winrt: Fix orientation update mask

On WP8.0, setting auto rotation preferences at runtime worked like an
orientation update mask, and did not modify the behavior of the window.
With WP8.1, setting auto rotation preferences has the side effect that the
compositor will then resize the window when moving from e.g. portrait to
landscape. Because of this, the auto rotation API should not be called
inside orientationUpdateMask(). The default implementation is now
sufficient, so the platform override is removed.

Developers looking to set auto rotation preferences should use the
application manifest or call the native api directly.

Task-number: QTBUG-35953
Change-Id: I90cf4290ced34df1bb350cb6aa5deff209622865
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>

2 files changed, 5 insertions, 14 deletions

diff --git a/src/plugins/platforms/winrt/qwinrtscreen.cpp b/src/plugins/platforms/winrt/qwinrtscreen.cpp
index c366babebc..ef99e6da6b 100644
--- a/src/plugins/platforms/winrt/qwinrtscreen.cpp
+++ b/src/plugins/platforms/winrt/qwinrtscreen.cpp
@@ -432,7 +432,6 @@ class QWinRTScreenPrivate
 public:
     ComPtr<ICoreApplication> application;
     ComPtr<ICoreWindow> coreWindow;
-    ComPtr<IDisplayInformationStatics> displayInformationStatics;
     ComPtr<IDisplayInformation> displayInformation;
 #ifdef Q_OS_WINPHONE
     ComPtr<IHardwareButtonsStatics> hardwareButtons;
@@ -552,11 +551,12 @@ QWinRTScreen::QWinRTScreen()
 #endif // Q_OS_WINPHONE
 
     // Orientation handling
+    ComPtr<IDisplayInformationStatics> displayInformationStatics;
     hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Graphics_Display_DisplayInformation).Get(),
-                                IID_PPV_ARGS(&d->displayInformationStatics));
+                                IID_PPV_ARGS(&displayInformationStatics));
     Q_ASSERT_SUCCEEDED(hr);
 
-    hr = d->displayInformationStatics->GetForCurrentView(&d->displayInformation);
+    hr = displayInformationStatics->GetForCurrentView(&d->displayInformation);
     Q_ASSERT_SUCCEEDED(hr);
 
     // Set native orientation
@@ -572,9 +572,9 @@ QWinRTScreen::QWinRTScreen()
     Q_ASSERT_SUCCEEDED(hr);
 
     // Set initial orientation & pixel density
-    onOrientationChanged(Q_NULLPTR, Q_NULLPTR);
     onDpiChanged(Q_NULLPTR, Q_NULLPTR);
-    setOrientationUpdateMask(d->nativeOrientation);
+    d->orientation = d->nativeOrientation;
+    onOrientationChanged(Q_NULLPTR, Q_NULLPTR);
 
     d->eglDisplay = eglGetDisplay(d->displayInformation.Get());
     if (d->eglDisplay == EGL_NO_DISPLAY)
@@ -696,14 +696,6 @@ Qt::ScreenOrientation QWinRTScreen::orientation() const
     return d->orientation;
 }
 
-void QWinRTScreen::setOrientationUpdateMask(Qt::ScreenOrientations mask)
-{
-    Q_D(QWinRTScreen);
-
-    HRESULT hr = d->displayInformationStatics->put_AutoRotationPreferences(nativeOrientationsFromQt(mask));
-    RETURN_VOID_IF_FAILED("Failed to set display auto rotation preferences.");
-}
-
 ICoreWindow *QWinRTScreen::coreWindow() const
 {
     Q_D(const QWinRTScreen);
diff --git a/src/plugins/platforms/winrt/qwinrtscreen.h b/src/plugins/platforms/winrt/qwinrtscreen.h
index 21673c9f06..6764450d84 100644
--- a/src/plugins/platforms/winrt/qwinrtscreen.h
+++ b/src/plugins/platforms/winrt/qwinrtscreen.h
@@ -107,7 +107,6 @@ public:
 
     Qt::ScreenOrientation nativeOrientation() const;
     Qt::ScreenOrientation orientation() const;
-    void setOrientationUpdateMask(Qt::ScreenOrientations mask);
 
     QWindow *topWindow() const;
     void addWindow(QWindow *window);