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aiongg
f001f37906
* Build: line tables only for workspace crates, no debug info for dependencies * Tests: one integration-test binary per crate * xtask ci: nextest, doctests, test build without examples, one wasm check
75 lines
3.2 KiB
Rust
75 lines
3.2 KiB
Rust
//! Text anchoring of shapes without an `anchor` of their own: the model centres a shape's text,
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//! a file without one puts it at the top (or where the theme's shape defaults say).
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use std::io::{Cursor, Read, Write};
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use deckcraft_model::text::Anchor;
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use deckcraft_model::{Presentation, ShapeKind};
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use zip::write::SimpleFileOptions;
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fn sample() -> Presentation {
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let mut s = deckcraft_engine::Session::new();
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deckcraft_engine::sample::open_sample(&mut s).expect("sample");
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s.doc().expect("doc").doc.as_ref().clone()
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}
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/// Every part of `bytes` with `edit` applied to the XML ones.
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fn rewrite(bytes: &[u8], edit: impl Fn(&str, String) -> String) -> Vec<u8> {
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let mut src = zip::ZipArchive::new(Cursor::new(bytes)).expect("zip");
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let mut out = zip::ZipWriter::new(Cursor::new(Vec::new()));
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for i in 0..src.len() {
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let mut f = src.by_index(i).expect("entry");
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let name = f.name().to_string();
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let mut data = Vec::new();
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f.read_to_end(&mut data).expect("read");
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if name.ends_with(".xml") {
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data = edit(&name, String::from_utf8(data).expect("utf8")).into_bytes();
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}
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out.start_file(name, SimpleFileOptions::default()).expect("start");
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out.write_all(&data).expect("write");
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}
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out.finish().expect("finish").into_inner()
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}
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/// Anchors of the shapes with text that aren't placeholders, text boxes or tables.
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fn anchors(p: &Presentation) -> Vec<Option<Anchor>> {
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p.slides
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.iter()
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.flat_map(|s| s.shapes.iter())
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.filter(|s| s.ph.is_none() && !s.text_box && !matches!(s.kind, ShapeKind::Table(_)))
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.filter_map(|s| s.text.as_ref().map(|t| t.body.anchor))
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.collect()
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}
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#[test]
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fn shapes_keep_their_middle_anchor_and_files_without_one_anchor_at_the_top() {
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let p = sample();
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assert!(anchors(&p).contains(&None), "the sample has shapes with the model's default anchor");
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let bytes = deckcraft_pptx::export(&p).expect("export");
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// Written explicitly, so PowerPoint (which reads a missing anchor as top) centres them too.
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let back = deckcraft_pptx::import(&bytes).expect("import");
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let a = anchors(&back);
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assert_eq!(a, anchors(&p), "the middle anchor survives (as the model's default)");
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// The same file without the anchors: their text sits at the top.
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let bare = rewrite(&bytes, |n, x| if n.starts_with("ppt/slides/slide") { x.replace(r#" anchor="ctr""#, "") } else { x });
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let a = anchors(&deckcraft_pptx::import(&bare).expect("import"));
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assert!(a.iter().all(|x| *x == Some(Anchor::Top)), "{a:?}");
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// ...unless the theme's shape defaults centre them, as Office's themes do.
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let themed = rewrite(&bare, |n, x| {
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if n.starts_with("ppt/theme/") {
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x.replace(
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"<a:objectDefaults/>",
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r#"<a:objectDefaults><a:spDef><a:spPr/><a:bodyPr rtlCol="0" anchor="ctr"/><a:lstStyle/></a:spDef></a:objectDefaults>"#,
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)
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} else {
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x
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}
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});
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let a = anchors(&deckcraft_pptx::import(&themed).expect("import"));
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assert!(a.iter().all(|x| x.is_none() || *x == Some(Anchor::Middle)), "{a:?}");
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assert!(a.iter().filter(|x| x.is_none()).count() >= 3, "{a:?}");
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}
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