WIP/Experiments in making transparent shadow rendering more robust #4490
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Previously, shadow size was fixed at 1x1. This change introduces ShadowWidth and ShadowHeight properties to both Margin and View, allowing variable shadow dimensions. The Margin class now manages its own shadow sizing, enforcing valid values based on ShadowStyle (e.g., Opaque and Transparent require a minimum of 1, and Opaque only allows 1). Margin.Thickness is dynamically adjusted to account for shadow size, with original values preserved and restored as needed. ShadowView rendering is updated to correctly handle wide graphemes (such as emojis) in the shadow area, preventing rendering errors. The View class exposes ShadowWidth and ShadowHeight, synchronizing with Margin. Extensive new unit tests verify correct behavior for shadow sizing, style changes, thickness adjustments, and rendering, including edge cases and visual output. Additional minor bug fixes and refactoring are included, such as proper management of Margin's cached clip region and correcting a loop order bug in ShadowView. The codebase is also modernized with recent C# features.
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## v2_develop #4490 +/- ##
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- Coverage 77.45% 66.28% -11.18%
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Files 386 386
Lines 44678 44801 +123
Branches 6283 6305 +22
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- Hits 34605 29695 -4910
- Misses 8220 13119 +4899
- Partials 1853 1987 +134
... and 163 files with indirect coverage changes Continue to review full report in Codecov by Sentry.
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This was referenced Dec 14, 2025
Introduce AdornmentsEditor and ViewportSettingsEditor with custom border styles and positioning, enhancing UI editing capabilities. Also update arrangeableViewAtEven to use Color.Black and Color.Green, and adjust a commented border style from Dashed to Dotted.
Enhance ShadowStyles with a second shadow window (transparent style) and a button event handler that shows a message box. In WideGlyphs, add AdornmentsEditor and ViewportSettingsEditor for view property editing, apply custom color schemes to arrangeable views, and update superView with a transparent shadow and increased shadow width. These changes improve interactivity and visualization in the demo scenarios.
Enhance ShadowStyles with a second shadow window (transparent style) and a button event handler that shows a message box. In WideGlyphs, add AdornmentsEditor and ViewportSettingsEditor for view property editing, apply custom color schemes to arrangeable views, and update superView with a transparent shadow and increased shadow width. These changes improve interactivity and visualization in the demo scenarios.
Adds Glyphs.ReplacementChar as a configurable replacement character, replacing all uses of Rune.ReplacementChar. The default is now a space (' ') and can be set via config.json. Updates all rendering, string decoding, and buffer invalidation logic to use the new property, ensuring consistency and themeability. Updates tests and comments accordingly. Also includes minor UI tweaks in WideGlyphs.cs and .DotSettings updates.
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This is a tweak on
that is intended to
a) Take the best from that PR and ensure it gets used going forward
b) Identify and fix the issue seen here:
Potentially related:
ShadowView.GetAttributeUnderLocationneeds a better color mapping algo #4491