如何绘制类似文件档案的形状？

Question

如何使用 TikZ 绘制这样的形状？

Answer 1

部分102.5.3 声明新形状的命令pgf 手册包含一个示例，其中声明了一个document类似于您请求的形状。double copy shadow向此形状添加 即可获得所需的结果。

代码（根据需要调整设置）：

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shadows}

\makeatletter
\pgfdeclareshape{document}{
\inheritsavedanchors[from=rectangle] % this is nearly a rectangle
\inheritanchorborder[from=rectangle]
\inheritanchor[from=rectangle]{center}
\inheritanchor[from=rectangle]{north}
\inheritanchor[from=rectangle]{south}
\inheritanchor[from=rectangle]{west}
\inheritanchor[from=rectangle]{east}
% ... and possibly more
\backgroundpath{% this is new
% store lower right in xa/ya and upper right in xb/yb
\southwest \pgf@xa=\pgf@x \pgf@ya=\pgf@y
\northeast \pgf@xb=\pgf@x \pgf@yb=\pgf@y
% compute corner of ‘‘flipped page’’
\pgf@xc=\pgf@xb \advance\pgf@xc by-7.5pt % this should be a parameter
\pgf@yc=\pgf@yb \advance\pgf@yc by-7.5pt
% construct main path
\pgfpathmoveto{\pgfpoint{\pgf@xa}{\pgf@ya}}
\pgfpathlineto{\pgfpoint{\pgf@xa}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xc}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@yc}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@ya}}
\pgfpathclose
% add little corner
\pgfpathmoveto{\pgfpoint{\pgf@xc}{\pgf@yb}}
\pgfpathlineto{\pgfpoint{\pgf@xc}{\pgf@yc}}
\pgfpathlineto{\pgfpoint{\pgf@xb}{\pgf@yc}}
\pgfpathlineto{\pgfpoint{\pgf@xc}{\pgf@yc}}
}
}
\makeatother

\begin{document}

\begin{tikzpicture}

\node[
  shape=document,
  double copy shadow={
    shadow xshift=-0.5ex,
    shadow yshift=-0.5ex
  },
  draw,
  fill=white,
  line width=1pt,
  text width=1cm,
  minimum height=1.7cm
  ] {};
\end{tikzpicture}

\end{document}

如果要多次使用，可以定义一种样式来简化代码。

Answer 2

这是一个解决方案。如果你想多次重复使用它，你可以将它放在 中pic。

\usetikzlibrary{shadings}
\usetikzlibrary{shadows}

\begin{tikzpicture}
  \foreach \i in {1,2,3} {
    \begin{scope}[shift={(.2*\i,.2*\i)}]
      \draw[bottom color=black!7, top color=white, drop shadow={shadow xshift=-.4ex}]
        (0,0) -- ++(3,0) -- ++(0,3)  -- ++(-1,1) -- ++(-2,0) -- cycle;
      \draw (3,3) -| (2,4);
    \end{scope}
  }
\end{tikzpicture}