Fix initial document display and set Fit mode as default

- Cache rendered image handle on startup to fix 'No document loaded' issue
- Set ViewMode::Fit as default for initial load and navigation
- Disable tooltips in header (too ugly)
- Temporarily disable main menu button (needs proper implementation)

src/ui/app.rs

@@ -4,7 +4,7 @@
 // COSMIC application wiring and main app struct.
 
 use super::message::AppMessage;
-use super::model::AppModel;
+use super::model::{AppModel, ViewMode};
 use super::update;
 use crate::ui::views;
 
@@ -73,8 +73,6 @@ impl cosmic::Application for NoctuaApp {
                 Err(_) => (AppConfig::default(), None),
             };
 
-        let mut model = AppModel::new(config.clone());
-
         let Flags::Args(args) = flags;
 
         // Determine initial path: CLI argument takes priority.
@@ -90,10 +88,31 @@ impl cosmic::Application for NoctuaApp {
         // Initialize document manager
         let mut document_manager = DocumentManager::new();
 
+        // Initialize model
+        let mut model = AppModel::new(config.clone());
+
         // Load initial document if provided
         if let Some(path) = initial_path {
             if let Err(e) = document_manager.open_document(&path) {
                 log::error!("Failed to open initial path {}: {}", path.display(), e);
+            } else {
+                // Set initial view mode to Fit
+                model.viewport.fit_mode = ViewMode::Fit;
+                model.viewport.scale = 1.0;
+                model.reset_pan();
+
+                // Cache initial render so image is displayed immediately
+                if let Some(doc) = document_manager.current_document_mut() {
+                    use crate::domain::document::core::document::Renderable;
+                    match doc.render(model.viewport.scale as f64) {
+                        Ok(output) => {
+                            model.viewport.cached_image_handle = Some(output.handle);
+                        }
+                        Err(e) => {
+                            log::error!("Failed to render initial document: {}", e);
+                        }
+                    }
+                }
             }
         }
 

src/ui/update.rs

@@ -48,7 +48,7 @@ pub fn update(app: &mut NoctuaApp, msg: &AppMessage) -> UpdateResult {
             {
                 // Reset zoom when navigating to new document
                 app.model.viewport.scale = 1.0;
-                app.model.viewport.fit_mode = ViewMode::ActualSize;
+                app.model.viewport.fit_mode = ViewMode::Fit;
                 app.model.reset_pan();
                 cache_render(&mut app.model, &mut app.document_manager);
             }
@@ -61,7 +61,7 @@ pub fn update(app: &mut NoctuaApp, msg: &AppMessage) -> UpdateResult {
             {
                 // Reset zoom when navigating to new document
                 app.model.viewport.scale = 1.0;
-                app.model.viewport.fit_mode = ViewMode::ActualSize;
+                app.model.viewport.fit_mode = ViewMode::Fit;
                 app.model.reset_pan();
                 cache_render(&mut app.model, &mut app.document_manager);
             }

src/ui/views/header.rs

@@ -25,23 +25,23 @@ pub fn start<'a>(
         .spacing(4)
         .push(
             button::icon(icon::from_name("view-sidebar-start-symbolic"))
-                .on_press(AppMessage::ToggleNavBar)
+                .on_press(AppMessage::ToggleNavBar),
-                .tooltip(fl!("tooltip-nav-toggle")),
+            //.tooltip(fl!("tooltip-nav-toggle")),
-        )
-        .push(
-            button::icon(icon::from_name("open-menu-symbolic"))
-                .on_press(AppMessage::ToggleMainMenu)
-                .tooltip(fl!("menu-main")),
         )
+        // .push(
+        //     button::icon(icon::from_name("open-menu-symbolic"))
+        //         .on_press(AppMessage::ToggleMainMenu),
+        //     //.tooltip(fl!("menu-main")),
+        // )
         .push(
             button::icon(icon::from_name("go-previous-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::PrevDocument))
+                .on_press_maybe(has_doc.then_some(AppMessage::PrevDocument)),
-                .tooltip(fl!("tooltip-nav-previous")),
+            //.tooltip(fl!("tooltip-nav-previous")),
         )
         .push(
             button::icon(icon::from_name("go-next-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::NextDocument))
+                .on_press_maybe(has_doc.then_some(AppMessage::NextDocument)),
-                .tooltip(fl!("tooltip-nav-next")),
+            //.tooltip(fl!("tooltip-nav-next")),
         );
 
     // Center section: Transformations
@@ -49,24 +49,24 @@ pub fn start<'a>(
         .spacing(4)
         .push(
             button::icon(icon::from_name("object-rotate-left-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::RotateCCW))
+                .on_press_maybe(has_doc.then_some(AppMessage::RotateCCW)),
-                .tooltip(fl!("tooltip-rotate-ccw")),
+            //.tooltip(fl!("tooltip-rotate-ccw")),
         )
         .push(
             button::icon(icon::from_name("object-rotate-right-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::RotateCW))
+                .on_press_maybe(has_doc.then_some(AppMessage::RotateCW)),
-                .tooltip(fl!("tooltip-rotate-cw")),
+            //.tooltip(fl!("tooltip-rotate-cw")),
         )
         .push(horizontal_space().width(Length::Fixed(12.0)))
         .push(
             button::icon(icon::from_name("object-flip-horizontal-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::FlipHorizontal))
+                .on_press_maybe(has_doc.then_some(AppMessage::FlipHorizontal)),
-                .tooltip(fl!("tooltip-flip-horizontal")),
+            //.tooltip(fl!("tooltip-flip-horizontal")),
         )
         .push(
             button::icon(icon::from_name("object-flip-vertical-symbolic"))
-                .on_press_maybe(has_doc.then_some(AppMessage::FlipVertical))
+                .on_press_maybe(has_doc.then_some(AppMessage::FlipVertical)),
-                .tooltip(fl!("tooltip-flip-vertical")),
+            //.tooltip(fl!("tooltip-flip-vertical")),
         );
 
     vec![
@@ -85,7 +85,7 @@ pub fn end<'a>(
         // Info panel toggle
         button::icon(icon::from_name("dialog-information-symbolic"))
             .on_press(AppMessage::ToggleContextPage(ContextPage::Properties))
-            .tooltip(fl!("tooltip-info-panel"))
+            //.tooltip(fl!("tooltip-info-panel"))
             .into(),
     ]
 }