mirror of
https://github.com/storytold/vectorcraft.git
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dotCooCooandGert Pellin
1b744eae52
A fourth gradient kind, conic (also accepted as `angle` or `conical`), sweeps the stops once around the center (the gradient's start), clockwise on the page from the vector, with a seam where the last stop meets the first. A negative aspect mirrors the sweep, and reflecting an object turns its sweep the other way, also for a conic without a vector or with a flat extent. - Gradient panel: a Conic button in the Type row; the Aspect Ratio field works for conic gradients and keeps a mirrored sweep mirrored. - Gradient tool: the extent ellipse, aspect handle and center ring of a radial gradient, without a focal point. - Rendering, swatch chips, transforms, warps, plug-in round trips, and Object > Expand into wedges or a mesh of columns around the center. - Commands: a negative `aspect` is an error for linear and radial gradients, and so is a `focal` point for a conic gradient. - PDF export writes a function-based shading whose calculator function turns the angle into the ramp, and PDF import reads a function-based shading that turns around the origin of its space back as a conic gradient, also when that origin lies outside the painted area. A PDF/A file, or a conic with more than 97 stops, gets an image instead. - SVG export writes 360 solid wedges clipped to the shape for opaque stops and an image otherwise, and a linear gradient on characters. - CSS export writes `conic-gradient(from ...)`, with the stops mirrored for a mirrored sweep. - EPS and legacy .ai export write 360 solid wedges; the .ai editing data holds a linear gradient along the vector with the same stops. - .af files: conical gradients open as conic gradients. - An export that writes the gradient in another form gives a warning. Supersedes #2326 and includes switch87's code from it. Co-authored-by: Gert Pellin <gert@pellin.be>
564 lines
28 KiB
Rust
564 lines
28 KiB
Rust
//! Affinity documents: native import (layers, artboards, curves, paints) through Open, Place and
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//! templates, and the embedded preview only as an explicitly warned fallback.
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use super::*;
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use proptest::prelude::*;
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use serde_json::json;
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use std::io::Cursor;
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fn png() -> Vec<u8> {
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let im = image::RgbaImage::from_fn(2, 1, |x, _| if x == 0 { image::Rgba([220, 40, 60, 255]) } else { image::Rgba([0, 0, 0, 0]) });
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let mut bytes = Vec::new();
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im.write_to(&mut Cursor::new(&mut bytes), image::ImageFormat::Png).unwrap();
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bytes
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}
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/// Synthetic envelope without a native object graph; not a native Affinity writer.
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fn file(png: &[u8]) -> Vec<u8> {
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let mut b = vec![0; 72];
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b[..4].copy_from_slice(vectorcraft_affinity::MAGIC);
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b[4..6].copy_from_slice(&12u16.to_le_bytes());
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b[8..12].copy_from_slice(b"nsrP");
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b[12..16].copy_from_slice(b"#Inf");
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b[24..32].copy_from_slice(&72u64.to_le_bytes());
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b[64..68].copy_from_slice(b"Prot");
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b.extend(b"\xff\xff\xff\xffThmb");
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b.extend(1u32.to_le_bytes());
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b.extend((png.len() as u32 + 13).to_le_bytes());
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b.extend(29u32.to_le_bytes());
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b.extend(0u32.to_le_bytes());
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b.extend((png.len() as u32).to_le_bytes());
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b.push(1);
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b.extend(png);
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b
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}
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#[test]
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fn preview_opens_with_a_warning_and_never_saves_to_the_source() {
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let mut s = Session::new();
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let bytes = file(&png());
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for name in ["drawing.af", "renamed.png", "unknown"] {
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let result = open_bytes(&mut s, name, &bytes, Some(format!("/source/{name}"))).unwrap();
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assert_eq!(result["format"], "affinity");
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let w = result["warnings"][0].as_str().unwrap();
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assert!(w.contains("2×1") && w.contains("native Affinity document could not be read") && w.contains("no layers"), "{w}");
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let st = s.doc().unwrap();
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assert!(st.path.is_none());
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assert_eq!(st.format, "vectorcraft");
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assert_eq!((st.doc.artboards[0].rect.width(), st.doc.artboards[0].rect.height()), (2.0, 1.0));
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assert_eq!(st.doc.images.values().next().unwrap().bytes.as_slice(), png());
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let saved = vectorcraft_format::save_file(&st.doc);
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let reopened = vectorcraft_format::load_file(&saved).unwrap();
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assert_eq!(reopened.doc.images, st.doc.images);
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let plan = save_plan(&s, SaveMode::Save, &json!({})).unwrap();
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assert!(plan.path.is_none(), "Save must ask for a new destination");
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assert_eq!(plan.format.id, "vectorcraft");
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assert!(plan.name.ends_with(".vectorcraft"));
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}
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let f = format("affinity").unwrap();
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assert!(f.read && !f.write);
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for ext in ["af", "afdesign", "afpub"] {
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assert!(OPEN_EXTS.contains(&ext) && PLACE_EXTS.contains(&ext), "{ext}");
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}
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assert!(!SAVE_FORMATS.contains(&"affinity"));
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assert!(s.execute("document.serialize", &json!({"format":"af"})).is_err());
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assert!(s.execute("document.export", &json!({"format":"affinity"})).is_err());
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assert!(save_format(None, Some("drawing.af")).is_err());
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}
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#[test]
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fn preview_reaches_the_document_open_command() {
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let mut s = Session::new();
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let r = s.execute("document.open", &json!({"name":"test.af", "dataBase64":vectorcraft_format::base64_encode(&file(&png()))})).unwrap();
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assert_eq!(r["format"], "affinity");
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assert_eq!(r["warnings"].as_array().unwrap().len(), 1);
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}
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#[test]
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fn placing_a_preview_is_rejected_even_when_renamed_or_queued() {
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let mut s = Session::new();
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s.execute("file.new", &json!({"width":100,"height":100})).unwrap();
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let original = s.doc().unwrap().doc.clone();
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for name in ["test.af", "renamed.png", "renamed.txt"] {
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let p = json!({"name":name, "dataBase64":vectorcraft_format::base64_encode(&file(&png())), "link":true});
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for cmd in ["file.place", "file.place.info"] {
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let e = s.execute(cmd, &p).unwrap_err().to_string();
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assert!(e.contains("File › Open") && e.contains("embedded preview"), "{e}");
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}
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let e = s.execute("file.place.queue", &json!({"files":[p]})).unwrap_err().to_string();
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assert!(e.contains("File › Open") && e.contains("embedded preview"), "{e}");
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}
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assert_eq!(s.doc().unwrap().doc, original);
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}
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#[test]
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fn templates_and_libraries_cannot_silently_extract_preview_content() {
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let mut s = Session::new();
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s.execute("file.new", &json!({"width":100,"height":100})).unwrap();
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let original = s.doc().unwrap().doc.clone();
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for name in ["test.af", "renamed.svg"] {
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let p = json!({"name":name, "dataBase64":vectorcraft_format::base64_encode(&file(&png()))});
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for cmd in
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["file.newFromTemplate", "swatch.library.load", "graphicStyle.loadLibrary", "charStyle.load", "paraStyle.load", "textStyle.loadAll"]
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{
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let e = s.execute(cmd, &p).unwrap_err().to_string();
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assert!(e.contains("File › Open"), "{cmd}: {e}");
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}
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}
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assert_eq!(s.documents().len(), 1);
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assert_eq!(s.doc().unwrap().doc, original);
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}
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#[test]
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fn malformed_crc_and_every_truncation_fail() {
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let b = file(&png());
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for end in 0..b.len() {
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assert!(load("bad.af", &b[..end]).is_err(), "{end}");
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}
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let mut crc = b.clone();
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crc[130] ^= 1;
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assert!(load("bad.af", &crc).is_err());
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// Affinity 1 and 2 (container versions 8 to 11) store the same preview record.
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let mut legacy = b.clone();
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legacy[4..6].copy_from_slice(&10u16.to_le_bytes());
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assert!(load("old.afdesign", &legacy).is_ok());
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let mut unknown = b.clone();
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unknown[4..6].copy_from_slice(&13u16.to_le_bytes());
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assert!(load("new.af", &unknown).err().unwrap().to_string().contains("unknown container version"));
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}
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#[test]
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fn end_and_post_image_chunk_crcs_cannot_escape_pixel_decoding() {
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let mut end_crc = png();
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*end_crc.last_mut().unwrap() ^= 1;
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assert!(load("bad-end.af", &file(&end_crc)).is_err());
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let body = b"Note\0Synthetic";
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let mut text = (body.len() as u32).to_be_bytes().to_vec();
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text.extend(b"tEXt");
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text.extend(body);
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let mut h = crc32fast::Hasher::new();
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h.update(b"tEXt");
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h.update(body);
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text.extend(h.finalize().to_be_bytes());
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let mut post_image = png();
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let at = post_image.len() - 12;
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post_image.splice(at..at, text);
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assert!(load("valid-text.af", &file(&post_image)).is_ok());
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post_image[at + 8 + body.len()] ^= 1;
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assert!(load("bad-text.af", &file(&post_image)).is_err());
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}
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#[test]
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fn a_previewless_file_fails_without_replacing_the_active_document() {
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let mut s = Session::new();
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s.execute("file.new", &json!({"width":100,"height":100})).unwrap();
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let original = s.doc().unwrap().doc.clone();
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let mut bytes = file(&png());
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bytes[24..32].copy_from_slice(&0u64.to_le_bytes());
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let e = s.execute("document.open", &json!({"name":"no-preview.af", "dataBase64":vectorcraft_format::base64_encode(&bytes)})).unwrap_err();
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assert!(e.to_string().contains("no embedded preview"));
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assert_eq!(s.documents().len(), 1);
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assert_eq!(s.doc().unwrap().doc, original);
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}
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proptest! {
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#![proptest_config(ProptestConfig::with_cases(128))]
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#[test]
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fn bounded_mutations_do_not_panic(edits in prop::collection::vec((0usize..300, any::<u8>()), 0..16)) {
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let mut b = file(&png());
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for (i, value) in edits { if let Some(byte) = b.get_mut(i) { *byte = value; } }
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let _ = load("mutated.af", &b);
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}
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}
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mod native {
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use super::*;
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use vectorcraft_affinity::synth::{self, F, Method, tag};
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use vectorcraft_doc::{NodeKind, appearance::AppearanceItem};
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fn rgba(r: f32, g: f32, b: f32, a: f32) -> F {
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F::Struct([r, g, b, a].iter().flat_map(|v| v.to_le_bytes()).collect())
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}
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fn solid(id: u32, c: F) -> F {
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F::Def(
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id,
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vec![tag(b"FDsc")],
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vec![(
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tag(b"FDeF"),
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F::Def(id + 1, vec![tag(b"FilS")], vec![(tag(b"Colr"), F::Def(id + 2, vec![tag(b"RGBA")], vec![(tag(b"_col"), c)]))]),
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)],
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)
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}
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fn node(x: f64, y: f64, kind: u8, role: u8) -> Vec<u8> {
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let mut r = x.to_le_bytes().to_vec();
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r.extend(y.to_le_bytes());
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r.extend([kind, role]);
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r
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}
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/// A version-12 document at 144 ppi: an artboard "Board" (moved 20, 10) holding a closed
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/// triangle with a red fill and a 4 px blue stroke, and a hidden ellipse on a layer.
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pub(super) fn document(method: Method) -> Vec<u8> {
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let triangle = F::Def(
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20,
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vec![tag(b"PCrv"), tag(b"VNod"), tag(b"Node")],
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vec![
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(tag(b"Desc"), F::Str("Triangle".into())),
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(
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tag(b"Crvs"),
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F::Obj(
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tag(b"PCvD"),
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vec![(
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tag(b"Data"),
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F::Pos(vec![
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F::U8(0),
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F::U32(1),
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F::Bool(true),
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F::Records(18, vec![node(0.0, 0.0, 1, 0), node(100.0, 0.0, 1, 0), node(50.0, 80.0, 1, 0), node(0.0, 0.0, 1, 0)]),
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]),
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)],
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),
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),
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(tag(b"BFFl"), F::Shared(vec![solid(21, rgba(1.0, 0.0, 0.0, 1.0))])),
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(tag(b"LIFl"), F::Shared(vec![solid(24, rgba(0.0, 0.0, 1.0, 1.0))])),
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(
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tag(b"LILn"),
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F::Shared(vec![F::Def(
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27,
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vec![tag(b"LDsc")],
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vec![(tag(b"LDeL"), F::Def(28, vec![tag(b"LSty")], vec![(tag(b"Wght"), F::F64(4.0))])), (tag(b"LDSc"), F::Bool(true))],
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)]),
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),
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],
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);
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let board = F::Def(
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10,
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vec![tag(b"ShpN"), tag(b"VNod"), tag(b"Node")],
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vec![
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(tag(b"Desc"), F::Str("Board".into())),
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(tag(b"ABEn"), F::Bool(true)),
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(tag(b"Shpe"), F::Def(11, vec![tag(b"ShNR")], vec![])),
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(tag(b"ShpB"), F::F64s(vec![0.0, 0.0, 200.0, 100.0])),
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(tag(b"Xfrm"), F::F64s(vec![1.0, 0.0, 20.0, 0.0, 1.0, 10.0])),
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(tag(b"BFFl"), F::Shared(vec![solid(12, rgba(1.0, 1.0, 1.0, 1.0))])),
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(tag(b"Chld"), F::Shared(vec![triangle])),
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],
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);
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let ellipse = F::Def(
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40,
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vec![tag(b"ShpN")],
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vec![
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(tag(b"Visi"), F::Bool(false)),
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(tag(b"Shpe"), F::Def(41, vec![tag(b"ShpE")], vec![])),
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(tag(b"ShpB"), F::F64s(vec![300.0, 0.0, 400.0, 50.0])),
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(tag(b"BFFl"), F::Shared(vec![F::Def(42, vec![tag(b"FDsc")], vec![(tag(b"FDeF"), F::Def(43, vec![tag(b"FilN")], vec![]))])])),
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],
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);
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let layer = F::Def(30, vec![tag(b"Scop")], vec![(tag(b"Desc"), F::Str("Shapes".into())), (tag(b"Chld"), F::Shared(vec![ellipse]))]);
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let spread =
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F::Def(2, vec![tag(b"Sprd")], vec![(tag(b"SprB"), F::F64s(vec![0.0, 0.0, 420.0, 120.0])), (tag(b"Chld"), F::Shared(vec![board, layer]))]);
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let doc = synth::stream(&[
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(tag(b"UVCn"), F::Obj(tag(b"UVCn"), vec![(tag(b"UPPI"), F::F64(144.0))])),
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(tag(b"DocR"), F::Def(1, vec![tag(b"DocN")], vec![(tag(b"Chld"), F::Shared(vec![spread]))])),
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]);
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synth::container(&[("doc.dat", &doc, method)], Some(&png()))
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}
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/// A version-12 document at 144 ppi holding a 100 px square filled with a red-to-blue conical
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/// gradient centered at (50, 40) px, 40 px across: its unit +y points down the page, or up
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/// (`mirror`).
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fn conical_document(mirror: bool) -> Vec<u8> {
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let stop = |id: u32, c: F| F::Def(id, vec![tag(b"RGBA")], vec![(tag(b"_col"), c)]);
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let positions = [[0.0f32, 0.5], [1.0, 0.5]].iter().map(|p| p.iter().flat_map(|v| v.to_le_bytes()).collect()).collect();
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let grad = F::Obj(
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tag(b"Grad"),
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vec![
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(tag(b"Cols"), F::Shared(vec![stop(23, rgba(1.0, 0.0, 0.0, 1.0)), stop(24, rgba(0.0, 0.0, 1.0, 1.0))])),
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(tag(b"Posn"), F::Records(8, positions)),
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],
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);
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let fill = F::Def(22, vec![tag(b"FilG")], vec![(tag(b"Type"), F::Enum(3, 0)), (tag(b"Grad"), grad)]);
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let unit = F::F64s(vec![40.0, 0.0, 50.0, 0.0, if mirror { -40.0 } else { 40.0 }, 40.0]);
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let gradient = F::Def(21, vec![tag(b"FDsc")], vec![(tag(b"FDeX"), unit), (tag(b"FDeF"), fill)]);
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let square = F::Def(
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20,
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vec![tag(b"ShpN")],
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vec![
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(tag(b"Shpe"), F::Def(25, vec![tag(b"ShNR")], vec![])),
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(tag(b"ShpB"), F::F64s(vec![0.0, 0.0, 100.0, 100.0])),
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(tag(b"BFFl"), F::Shared(vec![gradient])),
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],
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);
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let spread =
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F::Def(2, vec![tag(b"Sprd")], vec![(tag(b"SprB"), F::F64s(vec![0.0, 0.0, 200.0, 200.0])), (tag(b"Chld"), F::Shared(vec![square]))]);
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let doc = synth::stream(&[
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(tag(b"UVCn"), F::Obj(tag(b"UVCn"), vec![(tag(b"UPPI"), F::F64(144.0))])),
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(tag(b"DocR"), F::Def(1, vec![tag(b"DocN")], vec![(tag(b"Chld"), F::Shared(vec![spread]))])),
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]);
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synth::container(&[("doc.dat", &doc, Method::Stored)], Some(&png()))
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}
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#[test]
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fn conical_gradients_open_as_conic_gradients() {
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use vectorcraft_color::{GradientKind, Paint};
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for mirror in [false, true] {
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let mut s = Session::new();
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let r = open_bytes(&mut s, "conic.af", &conical_document(mirror), None).unwrap();
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assert!(r["warnings"].as_array().unwrap().iter().all(|w| !w.as_str().unwrap().contains("conical")), "{r}");
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let mut paint = None;
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s.doc().unwrap().doc.walk(|n| {
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if let Paint::Gradient(g) = n.appearance.fill_paint() {
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paint = Some(g.clone());
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}
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});
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let g = paint.expect("a gradient fill");
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assert_eq!(g.gradient.kind, GradientKind::Conic);
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let geom = g.geom.unwrap();
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// At 144 ppi: centered at (25, 20) pt, 20 pt across, red where the sweep starts.
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assert!(geom.start.distance(kurbo::Point::new(25.0, 20.0)) < 1e-9 && (geom.length() - 20.0).abs() < 1e-9, "{geom:?}");
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assert_eq!(geom.is_mirrored(), mirror, "{geom:?}");
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// A quarter turn on lies along the unit +y: below the center, or above it mirrored.
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let quarter = kurbo::Point::new(25.0, if mirror { 10.0 } else { 30.0 });
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assert!((geom.param_at(GradientKind::Conic, quarter) - 0.25).abs() < 1e-9, "{geom:?}");
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assert_eq!(g.gradient.stops[0].color.to_hex(), "#ff0000");
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}
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}
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#[test]
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fn layers_artboards_curves_and_paints_open_as_editable_art() {
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for method in [Method::Stored, Method::Zlib, Method::Zstd] {
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let mut s = Session::new();
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let r = open_bytes(&mut s, "native.af", &document(method), Some("/source/native.af".into())).unwrap();
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assert_eq!(r["format"], "affinity");
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// Affinity Photo's extension isn't listed, but its documents still open by their content.
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assert_eq!(open_bytes(&mut Session::new(), "native.afphoto", &document(method), None).unwrap()["format"], "affinity");
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assert!(r["warnings"].as_array().unwrap().iter().all(|w| !w.as_str().unwrap().contains("preview")), "{r}");
|
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let st = s.doc().unwrap();
|
||
assert!(st.path.is_none(), "Save must not write back over the Affinity file");
|
||
let d = &st.doc;
|
||
// 144 ppi: two document pixels per point.
|
||
assert_eq!(d.artboards.len(), 1);
|
||
assert_eq!(d.artboards[0].name, "Board");
|
||
assert_eq!(d.artboards[0].rect, kurbo::Rect::new(10.0, 5.0, 110.0, 55.0));
|
||
let names: Vec<_> = d.layers.iter().map(|l| l.name.clone().unwrap()).collect();
|
||
assert_eq!(names, ["Board", "Shapes"]);
|
||
let NodeKind::Layer { children, .. } = &d.layers[0].kind else { panic!() };
|
||
let NodeKind::Group { children: clipped, clip: true } = &children[0].kind else { panic!("{:?}", children[0].kind) };
|
||
let NodeKind::Path { clipping: true, .. } = &clipped[0].kind else { panic!() };
|
||
let tri = &clipped[1];
|
||
assert_eq!(tri.name.as_deref(), Some("Triangle"));
|
||
let NodeKind::Path { path, .. } = &tri.kind else { panic!() };
|
||
let pts: Vec<_> = path.subpaths[0].anchors.iter().map(|a| (a.p.x, a.p.y)).collect();
|
||
assert_eq!(pts, [(10.0, 5.0), (60.0, 5.0), (35.0, 45.0)]);
|
||
assert!(path.subpaths[0].closed);
|
||
let [AppearanceItem::Fill(f), AppearanceItem::Stroke(k)] = tri.appearance.items.as_slice() else { panic!("{:?}", tri.appearance) };
|
||
assert_eq!(f.paint, vectorcraft_color::Paint::solid(vectorcraft_color::Color::Rgb { r: 1.0, g: 0.0, b: 0.0 }));
|
||
assert_eq!(k.width, 2.0);
|
||
let NodeKind::Layer { children, .. } = &d.layers[1].kind else { panic!() };
|
||
assert!(!children[0].visible, "hidden layers stay hidden");
|
||
}
|
||
}
|
||
|
||
/// A version-12 document holding an open curve with an 8 px stroke whose pressure curve (`LDeP`)
|
||
/// is made of `records`.
|
||
fn pressure_document(records: Vec<Vec<u8>>) -> Vec<u8> {
|
||
pressure_documents(records, 1)
|
||
}
|
||
|
||
/// [`pressure_document`] with `copies` curves, all linking the first one's fill and stroke.
|
||
fn pressure_documents(records: Vec<Vec<u8>>, copies: u32) -> Vec<u8> {
|
||
let mut style = Some((
|
||
solid(24, rgba(0.0, 0.0, 0.0, 1.0)),
|
||
F::Def(
|
||
27,
|
||
vec![tag(b"LDsc")],
|
||
vec![
|
||
(tag(b"LDeL"), F::Def(28, vec![tag(b"LSty")], vec![(tag(b"Wght"), F::F64(8.0))])),
|
||
(tag(b"LDSc"), F::Bool(false)),
|
||
(tag(b"LDeP"), F::Obj(tag(b"CrvD"), vec![(tag(b"Data"), F::Pos(vec![F::U32(0), F::Bool(false), F::Records(18, records)]))])),
|
||
],
|
||
),
|
||
));
|
||
let lines = (0..copies)
|
||
.map(|i| {
|
||
let (fill, line) = style.take().unwrap_or((F::Ref(24), F::Ref(27)));
|
||
F::Def(
|
||
if i == 0 { 20 } else { 1000 + i },
|
||
vec![tag(b"PCrv"), tag(b"VNod"), tag(b"Node")],
|
||
vec![
|
||
(
|
||
tag(b"Crvs"),
|
||
F::Obj(
|
||
tag(b"PCvD"),
|
||
vec![(
|
||
tag(b"Data"),
|
||
F::Pos(vec![
|
||
F::U8(0),
|
||
F::U32(1),
|
||
F::Bool(false),
|
||
F::Records(18, vec![node(0.0, 0.0, 1, 0), node(100.0, 0.0, 1, 0)]),
|
||
]),
|
||
)],
|
||
),
|
||
),
|
||
(tag(b"LIFl"), F::Shared(vec![fill])),
|
||
(tag(b"LILn"), F::Shared(vec![line])),
|
||
],
|
||
)
|
||
})
|
||
.collect();
|
||
let spread = F::Def(2, vec![tag(b"Sprd")], vec![(tag(b"SprB"), F::F64s(vec![0.0, 0.0, 200.0, 100.0])), (tag(b"Chld"), F::Shared(lines))]);
|
||
let doc = synth::stream(&[
|
||
(tag(b"UVCn"), F::Obj(tag(b"UVCn"), vec![(tag(b"UPPI"), F::F64(72.0))])),
|
||
(tag(b"DocR"), F::Def(1, vec![tag(b"DocN")], vec![(tag(b"Chld"), F::Shared(vec![spread]))])),
|
||
]);
|
||
synth::container(&[("doc.dat", &doc, Method::Zstd)], Some(&png()))
|
||
}
|
||
|
||
/// The width profile of the only stroked path in `d`.
|
||
fn stroke_of(d: &vectorcraft_doc::Document) -> vectorcraft_doc::appearance::StrokeLayer {
|
||
let mut found = None;
|
||
d.walk(|n| {
|
||
if let Some(AppearanceItem::Stroke(k)) = n.appearance.items.iter().find(|i| matches!(i, AppearanceItem::Stroke(_))) {
|
||
found = Some(k.clone());
|
||
}
|
||
});
|
||
found.unwrap_or_else(|| panic!("no stroke in {:?}", d.layers))
|
||
}
|
||
|
||
#[test]
|
||
fn a_pressure_curve_becomes_the_strokes_width_profile() {
|
||
// Thin at the start, full width from half way: anchor (0, 0), handles (0.25, 0.5) and
|
||
// (0.5, 1), anchor (0.5, 1), then straight on to anchor (1, 1).
|
||
let curve = vec![node(0.0, 0.0, 4, 0), node(0.25, 0.5, 0, 1), node(0.5, 1.0, 0, 2), node(0.5, 1.0, 4, 0), node(1.0, 1.0, 4, 0)];
|
||
let r = load("pressure.af", &pressure_document(curve)).unwrap();
|
||
assert!(!r.preview_only);
|
||
assert!(r.warnings.iter().all(|w| !w.contains("pressure")), "{:?}", r.warnings);
|
||
let k = stroke_of(&r.doc);
|
||
assert_eq!(k.width, 8.0);
|
||
let profile = k.profile.unwrap_or_else(|| panic!("the pressure curve is read: {:?}", r.warnings));
|
||
assert_eq!(profile.points.first(), Some(&(0.0, 0.0, 0.0)));
|
||
assert_eq!(profile.points.last(), Some(&(1.0, 1.0, 1.0)));
|
||
assert!(profile.points.windows(2).all(|w| w[0].0 <= w[1].0), "positions go forward: {:?}", profile.points);
|
||
let (left, right) = profile.at(0.25);
|
||
assert!(left > 0.25 && left < 1.0 && left == right, "{left} {right}");
|
||
assert_eq!(profile.at(0.75), (1.0, 1.0));
|
||
|
||
// Widths past the full weight are held at it.
|
||
let huge = vec![node(0.0, 0.0, 4, 0), node(0.5, 1e300, 4, 0), node(1.0, 0.0, 4, 0)];
|
||
let profile = stroke_of(&load("huge.af", &pressure_document(huge)).unwrap().doc).profile.unwrap();
|
||
assert!(profile.points.iter().all(|p| (0.0..=1.0).contains(&p.1)), "{:?}", profile.points);
|
||
assert_eq!(profile.at(0.5), (1.0, 1.0));
|
||
|
||
// Each segment is sampled inside too: anchors at full width whose handles dip to nothing
|
||
// still narrow the stroke, with 256 segments.
|
||
let mut dips = vec![node(0.0, 1.0, 4, 0)];
|
||
for i in 1..=256 {
|
||
let (a, b) = (f64::from(i - 1) / 256.0, f64::from(i) / 256.0);
|
||
dips.extend([node(a + (b - a) / 3.0, 0.0, 0, 1), node(b - (b - a) / 3.0, 0.0, 0, 2), node(b, 1.0, 4, 0)]);
|
||
}
|
||
let profile = stroke_of(&load("dips.af", &pressure_document(dips)).unwrap().doc).profile.unwrap();
|
||
assert!(profile.points.iter().any(|p| p.1 < 0.5), "{:?}", profile.points);
|
||
|
||
// A curve of more than 256 segments is left out, with a warning.
|
||
let long: Vec<Vec<u8>> = (0..=300).map(|i| node(f64::from(i) / 300.0, f64::from(i % 2), 4, 0)).collect();
|
||
let r = load("long.af", &pressure_document(long)).unwrap();
|
||
assert!(stroke_of(&r.doc).profile.is_none());
|
||
assert!(r.warnings.iter().any(|w| w.contains("pressure curve can't be read")), "{:?}", r.warnings);
|
||
|
||
// A pressure curve at full width all along leaves the stroke plain.
|
||
let flat = vec![node(0.0, 1.0, 4, 0), node(1.0, 1.0, 4, 0)];
|
||
let r = load("flat.af", &pressure_document(flat)).unwrap();
|
||
assert!(stroke_of(&r.doc).profile.is_none());
|
||
assert!(r.warnings.iter().all(|w| !w.contains("pressure")), "{:?}", r.warnings);
|
||
}
|
||
|
||
#[test]
|
||
fn a_dip_between_the_samples_of_a_long_pressure_curve_is_kept() {
|
||
// 256 segments at full width, except one whose handles sit at widths 0 and 2: its width is
|
||
// 1 at its middle and end but 0.71875 a quarter of the way along.
|
||
let mut curve = vec![node(0.0, 1.0, 4, 0)];
|
||
for i in 1..=256 {
|
||
let (a, b) = (f64::from(i - 1) / 256.0, f64::from(i) / 256.0);
|
||
let (h1, h2) = if i == 100 { (0.0, 2.0) } else { (1.0, 1.0) };
|
||
curve.extend([node(a + (b - a) / 3.0, h1, 0, 1), node(b - (b - a) / 3.0, h2, 0, 2), node(b, 1.0, 4, 0)]);
|
||
}
|
||
let profile = stroke_of(&load("dip.af", &pressure_document(curve)).unwrap().doc).profile.unwrap_or_else(|| panic!("the dip is kept"));
|
||
let narrowest = profile.points.iter().map(|p| p.1).fold(1.0, f64::min);
|
||
assert!((narrowest - 0.71).abs() < 0.02, "{narrowest}");
|
||
}
|
||
|
||
#[test]
|
||
fn a_pressure_curve_just_under_full_width_is_kept() {
|
||
let curve = vec![node(0.0, 0.9995, 4, 0), node(1.0, 0.9995, 4, 0)];
|
||
let profile = stroke_of(&load("near.af", &pressure_document(curve)).unwrap().doc).profile.unwrap_or_else(|| panic!("the curve is kept"));
|
||
assert_eq!(profile.at(0.5), (0.9995, 0.9995));
|
||
}
|
||
|
||
#[test]
|
||
fn pressure_curves_stay_within_the_points_of_one_document() {
|
||
// One 256-segment curve linked from 2100 strokes: more than a million points in all.
|
||
let mut curve = vec![node(0.0, 1.0, 4, 0)];
|
||
for i in 1..=256 {
|
||
let (a, b) = (f64::from(i - 1) / 256.0, f64::from(i) / 256.0);
|
||
curve.extend([node(a + (b - a) / 3.0, 0.0, 0, 1), node(b - (b - a) / 3.0, 0.0, 0, 2), node(b, 1.0, 4, 0)]);
|
||
}
|
||
let r = load("many.af", &pressure_documents(curve, 2100)).unwrap();
|
||
let mut profiles = Vec::new();
|
||
r.doc.walk(|n| {
|
||
if let Some(AppearanceItem::Stroke(k)) = n.appearance.items.iter().find(|i| matches!(i, AppearanceItem::Stroke(_))) {
|
||
profiles.push(k.profile.as_ref().map_or(0, |p| p.points.len()));
|
||
}
|
||
});
|
||
assert_eq!(profiles.len(), 2100);
|
||
assert!(profiles.iter().sum::<usize>() <= 1 << 20, "{}", profiles.iter().sum::<usize>());
|
||
assert!(profiles.iter().filter(|n| **n > 0).count() > 1000);
|
||
assert!(profiles.contains(&0));
|
||
assert!(r.warnings.iter().any(|w| w.contains("pressure points one document may hold")), "{:?}", r.warnings);
|
||
|
||
// Curves at full width count too, so linking one from many strokes can't repeat its work
|
||
// without bound.
|
||
let flat: Vec<Vec<u8>> = (0..=768).map(|i| node(f64::from(i) / 768.0, 1.0, if i % 3 == 0 { 4 } else { 0 }, (i % 3) as u8)).collect();
|
||
let r = load("flat-many.af", &pressure_documents(flat, 2100)).unwrap();
|
||
assert!(r.warnings.iter().any(|w| w.contains("pressure points one document may hold")), "{:?}", r.warnings);
|
||
|
||
// So do curves that can't be read: 768 segments, more than a curve may have.
|
||
let long: Vec<Vec<u8>> = (0..=768).map(|i| node(f64::from(i) / 768.0, f64::from(i % 2), 4, 0)).collect();
|
||
let r = load("long-many.af", &pressure_documents(long, 2100)).unwrap();
|
||
assert!(r.warnings.iter().any(|w| w.contains("pressure curve can't be read")), "{:?}", r.warnings);
|
||
assert!(r.warnings.iter().any(|w| w.contains("pressure points one document may hold")), "{:?}", r.warnings);
|
||
}
|
||
|
||
#[test]
|
||
fn native_documents_save_reopen_export_place_and_template() {
|
||
let bytes = document(Method::Zstd);
|
||
let mut s = Session::new();
|
||
open_bytes(&mut s, "native.af", &bytes, None).unwrap();
|
||
let doc = s.doc().unwrap().doc.clone();
|
||
let reopened = vectorcraft_format::load_file(&vectorcraft_format::save_file(&doc)).unwrap();
|
||
assert_eq!(reopened.doc.layers, doc.layers);
|
||
for format in ["svg", "pdf", "png"] {
|
||
assert!(s.execute("document.export", &json!({"format": format})).is_ok(), "{format}");
|
||
}
|
||
let p = json!({"name":"native.afdesign", "dataBase64":vectorcraft_format::base64_encode(&bytes)});
|
||
s.execute("file.new", &json!({"width":100,"height":100})).unwrap();
|
||
s.execute("file.place", &p).unwrap();
|
||
assert!(s.doc().unwrap().doc.layers.iter().any(|l| !l.children().unwrap().is_empty()));
|
||
s.execute("file.newFromTemplate", &p).unwrap();
|
||
assert!(s.doc().unwrap().path.is_none());
|
||
}
|
||
|
||
#[test]
|
||
fn a_damaged_native_document_falls_back_to_its_preview_with_the_reason() {
|
||
let mut bytes = document(Method::Zlib);
|
||
// Break the doc.dat CRC: the preview still opens, saying why.
|
||
bytes[80] ^= 0xFF;
|
||
let r = load("broken.af", &bytes).unwrap();
|
||
assert!(r.preview_only);
|
||
assert!(r.warnings[0].contains("could not be read (damaged Affinity file"), "{}", r.warnings[0]);
|
||
}
|
||
}
|