Method draw

source/MRViewer/MRImGuiMeasurementIndicators.cpp:241–307

}

Text::DrawResult Text::draw( ImDrawList& list, ImVec2 pos, const TextColor& defaultTextColor ) const
{
    DrawResult ret;

    update();

    ImU32 defaultColorFixed = defaultTextColor.color ? *defaultTextColor.color : ImGui::ColorConvertFloat4ToU32( ImGui::GetStyleColorVec4( ImGuiCol_Text ) );
    ImU32 curColor = defaultColorFixed;

    // Specifically for the full text size, we don't do `max( size, computedSize )`, as it makes more sense this way.
    // See the comment on `size` in the class.
    ImVec2 curPos = pos + ( size - computedSize ) * align;
    ret.cornerA = curPos;
    ret.cornerB = curPos + computedSize;

    FontAndSize curFont = defaultFont;

    for ( const Line& line : lines )
    {
        ImVec2 linePos = curPos + ( line.computedSizeWithPadding - line.computedSize ) * line.align;
        curPos.y += line.computedSizeWithPadding.y;

        for ( const Elem& elem : line.elems )
        {
            ImVec2 elemPos = linePos + ( elem.computedSizeWithPadding - elem.computedSize ) * elem.align;
            linePos.x += elem.computedSizeWithPadding.x;

            std::visit( overloaded{
                [&]( const std::string& str )
                {
                    if ( curFont.first )
                        ImGui::PushFont( curFont.first, curFont.second );
                    MR_FINALLY{
                        if ( curFont.first )
                            ImGui::PopFont();
                    };

                    list.AddText( elemPos, curColor, str.c_str() );
                },
                [&]( TextIcon icon )
                {
                    switch ( icon )
                    {
                    case TextIcon::diameter:
                        list.AddCircle( elemPos + elem.computedSize / 2, elem.computedSize.x / 2 - 2 * UI::scale(), curColor, 0, 1.1f * UI::scale() );
                        list.AddLine(
                            elemPos + ImVec2( elem.computedSize.x - 1.5f, 0.5f ) - ImVec2( 0.5f, 0.5f ),
                            elemPos + ImVec2( 1.5f, elem.computedSize.y - 0.5f ) - ImVec2( 0.5f, 0.5f ),
                            curColor, 1.1f * UI::scale()
                        );
                        break;
                    }
                },
                [&]( const TextColor& color )
                {
                    curColor = color.color ? *color.color : defaultColorFixed;
                },
                [&]( const TextFont& font )