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The question title says pretty all. I need a half-filled square symbol which can't be found in the amssymb package: something between \blacksquare and \square.

enter image description here

I've tried to read the source files at http://tug.ctan.org/fonts/amsfonts/source/amssymb.dtx, but it seems that I will have to use the TikZ/PGF anyway. How to proceed?

[edit] The minimal working example

\documentclass{article}
\usepackage{Alegreya}
\usepackage{amssymb} 
% \usepackage{stix} % uncomment this line
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\begin{document}
\section{Introduction}
Symbols used here include $\blacksquare$ and $\square$.
\end{document}

shows that stix changes font used in whole document. Including stix before Alegreya changes appearance of \square, which is not desired.

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  • 1
    Hi, Have you seen at the link tug.ctan.org/info/symbols/comprehensive/symbols-a4.pdf? There is \squarellblack or \squarelrblack with stixpackage Geometric Shapes.
    – Sebastiano
    May 13, 2017 at 9:05
  • @Sebastiano, the Stix package offers \squarelrblack which is exactly what I wanted. Unfortunately, it breaks compatibility with other packages in my preamble, for example Alegreya.
    – Santiago
    May 13, 2017 at 9:08
  • Could you kindly add your complete code, please?
    – Sebastiano
    May 13, 2017 at 9:10
  • @Sebastiano the MWE has been added.
    – Santiago
    May 13, 2017 at 9:14
  • 1
    Santiago thanks a lot lot for your collaboration.
    – Sebastiano
    May 13, 2017 at 9:28

1 Answer 1

3
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{stix}
\usepackage{Alegreya}
\usepackage{amssymb} 
\usepackage[utf8]{inputenc}
\begin{document}
    \section{Introduction}
    Symbols used here include $\blacksquare$ and $\square$
    and $\squarelrblack$.
\end{document}

enter image description here

or load stix as \usepackage[notextcomp]{stix} if you want it after amssymb. It is also possible to use only the \squarelrblack from stix, but then the symbol is bigger than the ones from amssymb:

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{Alegreya}
\usepackage{amssymb} 
\makeatletter
\DeclareFontEncoding{LS2}{}{\noaccents@}
\DeclareFontSubstitution{LS2}{stix}{m}{n}
\DeclareSymbolFont{arrows3}{LS2}{stixtt}{m}{n}
\DeclareMathSymbol{\squarelrblack}{\mathord}{arrows3}{"89}
\makeatother
\usepackage[utf8]{inputenc}
\begin{document}
    \section{Introduction}
    Symbols used here include $\blacksquare$ and $\square$
    and $\squarelrblack$.
\end{document}

enter image description here

3
  • Stix before Alegreya changes appearance of \square and \blacksquare.
    – Santiago
    May 13, 2017 at 9:18
  • 1
    Herbert I was doing the same thing myself. I vote +1 for your answer. :-)
    – Sebastiano
    May 13, 2017 at 9:20
  • 1
    @Santiago: sure, they are from stix, too. I f you do not like it, the write your own command \SquarelrBlack
    – user2478
    May 13, 2017 at 9:23

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