launch clips

src/device.rs

@@ -134,6 +134,18 @@ pub trait Render {
     fn render (&self, _b: &mut Buffer, _a: Rect) -> Usually<Rect> {
         Ok(Rect { x: 0, y: 0, width: 0, height: 0 })
     }
+    fn min_width (&self) -> u16 {
+        0
+    }
+    fn max_width (&self) -> u16 {
+        u16::MAX
+    }
+    fn min_height (&self) -> u16 {
+        0
+    }
+    fn max_height (&self) -> u16 {
+        u16::MAX
+    }
 }
 
 impl Render for Box<dyn Device> {