\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesPackage{stys/beautybook-cover-birkar}[2024/07/01,v2.0]
\usepackage{anyfontsize} % 提供\fontsize{}{}\selectfont命令
\usepackage{etoolbox} %提供自定义封面选项接口
\usepackage[dvipsnames,svgnames,x11names,table]{xcolor}%颜色宏包 % Driver-independent color extensions
\usepackage{tikz}
\usetikzlibrary{intersections, positioning, fit, backgrounds, shapes, fadings,
decorations.pathmorphing, graphs, quotes, angles, calc, through, backgrounds} % %Tikz指令库
\usepackage{graphicx} %插图
\usetikzlibrary{calc,fadings,patterns}
\usepackage{adjustbox} %修正minipage顶部对齐问题

% Define the layers to be used in document.
% *****************************************************
\pgfdeclarelayer{background} %背景%底层
\pgfdeclarelayer{foreground} %上层
\pgfdeclarelayer{top} %顶部
\pgfdeclarelayer{bottom} %底部
\pgfsetlayers{bottom,background,main,foreground,top}
\definecolor{RED}{RGB}{220, 41, 26}
\definecolor{arc color}{HTML}{546E7A}

\tikzfading[name=fade right,
                    right color =transparent!100,
                    left color=transparent!0]
\tikzfading[name=fade left,
                    left color =transparent!100,
                    right color=transparent!50]
\tikzfading[name=fade up,
                    top color =transparent!100,
                    bottom color=transparent!50]
\tikzfading[name=fade down,
                    bottom color =transparent!100,
                    top color=transparent!50]
\makeatletter
\newcommand{\aivcover}{
    \begin{tikzpicture}[remember picture,overlay]
        \begin{pgfonlayer}{bottom}
            \fill[coverfgcolor]         
            (current page.north west) rectangle (current page.south east);% 填充封面背景颜色 (coverbgcolor)
            \fill[RED]
            ([shift={(2.05cm,0)}]current page.north west) rectangle ([shift={(2.35cm,-6cm)}]current page.north west);
            \fill[coverfgcolor!80,opacity=0.5]
            ([shift={(0,-2cm)}]current page.north west) arc (90:-90:.3\paperheight) --cycle;
            \fill[coverfgcolor!80,opacity=0.5]
            ([shift={(0,-4cm)}]current page.north east) arc (90:270:.2\paperheight) --cycle;
            \fill[coverfgcolor!80] 
            (current page.north west) rectangle ([shift={(2cm,0)}]current page.south west);
            \begin{scope}[opacity=0.8]
                \coordinate (triangleA) at ([shift={(1cm,-1.5cm)}]current page.north);
                \coordinate (triangleB) at ([shift={(-.75\linewidth,-.44\paperheight)}]triangleA);
                \coordinate (triangleC) at ([shift={(.5\linewidth,-.44\paperheight)}]triangleA);
                \draw[name path=triangle,very thick,coverfgcolor!70!white] 
                (triangleA)--(triangleB)--(triangleC)--cycle;
                \draw[name path=circle,very thick,coverfgcolor!70!white]
                ([shift={(-1.65cm,-7.8cm)}]triangleA) coordinate (O) circle(6cm);
                %标注每个交点坐标
                \fill [name intersections={of=triangle and circle, name=i, total=\t}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \s in {1,...,\t}{(i-\s) circle (1em) node {}};
                \draw[name path=l,very thick,coverfgcolor!70!white] (i-1) -- (triangleC);
                \draw[very thick,coverfgcolor!70!white] (i-6) -- (triangleB);
                \draw[name path=l2,very thick,coverfgcolor!70!white] (i-4) -- (triangleA);
                \fill[name intersections={of=l and circle,name=j,total=\l}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \c in {1,...,\l}{(j-\c) circle (1em) node {}};
        
                \fill[name intersections={of=l2 and l,name=jj,total=\ll}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \cc in {1,...,\ll}{(jj-\cc) circle (1em) node {}};
                \end{scope}
            \end{pgfonlayer}
            \begin{pgfonlayer}{foreground}
                \fill[coverbar,opacity=.5]
                ([yshift=2\outermarginwidth]current page.west) rectangle ([xshift=\outermarginwidth,yshift=-.2\outermarginwidth]current page.west); % 最左侧装饰矩形
            \end{pgfonlayer}
            \shade[left color=coverfgcolor,right color=coverfgcolor!60,opacity=.3]
                ([xshift=\outermarginwidth,yshift=2\outermarginwidth]current page.west) rectangle (current page.south east); % 标题背景大矩形
            \node[anchor=south] at ([xshift=.3\outermarginwidth,yshift=-.4\covershift]current page.north) {%
                \parbox{.8\paperwidth}{
                \filright
                \color{white}\sffamily\fontsize{20}{23}\selectfont\@bookseries}
            }; %系列丛书名称
            \node[ anchor=south,below right] (covertitles) at ([xshift=1.8\outermarginwidth-0.2cm,yshift=2.7cm]current page.west)
            {\parbox{.8\paperwidth}{%
                \raggedright%
                {\renewcommand\baselinestretch{1.1}\selectfont           \color{white}\sffamily\bfseries\fontsize{40}{40}\selectfont\@title\\[0.5ex]
                    \color{white}\sc\fontsize{30}{30}\selectfont
                    \ifdefvoid{\@subtitle}{}{\@subtitle}\par}
            }};% 封面标题与副标题
            \node[anchor=west,font=\sc\fontsize{23}{23}\selectfont,text=white] at ([shift={(-.4\paperwidth,-6cm)}]covertitles) {\@edition};
            \node[anchor=west,font=\sffamily\Huge,text=white] at ([xshift=1.8\outermarginwidth-0.3cm,yshift=\covershift]current page.west) {\@author};
            \node[left,text=white,font=\rmfamily\Large,] at
                ([shift={(-2cm,2cm)}]current page.south east) 
                {\raisebox{-0.5cm}{\includegraphics[width=0.1\linewidth]{\@presslogo}}\hspace*{0ex}\begin{varwidth}{.4\textwidth}\tikz\draw[white,line width=1.25pt] (0,0)--++(0,1cm);\,\raisebox{.25cm}{\@pressname} \end{varwidth}};%
\end{tikzpicture}%
}

\newcommand{\lettercover}{
    \begin{tikzpicture}[remember picture,overlay]
        \begin{pgfonlayer}{bottom}
            \fill[coverfgcolor]         
            (current page.north west) rectangle (current page.south east);% 填充封面背景颜色 (coverbgcolor)
            \fill[RED]
            ([shift={(2.05cm,0)}]current page.north west) rectangle ([shift={(2.35cm,-6cm)}]current page.north west);
            \fill[coverfgcolor!80,opacity=0.5]
            ([shift={(0,-2cm)}]current page.north west) arc (90:-90:.3\paperheight) --cycle;
            \fill[coverfgcolor!80,opacity=0.5]
            ([shift={(0,-4cm)}]current page.north east) arc (90:270:.2\paperheight) --cycle;
            \fill[coverfgcolor!80] 
            (current page.north west) rectangle ([shift={(2cm,0)}]current page.south west);
            \begin{scope}[opacity=0.8]
                \coordinate (triangleA) at ([shift={(1cm,-1cm)}]current page.north);
                \coordinate (triangleB) at ([shift={(-.85\linewidth,-.46\paperheight)}]triangleA);
                \coordinate (triangleC) at ([shift={(.52\linewidth,-.46\paperheight)}]triangleA);
                \draw[name path=triangle,very thick,coverfgcolor!70!white] 
                (triangleA)--(triangleB)--(triangleC)--cycle;
                \draw[name path=circle,very thick,coverfgcolor!70!white]
                ([shift={(-1.6cm,-7.3cm)}]triangleA) coordinate (O) circle(6cm);
                %标注每个交点坐标
                \fill [name intersections={of=triangle and circle, name=i, total=\t}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \s in {1,...,\t}{(i-\s) circle (1em) node {}};
                \draw[name path=l,very thick,coverfgcolor!70!white] (i-1) -- (triangleC);
                \draw[very thick,coverfgcolor!70!white] (i-6) -- (triangleB);
                \draw[name path=l2,very thick,coverfgcolor!70!white] (i-4) -- (triangleA);
                \fill[name intersections={of=l and circle,name=j,total=\l}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \c in {1,...,\l}{(j-\c) circle (1em) node {}};
    
                \fill[name intersections={of=l2 and l,name=jj,total=\ll}]
                [coverbar,opacity=0.5, every node/.style={above left, white, opacity=1}]
                \foreach \cc in {1,...,\ll}{(jj-\cc) circle (1em) node {}};
                \end{scope}
            \end{pgfonlayer}
            \begin{pgfonlayer}{foreground}
                \fill[coverbar,opacity=.5]
                ([yshift=2\outermarginwidth]current page.west) rectangle ([xshift=\outermarginwidth,yshift=-.2\outermarginwidth]current page.west); % 最左侧装饰矩形
            \end{pgfonlayer}
            \shade[left color=coverfgcolor,right color=coverfgcolor!60,opacity=.3]
                ([xshift=\outermarginwidth,yshift=2\outermarginwidth]current page.west) rectangle (current page.south east); % 标题背景大矩形
            \node[anchor=south] at ([xshift=.3\outermarginwidth,yshift=-.4\covershift]current page.north) {%
                \parbox{.8\paperwidth}{
                \filright
                \color{white}\sffamily\fontsize{20}{23}\selectfont\@bookseries}
            }; %系列丛书名称
            \node[ anchor=south,below right] (covertitles) at ([xshift=1.8\outermarginwidth-0.2cm,yshift=2.7cm]current page.west)
            {\parbox{.8\paperwidth}{%
                \raggedright%
                {\renewcommand\baselinestretch{1.1}\selectfont           \color{white}\sffamily\bfseries\fontsize{40}{40}\selectfont\@title\\[0.5ex]
                    \color{white}\sc\fontsize{30}{30}\selectfont
                    \ifdefvoid{\@subtitle}{}{\@subtitle}\par}
            }};% 封面标题与副标题
            \node[anchor=west,font=\sc\fontsize{23}{23}\selectfont,text=white] at ([shift={(-.4\paperwidth,-6cm)}]covertitles) {\@edition};
            \node[anchor=west,font=\sffamily\Huge,text=white] at ([xshift=1.8\outermarginwidth-0.3cm,yshift=\covershift]current page.west) {\@author};
            \node[left,text=white,font=\rmfamily\Large,] at
                ([shift={(-2cm,2cm)}]current page.south east) 
                {\raisebox{-0.5cm}{\includegraphics[width=0.1\linewidth]{\@presslogo}}\hspace*{0ex}\begin{varwidth}{.4\textwidth}\tikz\draw[white,line width=1.25pt] (0,0)--++(0,1cm);\,\raisebox{.25cm}{\@pressname} \end{varwidth}};%
\end{tikzpicture}%
}

\newcommand\makecover{
    \thispagestyle{empty}
        \ifaivpaper@TF{\aivcover}{\lettercover}
    {\newpage\thispagestyle{empty}}
}
\makeatother

\endinput