protected void CreateTextBitmaps(int width, int height)
{
// create a 32bit text bmp that will store the rendered text.
TextBmp = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888);
// create a canvas and place the TextBmp as its target
Android.Graphics.Canvas canvas = new Android.Graphics.Canvas(TextBmp);
// render our text (which will put it into the TextBmp buffer)
base.OnDraw(canvas);
// set the TextPaint's shader to render with the Text we just rendered
TextPaint.SetShader(new BitmapShader(TextBmp, Shader.TileMode.Clamp, Shader.TileMode.Clamp));
}
private static TextPaint InnerBuildPaint(FontWeight fontWeight, FontStyle fontStyle, FontFamily fontFamily, double fontSize, double characterSpacing, Color foreground, Shader shader, BaseLineAlignment baselineAlignment, TextDecorations textDecorations)
{
var paint = new TextPaint(PaintFlags.AntiAlias);
var paintSpecs = BuildPaintValueSpecs(fontSize, characterSpacing);
paint.Density = paintSpecs.density;
paint.TextSize = paintSpecs.textSize;
paint.UnderlineText = (textDecorations & TextDecorations.Underline) == TextDecorations.Underline;
paint.StrikeThruText = (textDecorations & TextDecorations.Strikethrough) == TextDecorations.Strikethrough;
if (shader != null)
{
paint.SetShader(shader);
}
if (baselineAlignment == BaseLineAlignment.Superscript)
{
paint.BaselineShift += (int)(paint.Ascent() / 2);
}
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.Lollipop)
{
paint.LetterSpacing = paintSpecs.letterSpacing;
}
else
{
LogCharacterSpacingNotSupported();
}
var typefaceStyle = TypefaceStyleHelper.GetTypefaceStyle(fontStyle, fontWeight);
var typeface = FontHelper.FontFamilyToTypeFace(fontFamily, fontWeight, typefaceStyle);
paint.SetTypeface(typeface);
paint.Color = foreground;
return(paint);
}
