How to customize the page header and the page number of classicthesis?

Question

I am using the classicthesis package and would like to customize the page headers and the page numbers. Here is a test project that shows the problem.

\documentclass[dottedtoc, headinclude, footinclude=true]{scrreprt}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[pdfspacing]{classicthesis}
\usepackage{lipsum,kantlipsum} % Generates dummy text.

\begin{document}
\pagestyle{plain}
\tableofcontents

\pagestyle{scrheadings} % <--- Affects the page header and page number in the footer.

\part{Liechtenstein}
\chapter{Liechtenstein}\kant[1-6]\clearpage

\part{Germany}
\chapter{Germany}\kant[1-3]\clearpage
\section{Bavaria}\kant[1-6]\clearpage
\section{Hesse}\kant[1-6]

\end{document}

When I add \pagestyle{scrheadings} the page number jumps to the header as shown in the screenshot. I want the page numbers to stay at the footer. Nevertheless, I want a page header that shows the current chapter respectively the section. Please compile my example to recognize that some chapters do not have sections. It would be best, when I could manually decide whether the chapter name should be displayed on all pages of the chapter or whether the section names should appear.

This following screenshots show how a page looks like with or without scrheadings enabled.

Desired layout:

• Page number always in the footer.
• Chapter name or section name in the header.
• Total page numbers in the footer. (optional)
• Manual configuration whether chapter or section name is shown in the header. (optional)

Answer 1

1. Redefining scrheadings
The redefinition of scrheading is described in chapter 5 in the KOMAscript-manual.

Add the following three lines to your MWE:

\clearscrheadfoot
\ohead{\rightmark}
\cfoot[\pagemark]{\pagemark}

You manipulate chapteror sectionin the header by changing between \leftmark and \rightmark in the second line, i.e.

\ohead{\rightmark}  % section-names in the header
\ohead{\leftmark}   % chapter-names in the header

If you use the option twoside to the class, you can use the command

\ohead{\headmark}

and have chapter names in the left-side heading and section names in the right-side headings, automagically.

Page number x of y
To have page number as ‘6 of 10’, add the package lastpage and redefine the cfoot to:

\cfoot[\pagemark]{\pagemark{} of \pageref{LastPage}}

NB! If you want the same page numbering in the part- and chapter-sides, add the same commands to the optional argument of \cfoot, i.e.

\cfoot[\pagemark{} of \pageref{LastPage}]% for pagestyle `scrplain`
     {\pagemark{} of \pageref{LastPage}}% for pagestyle `scrheading`

3. Section number in heading
To remove the section (or chapter-) number from the heading, in KOMAscript you use the commands:

 \renewcommand*{\sectionmarkformat}{}

and

 \renewcommand*{\chaptermarkformat}{}

Unfortunately, this does not work in classicthesis (the spaced smallcaps disappear). Instead, you have to use

\renewcommand{\sectionmark[1]{\markright{\spacedlowsmallcaps{#1}}}

4. Complete MWE
Your MWE with all your requirements implemented:

\documentclass[dottedtoc, headinclude, footinclude=true]{scrreprt}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[pdfspacing]{classicthesis}
\usepackage{lastpage,lipsum,kantlipsum} % Generates dummy text.


\pagestyle{scrheadings} % <--- Affects the page header 
                        % and page number in the footer.
\clearscrheadfoot
\ohead{\rightmark}  % comment this line and uncomment the next
                    % to switch to `chapter name` in the heading
%\ohead{\leftmark}  % comment out to 

\cfoot[\pagemark]{\pagemark}
    \cfoot[\pagemark{} of \pageref{LastPage}]% for pagestyle `scrplain`
     {\pagemark{} of \pageref{LastPage}}% for pagestyle `scrheading`

\renewcommand{\sectionmark}[1]{\markright{\spacedlowsmallcaps{#1}}}
% Remove section number from heading

\begin{document}

\tableofcontents


\part{Liechtenstein}
\chapter{Liechtenstein}\kant[1-6]\clearpage

\part{Germany}
\chapter{Germany}\kant[1-3]\clearpage
\section{Bavaria}\kant[1-6]\clearpage
\section{Hesse}\kant[1-6]

\end{document}