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feat: ThemeShadow support on iOS/macOS
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using System; | ||
using Windows.UI.Xaml; | ||
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namespace Uno.UI.Xaml.Media | ||
{ | ||
internal static partial class ThemeShadowManager | ||
{ | ||
static partial void UnsetShadow(UIElement uiElement) | ||
{ | ||
var translation = uiElement.Translation; | ||
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#if __MACOS__ | ||
if (uiElement is AppKit.NSView view) | ||
#else | ||
if (uiElement is UIKit.UIView view) | ||
#endif | ||
{ | ||
view.Layer.ShadowOpacity = 0; | ||
} | ||
} | ||
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static partial void SetShadow(UIElement uiElement) | ||
{ | ||
var translation = uiElement.Translation; | ||
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#if __MACOS__ | ||
if (uiElement is AppKit.NSView view) | ||
#else | ||
if (uiElement is UIKit.UIView view) | ||
#endif | ||
{ | ||
// Values for 1dp elevation according to https://material.io/guidelines/resources/shadows.html#shadows-illustrator | ||
const float x = 0.25f; | ||
const float y = 0.92f * 0.5f; // Looks more accurate than the recommended 0.92f. | ||
const float blur = 0.5f; | ||
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#if __MACOS__ | ||
view.WantsLayer = true; | ||
view.Shadow ??= new AppKit.NSShadow(); | ||
#endif | ||
view.Layer.MasksToBounds = false; | ||
view.Layer.ShadowOpacity = 1; | ||
#if __MACOS__ | ||
view.Layer.ShadowColor = AppKit.NSColor.Black.CGColor; | ||
#else | ||
view.Layer.ShadowColor = UIKit.UIColor.Black.CGColor; | ||
#endif | ||
view.Layer.ShadowRadius = (nfloat)(blur * translation.Z); | ||
view.Layer.ShadowOffset = new CoreGraphics.CGSize(x * translation.Z, y * translation.Z); | ||
//view.Layer.ShadowPath = path; - needed for rounded corners? | ||
} | ||
} | ||
} | ||
} |