mirror of
https://github.com/storytold/vectorcraft.git
synced 2026-10-24 17:56:50 -06:00
399 lines
18 KiB
Rust
399 lines
18 KiB
Rust
//! Brushes and symbols: commands, tools, rendering and persistence.
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use serde_json::{Value, json};
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use vectorcraft_doc::{Node, NodeKind};
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use vectorcraft_geom::Rect;
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use vectorcraft_tools::{Mods, PointerEvent, PointerKind};
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use super::*;
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fn session() -> Session {
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let mut s = Session::new();
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s.execute("file.new", &json!({"width": 400, "height": 300})).unwrap();
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s
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}
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fn rect(s: &mut Session, x: f64, y: f64, w: f64, h: f64) -> NodeId {
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let r = s.execute("shape.rectangle", &json!({"x": x, "y": y, "width": w, "height": h})).unwrap();
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NodeId(r["id"].as_u64().unwrap())
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}
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fn line(s: &mut Session) -> NodeId {
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let r = s.execute("shape.line", &json!({"x1": 50, "y1": 100, "x2": 250, "y2": 100}));
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match r {
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Ok(v) if v["id"].is_u64() => NodeId(v["id"].as_u64().unwrap()),
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_ => {
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let r = s.execute("path.freehand", &json!({"points": [[50, 100], [150, 100], [250, 100]]})).unwrap();
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NodeId(r["id"].as_u64().unwrap())
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}
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}
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}
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fn node(s: &Session, id: NodeId) -> Node {
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s.doc().unwrap().doc.node(id).cloned().unwrap()
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}
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fn brush_of(s: &Session, id: NodeId) -> Option<String> {
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node(s, id).appearance.stroke().and_then(|st| st.brush.clone())
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}
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fn select(s: &mut Session, ids: &[NodeId]) {
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let ids = ids.to_vec();
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s.select(|_, sel| sel.set(ids)).unwrap();
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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 bounds(s: &Session, id: NodeId) -> Rect {
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node(s, id).geometric_bounds().unwrap()
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}
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// ---------- brushes ----------
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#[test]
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fn brush_list_has_the_default_library() {
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let mut s = session();
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let l = s.execute("brush.list", &json!({})).unwrap();
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let names: Vec<&str> = l["brushes"].as_array().unwrap().iter().map(|b| b["name"].as_str().unwrap()).collect();
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for n in ["3 pt. Round", "6 pt. Flat", "Charcoal", "Arrow", "Dots", "Chain", "Bristle Round"] {
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assert!(names.contains(&n), "{n} in {names:?}");
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}
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let def = s.execute("brush.get", &json!({"name": "6 pt. Flat"})).unwrap();
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assert_eq!(def["type"], "calligraphic");
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assert_eq!(def["angle"], json!(45.0));
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}
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#[test]
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fn apply_and_remove_brush_with_undo() {
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let mut s = session();
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let a = rect(&mut s, 10.0, 10.0, 50.0, 50.0);
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s.execute("brush.apply", &json!({"name": "Charcoal"})).unwrap();
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assert_eq!(brush_of(&s, a).as_deref(), Some("Charcoal"));
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assert_eq!(s.execute("brush.list", &json!({})).unwrap()["current"], "Charcoal");
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s.execute("brush.remove", &json!({})).unwrap();
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assert_eq!(brush_of(&s, a), None);
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s.execute("edit.undo", &json!({})).unwrap();
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assert_eq!(brush_of(&s, a).as_deref(), Some("Charcoal"));
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s.execute("edit.undo", &json!({})).unwrap();
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assert_eq!(brush_of(&s, a), None);
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assert!(s.execute("brush.apply", &json!({"name": "Nope"})).is_err());
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}
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#[test]
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fn apply_adds_a_stroke_when_missing_and_reaches_into_groups() {
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let mut s = session();
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let a = rect(&mut s, 10.0, 10.0, 50.0, 50.0);
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let b = rect(&mut s, 80.0, 10.0, 50.0, 50.0);
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s.execute("paint.setStroke", &json!({"color": null, "ids": [a.0]})).ok();
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select(&mut s, &[a, b]);
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s.execute("object.group", &json!({})).unwrap();
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s.execute("brush.apply", &json!({"name": "Dots"})).unwrap();
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assert_eq!(brush_of(&s, a).as_deref(), Some("Dots"));
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assert_eq!(brush_of(&s, b).as_deref(), Some("Dots"));
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assert!(!node(&s, a).appearance.stroke_paint().is_none());
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}
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#[test]
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fn new_brushes_from_params_and_selection() {
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let mut s = session();
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let r = s.execute("brush.new", &json!({"type": "calligraphic", "name": "Nib", "params": {"angle": 20, "roundness": 30, "size": 8}})).unwrap();
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assert_eq!(r["name"], "Nib");
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assert_eq!(s.execute("brush.get", &json!({"name": "Nib"})).unwrap()["size"], json!(8.0));
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// Art brushes need art.
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s.select(|_, sel| sel.clear()).unwrap();
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assert!(s.execute("brush.new", &json!({"type": "art"})).is_err());
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let a = rect(&mut s, 0.0, 0.0, 40.0, 8.0);
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let r = s.execute("brush.new", &json!({"type": "art", "name": "Bar"})).unwrap();
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assert_eq!(r["name"], "Bar");
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let r = s.execute("brush.new", &json!({"type": "pattern"})).unwrap();
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assert_eq!(r["name"], "New Pattern Brush");
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let def = s.execute("brush.get", &json!({"name": "New Pattern Brush"})).unwrap();
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assert!(def["side"].is_object());
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// The new art brush draws the rectangle along another path.
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let l = line(&mut s);
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s.execute("brush.apply", &json!({"name": "Bar", "ids": [l.0]})).unwrap();
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let g = s.execute("object.expandBrush", &json!({"ids": [l.0]})).unwrap();
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let gid = NodeId(g["ids"][0].as_u64().unwrap());
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let b = bounds(&s, gid);
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assert!((b.width() - 200.0).abs() < 0.5 && (b.height() - 8.0).abs() < 0.5, "{b:?}");
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let _ = a;
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// Undo removes the brush again; the library was not there before.
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assert!(s.execute("brush.new", &json!({"type": "nope"})).is_err());
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}
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#[test]
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fn brush_options_rename_duplicate_and_delete_update_strokes() {
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let mut s = session();
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let a = rect(&mut s, 10.0, 10.0, 50.0, 50.0);
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s.execute("brush.apply", &json!({"name": "3 pt. Round"})).unwrap();
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s.execute("brush.options", &json!({"name": "3 pt. Round", "params": {"size": 5}, "newName": "5 pt. Round"})).unwrap();
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assert_eq!(brush_of(&s, a).as_deref(), Some("5 pt. Round"));
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assert_eq!(s.execute("brush.get", &json!({"name": "5 pt. Round"})).unwrap()["size"], json!(5.0));
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assert_eq!(s.execute("brush.list", &json!({})).unwrap()["current"], "5 pt. Round");
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let d = s.execute("brush.duplicate", &json!({"name": "5 pt. Round"})).unwrap();
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assert_eq!(d["name"], "5 pt. Round copy");
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s.execute("brush.delete", &json!({"name": "5 pt. Round"})).unwrap();
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assert_eq!(brush_of(&s, a), None);
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assert!(s.execute("brush.get", &json!({"name": "5 pt. Round"})).is_err());
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assert!(s.execute("brush.delete", &json!({"name": "5 pt. Round"})).is_err());
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}
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#[test]
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fn expand_brush_replaces_path_with_art_group() {
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let mut s = session();
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let a = rect(&mut s, 100.0, 100.0, 100.0, 100.0);
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s.execute("brush.apply", &json!({"name": "10 pt. Oval"})).unwrap();
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let r = s.execute("object.expandBrush", &json!({})).unwrap();
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let g = NodeId(r["ids"][0].as_u64().unwrap());
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assert!(s.doc().unwrap().doc.node(a).is_none());
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let gn = node(&s, g);
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assert!(matches!(gn.kind, NodeKind::Group { .. }));
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// White fill kept + the black nib outline.
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assert_eq!(gn.children().unwrap().len(), 2);
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let b = bounds(&s, g);
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assert!(b.width() > 104.0 && b.width() < 112.0, "{b:?}");
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assert_eq!(s.doc().unwrap().selection.objects, vec![g]);
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assert!(s.execute("object.expandBrush", &json!({})).is_err(), "nothing brushed left");
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}
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#[test]
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fn brush_freehand_paints_with_a_brush_in_one_step() {
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let mut s = session();
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let n = s.doc().unwrap().history.undo.len();
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s.begin_interaction("Paintbrush").unwrap();
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s.preview("brush.freehand", &json!({"points": [[10, 10], [60, 40], [120, 10]], "style": "brush", "brush": "Charcoal"})).unwrap();
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s.commit_interaction().unwrap();
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assert_eq!(s.doc().unwrap().history.undo.len(), n + 1);
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let id = s.doc().unwrap().selection.objects[0];
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assert_eq!(brush_of(&s, id).as_deref(), Some("Charcoal"));
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}
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#[test]
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fn paintbrush_tool_uses_the_current_brush() {
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let mut s = session();
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s.execute("brush.setCurrent", &json!({"name": "Arrow"})).unwrap();
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let v = ViewInfo::default();
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s.select_tool("paintbrush", v).unwrap();
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for (k, x, y) in
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[(PointerKind::Down, 10.0, 10.0), (PointerKind::Drag, 50.0, 30.0), (PointerKind::Drag, 90.0, 20.0), (PointerKind::Up, 130.0, 10.0)]
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{
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s.pointer(&PointerEvent::new(k, x, y), v).unwrap();
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}
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let id = s.doc().unwrap().selection.objects[0];
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assert_eq!(brush_of(&s, id).as_deref(), Some("Arrow"));
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// A tool option overrides the document's current brush.
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s.set_tool_option("brush", &json!("Dots"));
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for (k, x, y) in [(PointerKind::Down, 10.0, 110.0), (PointerKind::Drag, 50.0, 130.0), (PointerKind::Up, 130.0, 110.0)] {
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s.pointer(&PointerEvent::new(k, x, y), v).unwrap();
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}
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let id = s.doc().unwrap().selection.objects[0];
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assert_eq!(brush_of(&s, id).as_deref(), Some("Dots"));
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assert!(s.execute("brush.setCurrent", &json!({"name": "Nope"})).is_err());
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}
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// ---------- symbols ----------
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fn make_symbol(s: &mut Session) -> (NodeId, String, Rect) {
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let a = rect(s, 100.0, 50.0, 80.0, 40.0);
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let b = bounds(s, a);
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let r = s.execute("symbol.new", &json!({"name": "Box"})).unwrap();
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(NodeId(r["id"].as_u64().unwrap()), r["name"].as_str().unwrap().to_string(), b)
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}
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#[test]
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fn new_symbol_replaces_selection_with_instance_of_same_bounds() {
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let mut s = session();
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let (inst, name, b) = make_symbol(&mut s);
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assert_eq!(name, "Box");
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let n = node(&s, inst);
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assert!(matches!(&n.kind, NodeKind::SymbolInstance { symbol, .. } if symbol == "Box"));
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assert!(close(n.geometric_bounds().unwrap(), b, 1e-9), "{:?} vs {b:?}", n.geometric_bounds());
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let d = &s.doc().unwrap().doc;
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assert_eq!(d.symbols.len(), 1);
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assert_eq!(d.layers[0].children().unwrap().len(), 1);
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let l = s.execute("symbol.list", &json!({})).unwrap();
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assert_eq!(l["symbols"][0]["instances"], 1);
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assert_eq!(l["symbols"][0]["size"], json!([80.0, 40.0]));
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// A second symbol gets a unique name.
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rect(&mut s, 0.0, 0.0, 10.0, 10.0);
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assert_eq!(s.execute("symbol.new", &json!({"name": "Box"})).unwrap()["name"], "Box 2");
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s.execute("edit.undo", &json!({})).unwrap();
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assert_eq!(s.doc().unwrap().doc.symbols.len(), 1);
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}
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#[test]
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fn place_and_break_link_round_trip_geometry() {
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let mut s = session();
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let (_, name, _) = make_symbol(&mut s);
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let r = s.execute("symbol.place", &json!({"name": name, "x": 300, "y": 200})).unwrap();
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let p = NodeId(r["id"].as_u64().unwrap());
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assert!(close(bounds(&s, p), Rect::new(260.0, 180.0, 340.0, 220.0), 1e-9), "{:?}", bounds(&s, p));
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let r = s.execute("symbol.breakLink", &json!({"ids": [p.0]})).unwrap();
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let art = NodeId(r["ids"][0].as_u64().unwrap());
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let n = node(&s, art);
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assert!(matches!(n.kind, NodeKind::Path { .. }));
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assert!(close(n.geometric_bounds().unwrap(), Rect::new(260.0, 180.0, 340.0, 220.0), 1e-6));
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assert_eq!(n.appearance.stroke_width(), 1.0, "strokes are not scaled by normalisation");
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}
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#[test]
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fn edit_then_update_redefines_all_instances() {
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let mut s = session();
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let (inst, name, _) = make_symbol(&mut s);
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let other = NodeId(s.execute("symbol.place", &json!({"x": 300, "y": 200})).unwrap()["id"].as_u64().unwrap());
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select(&mut s, &[inst]);
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let r = s.execute("symbol.edit", &json!({})).unwrap();
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assert_eq!(r["name"], name);
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let art = NodeId(r["ids"][0].as_u64().unwrap());
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// Make the art twice as wide, then redefine.
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s.execute("object.transform", &json!({"ids": [art.0], "matrix": [2, 0, 0, 1, -140, 0]})).ok();
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let w = bounds(&s, art).width();
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let r = s.execute("symbol.update", &json!({"name": name})).unwrap();
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let new_inst = NodeId(r["id"].as_u64().unwrap());
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assert!((bounds(&s, new_inst).width() - w).abs() < 1e-6);
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assert!((bounds(&s, other).width() - w).abs() < 1e-6, "other instances pick up the new size");
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assert!((bounds(&s, other).center().x - 300.0).abs() < 1e-6);
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}
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#[test]
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fn delete_duplicate_and_replace_symbols() {
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let mut s = session();
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let (inst, name, _) = make_symbol(&mut s);
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let d = s.execute("symbol.duplicate", &json!({"name": name})).unwrap();
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assert_eq!(d["name"], "Box copy");
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rect(&mut s, 0.0, 0.0, 20.0, 20.0);
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s.execute("symbol.new", &json!({"name": "Small"})).unwrap();
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select(&mut s, &[inst]);
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s.execute("symbol.replace", &json!({"name": "Small"})).unwrap();
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assert!(matches!(&node(&s, inst).kind, NodeKind::SymbolInstance { symbol, .. } if symbol == "Small"));
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assert!(close(bounds(&s, inst), Rect::new(130.0, 60.0, 150.0, 80.0), 1e-6), "{:?}", bounds(&s, inst));
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s.execute("symbol.delete", &json!({"name": "Small"})).unwrap();
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let doc = &s.doc().unwrap().doc;
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assert!(doc.symbols.iter().all(|x| x.name != "Small"));
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assert!(doc.node(inst).is_none());
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let mut plain = 0;
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doc.walk(|n| plain += matches!(n.kind, NodeKind::Path { .. }) as i32);
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assert_eq!(plain, 2, "both instances of Small were expanded");
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assert!(s.execute("symbol.delete", &json!({"name": "Small"})).is_err());
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}
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#[test]
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fn sprayer_command_creates_a_symbol_set_and_alt_removes() {
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let mut s = session();
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make_symbol(&mut s);
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s.select(|_, sel| sel.clear()).unwrap();
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let pts: Vec<Value> = (0..20).map(|i| json!([20.0 + i as f64 * 15.0, 150.0])).collect();
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let r = s.execute("symbol.spray", &json!({"points": pts, "radius": 10, "density": 8})).unwrap();
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let set = NodeId(r["id"].as_u64().unwrap());
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let n = r["count"].as_u64().unwrap() as usize;
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assert!(n >= 3, "{n}");
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let g = node(&s, set);
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assert_eq!(g.name.as_deref(), Some("Symbol Set"));
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assert_eq!(g.children().unwrap().len(), n);
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// Spraying again with the set selected adds to it.
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s.execute("symbol.spray", &json!({"points": [[200, 250]]})).unwrap();
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assert_eq!(node(&s, set).children().unwrap().len(), n + 1);
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let r = s.execute("symbol.spray", &json!({"points": [[200, 250]], "radius": 60, "alt": true})).unwrap();
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assert!(r["count"].as_u64().unwrap() >= 1);
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assert_eq!(node(&s, set).children().unwrap().len(), n + 1 - r["count"].as_u64().unwrap() as usize);
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}
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#[test]
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fn symbolism_adjustments() {
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let mut s = session();
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let (inst, _, b) = make_symbol(&mut s);
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let c = b.center();
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let at = json!([[c.x, c.y]]);
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s.execute("symbol.adjust", &json!({"tool": "size", "points": at, "radius": 50, "intensity": 10})).unwrap();
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assert!(bounds(&s, inst).width() > b.width() + 1.0);
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s.execute("symbol.adjust", &json!({"tool": "screen", "points": at, "intensity": 10})).unwrap();
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assert!(node(&s, inst).opacity < 1.0);
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s.execute("symbol.adjust", &json!({"tool": "stain", "points": at, "color": "#ff0000", "intensity": 10})).unwrap();
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let f = node(&s, inst).appearance.fill().cloned().unwrap();
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assert!(f.opacity > 0.0 && f.paint.color().unwrap().to_hex() == "#ff0000");
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s.execute("symbol.adjust", &json!({"tool": "shift", "points": [[c.x, c.y], [c.x + 20.0, c.y]], "intensity": 10})).unwrap();
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assert!(bounds(&s, inst).center().x > c.x + 5.0);
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let before = bounds(&s, inst);
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s.execute("symbol.adjust", &json!({"tool": "spin", "points": at, "intensity": 10})).unwrap();
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assert!(!close(bounds(&s, inst), before, 1e-6), "spin rotates");
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let far = s.execute("symbol.adjust", &json!({"tool": "size", "points": [[0, 290]], "radius": 5})).unwrap();
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assert_eq!(far["count"], 0);
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assert!(s.execute("symbol.adjust", &json!({"tool": "nope", "points": at})).is_err());
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}
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#[test]
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fn symbol_sprayer_tool_gesture_is_one_undo_step() {
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let mut s = session();
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make_symbol(&mut s);
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s.select(|_, sel| sel.clear()).unwrap();
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let n = s.doc().unwrap().history.undo.len();
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let v = ViewInfo::default();
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s.select_tool("symbolSprayer", v).unwrap();
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let mut evs = vec![PointerEvent::new(PointerKind::Down, 50.0, 200.0)];
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for i in 1..15 {
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evs.push(PointerEvent::new(PointerKind::Drag, 50.0 + i as f64 * 20.0, 200.0));
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}
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evs.push(PointerEvent::new(PointerKind::Up, 350.0, 200.0).with_mods(Mods::default()));
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for e in evs {
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s.pointer(&e, v).unwrap();
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}
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assert_eq!(s.doc().unwrap().history.undo.len(), n + 1);
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let set = s.doc().unwrap().selection.objects[0];
|
|
assert!(node(&s, set).children().unwrap().len() >= 3);
|
|
// The sizer tool grows the sprayed instances.
|
|
let first = node(&s, set).children().unwrap()[0].clone();
|
|
let c = first.geometric_bounds().unwrap().center();
|
|
s.select_tool("symbolSizer", v).unwrap();
|
|
s.pointer(&PointerEvent::new(PointerKind::Down, c.x, c.y), v).unwrap();
|
|
s.pointer(&PointerEvent::new(PointerKind::Up, c.x, c.y), v).unwrap();
|
|
let after = s.doc().unwrap().doc.node(first.id).unwrap().geometric_bounds().unwrap();
|
|
assert!(after.width() > first.geometric_bounds().unwrap().width());
|
|
}
|
|
|
|
// ---------- rendering & persistence ----------
|
|
|
|
#[test]
|
|
fn brushed_strokes_and_instances_render() {
|
|
let mut s = session();
|
|
make_symbol(&mut s);
|
|
let l = line(&mut s);
|
|
s.execute("brush.apply", &json!({"name": "Chain", "ids": [l.0]})).unwrap();
|
|
let doc = s.doc().unwrap().doc.clone();
|
|
let img = vectorcraft_render::Renderer::new().render_region(&doc, Rect::new(0.0, 0.0, 400.0, 300.0), 1.0, true);
|
|
let dark = |x: u32, y: u32| {
|
|
let p = img.pixel(x, y);
|
|
(p[0] as u32 + p[1] as u32 + p[2] as u32) < 300
|
|
};
|
|
// The instance's outline (the rectangle's black stroke) is drawn.
|
|
assert!((45..=55).any(|y| dark(100, y)), "instance stroke rendered");
|
|
// Chain links are thicker than the 1 pt stroke, with gaps.
|
|
let hits = (50..250).filter(|x| (95..=105).any(|y| dark(*x, y))).count();
|
|
assert!(hits > 100, "chain covers most of the line: {hits}");
|
|
}
|
|
|
|
#[test]
|
|
fn brushes_and_symbols_survive_vectorcraft_round_trip() {
|
|
let mut s = session();
|
|
make_symbol(&mut s);
|
|
s.execute("brush.new", &json!({"type": "calligraphic", "name": "Mine", "params": {"size": 7}})).unwrap();
|
|
let l = line(&mut s);
|
|
s.execute("brush.apply", &json!({"name": "Mine", "ids": [l.0]})).unwrap();
|
|
let doc = s.doc().unwrap().doc.clone();
|
|
let bytes = vectorcraft_format::save(&doc, false);
|
|
let back = vectorcraft_format::load(&bytes).unwrap();
|
|
assert_eq!(vectorcraft_brush::library(&back), vectorcraft_brush::library(&doc));
|
|
assert_eq!(vectorcraft_brush::find(&back, "Mine").map(|b| b.kind.type_id()), Some("calligraphic"));
|
|
assert_eq!(back.symbols, doc.symbols);
|
|
assert_eq!(back.unknown.get("symbolSizes"), doc.unknown.get("symbolSizes"));
|
|
let bl = back.node(l).unwrap();
|
|
assert_eq!(bl.appearance.stroke().unwrap().brush.as_deref(), Some("Mine"));
|
|
// A reloaded document places instances at the natural size.
|
|
let mut s2 = Session::new();
|
|
s2.add_document(back, None);
|
|
let r = s2.execute("symbol.place", &json!({"name": "Box", "x": 100, "y": 100})).unwrap();
|
|
let b = s2.doc().unwrap().doc.node(NodeId(r["id"].as_u64().unwrap())).unwrap().geometric_bounds().unwrap();
|
|
assert!(close(b, Rect::new(60.0, 80.0, 140.0, 120.0), 1e-9));
|
|
}
|