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mdframed 与 tikz-framework: roundcorner-keyword 似乎不能完全工作

tag-icon • tag-icon tikz-pgf beamer mdframed
mdframed 与 tikz-framework: roundcorner-keyword 似乎不能完全工作

我遇到了类似的问题如何绘制带有圆角的框

我尝试制作圆形 boxex 用于海报展示，使用 mdframed-package 和 tikz-option 几乎可以成功。但内线几乎不圆，我看不出原因。一些小示例代码：

\documentclass{beamer}
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}

\usepackage[absolute,overlay]{textpos}
\usepackage[framemethod=tikz]{mdframed}

\tikzset{contour/.style = {rounded corners = 2ex}}

\definecolor{posterbackground}{RGB}{255,245,225}    %beige
%\definecolor{blockborder}{RGB}{0,128,0}    %green
%\definecolor{blockborder}{RGB}{0,0,0}      %black
\definecolor{blockborder}{RGB}{235,235,235} %light grey

\mdfdefinestyle{frameborderstyle}%
{innerlinewidth=0.1em, innerlinecolor=black, middlelinewidth=1.0em, middlelinecolor=blockborder, outerlinewidth=0.1em, outerlinecolor=black, frametitlerule=false, innertopmargin=\topskip, backgroundcolor=posterbackground, roundcorner=0.5em}
%{outerlinecolor=blockborder, outerlinewidth=10pt, innerlinewidth=5pt, backgroundcolor=posterbackground, roundcorner=50pt}
\newenvironment{textframe}[4][]%
{\colorlet{currentcolor}{.} \fboxrule0.2em\fboxsep1.0em \begin{textblock*}{#2}(#3,#4) \begin{mdframed}[style=frameborderstyle, frametitle=#1]}
{\end{mdframed} \end{textblock*} \vspace{2.0ex}}

\begin{document}
 \begin{frame}{blabla}
 \begin{textframe}{1500pt}{50pt}{670pt}
  this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame this is written in a textpos-frame
 \end{textframe}
 \end{frame}
\end{document}

即使使用 roundcorner 关键字后内角仍保持边缘

我究竟做错了什么？

答案1

你必须了解 TikZ 对圆弧的计算。这很重要，因为mdframed对内圆弧没有额外的修改。当然我可以实现它。

让我们采取以下 mwe：

\documentclass{article}

\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
 \draw[line width=2ex,rounded corners = 1ex] (0,0) rectangle (7,4);
\end{tikzpicture}
\end{document}

线宽为2ex，弧长为1ex。结果为：

如您所见，内弧不存在。如果您增加的rounded corners幅度大于2ex您将得到：

\documentclass{article}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
 \draw[line width=2ex,rounded corners = 3ex] (0,0) rectangle (7,4);
\end{tikzpicture}
\end{document}

与您的示例相关：您使用的是innerlinewidth=0.1em，middlelinewidth=1.0em并且outerlinewidth=0.1em这导致宽度1.2em。另一方面，您指定了roundcorner=0.5em。正如解释的0.5em那样太小了。

因此，您可以使用更大的尺寸，roundcorner或者重新定义一些内部命令来指定内弧。

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