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宏根據當前章節返回長度

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宏根據當前章節返回長度

我正在使用 scrbook 編寫文檔，並且定義了自訂章節樣式，在其中使用 tikz 繪製較大的章節編號：

\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture, overlay]
    \node[anchor=south east, yshift=1.2cm, xshift=\textwidth,
          inner sep=0, outer sep=0]{%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}

章節編號應該與文字區域的右側對齊，但事實並非如此，因為數字周圍有空格，該空格是字元的一部分：

在此輸入影像描述

每個數字到右邊界的距離都不同。為了完美對齊，我想按章調整章節編號的位置。我實現此目的的想法是定義一個命令，根據當前值返回不同的長度\thechapter，然後使用此命令定義xshift章節號：

\newcommand*{\chapteroffset}{%
\IfEndWith{\thechapter}{1}{\textwidth+15mm}{%
\IfEndWith{\thechapter}{2}{\textwidth+5mm}{%
\IfEndWith{\thechapter}{3}{\textwidth+6mm}{%
\textwidth+0mm%
}}}%
}

\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture, overlay]
    \node[anchor=south east, yshift=1.2cm, xshift=\chapteroffset,
          inner sep=0, outer sep=0]{%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}

我嘗試了多種不同的方法來實現此目的，但到目前為止，所有這些方法都導致了某種無限循環，我的文件無法完成建置。我懷疑原因是我沒有使用正確的方法從 if 表達式傳回維度。

如何從巨集中返回隨當前章節更改的尺寸？請注意，它還需要適用於附錄中的非整數。或者，我如何以不同的方式實現圖片中的外觀？

這是我目前狀態的 MWE：

\documentclass[BCOR=15mm, DIV=8]{scrbook}

\KOMAoptions{
    headings=twolinechapter,
    chapterprefix=false,
    numbers=noenddot
}

\usepackage{typearea}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{
    calc,
    positioning}
\tikzset{>=latex}
\usepackage{tikzpagenodes}

\usepackage{etoolbox}
\usepackage{xstring}
\usepackage{calc}

\definecolor{laccentcolor}{HTML}{d3d3d3}


\addtokomafont{disposition}{\rmfamily}

% Macro that determines the per-chapter offsets.
% If I use this definition, the document will not finish building.
% \newcommand*{\chapteroffset}{%
% \IfEndWith{\thechapter}{1}{\textwidth+15mm}{%
% \IfEndWith{\thechapter}{2}{\textwidth+5mm}{%
% \IfEndWith{\thechapter}{3}{\textwidth+6mm}{%
% \textwidth+0mm%
% }}}%
% }

% returning a fixed length from the macro like this works
\newcommand*{\chapteroffset}{\textwidth+5mm}

\addtokomafont{chapter}{\scshape\LARGE}

\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture, overlay]
    \node[anchor=south east, yshift=1.2cm, xshift=\chapteroffset,
          inner sep=0, outer sep=0]{%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}
\renewcommand*{\chapterheadstartvskip}{\vspace*{10cm}}

\begin{document}
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
\end{document}

答案1

您可以將班次儲存在您可以使用的陣列中。由於您正在加載tikzpagenodes，我還建議使用該套件。

\documentclass[BCOR=15mm, DIV=8]{scrbook}

\KOMAoptions{
    headings=twolinechapter,
    chapterprefix=false,
    numbers=noenddot
}

\usepackage{typearea}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{
    calc,
    positioning}
\tikzset{>=latex}
\usepackage{tikzpagenodes}

\usepackage{etoolbox}
\usepackage{xstring}
\usepackage{calc}

\definecolor{laccentcolor}{HTML}{d3d3d3}


\addtokomafont{disposition}{\rmfamily}


% returning a fixed length from the macro like this works
\newcommand*{\chapteroffset}{\textwidth+5mm}

\addtokomafont{chapter}{\scshape\LARGE}

\def\chaplengths{{11mm,5mm,6mm}}
\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture]
\coordinate (mychapanchor-\arabic{chapter});
\end{tikzpicture}
\begin{tikzpicture}[remember picture, overlay]
    \pgfmathsetmacro{\mylength}{\chaplengths[\arabic{chapter}-1]}
    \node[anchor=south east,xshift=\mylength,
          inner sep=0, outer sep=0]
          at ([yshift=1.2cm]mychapanchor-\arabic{chapter}-| current page text area.east){%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}
\renewcommand*{\chapterheadstartvskip}{\vspace*{10cm}}

\begin{document}
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
\end{document}

在此輸入影像描述

答案2

您可以\int_case:nnF使用expl3：

\documentclass[BCOR=15mm, DIV=8]{scrbook}

\KOMAoptions{
    headings=twolinechapter,
    chapterprefix=false,
    numbers=noenddot
}

\usepackage{typearea}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{lipsum,showframe}

\usepackage{tikz}
\usetikzlibrary{
    calc,
    positioning}
\tikzset{>=latex}
\usepackage{tikzpagenodes}

\usepackage{xparse}

\definecolor{laccentcolor}{HTML}{d3d3d3}


\addtokomafont{disposition}{\rmfamily}

% Macro that determines the per-chapter offsets.
\ExplSyntaxOn
\NewExpandableDocumentCommand{\chapteroffset}{}
 {
  \textwidth+
  \int_case:nnF { \int_mod:nn { \value{chapter} } { 10 } }
   {
    {1}{11mm} % shift for last digit 1
    {2}{5mm} % shift for last digit 2
    {3}{6mm} % shift for last digit 3
   }
   {1mm} % shift for all other cases
 }
\ExplSyntaxOff

\addtokomafont{chapter}{\scshape\LARGE}

\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture, overlay]
    \node[anchor=south east, yshift=1.2cm, xshift=\chapteroffset,
          inner sep=0, outer sep=0]{%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}
\renewcommand*{\chapterheadstartvskip}{\vspace*{10cm}}

\begin{document}
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
\end{document}

在此輸入影像描述

如果您想處理附錄，請新增「變數命令」。也許scrbook有一個內建的條件來測試它是否在附錄部分。如果是的話，用它來代替自製的應該不難\ifappendix。

\documentclass[BCOR=15mm, DIV=8]{scrbook}

\KOMAoptions{
    headings=twolinechapter,
    chapterprefix=false,
    numbers=noenddot
}

\usepackage{typearea}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{lipsum,showframe}

\usepackage{tikz}
\usetikzlibrary{
    calc,
    positioning}
\tikzset{>=latex}
\usepackage{tikzpagenodes}

\usepackage{xparse}

\definecolor{laccentcolor}{HTML}{d3d3d3}


\addtokomafont{disposition}{\rmfamily}

% Macro that determines the per-chapter offsets.
\NewExpandableDocumentCommand{\chapteroffset}{}
 {
  \textwidth+
  \ifappendix\offsetforchapter\else\offsetforappendix\fi
 }
\newif\ifappendix
\ExplSyntaxOn
\NewExpandableDocumentCommand{\offsetforchapter}{}
 {
  \int_case:nnF { \int_mod:nn { \value{chapter} } { 10 } }
   {
    {1}{11mm}
    {2}{5mm}
    {3}{6mm}
   }
   {1mm} % all other cases
 }
\NewExpandableDocumentCommand{\offsetforappendix}{}
 {
  \int_case:nnF { \value{chapter} }
   {
    {1}{11mm} % offset for A
    {2}{5mm}  % offset for B
    {3}{6mm}  % offset for C
   }
   {1mm} % all other cases
 }
\ExplSyntaxOff

\addtokomafont{chapter}{\scshape\LARGE}

\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture, overlay]
    \node[anchor=south east, yshift=1.2cm, xshift=\chapteroffset,
          inner sep=0, outer sep=0]{%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}
\renewcommand*{\chapterheadstartvskip}{\vspace*{10cm}}

\begin{document}

\chapter{A Fancy Chapter Name to Test the Formatting}
\lipsum[1-2]

\chapter{A Fancy Chapter Name to Test the Formatting}
\lipsum[1-2]

\chapter{A Fancy Chapter Name to Test the Formatting}
\lipsum[1-2]

\appendix\appendixtrue

\chapter{A Fancy Chapter Name to Test the Formatting}
\lipsum[1-2]

\end{document}

答案3

根據土撥鼠和egreg的答案，這就是我最終使用的：

\newif\ifappendix

\def\chaplengths{{11mm,6mm,7mm,2.5mm,7mm,5mm,6mm,7mm,6.5mm}}
\def\applengths{{4mm,8.5mm,6mm}}
\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture]
\coordinate (mychapanchor-\arabic{chapter});
\end{tikzpicture}
\begin{tikzpicture}[remember picture, overlay]
    \pgfmathsetmacro{\mylength}{\ifappendix\applengths[\arabic{chapter}-1]\else\chaplengths[\arabic{chapter}-1]\fi}
    \node[anchor=south east,xshift=\mylength,
          inner sep=0, outer sep=0]
          at ([yshift=1.2cm]mychapanchor-\arabic{chapter}-| current page text area.east){%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}

完整的 MWE：

\documentclass[BCOR=15mm, DIV=8]{scrbook}

\KOMAoptions{
    headings=twolinechapter,
    chapterprefix=false,
    numbers=noenddot
}

\usepackage{typearea}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage[T1]{fontenc}
\usepackage{microtype}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{
    calc,
    positioning}
\tikzset{>=latex}
\usepackage{tikzpagenodes}

\usepackage{etoolbox}
\usepackage{xstring}
\usepackage{calc}

\definecolor{laccentcolor}{HTML}{d3d3d3}


\addtokomafont{disposition}{\rmfamily}


\addtokomafont{chapter}{\scshape\LARGE}

\newif\ifappendix

\def\chaplengths{{11mm,6mm,7mm,2.5mm,7mm,5mm,6mm,7mm,6.5mm}}
\def\applengths{{4mm,8.5mm,6mm}}
\renewcommand*{\chapterformat}{%
\begin{tikzpicture}[remember picture]
\coordinate (mychapanchor-\arabic{chapter});
\end{tikzpicture}
\begin{tikzpicture}[remember picture, overlay]
    \pgfmathsetmacro{\mylength}{\ifappendix\applengths[\arabic{chapter}-1]\else\chaplengths[\arabic{chapter}-1]\fi}
    \node[anchor=south east,xshift=\mylength,
          inner sep=0, outer sep=0]
          at ([yshift=1.2cm]mychapanchor-\arabic{chapter}-| current page text area.east){%
        \fontsize{10cm}{10cm}\selectfont%
        \textcolor{laccentcolor}{\thechapter}%
    };
    % alignment line
    \draw[thin] (current page text area.north east)
        -- (current page text area.south east);
\end{tikzpicture}%
}
\renewcommand*{\chapterheadstartvskip}{\vspace*{10cm}}

\begin{document}
% 1
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 2
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 3
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 4
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 5
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 6
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 7
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 8
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

% 9
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]

    \appendix\appendixtrue

% A
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
% B
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
% C
    \chapter{A Fancy Chapter Name to Test the Formatting}
    \lipsum[1]
\end{document}

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