如何修改回忆录中的章节样式

Question

我正在使用回忆录课我已经对章节进行了样式设置，如代码和屏幕截图 1 所示。

但是，对于一些标题较长的章节，我希望 tikz 框的颜色和间距有所不同，并使标题文本在换行时正确对齐。

不过，对于较长的标题，我似乎无法覆盖默认章节样式 - 我想使用名为 chapterLongerTitle 的 \newcommand（参见屏幕截图 2 和 \chapterLongerTitle 的代码）。我在 stackexchange 上查看了与此主题相关的多个问题，但无果。有人能帮忙吗？

\usepackage{calc, xcolor, tikz}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% MY DEFAULT CHAPTER STYLING
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newif\ifNoChapNumber

\makeatletter\setlength\midchapskip{0pt}\makechapterstyle{myStyle}
{
    \renewcommand\chapternamenum{}      % erase default style
    \renewcommand\printchaptername{}    % erase default style
    \renewcommand\printchapternum{}     % erase default style
    \renewcommand\chapnumfont{\Large\sffamily}
    \renewcommand\chaptitlefont{\huge\bfseries\sffamily}
    
    \renewcommand\printchaptertitle[1]{%
        \begin{tikzpicture}[scale=1.7]
            \fill[red] (0,0) rectangle (0.5,0.5);  
            \fill[red] (0,1.5) rectangle (0.5,1);  
            \fill[red] (1,-0.5) rectangle (0.5,0);    
            \fill[red] (1,2) rectangle (0.5,1.5);    
        \end{tikzpicture}
        
        \ifNoChapNumber{ % if there is no chapter number
            \vspace*{-6.4em}\hspace*{3.4em}%
            \chaptitlefont\textcolor{purple}{##1} % chapter title
            \vspace*{2em}
        }
        \else{ % else, if there is a chapter number
            \vspace*{-9em}\hspace*{3.2em}%
            \chapnumfont\textcolor{red}{Chapter \thechapter} % chapter number
            
            \vspace*{0.5em}\hspace*{2.3em}%
            \chaptitlefont\textcolor{purple}{ ##1} % chapter title
            \vspace*{2em}
        }
        \fi
        \NoChapNumberfalse
    }
    \renewcommand\printchapternonum{\NoChapNumbertrue}
}
\makeatother
\chapterstyle{myStyle}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% STYLING FOR LONGER CHAPTER TITLE
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\makeatletter
\let\chaptercopy\chapter % \let creates a backup of the original \chapter definition as \chaptercopy in this case
\newcommand\chapterLongerTitle[1]{\chaptercopy{#1}}{%
    \renewcommand\printchaptertitle[1]{%
        \begin{tikzpicture}[scale=1.7]
            \fill[yellow] (0,0) rectangle (0.5,0.5);  % bottom yellow square
            \fill[yellow] (0,2) rectangle (0.5,1.5);  % top yellow square
            \fill[blue] (1,-0.5) rectangle (0.5,0);    % bottom blue square
            \fill[blue] (1,2.5) rectangle (0.5,2);     % top blue square
        \end{tikzpicture}
        \vspace*{-9em}\hspace*{3.2em}%
        \chapnumfont\textcolor{red}{Chapter \thechapter} % chapter number
        \vspace*{0.5em}\hspace*{2.3em}%
        \chaptitlefont\textcolor{purple}{ #1} % chapter title
        \vspace*{2em}
    }
}
\makeatother

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% DOCUMENT BEGINS
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
   \chapter{Introduction}
   \chapterLongerTitle{A two-line title goes here in but not aligning properly}
\end{document}

截图 1：

截图2：

谢谢

Answer 1

tikz这是一个例子，你的想法是对的，把所有东西都放到建筑中比移动东西来配合装饰要容易得多

编辑：添加了overlay让装饰不占用空间并因此进入边距的选项。如果不这样做，我们会因为\parbox文本宽度而得到一个过满的水平框。

\documentclass[a4paper]{memoir}
\setulmarginsandblock{2cm}*1
\checkandfixthelayout

\usepackage{xcolor, tikz}

\usetikzlibrary{calc}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% MY DEFAULT CHAPTER STYLING
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newif\ifNoChapNumber

\makeatletter
\setlength\midchapskip{0pt}
\makechapterstyle{myStyle}
{
    \renewcommand\chapternamenum{}      % erase default style
    \renewcommand\printchaptername{}    % erase default style
    \renewcommand\printchapternum{}     % erase default style
    \renewcommand\chapnumfont{\Large\sffamily}
    \renewcommand\chaptitlefont{\huge\bfseries\sffamily}
    \renewcommand\printchaptertitle[1]{%
      \begin{tikzpicture}
        \node[inner sep=0pt,anchor=north west] (title) at (0,0)
        {\parbox{\textwidth}{\raggedright\chaptitlefont ##1}};
        \coordinate (decobot) at (title.south west);
        \coordinate (decotop) at (title.north west);
        \ifNoChapNumber\else
        \node[inner sep=0pt,anchor=south west] (chapname) at
        ($(title.north west)+(0,0.2)$) {\chapnumfont\@chapapp~\thechapter};
        \coordinate (decotop) at (chapname.north west);
        \fi
        \def\DecoAdj{0.2}
        \coordinate (decotop) at ($(decotop)+(-\DecoAdj,\DecoAdj)$);
        \coordinate (decobot) at ($(decobot)+(-\DecoAdj,-\DecoAdj)$);
        \fill[red,overlay] (decotop) rectangle ++(-\DecoAdj,-\DecoAdj);
        \fill[red,overlay] (decotop) rectangle ++(\DecoAdj,\DecoAdj);
        \fill[red,overlay] (decobot) rectangle ++(\DecoAdj,-\DecoAdj);
        \fill[red,overlay] (decobot) rectangle ++(-\DecoAdj,\DecoAdj);
      \end{tikzpicture}
    }
    \renewcommand\printchapternonum{\NoChapNumbertrue}
}
\makeatother
\chapterstyle{myStyle}


% just to show all 3 examples on one page
\let\clearforchapter\relax

\begin{document}
   \chapter{Introduction}
   \chapter{A two-line title goes here in but not aligning properly}
   \chapter*{No number}
\end{document}