added: layout structure

diff --git a/src/graphics/layout.rs b/src/graphics/layout.rs
new file mode 100644 (file)
index 0000000..f4d2ae4
--- /dev/null
+++ b/src/graphics/layout.rs
@@ -0,0 +1,51 @@
+use crossterm::terminal;
+use eyre::Result;
+
+use super::*;
+
+pub struct Area {
+    pub origin: Point,
+    pub max: Point,
+}
+
+pub struct Layout {
+    pub screen: Area,
+    pub cells: Area,
+    pub mask: Area,
+    pub channels: Area,
+}
+
+impl Layout {
+    pub fn build() -> Result<Self> {
+        let (col, row) = terminal::size()?;
+        let col: usize = col.into();
+        let row: usize = row.into();
+
+        let screen = Area {
+            origin: Point::new(0, 0),
+            max: Point::new(col, row),
+        };
+
+        let cells = Area {
+            origin: Point::new(1, 1),
+            max: Point::new(col / 2 - 5, row / 2 - 2),
+        };
+
+        let mask = Area {
+            origin: Point::new(col / 2 + 5, 1),
+            max: Point::new(col - 2, row / 2 - 2),
+        };
+
+        let channels = Area {
+            origin: Point::new(1, row / 2 + 2),
+            max: Point::new(col - 2, row - 2),
+        };
+
+        Ok(Self {
+            screen,
+            cells,
+            mask,
+            channels,
+        })
+    }
+}