How to set the custom font

You can add the font path via Elmsharp.Utility.AppendGlobalFontPath.

The parameter path must be a directory in which the fonts to be added are present.

If you use only ElmSharp, you should make get the following code.

using ElmSharp;
using Tizen.Applications;

namespace ElmSharpNewFont
{
    class Program : CoreUIApplication
    {
        protected override void OnCreate()
        {
            var window = new Window("NewFontWindow");
            Utility.AppendGlobalFontPath(Application.Current.DirectoryInfo.Resource);
            var layout = new Box(window)
            {
                WeightX = NamedHint.Expand,
                WeightY = NamedHint.Expand,
                BackgroundColor = Color.Black
            };
            window.AddResizeObject(layout);
            layout.Show();
            var label = new Label(layout)
            {
                AlignmentX = 0.5,
                AlignmentY = 0.5,
                WeightX = NamedHint.Expand,
                WeightY = NamedHint.Expand,
                Text = "안녕하세요.",
                TextStyle = "DEFAULT='font=YiSunShinBold font_size=39'",
            };
            label.Show();
            layout.PackEnd(label);
        }

        static void Main(string[] args)
        {
            var app = new Program();
            app.Run(args);
        }
    }
}

Application.Current.DirectoryInfo.Resource is application's resource directory in which the YiSunShin-Bold.ttf font is located

In the Label.TextStyle, font= part should be font name not font family. YiSunShinBold is the font name and font family is YiSunShin Bold, but you can see that it is written as font name.

Note

The font name is actually postscript name in your TTF or OTF file.

In some cases, a custom font can't be set with postscript name. If your custom font is not applied with postscript name, please try to set font family name

Tip

You can find postscript name and font family name from the font file with fc-query in the font config installed shell.
fc-query -f "%{postscriptname}\n" Font.ttf

fc-query -f "%{family}\n" Font.ttf

Of course, it can also be used with Xamarin.Forms.

using ElmSharp;
using Tizen.Applications;

namespace XamarinFormsNewFont
{
    class Program : global::Xamarin.Forms.Platform.Tizen.FormsApplication
    {
        protected override void OnCreate()
        {
            base.OnCreate();

            Utility.AppendGlobalFontPath(Application.Current.DirectoryInfo.Resource);
            LoadApplication(new App());
        }

        static void Main(string[] args)
        {
            var app = new Program();
            global::Xamarin.Forms.Platform.Tizen.Forms.Init(app);
            Tizen.Wearable.CircularUI.Forms.Renderer.FormsCircularUI.Init();
            app.Run(args);
        }
    }
}

using Xamarin.Forms;

namespace XamarinFormsNewFont
{
    public class App : Application
    {
        public App()
        {
            MainPage = new ContentPage
            {
                Content = new StackLayout
                {
                    VerticalOptions = LayoutOptions.Center,
                    Children = {
                        new Label {
                            HorizontalTextAlignment = TextAlignment.Center,
                            FontFamily = "YiSunShinBold",
                            Text = "Welcome to Xamarin Forms!"
                        }
                    }
                }
            };
        }
    }
}

Similarly, you can call Utility.AppendGlobalFontPath before the Label is used.

Tip

You can find YiSunShin font from here