var tmp = utils.CreateTextLayout("some long string", "font_name", font_size_px);
var height_px = tmp.CalcTextHeight(max_width);
tmp.Dispose()

var gp = tmp_img.GetGraphics();
ctab[i].total_lines = gp.EstimateLineWrap(ctab[i].text, g_font, ww - (H_PADDING * 2) - padx).toArray().length;

STDMETHODIMP Utils::CreateTextLayout(BSTR text, BSTR font_name, float font_size, UINT32 font_weight, UINT32 font_style, UINT32 font_stretch, UINT32 text_alignment, UINT32 paragraph_alignment, UINT32 word_wrapping, ITextLayout** out)
{
	RETURN_HR_IF_NULL(E_POINTER, out);

	const std::wstring name_checked = FontHelper::get().get_name_checked(font_name);
	wil::com_ptr_t<IDWriteTextFormat> text_format;
	wil::com_ptr_t<IDWriteTextLayout> text_layout;

	RETURN_IF_FAILED(g_dwrite_factory->CreateTextFormat(name_checked.data(), nullptr, static_cast<DWRITE_FONT_WEIGHT>(font_weight), static_cast<DWRITE_FONT_STYLE>(font_style), static_cast<DWRITE_FONT_STRETCH>(font_stretch), font_size, L"", &text_format));
	RETURN_IF_FAILED(g_dwrite_factory->CreateTextLayout(text, SysStringLen(text), text_format.get(), 512.f, FLT_MAX, &text_layout));
	RETURN_IF_FAILED(JSGraphics::apply_alignment(text_layout.get(), text_alignment, paragraph_alignment, word_wrapping));

	*out = new ComObjectImpl<TextLayout>(text_layout);
	return S_OK;
}

STDMETHODIMP TextLayout::CalcTextHeight(float max_width, float* out)
{
	RETURN_HR_IF_NULL(E_POINTER, out);
	RETURN_HR_IF(E_POINTER, !m_text_layout);

	DWRITE_TEXT_METRICS metrics{};
	RETURN_IF_FAILED(m_text_layout->SetMaxWidth(max_width));
	RETURN_IF_FAILED(m_text_layout->GetMetrics(&metrics));
	*out = metrics.height;
	return S_OK;
}

var layout = utils.CreateTextLayout("", 'Segoe UI', 24);

function on_paint(gr) {
	gr.WriteTextLayout(layout, g_backcolour, 0, 0, ww, wh, 0);
	// LINE_HEIGHT ??
	gr.FillRectangle(0, Math.floor(posy), ww, (tab[i].total_lines*LINE_HEIGHT), g_ovbg_highlightcolour);
	gr.WriteText(tab[i].text, g_font, text_colour, H_PADDING, Math.floor(posy)-1, ww-H_PADDING*2, (tab[i].total_lines*LINE_HEIGHT), g_txt_align, 2, 0, 0);
}

Do it have a equivalent for V3?

No more. You've made the ignore list.

Thanks - https://github.com/marc2k3/jscript-panel/commit/5d5abc08e3321069511c467a8142ef6dd2645c93

Change the value of SMOOTH.RATING.FONT to 1.

I've compromised a bit with a font size of 16. 14 was too small for me.

I managed to break* last.fm charts with that last list.js update so I've just fixed that. Link remains the same,

*the text showed but not the bar charts which I completely missed.