helloworldskiasharp.cs

(byte Min, byte Value, byte Max,byte speed, bool Increasing) TextSize;
(byte Min, byte Value , byte Max, byte speed, bool Increasing) Red;
(byte Min, byte Value, byte Max, byte speed, bool Increasing) Green;
(byte Min, byte Value, byte Max, byte speed, bool Increasing) Blue;
Random dice = new Random();
SKPaint textpaint;
private void Init()
{
    TextSize = (10, 128, 200,1, true);
    Red = (0, (byte)dice.Next(0, 128), 200, (byte)dice.Next(0, 5), true);
    Green = (0, (byte)dice.Next(0, 128), 200, (byte)dice.Next(0, 5), true);
    Blue = (0, (byte)dice.Next(0, 128), 200, (byte)dice.Next(0, 5), true);

    textpaint = new SKPaint()
    {
        IsAntialias = true,
        TextAlign = SKTextAlign.Center,
        TextSize = TextSize.Value,
        SubpixelText = true,
        Color = new SKColor(Red.Value, Green.Value, Blue.Value)  
    };
}

private void Update()
{
    Update(ref TextSize);
    Update(ref Red);
    Update(ref Green);
    Update(ref Blue);

    textpaint.TextSize = TextSize.Value;
    textpaint.Color = new SKColor(Red.Value, Green.Value, Blue.Value);
}

private void Update(ref (byte Min, byte Value, byte Max, byte speed, bool Increasing)  range)
{
    if (range.Increasing)
    {
        range.Value+=range.speed;
        if (range.Value > range.Max)
            range.Increasing = false;
    }
    else
    {
        range.Value-= range.speed;
        if (range.Value < range.Min)
            range.Increasing = true;
    }
}

private void Draw(SKCanvas canvas, int width, int height)
{
    canvas.DrawText("SkiaSharp", width / 2f , (height + TextSize.Value) / 2f, textpaint);
}
}