public void SetFont(Xamarin.Forms.Font f)
{
if (!equal(f, _font_xf))
{
_font_xf = f;
_paints.Text.SetTypeface(f.ToTypeface());
_paints.Text.TextSize = (float)f.FontSize;
TextFontMetrics = _paints.Text.GetFontMetrics();
}
}
void UpdateToolbarTextFont(AppCompatTextView textView, Xamarin.Forms.Font customFont, Typeface originalFont)
{
if (customFont != null)
{
textView.Typeface = customFont.ToTypeface();
float tValue = customFont.ToScaledPixel();
textView.SetTextSize(ComplexUnitType.Sp, tValue);
}
else
{
textView.Typeface = originalFont;
}
}
public static Typeface ToExtendedTypeface(this Xamarin.Forms.Font font, Context context)
{
Typeface typeface = null;
//1. Lookup in the cache
var hashKey = font.ToHasmapKey();
typeface = TypefaceCache.SharedCache.RetrieveTypeface(hashKey);
#if DEBUG
if (typeface != null)
{
Console.WriteLine("Typeface for font {0} found in cache", font);
}
#endif
//2. If not found, try custom asset folder
if (typeface == null && !string.IsNullOrEmpty(font.FontFamily))
{
string filename = font.FontFamily;
//if no extension given then assume and add .ttf
if (filename.LastIndexOf(".", System.StringComparison.Ordinal) != filename.Length - 4)
{
filename = string.Format("{0}.ttf", filename);
}
try
{
var path = "fonts/" + filename;
#if DEBUG
Console.WriteLine("Lookking for font file: {0}", path);
#endif
typeface = Typeface.CreateFromAsset(context.Assets, path);
#if DEBUG
Console.WriteLine("Found in assets and cached.");
#endif
#pragma warning disable CS0168 // Variable is declared but never used
}
catch (Exception ex)
{
#if DEBUG
Console.WriteLine("not found in assets. Exception: {0}", ex);
Console.WriteLine("Trying creation from file");
#endif
try
{
typeface = Typeface.CreateFromFile("fonts/" + filename);
#if DEBUG
Console.WriteLine("Found in file and cached.");
#endif
}
catch (Exception ex1)
#pragma warning restore CS0168 // Variable is declared but never used
{
#if DEBUG
Console.WriteLine("not found by file. Exception: {0}", ex1);
Console.WriteLine("Trying creation using Xamarin.Forms implementation");
#endif
}
}
}
//3. If not found, fall back to default Xamarin.Forms implementation to load system font
if (typeface == null)
{
typeface = font.ToTypeface();
}
if (typeface == null)
{
#if DEBUG
Console.WriteLine("Falling back to default typeface");
#endif
typeface = Typeface.Default;
}
//Store in cache
TypefaceCache.SharedCache.StoreTypeface(hashKey, typeface);
return(typeface);
}
