
眾所周知,LaTeX 內建指令\newtheorem
可以產生一系列相似的定理環境:它們具有相同的佈局樣式主題,但名稱和計數器樣式等不同。
我定義了一個彩色文字框,用於輸出精美風格的課堂筆記,使用 Tik最近Z。雖然具體的風格讓我自己很滿意,但也給我帶來了某種不便。因為我想將定義、引理和結論等放入不同但相似的樣式中,所以我必須使用十多行程式碼一一定義這樣的環境。
MWE在這裡:
\documentclass{book}
\usepackage{tikz}
\usepackage{xcolor}
\usepackage{environ}
\usepackage{amsmath,mathrsfs,amsfonts}
\usetikzlibrary{shapes,decorations}
\definecolor{bule}{RGB}{18,29,57}
\definecolor{bablue}{RGB}{248,248,248}
\definecolor{main}{RGB}{127,191,51}
\definecolor{seco}{RGB}{0,145,215}
\definecolor{thid}{RGB}{180,27,131}
%define the style of tikz newthemsty
\tikzstyle{newthemsty}
=[draw=seco, fill=blue!10,very thick,rectangle,
rounded corners, inner sep=10pt, inner ysep=20pt]
\tikzstyle{newthemstytitle}
=[fill=seco, text=blue!10]
%%define the "newthem" environment
\newcounter{Newthem}[chapter]
\renewcommand{\theNewthem}{\thechapter.\arabic{Newthem}}
\NewEnviron{newthem}[1][{}]{%
\noindent\centering
\begin{tikzpicture}
\node[newthemsty] (box){
\begin{minipage}{0.93\columnwidth}
\sffamily\BODY
\end{minipage}};
\node[newthemstytitle,right=10pt] at (box.north west){
\bfseries\textsf{Theorem \stepcounter{Newthem}\theNewthem\; #1}};
\node[newthemstytitle, rounded corners] at (box.east) {$\clubsuit$};
\end{tikzpicture}
}[\par\vspace{.5\baselineskip}]
\begin{document}
\begin{newthem}
test
\end{newthem}
\end{document}
及其輸出:
如果我想要一個可以定義這樣的環境的命令,並且我能夠修改顏色(背景和邊緣)、字體形狀(斜體或直立)和系列(粗體或非粗體)、標籤中的名稱(在這裡說「定理」)和計數器(在或沒有另一個計數器內),我該怎麼辦?
任何線索或提示將不勝感激。
答案1
您想要做的是將程式碼包裝在另一個巨集中,該巨集將採用名稱和一些設定來控制顏色和樣式。在這裡我試圖粗略地模仿\newtheorem
和\theoremstyle
。
\documentclass{book}
\usepackage{tikz}
\usepackage{xcolor}
\usepackage{environ}
\usepackage{amsmath,mathrsfs,amsfonts}
\usepackage{xparse}
\usetikzlibrary{shapes,decorations}
\definecolor{bule}{RGB}{18,29,57}
\definecolor{bablue}{RGB}{248,248,248}
\definecolor{main}{RGB}{127,191,51}
\definecolor{seco}{RGB}{0,145,215}
\definecolor{thid}{RGB}{180,27,131}
\newcommand{\newfancytheoremstyle}[5]{%
\tikzset{#1/.style={draw=#3, fill=#2,very thick,rectangle,
rounded corners, inner sep=10pt, inner ysep=20pt}}
\tikzset{#1title/.style={fill=#3, text=#2}}
\expandafter\def\csname #1headstyle\endcsname{#4}
\expandafter\def\csname #1bodystyle\endcsname{#5}
}
\newfancytheoremstyle{fancythrm}{blue!10}{seco}{\bfseries\sffamily}{\sffamily}
\makeatletter
\DeclareDocumentCommand{\newfancytheorem}{ O{\@empty} m m m O{fancythrm} }{%
% define the counter for the theorem
\ifx#1\@empty
\newcounter{#2}
\else
\newcounter{#2}[#1]
\numberwithin{#2}{#1}
\fi
%% define the "newthem" environment
\NewEnviron{#2}[1][{}]{%
\noindent\centering
\begin{tikzpicture}
\node[#5] (box){
\begin{minipage}{0.93\columnwidth}
\csname #5bodystyle\endcsname \BODY~##1
\end{minipage}};
\node[#5title, right=10pt] at (box.north west){
{\csname #5headstyle\endcsname #3 \stepcounter{#2}\csname the#2\endcsname\; ##1}};
\node[#5title, rounded corners] at (box.east) {#4};
\end{tikzpicture}
}[\par\vspace{.5\baselineskip}]
}
\makeatother
% Define new styles
% \newfancytheoremstyle{<name>}{inner color}{outer color}{head style}{body style}
\newfancytheoremstyle{fancydef}{green!10}{green}{\itshape\sffamily}{\sffamily}
% Define some new environments
% \newfancytheorem[<number within>]{<name>}{<head>}{<symbol>}[<style>]
\newfancytheorem[chapter]{newthem}{Theorem}{$\clubsuit$}
\newfancytheorem[section]{newcor}{Corollary}{$\heartsuit$}
\newfancytheorem{newdef}{Definition}{$\spadesuit$}[fancydef]
\begin{document}
\begin{newthem}
test
\end{newthem}
\begin{newcor}
test
\end{newcor}
\begin{newdef}
test
\end{newdef}
\end{document}
使用\newfancytheoremstyle
巨集定義樣式(顏色和字體)並
\newfancytheorem
定義新環境。我用來xparse
處理多個選項參數。請注意,「內部」環境的參數是用 來引用的,##1
而不是#1
。