Xaml UI Hosting #15223
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| { | ||
| "type": "prerelease", | ||
| "comment": "Introduce xamlhost component", | ||
| "packageName": "react-native-windows", | ||
| "email": "[email protected]", | ||
| "dependentChangeType": "patch" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| <Application | ||
| x:Class="Microsoft.ReactNative.Xaml.XamlApplication" | ||
| xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> | ||
| </Application> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -8,6 +8,7 @@ | |
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| #include <Fabric/FabricUIManagerModule.h> | ||
| #include <winrt/Microsoft.UI.Input.h> | ||
| #include "CompositionDynamicAutomationProvider.h" | ||
| #include "CompositionRootAutomationProvider.h" | ||
| #include "ReactNativeIsland.h" | ||
| #include "Theme.h" | ||
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@@ -275,7 +276,7 @@ facebook::react::Point RootComponentView::getClientOffset() const noexcept { | |
| return {}; | ||
| } | ||
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| winrt::IUnknown RootComponentView::UiaProviderFromPoint(const POINT &ptPixels, const POINT &ptScreen) noexcept { | ||
| facebook::react::Point ptDips{ | ||
| static_cast<facebook::react::Float>(ptPixels.x) / m_layoutMetrics.pointScaleFactor, | ||
| static_cast<facebook::react::Float>(ptPixels.y) / m_layoutMetrics.pointScaleFactor}; | ||
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@@ -295,7 +296,41 @@ winrt::IInspectable RootComponentView::UiaProviderFromPoint(const POINT &ptPixel | |
| if (view == nullptr) | ||
| return nullptr; | ||
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| auto uiaProvider = | ||
| winrt::get_self<winrt::Microsoft::ReactNative::implementation::ComponentView>(view)->EnsureUiaProvider(); | ||
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| // TODO: Avoid exposing CompositionDynamicAutomationProvider in RootComponentView | ||
|
Contributor
There was a problem hiding this comment. Please file a follow-up task for this and paste its link here.
Contributor
Author
There was a problem hiding this comment. #15317 - I already created a task and adding pending sub tasks to it. Will add this here. |
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| auto dynamicProvider = | ||
| uiaProvider.try_as<winrt::Microsoft::ReactNative::implementation::CompositionDynamicAutomationProvider>(); | ||
| if (dynamicProvider) { | ||
| if (auto childProvider = dynamicProvider->TryGetChildSiteLinkAutomationProvider()) { | ||
| // ChildProvider is the the automation provider from the ChildSiteLink. In the case of WinUI, this | ||
| // is a pointer to WinUI's internal CUIAHostWindow object. | ||
| // It seems odd, but even though this node doesn't behave as a fragment root in our case (the real fragment root | ||
| // is the RootComponentView's UIA provider), we still use its IRawElementProviderFragmentRoot -- just so | ||
| // we can do the ElementProviderFromPoint call. (this was recommended by the team who did the initial | ||
| // architecture work). | ||
| if (auto fragmentRoot = childProvider.try_as<IRawElementProviderFragmentRoot>()) { | ||
| com_ptr<IRawElementProviderFragment> frag; | ||
| // WinUI then does its own hitTest inside the XAML tree. | ||
| fragmentRoot->ElementProviderFromPoint( | ||
| ptScreen | ||
| .x, // Note since we're going through IRawElementProviderFragment the coordinates are in screen space. | ||
| ptScreen.y, | ||
| frag.put()); | ||
| // We return the specific child provider(frag) when hosted XAML has an element | ||
| // under the cursor. This satisfies the UIA "element at point" contract and exposes | ||
| // the control’s patterns/properties. If the hosted tree finds nothing, we fall back | ||
| // to the RNW container’s provider (uiaProvider) to keep the island accessible. | ||
| // (A Microsoft_UI_Xaml!CUIAWrapper object) | ||
| if (frag) { | ||
| return frag.as<winrt::IUnknown>(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return uiaProvider; | ||
| } | ||
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| float RootComponentView::FontSizeMultiplier() const noexcept { | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
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| #include "DocString.h" | ||
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| namespace Microsoft.ReactNative.Xaml { | ||
| [webhosthidden] | ||
| interface IXamlControl { | ||
| DOC_STRING( | ||
| "Native components that want to be Xaml-based can implement IXamlControl to allow their object to be parented to a XamlHost.") | ||
| Microsoft.UI.Xaml.UIElement GetXamlElement(); | ||
| }; | ||
| } // namespace Microsoft.ReactNative. Xaml |
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