Method DebugNodeFont

KBotExt/imgui/imgui.cpp:14292–14380

[DEBUG] Display details for a single font, called by ShowStyleEditor().

// [DEBUG] Display details for a single font, called by ShowStyleEditor().
void ImGui::DebugNodeFont(ImFont* font)
{
	bool opened = TreeNode(font, "Font: \"%s\"\n%.2f px, %d glyphs, %d file(s)",
		font->ConfigData ? font->ConfigData[0].Name : "", font->FontSize, font->Glyphs.Size, font->ConfigDataCount);
	SameLine();
	if (SmallButton("Set as default"))
		GetIO().FontDefault = font;
	if (!opened)
		return;

	// Display preview text
	PushFont(font);
	Text("The quick brown fox jumps over the lazy dog");
	PopFont();

	// Display details
	SetNextItemWidth(GetFontSize() * 8);
	DragFloat("Font scale", &font->Scale, 0.005f, 0.3f, 2.0f, "%.1f");
	SameLine(); MetricsHelpMarker(
		"Note than the default embedded font is NOT meant to be scaled.\n\n"
		"Font are currently rendered into bitmaps at a given size at the time of building the atlas. "
		"You may oversample them to get some flexibility with scaling. "
		"You can also render at multiple sizes and select which one to use at runtime.\n\n"
		"(Glimmer of hope: the atlas system will be rewritten in the future to make scaling more flexible.)");
	Text("Ascent: %f, Descent: %f, Height: %f", font->Ascent, font->Descent, font->Ascent - font->Descent);
	char c_str[5];
	Text("Fallback character: '%s' (U+%04X)", ImTextCharToUtf8(c_str, font->FallbackChar), font->FallbackChar);
	Text("Ellipsis character: '%s' (U+%04X)", ImTextCharToUtf8(c_str, font->EllipsisChar), font->EllipsisChar);
	const int surface_sqrt = (int)ImSqrt((float)font->MetricsTotalSurface);
	Text("Texture Area: about %d px ~%dx%d px", font->MetricsTotalSurface, surface_sqrt, surface_sqrt);
	for (int config_i = 0; config_i < font->ConfigDataCount; config_i++)
		if (font->ConfigData)
			if (const ImFontConfig* cfg = &font->ConfigData[config_i])
				BulletText("Input %d: \'%s\', Oversample: (%d,%d), PixelSnapH: %d, Offset: (%.1f,%.1f)",
					config_i, cfg->Name, cfg->OversampleH, cfg->OversampleV, cfg->PixelSnapH, cfg->GlyphOffset.x, cfg->GlyphOffset.y);

	// Display all glyphs of the fonts in separate pages of 256 characters
	if (TreeNode("Glyphs", "Glyphs (%d)", font->Glyphs.Size))
	{
		ImDrawList* draw_list = GetWindowDrawList();
		const ImU32 glyph_col = GetColorU32(ImGuiCol_Text);
		const float cell_size = font->FontSize * 1;
		const float cell_spacing = GetStyle().ItemSpacing.y;
		for (unsigned int base = 0; base <= IM_UNICODE_CODEPOINT_MAX; base += 256)
		{
			// Skip ahead if a large bunch of glyphs are not present in the font (test in chunks of 4k)
			// This is only a small optimization to reduce the number of iterations when IM_UNICODE_MAX_CODEPOINT
			// is large // (if ImWchar==ImWchar32 we will do at least about 272 queries here)
			if (!(base & 4095) && font->IsGlyphRangeUnused(base, base + 4095))
			{
				base += 4096 - 256;
				continue;
			}

			int count = 0;
			for (unsigned int n = 0; n < 256; n++)
				if (font->FindGlyphNoFallback((ImWchar)(base + n)))
					count++;