Improve IsBlurTheme to check blur support directly in the
current theme's resource dictionary, ensuring precise and
context-specific detection. Updated related logic and comments
for clarity.
Added early returns if Application.Current is null in RefreshFrameAsync and SetBlurForWindowAsync to prevent null reference exceptions. Updated dispatcher access checks and ensured the correct method is invoked asynchronously for each case, improving robustness and reliability.
Add try-catch to UpdateResourceDictionary to prevent crashes from InvalidCastException when updating resources. Set _oldResource to null on error. Suppress VSTHRD103 warnings around SetBlurForWindow to clarify intentional async usage and avoid build warnings.
Moved RemoveDropShadowEffectFromCurrentTheme() into specific conditional branches within AutoDropShadow to ensure it is only called when appropriate. Explicitly set window corner preference and drop shadow effect based on theme and blur support, improving appearance consistency and logic clarity.
Refactored RefreshFrameAsync and SetBlurForWindowAsync to check Dispatcher access before invoking UI updates, ensuring thread safety and reducing unnecessary Dispatcher calls. Also removed redundant code and unused using directive.
Refactored caret and background brush assignment to avoid sharing mutable instances and ensure proper resource referencing. Added GetNewCaretValue helper for safe caret brush creation. Brushes for backgrounds are now frozen for performance. Improved foreground value retrieval and dynamic resource key extraction. Made some methods static for clarity and consistency. Enhances resource management and reliability in theme handling.
