与内部装订线齐平

Question

我正在寻找一个命令或环境，用于将后面的内容向页面内侧对齐/对齐。（当然，这只对双面文档有意义。）更具体地说，我想将我的图形对齐到页面的内边缘。

是否存在这样的命令或环境？

梅威瑟：

\documentclass[a4paper, draft]{scrbook}
\usepackage{todonotes}

\begin{document}
    
    \begin{figure}
        %\begin{flushinner} ??
            \missingfigure[figwidth=6cm, figheight=15cm]{}
        %\end{flushinner}
        \caption{This figure should be aligned to the left because it is on a "right page"}
    \end{figure}
    
    \begin{figure}
        %\begin{flushinner} ??
            \missingfigure[figwidth=6cm, figheight=15cm]{}
        %\end{flushinner}
        \caption{This figure should be aligned to the right because it is on a "left page"}
    \end{figure}

\end{document}

Answer 1

KoMa 课程提供\ifthispageodd（它使用标签，因此需要多次运行才能工作）。

\documentclass[a4paper,draft]{scrbook}

\usepackage{graphicx}

\begin{document}
    
    \begin{figure}
    \ifthispageodd{\ignorespaces}{\hfill}
    \includegraphics[width=6cm,height=15cm]{example-image-a}
    \caption{This figure should be aligned to the left because it is on a recto page. Text text text.}
    \end{figure}
    
    \begin{figure}
    \ifthispageodd{\ignorespaces}{\hfill}
    \includegraphics[width=6cm,height=15cm]{example-image-b}
    \caption{This figure should be aligned to the right because it is on a verso page. Text text text.}
    \end{figure}

\end{document}

Answer 2

感谢 David Carlisle 和 campa，这里有一个可行的解决方案：

\documentclass[a4paper]{scrbook}
\usepackage{graphicx}

\newenvironment{flushinner}{
        \ifthispageodd{
            \begin{flushleft}
        }{
            \begin{flushright}
        }
    }{
        \ifthispageodd{
            \end{flushleft}
        }{
            \end{flushright}
        }
}

\begin{document}
    
    \begin{figure}
        \begin{flushinner}
            \includegraphics[height=15cm]{some-figure}
        \end{flushinner}
        \caption{This figure should be aligned to the left} 
    \end{figure}
    
    \begin{figure}
        \begin{flushinner}
            \includegraphics[height=15cm]{some-figure}
        \end{flushinner}
        \caption{This figure should be aligned to the right}
    \end{figure}

\end{document}