void Update()
{
if (View == null || Build.VERSION.SdkInt < BuildVersionCodes.Lollipop)
{
return;
}
var radius = (float)ShadowEffect.GetRadius(Element);
if (radius < 0)
{
radius = defaultRadius;
}
var opacity = ShadowEffect.GetOpacity(Element);
if (opacity < 0)
{
opacity = defaultOpacity;
}
var androidColor = ShadowEffect.GetColor(Element).MultiplyAlpha(opacity).ToAndroid();
var offsetX = (float)ShadowEffect.GetOffsetX(Element);
var offsetY = (float)ShadowEffect.GetOffsetY(Element);
var cornerRadius = Element is IBorderElement borderElement ? borderElement.CornerRadius : 0;
if (View is AButton button)
{
button.StateListAnimator = null;
}
else if (View is not AButton && View is ATextView textView)
{
textView.SetShadowLayer(radius, offsetX, offsetY, androidColor);
return;
}
var pixelOffsetX = View.Context.ToPixels(offsetX);
var pixelOffsetY = View.Context.ToPixels(offsetY);
var pixelCornerRadius = View.Context.ToPixels(cornerRadius);
View.OutlineProvider = new ShadowOutlineProvider(pixelOffsetX, pixelOffsetY, pixelCornerRadius);
View.Elevation = View.Context.ToPixels(radius);
if (View.Parent is ViewGroup group)
{
group.SetClipToPadding(false);
}
#pragma warning disable
if (Build.VERSION.SdkInt < BuildVersionCodes.P)
{
return;
}
View.SetOutlineAmbientShadowColor(androidColor);
View.SetOutlineSpotShadowColor(androidColor);
#pragma warning restore
}
protected override void OnAttached()
{
try {
Control.Layer.CornerRadius = (nfloat)ShadowEffect.GetRadius(Element);
Control.Layer.ShadowColor = ShadowEffect.GetColor(Element).ToCGColor();
Control.Layer.ShadowOffset = new CGSize((double)ShadowEffect.GetDistanceX(Element), (double)ShadowEffect.GetDistanceY(Element));
Control.Layer.ShadowOpacity = 1.0f;
} catch (Exception ex) {
Console.WriteLine("Cannot set property on attached control. Error: ", ex.Message);
}
}
protected override void OnAttached()
{
try {
var control = Control as Android.Widget.TextView;
float radius = (float)ShadowEffect.GetRadius(Element);
float distanceX = (float)ShadowEffect.GetDistanceX(Element);
float distanceY = (float)ShadowEffect.GetDistanceY(Element);
Android.Graphics.Color color = ShadowEffect.GetColor(Element).ToAndroid();
control.SetShadowLayer(radius, distanceX, distanceY, color);
} catch (Exception ex) {
Console.WriteLine("Cannot set property on attached control. Error: ", ex.Message);
}
}
void Update()
{
if (View == null || Build.VERSION.SdkInt < BuildVersionCodes.Lollipop)
{
return;
}
var radius = (float)ShadowEffect.GetRadius(Element);
if (radius < 0)
{
radius = defaultRadius;
}
var opacity = ShadowEffect.GetOpacity(Element);
if (opacity < 0)
{
opacity = defaultOpacity;
}
var androidColor = ShadowEffect.GetColor(Element).MultiplyAlpha(opacity).ToAndroid();
if (View is TextView textView)
{
var offsetX = (float)ShadowEffect.GetOffsetX(Element);
var offsetY = (float)ShadowEffect.GetOffsetY(Element);
textView.SetShadowLayer(radius, offsetX, offsetY, androidColor);
return;
}
View.OutlineProvider = (Element as VisualElement)?.BackgroundColor.A > 0
? ViewOutlineProvider.PaddedBounds
: ViewOutlineProvider.Bounds;
View.Elevation = View.Context.ToPixels(radius);
if (Build.VERSION.SdkInt < BuildVersionCodes.P)
{
return;
}
View.SetOutlineAmbientShadowColor(androidColor);
View.SetOutlineSpotShadowColor(androidColor);
}
void UpdateShadow()
{
if (shadow == null)
{
return;
}
var radius = (float)ShadowEffect.GetRadius(Element);
var opacity = (float)ShadowEffect.GetOpacity(Element);
var color = ShadowEffect.GetColor(Element).ToWindowsColor();
var offsetX = (float)ShadowEffect.GetOffsetX(Element);
var offsetY = (float)ShadowEffect.GetOffsetY(Element);
shadow.Color = color;
shadow.BlurRadius = radius < 0 ? defaultRadius : radius;
shadow.Opacity = opacity < 0 ? defaultOpacity : opacity;
shadow.Offset = new Vector3(offsetX, offsetY, 0);
UpdateShadowMask();
}
protected override void OnAttached()
{
try {
if (!shadowAdded)
{
var textBlock = Control as Windows.UI.Xaml.Controls.TextBlock;
var shadowLabel = new Label();
shadowLabel.Text = textBlock.Text;
shadowLabel.FontAttributes = FontAttributes.Bold;
shadowLabel.HorizontalOptions = LayoutOptions.Center;
shadowLabel.VerticalOptions = LayoutOptions.CenterAndExpand;
shadowLabel.TextColor = ShadowEffect.GetColor(Element);
shadowLabel.TranslationX = ShadowEffect.GetDistanceX(Element);
shadowLabel.TranslationY = ShadowEffect.GetDistanceY(Element);
((Grid)Element.Parent).Children.Insert(0, shadowLabel);
shadowAdded = true;
}
} catch (Exception ex) {
Debug.WriteLine("Cannot set property on attached control. Error: ", ex.Message);
}
}
void UpdateColor()
{
Control.Layer.ShadowColor = ShadowEffect.GetColor(Element).ToCGColor();
}
void UpdateColor()
{
color = ShadowEffect.GetColor(Element).ToAndroid();
}
private string GetColor()
{
var c = ShadowEffect.GetColor(Element).ToNative();
return(string.Format("#{0:X2}{1:X2}{2:X2}{3:X2}", c.R, c.G, c.B, c.A));
}
void UpdateColor()
{
shadowLabel.TextColor = ShadowEffect.GetColor(Element);
}
