iOS: let QIOSScreen change geometry according to interface rotation

Qt expects the screen to change geometry when the "desktop" rotates.
On iOS, we interpret this as when the root view controller changes
orientation, since after all, this is the surface we place QWindows
on top of.

Change-Id: Ia00e68c8f9f0a65aefcc60518ee544fb260d4595
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/plugins/platforms/ios/qiosviewcontroller.mm b/src/plugins/platforms/ios/qiosviewcontroller.mm
index 3121597dba..fe9e02666f 100644
--- a/src/plugins/platforms/ios/qiosviewcontroller.mm
+++ b/src/plugins/platforms/ios/qiosviewcontroller.mm
@@ -43,6 +43,7 @@
 
 #include <QtGui/QGuiApplication>
 #include <QtGui/QScreen>
+#include "qiosscreen.h"
 
 @implementation QIOSViewController
 
@@ -65,5 +66,16 @@
     return UIInterfaceOrientationMaskAll;
 }
 
+- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
+{
+    Q_UNUSED(fromInterfaceOrientation);
+    Qt::ScreenOrientation orientation = convertToQtOrientation(self.interfaceOrientation);
+    if (orientation == -1)
+        return;
+
+    QIOSScreen *qiosScreen = static_cast<QIOSScreen *>(QGuiApplication::primaryScreen()->handle());
+    qiosScreen->setPrimaryOrientation(orientation);
+}
+
 @end