Method AddFontDefaultBitmap

imgui_tiny_app/imgui/imgui_draw.cpp:3147–3168

Load embedded ProggyClean.ttf. Default size 13, disable oversampling. If you want a similar font which may be better scaled, consider using AddFontDefaultVector().

// Load embedded ProggyClean.ttf. Default size 13, disable oversampling.
// If you want a similar font which may be better scaled, consider using AddFontDefaultVector().
ImFont* ImFontAtlas::AddFontDefaultBitmap(const ImFontConfig* font_cfg_template)
{
#ifndef IMGUI_DISABLE_DEFAULT_FONT
    ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
    if (!font_cfg_template)
        font_cfg.PixelSnapH = true; // Prevents sub-integer scaling factors at lower-level layers.
    if (font_cfg.SizePixels <= 0.0f)
        font_cfg.SizePixels = 13.0f; // This only serves (1) as a reference for GlyphOffset.y setting and (2) as a default for pre-1.92 backend.
    if (font_cfg.Name[0] == '\0')
        ImFormatString(font_cfg.Name, IM_COUNTOF(font_cfg.Name), "ProggyClean.ttf");
    font_cfg.EllipsisChar = (ImWchar)0x0085;
    font_cfg.GlyphOffset.y += 1.0f * (font_cfg.SizePixels / 13.0f); // Add +1 offset per 13 units

    int ttf_compressed_size = 0;
    const char* ttf_compressed = GetDefaultCompressedFontDataProggyClean(&ttf_compressed_size);
    return AddFontFromMemoryCompressedTTF(ttf_compressed, ttf_compressed_size, font_cfg.SizePixels, &font_cfg);
#else
    IM_ASSERT(0 && "Function is disabled in this build.");
    IM_UNUSED(font_cfg_template);
    return NULL;
#endif // #ifndef IMGUI_DISABLE_DEFAULT_FONT
}

// Load a minimal version of ProggyForever, designed to match our good old ProggyClean, but nicely scalable.
// (See build script in https://github.com/ocornut/proggyforever for details)