Fix circled command (#42)

paper.tex

@@ -135,14 +135,14 @@
 \newunicodechar{α}{\ensuremath{\alpha}}
 \newunicodechar{β}{\ensuremath{\beta}}
 
-
 % \circled command to print a colored circle.
 % \circled{1} pretty-prints "(1)"
 % This is useful to refer to labels that are embedded within figures.
-\usepackage{tikz}
-\usetikzlibrary{arrows}
-\usetikzlibrary{shapes}
-\DeclareRobustCommand\circled[2][]{\ifthenelse{\isempty{#1}}{\tikz[baseline=(char.base)]{\node[shape=circle,fill=pairedOneLightBlue,inner sep=1pt] (char) {#2};}}{\autoref{#1}: \hyperref[#1]{\tikz[baseline=(char.base)]{\node[shape=circle,fill=pairedOneLightBlue,inner sep=1pt] (char) {#2};}}}}
+\DeclareRobustCommand{\circled}[2][]{%
+    \ifthenelse{\isempty{#1}}%
+        {\circledbase{pairedOneLightBlue}{#2}}%
+        {\autoref{#1}: \hyperref[#1]{\circledbase{pairedOneLightBlue}{#2}}}%
+}
 
 % listings don't write "Listing" in autoref without this.
 \providecommand*{\listingautorefname}{Listing}

tex/setup.tex

@@ -127,7 +127,7 @@
 \fi
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% Add minted and support costum lexers
+% Add minted and support custom lexers
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \usepackage{minted}
 \usepackage{etoolbox}
@@ -171,3 +171,36 @@
 {
 }
 \makeatother
+
+\usepackage{tikz}
+\usetikzlibrary{arrows}
+\usetikzlibrary{shapes}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Base style and command for \circled to print a colored circle
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Width is assured to be the same across all characters using the typewriter font which is monospaced
+% Zeroing out the inner separator removes padding between content and node (inner sep).
+% Zeroing out the outer separator removes space between the node border and its anchors (e.g., east).
+% Minimum size was derived on experimentation and it may need adjustment when changing font style/size.
+%
+% There is no guarantee for the letter ascenders/descenders to baseline when set to char.base, hence adding \strut.
+% which is an invisible vertical rule with the height and depth of the parentheses ( and ).
+% It ensures that the line height in a line of text is at least as large as if it contained parentheses. 
+\tikzset{
+  circledstyle/.style={
+    shape=circle,
+    #1,
+    font=\tt\small,
+    inner sep=0pt,
+    outer sep=0pt,
+    minimum size=1.2em,
+    text=black
+  }
+}
+
+% define a base tikz node for circled commands accepting a fill colour and the node text as arguments
+\DeclareRobustCommand{\circledbase}[3][]{%
+    \tikz[baseline=(char.base)]{\node[circledstyle, fill=#2] (char) {#3\strut};}%
+}
+