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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
119 lines
7.0 KiB
Rust
119 lines
7.0 KiB
Rust
//! Legacy OLE objects whose preview picture lives in the slide's VML drawing, and ActiveX controls
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//! shown by their pictures.
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use std::io::{Cursor, Read, Write};
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use deckcraft_model::ShapeKind;
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use deckcraft_model::defaults;
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const FRAME: &str = r#"<p:graphicFrame><p:nvGraphicFramePr><p:cNvPr id="90" name="Object 3"/><p:cNvGraphicFramePr/><p:nvPr/></p:nvGraphicFramePr><p:xfrm><a:off x="0" y="0"/><a:ext cx="914400" cy="914400"/></p:xfrm><a:graphic><a:graphicData uri="http://schemas.openxmlformats.org/presentationml/2006/ole"><p:oleObj spid="_x0000_s2050" name="Slide" r:id="rIdOle" progId="Thing.1"><p:embed/></p:oleObj></a:graphicData></a:graphic></p:graphicFrame>"#;
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const VML: &str = r#"<xml xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><v:shape id="_x0000_s2049"><v:imagedata o:relid="rIdA"/></v:shape><v:shape id="_x0000_s2050" style='position:absolute;left:0;top:0;width:1in;height:1in'><v:imagedata o:relid="rIdB" o:title=""/></v:shape></xml>"#;
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const VML_RELS: &str = r#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rIdA" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/other.png"/><Relationship Id="rIdB" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/preview.png"/></Relationships>"#;
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const SLIDE_RELS: &str = r#"<Relationship Id="rIdVml" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing" Target="../drawings/vmlDrawing1.vml"/><Relationship Id="rIdPic" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/preview.png"/>"#;
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/// An ActiveX control as PowerPoint writes it: a VML-only choice, and a fallback with its picture.
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const CONTROLS: &str = r#"<p:controls><mc:AlternateContent xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"><mc:Choice xmlns:v="urn:schemas-microsoft-com:vml" Requires="v"><p:control spid="1137" name="CheckBox1" r:id="rIdX" imgW="1933560" imgH="514440"/></mc:Choice><mc:Fallback><p:control name="CheckBox1" r:id="rIdX" imgW="1933560" imgH="514440"><p:pic><p:nvPicPr><p:cNvPr id="4" name="CheckBox1"/><p:cNvPicPr/><p:nvPr/></p:nvPicPr><p:blipFill><a:blip r:embed="rIdPic"/><a:stretch><a:fillRect/></a:stretch></p:blipFill><p:spPr><a:xfrm><a:off x="12700" y="25400"/><a:ext cx="127000" cy="63500"/></a:xfrm><a:prstGeom prst="rect"><a:avLst/></a:prstGeom></p:spPr></p:pic></p:control></mc:Fallback></mc:AlternateContent><p:control name="NoPicture" r:id="rIdY"/></p:controls>"#;
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fn png(v: u8) -> Vec<u8> {
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let mut out = Cursor::new(vec![]);
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image::DynamicImage::ImageRgb8(image::RgbImage::from_pixel(2, 2, image::Rgb([v, v, v])))
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.write_to(&mut out, image::ImageFormat::Png)
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.expect("png");
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out.into_inner()
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}
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/// A new deck whose first slide holds [`FRAME`], with the VML drawing, its rels and two pictures.
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fn deck() -> Vec<u8> {
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deck_with(FRAME)
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}
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/// [`deck`] with `frames` in place of [`FRAME`].
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fn deck_with(frames: &str) -> Vec<u8> {
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let bytes = deckcraft_pptx::export(&defaults::new_presentation(None)).expect("export");
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let mut z = 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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let o = zip::write::SimpleFileOptions::default();
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for i in 0..z.len() {
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let mut f = z.by_index(i).expect("entry");
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let mut d = vec![];
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f.read_to_end(&mut d).expect("read");
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let name = f.name().to_string();
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if name == "ppt/slides/slide1.xml" {
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let s = String::from_utf8(d).expect("utf8");
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let at = s.rfind("</p:spTree>").expect("spTree");
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let s = format!("{}{frames}{}", &s[..at], &s[at..]);
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let at = s.rfind("</p:cSld>").expect("cSld");
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d = format!("{}{CONTROLS}{}", &s[..at], &s[at..]).into_bytes();
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} else if name == "ppt/slides/_rels/slide1.xml.rels" {
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let s = String::from_utf8(d).expect("utf8");
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d = s.replace("</Relationships>", &format!("{SLIDE_RELS}</Relationships>")).into_bytes();
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}
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out.start_file(name, o).expect("start");
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out.write_all(&d).expect("write");
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}
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for (name, data) in [
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("ppt/drawings/vmlDrawing1.vml", VML.as_bytes().to_vec()),
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("ppt/drawings/_rels/vmlDrawing1.vml.rels", VML_RELS.as_bytes().to_vec()),
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("ppt/media/other.png", png(10)),
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("ppt/media/preview.png", png(200)),
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] {
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out.start_file(name, o).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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#[test]
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fn an_ole_object_without_a_picture_shows_its_vml_preview() {
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let p = deckcraft_pptx::import(&deck()).expect("import");
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let s = p.slides[0].shapes.iter().find(|s| s.name == "Object 3").expect("frame");
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let ShapeKind::Opaque { preview: Some(m), label, .. } = &s.kind else { panic!("{:?}", s.kind) };
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assert_eq!(label, "Thing.1");
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let media = p.media.iter().find(|x| x.id == *m).expect("media");
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// The shape whose id is the object's spid, not the first one in the drawing.
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assert_eq!(media.name, "preview.png");
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}
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#[test]
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fn activex_controls_show_their_pictures() {
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let p = deckcraft_pptx::import(&deck()).expect("import");
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let s = p.slides[0].shapes.iter().find(|s| s.name == "CheckBox1").expect("control picture");
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let ShapeKind::Picture { fill } = &s.kind else { panic!("{:?}", s.kind) };
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assert_eq!(p.media.iter().find(|m| m.id == fill.media).map(|m| m.name.as_str()), Some("preview.png"));
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let x = s.xfrm.expect("xfrm");
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assert_eq!((x.x, x.y, x.w, x.h), (1.0, 2.0, 10.0, 5.0));
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assert!(!p.slides[0].shapes.iter().any(|s| s.name == "NoPicture"), "a control without a picture draws nothing");
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}
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#[test]
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fn many_objects_sharing_one_vml_drawing_each_get_their_preview() {
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// 200 frames look up the same drawing (it is parsed once); every other one names a shape id
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// the drawing doesn't have.
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let frames: String = (0..200)
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.map(|i| {
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let spid = match i % 4 {
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0 => "_x0000_s2050",
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1 => "_x0000_s9999",
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2 => "_x0000_s2049",
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_ => "missing",
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};
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FRAME.replace("id=\"90\" name=\"Object 3\"", &format!("id=\"{}\" name=\"Obj {i}\"", 1000 + i)).replace("_x0000_s2050", spid)
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})
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.collect();
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let p = deckcraft_pptx::import(&deck_with(&frames)).expect("import");
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for i in 0..200 {
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let s = p.slides[0].shapes.iter().find(|s| s.name == format!("Obj {i}")).expect("frame");
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let ShapeKind::Opaque { preview, .. } = &s.kind else { panic!("{:?}", s.kind) };
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let name = preview.and_then(|m| p.media.iter().find(|x| x.id == m)).map(|m| m.name.as_str());
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let want = match i % 4 {
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0 => Some("preview.png"),
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2 => Some("other.png"),
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_ => None,
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};
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assert_eq!(name, want, "frame {i}");
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}
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}
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