cad-editor/tests/pdf_export_text_check.rs
2026-08-15 23:11:26 +03:00

113 lines
3.7 KiB
Rust

// Regression for #385: text and dimension text must reach the PDF / print
// export. From v0.8.2 text renders on-screen only as GPU SDF glyph quads
// (`WireModel::text_verts`); the CPU PDF exporter used to draw only wire
// stroke `points`, so all text — standalone TEXT/MTEXT and dimension text —
// vanished from exported PDFs (present in v0.7.6).
//
// The op-level placement checks live in `pdf_export`'s own unit tests, which can
// see `emit_text`'s ops. What only an integration test can cover is that the
// real entity -> scene.entity_wires() -> export_pdf path carries text at all,
// per entity kind — so that is what this asserts.
use acadrust::entities::{Dimension, DimensionLinear, Text};
use acadrust::types::Vector3;
use acadrust::EntityType;
use OpenCADStudio::io::pdf_export::{export_pdf, PdfPlotOptions};
use OpenCADStudio::scene::Scene;
#[test]
fn text_and_dim_reach_pdf_export() {
let mut scene = Scene::new();
let t = Text::with_value("HELLO", Vector3::new(10.0, 10.0, 0.0)).with_height(5.0);
let text_h = scene.add_entity(EntityType::Text(t));
// A linear dimension — its measurement value is synthesized as SDF text too,
// and dimension text is what #385 was actually filed about.
let dim = DimensionLinear::new(Vector3::new(0.0, 0.0, 0.0), Vector3::new(40.0, 0.0, 0.0));
let dim_h = scene.add_entity(EntityType::Dimension(Dimension::Linear(dim)));
let wires = scene.entity_wires();
// Assert per entity, not "some wire somewhere has text": both asserts below
// would otherwise be satisfied by the TEXT alone, leaving a dimension-text
// regression — the actual reported bug — green.
// Tessellation names each wire after its entity handle (see the
// `w.name.parse::<u64>()` lookup in the render pipeline).
let has_text = |h: acadrust::types::Handle| {
let want = h.value().to_string();
wires
.iter()
.any(|w| w.name == want && !w.text_verts.is_empty())
};
assert!(
has_text(text_h),
"TEXT carries no glyph quads to the exporter"
);
assert!(
has_text(dim_h),
"DIMENSION carries no glyph quads to the exporter — dim text would be \
missing from the PDF (#385)"
);
// End-to-end: the same wire set with and without text. A private temp dir
// keeps concurrent runs (and other users on a shared build host) from
// colliding on a fixed name in the shared temp root.
let dir = std::env::temp_dir().join(format!("ocs385-{}", std::process::id()));
std::fs::create_dir_all(&dir).expect("temp dir");
let p_text = dir.join("with_text.pdf");
export_pdf(
&wires,
&[],
&[],
210.0,
297.0,
0.0,
0.0,
0,
1.0,
None,
&p_text,
None,
PdfPlotOptions::default(),
)
.expect("export with text");
let with_text = std::fs::read(&p_text).expect("read pdf");
assert!(with_text.starts_with(b"%PDF"), "not a PDF");
let stripped: Vec<_> = wires
.iter()
.cloned()
.map(|mut w| {
w.text_verts.clear();
w
})
.collect();
let p_bare = dir.join("no_text.pdf");
export_pdf(
&stripped,
&[],
&[],
210.0,
297.0,
0.0,
0.0,
0,
1.0,
None,
&p_bare,
None,
PdfPlotOptions::default(),
)
.expect("export without text");
let no_text = std::fs::read(&p_bare).expect("read pdf");
assert!(
with_text.len() > no_text.len(),
"text added no content to the PDF: {} !> {}",
with_text.len(),
no_text.len()
);
let _ = std::fs::remove_dir_all(&dir);
}