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eso-pic 中的 tikz 图片

tag-icon • tag-icon tikz-pgf eso-pic
eso-pic 中的 tikz 图片

我构造了一个名为的宏，用于在每个页面上\drawline按包绘制图片（按包）。当我两次调用此宏以在不同位置绘制两条线并使用不同的颜色（红色和蓝色）时，排版会给出两条线，颜色相同（红色 - 上次调用时给出的颜色）。为什么以及如何处理这个问题？ PS：在下面的 MWE 中，只给出了一个参数。事实上，除了 tikz 之外还有几个其他参数，所以必须使用。tikzeso-pic\pgfkeys

\documentclass{article}
\usepackage{tikz,eso-pic,xparse,picture}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\drawlinecenter}{%
  \AddToShipoutPictureBG{%
    \AtTextCenter{%
      \put(\xx,\yy){%
      \begin{tikzpicture}
        \draw[center,line width=6pt]
          (0,0) -- (0,1);
      \end{tikzpicture}
    }}}}
%    
\newcommand{\drawlineupperleft}{%
  \AddToShipoutPictureBG{%
    \AtTextUpperLeft{%
      \put(\xx,\yy){%
      \begin{tikzpicture}
        \draw[upperleft,line width=6pt]
          (0,0) -- (0,1);
      \end{tikzpicture}
    }}}}
%      
% main macro:
\NewDocumentCommand{\drawline}{O{}m}{% #1-optional style arg. #2-position
  \tikzset{%
    x/.code=\def\xx{##1},x/.default=0pt,
    y/.code=\def\yy{##1},y/.default=0pt,
    #2/.style={x,y,#1}
  }
  \pgfkeys{/tikz/.cd,x,y,#1}
  \csname drawline#2\endcsname
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\drawline[color=blue,x=1cm]{center}
\drawline[color=red,x=10cm]{upperleft}
firstpage\clearpage second page\clearpage third page
\end{document}

答案1

您正在覆盖线条颜色。我可能会将这些东西存储在样式中。除了解决问题之外，您还会更加灵活，例如可以添加例如dashed等等。

\documentclass{article}
\usepackage{tikz,eso-pic,xparse}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\drawlinecenter}{%
  \AddToShipoutPictureBG{%
    \AtTextCenter{%
      \begin{tikzpicture}
        \draw[center,line width=6pt]
          (0,0) -- (0,1);
      \end{tikzpicture}
    }}}
%    
\newcommand{\drawlineupperleft}{%
  \AddToShipoutPictureBG{%
    \AtTextUpperLeft{%
      \begin{tikzpicture}
        \draw[upperleft,line width=6pt]
          (0,0) -- (0,1);
      \end{tikzpicture}
    }}}
%      
% main macro:
\NewDocumentCommand{\drawline}{O{}m}{% #1-optional style arg. #2-position
  \tikzset{#2/.style={#1}}
  \csname drawline#2\endcsname
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\drawline[color=blue]{center}
\drawline[color=red]{upperleft}
firstpage\clearpage second page\clearpage third page
\end{document}

在此处输入图片描述

答案2

感谢 marnot，以下可能是一个解决方案（其中pgf's /.expanded使用）：

\documentclass{article}
\usepackage{tikz,eso-pic,picture}

\begin{document}
% main macro:
\NewDocumentCommand{\drawline}{O{}m}{% #1-optional style arg. #2-position
  \pgfkeys{%
    x/.store in=\x,x/.default=0,
    y/.store in=\y,y/.default=0,
    color/.store in=\cl,color/.default=blue,
    tc/.code n args={3}{%
        \AddToShipoutPictureBG{%
          \AtTextCenter{%
             \put(##1,##2){%
               \tikz\draw[draw=##3,line width=6pt](0,0) -- (0,1);
            }}}},
    ul/.code n args={3}{%
        \AddToShipoutPictureBG{%
          \AtTextUpperLeft{%
            \put(##1,##2){%
              \tikz\draw[draw=##3,line width=6pt](0,0) -- (0,1);
            }}}},  
   }
   \pgfkeys{x,y,color,#1,#2/.expanded={\x}{\y}{\cl}}
 }
% test
\drawline[color=green,x=-5cm]{tc}
\drawline{tc}
\drawline[color=red,x=0cm,y=-3cm]{ul}

first page\clearpage second page\clearpage third page
\end{document}

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