap), LJ(line-join), LW(line-width), ML(miter-limit), OP(overprint-paint), OPM(overprint-mode), RI(rendering-intent), SA(stroke-adjustment), SM(smoothness-tolerance), SMask(soft-mask), TK(text-knockout), TR(transfer-function-old), TR2(transfer-function), Type, UCR(under-color-removal-old), UCR2(under-color-removal), ca(fill-alpha), op(overprint-stroke) | transparency | PDF::Field::Button | dict | DV(default-value), Opt, V(value) | | PDF::Field::Choice | dict | DV(default-value), I(indices), Opt, TI(top-index), V(value) | | PDF::Field::Signature | dict | Lock, SV(seed-value), V(value) | | PDF::Field::Text | dict | DV(default-value), MaxLen, V(value) | | PDF::Font::CIDFont | dict | BaseFont, CIDSystemInfo, CIDToGIDMap, DW(default-width), DW2(default-width-and-height), FontDescriptor, W(widths), W2(heights) | | PDF::Font::CIDFontType0 | dict | BaseFont, CIDSystemInfo, CIDToGIDMap, DW(default-width), DW2(default-width-and-height), FontDescriptor, Subtype, Type, W(widths), W2(heights) | font-obj, make-font, set-font-obj | PDF::Font::CIDFontType2 | dict | BaseFont, CIDSystemInfo, CIDToGIDMap, DW(default-width), DW2(default-width-and-height), FontDescriptor, Subtype, Type, W(widths), W2(heights) | font-obj, make-font, set-font-obj | PDF::Font::MMType1 | dict | BaseFont, Encoding, FirstChar, FontDescriptor, LastChar, Name, Subtype, ToUnicode, Type, Widths | font-obj, make-font, set-font-obj | PDF::Font::TrueType | dict | BaseFont, Encoding, FirstChar, FontDescriptor, LastChar, Name, Subtype, ToUnicode, Type, Widths | font-obj, make-font, set-font-obj | TrueType fonts - /Type /Font /Subtype TrueType see [PDF 1.7 Section 5.5.2 TrueType Fonts] PDF::FontDescriptor | dict | Ascent, AvgWidth, CapHeight, CharSet, Descent, Flags, FontBBox, FontFamily, FontFile, FontFile2, FontFile3, FontName, FontStretch, FontWeight, ItalicAngle, Leading, MaxWidth, MissingWidth, StemH, StemV, Type, XHeight | | PDF::FontFile | stream | Length1, Length2, Length3, Metadata, Subtype | | PDF::FontStream | dict | Length1, Length2, Length3, Metadata | | PDF::Function::Exponential | stream | C0, C1, Domain, FunctionType, N, Range | calc, calculator | /FunctionType 2 - Exponential see [PDF 1.7 Section 3.9.2 Type 2 (Exponential Interpolation) Functions] PDF::Function::PostScript | stream | Domain, FunctionType, Range | calc, calculator, parse | /FunctionType 4 - PostScript see [PDF 1.7 Section 3.9.4 Type 4 (PostScript Transform) Functions] PDF::Function::Sampled | stream | BitsPerSample, Decode, Domain, Encode, FunctionType, Order, Range, Size | calc, calculator | /FunctionType 0 - Sampled see [PDF 1.7 Section 3.9.1 Type 0 (Sampled) Functions] PDF::Function::Stitching | stream | Bounds, Domain, Encode, FunctionType, Functions, Range | calc, calculator | /FunctionType 3 - Stitching see [PDF 1.7 Section 3.9.3 Type 3 (Stitching) Functions] PDF::Group::Transparency | dict | CS(color-space), I(isolated), K(knockout), S, Type | | PDF::Image | stream | Alternatives, BitsPerComponent, ColorSpace, Decode, Height, ID, ImageMask, Intent, Interpolate, Mask, Metadata, Name, OC, OPI, SMask, SMaskInData, StructParent, Width | to-png | PDF::MCR | dict | MCID, Pg(page), Stm, StmOwn, Type | | PDF::Mask::Alpha | dict | BC(backdrop-color), G(transparency-group), S(subtype), TR(transfer-function), Type | | PDF::Mask::Luminosity | dict | BC(backdrop-color), G(transparency-group), S(subtype), TR(transfer-function), Type | | PDF::Metadata::XML | stream | Metadata, Subtype, Type | | PDF::NameTree | dict | Kids, Limits, Names | | PDF::NumberTree | dict | Kids, Limits, Nums | | PDF::OBJR | dict | Obj, Pg(page), Type | | /Type /OBJR - Object Reference dictionary PDF::OCG | dict | Intent, Name, Type, Usage | | PDF::OCMD | dict | OCGs, P(visibility-policy), Type, VE(visibility-expression) | | PDF::Outline | dict | A(action), C(color), Count, Dest, F(flags), First, Last, Next, Parent, Prev, SE(structure-element), Title | | PDF::Outlines | dict | Count, First, Last, Type | | PDF::OutputIntent::GTS_PDFX | dict | DestOutputProfile, Info, OutputCondition, OutputConditionIdentifier, RegistryName, S, Type | | PDF::Page | dict | AA(additional-actions), Annots, ArtBox, B(beads), BleedBox, BoxColorInfo, Contents, CropBox, Dur(display-duration), Group, ID, LastModified, MediaBox, Metadata, PZ(preferred-zoom), Parent, PieceInfo, PressSteps, Resources, Rotate, SeparationInfo, StructParents, Tabs, TemplateInstantiated, Thumb(thumbnail-image), Trans(transition-effect), TrimBox, Type, UserUnit, VP(view-ports) | art-box, bbox, bleed-box, canvas, contents, contents-parse, core-font, crop-box, fields, fields-hash, find-resource, finish, gfx, graphics, has-pre-gfx, height, images, media-box, new-gfx, pre-gfx, pre-graphics, render, resource-entry, resource-key, save-as-image, text, tiling-pattern, to-landscape, to-xobject, trim-box, use-font, use-resource, width, xobject-form | /Type /Page - describes a single PDF page PDF::Pages | dict | Count, CropBox, Kids, MediaBox, Parent, Resources, Rotate, Type | add-page, add-pages, art-box, bbox, bleed-box, core-font, crop-box, find-resource, height, images, media-box, page-count, page-index, resource-entry, resource-key, to-landscape, trim-box, use-font, use-resource, width | /Type /Pages - a node in the page tree PDF::Pattern::Shading | dict | ExtGState, Matrix, PatternType, Shading, Type | | /ShadingType 2 - Axial PDF::Pattern::Tiling | stream | BBox, Matrix, PaintType, PatternType, Resources, TilingType, Type, XStep, YStep | canvas, contents, contents-parse, core-font, find-resource, finish, gfx, graphics, has-pre-gfx, height, images, new-gfx, open, pre-gfx, pre-graphics, render, resource-entry, resource-key, save-as-image, text, tiling-pattern, use-font, use-resource, width, xobject-form | /PatternType 1 - Tiling PDF::Resources | dict | ColorSpace, ExtGState, Font, Pattern, ProcSet, Properties, Shading, XObject | | PDF::Shading::Axial | dict | AntiAlias, BBox, Background, ColorSpace, Coords, Domain, Extend, Function, ShadingType | | /ShadingType 2 - Axial PDF::Shading::Coons | stream | AntiAlias, BBox, Background, BitsPerComponent, BitsPerCoordinate, BitsPerFlag, ColorSpace, Decode, Function, ShadingType | | /ShadingType 6 - Coons PDF::Shading::FreeForm | stream | AntiAlias, BBox, Background, BitsPerComponent, BitsPerCoordinate, BitsPerFlag, ColorSpace, Decode, Function, ShadingType | | /ShadingType 4 - FreeForm PDF::Shading::Function | dict | AntiAlias, BBox, Background, ColorSpace, Domain, Function, Matrix, ShadingType | | /ShadingType 1 - Functional PDF::Shading::Lattice | stream | AntiAlias, BBox, Background, BitsPerComponent, BitsPerCoordinate, ColorSpace, Decode, Function, ShadingType, VerticesPerRow | | /ShadingType 5 - Lattice PDF::Shading::Radial | dict | AntiAlias, BBox, Background, ColorSpace, Coords, Domain, Extend, Function, ShadingType | | /ShadingType 3 - Radial PDF::Shading::Tensor | stream | AntiAlias, BBox, Background, BitsPerComponent, BitsPerCoordinate, BitsPerFlag, ColorSpace, Decode, Function, ShadingType | | /ShadingType 7 - Tensor PDF::Signature | dict | ByteRange, Cert, Changes, ContactInfo, Contents, Location, M(date-signed), Name, Prop_AuthTime, Prop_AuthType, Prop_Build, Reason, Reference, SubFilter, Type, V | | PDF::StructElem | dict | A(attributes), ActualText, Alt(alternative-description), C, E(expanded-form), ID, K(kids), Lang, P(parent), Pg(page), R(revision), S(structure-type), T(title), Type | | PDF::StructTreeRoot | dict | ClassMap, IDTree, K(kids), ParentTree, ParentTreeNextKey, RoleMap, Type | | PDF::ViewerPreferences | dict | CenterWindow, Direction, DisplayDocTitle, Duplex, FitWindow, HideMenubar, HideToolbar, HideWindowUI, NonFullScreenPageMode, NumCopies, PickTrayByPDFSize, PrintArea, PrintPageRange, PrintScaling, ViewArea, ViewClip | | PDF::XObject::Form | stream | BBox, FormType, Group, LastModified, Matrix, Metadata, Name, OC(optional-content-group), OPI, PieceInfo, Ref, Resources, StructParent, StructParents, Subtype, Type | canvas, contents, contents-parse, core-font, find-resource, finish, gfx, graphics, has-pre-gfx, height, images, new-gfx, open, pre-gfx, pre-graphics, render, resource-entry, resource-key, save-as-image, text, tiling-pattern, use-font, use-resource, width, xobject-form | XObject Forms - /Type /XObject /Subtype Form See [PDF Spec 1.7 4.9 Form XObjects] PDF::XObject::Image | stream | Alternatives, BitsPerComponent, ColorSpace, Decode, Height, ID, ImageMask, Intent, Interpolate, Mask, Metadata, Name, OC, OPI, SMask, SMaskInData, StructParent, Subtype, Type, Width | height, image-obj, inline-content, inline-to-xobject, open, to-png, width | XObjects /Type XObject /Subtype /Image See [PDF 1.7 Section 4.8 - Images ] PDF::XObject::PS | stream | Level1, Subtype, Type | | Postscript XObjects /Type XObject /Subtype PS See [PDF 1.7 Section 4.7.1 PostScript XObjects] *(generated by `etc/make-quick-ref.pl`)*