Label/Button Height about carouselview HOT 21 CLOSED

public interface ITextMeter
{
    double MeasureTextSize(string text, double width, double fontSize, string fontName = null);
}

[assembly: Xamarin.Forms.Dependency(typeof(TextMeterImplementation))]
namespace YourNamespace.iOS
{
    public class TextMeterImplementation : ITextMeter
    {
        //public static Xamarin.Forms.Size MeasureTextSize(string text, double width, double fontSize, string fontName = null)
        public double MeasureTextSize(string text, double width, double fontSize, string fontName = null)
        {
            var nsText = new NSString(text);
            var boundSize = new SizeF((float)width, float.MaxValue);
            var options = NSStringDrawingOptions.UsesFontLeading | NSStringDrawingOptions.UsesLineFragmentOrigin;

            if (fontName == null)
            {
                fontName = "HelveticaNeue";
            }

            var attributes = new UIStringAttributes {
                Font = UIFont.FromName(fontName, (float)fontSize)
            };

            var sizeF = nsText.GetBoundingRect(boundSize, options, attributes, null).Size;

            //return new Xamarin.Forms.Size((double)sizeF.Width, (double)sizeF.Height);
            return (double)sizeF.Height;
        }
    }
}

[assembly: Xamarin.Forms.Dependency(typeof(TextMeterImplementation))]
namespace YourNamespace.Droid
{
    public class TextMeterImplementation : ITextMeter
    {
        private Typeface textTypeface;

        public double MeasureTextSize(string text, double width, double fontSize, string fontName = null) {

            var paint = new TextPaint(PaintFlags.AntiAlias | PaintFlags.SubpixelText);
            paint.TextSize = (float)fontSize;
            paint.SetTypeface(GetTypeface(fontName));

            int lineCount = 0;

            int index = 0;
            int length = text.Length;

            while(index < length - 1) {
                index += paint.BreakText(text, index, length, true, (float)width, null);
                lineCount++;
            }

            var bounds = new Rect();
            paint.GetTextBounds(text, 0, length, bounds);

            return (double)lineCount * bounds.Height() + 3;
        }

        private Typeface GetTypeface(string fontName)
        {
            if (fontName == null)
            {
                return Typeface.Default;
            }

            if (textTypeface == null)
            {
                textTypeface = Typeface.Create(fontName, TypefaceStyle.Normal);
            }

            return textTypeface;
        }
    }
}

var width = Navigation.NavigationStack.First().Width - x;

public float GetDensity()
{
    return global::Android.App.Application.Context.Resources.DisplayMetrics.Density;
}

public double MeasureTextSize(string text, double width, double fontSize, string fontName = null)
{
            var textView = new TextView(global::Android.App.Application.Context);
            textView.Typeface = GetTypeface(fontName);
            textView.SetText(text, TextView.BufferType.Normal);
            textView.SetTextSize(ComplexUnitType.Dip, (float)fontSize);

            int widthMeasureSpec = Android.Views.View.MeasureSpec.MakeMeasureSpec(
                (int)width, MeasureSpecMode.AtMost);
            int heightMeasureSpec = Android.Views.View.MeasureSpec.MakeMeasureSpec(
                0, MeasureSpecMode.Unspecified);

            textView.Measure(widthMeasureSpec, heightMeasureSpec);

            var density = global::Android.App.Application.Context.Resources.DisplayMetrics.Density;

            return ((double)textView.MeasuredHeight / density) + 5;
 }

public float GetDensity()
{
    return global::Android.App.Application.Context.Resources.DisplayMetrics.Density;
}

public double MeasureTextSize(string text, double width, double fontSize, string fontName = null)
{
            var textView = new TextView(global::Android.App.Application.Context);
            textView.Typeface = GetTypeface(fontName);
            textView.SetText(text, TextView.BufferType.Normal);
            textView.SetTextSize(ComplexUnitType.Sp, (float)fontSize);

            int widthMeasureSpec = Android.Views.View.MeasureSpec.MakeMeasureSpec(
                (int)width, MeasureSpecMode.AtMost);
            int heightMeasureSpec = Android.Views.View.MeasureSpec.MakeMeasureSpec(
                0, MeasureSpecMode.Unspecified);

            textView.Measure(widthMeasureSpec, heightMeasureSpec);

            var density = global::Android.App.Application.Context.Resources.DisplayMetrics.Density;

            return ((double)textView.MeasuredHeight / density) + 5;
 }

        private Typeface textTypeface;

        public double MeasureTextSize(string text, double width, double fontSize, string fontName = null)
        {
            var textView = new TextView(global::Android.App.Application.Context);
            textView.Typeface = GetTypeface(fontName);
            textView.SetText(text, TextView.BufferType.Normal);
            textView.SetTextSize(ComplexUnitType.Px, (float)fontSize);

            int widthMeasureSpec = AViews.View.MeasureSpec.MakeMeasureSpec(
                (int)width, AViews.MeasureSpecMode.AtMost);
            int heightMeasureSpec = AViews.View.MeasureSpec.MakeMeasureSpec(
                0, AViews.MeasureSpecMode.Unspecified);

            textView.Measure(widthMeasureSpec, heightMeasureSpec);

            return (double)textView.MeasuredHeight;
        }

        private Typeface GetTypeface(string fontName)
        {
            if (fontName == null)
            {
                return Typeface.Default;
            }

            if (textTypeface == null)
            {
                textTypeface = Typeface.Create(fontName, TypefaceStyle.Normal);
            }

            return textTypeface;
        }

    public class CVLabel : Label
    {
        public CVLabel()
        {
            SetBinding(Label.HeightRequestProperty, new Binding("WidthRequest", BindingMode.Default, new LabelHeightConverter(), this, null, this));
        }

        protected override void OnSizeAllocated(double width, double height)
        {
            base.OnSizeAllocated(width, height);

            WidthRequest = width;

            this.LayoutTo(new Rectangle(this.X, this.Y, width, height));

            this.InvalidateMeasure();
        }
    }