Fix view frame in portrait when starting iOS app in landscape

CHANGELOG.md

@@ -32,6 +32,7 @@
 - **Breaking:** `primary_monitor` now returns `Option<MonitorHandle>`.
 - On macOS, updated core-* dependencies and cocoa.
 - Bump `parking_lot` to 0.11
+- On iOS, fixed starting the app in landscape where the view still had portrait dimensions.
 
 # 0.22.2 (2020-05-16)
 

src/platform_impl/ios/view.rs

@@ -134,6 +134,18 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
                     height: screen_frame.size.height as f64,
                 }
                 .to_physical(scale_factor.into());
+
+                // If the app is started in landscape, the view frame and window bounds can be mismatched.
+                // The view frame will be in portrait and the window bounds in landscape. So apply the
+                // window bounds to the view frame to make it consistent.
+                let view_frame: CGRect = msg_send![object, frame];
+                let window_bounds: CGRect = msg_send![window, bounds];
+                if view_frame.size.width != window_bounds.size.width
+                    || view_frame.size.height != window_bounds.size.height
+                {
+                    let () = msg_send!(object, setFrame: window_bounds);
+                }
+
                 app_state::handle_nonuser_event(EventWrapper::StaticEvent(Event::WindowEvent {
                     window_id: RootWindowId(window.into()),
                     event: WindowEvent::Resized(size),