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* M5: comments without an appearance stream are drawn (display only, never saved) #260 (page 7): a FreeText box with /DA and an orange /C background, a Text note and an Ink stroke, all without /AP, were not drawn; Acrobat, MuPDF, PDFium and Poppler draw them. The renderer only draws /AP (plus the Highlight fallback of #274), and pdfcraft-annot, which already draws all of these for PdfCraft's own comments, can't be used from the renderer (both are L3). pdfcraft_annot::with_missing_appearances returns a copy of the document in which every annotation without /AP /N that appearance::build can draw (FreeText, Ink, Text, FileAttachment, stamps, shapes, lines, markup, …) has the appearance build draws from its dictionary; links, form fields and pop-ups are left alone, as is anything build declines. The engine keeps that copy, written as an in-memory incremental update, in a new Document::display: the page view's render pool, page_render and page images (export_source) read it. Document::bytes, what Save, signatures and the inspector use, is unchanged. display is rebuilt wherever the renderer was (open, refresh, scoped refresh) and is bytes itself when nothing is missing or the document can't be edited. Tests: annot tests::comments_without_appearances_get_one_for_display_only (FreeText, Ink and Text get /AP /N in the copy, an existing /AP is kept, Link, Widget and an unknown subtype aren't touched, the original is untouched, none means no copy) and engine tests::comments_without_appearances_are_drawn_but_not_saved (the page view draws the FreeText background and the Ink stroke, before and after an edit; the working bytes stay the opened file; Save writes no /AP). On main the page view shows white where the FreeText box is. Parity: view.render-annotation-appearances cites the test and notes what's left (Link borders without /AP, printing). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Test the Ink stroke on its apex row: Ink is now a curve through its points (#374) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>
pdfcraft-annot
Comments (annotations), ISO 32000-2 §12.5. Layer L3, depends only on pdfcraft-cos.
What it does
- Builders for the comment types Acrobat's commenting tools create: sticky note (
Text+Popup), highlight, underline, strikethrough, squiggly, rectangle (Square), oval (Circle), line and arrow (Linewith/LE), freehand drawing (Ink) and text box (FreeText). - Appearance streams (
appearance::build) generated from the annotation dictionary, so new and restyled comments look the same in every viewer. Highlights multiply (/BM /Multiply). Note icons are PdfCraft's own drawings. Text boxes use standard Helvetica (WinAnsi), with line breaking by approximate Helvetica proportions (no font program is bundled). - Edits: reply (
/IRT), set review status (a/Statereply, as Acrobat's "Set status" does), change text, move, resize, restyle, delete (with pop-up and replies).
API sketch
let index = add_annotation(&mut doc, &NewAnnotation { page, shape, style, contents, author }, &meta)?;
add_reply(&mut doc, page, index, "Agreed", "Ada", &meta)?;
set_review_state(&mut doc, page, index, ReviewState::Accepted, "Ada", &meta)?;
move_annotation(&mut doc, page, index, dx, dy, &meta)?;
set_style(&mut doc, page, index, Some(rgb), Some(0.5), Some(2.0), &meta)?;
delete_annotation(&mut doc, page, index)?;
signature_image(&doc, page, index)?; // embedded image XObject of Fill & Sign signature/initials
A comment is addressed by (page, index in /Annots), the same pair
pdfcraft_render::Annotation reports. Meta carries the date and the /NM id so edits stay
deterministic; the engine supplies them.
Fidelity rules
- Unknown keys are kept. Inline annotation dictionaries are promoted to indirect objects only when an edit needs a reference to them.
set_stylerefuses (and changes nothing) when it cannot redraw the comment, e.g. stamps, cloudy borders or callouts, instead of leaving a stale appearance.- Replies get the parent's
/Rectand an empty appearance: they appear in comment lists but never paint a second icon. - Resizing a stamp changes its
/Rectand preserves its original appearance and resources; viewers scale that appearance into the new rectangle. Locked stamps refuse the edit.
Not yet
Callouts, polygons and polylines, clouds, carets (insert/replace text), stamps, file
attachments, rich text (/RC, /DS), and the shared named-appearance cache Acrobat writes.