chore: initial commit

src/app/view/mod.rs

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MPL-2.0
+// src/app/view/mod.rs
+//
+// Root layout for the main application window.
+
+pub mod canvas;
+pub mod panels;
+
+use cosmic::Element;
+use cosmic::iced::Length;
+use cosmic::widget::{Column, Container, Row};
+
+use crate::app::{AppMessage, AppModel};
+
+/// Main window layout (header, center row, footer).
+pub fn view(model: &AppModel) -> Element<'_, AppMessage> {
+    let header = panels::header(model);
+    let footer = panels::footer(model);
+    let left_panel = panels::left_panel(model);
+    let right_panel = panels::right_panel(model);
+    let canvas = canvas::view(model);
+
+    // Build middle row step by step to handle optional panels.
+    let mut middle_row = Row::new().spacing(8).height(Length::Fill);
+
+    if let Some(left) = left_panel {
+        middle_row = middle_row.push(left);
+    }
+
+    middle_row = middle_row.push(canvas);
+
+    if let Some(right) = right_panel {
+        middle_row = middle_row.push(right);
+    }
+
+    let content = Column::new()
+        .spacing(8)
+        .padding(8)
+        .width(Length::Fill)
+        .height(Length::Fill)
+        .push(header)
+        .push(middle_row)
+        .push(footer);
+
+    Container::new(content)
+        .width(Length::Fill)
+        .height(Length::Fill)
+        .into()
+}