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winrt: Fix initialization of input context

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f104e43a72 moved QWinRTInputContext to the
gui thread. However, IInputPane needs to be queried from Xaml itself.
Otherwise it might cause unhandled exceptions.

Change-Id: I43848c796e7ff163e6befa7c58f0ad68445b9865
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
This commit is contained in:
Maurice Kalinowski 2016-09-09 13:55:57 +02:00
parent 6320ca79e9
commit 60da6313cf
1 changed files with 18 additions and 17 deletions
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35
src/plugins/platforms/winrt/qwinrtinputcontext.cpp
View File

@ -86,30 +86,31 @@ QWinRTInputContext::QWinRTInputContext(QWinRTScreen *screen)
{
qCDebug(lcQpaInputMethods) << __FUNCTION__ << screen;
ComPtr<IInputPaneStatics> statics;
if (FAILED(GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_UI_ViewManagement_InputPane).Get(),
&statics))) {
qWarning("failed to retrieve input pane statics.");
return;
}
QEventDispatcherWinRT::runOnXamlThread([this]() {
ComPtr<IInputPaneStatics> statics;
if (FAILED(GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_UI_ViewManagement_InputPane).Get(),
&statics))) {
qWarning("failed to retrieve input pane statics.");
return S_OK;
}
ComPtr<IInputPane> inputPane;
statics->GetForCurrentView(&inputPane);
if (inputPane) {
QEventDispatcherWinRT::runOnXamlThread([this, inputPane]() {
ComPtr<IInputPane> inputPane;
statics->GetForCurrentView(&inputPane);
if (inputPane) {
EventRegistrationToken showToken, hideToken;
inputPane->add_Showing(Callback<InputPaneVisibilityHandler>(
this, &QWinRTInputContext::onShowing).Get(), &showToken);
inputPane->add_Hiding(Callback<InputPaneVisibilityHandler>(
this, &QWinRTInputContext::onHiding).Get(), &hideToken);
return S_OK;
});
m_keyboardRect = getInputPaneRect(inputPane, m_screen->scaleFactor());
m_isInputPanelVisible = !m_keyboardRect.isEmpty();
} else {
qWarning("failed to retrieve InputPane.");
}
m_keyboardRect = getInputPaneRect(inputPane, m_screen->scaleFactor());
m_isInputPanelVisible = !m_keyboardRect.isEmpty();
} else {
qWarning("failed to retrieve InputPane.");
}
return S_OK;
});
connect(QGuiApplication::inputMethod(), &QInputMethod::cursorRectangleChanged,
this, &QWinRTInputContext::updateScreenCursorRect);
}