Add What's New dialog, accessibility labels, focus management

pixstrip-gtk/src/app.rs

@@ -349,6 +349,7 @@ fn build_menu() -> gtk::gio::Menu {
     menu.append(Some("Settings"), Some("win.show-settings"));
     menu.append(Some("History"), Some("win.show-history"));
     menu.append(Some("Keyboard Shortcuts"), Some("win.show-shortcuts"));
+    menu.append(Some("What's New"), Some("win.show-whats-new"));
     menu
 }
 
@@ -500,6 +501,16 @@ fn setup_window_actions(window: &adw::ApplicationWindow, ui: &WizardUi) {
         action_group.add_action(&action);
     }
 
+    // What's New action
+    {
+        let window = window.clone();
+        let action = gtk::gio::SimpleAction::new("show-whats-new", None);
+        action.connect_activate(move |_, _| {
+            show_whats_new_dialog(&window);
+        });
+        action_group.add_action(&action);
+    }
+
     // Connect button clicks
     ui.back_button.connect_clicked({
         let action_group = action_group.clone();
@@ -541,6 +552,13 @@ fn navigate_to_step(ui: &WizardUi, target: usize) {
     if target < ui.pages.len() {
         ui.nav_view.replace(&ui.pages[..=target]);
         ui.title.set_subtitle(&ui.pages[target].title());
+
+        // Focus management - move focus to first interactive element on new step
+        // Use idle callback to let the page fully render first
+        let page = ui.pages[target].clone();
+        glib::idle_add_local_once(move || {
+            page.child_focus(gtk::DirectionType::TabForward);
+        });
     }
 
     // Update dynamic content on certain steps
@@ -857,6 +875,78 @@ fn show_history_dialog(window: &adw::ApplicationWindow) {
     dialog.present(Some(window));
 }
 
+fn show_whats_new_dialog(window: &adw::ApplicationWindow) {
+    let dialog = adw::Dialog::builder()
+        .title("What's New")
+        .content_width(450)
+        .content_height(350)
+        .build();
+
+    let toolbar_view = adw::ToolbarView::new();
+    let header = adw::HeaderBar::new();
+    toolbar_view.add_top_bar(&header);
+
+    let scrolled = gtk::ScrolledWindow::builder()
+        .hscrollbar_policy(gtk::PolicyType::Never)
+        .vexpand(true)
+        .build();
+
+    let content = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .spacing(12)
+        .margin_top(12)
+        .margin_bottom(12)
+        .margin_start(24)
+        .margin_end(24)
+        .build();
+
+    let version_label = gtk::Label::builder()
+        .label("Pixstrip 0.1.0")
+        .css_classes(["title-1"])
+        .halign(gtk::Align::Start)
+        .build();
+
+    let subtitle_label = gtk::Label::builder()
+        .label("First release")
+        .css_classes(["dim-label"])
+        .halign(gtk::Align::Start)
+        .build();
+
+    content.append(&version_label);
+    content.append(&subtitle_label);
+
+    let changes_group = adw::PreferencesGroup::builder()
+        .title("Changes in this version")
+        .build();
+
+    let features = [
+        ("Wizard workflow", "Step-by-step batch image processing"),
+        ("Resize", "Width/height, social media presets, fit-in-box"),
+        ("Convert", "JPEG, PNG, WebP, AVIF, GIF, TIFF conversion"),
+        ("Compress", "Quality presets with per-format controls"),
+        ("Metadata", "Strip all, privacy mode, photographer mode"),
+        ("Watermark", "Text and image watermarks with positioning"),
+        ("Rename", "Prefix, suffix, counter, template engine"),
+        ("Adjustments", "Brightness, contrast, crop, trim, effects"),
+    ];
+
+    for (title, subtitle) in &features {
+        let row = adw::ActionRow::builder()
+            .title(*title)
+            .subtitle(*subtitle)
+            .build();
+        row.add_prefix(&gtk::Image::from_icon_name("emblem-ok-symbolic"));
+        changes_group.add(&row);
+    }
+
+    content.append(&changes_group);
+
+    scrolled.set_child(Some(&content));
+    toolbar_view.set_content(Some(&scrolled));
+    dialog.set_child(Some(&toolbar_view));
+    dialog.present(Some(window));
+}
+
 fn run_processing(_window: &adw::ApplicationWindow, ui: &WizardUi) {
     let files = ui.state.loaded_files.borrow().clone();
     if files.is_empty() {