我正在使用 scrbook 编写文档，并且定义了自定义章节样式，其中我使用 tikz 绘制了一个大章节编号：
\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}%
}
章节编号应该与文本区域的右侧对齐，但是由于数字周围的空格是字符的一部分，因此并没有对齐：
每个数字到右边框的距离都不同。为了实现完美对齐，我想根据每个章节调整章节编号的位置。我的想法是定义一个命令，根据当前的值返回不同的长度\thechapter，然后使用此命令定义xshift章节编号的：
\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}%
}
我尝试了多种不同的方法来实现这一点，但到目前为止，所有这些方法都导致了某种无限循环，导致我的文档无法完成构建。我怀疑原因是我没有使用正确的方法从 if 表达式返回维度。
如何从随当前章节变化的宏中返回尺寸？请注意，它还需要适用于附录中的非整数。或者，我如何以不同的方式实现图片中的外观？
这是我的当前 MWE 状态：
\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
您可以将班次存储在可以使用的数组中。由于您正在加载tikzpagenodes，因此我还建议使用该包。
\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}
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}
如果要处理附录，请添加“变量命令”。也许scrbook有一个内置条件来测试它是否在附录部分。如果是这样，使用它代替自制的应该不难\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
根据 marmot 和 egreg 的回答，我最终使用了以下方法：
\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 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}