nice-screen-shoots-in-pdf

Screenshots are bitmaps and any text on a screen shoot will therefore look bad if scaled. To use screenshots in presentations, scaling must thus be avoided. The screenshot must therefore be created in the same size as it will be viewed in a the presentation. Take care to know where if beamer will use 800x600 or 1024x768, and make two versions of your presentation.

• If you want a particular window to fill the frame in the presentation, resize the window to 800x600
• take a snapshot with your favourite snapshot application (I use ksnapshot)
• Save the snapshot as foo.png
• use this bash-script on foo.png

#!/bin/bash

UNIQUEFILENAME="`date +%Y%m%d%H%M%S`"

pngtopnm "$1" | pnmtops -noturn -equalpixels > $UNIQUEFILENAME.ps
ps2eps --preserveorientation $UNIQUEFILENAME.ps
eps2eps $UNIQUEFILENAME.eps $UNIQUEFILENAME-2.eps
name=`basename $1 .png`
epstopdf --outfile "$name".pdf $UNIQUEFILENAME-2.eps
rm $UNIQUEFILENAME.ps $UNIQUEFILENAME.eps $UNIQUEFILENAME-2.eps

• The resulting foo.pdf will look good at 800x600.
• To create a frame in latex-beamer with zero margins filled with the image "listor" use

\setbeamertemplate{background canvas}{\includegraphics[height=\paperheight,width=\paperwidth]{listor}}
\begin{frame}[plain]

\end{frame}
}

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Last modified: oktober 17, 2019