Custom boxed title box environment

tcolorbox

I am trying to get the boxed title box environment from the Peter Atkins Physical Chemistry book which looks like this,

After reading documentation of tcolorbox pacakge I have found out that in Manual for the tcolorbox package, in section '10.2.3 Options for the Boxed Title Box' there is one customized tcolorbox style.

\documentclass{article}
\usepackage[most]{tcolorbox}
\usepackage{lipsum}
\usepackage{varwidth}
\newtcolorbox{mybox}[2][]{enhanced,
before skip=2mm,after skip=2mm, colback=black!5,colframe=black!50,boxrule=0.2mm,
attach boxed title to top left={xshift=1cm,yshift*=1mm-\tcboxedtitleheight}, varwidth boxed title*=-3cm,
boxed title style={frame code={
            \path[fill=tcbcolback!30!black]
              ([yshift=-1mm,xshift=-1mm]frame.north west)
                arc[start angle=0,end angle=180,radius=1mm]
              ([yshift=-1mm,xshift=1mm]frame.north east)
                arc[start angle=180,end angle=0,radius=1mm];
            \path[left color=tcbcolback!60!black,right color=tcbcolback!60!black,
              middle color=tcbcolback!80!black]
              ([xshift=-2mm]frame.north west) -- ([xshift=2mm]frame.north east)
              [rounded corners=1mm]-- ([xshift=1mm,yshift=-1mm]frame.north east)
              -- (frame.south east) -- (frame.south west)
              -- ([xshift=-1mm,yshift=-1mm]frame.north west)
              [sharp corners]-- cycle;
            },interior engine=empty,
          },
          fonttitle=\bfseries,
          title={#2},#1}

\begin{document}

        \begin{mybox}[colbacktitle=green]{Lorem Ipsum}
        \lipsum[1]
        \end{mybox}

\end{document}

which looks bit similar to the Atkins one is given, but I am unable to achieve the Atkins box style

Any help is appreciated.

Edit: After some efforts I have got this result
using tcolorbox package,

\documentclass{article}
\usepackage{lipsum}
\usepackage[most]{tcolorbox}
\usepackage{xcolor}


\definecolor{mygreen}{HTML}{07a56d}

\newtcbtheorem{briefillus}{Brief Illustration}{
  enhanced,
  sharp corners,
  attach boxed title to top left={
    xshift=0pt, 
    yshift=-\tcboxedtitleheight, 
    yshifttext=-\tcboxedtitleheight/2
  },
  colback=white,
  colframe=mygreen,
  fonttitle=\bfseries,
  coltitle=white,
  boxed title style={
    rounded corners,
    arc=2pt,
    size=small,
    colback=mygreen,
    colframe=mygreen,
  },
  leftrule=0pt, 
  rightrule=0pt, 
}{thm}

\begin{document}

\begin{briefillus}{Lorem Ipsum}{}
  \lipsum[1]
\end{briefillus}

\end{document}

But I am still not able to achieve that inverted isoceles trapezium for title box with rounded corners on lower side.

Best Answer

This is a possible solution. You just need to define a frame code for the title frame:

\documentclass{article}
\usepackage{lipsum}
\usepackage[most]{tcolorbox}
\usepackage{xcolor}


\definecolor{mygreen}{HTML}{07a56d}

\newtcbtheorem{briefillus}{Brief Illustration}{
  enhanced,
  sharp corners,
  attach boxed title to top left={
    xshift=5pt, 
    yshift*=-\tcboxedtitleheight-0.5mm, 
%    yshifttext=-\tcboxedtitleheight/2
  },
  colback=white,
  colframe=mygreen,
  fonttitle=\bfseries,
  coltitle=white,
  boxed title style={
     frame code={\fill[tcbcolback]([xshift=-5pt]frame.north west) [rounded corners=2pt]--(frame.south west)--(frame.south east)[sharp corners]--([xshift=5pt]frame.north east)--cycle;},
%    rounded corners,
%    arc=2pt,
    size=small,
    colback=mygreen,
    colframe=mygreen,
  },
  leftrule=0pt, 
  rightrule=0pt, 
}{thm}

\begin{document}

\begin{briefillus}{Lorem Ipsum}{}
  \lipsum[1]
\end{briefillus}

\end{document}

Related Solutions

[Tex/LaTex] tcolorbox: how to put shadow to whole box with boxed title

Something like this? You can adjust the settings to improve the match. This is just an illustration of the method.

\documentclass[12pt]{article}
\usepackage[papersize={5.5in,8.5in},margin=1.5cm]{geometry}
\usepackage[many]{tcolorbox}
\usetikzlibrary{calc,shadows.blur}
\tcbuselibrary{skins}
\newtcolorbox{resp}[1][]{%
  enhanced jigsaw,
  colback=gray!20!white,%
  colframe=gray!80!black,
  size=small,
  boxrule=1pt,
  title=\textbf{\textit{Answer}},
  halign title=flush center,
  coltitle=black,
  breakable,
  drop shadow=black!50!white,
  attach boxed title to top left={xshift=1cm,yshift=-\tcboxedtitleheight/2,yshifttext=-\tcboxedtitleheight/2},
  minipage boxed title=3cm,
  boxed title style={%
    colback=white,
    size=fbox,
    boxrule=1pt,
    boxsep=2pt,
    underlay={%
      \coordinate (dotA) at ($(interior.west) + (-0.5pt,0)$);
      \coordinate (dotB) at ($(interior.east) + (0.5pt,0)$);
      \begin{scope}
        \clip (interior.north west) rectangle ([xshift=3ex]interior.east);
        \filldraw [white, blur shadow={shadow opacity=60, shadow yshift=-.75ex}, rounded corners=2pt] (interior.north west) rectangle (interior.south east);
      \end{scope}
      \begin{scope}[gray!80!black]
        \fill (dotA) circle (2pt);
        \fill (dotB) circle (2pt);
      \end{scope}
    },
  },
  #1,
}

\begin{document}
\begin{resp}
  An box with a shadow {\ttfamily:)}
\end{resp}
\end{document}

[Tex/LaTex] Environment with amsthm and tcolorbox – Attach boxed title to top

Never mix ntheorem or amsthm and tcbtheorem. Rather use only one of them and separate their definitions.
If i understand you correctly, you look for something like this:

Title (text beside "Theorem" or "Definition") is obligatory field, so if you not like to have this text, leave it empty. for example: \begin{YetAnotherTheorem}{}{mittelwertsatz_n4}.

Above image is generated by:

\documentclass{scrbook}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{xcolor}
\usepackage{tcolorbox}
\tcbuselibrary{many}
\usepackage{varwidth}

%Theorem with tcolorbox
\newtcbtheorem{YetAnotherTheorem}{Theorem}%
{
    enhanced jigsaw, breakable,
    frame empty, interior empty,
    colframe=green!50!white, coltitle=green!50!black,
    fonttitle=\bfseries,colbacktitle=green!15!white,
    borderline={1mm}{0mm}{green},
    attach boxed title to top center={yshift=-2mm},
    boxed title style={boxrule=0.4pt},
    varwidth boxed title
}{theo}

\newtcbtheorem{definition}{Definition}%
{
    enhanced jigsaw, breakable,
    colframe=blue,colback=blue!20!white,
    breakable,
    before skip=10pt,after skip=10pt,
    attach boxed title to top center={yshift=-2mm}
}{def}

\begin{document}
\begin{YetAnotherTheorem}{Mittelwertsatz f\"{u}r $n$ Variable}{mittelwertsatz_n4}
    Es sei $n\in\mathbb{N}$, $D\subseteq\mathbb{R}^n$ eine offene Menge und
    $f\in C^{1}(D,\mathbb{R})$. Dann gibt es auf jeder Strecke
    $[x_0,x]\subset D$ einen Punkt $\xi\in[x_0,x]$, so dass gilt
\[
f(x)-f(x_0) = \operatorname{grad} f(\xi)^{\top}(x-x_0)
\]
\end{YetAnotherTheorem}

\begin{YetAnotherTheorem}{}{mittelwertsatz_n4}
    Es sei $n\in\mathbb{N}$, $D\subseteq\mathbb{R}^n$ eine offene Menge und
    $f\in C^{1}(D,\mathbb{R})$. Dann gibt es auf jeder Strecke
    $[x_0,x]\subset D$ einen Punkt $\xi\in[x_0,x]$, so dass gilt
\[
f(x)-f(x_0) = \operatorname{grad} f(\xi)^{\top}(x-x_0)
\]
\end{YetAnotherTheorem}

\begin{definition}{}{important-definition}
    Eine Funktion $f:~I\to\mathbb{R}$ auf einem Intervall $I$ hei\ss{}t in $x_0\in I$ differenzierbar oder linear approximierbar, wenn der Grenzwert
\[
\lim\limits_{x\to x_0}\frac{f(x)-f(x_0)}{x-x_0}=\lim\limits_{h\to 0}\frac{f(x_0+h)-f(x_0)}{h}
\]
    existiert. Bei Existenz hei\ss{}t dieser Grenzwert Ableitung oder Differentialquotient von $f$ in $x_0$ und man schreibt f\"{u}r ihn
\[
f’(x_0)\quad\text{oder}\quad\frac{df}{dx}(x_0).
\]
\end{definition}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] tcolorbox: how to put shadow to whole box with boxed title

[Tex/LaTex] Environment with amsthm and tcolorbox – Attach boxed title to top

Related Question