graphicssymbols
I would like to add camera symbol to headwords with photos (sometimes the photos are placed just bellow the headword, sometimes on the other page) so the user of dictionary can find certainly the photos. Is there a nice camera symbol, something like \Bicycle symbol etc. ? If no, what is the best way to do it?
The picture above illustrates using png picture, but the height of the line is enlarged.
There is \providecommand that defines a macro if it is not yet defined. Together with \renewcommand you have your "\extranewcommand":
\providecommand{\foo}{}
\renewcommand{\foo}[1]{bar: #1}
Or you can switch to the plain TeX primitives (other syntax!), e.g.:
\long\def\foo#1{bar: #1}
(\renewcommand and friends without star use \long\def and if the star form is given, \def without \long is used. Also the parameters are specified differently.)
\declarecommandA definition of the "requested" \declarecommand that calls \providecommand and \renewcommand together:
\documentclass{article}
\makeatletter
\newcommand*{\declarecommand}{%
\@star@or@long\declare@command
}
\newcommand*{\declare@command}[1]{%
\provide@command{#1}{}%
% \let#1\@empty % would be more efficient, but without error checking
\renew@command{#1}%
}
\makeatother
\begin{document}
\declarecommand*{\foo}{\typeout{foo 1: \meaning\foo}}
\foo
\declarecommand{\foo}{\typeout{foo 2: \meaning\foo}}
\foo
\declarecommand*{\foo}[1]{\typeout{foo #1: \meaning\foo}}
\foo{3}
\end{document}
Result:
foo 1: macro:->\typeout {foo 1: \meaning \foo }
foo 2: \long macro:->\typeout {foo 2: \meaning \foo }
foo 3: macro:#1->\typeout {foo #1: \meaning \foo }
I am not sure if you are searching really for long side captions, but otherwise, this is a way using minipages for the main text and adjustbox package to have top aligned images:
\documentclass[a4paper]{article}
\usepackage[export]{adjustbox}%
\usepackage{lipsum,graphicx}
\parskip1em
\def\capR#1#2{\includegraphics[width=.3\linewidth,valign=t]{#1}%
\hfill\begin{minipage}[t]{.6\textwidth}#2\end{minipage}}
\def\capL#1#2{\begin{minipage}[t]{.6\textwidth}#2\end{minipage}
\hfill\includegraphics[width=.3\linewidth,valign=t]{#1}}
\begin{document}
\capR{example-image-9x16}{\lipsum[2]}
\capR{example-image-a}{\lipsum[3]}
\capL{example-image-a}{\lipsum[4]}
\end{document}
For the secondary question, you can use an \ifoddpage conditional of the changepage or ifoddpage packages (here a MWE with the former).
Edit:
If wrapping text is needed, another approach is a wrapfigure inside a minipage. This approach also solve messing you with \ifoddpage testings using the I position and twoside. The problem then is when the text is too short. Rhen the height of the minipage environment will be less that the height of the image. But fortunately you can force the height of the minipages. Example:
\documentclass[a4paper,twoside]{article}
\usepackage{lipsum,graphicx,calc}
\usepackage{wrapfig}
\parskip1em\parindent0pt
\intextsep0pt
\newlength\gh \newlength\gw
\def\ImgNW#1#2{
\def\mygraphic{\includegraphics[width=.25\linewidth]{#1}}
\setlength\gh{\heightof{\mygraphic}}
\setlength\gw{\widthof{\mygraphic}}
\begin{minipage}[t][\gh+1em]{\textwidth}
\begin{wrapfigure}{I}[0pt]{0.25\textwidth}
\includegraphics[width=\linewidth]{#1}
\end{wrapfigure}#2
\end{minipage}\par}
\def\ImgW#1#2{
\def\mygraphic{\includegraphics[width=.25\linewidth]{#1}}
\setlength\gh{\heightof{\mygraphic}}
\setlength\gw{\widthof{\mygraphic}}
\begin{minipage}[t]{\textwidth}
\begin{wrapfigure}{I}[0pt]{0.25\textwidth}
\includegraphics[width=\linewidth]{#1}
\end{wrapfigure}#2
\end{minipage}\par}
\begin{document}
\ImgNW{example-image-9x16}{\lipsum[2]}
\ImgW{example-image-a}{\parskip1em\lipsum[3-4]}
\ImgW{example-image-b}{\lipsum[4]}
\newpage
\ImgW{example-image-c}{\lipsum[5]}
\ImgNW{example-image-9x16}{\lipsum[6]}
\ImgW{example-image-1x1}{\lipsum[7]}
\end{document}
Best Answer
If you can work with
XeLaTeXorLuaLaTeX,fontawesomepackage provides\faCameraand\faCameraRetroicons. (Update:fontawesomealso works with pdflatex since version 4.3.0)