winrt: Refactor platform plugin for XAML support

By using XAML as the platform compositor, many benefits are possible:
 - Better input context handling for tablets
 - Better multiple window support (including non-fullscreen windows)
 - Support for transparent windows and window opacity
 - Integration with native platform controls
 - Simpler orientation handling on Windows Phone with built-in transitions

This patch applies only the minimal parts to make XAML mode work just as
the raw D3D mode. It does this by:
 - Moving all OpenGL parts into QWinRTEGLContext. This will allow us to
   have non-OpenGL windows later (e.g. Direct2D raster surfaces).
 - Moving more window-specific parts into QWinRTWindow. Each window creates
   a SwapChainPanel which can then be used for ANGLE (or Direct2D) content.
 - Moving non screen-specific parts into QWinRTIntegration.
 - Having QWinRTScreen create the base XAML element Canvas.
 - Running certain calls on the UI thread where necessary.

The following code parts were removed:
 - The UIAutomationCore code in QWinRTInputContext, as this is incompatible
   with XAML automation.
 - The D3D Trim and device blacklist, as these have been fixed in ANGLE.
 - Core dispatcher processing in QEventDispatcherWinRT. Now there is only
   one native event dispatcher; it is always running and never needs to be
   pumped.

Future commits should address:
 - Maintaining the window stack list and visibility using the XAML Canvas.
 - Allowing for windows (e.g. popups) to be sized and positioned instead
   of fullscreen.
 - Using the XAML automation API to improve the platform input context.

[ChangeLog][QPA][winrt] Windows Store apps are now composited inside a
XAML container, allowing for tighter integration with the native UI layer.

Change-Id: I285c6dea657c5dab2fda2b1bd8e8e5dd15882c72
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>

1 files changed, 1 insertions, 28 deletions

diff --git a/src/plugins/platforms/winrt/qwinrtinputcontext.h b/src/plugins/platforms/winrt/qwinrtinputcontext.h
index ce7fbabf49..cc3bce435f 100644
--- a/src/plugins/platforms/winrt/qwinrtinputcontext.h
+++ b/src/plugins/platforms/winrt/qwinrtinputcontext.h
@@ -41,9 +41,6 @@
 #include <QtCore/QRectF>
 
 #include <wrl.h>
-#ifndef Q_OS_WINPHONE
-#  include <UIAutomationCore.h>
-#endif
 
 namespace ABI {
     namespace Windows {
@@ -63,11 +60,6 @@ QT_BEGIN_NAMESPACE
 
 class QWinRTScreen;
 class QWinRTInputContext : public QPlatformInputContext
-#ifndef Q_OS_WINPHONE
-                         , public Microsoft::WRL::RuntimeClass<
-                           Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::WinRtClassicComMix>,
-                           IRawElementProviderSimple, ITextProvider, IValueProvider>
-#endif // !Q_OS_WINPHONE
 {
 public:
     explicit QWinRTInputContext(QWinRTScreen *);
@@ -79,26 +71,7 @@ public:
 #ifdef Q_OS_WINPHONE
     void showInputPanel();
     void hideInputPanel();
-#else // Q_OS_WINPHONE
-    // IRawElementProviderSimple
-    HRESULT __stdcall get_ProviderOptions(ProviderOptions *retVal);
-    HRESULT __stdcall GetPatternProvider(PATTERNID, IUnknown **);
-    HRESULT __stdcall GetPropertyValue(PROPERTYID idProp, VARIANT *retVal);
-    HRESULT __stdcall get_HostRawElementProvider(IRawElementProviderSimple **retVal);
-
-    // ITextProvider
-    HRESULT __stdcall GetSelection(SAFEARRAY **);
-    HRESULT __stdcall GetVisibleRanges(SAFEARRAY **);
-    HRESULT __stdcall RangeFromChild(IRawElementProviderSimple *,ITextRangeProvider **);
-    HRESULT __stdcall RangeFromPoint(UiaPoint, ITextRangeProvider **);
-    HRESULT __stdcall get_DocumentRange(ITextRangeProvider **);
-    HRESULT __stdcall get_SupportedTextSelection(SupportedTextSelection *);
-
-    // IValueProvider
-    HRESULT __stdcall SetValue(LPCWSTR);
-    HRESULT __stdcall get_Value(BSTR *);
-    HRESULT __stdcall get_IsReadOnly(BOOL *);
-#endif // !Q_OS_WINPHONE
+#endif
 
 private:
     HRESULT onShowing(ABI::Windows::UI::ViewManagement::IInputPane *,