Windows: respect min/max sizes when creating the window (#2393)

src/dpi.rs

@@ -511,6 +511,29 @@ impl Size {
             Size::Logical(size) => size.to_physical(scale_factor),
         }
     }
+
+    pub fn clamp<S: Into<Size>>(input: S, min: S, max: S, scale_factor: f64) -> Size {
+        let (input, min, max) = (
+            input.into().to_physical::<f64>(scale_factor),
+            min.into().to_physical::<f64>(scale_factor),
+            max.into().to_physical::<f64>(scale_factor),
+        );
+
+        let clamp = |input: f64, min: f64, max: f64| {
+            if input < min {
+                min
+            } else if input > max {
+                max
+            } else {
+                input
+            }
+        };
+
+        let width = clamp(input.width, min.width, max.width);
+        let height = clamp(input.height, min.height, max.height);
+
+        PhysicalSize::new(width, height).into()
+    }
 }
 
 impl<P: Pixel> From<PhysicalSize<P>> for Size {