Displaying Glyphs' Codepoints as Characters [SOLVED]

[tingspain]

Hello,

I am trying to create a simple window to list all the glyphs and theirs Unicode of a font. But I dont manage to use properly the Codepoint to render the character.

Does anyone know how I can achieve that?

Thanks in advance!

static void ShowGlyphWindow()
{
    unsafe {

        ImGui.Begin("Glyphs List");

        var io = ImGui.GetIO();
        var font = io.Fonts.Fonts[0]; // Access the default font (usually the first one)

        ImGui.Text(Regex.Unescape(font.GetDebugName().ToString()));

        // Iterate through all the glyphs in the default font
        for (int i = 0; i < font.Glyphs.Size; i++)
        {
            var glyph = font.Glyphs[i];
            if( glyph.Codepoint == 0)
                continue;

            // Create a string to display the glyph character and its Unicode codepoint
            var glyphString = new StringBuilder(); 
            string text = $"\\u{glyph.Codepoint:X4}";

            string text2 = $"{glyph.Codepoint:X4}";
            byte[] bytes = Encoding.Default.GetBytes(text2);
            text2 = Encoding.UTF8.GetString(bytes);

            glyphString.Append($"Char: {text}  Unicode: U+{glyph.Codepoint:X4}");

            // Display the glyph string
            ImGui.Text(Regex.Unescape(glyphString.ToString()));

        }

        ImGui.End();
    }
}

[tingspain]

At the end I solved it by using different approach. I dont know if it is the most optimal way, but it works for me. I hope it will be useful for someone else. ^___^

Does anyone have any feedback?

unsafe {

        ImGui.Begin("Glyphs List");

        var io = ImGui.GetIO();
        var font = io.Fonts.Fonts[0];

        string[] icons = ImGuiExt.getIconList();
        List<string> glyphs = new List<string>();

        for (ushort i = '\ue800'; i <= '\uf2db'; i++)
        {
            char unicodeChar = (char)i;

            if(font.FindGlyphNoFallback(unicodeChar).NativePtr == null)
                continue;

            glyphs.Add($"U+{i:X4} - {unicodeChar}");
        }

        ImGui.Text("Font Name: " + Regex.Unescape(font.GetDebugName().ToString()));
        ImGui.Text("Characters: "  + font.Glyphs.Size);
        ImGui.Text("Glyphs: " + glyphs.Count);  

        ImGui.PushStyleVar(ImGuiStyleVar.FramePadding, new System.Numerics.Vector2(10, 10));

        ImGui.BeginChild("scrolling", new System.Numerics.Vector2(0,0) , ImGuiChildFlags.FrameStyle);

        ImGui.Columns(6, null, false);
        foreach (var glyph in glyphs){
            ImGui.Text(glyph);
            ImGui.NextColumn();
        }
        ImGui.Columns(1);

        ImGui.EndChild();

        ImGui.PopStyleVar();

        ImGui.End();
    }