Merge PR #2731: Layers panel: Reset to Initial Visibility

Conflicts:
- ATTRIBUTION.toml: ours (sha256 lines only); hashes recomputed at the end of the track
- crates/engine/Cargo.toml: main's workspace chrono entry, plus the PR's pdfcraft-testkit dev-dependency

Cargo.lock

@@ -4134,6 +4134,7 @@ dependencies = [
  "pdfcraft-redact",
  "pdfcraft-render",
  "pdfcraft-sign",
+ "pdfcraft-testkit",
  "pdfcraft-xfa",
  "pdfcraft-xfdf",
  "png 0.18.1",

crates/automation/src/lib.rs

@@ -2473,7 +2473,7 @@ fn info(d: &Document) -> Value {
                 pdfcraft_render::LinkTarget::Other(o) => json!({ "other": o }),
             },
         })).collect::<Vec<_>>(),
-        "layers": i.layers.iter().map(|l| json!({ "name": l.name, "visible": l.visible })).collect::<Vec<_>>(),
+        "layers": i.layers.iter().map(|l| json!({ "name": l.name, "visible": l.visible, "initial": l.initial })).collect::<Vec<_>>(),
         // Full-screen presentation settings a page carries (ISO 32000-2 §12.4.4): only pages with
         // a `/Trans` or `/Dur` appear; `style` is null for a display time alone.
         "transitions": i.transitions.iter().map(|t| json!({

crates/automation/tests/automation.rs

@@ -5832,12 +5832,13 @@ fn doc_info_says_when_a_runaway_script_turned_the_forms_scripts_off() {
     let _ = std::fs::remove_dir_all(dir);
 }
 
-/// doc_info describes a link's set-layer-visibility action by layer name.
+/// doc_info describes a link's set-layer-visibility action by layer name, and each layer's
+/// visibility now and as the file opens.
 #[test]
 fn doc_info_describes_set_layer_links() {
     let dir = workdir("layer-links");
     let objs = [
-        "<< /Type /Catalog /Pages 2 0 R /OCProperties << /OCGs [4 0 R 5 0 R] /D << >> >> >>",
+        "<< /Type /Catalog /Pages 2 0 R /OCProperties << /OCGs [4 0 R 5 0 R] /D << /OFF [5 0 R] >> >> >>",
         "<< /Type /Pages /Kids [3 0 R] /Count 1 >>",
         "<< /Type /Page /Parent 2 0 R /MediaBox [0 0 200 200] /Annots [6 0 R] >>",
         "<< /Type /OCG /Name (Red) >>",
@@ -5868,6 +5869,7 @@ fn doc_info_describes_set_layer_links() {
             "preserve_rb": false,
         })
     );
+    assert_eq!(info["layers"], json!([{ "name": "Red", "visible": true, "initial": true }, { "name": "Green", "visible": false, "initial": false }]));
 }
 
 mod close_argument_tests {

crates/engine/Cargo.toml

@@ -51,3 +51,6 @@ unicode-segmentation = "1.13"
 # Already in the graph through lopdf; used only for the local UTC offset ("today"). The workspace
 # entry is std-only; this target adds `clock` for `chrono::Local::now`.
 chrono = { workspace = true, features = ["clock"] }
+
+[dev-dependencies]
+pdfcraft-testkit = { workspace = true }

crates/engine/src/lib.rs

@@ -4819,6 +4819,22 @@ impl Session {
         true
     }
 
+    /// Show each layer as the file opens (Acrobat's Layers ▸ Reset to Initial Visibility). Returns
+    /// `true` if any layer changed; callers must drop cached rasters and text for the document,
+    /// as for [`Self::set_layer_visible`].
+    pub fn reset_layers(&mut self, id: DocId) -> bool {
+        let Some(doc) = self.docs.iter_mut().find(|d| d.id == id) else { return false };
+        let mut changed = false;
+        for l in &mut doc.info.layers {
+            changed |= l.visible != l.initial;
+            l.visible = l.initial;
+        }
+        if changed {
+            use_layer_choices(doc);
+        }
+        changed
+    }
+
     /// Hide or show every comment on the page (Acrobat's Comments ▸ Hide all comments). Form
     /// fields and links still draw. Returns whether anything changed.
     pub fn set_hide_comments(&mut self, id: DocId, hide: bool) -> bool {

crates/engine/src/tests.rs

@@ -685,7 +685,7 @@ fn layer_choices_survive_edits() {
 #[test]
 fn set_layer_actions_toggle_in_order_and_keep_radio_groups() {
     use pdfcraft_render::LayerOp::{Off, On, Toggle};
-    let layer = |n: u32, visible: bool| Layer { id: (n, 0), name: format!("L{n}"), visible };
+    let layer = |n: u32, visible: bool| Layer { id: (n, 0), name: format!("L{n}"), visible, initial: visible };
     let run = |changes: &[(LayerOp, u32)], preserve_rb: bool| {
         // L1 and L2 are a radio-button group; L3 is on its own.
         let mut layers = vec![layer(1, true), layer(2, false), layer(3, true)];
@@ -761,6 +761,59 @@ fn set_layer_actions_change_what_renders() {
     assert!(!s.set_layer_state(DocId(999), &[(LayerOp::On, (5, 0))], true));
 }
 
+#[test]
+fn reset_layers_returns_to_the_files_visibility() {
+    // Red (left half, on) and Green (right half, off) are a radio-button group.
+    let content = "/OC /R BDC 1 0 0 rg 0 0 50 100 re f EMC /OC /G BDC 0 1 0 rg 50 0 50 100 re f EMC";
+    let pdf = pdfcraft_testkit::Pdf::new()
+        .obj("<< /Type /Catalog /Pages 2 0 R /OCProperties << /OCGs [5 0 R 6 0 R] /D << /OFF [6 0 R] /RBGroups [[5 0 R 6 0 R]] >> >> >>")
+        .obj("<< /Type /Pages /Kids [3 0 R] /Count 1 >>")
+        .obj("<< /Type /Page /Parent 2 0 R /MediaBox [0 0 100 100] /Contents 4 0 R /Resources << /Properties << /R 5 0 R /G 6 0 R >> >> >>")
+        .stream("", content)
+        .obj("<< /Type /OCG /Name (Red) >>")
+        .obj("<< /Type /OCG /Name (Green) >>")
+        .build();
+    // A page drawing on layer Blue, which that file has off.
+    let other = pdfcraft_testkit::Pdf::new()
+        .obj("<< /Type /Catalog /Pages 2 0 R /OCProperties << /OCGs [5 0 R] /D << /OFF [5 0 R] >> >> >>")
+        .obj("<< /Type /Pages /Kids [3 0 R] /Count 1 >>")
+        .obj("<< /Type /Page /Parent 2 0 R /MediaBox [0 0 100 100] /Contents 4 0 R /Resources << /Properties << /B 5 0 R >> >> >>")
+        .stream("", "/OC /B BDC 0 0 1 rg 0 0 10 10 re f EMC")
+        .obj("<< /Type /OCG /Name (Blue) >>")
+        .build();
+    let mut s = Session::new();
+    let id = s.open("layers.pdf", None, Arc::new(pdf), None).unwrap();
+    let shown = |s: &Session| s.get(id).unwrap().info.layers.iter().map(|l| (l.name.clone(), l.visible)).collect::<Vec<_>>();
+    let left = |s: &Session| {
+        let doc = s.get(id).unwrap();
+        let mut r = pdfcraft_render::PageRenderer::new(doc.bytes.clone(), doc.config.clone());
+        let p = r.render(pdfcraft_render::RenderRequest { page: 0, kind: pdfcraft_render::RequestKind::Pixels, scale: 1.0, ..Default::default() });
+        let i = (50 * p.width as usize + 25) * 4;
+        p.rgba[i..i + 3].to_vec()
+    };
+    assert!(s.set_layer_state(id, &[(LayerOp::On, (6, 0))], true));
+    let edit = Edit::InsertPagesFrom {
+        name: "b.pdf".into(),
+        bytes: Arc::new(other),
+        pages: None,
+        at: 1,
+        field_conflicts: pdfcraft_organize::FieldConflicts::Rename,
+    };
+    s.apply(id, edit).unwrap();
+    let blue = s.get(id).unwrap().info.layers.iter().position(|l| l.name == "Blue").unwrap();
+    assert!(s.set_layer_visible(id, blue, true));
+    assert_eq!(shown(&s), [("Red".into(), false), ("Green".into(), true), ("Blue".into(), true)]);
+    assert_eq!(left(&s), [255, 255, 255]);
+    // Every layer, the inserted one too, goes back to the file's default configuration.
+    assert!(s.reset_layers(id));
+    assert_eq!(shown(&s), [("Red".into(), true), ("Green".into(), false), ("Blue".into(), false)]);
+    assert_eq!(left(&s), [255, 0, 0]);
+    assert!(!s.reset_layers(id), "already as the file opens");
+    // What the eye sees is not an edit: Undo still undoes the insert.
+    assert_eq!(s.get(id).unwrap().can_undo(), Some("Insert pages from b.pdf"));
+    assert!(!s.reset_layers(DocId(999)));
+}
+
 #[test]
 fn edits_to_unknown_documents_are_rejected() {
     let (mut s, _) = session_with(1);

crates/render/src/inspect.rs

@@ -425,6 +425,8 @@ pub struct Layer {
     pub id: (u32, u16),
     pub name: String,
     pub visible: bool,
+    /// Shown as the file opens: the default configuration (`/OCProperties /D`).
+    pub initial: bool,
 }
 
 #[derive(Clone, Debug)]
@@ -1428,7 +1430,7 @@ impl<'a> Inspector<'a> {
                 _ => !base_off,
             };
             let Some(id) = id else { continue };
-            out.push(Layer { id, name: self.text(d, b"Name").unwrap_or_else(|| "Layer".into()), visible });
+            out.push(Layer { id, name: self.text(d, b"Name").unwrap_or_else(|| "Layer".into()), visible, initial: visible });
         }
     }
 
@@ -2358,6 +2360,24 @@ trailer << /Root 1 0 R /Info 4 0 R >>
         assert_eq!(info.layer_groups, [vec![(5, 0), (6, 0)], vec![(6, 0), (7, 0)]]);
     }
 
+    #[test]
+    fn initial_layer_visibility_is_the_default_configuration() {
+        // BaseState OFF: Red is listed ON; Green is listed both ON and OFF, and OFF wins; Blue
+        // isn't listed, so it takes the base state.
+        let pdf = b"%PDF-1.7
+1 0 obj << /Type /Catalog /Pages 2 0 R /OCProperties << /OCGs [5 0 R 6 0 R 7 0 R] /D << /BaseState /OFF /ON [5 0 R 6 0 R] /OFF [6 0 R] >> >> >> endobj
+2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj
+3 0 obj << /Type /Page /Parent 2 0 R /MediaBox [0 0 200 200] >> endobj
+5 0 obj << /Type /OCG /Name (Red) >> endobj
+6 0 obj << /Type /OCG /Name (Green) >> endobj
+7 0 obj << /Type /OCG /Name (Blue) >> endobj
+trailer << /Root 1 0 R >>
+%%EOF";
+        let info = inspect(Arc::new(pdf.to_vec()), None).expect("opens");
+        let layers: Vec<_> = info.layers.iter().map(|l| (l.name.as_str(), l.initial)).collect();
+        assert_eq!(layers, [("Red", true), ("Green", false), ("Blue", false)]);
+    }
+
     const ORPHAN_FIELDS: &[u8] = b"%PDF-1.7
 1 0 obj << /Type /Catalog /Pages 2 0 R /AcroForm 4 0 R >> endobj
 2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj

crates/ui-egui/src/i18n/ar.tsv

@@ -1362,6 +1362,8 @@
 	This document has no layers.	هذا المستند لا يحتوي على طبقات.
 	This document has no attachments.	هذا المستند لا يحتوي على مرفقات.
 	Hide layer	إخفاء الطبقة
+	Layer options	خيارات الطبقات
+	Reset to Initial Visibility	إعادة تعيين إلى الرؤية الأولية
 	Show layer	إظهار الطبقة
 	Set layer visibility	ضبط ظهور الطبقة
 	on page {label}	في الصفحة {label}

crates/ui-egui/src/i18n/bg.tsv

@@ -1304,6 +1304,8 @@
 	This document has no layers.	Този документ няма слоеве.
 	This document has no attachments.	Този документ няма прикачени файлове.
 	Hide layer	Скрий слоя
+	Layer options	Опции за слоеве
+	Reset to Initial Visibility	Възстанови първоначалната видимост
 	Show layer	Покажи слоя
 	Set layer visibility	Задай видимост на слоя
 	on page {label}	на страница {label}

crates/ui-egui/src/i18n/cs.tsv

@@ -1431,6 +1431,8 @@ key	Space	Mezerník
 	This document has no layers.	Tento dokument nemá žádné vrstvy.
 	This document has no attachments.	Tento dokument nemá žádné přílohy.
 	Hide layer	Skrýt vrstvu
+	Layer options	Možnosti vrstev
+	Reset to Initial Visibility	Obnovit počáteční viditelnost
 	Show layer	Zobrazit vrstvu
 	Set layer visibility	Nastavit viditelnost vrstvy
 	on page {label}	na stránce {label}

crates/ui-egui/src/i18n/de.tsv

@@ -1348,6 +1348,8 @@
 	This document has no layers.	Dieses Dokument hat keine Ebenen.
 	This document has no attachments.	Dieses Dokument hat keine Anhänge.
 	Hide layer	Ebene ausblenden
+	Layer options	Ebenenoptionen
+	Reset to Initial Visibility	Ursprüngliche Sichtbarkeit wiederherstellen
 	Show layer	Ebene einblenden
 	on page {label}	auf Seite {label}
 	Save attachment…	Anhang speichern…

crates/ui-egui/src/i18n/el.tsv

@@ -363,6 +363,8 @@
 	Distribute	Κατανομή
 	Show layer	Εμφάνιση επιπέδου
 	Hide layer	Απόκρυψη επιπέδου
+	Layer options	Επιλογές επιπέδων
+	Reset to Initial Visibility	Επαναφορά αρχικής ορατότητας
 	Collate	Συρραφή αντιγράφων
 	Fit to page	Προσαρμογή στη σελίδα
 	Reverse pages	Αντιστροφή σειράς σελίδων

crates/ui-egui/src/i18n/es.tsv

@@ -1357,6 +1357,8 @@
 	This document has no layers.	Este documento no tiene capas.
 	This document has no attachments.	Este documento no tiene archivos adjuntos.
 	Hide layer	Ocultar capa
+	Layer options	Opciones de capas
+	Reset to Initial Visibility	Restablecer visibilidad inicial
 	Show layer	Mostrar capa
 	Set layer visibility	Definir visibilidad de capas
 	on page {label}	en la página {label}

crates/ui-egui/src/i18n/fr.tsv

@@ -1343,6 +1343,8 @@
 	This document has no layers.	Ce document ne contient aucun calque.
 	This document has no attachments.	Ce document ne contient aucune pièce jointe.
 	Hide layer	Masquer le calque
+	Layer options	Options des calques
+	Reset to Initial Visibility	Rétablir la visibilité initiale
 	Show layer	Afficher le calque
 	on page {label}	à la page {label}
 	Save attachment…	Enregistrer la pièce jointe…

crates/ui-egui/src/i18n/hu.tsv

@@ -1333,6 +1333,8 @@
 	This document has no layers.	Ebben a dokumentumban nincs réteg.
 	This document has no attachments.	Ebben a dokumentumban nincs melléklet.
 	Hide layer	Réteg elrejtése
+	Layer options	Réteg beállításai
+	Reset to Initial Visibility	Kezdeti láthatóság visszaállítása
 	Show layer	Réteg megjelenítése
 	on page {label}	{label}. oldal
 	Save attachment…	Melléklet mentése…

crates/ui-egui/src/i18n/it.tsv

@@ -1358,6 +1358,8 @@
 	This document has no layers.	Questo documento non ha livelli.
 	This document has no attachments.	Questo documento non ha allegati.
 	Hide layer	Nascondi livello
+	Layer options	Opzioni livelli
+	Reset to Initial Visibility	Ripristina visibilità iniziale
 	Show layer	Mostra livello
 	Set layer visibility	Imposta visibilità livello
 	on page {label}	a pagina {label}

crates/ui-egui/src/i18n/ja.tsv

@@ -1363,6 +1363,8 @@
 	This document has no layers.	この文書にレイヤーはありません。
 	This document has no attachments.	この文書に添付ファイルはありません。
 	Hide layer	レイヤーを非表示
+	Layer options	レイヤーのオプション
+	Reset to Initial Visibility	初期表示状態にリセット
 	Show layer	レイヤーを表示
 	Set layer visibility	レイヤーの表示を設定
 	on page {label}	ページ {label}

crates/ui-egui/src/i18n/kk.tsv

@@ -1305,6 +1305,8 @@
 	This document has no layers.	Бұл құжатта қабаттар жоқ.
 	This document has no attachments.	Бұл құжатта тіркемелер жоқ.
 	Hide layer	Қабатты жасыру
+	Layer options	Қабат параметрлері
+	Reset to Initial Visibility	Бастапқы көрінуді қалпына келтіру
 	Show layer	Қабатты көрсету
 	Set layer visibility	Қабаттың көрінісін орнату
 	on page {label}	{label} бетінде

crates/ui-egui/src/i18n/lt.tsv

@@ -629,6 +629,8 @@
 	Height:	Aukštis:
 	Hide field highlights	Slėpti laukų paryškinimą
 	Hide layer	Slėpti sluoksnį
+	Layer options	Sluoksnių parinktys
+	Reset to Initial Visibility	Atkurti pradinį matomumą
 	Hide menu bar	Slėpti meniu juostą
 	Hide password	Slėpti slaptažodį
 	Hide toolbars	Slėpti įrankių juostas

crates/ui-egui/src/i18n/pl.tsv

@@ -1348,6 +1348,8 @@
 	This document has no layers.	Ten dokument nie zawiera warstw.
 	This document has no attachments.	Ten dokument nie zawiera załączników.
 	Hide layer	Ukryj warstwę
+	Layer options	Opcje warstw
+	Reset to Initial Visibility	Przywróć początkową widoczność
 	Show layer	Pokaż warstwę
 	Set layer visibility	Ustaw widoczność warstwy
 	on page {label}	na stronie {label}

crates/ui-egui/src/i18n/pt-br.tsv

@@ -1248,6 +1248,8 @@
 	This document has no layers.	Este documento não tem camadas.
 	This document has no attachments.	Este documento não tem anexos.
 	Hide layer	Ocultar camada
+	Layer options	Opções de camadas
+	Reset to Initial Visibility	Redefinir visibilidade inicial
 	Show layer	Mostrar camada
 	on page {label}	na página {label}
 	Save attachment…	Salvar anexo…

crates/ui-egui/src/i18n/ru.tsv

@@ -1363,6 +1363,8 @@
 	This document has no layers.	В этом документе нет слоёв.
 	This document has no attachments.	В этом документе нет вложений.
 	Hide layer	Скрыть слой
+	Layer options	Параметры слоёв
+	Reset to Initial Visibility	Восстановить исходную видимость
 	Show layer	Показать слой
 	Set layer visibility	Задать видимость слоя
 	on page {label}	на стр. {label}

crates/ui-egui/src/i18n/sl.tsv

@@ -902,6 +902,8 @@
 	Hide all comments	Skrij vse komentarje
 	Hide field highlights	Skrij osvetlitev polj
 	Hide layer	Skrij plast
+	Layer options	Možnosti plasti
+	Reset to Initial Visibility	Ponastavi na začetno vidnost
 	Hide menu bar	Skrij menijsko vrstico
 	Hide password	Skrij geslo
 	Hide toolbars	Skrij orodne vrstice

crates/ui-egui/src/i18n/te.tsv

@@ -1333,6 +1333,8 @@ signature pad	Type	టైప్ చేయి
 	This document has no layers.	ఈ పత్రంలో లేయర్‌లు లేవు.
 	This document has no attachments.	ఈ పత్రంలో జోడింపులు లేవు.
 	Hide layer	లేయర్‌ను దాచు
+	Layer options	లేయర్ ఎంపికలు
+	Reset to Initial Visibility	ప్రారంభ దృశ్యతకు రీసెట్ చేయి
 	Show layer	లేయర్‌ను చూపించు
 	on page {label}	పేజీ {label}లో
 	Save attachment…	జోడింపును సేవ్ చేయి…

crates/ui-egui/src/i18n/tr.tsv

@@ -1320,6 +1320,8 @@
 	This document has no layers.	Bu belgede katman yok.
 	This document has no attachments.	Bu belgede ek yok.
 	Hide layer	Katmanı gizle
+	Layer options	Katman seçenekleri
+	Reset to Initial Visibility	Başlangıç görünürlüğüne sıfırla
 	Show layer	Katmanı göster
 	on page {label}	sayfa {label} üzerinde
 	Save attachment…	Eki kaydet…

crates/ui-egui/src/i18n/uk.tsv

@@ -1360,6 +1360,8 @@
 	This document has no layers.	Цей документ не має шарів.
 	This document has no attachments.	Цей документ не має вкладень.
 	Hide layer	Приховати шар
+	Layer options	Параметри шарів
+	Reset to Initial Visibility	Відновити початкову видимість
 	Show layer	Показати шар
 	Set layer visibility	Задати видимість шару
 	on page {label}	на сторінці {label}

crates/ui-egui/src/i18n/vi.tsv

@@ -625,6 +625,8 @@ theme	Appearance	Giao diện
 	Height:	Chiều cao:
 	Hide field highlights	Ẩn tô sáng trường
 	Hide layer	Ẩn lớp
+	Layer options	Tùy chọn lớp
+	Reset to Initial Visibility	Đặt lại khả năng hiển thị ban đầu
 	Hide menu bar	Ẩn thanh trình đơn
 	Hide password	Ẩn mật khẩu
 	Hide toolbars	Ẩn thanh công cụ

crates/ui-egui/src/i18n/zh-hans.tsv

@@ -1311,6 +1311,8 @@
 	This document has no layers.	本文档没有图层。
 	This document has no attachments.	本文档没有附件。
 	Hide layer	隐藏图层
+	Layer options	图层选项
+	Reset to Initial Visibility	重置为初始可见性
 	Show layer	显示图层
 	Set layer visibility	设置图层可见性
 	on page {label}	第 {label} 页

crates/ui-egui/src/i18n/zh-hant.tsv

@@ -1255,6 +1255,8 @@
 	This document has no layers.	本文件沒有圖層。
 	This document has no attachments.	本文件沒有附件。
 	Hide layer	隱藏圖層
+	Layer options	圖層選項
+	Reset to Initial Visibility	重設為初始可見性
 	Show layer	顯示圖層
 	Set layer visibility	設定圖層可見性
 	on page {label}	第 {label} 頁

crates/ui-egui/src/panels.rs

@@ -653,6 +653,7 @@ pub fn right_panel(app: &mut PdfCraftApp, ui: &mut egui::Ui) {
     let mut nav: Option<Nav> = None;
     let mut close = false;
     let mut toggle_layer: Option<(usize, bool)> = None;
+    let mut reset_layers = false;
     let mut attachment_action: Option<(usize, bool)> = None; // (index, open instead of save)
     let mut bm_action: Option<BmAction> = None;
     let mut bm_expand: Option<usize> = None;
@@ -745,6 +746,16 @@ pub fn right_panel(app: &mut PdfCraftApp, ui: &mut egui::Ui) {
                                 }
                             });
                         }
+                        if panel == RightPanel::Layers && !info.layers.is_empty() {
+                            let more = icons::button(ui, "ellipsis", 26.0, false, tl!("Layer options"));
+                            egui::Popup::menu(&more).show(|ui| {
+                                ui.set_min_width(200.0);
+                                if ui.button(tl!("Reset to Initial Visibility")).clicked() {
+                                    reset_layers = true;
+                                    ui.close();
+                                }
+                            });
+                        }
                         let new_tip = crate::commands::command_tip(ui.ctx(), tl!("New bookmark ({key})"), "bookmark.add");
                         if panel == RightPanel::Bookmarks && bm_editable && icons::button(ui, "bookmark-plus", 26.0, false, &new_tip).clicked() {
                             bm_action = Some(BmAction::New);
@@ -968,6 +979,9 @@ pub fn right_panel(app: &mut PdfCraftApp, ui: &mut egui::Ui) {
     {
         app.views[index].invalidate_content();
     }
+    if reset_layers && app.session.reset_layers(id) {
+        app.views[index].invalidate_content();
+    }
     match nav {
         Some(Nav::Page(p)) => app.views[index].go_to_page(p),
         Some(Nav::Dest(p, dest)) => match app.session.get(id) {

crates/ui-egui/tests/ui_group/layer_actions.rs

@@ -104,3 +104,23 @@ fn push_buttons_set_layer_visibility() {
     let s = h.state();
     assert!(!s.session.get(s.views[0].id).unwrap().dirty, "showing and hiding layers doesn't change the document");
 }
+
+#[test]
+fn layer_options_reset_to_initial_visibility() {
+    // Red off and Green on: the opposite of how the file opens.
+    let mut h = harness(|app| {
+        app.set_option("layer", "Red=off").unwrap();
+        app.set_option("layer", "Green=on").unwrap();
+        app.set_option("panel", "layers").unwrap();
+    });
+    assert_eq!(shown(&h), layers(false, true));
+    h.get_by_label("Layer options").click();
+    h.run_steps(2);
+    h.get_by_label("Reset to Initial Visibility").click();
+    h.run_steps(3);
+    assert_eq!(shown(&h), layers(true, false));
+    let s = h.state();
+    let doc = s.session.get(s.views[0].id).unwrap();
+    assert!(!doc.dirty, "showing and hiding layers doesn't change the document");
+    assert_eq!(doc.can_undo(), None, "nor is it an edit to undo");
+}

docs/pdf-spec-parity.md

@@ -52,7 +52,7 @@ are borrowed; PDF 2.0 additions and most subset standards are missing. **150–2
 | §14.12 | Document parts (DPart) | yes | none | `core.pdf20-dpart` planned |
 | §14.13 | Associated files (`/AF`) | yes | none | `core.pdf20-associated-files` planned |
 | — | Structural validation (Arlington PDF model) | yes (Preflight syntax checks) | none | `core.arlington-validation` planned |
-| — | Optional content (layers) | full | **own** toggle and default state; set-OCG-state actions; no layer editing | `view.layers-panel` |
+| — | Optional content (layers) | full | **own** toggle and default state, reset to the default state; set-OCG-state actions; no layer editing | `view.layers-panel`, `view.layers-reset` |
 | — | Redaction (`/Redact` annotations, applying) | full | **own**: removes glyphs, image pixels, vectors, XObject content, annotations, fields and tags; verifies no residue | `protect.redact-*`, `protect.redaction-verification` |
 
 ## Annotations (§12.5.6)

parity/acrobat-features.toml

@@ -1331,11 +1331,11 @@ title = "Reset layers to initial visibility; list for all or current pages"
 area = "B"
 tier = "P2"
 milestone = "M12"
-status = "planned"
+status = "partial"
 commands = []
-tools = []
-evidence = []
-notes = ""
+tools = ["doc_info"]
+evidence = ["crates/engine/src/tests.rs::reset_layers_returns_to_the_files_visibility", "crates/render/src/inspect.rs::initial_layer_visibility_is_the_default_configuration"]
+notes = "Layers panel ▸ Layer options ▸ Reset to Initial Visibility shows each layer as the default configuration (/OCProperties /D) has it; doc_info reports it as `initial`. Not yet: listing the layers of all pages or the current page only."
 
 [[feature]]
 id = "view.destinations-panel"