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dotCooCoo
b1a35f8428
The three envelope ink tests set "Type" in the default family and unwrapped ink_bounds(). Without bundled fonts, craft-fonts or system fonts (vectorcraft-effects' tests on a bare Linux host), no face draws and the effects test panicked at the unwrap. Each test now adds the Heighttest Sans face built from the bundled Source Sans 3 (test-fonts feature, now also on vectorcraft-effects' dev-dependency), sets the text in it, and computes the expected box from the layout's glyph outlines. It checks that envelope_ink gives that box as well as the before and after registration boxes, so a change to the registered measure fails the test.
49 lines
2.7 KiB
Rust
49 lines
2.7 KiB
Rust
//! A renderer made without an engine session makes envelopes measure type by its glyph outlines.
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//! One test in its own process, so nothing else has registered the measure before the renderer is
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//! made.
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// Integration tests: unwrapping and panicking on failure is fine here, unlike in shipped code (AGENTS.md › Robustness).
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#![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
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use std::sync::Arc;
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use vectorcraft_doc::{CharStyle, Node, NodeId, NodeKind, TextObject};
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use vectorcraft_geom::{Point, Rect, Shape};
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use vectorcraft_text::test_fonts::{HEIGHT_FAMILY, height_font};
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/// The largest distance between the edges of `a` and `b`.
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fn off(a: Rect, b: Rect) -> f64 {
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[a.x0 - b.x0, a.y0 - b.y0, a.x1 - b.x1, a.y1 - b.y1].iter().fold(0.0f64, |m, v| m.max(v.abs()))
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}
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/// "Type" at 48 pt in a face the test adds, so its glyphs draw on a machine without craft-fonts or
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/// system fonts.
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fn type_in_test_face() -> TextObject {
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assert!(vectorcraft_text::FontDb::global().add_font(height_font(true).unwrap()) > 0, "the test face loads");
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TextObject::point(Point::new(10.0, 60.0), "Type", CharStyle { font_family: HEIGHT_FAMILY.into(), size: 48.0, ..Default::default() })
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}
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/// The box of the outlines `t`'s glyphs draw, in document space, measured glyph by glyph.
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fn outline_box(t: &TextObject) -> Rect {
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let laid = vectorcraft_text::layout(vectorcraft_text::FontDb::global(), t);
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let outlines: Vec<Rect> = laid.glyphs.iter().filter(|g| !g.outline.elements().is_empty()).map(|g| (t.xf * &g.outline).bounding_box()).collect();
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assert_eq!(outlines.len(), 4, "every glyph of \"Type\" draws an outline");
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outlines.into_iter().reduce(|a, b| a.union(b)).unwrap()
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}
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#[test]
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fn a_new_renderer_measures_type_in_envelopes_by_its_glyphs() {
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let t = type_in_test_face();
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let n = Arc::new(Node::new(NodeId(1), NodeKind::Text(Box::new(t.clone()))));
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let laid = n.geometric_bounds().unwrap();
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let ink = outline_box(&t);
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assert!(laid.height() - ink.height() > 1.0, "the laid-out box {laid:?} reaches past the glyphs {ink:?}");
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let measured = vectorcraft_text::envelope_ink(&t, t.xf, None).unwrap();
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assert!(off(measured, ink) < 1e-6, "the envelope measure gives the glyphs' box: {measured:?} vs {ink:?}");
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let before = vectorcraft_doc::live::envelope_content_bounds(std::slice::from_ref(&n)).unwrap();
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assert!(off(before, laid) < 1e-6, "with nothing registered, type keeps its laid-out box: {before:?} vs {laid:?}");
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let _ = vectorcraft_render::Renderer::new();
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let after = vectorcraft_doc::live::envelope_content_bounds(&[n]).unwrap();
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assert!(off(after, ink) < 1e-6, "after a renderer is made, type is measured by its glyphs: {after:?} vs {ink:?}");
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}
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