Printing to screen

This is how to setup a hack that re-directs printouts to a screen.

Limitations:

Only works on Linux
Can only send output to a pre-defined DISPLAY

Background work:

Become the root user
```
su - 
```
Ensure SELinux is disabled or a SELinux rule is set to allow cups to run scripts from /etc/cups/interfaces/
Install mpage and ggv
```
yum install mpage ggv 
```
Go to the lp user's home directory
```
cd ~lp 
```

Create the files required by ggv for the lp user

touch .recently-used
mkdir .gnome .gnome2 .gnome2_private
chown lp:lp .recently-used .gnome .gnome2 .gnome2_private

Reports

Create a CUPS printer:
- Device = file:/dev/null
- Type = Raw Print Queue
Go to the /etc/cups/interfaces/ directory

Create a file of the same name as the newly created CUPS printer

export DISPLAY=<Required X11 display>
TEMPFILE=/tmp/`basename $0`.$$
cat $6 > $TEMPFILE.1
cat $TEMPFILE.1 | mpage -1 -o -ba4 > $TEMPFILE.2
cat $TEMPFILE.2 | gs -q -sDEVICE=pswrite -sPAPERSIZE=a4 -dNOPAUSE -dBATCH -sOutputFile=$TEMPFILE.3 -
/usr/bin/ggv --display=$DISPLAY $TEMPFILE.3

Create a Control printer
- Text Printer = Y
- Type = Form Printer
Set the required terminal record to use the new "printer"
```
teaad
```

Dockets

Create a CUPS printer:
- Device = file:/dev/null
- Type = Raw Print Queue
Go to the /etc/cups/interfaces/ directory

* Create a file with the same name as the newly created CUPS printer

export DISPLAY=<_Required_X11_Display_>
TEMPFILE=/tmp/`basename $0`.$$
LOGO=/etc/cups/interfaces/<_Docket_Logo_>.epsi
cat $6 > $TEMPFILE.1
cat $TEMPFILE.1 | mpage -1 -o -ba4 > $TEMPFILE.2
/usr/bin/pstops 0\(0cm,-3cm\) $TEMPFILE.2 $TEMPFILE.3
cat $TEMPFILE.3 | cat $LOGO - >$TEMPFILE.4
cat $TEMPFILE.4 | gs -q -sDEVICE=pswrite -dNOPAUSE -dBATCH -dDEVICEXRESOLUTION=90 -dDEVICEYRESOLUTION=90 -sOutputFile=$TEMPFILE.5 -
/usr/bin/ggv --display=$DISPLAY $TEMPFILE.5

* Create a Control printer
- Text Printer = Y
- Type = Form Printer
Set the required terminal record to use the new "printer"
```
teaad
```

Overlays

Create a CUPS printer:
- Device = file:/dev/null
- Type = Raw Print Queue
Go to the /etc/cups/interfaces/ directory
Create a copy of the overlay script.

Add the following lines:

export DISPLAY=<_Required_X11_Display_>
...
<_Body_of_Overlay_Script_>
...
gs -sDEVICE=pswrite -sPAPERSIZE=a4 -dNOPAUSE -dBATCH -sOutputFile=$TEMPFILE.final $TEMPFILE.*.ps
/usr/bin/ggv --display=$DISPLAY $TEMPFILE.final
#cat $TEMPFILE.final

Create a Control printer
- Text Printer = Y
- Type = Form Printer
Set the required terminal record to use the new "printer"
```
teaad
```