public override Task <IImageSourceServiceResult <Drawable>?> GetDrawableAsync(IImageSource imageSource, Context context, CancellationToken cancellationToken = default)
{
var fontImageSource = (IFontImageSource)imageSource;
if (!fontImageSource.IsEmpty)
{
var size = FontManager.GetFontSize(fontImageSource.Font);
var unit = fontImageSource.Font.AutoScalingEnabled ? ComplexUnitType.Sp : ComplexUnitType.Dip;
var textSize = TypedValue.ApplyDimension(unit, size.Value, context?.Resources?.DisplayMetrics);
var typeface = FontManager.GetTypeface(fontImageSource.Font);
var color = (fontImageSource.Color ?? Graphics.Colors.White).ToPlatform();
try
{
var drawableCallback = new ImageLoaderResultCallback();
PlatformInterop.LoadImageFromFont(
context,
color,
fontImageSource.Glyph,
typeface,
textSize,
drawableCallback);
return(drawableCallback.Result);
}
catch (Exception ex)
{
Logger?.LogWarning(ex, "Unable to generate font image '{Glyph}'.", fontImageSource.Glyph);
throw;
}
}
return(Task.FromResult <IImageSourceServiceResult <Drawable>?>(null));
}
