Quiero trazar un borde en un cuadro o minipágina como este modelo. Un borde personalizable en ángulo izquierdo en la parte superior y derecho en la parte inferior. ¿Alguien puede ayudarme? Muchas gracias Jpierre
Respuesta1
Aquí simplemente apilo algunas reglas en torno a un color \parbox. La sintaxis es
\specialbox{<box-color>}{<frame-color>}{<frame-length>}{<box-width>}{<content>}
Se puede utilizar en línea o como su propio párrafo. Los valores de \fboxsepy \fboxruleson obedecidos. Al ser una caja, no se divide entre páginas.
Aquí está el MWE.
\documentclass{article}
\usepackage{xcolor,stackengine,lipsum}
\newcommand\specialbox[5]{%
\kern\fboxrule%
\stackinset{r}{}{b}{0pt}{\color{#2}\rule{\fboxrule}{#3}}{%
\stackinset{r}{}{b}{-\fboxrule}{\color{#2}\rule{#3}{\fboxrule}}{%
\stackinset{l}{-\fboxrule}{t}{0pt}{\color{#2}\rule{\fboxrule}{#3}}{%
\stackinset{l}{-\fboxrule}{t}{-\fboxrule}{\color{#2}\rule{#3}{\fboxrule}}{%
\colorbox{#1}{\parbox{\dimexpr#4-2\fboxsep-2\fboxrule}{#5}}%
}}}%
\kern\fboxrule}%
}
\begin{document}
\lipsum[1]
\fboxrule=3pt\relax%
\noindent\specialbox{yellow!95!orange}{yellow!50!orange}{40pt}{\linewidth}{\lipsum[3]}
\lipsum[2]
\fboxsep=10pt\relax\fboxrule=5pt\relax%
Testing\specialbox{cyan!10}{red}{50pt}{3in}{\lipsum[4]}inline
\end{document}
Respuesta2
Una respuesta inevitable con tcolorboxy definiendo algunas claves de estilo: ...lengthsse calculan desde las esquinas superior izquierda e inferior derecha, los colores se dan como se indica.
\documentclass{article}
\usepackage{blindtext}
\usepackage[most]{tcolorbox}
\usetikzlibrary{calc}
\begin{document}
\tcbset{
toplength/.store in={\tcbcornerruletoplength},
leftlength/.store in={\tcbcornerruleleftlength},
toplength=3cm,
leftlength=2cm,
bottomlength/.store in={\tcbcornerrulebottomlength},
rightlength/.store in={\tcbcornerrulerightlength},
bottomlength=3cm,
rightlength=2cm,
cornerruleshift/.store in={\tcbcornerruleshift},
cornerruleshift=1pt,
topcornercolor/.store in={\tcbtopcornercolor},
bottomcornercolor/.store in={\tcbbottomcornercolor},
topcornercolor=green!40!blue,
bottomcornercolor=blue!40!green,
}
\newtcolorbox{cornerbox}[1][]{%
enhanced jigsaw,
sharp corners,
boxrule=0pt,
underlay={
\coordinate (topend) at ($(frame.north west) + (0:\tcbcornerruletoplength)$);
\coordinate (leftend) at ($(frame.north west) - (90:\tcbcornerruleleftlength)$);
\coordinate (bottomend) at ($(frame.south east) - (0:\tcbcornerrulebottomlength)$);
\coordinate (rightend) at ($(frame.south east) + (90:\tcbcornerrulerightlength)$);
\draw[line width=2pt,\tcbtopcornercolor] ([xshift=-\tcbcornerruleshift]leftend) -- ([shift={(-\tcbcornerruleshift,\tcbcornerruleshift)}]frame.north west) -- ([shift={(-\tcbcornerruleshift,\tcbcornerruleshift)}] topend);
\draw[line width=2pt,\tcbbottomcornercolor] ([xshift=\tcbcornerruleshift]rightend) -- ([shift={(\tcbcornerruleshift,-\tcbcornerruleshift)}]frame.south east) -- ([shift={(-\tcbcornerruleshift,-\tcbcornerruleshift)}] bottomend);
},
#1,
}
\begin{cornerbox}
\blindtext
\end{cornerbox}
\begin{cornerbox}[topcornercolor={yellow!40!red}]
\blindtext
\end{cornerbox}
\end{document}
Actualizarcon colores y anchos de línea configurables:
\documentclass{article}
\usepackage{blindtext}
\usepackage[most]{tcolorbox}
\usetikzlibrary{calc}
\begin{document}
\tcbset{
% Lengths of the rules
northwestleft/.store in={\chnorthwestleftlength},
southwestleft/.store in={\chsouthwestleftlength},
northeastright/.store in={\chnortheastrightlength},
southeastright/.store in={\chsoutheastrightlength},
northwestleft=2cm,
southwestleft=2cm,
northeastright=2cm,
southeastright=2cm,
northleft/.store in={\chnorthleftlength},
northright/.store in={\chnorthrightlength},
southleft/.store in={\chsouthleftlength},
southright/.store in={\chsouthrightlength},
northleft=2cm,
southleft=2cm,
northright=2cm,
southright=2cm,
toplength/.forward to=/tcb/northright,
toplength/.forward to=/tcb/northleft,
leftlength/.forward to=/tcb/northwestleft,
leftlength/.forward to=/tcb/southwestleft,
rightlength/.forward to=/tcb/northeastright,
rightlength/.forward to=/tcb/southeastright,
bottomlength/.forward to=/tcb/southright,
bottomlength/.forward to=/tcb/southleft,
% Widths of the rules
northwestleftrule/.store in={\chnorthwestleftrule},
northwesttoprule/.store in={\chnorthwesttoprule},
northwestrule/.forward to=/tcb/northwestleftrule,
northwestrule/.forward to=/tcb/northwesttoprule,
northeastrightrule/.store in={\chnortheastrightrule},
northeasttoprule/.store in={\chnortheasttoprule},
northeastrule/.forward to=/tcb/northeastrightrule,
northeastrule/.forward to=/tcb/northeasttoprule,
southwestleftrule/.store in={\chsouthwestleftrule},
southwestbottomrule/.store in={\chsouthwestbottomrule},
southwestrule/.forward to=/tcb/southwestleftrule,
southwestrule/.forward to=/tcb/southwestbottomrule,
southeastrightrule/.store in={\chsoutheastrightrule},
southeastbottomrule/.store in={\chsoutheastbottomrule},
southeastrule/.forward to=/tcb/southeastrightrule,
southeastrule/.forward to=/tcb/southeastbottomrule,
northwestleftrule=2pt,
northwesttoprule=2pt,
southwestleftrule=2pt,
southwestbottomrule=2pt,
northeastrightrule=2pt,
northeasttoprule=2pt,
southeastrightrule=2pt,
southeastbottomrule=2pt,
northrules/.forward to=/tcb/northwestrule,
northrules/.forward to=/tcb/northeastrule,
southrules/.forward to=/tcb/southwestrule,
southrules/.forward to=/tcb/southeastrule,
allrules/.forward to=/tcb/northrules,
allrules/.forward to=/tcb/southrules,
% Colours
upperleftcolor/.store in={\chupperleftcolor},
upperrightcolor/.store in={\chupperrightcolor},
lowerrightcolor/.store in={\chlowerrightcolor},
lowerleftcolor/.store in={\chlowerleftcolor},
lowerleftcolor={blue},
lowerrightcolor={blue},
upperrightcolor={blue},
upperleftcolor={blue},
northcolor/.forward to=/tcb/upperleftcolor,
northcolor/.forward to=/tcb/upperrightcolor,
southcolor/.forward to=/tcb/lowerleftcolor,
southcolor/.forward to=/tcb/lowerrightcolor,
allcolors/.forward to=/tcb/northcolor,
allcolors/.forward to=/tcb/southcolor,
northwest/.style={%
sharp corners=northwest,
overlay app={
\coordinate (north west corner) at ([shift={(-0.5*\chnorthwestleftrule,\chnorthwesttoprule)}]frame.north west);
\coordinate (west start) at ([shift={(-0.5*\chnorthwestleftrule,-\chnorthwestleftlength)}]frame.north west);
\coordinate (north end) at ([shift={(\chnorthleftlength,\chnorthwesttoprule))}]frame.north west);
\draw[line width=\chnorthwestleftrule,\chupperleftcolor] (west start) -- (north west corner);
\draw[line width=\chnorthwesttoprule,\chupperleftcolor] ([yshift={(-0.5*\chnorthwesttoprule)}]north west corner) -- ([yshift={(-0.5*\chnorthwesttoprule)}]north end);
}
},
southeast/.style={
sharp corners=southeast,
overlay app={
\coordinate (south east corner) at ([shift={(0.5*\chsoutheastrightrule,-\chsoutheastbottomrule)}]frame.south east);
\coordinate (east end) at ([shift={(-\chsouthrightlength,-\chsoutheastbottomrule)}]frame.south east);
\coordinate (east start) at ([shift={(0.5*\chsoutheastrightrule,\chsoutheastrightlength)}]frame.south east);
\draw[line width=\chsoutheastrightrule,\chlowerrightcolor] (east start) -- (south east corner);
\draw[line width=\chsoutheastbottomrule,\chlowerrightcolor] ([yshift={(0.5*\chsoutheastbottomrule)}]south east corner) -- ([yshift={(0.5*\chsoutheastbottomrule)}]east end);
}
},
northeast/.style={
sharp corners=northeast,
overlay app={
\coordinate (north east corner) at ([shift={(0.5*\chnortheastrightrule,\chnortheasttoprule)}]frame.north east);
\coordinate (north start) at ([shift={(0.5*\chnortheastrightrule,-\chnortheastrightlength)}]frame.north east);
\coordinate (north end) at ([shift={(-\chnorthrightlength,\chnortheasttoprule))}]frame.north east);
\draw[line width=\chnortheastrightrule,\chupperrightcolor] (north start) -- (north east corner);
\draw[line width=\chnortheasttoprule,\chupperrightcolor] ([yshift={(-0.5*\chnortheasttoprule)}]north east corner) -- ([yshift={(-0.5*\chnortheasttoprule)}]north end);
}
},
southwest/.style={
sharp corners=southwest,
overlay app={
\coordinate (south west corner) at ([shift={(-0.5*\chsouthwestleftrule,-\chsouthwestbottomrule)}]frame.south west);
\coordinate (south start) at ([shift={(-0.5*\chsouthwestleftrule,\chsouthwestleftlength)}]frame.south west);
\coordinate (south end) at ([shift={(\chsouthleftlength,-\chsouthwestbottomrule)}]frame.south west);
\draw[line width=\chsouthwestleftrule,\chlowerleftcolor] (south start) -- (south west corner);
\draw[line width=\chsouthwestbottomrule,\chlowerleftcolor] ([yshift={(0.5*\chsouthwestbottomrule)}]south west corner) -- ([yshift={(0.5*\chsouthwestbottomrule)}]south end);
}
},
northwestsoutheast/.style={overlay={},northwest,southeast},
northeastsouthwest/.style={overlay={},northeast,southwest},
allcorners/.style={overlay={},northeastsouthwest,northwestsoutheast},
}
\newtcolorbox{cornerbox}[1][]{%
enhanced jigsaw,
boxrule=0pt,
northwestsoutheast,
#1
}
\makeatother
\begin{cornerbox}[northeastsouthwest,allcolors=yellow!20!red,allrules=2pt]
\blindtext
\end{cornerbox}
\begin{cornerbox}[allcolors=green!40!blue,northwestleftrule=5pt]
\blindtext
\end{cornerbox}
\end{document}
