[juneau-lug] Re: webify jpeg script

  • From: Jamie <jamie@xxxxxxxxxxxxxxxxx>
  • To: juneau-lug@xxxxxxxxxxxxx
  • Date: Sun, 16 Mar 2008 18:39:12 -0800

Hello James,

Long time no hear.  Are you back home for a while? 

I didn't quit get what your goal is with this script.  If you just want 
to view jpg's locally why not use one of the many existing viewers that 
will auto-size them to your screen and why bother with html?  What am I 
missing here?

For web viewing, you may be interested in seeing another solution.  SCRY 
http://scry.org/ is nice and simple.  23k to download.  It uses GD lib 
for image manipulation and creates a thumbnail and intermediate size 
image on demand but caches them for future speed.  You organize your 
images by directory.  So updating your web pages is as simple as adding 
a image file (or symlink) into the structure.  Setup is fast (they claim 
2 minutes).

As it comes, SCRY doesn't do comments.  But it is able to report out 
exif data and exif data can contain a comment (limited to 256 chars, I 
think).  So I tweaked the code to have it display the embedded comment 
and that works fine. 

What other projects you working on these days?

-Jamie

James Zuelow wrote:
> I have a small script I use to resize jpeg images and put them into html 
> wrappers with comments.  I am in tweak mode, so version 0.4 of the script 
> will feature a big warning telling the user that jpeg images in the current 
> directory will be permanently resized (I chattr +i all of my images, but 
> other users might be upset when they reduce all of their photos to 800x600), 
> allow user entered comments for the index page (currently I just edit it with 
> vi after running the script) and user entered alternate text for images 
> (currently it just uses the image name as alternate text).  
>
> I thought it would be a good idea to also make the script a bit more 
> portable.  
> As I am a KDE fanboy, it is set up for KDE only.  Since my bandwidth isn't so 
> hot, I don't want to pull Gnome down for testing.
>
> So questions for the group:
>
> 1) How would one determine whether you are running KDE or Gnome from a bash 
> script running in an xterm?  Since a user could have both installed, checking 
> for files wouldn't work, and you can start KDE from gdm and Gnome from kdm, 
> so checking which is running won't work either.  I suppose checking for a 
> running instance of kdesktop or kdeinit would work for KDE, as long as the 
> user only has one session open.  But I can have multiple sessions open with 
> different GUIs and I only want to know which environment the script is being 
> run in.
>
> 2) What is a Gnome equivalent to this line:
>
> kstart --type Tool display ${newimage} 2> /dev/null
>
> kstart is part of KDE.  /usr/bin/display is part of imagemagick.  What kstart 
> is doing is pulling up display in tool mode, so that it does not grab focus 
> from the xterm window.   The user is expected to enter comments about the 
> photos, and I didn't like having to click on the xterm when the script pulled 
> up a viewer.  Output from display goes to /dev/null to keep it from echoing 
> stuff to the xterm the script is running in. The user should just need to 
> type a comment, hit enter, and the photo will change to the next one while 
> the script waits for the user to input text for the new photo.  Very quick 
> and easy. 
>
> Does Gnome have a similar tool or syntax that can open display without giving 
> it focus with the mouse and keyboard?  (Please test any possible solutions -- 
> the KDE manpages all refer to a "--nograb" option for starting apps in KDE 
> that allegedly prevents the newly opened app from grabbing focus.  But it 
> never seemed to work that way.  I always needed to click back onto the xterm 
> window, taking my hands off of the keyboard.)
>
> Anyhow, here is the current 0.3 version.  Yes, I know it isn't the most 
> elegant solution.  I tend to brute force my scripts.
>
> ----------------------------------------------------------------------------------------------------------
> beware of lines wrapping if you copy & paste.  Each line begins with 
> whitespace.
> ----------------------------------------------------------------------------------------------------------
>
>  #!/bin/bash
>  #################################################
>  # webify.sh 0.3
>  # simply puts an html wrapper around jpegs that
>  # will be resized to 800x600 (or 600x800) with
>  # mogrify and displayed with display.
>  # Depends on ImageMagick and KDE.
>  # this version does not link to external websites
>  # but could be modified to do so.
>  # James Zuelow // Juneau Linux User's Group
>  # Camp Mike Spann, Afghanistan August 31 2007
>  # v0.3 September 12 2007
>  ################################################
>  nojpeg(){
>         echo "     No jpegs found!"
>         exit
>  }
>  echo "     Ensure your photos are jpegs, and that their orientation is 
> correct."
>  echo "     Your photos will be ordered however the ls command orders them."
>  echo "     To escape the script, just hit enter when prompted for a base 
> image name."
>  echo "     ---"
>  echo "Checking for jpeg files.  Script will exit if none found."
>  ls . | grep -i .jpg &> /dev/null || nojpeg
>  (( i = 101 ))
>  (( j = 101 ))
>  (( k = 0 ))
>  (( l = 0 ))
>  echo -n "Enter base image name: "
>  read basename
>  if [ -z "${basename}" ]
>  then
>         echo "Quitting"
>         exit
>  fi
>  for oldimage in `ls . | grep -i .jpg`
>  do
>         mv ${oldimage} ${basename}-${i}.jpg
>         (( i++ ))
>  done
>  (( m = i - 1 ))
>  echo -n "     Sizing images:"
>  for sizetarget in `ls *.jpg`
>  do
>         mogrify -resize @480000 ${sizetarget}
>         echo -n "."
>  done
>  echo -e "\nDone resizing."
>  echo "<HTML><HEAD>" > index.html
>  echo "<META HTTP-EQUIV=\"CONTENT-TYPE\" CONTENT=\"text/html\">" >> index.html
>  echo "<TITLE>${basename} index</TITLE>" >> index.html
>  echo "<!webify.sh 0.3 James Zuelow // Juneau Linux Users Group Aug-Sep 07 // 
> MeS Afghanistan></HEAD>" >> index.html
>  echo "<BODY bgcolor=\"#000000\" text=\"#ffff99\">" >> index.html
>  echo "<CENTER>" >> index.html
>  echo "<A HREF=\"${basename}-101.html\">Start Show</A>" >> index.html
>  echo "</CENTER></BODY></HTML>" >> index.html
>  for newimage in `ls *.jpg`
>  do
>         prv=""
>         nxt=""
>         echo "<HTML><HEAD>" > ${basename}-${j}.html
>         echo "<META HTTP-EQUIV=\"CONTENT-TYPE\" CONTENT=\"text/html\">" >> 
> ${basename}-${j}.html
>         echo "<TITLE>${basename} ${j}</TITLE>" >> ${basename}-${j}.html
>         echo "<!webify.sh 0.3 James Zuelow // Juneau Linux Users Group 
> Aug-Sep 
> 07 // MeS Afghanistan></HEAD>" >> ${basename}-${j}.html
>         echo "<BODY bgcolor=\"#000000\" text=\"#ffff99\">" >> 
> ${basename}-${j}.html
>         echo "<CENTER>" >> ${basename}-${j}.html
>         if [ $j -ne 101 ]
>         then
>                 (( k = j - 1 ))
>                 prv="<A HREF=\"${basename}-${k}.html\">Previous</A>"
>         fi
>         if [ $j -lt $m ]
>         then
>                 (( l = j + 1 ))
>                 nxt="<A HREF=\"${basename}-${l}.html\">Next</A>"
>         fi
>         echo "<P>${prv} ${nxt}</P>" >> ${basename}-${j}.html
>         echo "<IMG SRC=\"${newimage}\" ALT=\"${newimage}\">" >> 
> ${basename}-${j}.html
>         kstart --type Tool display ${newimage} 2> /dev/null
>         echo -n "Enter comment for ${newimage}: "
>         read comment
>         echo "<P>${comment}</P>" >> ${basename}-${j}.html
>         echo "<BR><BR><BR><HR WIDTH=\"50%\"><CITE>James Zuelow 2007</CITE><HR 
> WIDTH=\"25%\">" >> ${basename}-${j}.html
>         echo "</BODY></HTML>" >> ${basename}-${j}.html
>         killall display &> /dev/null
>         (( j++ ))
>  done
> ------------------------------------
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-- 
Browns Homepage - new pics 20 Jan 2008 - http://jdb.homelinux.net
--
Registered Linux User No: 187845  http://counter.li.org/

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