Method DebugNodeFontGlyphsForSrcMask

include/imgui/imgui.cpp:17548–17597

}

void ImGui::DebugNodeFontGlyphsForSrcMask(ImFont* font, ImFontBaked* baked, int src_mask)
{
    ImDrawList* draw_list = GetWindowDrawList();
    const ImU32 glyph_col = GetColorU32(ImGuiCol_Text);
    const float cell_size = baked->Size * 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 & 8191) && font->IsGlyphRangeUnused(base, base + 8191))
        {
            base += 8192 - 256;
            continue;
        }

        int count = 0;
        for (unsigned int n = 0; n < 256; n++)
            if (const ImFontGlyph* glyph = baked->IsGlyphLoaded((ImWchar)(base + n)) ? baked->FindGlyph((ImWchar)(base + n)) : NULL)
                if (src_mask & (1 << glyph->SourceIdx))
                    count++;
        if (count <= 0)
            continue;
        if (!TreeNode((void*)(intptr_t)base, "U+%04X..U+%04X (%d %s)", base, base + 255, count, count > 1 ? "glyphs" : "glyph"))
            continue;

        // Draw a 16x16 grid of glyphs
        ImVec2 base_pos = GetCursorScreenPos();
        for (unsigned int n = 0; n < 256; n++)
        {
            // We use ImFont::RenderChar as a shortcut because we don't have UTF-8 conversion functions
            // available here and thus cannot easily generate a zero-terminated UTF-8 encoded string.
            ImVec2 cell_p1(base_pos.x + (n % 16) * (cell_size + cell_spacing), base_pos.y + (n / 16) * (cell_size + cell_spacing));
            ImVec2 cell_p2(cell_p1.x + cell_size, cell_p1.y + cell_size);
            const ImFontGlyph* glyph = baked->IsGlyphLoaded((ImWchar)(base + n)) ? baked->FindGlyph((ImWchar)(base + n)) : NULL;
            draw_list->AddRect(cell_p1, cell_p2, glyph ? IM_COL32(255, 255, 255, 100) : IM_COL32(255, 255, 255, 50));
            if (!glyph || (src_mask & (1 << glyph->SourceIdx)) == 0)
                continue;
            font->RenderChar(draw_list, cell_size, cell_p1, glyph_col, (ImWchar)(base + n));
            if (IsMouseHoveringRect(cell_p1, cell_p2) && BeginTooltip())
            {
                DebugNodeFontGlyph(font, glyph);
                EndTooltip();
            }
        }
        Dummy(ImVec2((cell_size + cell_spacing) * 16, (cell_size + cell_spacing) * 16));
        TreePop();
    }
}

void ImGui::DebugNodeFontGlyph(ImFont* font, const ImFontGlyph* glyph)
{