Wire quiz and plot practice for every reading-list stub book.

GTK stubs now open shared kvíz/děj pages from generated packs; Mac book screens keep practice above notes with stable titles.

Co-authored-by: Cursor <cursoragent@cursor.com>

ios/Maturita/UI/Screens.swift

@@ -1074,20 +1074,6 @@ struct BookScreen: View {
                         }
                     }
 
-                    if !notes.isEmpty {
-                        VStack(alignment: .leading, spacing: 14) {
-                            Text(vm.tr("book_notes"))
-                                #if os(macOS)
-                                .font(.title.weight(.semibold))
-                                #else
-                                .font(.title2.weight(.semibold))
-                                #endif
-                            ForEach(Array(notes.enumerated()), id: \.offset) { _, note in
-                                BookNoteCard(note: note)
-                            }
-                        }
-                    }
-
                     if hasQuiz || hasPlot {
                         VStack(alignment: .leading, spacing: 14) {
                             Text(vm.tr("book_practice"))
@@ -1099,8 +1085,8 @@ struct BookScreen: View {
                             if hasQuiz {
                                 NavigationLink(value: Route.bookQuiz(id)) {
                                     BookActionCard(
-                                        title: vm.tr(b.str("quizTitle")),
-                                        subtitle: vm.tr(b.str("quizSub")),
+                                        title: vm.tr("book_quiz_heading"),
+                                        subtitle: vm.tr("lit_quiz_sub"),
                                         systemImage: "questionmark.circle.fill",
                                         done: quizDone,
                                         doneLabel: vm.tr("book_done")
@@ -1111,8 +1097,8 @@ struct BookScreen: View {
                             if hasPlot {
                                 NavigationLink(value: Route.bookPlot(id)) {
                                     BookActionCard(
-                                        title: vm.tr(b.str("plotTitle")),
-                                        subtitle: vm.tr(b.str("plotSub")),
+                                        title: vm.tr("lit_plot_title"),
+                                        subtitle: vm.tr("lit_plot_sub"),
                                         systemImage: "list.number",
                                         done: plotDone,
                                         doneLabel: vm.tr("book_done")
@@ -1122,6 +1108,20 @@ struct BookScreen: View {
                             }
                         }
                     }
+
+                    if !notes.isEmpty {
+                        VStack(alignment: .leading, spacing: 14) {
+                            Text(vm.tr("book_notes"))
+                                #if os(macOS)
+                                .font(.title.weight(.semibold))
+                                #else
+                                .font(.title2.weight(.semibold))
+                                #endif
+                            ForEach(Array(notes.enumerated()), id: \.offset) { _, note in
+                                BookNoteCard(note: note)
+                            }
+                        }
+                    }
                 }
                 #if os(macOS)
                 .padding(28)

scripts/extract-android-content.py

@@ -1241,7 +1241,7 @@ def main() -> int:
                 "subKey": "cetba1984_sub" if quiz else "cetba_entry_sub",
                 "page": page if not entry.get("full") else (entry.get("page") or page),
                 "genre": entry.get("genre", ""),
-                "quizTitle": f"Kvíz: {display}" if quiz else "",
+                "quizTitle": "book_quiz_heading" if quiz else "",
                 "quizSub": "lit_quiz_sub" if quiz else "",
                 "plotTitle": "lit_plot_title" if plot else "",
                 "plotSub": "lit_plot_sub" if plot else "",
@@ -1336,7 +1336,7 @@ def main() -> int:
         return s.replace("\\", "\\\\").replace('"', '\\"')
 
     notes_lines = [
-        "/* Generated from data/cetba/*.json – do not edit by hand. */",
+        "/* Generated from data/cetba JSON packs – do not edit by hand. */",
         "",
         "typedef struct {",
         "    const char *title;",
@@ -1386,6 +1386,96 @@ def main() -> int:
     notes_lines.append("")
     (SRC / "cetba_book_notes.inc").write_text("\n".join(notes_lines) + "\n", encoding="utf-8")
 
+    # Quiz + plot packs for the GTK stub pages (shared by every catalog book).
+    ex_lines = [
+        "/* Generated from data/cetba JSON packs – do not edit by hand. */",
+        "/* Requires LitQ (cetba.c) and AssemblyItem (maturita.h). */",
+        "",
+        "typedef struct {",
+        "    const LitQ *qs;",
+        "    int nq;",
+        "    const AssemblyItem *plot;",
+        "    const char **plot_meaning;",
+        "    int nplot;",
+        "} BookExPack;",
+        "",
+    ]
+    ex_pack_entries = []
+    for entry in catalog:
+        bid = entry["id"]
+        safe = re.sub(r"[^a-zA-Z0-9_]", "_", bid)
+        content_path = cetba_dir / f"{bid}.json"
+        disk = {}
+        if content_path.exists():
+            disk = json.loads(content_path.read_text(encoding="utf-8"))
+        quiz = disk.get("quiz") or []
+        plot = disk.get("plot") or []
+        plot_meaning = disk.get("plotMeaning") or []
+
+        qs_name = f"book_{safe}_qs"
+        if quiz:
+            ex_lines.append(f"static const LitQ {qs_name}[] = {{")
+            for q in quiz[:32]:
+                opts = (q.get("options") or []) + ["", "", "", ""]
+                ex_lines.append("    {")
+                ex_lines.append(f'        "{c_escape(q.get("prompt") or "")}",')
+                ex_lines.append("        {")
+                for o in opts[:4]:
+                    ex_lines.append(f'            "{c_escape(o)}",')
+                ex_lines.append("        },")
+                ex_lines.append(f'        {int(q.get("correct") or 0)},')
+                ex_lines.append(f'        "{c_escape(q.get("expl") or "")}",')
+                ex_lines.append("    },")
+            ex_lines.append("};")
+            ex_lines.append("")
+            nq = min(len(quiz), 32)
+            qs_ref = qs_name
+        else:
+            nq = 0
+            qs_ref = "NULL"
+
+        plot_name = f"book_{safe}_plot"
+        mean_name = f"book_{safe}_plot_meaning"
+        if plot and isinstance(plot[0], dict):
+            words = (plot[0].get("words") or [])[:6]
+            while len(words) < 6:
+                words.append("")
+            prompt = plot[0].get("prompt") or "Přetáhněte části příběhu do správného pořadí:"
+            nwords = sum(1 for w in words if w)
+            ex_lines.append(f"static const AssemblyItem {plot_name}[] = {{")
+            ex_lines.append("    {")
+            ex_lines.append(f'        "{c_escape(prompt)}",')
+            ex_lines.append("        {")
+            for w in words:
+                ex_lines.append(f'            "{c_escape(w)}",')
+            ex_lines.append("        },")
+            ex_lines.append(f"        {nwords},")
+            ex_lines.append("    },")
+            ex_lines.append("};")
+            ex_lines.append("")
+            meaning = plot_meaning[0] if plot_meaning else ""
+            ex_lines.append(f"static const char *{mean_name}[] = {{")
+            ex_lines.append(f'    "{c_escape(meaning)}",')
+            ex_lines.append("};")
+            ex_lines.append("")
+            plot_ref = plot_name
+            mean_ref = mean_name
+            nplot = 1
+        else:
+            plot_ref = "NULL"
+            mean_ref = "NULL"
+            nplot = 0
+
+        ex_pack_entries.append(
+            f"    {{{qs_ref}, {nq}, {plot_ref}, {mean_ref}, {nplot}}}"
+        )
+
+    ex_lines.append("static const BookExPack book_ex_packs[BOOK_NODES] = {")
+    ex_lines.append(",\n".join(ex_pack_entries))
+    ex_lines.append("};")
+    ex_lines.append("")
+    (SRC / "cetba_book_exercises.inc").write_text("\n".join(ex_lines) + "\n", encoding="utf-8")
+
     subjects = [
         {"key": "Deutsch", "open": True, "target": "roadmap", "icon": "de"},
         {"key": "Správa počítačových sítí", "open": True, "target": "netyears", "icon": "wifi"},

src/cetba.c

@@ -876,7 +876,9 @@ static void lit_quiz_show(LitQuiz *z) {
     gtk_widget_set_visible(z->grid, TRUE);
     gtk_widget_set_visible(z->expl, FALSE);
     gtk_widget_set_visible(z->next, FALSE);
+    gtk_button_set_label(GTK_BUTTON(z->next), tr("lit_next"));
     z->answered = 0;
+    z->finished = 0;
 }
 
 static void lit_quiz_finish(LitQuiz *z) {
@@ -1049,6 +1051,7 @@ static GtkWidget *lit_quiz_page(const LitQ *qs, int n, const char *back,
 
     lit_quiz_show(z);
 
+    g_object_set_data(G_OBJECT(page), "lit-quiz", z);
     return page;
 }
 
@@ -1129,8 +1132,10 @@ GtkWidget *build_cetba_fuks_plot_page(void) {
 /* Reading list and 1984 overview                                     */
 /* ------------------------------------------------------------------ */
 
-static GtkWidget *lit_link_card(const char *target, const char *title,
-                                const char *sub, GtkDrawingAreaDrawFunc icon) {
+static GtkWidget *lit_link_card_ex(const char *target, const char *title,
+                                   const char *sub,
+                                   GtkDrawingAreaDrawFunc icon,
+                                   GCallback clicked) {
     GtkWidget *btn = gtk_button_new();
     GtkWidget *row = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 14);
     GtkWidget *ic;
@@ -1165,11 +1170,18 @@ static GtkWidget *lit_link_card(const char *target, const char *title,
 
     gtk_box_append(GTK_BOX(row), box);
     gtk_button_set_child(GTK_BUTTON(btn), row);
-    g_object_set_data_full(G_OBJECT(btn), "target", g_strdup(target), g_free);
-    g_signal_connect(btn, "clicked", G_CALLBACK(on_nav_clicked), NULL);
+    if (target)
+        g_object_set_data_full(G_OBJECT(btn), "target", g_strdup(target), g_free);
+    g_signal_connect(btn, "clicked",
+                     clicked ? clicked : G_CALLBACK(on_nav_clicked), NULL);
     return btn;
 }
 
+static GtkWidget *lit_link_card(const char *target, const char *title,
+                                const char *sub, GtkDrawingAreaDrawFunc icon) {
+    return lit_link_card_ex(target, title, sub, icon, NULL);
+}
+
 static void lit_note_card(GtkWidget *parent, const char *title,
                           GtkDrawingAreaDrawFunc icon,
                           const char *const *lines) {
@@ -1213,10 +1225,73 @@ static void lit_note_card(GtkWidget *parent, const char *title,
 
 #include "cetba_catalog.inc"
 #include "cetba_book_notes.inc"
+#include "cetba_book_exercises.inc"
 
 static int stub_book_idx = -1;
 static GtkWidget *stub_title_lbl;
+static GtkWidget *stub_links_box;
 static GtkWidget *stub_notes_box;
+static LitQuiz *stub_quiz;
+static GtkWidget *stub_plot_host;
+static UnitCtx stub_plot_unit;
+
+static void cetba_prepare_stub_quiz(void) {
+    const BookExPack *p;
+
+    if (!stub_quiz || stub_book_idx < 0 || stub_book_idx >= BOOK_NODES)
+        return;
+    p = &book_ex_packs[stub_book_idx];
+    if (!p->qs || p->nq <= 0)
+        return;
+    stub_quiz->qs = p->qs;
+    stub_quiz->n = p->nq;
+    stub_quiz->idx = 0;
+    stub_quiz->score = 0;
+    stub_quiz->answered = 0;
+    stub_quiz->finished = 0;
+    lit_quiz_show(stub_quiz);
+}
+
+static void cetba_prepare_stub_plot(void) {
+    GtkWidget *child;
+    const BookExPack *p;
+    GtkWidget *inner;
+
+    if (!stub_plot_host || stub_book_idx < 0 || stub_book_idx >= BOOK_NODES)
+        return;
+
+    while ((child = gtk_widget_get_first_child(stub_plot_host)))
+        gtk_box_remove(GTK_BOX(stub_plot_host), child);
+
+    p = &book_ex_packs[stub_book_idx];
+    if (!p->plot || p->nplot <= 0)
+        return;
+
+    stub_plot_unit.page = "cetbastub";
+    stub_plot_unit.progress_file = app_progress_cetba;
+    inner = build_assembly(&stub_plot_unit, tr("lit_plot_title"),
+                           "lit_plot_sub", 1, p->plot, p->plot_meaning,
+                           p->nplot);
+    gtk_widget_set_hexpand(inner, TRUE);
+    gtk_widget_set_vexpand(inner, TRUE);
+    gtk_box_append(GTK_BOX(stub_plot_host), inner);
+}
+
+static void on_stub_quiz_clicked(GtkButton *button, gpointer user_data) {
+    (void)button;
+    (void)user_data;
+    cetba_prepare_stub_quiz();
+    if (main_stack)
+        gtk_stack_set_visible_child_name(main_stack, "cetbastubquiz");
+}
+
+static void on_stub_plot_clicked(GtkButton *button, gpointer user_data) {
+    (void)button;
+    (void)user_data;
+    cetba_prepare_stub_plot();
+    if (main_stack)
+        gtk_stack_set_visible_child_name(main_stack, "cetbastubdej");
+}
 
 static GtkWidget *book_rail;
 static GtkWidget *book_nodes[BOOK_NODES];
@@ -1338,11 +1413,33 @@ void book_rail_theme_reset(void) {
 static void rebuild_stub_about(int idx) {
     GtkWidget *child;
     const BookNotePack *pack;
+    const BookExPack *ex;
     GtkDrawingAreaDrawFunc icons[4] = {
         draw_book_icon, draw_globe_icon, draw_people_icon, draw_bulb_icon
     };
 
-    if (!stub_notes_box || idx < 0 || idx >= BOOK_NODES)
+    if (idx < 0 || idx >= BOOK_NODES)
+        return;
+
+    if (stub_links_box) {
+        while ((child = gtk_widget_get_first_child(stub_links_box)))
+            gtk_box_remove(GTK_BOX(stub_links_box), child);
+        ex = &book_ex_packs[idx];
+        if (ex->qs && ex->nq > 0)
+            gtk_box_append(GTK_BOX(stub_links_box),
+                           lit_link_card_ex(NULL, "book_quiz_heading",
+                                           "lit_quiz_sub", draw_quiz_icon,
+                                           G_CALLBACK(on_stub_quiz_clicked)));
+        if (ex->plot && ex->nplot > 0)
+            gtk_box_append(GTK_BOX(stub_links_box),
+                           lit_link_card_ex(NULL, "lit_plot_title",
+                                           "lit_plot_sub", draw_order_icon,
+                                           G_CALLBACK(on_stub_plot_clicked)));
+        gtk_widget_set_visible(stub_links_box,
+                               gtk_widget_get_first_child(stub_links_box) != NULL);
+    }
+
+    if (!stub_notes_box)
         return;
 
     while ((child = gtk_widget_get_first_child(stub_notes_box)))
@@ -1631,6 +1728,7 @@ GtkWidget *build_cetba_stub_page(void) {
     GtkWidget *top;
     GtkWidget *center;
     GtkWidget *scroll;
+    GtkWidget *body;
     GtkWidget *sub;
 
     page = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
@@ -1673,12 +1771,37 @@ GtkWidget *build_cetba_stub_page(void) {
     gtk_widget_set_margin_bottom(scroll, 14);
     gtk_box_append(GTK_BOX(page), scroll);
 
+    body = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+    gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scroll), body);
+
+    stub_links_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
+    gtk_widget_set_margin_bottom(stub_links_box, 14);
+    gtk_box_append(GTK_BOX(body), stub_links_box);
+
     stub_notes_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
-    gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scroll), stub_notes_box);
+    gtk_box_append(GTK_BOX(body), stub_notes_box);
 
     return page;
 }
 
+GtkWidget *build_cetba_stub_quiz_page(void) {
+    const LitQ *qs = book_ex_packs[0].qs;
+    int n = book_ex_packs[0].nq > 0 ? book_ex_packs[0].nq : 1;
+    GtkWidget *page;
+
+    page = lit_quiz_page(qs, n, "cetbastub",
+                         "book_quiz_heading", "lit_quiz_sub");
+    stub_quiz = g_object_get_data(G_OBJECT(page), "lit-quiz");
+    return page;
+}
+
+GtkWidget *build_cetba_stub_plot_page(void) {
+    stub_plot_host = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+    gtk_widget_set_hexpand(stub_plot_host, TRUE);
+    gtk_widget_set_vexpand(stub_plot_host, TRUE);
+    return stub_plot_host;
+}
+
 void cetba_open_stub(int idx) {
     if (idx < 0 || idx >= BOOK_NODES || book_defs[idx].full)
         return;

src/cetba_book_notes.inc

@@ -1,4 +1,4 @@
-/* Generated from data/cetba/*.json – do not edit by hand. */
+/* Generated from data/cetba JSON packs – do not edit by hand. */
 
 typedef struct {
     const char *title;

src/i18n.c

@@ -556,6 +556,7 @@ const TrEntry tr_ui[] = {
     {"book_practice", "Procvičení", "Practice"},
     {"book_done", "Hotovo", "Done"},
     {"book_open", "Otevřít", "Open"},
+    {"book_quiz_heading", "Kvíz", "Quiz"},
     {"book_1984_sub", "Antiutopický román • 1949", "Dystopian novel • 1949"},
     {"cetba1984_sub", "Přehled knihy, klíčové pojmy a cvičení.",
      "Book overview, key terms and exercises."},

src/main.c

@@ -520,6 +520,10 @@ void activate(GtkApplication *app, gpointer user_data) {
     gtk_stack_add_named(main_stack, build_cetba_fuks_plot_page(),
                         "cetbaFuksDej");
     gtk_stack_add_named(main_stack, build_cetba_stub_page(), "cetbastub");
+    gtk_stack_add_named(main_stack, build_cetba_stub_quiz_page(),
+                        "cetbastubquiz");
+    gtk_stack_add_named(main_stack, build_cetba_stub_plot_page(),
+                        "cetbastubdej");
     gtk_stack_add_named(main_stack, build_hw_unit1_page(), "hwunit1");
     gtk_stack_add_named(main_stack, build_hw_unit1_exercise_page(), "hwex1");
     gtk_stack_add_named(main_stack, build_hw_unit2_page(), "hwunit2");

src/maturita.h

@@ -852,6 +852,8 @@ GtkWidget *build_cetba_fuks_page(void);
 GtkWidget *build_cetba_fuks_quiz_page(void);
 GtkWidget *build_cetba_fuks_plot_page(void);
 GtkWidget *build_cetba_stub_page(void);
+GtkWidget *build_cetba_stub_quiz_page(void);
+GtkWidget *build_cetba_stub_plot_page(void);
 void cetba_register_search(void);
 void cetba_open_stub(int idx);
 void search_catalog_add(const char *title, const char *subtitle,