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%% The LaTeX package tcolorbox - version 6.3.0 (2024/07/10)
%% tcbvignette.code.tex: Code for ornamental frames
%%
%% -------------------------------------------------------------------------------------------
%% Copyright (c) 2006-2024 by Prof. Dr. Dr. Thomas F. Sturm <thomas dot sturm at unibw dot de>
%% -------------------------------------------------------------------------------------------
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `author-maintained'.
%%
%% This work consists of all files listed in README
%%
\tcb@set@library@version{6.3.0}
\tcbuselibrary{skins}
\usetikzlibrary{fadings}
\pgfdeclarehorizontalshading{tcb@fade@east}{100bp}
{color(0bp)=(pgftransparent!50); color(25bp)=(pgftransparent!50);
color(75bp)=(pgftransparent!100); color(100bp)=(pgftransparent!100)}
\pgfdeclarehorizontalshading{tcb@fade@west}{100bp}
{color(0bp)=(pgftransparent!100); color(25bp)=(pgftransparent!100);
color(75bp)=(pgftransparent!50); color(100bp)=(pgftransparent!50)}
\pgfdeclareverticalshading{tcb@fade@north}{100bp}
{color(0bp)=(pgftransparent!50); color(25bp)=(pgftransparent!50);
color(75bp)=(pgftransparent!100); color(100bp)=(pgftransparent!100)}
\pgfdeclareverticalshading{tcb@fade@south}{100bp}
{color(0bp)=(pgftransparent!100); color(25bp)=(pgftransparent!100);
color(75bp)=(pgftransparent!50); color(100bp)=(pgftransparent!50)}
\pgfdeclarefading{semi east}{\pgfuseshading{tcb@fade@east}}
\pgfdeclarefading{semi west}{\pgfuseshading{tcb@fade@west}}
\pgfdeclarefading{semi north}{\pgfuseshading{tcb@fade@north}}
\pgfdeclarefading{semi south}{\pgfuseshading{tcb@fade@south}}
\def\tcb@vig@draw@north#1{\path[#1]\pgfextra{%
\pgfpathmoveto{\pgfqpoint{\tcb@vig@xA}{\tcb@vig@yB}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xB}{\tcb@vig@yB}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xb}{\tcb@vig@yb}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xa}{\tcb@vig@yb}}%
\pgfpathclose};}
\def\tcb@vig@draw@east#1{\path[#1]\pgfextra{%
\pgfpathmoveto{\pgfqpoint{\tcb@vig@xB}{\tcb@vig@yB}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xB}{\tcb@vig@yA}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xb}{\tcb@vig@ya}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xb}{\tcb@vig@yb}}%
\pgfpathclose};}
\def\tcb@vig@draw@south#1{\path[#1]\pgfextra{%
\pgfpathmoveto{\pgfqpoint{\tcb@vig@xB}{\tcb@vig@yA}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xA}{\tcb@vig@yA}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xa}{\tcb@vig@ya}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xb}{\tcb@vig@ya}}%
\pgfpathclose};}
\def\tcb@vig@draw@west#1{\path[#1]\pgfextra{%
\pgfpathmoveto{\pgfqpoint{\tcb@vig@xA}{\tcb@vig@yA}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xA}{\tcb@vig@yB}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xa}{\tcb@vig@yb}}%
\pgfpathlineto{\pgfqpoint{\tcb@vig@xa}{\tcb@vig@ya}}%
\pgfpathclose};}
\def\tcb@vig@draw@direct{%
\ifdim\tcb@vig@yB>\tcb@vig@yb\relax%
\begingroup\edef\x{\endgroup\noexpand\tcb@vig@draw@north{fill,draw=none,\expandonce\tcb@vig@style@north}}\x%
\fi%
\ifdim\tcb@vig@xB>\tcb@vig@xb\relax%
\begingroup\edef\x{\endgroup\noexpand\tcb@vig@draw@east{fill,draw=none,\expandonce\tcb@vig@style@east}}\x%
\fi%
\ifdim\tcb@vig@yA<\tcb@vig@ya\relax%
\begingroup\edef\x{\endgroup\noexpand\tcb@vig@draw@south{fill,draw=none,\expandonce\tcb@vig@style@south}}\x%
\fi%
\ifdim\tcb@vig@xA<\tcb@vig@xa\relax%
\begingroup\edef\x{\endgroup\noexpand\tcb@vig@draw@west{fill,draw=none,\expandonce\tcb@vig@style@west}}\x%
\fi%
}
\def\tcb@vig@draw@clipped{%
\ifdim\tcb@vig@yB>\tcb@vig@yb\relax%
\begin{scope}
\tcb@vig@draw@north{clip}%
\begingroup\edef\x{\endgroup\noexpand\path[fill,\expandonce\tcb@vig@style@north]}%
\x\pgfextra{\pgfpathrectanglecorners{\pgfpoint{\tcb@vig@xA-1mm}{\tcb@vig@yb}}%
{\pgfpoint{\tcb@vig@xB+1mm}{\tcb@vig@yB}}};
\end{scope}
\fi%
\ifdim\tcb@vig@xB>\tcb@vig@xb\relax%
\begin{scope}
\tcb@vig@draw@east{clip}%
\begingroup\edef\x{\endgroup\noexpand\path[fill,\expandonce\tcb@vig@style@east]}%
\x\pgfextra{\pgfpathrectanglecorners{\pgfpoint{\tcb@vig@xb}{\tcb@vig@yA-1mm}}%
{\pgfpoint{\tcb@vig@xB}{\tcb@vig@yB+1mm}}};
\end{scope}
\fi%
\ifdim\tcb@vig@yA<\tcb@vig@ya\relax%
\begin{scope}
\tcb@vig@draw@south{clip}%
\begingroup\edef\x{\endgroup\noexpand\path[fill,\expandonce\tcb@vig@style@south]}%
\x\pgfextra{\pgfpathrectanglecorners{\pgfpoint{\tcb@vig@xA-1mm}{\tcb@vig@yA}}%
{\pgfpoint{\tcb@vig@xB+1mm}{\tcb@vig@ya}}};
\end{scope}
\fi%
\ifdim\tcb@vig@xA<\tcb@vig@xa\relax%
\begin{scope}
\tcb@vig@draw@west{clip}%
\begingroup\edef\x{\endgroup\noexpand\path[fill,\expandonce\tcb@vig@style@west]}%
\x\pgfextra{%
\pgfpathrectanglecorners{\pgfpoint{\tcb@vig@xA}{\tcb@vig@yA-1mm}}%
{\pgfpoint{\tcb@vig@xa}{\tcb@vig@yB+1mm}}};
\end{scope}
\fi%
}
\newcommand{\tcbvignette}[1]{%
\ifdefined\pgfpictureid%
\begingroup%
\tcbset{vig/.cd,#1}%
\tcbdimto\tcb@vig@xA{\tcb@vig@xmin}%
\tcbdimto\tcb@vig@xB{\tcb@vig@xmax}%
\tcbdimto\tcb@vig@yA{\tcb@vig@ymin}%
\tcbdimto\tcb@vig@yB{\tcb@vig@ymax}%
\tcbdimto\tcb@vig@xa{\tcb@vig@xA+\tcb@vig@size@west}%
\tcbdimto\tcb@vig@xb{\tcb@vig@xB-(\tcb@vig@size@east)}%
\tcbdimto\tcb@vig@ya{\tcb@vig@yA+\tcb@vig@size@south}%
\tcbdimto\tcb@vig@yb{\tcb@vig@yB-(\tcb@vig@size@north)}%
\begin{scope}[tcb@vig@scope]%
\tcb@vig@draw%
\end{scope}
\endgroup%
\else%
\tcb@warning{'tcbvignette' was found outside a 'tikzpicture' environment and is ignored}%
\fi%
}
\tcbset{%
vig/.cd,
xmin/.store in=\tcb@vig@xmin,
xmax/.store in=\tcb@vig@xmax,
ymin/.store in=\tcb@vig@ymin,
ymax/.store in=\tcb@vig@ymax,
lower left corner/.code={\tcb@gettikzxy{(#1)}{\tcb@vig@xmin}{\tcb@vig@ymin}},
upper right corner/.code={\tcb@gettikzxy{(#1)}{\tcb@vig@xmax}{\tcb@vig@ymax}},
%
inside node/.style={lower left corner={#1.south west},upper right corner={#1.north east}},
outside node/.style={lower left corner={[xshift=-\tcb@vig@size@west,yshift=-\tcb@vig@size@south]#1.south west},
upper right corner={[xshift=\tcb@vig@size@east,yshift=\tcb@vig@size@north]#1.north east}},
%
on node/.style={lower left corner={#1.south west},upper right corner={#1.north east}},
over node offset/.store in=\tcb@vig@onoffset,%
over node/.style={lower left corner={[xshift=-\tcb@vig@onoffset,yshift=-\tcb@vig@onoffset]#1.south west},
upper right corner={[xshift=\tcb@vig@onoffset,yshift=\tcb@vig@onoffset]#1.north east}},
north size/.store in=\tcb@vig@size@north,
south size/.store in=\tcb@vig@size@south,
east size/.store in=\tcb@vig@size@east,
west size/.store in=\tcb@vig@size@west,
vertical size/.style={north size=#1,south size=#1},
horizontal size/.style={east size=#1,west size=#1},
size/.style={north size=#1,south size=#1,east size=#1,west size=#1},
north style/.store in=\tcb@vig@style@north,
south style/.store in=\tcb@vig@style@south,
east style/.store in=\tcb@vig@style@east,
west style/.store in=\tcb@vig@style@west,
scope/.code={\tikzset{tcb@vig@scope/.style={#1}}},
draw method/.is choice,
draw method/direct/.code={\let\tcb@vig@draw\tcb@vig@draw@direct},%
draw method/clipped/.code={\let\tcb@vig@draw\tcb@vig@draw@clipped},%
base color/.colorlet=tcbcol@vig@base,
raised color/.style={%
base color=#1,
north style={tcbcol@vig@base!50!white},
east style={tcbcol@vig@base!75!black},
south style={tcbcol@vig@base!50!black},
west style={tcbcol@vig@base!75!white},
},
lowered color/.style={%
base color=#1,
north style={tcbcol@vig@base!50!black},
east style={tcbcol@vig@base!75!white},
south style={tcbcol@vig@base!50!white},
west style={tcbcol@vig@base!75!black},
},
color from/.style args={#1 to #2}{%
north style={bottom color=#1,top color=#2},
east style={left color=#1,right color=#2},
south style={top color=#1,bottom color=#2},
west style={right color=#1,left color=#2},
},
fade in/.style={%
north style={#1,path fading=south},
east style={#1,path fading=west},
south style={#1,path fading=north},
west style={#1,path fading=east},
},
fade in/.default=white,
fade out/.style={%
north style={#1,path fading=north},
east style={#1,path fading=east},
south style={#1,path fading=south},
west style={#1,path fading=west},
},
fade out/.default=white,
semi fade in/.style={%
north style={#1,path fading=semi south},
east style={#1,path fading=semi west},
south style={#1,path fading=semi north},
west style={#1,path fading=semi east},
},
semi fade in/.default=white,
semi fade out/.style={%
north style={#1,path fading=semi north},
east style={#1,path fading=semi east},
south style={#1,path fading=semi south},
west style={#1,path fading=semi west},
},
semi fade out/.default=white,
%
scope=,
draw method=direct,
xmin=0pt,
xmax=1cm,
ymin=0pt,
ymax=1cm,
size=2mm,
over node offset=0.1mm,
raised color=red,
}
\tcbset{%
finish@vignette/.style 2 args={finish #1={%
\begin{tcbclipframe}\tcbvignette{%
scope={transparency group,opacity=0.25},
north style=white,
east style=black!75,
south style=black,
west style=black!25,#2,inside node=frame
}\end{tcbclipframe}}},
finish vignette/.style={%
finish@vignette={unbroken}{#1},%
finish@vignette={first}{#1,south size=0pt},%
finish@vignette={middle}{#1,north size=0pt,south size=0pt},%
finish@vignette={last}{#1,north size=0pt}%
},
%
finish@raised@vignette/.style 2 args={finish #1={%
\begin{tcbclipframe}\tcbvignette{%
draw method=clipped,
north style={white,path fading=semi south},
east style={black!75,path fading=semi west},
south style={black,path fading=semi north},
west style={black!25,path fading=semi east},#2,inside node=frame
}\end{tcbclipframe}}},
finish raised fading vignette/.style={%
finish@raised@vignette={unbroken}{#1},%
finish@raised@vignette={first}{#1,south size=0pt},%
finish@raised@vignette={middle}{#1,north size=0pt,south size=0pt},%
finish@raised@vignette={last}{#1,north size=0pt}%
},
%
finish@fading@vignette/.style 2 args={finish #1={%
\tcbvignette{%
draw method=clipped,fade in=tcbcol@vig@base,#2,over node=frame}}},
finish fading vignette/.style={%
finish@fading@vignette={unbroken}{base color=white,#1},%
finish@fading@vignette={first}{base color=white,#1,south size=0pt},%
finish@fading@vignette={middle}{base color=white,#1,north size=0pt,south size=0pt},%
finish@fading@vignette={last}{base color=white,#1,north size=0pt}%
},
%
underlay@vignette/.style 2 args={underlay #1={%
\begin{tcbclipframe}\tcbvignette{%
raised color=tcbcolframe,
north size=\kvtcb@top@rule@stand,
south size=\kvtcb@bottom@rule@stand,
west size=\kvtcb@left@rule,
east size=\kvtcb@right@rule,#2,inside node=frame
}\end{tcbclipframe}}},
underlay vignette/.style={%
underlay@vignette={unbroken}{#1},%
underlay@vignette={first}{#1,south size=0pt},%
underlay@vignette={middle}{#1,north size=0pt,south size=0pt},%
underlay@vignette={last}{#1,north size=0pt}%
},
%
underlay@fading@vignette/.style 2 args={underlay #1={%
\begin{tcbclipframe}\tcbvignette{%
draw method=clipped,
north style={white,path fading=semi south},
east style={black!75,path fading=semi west},
south style={black,path fading=semi north},
west style={black!25,path fading=semi east},#2,inside node=frame,
}\end{tcbclipframe}}},
underlay raised fading vignette/.style={%
underlay@fading@vignette={unbroken}{#1},%
underlay@fading@vignette={first}{#1,south size=0pt},%
underlay@fading@vignette={middle}{#1,north size=0pt,south size=0pt},%
underlay@fading@vignette={last}{#1,north size=0pt}%
},
%
underlay raised shading vignette/.style={%
underlay vignette={draw method=clipped,
north style={bottom color=tcbcolframe,top color=tcbcolframe!33!white},
east style={left color=tcbcolframe,right color=tcbcolframe!66!black},
south style={top color=tcbcolframe,bottom color=tcbcolframe!33!black},
west style={right color=tcbcolframe,left color=tcbcolframe!66!white},#1}},
%
underlay shade in vignette/.style={%
underlay vignette={draw method=clipped,color from=tcbcolback to tcbcolframe,#1}},
}
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