wip: remodularize 2

tui/src/lib.rs

@@ -18,6 +18,7 @@ mod tui_style;  pub use self::tui_style::*;
 mod tui_theme;  pub use self::tui_theme::*;
 mod tui_border; pub use self::tui_border::*;
 mod tui_field;  pub use self::tui_field::*;
+mod tui_buffer; pub use self::tui_buffer::*;
 
 pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicUsize, AtomicBool, Ordering::*}};
 pub(crate) use std::io::{stdout, Stdout};

tui/src/tui_buffer.rs

@@ -0,0 +1,27 @@
+use crate::*;
+
+#[derive(Default)]
+pub struct BigBuffer {
+    pub width:   usize,
+    pub height:  usize,
+    pub content: Vec<Cell>
+}
+
+impl BigBuffer {
+    pub fn new (width: usize, height: usize) -> Self {
+        Self { width, height, content: vec![Cell::default(); width*height] }
+    }
+    pub fn get (&self, x: usize, y: usize) -> Option<&Cell> {
+        let i = self.index_of(x, y);
+        self.content.get(i)
+    }
+    pub fn get_mut (&mut self, x: usize, y: usize) -> Option<&mut Cell> {
+        let i = self.index_of(x, y);
+        self.content.get_mut(i)
+    }
+    pub fn index_of (&self, x: usize, y: usize) -> usize {
+        y * self.width + x
+    }
+}
+
+from!(|size:(usize, usize)| BigBuffer = Self::new(size.0, size.1));