Fixing box with corner radius doesn't have shadow#15613
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Description
The
boxShadowstyle property does not render whenborderRadiusis also set on a View. Only one attribute works at a time - the shadow is ignored if both are presentType of Change
Why
In composition, when a geometric clip is applied to a visual for
borderRadius, the clip affects both the visual content AND itsDropShadowSince shadows extend outside the visual bounds, the shadow gets clipped and becomes invisible.What
CompositionSwitcher.idl: Added Mask() and SourcePolicy() methods to IDropShadow interface
CompositionContextHelper.cpp: Implemented Mask() and SourcePolicy() in CompDropShadow, added CompositionDropShadowSourcePolicy type mappings
CompositionViewComponentView.cpp: Updated applyShadowProps() to conditionally use the mask approach when borderRadius is present
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After
Testing
If you added tests that prove your changes are effective or that your feature works, add a few sentences here detailing the added test scenarios.
Changelog
Should this change be included in the release notes: yes
Fixed issue where box with corner radius doesn't have shadow
Microsoft Reviewers: Open in CodeFlow
Microsoft Reviewers: Open in CodeFlow