[WIP] Daemon & CLI

iota-cli/src/layout/fit.rs

@@ -0,0 +1,52 @@
+use ratatui::layout::Rect;
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct RequiredSize {
+    pub width: u16,
+    pub height: u16,
+}
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum FitLevel {
+    Preferred,
+    Compact,
+    Fallback,
+}
+pub fn select_fit_level(area: Rect, preferred: RequiredSize, compact: RequiredSize) -> FitLevel {
+    if area.width >= preferred.width && area.height >= preferred.height {
+        FitLevel::Preferred
+    } else if area.width >= compact.width && area.height >= compact.height {
+        FitLevel::Compact
+    } else {
+        FitLevel::Fallback
+    }
+}
+pub fn centered_rect(area: Rect, maximum: RequiredSize) -> Rect {
+    let width = area.width.min(maximum.width);
+    let height = area.height.min(maximum.height);
+    Rect {
+        x: area.x.saturating_add(area.width.saturating_sub(width) / 2),
+        y: area
+            .y
+            .saturating_add(area.height.saturating_sub(height) / 2),
+        width,
+        height,
+    }
+}
+pub fn reserve_vertical(area: Rect, top: u16, bottom: u16) -> Option<Rect> {
+    let height = area.height.checked_sub(top)?.checked_sub(bottom)?;
+    Some(Rect {
+        x: area.x,
+        y: area.y.checked_add(top)?,
+        width: area.width,
+        height,
+    })
+}
+pub fn inset_checked(area: Rect, horizontal: u16, vertical: u16) -> Option<Rect> {
+    let width = area.width.checked_sub(horizontal.checked_mul(2)?)?;
+    let height = area.height.checked_sub(vertical.checked_mul(2)?)?;
+    Some(Rect {
+        x: area.x.checked_add(horizontal)?,
+        y: area.y.checked_add(vertical)?,
+        width,
+        height,
+    })
+}