mirror of
https://github.com/storytold/vectorcraft.git
synced 2026-10-27 19:27:21 -06:00
bflatastic
17d2493616
hayro-syntax 0.8.0 reads arrays and dictionaries 64 deep and no deeper wherever they are (the file's text, object streams, the content of pages, forms, patterns, glyphs and masks), walks the page tree without recursion and follows a chain of object streams once: what 0.7.2 overflowed the stack on. hayro-interpret 0.8.0 comes with it (a new device interface: the importer's device takes it as before). Our raw pre-scan of the file's text and page content goes: the reader's own cap covers more, and the scan miscounted the bytes of unfiltered binary streams. What 0.8.0 still builds by recursion with no cap is refused when the file opens: functions and colour spaces built on themselves or on one another more than 16 deep, and calculator functions whose procedures nest more than 64 deep. The import runs on a 16 MB thread, as the SVG importer does. hayro-syntax 0.8 turns on flate2's zlib-rs backend, which the whole app then deflates with: a compressed native file is the same gzip stream as before (header and data), but its deflate blocks now depend on how the data is fed, so the streaming test checks the header and the unpacked data instead of the bytes.
780 lines
34 KiB
Rust
780 lines
34 KiB
Rust
use std::sync::Arc;
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use vectorcraft_color::{BlendMode, Color, Gradient, GradientGeom, GradientKind, GradientPaint, Paint};
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use vectorcraft_doc::{
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Appearance, AppearanceItem, Artboard, CharStyle, Dash, Document, ImageBlob, ImageObject, LineCap, LineJoin, Node, NodeId, NodeKind, TextObject,
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};
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use vectorcraft_geom::{Affine, FillRule, PathData, Point, Rect, shapes};
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use crate::*;
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fn doc(w: f64, h: f64) -> Document {
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Document::new(w, h)
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}
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fn add(d: &mut Document, mut n: Node) -> NodeId {
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n.id = d.alloc_id();
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let layer = d.default_layer().expect("layer");
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let len = d.children(Some(layer)).map_or(0, |c| c.len());
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d.insert(Some(layer), len, n).expect("insert")
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}
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fn rect_node(r: Rect, fill: Color) -> Node {
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Node::path(NodeId(0), shapes::rectangle(r), Appearance::basic(Paint::solid(fill), Paint::None, 0.0))
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}
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fn leaves(d: &Document) -> Vec<&Node> {
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let mut out = vec![];
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d.walk(|n| {
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if !n.is_container() && !matches!(n.kind, NodeKind::Path { clipping: true, .. }) {
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out.push(n);
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}
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});
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out
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}
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fn close(a: Rect, b: Rect, tol: f64) -> bool {
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(a.x0 - b.x0).abs() < tol && (a.y0 - b.y0).abs() < tol && (a.x1 - b.x1).abs() < tol && (a.y1 - b.y1).abs() < tol
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}
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fn roundtrip(d: &Document) -> Document {
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let bytes = export(d, &PdfOptions::default()).expect("export");
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import(&bytes).expect("import")
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}
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fn uncompressed(d: &Document) -> String {
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let bytes = export(d, &PdfOptions::uncompressed()).expect("export");
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String::from_utf8_lossy(&bytes).into_owned()
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}
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fn page_count(bytes: &[u8]) -> usize {
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hayro_syntax::Pdf::new(bytes.to_vec()).expect("parse").pages().len()
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}
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#[test]
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fn export_is_valid_pdf() {
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let mut d = doc(200.0, 100.0);
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add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::rgb(1.0, 0.0, 0.0)));
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let bytes = export(&d, &PdfOptions::default()).unwrap();
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assert!(bytes.starts_with(b"%PDF-1.7"));
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let tail = String::from_utf8_lossy(&bytes[bytes.len().saturating_sub(64)..]).into_owned();
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assert!(tail.contains("startxref") && tail.contains("%%EOF"), "{tail}");
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assert!(String::from_utf8_lossy(&bytes).contains("xref"));
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assert_eq!(page_count(&bytes), 1);
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}
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#[test]
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fn metadata_creator_and_title() {
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let mut d = doc(100.0, 100.0);
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d.title = "Poster".into();
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let s = uncompressed(&d);
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assert!(s.contains("VectorCraft"));
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assert!(s.contains("Poster"));
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}
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#[test]
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fn one_page_per_artboard_with_sizes() {
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let mut d = doc(200.0, 100.0);
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d.artboards.push(Artboard {
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id: 2,
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name: "B".into(),
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rect: Rect::new(300.0, 0.0, 400.0, 400.0),
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show_center_mark: false,
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show_cross_hairs: false,
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});
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d.artboards.push(Artboard {
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id: 3,
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name: "C".into(),
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rect: Rect::new(0.0, 500.0, 612.0, 1292.0),
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show_center_mark: false,
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show_cross_hairs: false,
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});
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let bytes = export(&d, &PdfOptions::default()).unwrap();
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let pdf = hayro_syntax::Pdf::new(bytes).unwrap();
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let sizes: Vec<(f32, f32)> = pdf.pages().iter().map(|p| p.render_dimensions()).collect();
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assert_eq!(sizes, vec![(200.0, 100.0), (100.0, 400.0), (612.0, 792.0)]);
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}
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#[test]
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fn artboard_range_and_bad_index() {
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let mut d = doc(200.0, 100.0);
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d.artboards.push(Artboard {
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id: 2,
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name: "B".into(),
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rect: Rect::new(300.0, 0.0, 400.0, 400.0),
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show_center_mark: false,
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show_cross_hairs: false,
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});
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let bytes = export(&d, &PdfOptions { artboards: Some(vec![1]), ..Default::default() }).unwrap();
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let pdf = hayro_syntax::Pdf::new(bytes).unwrap();
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assert_eq!(pdf.pages().len(), 1);
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assert_eq!(pdf.pages()[0].render_dimensions(), (100.0, 400.0));
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assert_eq!(export(&d, &PdfOptions { artboards: Some(vec![5]), ..Default::default() }), Err(PdfError::BadArtboard(5)));
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d.artboards.clear();
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assert_eq!(export(&d, &PdfOptions::default()), Err(PdfError::NoArtboards));
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}
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#[test]
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fn roundtrip_rect_and_ellipse_bounds() {
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let mut d = doc(300.0, 200.0);
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add(&mut d, rect_node(Rect::new(10.0, 20.0, 110.0, 70.0), Color::rgb(1.0, 0.0, 0.0)));
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let e = Node::path(
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NodeId(0),
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shapes::ellipse(Rect::new(150.0, 40.0, 250.0, 180.0)),
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Appearance::basic(Paint::solid(Color::rgb(0.0, 0.0, 1.0)), Paint::None, 0.0),
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);
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add(&mut d, e);
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 2);
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assert!(close(l[0].geometric_bounds().unwrap(), Rect::new(10.0, 20.0, 110.0, 70.0), 0.01), "{:?}", l[0].geometric_bounds());
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assert!(close(l[1].geometric_bounds().unwrap(), Rect::new(150.0, 40.0, 250.0, 180.0), 0.05), "{:?}", l[1].geometric_bounds());
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assert_eq!(out.artboards.len(), 1);
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assert!(close(out.artboards[0].rect, Rect::new(0.0, 0.0, 300.0, 200.0), 1e-6));
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}
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#[test]
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fn an_instance_whose_art_reaches_the_page_is_written() {
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// The symbol's red rectangle, (100, 50) to (140, 90), drawn from (-50, -50): on the page, while
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// the 20 × 20 square around the origin, moved to (-60, -60) to (-40, -40), is off it.
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let mut d = doc(200.0, 100.0);
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let red = rect_node(Rect::new(100.0, 50.0, 140.0, 90.0), Color::rgb(1.0, 0.0, 0.0));
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let far = vectorcraft_doc::Symbol { name: "Far".into(), art: Arc::new(red) };
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d.symbols.push(far.clone());
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let instance = Node::new(NodeId(0), NodeKind::SymbolInstance { symbol: "Far".into(), xf: Affine::translate((-50.0, -50.0)) });
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add(&mut d, instance.clone());
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 1);
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assert!(close(l[0].geometric_bounds().unwrap(), Rect::new(50.0, 0.0, 90.0, 40.0), 0.01), "{:?}", l[0].geometric_bounds());
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// An element of a knockout group, beside a blue rectangle.
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let mut d = doc(200.0, 100.0);
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d.symbols.push(far);
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let blue = rect_node(Rect::new(150.0, 10.0, 170.0, 30.0), Color::rgb(0.0, 0.0, 1.0));
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let mut group = Node::group(NodeId(0), vec![Arc::new(instance), Arc::new(blue)]);
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group.knockout = vectorcraft_doc::Knockout::On;
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add(&mut d, group);
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let fills: Vec<[u8; 4]> = leaves(&roundtrip(&d)).iter().filter_map(|n| Some(n.appearance.fill_paint().color()?.to_rgba8(1.0))).collect();
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assert!(fills.contains(&[255, 0, 0, 255]) && fills.contains(&[0, 0, 255, 255]), "{fills:?}");
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}
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#[test]
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fn an_instance_whose_brush_art_reaches_the_page_is_written() {
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// The symbol's art: a line from (0, 40) to (0, 60) with a 1 pt stroke painted by a 20 pt round
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// nib. Drawn from (-5, 0), the line lies left of the page, and the nib paints 10 pt either side
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// of it, onto the page.
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let mut d = doc(200.0, 100.0);
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let mut lib = vectorcraft_brush::library(&d);
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let Some(vectorcraft_brush::BrushKind::Calligraphic(c)) = lib.iter_mut().find(|b| b.name == "3 pt. Round").map(|b| &mut b.kind) else {
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panic!("the 3 pt. Round brush")
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};
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c.size = 20.0;
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vectorcraft_brush::store(&mut d, &lib);
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let mut stroke = Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 1.0);
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stroke.stroke_mut().unwrap().brush = Some("3 pt. Round".into());
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let line = Node::path(NodeId(0), shapes::line((0.0, 40.0).into(), (0.0, 60.0).into()), stroke);
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d.symbols.push(vectorcraft_doc::Symbol { name: "Nib".into(), art: Arc::new(line) });
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add(&mut d, Node::new(NodeId(0), NodeKind::SymbolInstance { symbol: "Nib".into(), xf: Affine::translate((-5.0, 0.0)) }));
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 1, "the nib's art");
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assert!(close(l[0].geometric_bounds().unwrap(), Rect::new(-15.0, 30.0, 5.0, 70.0), 0.01), "{:?}", l[0].geometric_bounds());
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}
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#[test]
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fn roundtrip_colours_preserved() {
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let mut d = doc(300.0, 100.0);
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let cols = [Color::rgb8(0x12, 0x34, 0x56), Color::rgb8(0xff, 0x80, 0x00), Color::rgb8(0x00, 0xc0, 0x40)];
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for (i, c) in cols.iter().enumerate() {
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add(&mut d, rect_node(Rect::new(10.0 + 90.0 * i as f64, 10.0, 90.0 + 90.0 * i as f64, 90.0), *c));
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}
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let out = roundtrip(&d);
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let got: Vec<String> = leaves(&out).iter().map(|n| n.appearance.fill_paint().color().unwrap().to_hex()).collect();
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assert_eq!(got, cols.iter().map(|c| c.to_hex()).collect::<Vec<_>>());
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}
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#[test]
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fn roundtrip_stroke_params_merge_fill_and_stroke() {
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let mut d = doc(200.0, 200.0);
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let mut p = Node::path(
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NodeId(0),
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shapes::rectangle(Rect::new(20.0, 20.0, 120.0, 120.0)),
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Appearance::basic(Paint::solid(Color::WHITE), Paint::solid(Color::BLACK), 4.0),
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);
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{
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let st = p.appearance.stroke_mut().unwrap();
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st.cap = LineCap::Round;
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st.join = LineJoin::Bevel;
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st.miter_limit = 7.0;
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st.dash = Some(Dash { pattern: vec![6.0, 3.0], offset: 1.0, align_corners: false });
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}
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add(&mut d, p);
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 1, "fill + stroke of one path should import as one object");
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let st = l[0].appearance.stroke().unwrap();
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assert!((st.width - 4.0).abs() < 1e-3);
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assert_eq!(st.cap, LineCap::Round);
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assert_eq!(st.join, LineJoin::Bevel);
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assert!((st.miter_limit - 7.0).abs() < 1e-3);
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let dash = st.dash.as_ref().unwrap();
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assert_eq!(dash.pattern.len(), 2);
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assert!((dash.pattern[0] - 6.0).abs() < 1e-3 && (dash.offset - 1.0).abs() < 1e-3);
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assert_eq!(l[0].appearance.fill_paint().color().unwrap().to_hex(), "#ffffff");
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}
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#[test]
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fn roundtrip_open_path_and_even_odd() {
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let mut d = doc(200.0, 200.0);
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let mut bp = vectorcraft_geom::BezPath::new();
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bp.move_to((10.0, 10.0));
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bp.curve_to((50.0, 0.0), (80.0, 100.0), (150.0, 60.0));
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add(&mut d, Node::path(NodeId(0), PathData::from_bezpath(&bp), Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 2.0)));
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let mut ring = shapes::rectangle(Rect::new(20.0, 100.0, 120.0, 190.0));
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ring.subpaths.extend(shapes::rectangle(Rect::new(40.0, 120.0, 100.0, 170.0)).subpaths);
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let mut n = rect_node(Rect::ZERO, Color::BLACK);
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n.kind = NodeKind::Path { path: ring, rule: FillRule::EvenOdd, live: None, clipping: false, guide: false };
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add(&mut d, n);
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 2);
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let pb = l[0].path_data().unwrap();
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assert!(!pb.is_closed());
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let b = l[0].geometric_bounds().unwrap();
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let want = bp.bounding_box_exact();
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assert!(close(b, want, 0.05), "{b:?} vs {want:?}");
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assert!(matches!(l[1].kind, NodeKind::Path { rule: FillRule::EvenOdd, .. }));
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assert_eq!(l[1].path_data().unwrap().subpaths.len(), 2);
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}
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trait Exact {
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fn bounding_box_exact(&self) -> Rect;
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}
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impl Exact for vectorcraft_geom::BezPath {
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fn bounding_box_exact(&self) -> Rect {
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kurbo::Shape::bounding_box(self)
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}
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}
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#[test]
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fn gradients_exported_as_shadings_and_reimported() {
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let mut d = doc(300.0, 100.0);
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let lin = GradientPaint::new(Gradient::default());
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let mut n = rect_node(Rect::new(0.0, 0.0, 140.0, 100.0), Color::BLACK);
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n.appearance.set_fill(Paint::Gradient(Box::new(lin)));
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add(&mut d, n);
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let rad = GradientPaint::new(Gradient { kind: GradientKind::Radial, ..Gradient::default() });
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let mut n = rect_node(Rect::new(150.0, 0.0, 250.0, 100.0), Color::BLACK);
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n.appearance.set_fill(Paint::Gradient(Box::new(rad)));
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add(&mut d, n);
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let s = uncompressed(&d);
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let s = s.replace(' ', "");
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assert!(s.contains("/ShadingType2"), "axial shading");
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assert!(s.contains("/ShadingType3"), "radial shading");
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let out = roundtrip(&d);
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let l = leaves(&out);
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assert_eq!(l.len(), 2);
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let Paint::Gradient(g) = l[0].appearance.fill_paint() else { panic!("linear gradient lost: {:?}", l[0].appearance) };
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assert_eq!(g.gradient.kind, GradientKind::Linear);
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let geom = g.geom.unwrap();
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assert!((geom.start.x - 0.0).abs() < 0.1 && (geom.end.x - 140.0).abs() < 0.1, "{geom:?}");
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assert_eq!(g.gradient.stops.first().unwrap().color.to_hex(), "#ffffff");
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assert_eq!(g.gradient.stops.last().unwrap().color.to_hex(), "#000000");
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let Paint::Gradient(g) = l[1].appearance.fill_paint() else { panic!("radial gradient lost") };
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assert_eq!(g.gradient.kind, GradientKind::Radial);
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assert!((g.geom.unwrap().start - Point::new(200.0, 50.0)).hypot() < 0.1);
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}
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#[test]
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fn hidden_objects_and_template_layers_skipped() {
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let mut d = doc(200.0, 200.0);
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add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::BLACK));
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let mut hidden = rect_node(Rect::new(60.0, 10.0, 90.0, 50.0), Color::BLACK);
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hidden.visible = false;
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add(&mut d, hidden);
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let t = d.add_layer(Some("Template"));
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if let NodeKind::Layer { template, .. } = &mut d.node_mut(t).unwrap().kind {
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*template = true;
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}
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let mut n = rect_node(Rect::new(100.0, 100.0, 150.0, 150.0), Color::BLACK);
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n.id = d.alloc_id();
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d.insert(Some(t), 0, n).unwrap();
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let mut guide = rect_node(Rect::new(0.0, 0.0, 10.0, 10.0), Color::BLACK);
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if let NodeKind::Path { guide: g, .. } = &mut guide.kind {
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*g = true;
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}
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add(&mut d, guide);
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let out = roundtrip(&d);
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assert_eq!(leaves(&out).len(), 1);
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}
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#[test]
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fn objects_outside_artboard_are_culled() {
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let mut d = doc(100.0, 100.0);
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add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::BLACK));
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add(&mut d, rect_node(Rect::new(500.0, 500.0, 550.0, 550.0), Color::BLACK));
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assert_eq!(leaves(&roundtrip(&d)).len(), 1);
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}
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/// A line from (10, `y`) to (90, `y`).
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fn line(y: f64) -> PathData {
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let mut bp = vectorcraft_geom::BezPath::new();
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bp.move_to((10.0, y));
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bp.line_to((90.0, y));
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PathData::from_bezpath(&bp)
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}
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/// Art that the PDF would hold a value beyond a billion points for is left out: a path that far,
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/// a gradient placed that far, a stroke so wide that its group's box reaches that far, and an
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/// image placed that far. Each would be written with -2,147,483,648, which the PDF writer panics
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/// on in builds with overflow checks.
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#[test]
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fn art_reaching_beyond_a_billion_points_is_left_out() {
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let far = -2_147_483_649.0;
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let shaded = |kind, start, end| {
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let mut n = rect_node(Rect::new(60.0, 10.0, 90.0, 50.0), Color::BLACK);
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let geom = GradientGeom { start, end, aspect: 1.0, focal: None };
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let g = GradientPaint { geom: Some(geom), ..GradientPaint::new(Gradient { kind, ..Gradient::default() }) };
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n.appearance.set_fill(Paint::Gradient(Box::new(g)));
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n
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};
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let mut wide = Node::path(NodeId(0), line(0.0), Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 4_294_967_296.0));
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wide.opacity = 0.5;
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let image = ImageObject {
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key: "img1".into(),
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width: 4,
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height: 2,
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||
xf: Affine::new([5.5e8, 0.0, 0.0, 10.0, far, 60.0]),
|
||
link: None,
|
||
placement: Default::default(),
|
||
};
|
||
for (what, n) in [
|
||
("path", rect_node(Rect::new(far, 60.0, 90.0, 90.0), Color::BLACK)),
|
||
("linear gradient", shaded(GradientKind::Linear, Point::new(far, 0.0), Point::new(90.0, 0.0))),
|
||
("radial gradient", shaded(GradientKind::Radial, Point::new(far, 30.0), Point::new(far + 100.0, 30.0))),
|
||
("stroke", wide),
|
||
("image", Node::new(NodeId(0), NodeKind::Image(Box::new(image)))),
|
||
] {
|
||
let mut d = doc(100.0, 100.0);
|
||
d.images.insert("img1".into(), ImageBlob::new("image/png", tiny_png()));
|
||
add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::BLACK));
|
||
add(&mut d, n);
|
||
assert_eq!(leaves(&roundtrip(&d)).len(), 1, "{what}");
|
||
}
|
||
}
|
||
|
||
/// A dash offset beyond a billion points is written as its remainder after whole periods of the
|
||
/// pattern: -2,147,483,649 (-2,147,483,648 as an f32, which the PDF writer panics on in builds
|
||
/// with overflow checks) is 1 in a pattern of 5 and 5.
|
||
#[test]
|
||
fn dash_offsets_beyond_a_billion_points_wrap_into_their_pattern() {
|
||
let mut d = doc(100.0, 100.0);
|
||
let mut n = Node::path(NodeId(0), line(50.0), Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 2.0));
|
||
n.appearance.stroke_mut().unwrap().dash = Some(Dash { pattern: vec![5.0, 5.0], offset: -2_147_483_649.0, align_corners: false });
|
||
add(&mut d, n);
|
||
assert!(uncompressed(&d).contains("[5 5]1 d"));
|
||
}
|
||
|
||
/// The page of an artboard beyond a billion points is left blank: what is on it would be placed
|
||
/// through -2,147,483,648, which the PDF writer panics on in builds with overflow checks.
|
||
#[test]
|
||
fn artboards_beyond_a_billion_points_export_blank_pages() {
|
||
let mut d = doc(100.0, 100.0);
|
||
d.artboards[0].rect = Rect::new(2_147_483_649.0, 0.0, 2_147_483_749.0, 100.0);
|
||
let mut n = rect_node(Rect::new(2_147_483_659.0, 10.0, 2_147_483_699.0, 50.0), Color::BLACK);
|
||
n.opacity = 0.5;
|
||
add(&mut d, n);
|
||
let bytes = export(&d, &PdfOptions::default()).unwrap();
|
||
assert_eq!(page_count(&bytes), 1);
|
||
assert!(leaves(&import(&bytes).unwrap()).is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn opacity_and_blend_modes() {
|
||
let mut d = doc(200.0, 200.0);
|
||
let mut n = rect_node(Rect::new(10.0, 10.0, 100.0, 100.0), Color::rgb(1.0, 0.0, 0.0));
|
||
n.opacity = 0.5;
|
||
n.blend = BlendMode::Multiply;
|
||
add(&mut d, n);
|
||
let s = uncompressed(&d);
|
||
let s = s.replace(' ', "");
|
||
assert!(s.contains("/BM/Multiply"), "blend mode in ExtGState");
|
||
assert!(s.contains("/ca0.5"), "opacity in ExtGState");
|
||
assert!(s.contains("/Transparency"), "transparency group");
|
||
let out = roundtrip(&d);
|
||
let l = leaves(&out);
|
||
assert_eq!(l.len(), 1);
|
||
// Opacity/blend end up on the object or an enclosing group.
|
||
let mut op = 1.0;
|
||
let mut bm = BlendMode::Normal;
|
||
out.walk(|n| {
|
||
op *= n.opacity * n.appearance.fill().map_or(1.0, |f| f.opacity);
|
||
if n.blend != BlendMode::Normal {
|
||
bm = n.blend;
|
||
}
|
||
});
|
||
assert!((op - 0.5).abs() < 0.01, "{op}");
|
||
assert_eq!(bm, BlendMode::Multiply);
|
||
}
|
||
|
||
#[test]
|
||
fn clip_group_roundtrip() {
|
||
let mut d = doc(200.0, 200.0);
|
||
let clip = Node::new(
|
||
NodeId(0),
|
||
NodeKind::Path {
|
||
path: shapes::ellipse(Rect::new(20.0, 20.0, 120.0, 120.0)),
|
||
rule: FillRule::NonZero,
|
||
live: None,
|
||
clipping: true,
|
||
guide: false,
|
||
},
|
||
);
|
||
let mut clip = clip;
|
||
clip.id = d.alloc_id();
|
||
let mut a = rect_node(Rect::new(0.0, 0.0, 100.0, 100.0), Color::rgb(0.0, 1.0, 0.0));
|
||
a.id = d.alloc_id();
|
||
let mut b = rect_node(Rect::new(50.0, 50.0, 150.0, 150.0), Color::rgb(0.0, 0.0, 1.0));
|
||
b.id = d.alloc_id();
|
||
let g = Node::new(NodeId(0), NodeKind::Group { children: vec![Arc::new(clip), Arc::new(a), Arc::new(b)], clip: true });
|
||
add(&mut d, g);
|
||
let out = roundtrip(&d);
|
||
let mut groups = vec![];
|
||
out.walk(|n| {
|
||
if let NodeKind::Group { clip: true, children } = &n.kind {
|
||
groups.push(children.len());
|
||
}
|
||
});
|
||
assert_eq!(groups, vec![3]);
|
||
let cg = {
|
||
let mut r = None;
|
||
out.walk(|n| {
|
||
if matches!(n.kind, NodeKind::Group { clip: true, .. }) {
|
||
r = n.geometric_bounds();
|
||
}
|
||
});
|
||
r.unwrap()
|
||
};
|
||
assert!(close(cg, Rect::new(20.0, 20.0, 120.0, 120.0), 0.05), "{cg:?}");
|
||
}
|
||
|
||
#[test]
|
||
fn text_exported_as_outlines() {
|
||
let mut d = doc(300.0, 100.0);
|
||
let t = TextObject::point(Point::new(10.0, 50.0), "Hello", CharStyle { size: 24.0, ..CharStyle::default() });
|
||
add(&mut d, Node::new(NodeId(0), NodeKind::Text(Box::new(t))));
|
||
let mut outlined = PdfOptions::uncompressed();
|
||
outlined.settings.advanced.outline_text = true;
|
||
let s = String::from_utf8_lossy(&export(&d, &outlined).unwrap()).into_owned();
|
||
assert!(!s.contains("/Font"), "no fonts when outlining text");
|
||
// Real text in an embedded font by default, as a PDF from Illustrator has it (#733).
|
||
assert!(uncompressed(&d).contains("/FontFile"), "a font embedded by default");
|
||
let r = import_with_report(&export(&d, &outlined).unwrap(), &ImportOptions::default()).unwrap();
|
||
let l = leaves(&r.document);
|
||
assert!(!l.is_empty());
|
||
assert!(l.iter().all(|n| matches!(n.kind, NodeKind::Path { .. })));
|
||
let b = l.iter().fold(None, |acc, n| vectorcraft_geom::union_opt(acc, n.geometric_bounds())).unwrap();
|
||
assert!(b.x0 >= 9.0 && b.x1 < 120.0 && b.y1 <= 56.0 && b.y0 > 25.0, "{b:?}");
|
||
}
|
||
|
||
fn tiny_png() -> Vec<u8> {
|
||
let mut img = image::RgbaImage::new(4, 2);
|
||
for (x, _, p) in img.enumerate_pixels_mut() {
|
||
*p = image::Rgba([if x < 2 { 255 } else { 0 }, 0, 0, 255]);
|
||
}
|
||
let mut out = vec![];
|
||
img.write_to(&mut std::io::Cursor::new(&mut out), image::ImageFormat::Png).unwrap();
|
||
out
|
||
}
|
||
|
||
#[test]
|
||
fn image_roundtrip() {
|
||
let mut d = doc(200.0, 200.0);
|
||
d.images.insert("img1".into(), ImageBlob::new("image/png", tiny_png()));
|
||
let im = ImageObject {
|
||
key: "img1".into(),
|
||
width: 4,
|
||
height: 2,
|
||
xf: Affine::translate((20.0, 30.0)) * Affine::scale(10.0),
|
||
link: None,
|
||
placement: Default::default(),
|
||
};
|
||
add(&mut d, Node::new(NodeId(0), NodeKind::Image(Box::new(im))));
|
||
let out = roundtrip(&d);
|
||
let l = leaves(&out);
|
||
assert_eq!(l.len(), 1);
|
||
let NodeKind::Image(im) = &l[0].kind else { panic!("expected image, got {:?}", l[0].kind_label()) };
|
||
assert_eq!((im.width, im.height), (4, 2));
|
||
assert!(close(l[0].geometric_bounds().unwrap(), Rect::new(20.0, 30.0, 60.0, 50.0), 0.01), "{:?}", l[0].geometric_bounds());
|
||
let blob = &out.images[&im.key];
|
||
let decoded = image::load_from_memory(&blob.bytes).unwrap().to_rgba8();
|
||
assert_eq!(decoded.get_pixel(0, 0).0, [255, 0, 0, 255]);
|
||
assert_eq!(decoded.get_pixel(3, 0).0, [0, 0, 0, 255]);
|
||
}
|
||
|
||
/// Build a PDF with a correct xref table from object bodies.
|
||
fn handmade_pdf(content: &str, media: &str) -> Vec<u8> {
|
||
let objs = [
|
||
"<< /Type /Catalog /Pages 2 0 R >>".to_string(),
|
||
"<< /Type /Pages /Kids [3 0 R] /Count 1 >>".to_string(),
|
||
format!("<< /Type /Page /Parent 2 0 R /MediaBox {media} /Contents 4 0 R /Resources << >> >>"),
|
||
format!("<< /Length {} >>\nstream\n{content}\nendstream", content.len() + 1),
|
||
];
|
||
let mut out = b"%PDF-1.4\n".to_vec();
|
||
let mut offs = vec![];
|
||
for (i, o) in objs.iter().enumerate() {
|
||
offs.push(out.len());
|
||
out.extend(format!("{} 0 obj\n{o}\nendobj\n", i + 1).bytes());
|
||
}
|
||
let xref = out.len();
|
||
out.extend(format!("xref\n0 {}\n0000000000 65535 f \n", objs.len() + 1).bytes());
|
||
for o in offs {
|
||
out.extend(format!("{o:010} 00000 n \n").bytes());
|
||
}
|
||
out.extend(format!("trailer\n<< /Size {} /Root 1 0 R >>\nstartxref\n{xref}\n%%EOF\n", objs.len() + 1).bytes());
|
||
out
|
||
}
|
||
|
||
#[test]
|
||
fn import_handmade_pdf() {
|
||
let content = "1 0 0 RG 0 0 1 rg 3 w 10 10 50 30 re B \
|
||
0 1 1 0 k 100 100 20 20 re f \
|
||
0.5 g q 1 0 0 1 150 0 cm 0 0 m 40 0 l 20 30 l h f Q";
|
||
let bytes = handmade_pdf(content, "[0 0 200 300]");
|
||
let r = import_with_report(&bytes, &ImportOptions::default()).unwrap();
|
||
let d = r.document;
|
||
assert!(close(d.artboards[0].rect, Rect::new(0.0, 0.0, 200.0, 300.0), 1e-9));
|
||
let l = leaves(&d);
|
||
assert_eq!(l.len(), 3);
|
||
// y-up PDF rect (10,10)-(60,40) → y-down (10,260)-(60,290).
|
||
assert!(close(l[0].geometric_bounds().unwrap(), Rect::new(10.0, 260.0, 60.0, 290.0), 1e-6), "{:?}", l[0].geometric_bounds());
|
||
assert_eq!(l[0].appearance.fill_paint().color().unwrap().to_hex(), "#0000ff");
|
||
assert_eq!(l[0].appearance.stroke_paint().color().unwrap().to_hex(), "#ff0000");
|
||
assert!((l[0].appearance.stroke_width() - 3.0).abs() < 1e-6);
|
||
// CMYK red-ish (0,1,1,0) → approximately red through the CMYK profile.
|
||
let [r_, g_, b_] = l[1].appearance.fill_paint().color().unwrap().to_rgb();
|
||
assert!(r_ > 0.8 && g_ < 0.3 && b_ < 0.3, "{r_} {g_} {b_}");
|
||
// Gray 0.5 and the `cm` translation.
|
||
assert_eq!(l[2].appearance.fill_paint().color().unwrap().to_hex(), "#808080");
|
||
assert!(close(l[2].geometric_bounds().unwrap(), Rect::new(150.0, 270.0, 190.0, 300.0), 1e-6));
|
||
}
|
||
|
||
/// Art off the page opens on the pasteboard round its artboard, not cut away (#472).
|
||
#[test]
|
||
fn import_keeps_art_outside_the_page() {
|
||
let content = "0 0 1 rg 10 10 50 30 re f 0 1 0 rg -300 -300 50 50 re f 1 0 0 rg 500 500 20 20 re f";
|
||
let d = import(&handmade_pdf(content, "[0 0 200 300]")).unwrap();
|
||
assert!(close(d.artboards[0].rect, Rect::new(0.0, 0.0, 200.0, 300.0), 1e-9));
|
||
let bounds: Vec<Rect> = leaves(&d).iter().map(|n| n.geometric_bounds().unwrap()).collect();
|
||
let want = [Rect::new(10.0, 260.0, 60.0, 290.0), Rect::new(-300.0, 550.0, -250.0, 600.0), Rect::new(500.0, -220.0, 520.0, -200.0)];
|
||
assert_eq!(bounds.len(), want.len(), "{bounds:?}");
|
||
for (b, w) in bounds.iter().zip(want) {
|
||
assert!(close(*b, w, 1e-6), "{b:?} vs {w:?}");
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn import_invalid_dash_array_strokes_solid() {
|
||
// A dash array with a negative value is invalid (PDF 32000-1 §8.4.3.6): the line is solid. A valid
|
||
// array next to it stays dashed.
|
||
let content = "0 0 1 RG 4 w [-5 3] 0 d 10 10 m 90 10 l S [6 2] 1 d 10 50 m 90 50 l S";
|
||
let d = import(&handmade_pdf(content, "[0 0 100 100]")).unwrap();
|
||
let l = leaves(&d);
|
||
assert_eq!(l.len(), 2);
|
||
let dash = |n: &Node| match &n.appearance.items[..] {
|
||
[.., AppearanceItem::Stroke(st)] => st.dash.clone(),
|
||
items => panic!("no stroke: {items:?}"),
|
||
};
|
||
assert_eq!(dash(l[0]), None);
|
||
assert_eq!(dash(l[1]).map(|d| d.pattern), Some(vec![6.0, 2.0]));
|
||
// And the exporter never writes an invalid array back.
|
||
let mut d2 = doc(100.0, 100.0);
|
||
let mut n = rect_node(Rect::new(10.0, 10.0, 90.0, 90.0), Color::rgb(1.0, 0.0, 0.0));
|
||
n.appearance = Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 2.0).into();
|
||
if let Some(AppearanceItem::Stroke(st)) = n.appearance.items.last_mut() {
|
||
st.dash = Some(Dash { pattern: vec![-5.0, 3.0], offset: 0.0, align_corners: false });
|
||
}
|
||
add(&mut d2, n);
|
||
let s = uncompressed(&d2);
|
||
assert!(!s.contains("-5 3]") && !s.contains("[0 3]"), "invalid dash written:\n{s}");
|
||
}
|
||
|
||
#[test]
|
||
fn import_clip_from_handmade_pdf() {
|
||
let content = "q 0 0 50 50 re W n 1 0 0 rg 0 0 100 100 re f Q";
|
||
let d = import(&handmade_pdf(content, "[0 0 100 100]")).unwrap();
|
||
let mut clip_groups = 0;
|
||
d.walk(|n| {
|
||
if matches!(n.kind, NodeKind::Group { clip: true, .. }) {
|
||
clip_groups += 1;
|
||
assert!(close(n.geometric_bounds().unwrap(), Rect::new(0.0, 50.0, 50.0, 100.0), 1e-6));
|
||
}
|
||
});
|
||
assert_eq!(clip_groups, 1);
|
||
}
|
||
|
||
#[test]
|
||
fn import_max_pages_and_multi_page() {
|
||
let mut d = doc(200.0, 100.0);
|
||
d.artboards.push(Artboard {
|
||
id: 2,
|
||
name: "B".into(),
|
||
rect: Rect::new(300.0, 0.0, 400.0, 400.0),
|
||
show_center_mark: false,
|
||
show_cross_hairs: false,
|
||
});
|
||
add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::BLACK));
|
||
add(&mut d, rect_node(Rect::new(310.0, 10.0, 350.0, 50.0), Color::BLACK));
|
||
let bytes = export(&d, &PdfOptions::default()).unwrap();
|
||
let all = import(&bytes).unwrap();
|
||
assert_eq!(all.artboards.len(), 2);
|
||
assert_eq!(all.layers.len(), 2);
|
||
assert!((all.artboards[1].rect.width() - 100.0).abs() < 1e-9 && (all.artboards[1].rect.height() - 400.0).abs() < 1e-9);
|
||
// The second page's rect lands at the same place relative to its artboard.
|
||
let second = leaves(&all)[1].geometric_bounds().unwrap();
|
||
let ab = all.artboards[1].rect;
|
||
assert!(close(second, Rect::new(ab.x0 + 10.0, 10.0, ab.x0 + 50.0, 50.0), 0.01), "{second:?}");
|
||
let one = import_with_report(&bytes, &ImportOptions { max_pages: Some(1), ..Default::default() }).unwrap();
|
||
assert_eq!(one.document.artboards.len(), 1);
|
||
assert_eq!(leaves(&one.document).len(), 1);
|
||
}
|
||
|
||
#[test]
|
||
fn import_rejects_garbage() {
|
||
assert!(matches!(import(b"not a pdf at all"), Err(PdfError::Parse(_)) | Err(PdfError::NoPages)));
|
||
}
|
||
|
||
/// Options with `settings` changed by `f`.
|
||
fn with(f: impl FnOnce(&mut PdfSettings)) -> PdfOptions {
|
||
let mut o = PdfOptions::default();
|
||
f(&mut o.settings);
|
||
o
|
||
}
|
||
|
||
#[test]
|
||
fn compatibility_levels() {
|
||
let mut d = doc(100.0, 100.0);
|
||
add(&mut d, rect_node(Rect::new(10.0, 10.0, 50.0, 50.0), Color::rgb(1.0, 0.0, 0.0)));
|
||
for (c, header) in [(Compatibility::Pdf14, "%PDF-1.4"), (Compatibility::Pdf16, "%PDF-1.6"), (Compatibility::Pdf20, "%PDF-2.0")] {
|
||
let b = export(&d, &with(|s| s.compatibility = c)).unwrap();
|
||
assert!(b.starts_with(header.as_bytes()), "{c:?}");
|
||
}
|
||
let a = export(&d, &with(|s| s.standard = Standard::PdfA2b)).unwrap();
|
||
assert!(String::from_utf8_lossy(&a).contains("pdfaid"), "PDF/A identification in XMP");
|
||
// PDF/X files are PDF 1.3 (PDF/X-1a, PDF/X-3) or at most 1.6 (PDF/X-4): not the default 1.7.
|
||
for (x, header) in [(Standard::PdfX1a, "%PDF-1.3"), (Standard::PdfX3, "%PDF-1.3"), (Standard::PdfX4, "%PDF-1.6")] {
|
||
assert!(matches!(export(&d, &with(|s| s.standard = x)), Err(PdfError::BadSetting(_))), "{x:?}");
|
||
let b = export(&d, &with(|s| (s.standard, s.compatibility) = (x, x.version()))).unwrap();
|
||
assert!(b.starts_with(header.as_bytes()), "{x:?}");
|
||
}
|
||
// PDF/A-2b is a PDF 1.7 standard.
|
||
let e = export(&d, &with(|s| (s.standard, s.compatibility) = (Standard::PdfA2b, Compatibility::Pdf20)));
|
||
assert!(matches!(e, Err(PdfError::BadSetting(_))), "{e:?}");
|
||
}
|
||
|
||
#[test]
|
||
fn compress_option_changes_output() {
|
||
let mut d = doc(100.0, 100.0);
|
||
for i in 0..20 {
|
||
add(&mut d, rect_node(Rect::new(i as f64, i as f64, 50.0 + i as f64, 50.0), Color::BLACK));
|
||
}
|
||
let c = export(&d, &PdfOptions::default()).unwrap();
|
||
let u = export(&d, &PdfOptions::uncompressed()).unwrap();
|
||
assert!(u.len() > c.len());
|
||
assert!(String::from_utf8_lossy(&u).contains(" re") || String::from_utf8_lossy(&u).contains(" l"));
|
||
}
|
||
|
||
#[test]
|
||
fn stroke_alignment_and_arrowheads_export() {
|
||
let mut d = doc(200.0, 200.0);
|
||
let mut p = Node::path(
|
||
NodeId(0),
|
||
shapes::rectangle(Rect::new(20.0, 20.0, 120.0, 120.0)),
|
||
Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 6.0),
|
||
);
|
||
p.appearance.stroke_mut().unwrap().align = vectorcraft_doc::StrokeAlign::Inside;
|
||
add(&mut d, p);
|
||
let mut line = Node::path(
|
||
NodeId(0),
|
||
shapes::line(Point::new(10.0, 150.0), Point::new(150.0, 150.0)),
|
||
Appearance::basic(Paint::None, Paint::solid(Color::BLACK), 2.0),
|
||
);
|
||
line.appearance.stroke_mut().unwrap().end_arrow = Some(vectorcraft_doc::Arrowhead::Triangle);
|
||
add(&mut d, line);
|
||
let r = export_with_report(&d, &PdfOptions::default()).unwrap();
|
||
let out = import(&r.bytes).unwrap();
|
||
let mut widths = vec![];
|
||
out.walk(|n| {
|
||
if let Some(AppearanceItem::Stroke(s)) = n.appearance.items.iter().find(|i| matches!(i, AppearanceItem::Stroke(_))) {
|
||
widths.push(s.width);
|
||
}
|
||
});
|
||
assert!(widths.iter().any(|w| (w - 12.0).abs() < 1e-3), "inside stroke doubled and clipped: {widths:?}");
|
||
// The arrowhead is an extra filled object.
|
||
assert!(leaves(&out).len() >= 3);
|
||
}
|
||
|
||
#[test]
|
||
fn creation_date_written() {
|
||
let d = doc(100.0, 100.0);
|
||
// 2024-02-29 12:34:56 UTC
|
||
let bytes = export(&d, &PdfOptions { created: Some(1_709_210_096), ..PdfOptions::uncompressed() }).unwrap();
|
||
assert!(String::from_utf8_lossy(&bytes).contains("D:20240229123456"));
|
||
}
|
||
|
||
#[test]
|
||
fn opacity_mask_exports_as_luminosity_soft_mask() {
|
||
let mut d = doc(100.0, 100.0);
|
||
let mut n = rect_node(Rect::new(10.0, 10.0, 90.0, 90.0), Color::rgb(1.0, 0.0, 0.0));
|
||
let art = rect_node(Rect::new(10.0, 10.0, 50.0, 90.0), Color::WHITE);
|
||
n.extras_mut().mask = Some(Box::new(vectorcraft_doc::OpacityMask::new(art, true)));
|
||
add(&mut d, n);
|
||
let bytes = export(&d, &PdfOptions::uncompressed()).unwrap();
|
||
let text = String::from_utf8_lossy(&bytes);
|
||
assert!(text.contains("/SMask"), "soft mask in an ExtGState");
|
||
assert!(text.contains("/Luminosity"));
|
||
}
|
||
|
||
/// A function or colour space built on itself is refused before the interpreter builds it (by
|
||
/// recursion, with no cap: a stack overflow), and those of real files are read.
|
||
#[test]
|
||
fn functions_and_colour_spaces_built_on_themselves_are_refused() {
|
||
use vectorcraft_testkit::pdf::{PdfPage, first_extra, pdf_with};
|
||
let first = first_extra(1);
|
||
let (me, next) = (format!("{first} 0 R"), format!("{} 0 R", first + 1));
|
||
let shaded = PdfPage {
|
||
resources: format!("/Shading << /S << /ShadingType 2 /ColorSpace /DeviceRGB /Coords [0 0 100 0] /Function {me} >> >>"),
|
||
..PdfPage::new(100.0, 100.0, "/S sh")
|
||
};
|
||
let filled = PdfPage { resources: format!("/ColorSpace << /C {me} >>"), ..PdfPage::new(100.0, 100.0, "/C cs 0 sc 0 0 50 50 re f") };
|
||
let stitch = |on: &str| format!("<< /FunctionType 3 /Domain [0 1] /Functions [{on}] /Bounds [] /Encode [0 1] >>");
|
||
let indexed = |on: &str| format!("[/Indexed {on} 1 <000000ffffff>]");
|
||
let ramp = "<< /FunctionType 2 /Domain [0 1] /C0 [1 0 0] /C1 [0 0 1] /N 1 >>";
|
||
// `n` functions, each stitching the next, then a plain one.
|
||
let chain = |n: usize| (1..=n).map(|i| stitch(&format!("{} 0 R", first + i))).chain([ramp.to_string()]).collect::<Vec<_>>();
|
||
let calculator =
|
||
|program: &str| format!("<< /FunctionType 4 /Domain [0 1] /Range [0 1 0 1 0 1] /Length {} >>\nstream\n{program}\nendstream", program.len());
|
||
for (what, page, objects) in [
|
||
("a function stitching itself", &shaded, vec![stitch(&me)]),
|
||
("two functions stitching each other", &shaded, vec![stitch(&next), stitch(&me)]),
|
||
("twenty functions, each stitching the next", &shaded, chain(20)),
|
||
("procedures in procedures", &shaded, vec![calculator(&format!("{}{}", "{".repeat(100), "}".repeat(100)))]),
|
||
("a colour space on itself", &filled, vec![indexed(&me)]),
|
||
("two colour spaces on each other", &filled, vec![indexed(&next), indexed(&me)]),
|
||
] {
|
||
let objects: Vec<&str> = objects.iter().map(String::as_str).collect();
|
||
let e = import(&pdf_with(std::slice::from_ref(page), &objects, None)).err().map(|e| e.to_string());
|
||
assert!(e.as_deref().is_some_and(|e| e.contains("built on one another without end")), "{what}: {e:?}");
|
||
}
|
||
for (what, page, objects) in [
|
||
("a function stitching one", &shaded, vec![stitch(&next), ramp.to_string()]),
|
||
("three functions, each stitching the next", &shaded, chain(3)),
|
||
("a calculator function", &shaded, vec![calculator("{ dup 1 exch sub 0 }")]),
|
||
("an indexed colour space", &filled, vec![indexed("/DeviceRGB")]),
|
||
] {
|
||
let objects: Vec<&str> = objects.iter().map(String::as_str).collect();
|
||
let d = import(&pdf_with(std::slice::from_ref(page), &objects, None)).unwrap_or_else(|e| panic!("{what}: {e}"));
|
||
assert!(d.layers.iter().any(|l| l.children().is_some_and(|c| !c.is_empty())), "{what}: its art is read");
|
||
}
|
||
}
|