Scale down verbatim environment even further

Question

I am using the fancyvrb package. Even though I set the font size to \tiny, it still doesn't properly fit in a single slide. I was wondering is there a way to scale it down even further. Thank you

\documentclass{beamer}
\usepackage{graphicx}
\usetheme{default}
\usepackage{float}
\usepackage{tikz}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage{bibentry}
\usepackage{setspace}
\usepackage{amssymb}
\usepackage{mathtools}
\usepackage{xcolor}
\usepackage{mathrsfs}
\usepackage{soul}
\usepackage{algorithm}
\usepackage{algpseudocode}
\usepackage{spverbatim}
\usepackage{multicol}
\usepackage{fancyvrb}
\usepackage[super]{nth}
\usepackage{listings}
\usepackage{linegoal}
\usepackage{calc}
\usepackage{tikz-qtree}
\usepackage{forest}
\begin{document}
\begin{frame}[fragile=singleslide]{Example}{Classical attribute grammar to find semantic errors in a program}
\scalebox{.9}{
\begin{multicols}{2}
\begin{Verbatim}[fontsize=\tiny]
program -> block
    block.env = empty_env()
    program.msgs = block.msgs
block -> "begin" decls stmts "end"
    decls.envin = block.env
    stmts.env = decls.envout
    decls.uin = stmts.used
    block.used = decls.uout
    block.msgs = decls.msgs ++ stmts.msgs
decls ->
    decls.envout = decls.envin
    decls.uout = decls.uin
    decls.msgs = { }
decls -> decls decl
  decls1.envin = decls0.envin
  decl.envin = decls1.envout
  decls0.envout = decl.envout
  decl.uin = decls0.uin
  decls1.uin = decl.uout
  decls0.uout = decls1.uout
  decls0.msgs = decls1.msgs ++ decl.msgs
decl -> id ":" type ";"
  decl.envout = add_env(<id, type.shape>, decl.envin)
  decl.uout = decl.uin - id
  decl.msgs = if id in decl.uin then
                { }
              else
                { "unused: " + id }
type -> "integer"
  type.shape = INTSHAPE
type -> "string"
  type.shape = STRSHAPE
stmt ->
  stmts.used = { }
  stmts.msgs = { }
stmts -> stmts stmt
  stmts1.env = stmts0.env
  stmt.env = stmts0.env
  stmts0.used = stmts1.used ++ stmt.used
  stmts0.msgs = stmts1.msgs ++ stmt.msgs
stmt -> block ";"
  block.env = stmt.env
  stmt.used = block.used
  stmt.msgs = block.msgs
stmts -> expr ":=" expr ";"
  expr1.env = stmt.env
  expr2.env = stmt.env
  stmt.used = expr1.used ++ expr2.used
  stmt.msgs = (if expr1.shape != expr2.shape then
                { "type mismatch" }
              else
                { }) ++ expr.msgs
expr -> INT_CONSTANT
  expr.shape = INTSHAPE
  expr.used = { }
  expr.msgs = { }
expr -> strconstant
  expr.shape = STRSHAPE
  expr.used = { }
  expr.msgs = { }
expr -> id
  local shape = lookup(id, expr.env)
  expr.shape = shape
  expr.used = { id }
  expr.msgs = if shape == NOT_FOUND then
                { id + " not declared" }
              else
                { }
\end{Verbatim}
\end{multicols}}
\end{frame}
\end{document}

With scale box:

Without scale box:

reconsider the content of your slide. If the text doesn't fit in tiny, you have to much text. Depending on how you present it is perhaps even not readable at all. — Ulrike Fischer, Dec 05 '21 at 10:01
unrelated to beamer you can not have multicols in a scalebox — David Carlisle, Dec 05 '21 at 12:36
Do you really expect anyone to be able to read \tiny text on a slide? Rethink how you are showing stuff to your audience (maybe two slides?) — Peter Wilson, Dec 05 '21 at 18:01

score 8 · Accepted Answer · answered Dec 05 '21 at 07:12

This way? See: How to get an even smaller font size than \tiny?.

\documentclass{beamer}
\usepackage{graphicx}
\usetheme{default}
\usepackage{float}
\usepackage{tikz}
\usepackage{amsfonts}
\usepackage{amsmath}
\usepackage{bibentry}
\usepackage{setspace}
\usepackage{amssymb}
\usepackage{mathtools}
\usepackage{xcolor}
\usepackage{mathrsfs}
\usepackage{soul}
\usepackage{algorithm}
\usepackage{algpseudocode}
\usepackage{spverbatim}
\usepackage{multicol}
\usepackage{fancyvrb}
\usepackage[super]{nth}
\usepackage{listings}
\usepackage{linegoal}
\usepackage{calc}
\usepackage{tikz-qtree}
\usepackage{forest}
\begin{document}
\begin{frame}[fragile=singleslide]{Example}{Classical attribute grammar to find semantic errors in a program}
\begin{multicols}{2}
\begin{Verbatim}[fontsize=\fontsize{2.5}{4}\selectfont]
program -> block
    block.env = empty_env()
    program.msgs = block.msgs
block -> "begin" decls stmts "end"
    decls.envin = block.env
    stmts.env = decls.envout
    decls.uin = stmts.used
    block.used = decls.uout
    block.msgs = decls.msgs ++ stmts.msgs
decls ->
    decls.envout = decls.envin
    decls.uout = decls.uin
    decls.msgs = { }
decls -> decls decl
  decls1.envin = decls0.envin
  decl.envin = decls1.envout
  decls0.envout = decl.envout
  decl.uin = decls0.uin
  decls1.uin = decl.uout
  decls0.uout = decls1.uout
  decls0.msgs = decls1.msgs ++ decl.msgs
decl -> id ":" type ";"
  decl.envout = add_env(<id, type.shape>, decl.envin)
  decl.uout = decl.uin - id
  decl.msgs = if id in decl.uin then
                { }
              else
                { "unused: " + id }
type -> "integer"
  type.shape = INTSHAPE
type -> "string"
  type.shape = STRSHAPE
stmt ->
  stmts.used = { }
  stmts.msgs = { }
stmts -> stmts stmt
  stmts1.env = stmts0.env
  stmt.env = stmts0.env
  stmts0.used = stmts1.used ++ stmt.used
  stmts0.msgs = stmts1.msgs ++ stmt.msgs
stmt -> block ";"
  block.env = stmt.env
  stmt.used = block.used
  stmt.msgs = block.msgs
stmts -> expr ":=" expr ";"
  expr1.env = stmt.env
  expr2.env = stmt.env
  stmt.used = expr1.used ++ expr2.used
  stmt.msgs = (if expr1.shape != expr2.shape then
                { "type mismatch" }
              else
                { }) ++ expr.msgs
expr -> INT_CONSTANT
  expr.shape = INTSHAPE
  expr.used = { }
  expr.msgs = { }
expr -> strconstant
  expr.shape = STRSHAPE
  expr.used = { }
  expr.msgs = { }
expr -> id
  local shape = lookup(id, expr.env)
  expr.shape = shape
  expr.used = { id }
  expr.msgs = if shape == NOT_FOUND then
                { id + " not declared" }
              else
                { }
\end{Verbatim}
\end{multicols}
\end{frame}
\end{document}

Scale down verbatim environment even further

1 Answers1