79 lines
3.4 KiB
Rust
79 lines
3.4 KiB
Rust
//! Strokes on type in SVG: character stroke options on live text (and back), runs that differ
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//! from the first, and the object's own strokes drawn over the glyph outlines.
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use vectorcraft_color::{Color, Paint};
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use vectorcraft_doc::{AppearanceItem, CharStyle, Dash, Document, LineCap, LineJoin, Node, NodeKind, StrokeLayer, TextObject, TextRun};
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use vectorcraft_geom::Point;
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use vectorcraft_svg::{ExportOptions, export, import};
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fn text_doc(t: TextObject, items: Vec<AppearanceItem>) -> Document {
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let mut d = Document::new(300.0, 200.0);
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let mut n = Node::new(d.alloc_id(), NodeKind::Text(Box::new(t)));
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n.appearance.items = items;
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let l = d.layers[0].id;
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d.insert(Some(l), 0, n).unwrap();
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d
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}
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fn stroked() -> CharStyle {
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CharStyle {
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size: 40.0,
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stroke: Paint::solid(Color::BLACK),
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stroke_width: 2.0,
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stroke_cap: LineCap::Round,
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stroke_join: LineJoin::Round,
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stroke_dash: Some(Dash { pattern: vec![3.0, 1.0], ..Default::default() }),
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..Default::default()
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}
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}
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#[test]
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fn an_object_stroke_on_type_is_written_with_its_dashes() {
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let mut st = StrokeLayer::new(Paint::solid(Color::rgb8(255, 0, 0)), 3.0);
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st.dash = Some(Dash { pattern: vec![4.0, 2.0], ..Default::default() });
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st.opacity = 0.5;
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let t = TextObject::point(Point::new(20.0, 100.0), "Dashed", CharStyle { size: 40.0, ..Default::default() });
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for outline_text in [false, true] {
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let svg = export(&text_doc(t.clone(), vec![AppearanceItem::Stroke(st.clone())]), &ExportOptions { outline_text, ..Default::default() });
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assert!(svg.contains("stroke-dasharray=\"4 2\""), "{svg}");
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assert!(svg.contains("stroke-opacity=\"0.5\""), "{svg}");
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assert_eq!(svg.contains("<text"), !outline_text, "{svg}");
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}
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}
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#[test]
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fn character_stroke_options_round_trip_through_live_text() {
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let svg = export(&text_doc(TextObject::point(Point::new(20.0, 100.0), "Round", stroked()), vec![]), &ExportOptions::default());
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for attr in ["stroke-linecap=\"round\"", "stroke-linejoin=\"round\"", "stroke-dasharray=\"3 1\""] {
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assert!(svg.contains(attr), "{attr}: {svg}");
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}
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let back = import(&svg).unwrap();
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let mut found = None;
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back.walk(|n| {
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if let NodeKind::Text(t) = &n.kind {
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found = Some(t.runs[0].style.clone());
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}
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});
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let st = found.expect("live text comes back");
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assert_eq!((st.stroke_cap, st.stroke_join), (LineCap::Round, LineJoin::Round));
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assert_eq!(st.stroke_dash.map(|d| d.pattern), Some(vec![3.0, 1.0]));
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}
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#[test]
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fn a_run_without_the_first_runs_stroke_resets_it() {
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let mut t = TextObject::point(Point::new(20.0, 100.0), "Ab", stroked());
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t.runs.push(TextRun { text: "cd".into(), style: CharStyle { size: 40.0, ..Default::default() } });
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let svg = export(&text_doc(t, vec![]), &ExportOptions::default());
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let second = svg.split("<tspan").nth(2).expect("a tspan per run");
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assert!(
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second.contains("stroke=\"none\"") && second.contains("stroke-linejoin=\"miter\"") && second.contains("stroke-dasharray=\"none\""),
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"{svg}"
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);
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// Outlined, each run's glyphs carry their own stroke options.
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let svg = export(
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&text_doc(TextObject::point(Point::new(20.0, 100.0), "Ab", stroked()), vec![]),
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&ExportOptions { outline_text: true, ..Default::default() },
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);
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assert!(svg.contains("stroke-linejoin=\"round\"") && svg.contains("stroke-dasharray=\"3 1\""), "{svg}");
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}
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