CVS log for loncom/homework/randomlabel.pm

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- Course "Authoring" Space
  "Import a File" and "Image" blocks in Colorful Editor include a "Choose File"
  link which allows selection of published files from "Course Authoring" Space,
  or upload of a new file (with auto-publication).

- Use perlvar instead of static string: /home/httpd/html.

- Bug 6208.
 - Replace new paragraph after image with new line after image to prevent
   LaTeX error when printing randomly labelled image inside a table.

_ Backport 1.94.

- Regular Expression for both http and https.
- Use lonnet::absolute_url() when adding protocol in randomlylabel.pm

POD documentation changes

Added/updated/converted POD. Many files had their POD redone to new standards.

Change arguments accepted by lonnet::appenv() to:
1. reference to hash
2. (optional) reference to array.

Change all instances where lonnet::appenv() is called to replace first argument passed (originally a hash) to a reference to the hash.

- Modify lonnet.pm rev 1.35 code intended to prevent "dangerous" modifications of the environment, so it will actually do this.
- Allow these modifications to be made in certain instances:
   DC switching to adhoc role
   CC switching to a different course role in the current course.
   user self-enrolling as a student

- BUG#5484, don't inster extra WS inside <label>

	Browse only image files in search for random labeled images.

- lonxml takes care of all insertions now, and thus the tags that were attempting to handle it themselves could cause double insertions so elimnate external insertion calls

Straighten out width/height and add an appropriate X axis adjust too

BZ 5020.. somewhere in the midst of things width/height got switched..
but only partially... this fixes the problem, by consistently switching
width/height, but I need to still go back and make height/width unswitched.

- some style
- eliminate uneeded vars
- LaTReX doesn't like spaces in paths either...

Factor out ' ' -> '_' substitution when doing print
preparation of images.

Defect number 2975  - Replace " " with "_" in image filenames so that
LaTeX does not get pissed off.

&Apache::lonnet::unescape -> &unescape
&Apache::lonnet::escape -> &escape

- finish off the conversion to allowing style tags get_all_text across tags
- BUG#4428

- the 3.5 offset should only be used when dealing with text

- image style random label images weren't being drawn in th correct location (the ararently are drawn up from the point they are placed at)

- it was ISE ing on a divide by zero if width/height was unspecfied

Decode gnuplot given that in tex mode we get sizing information as
a leading comment and in web mode we can scale by decoding the img tag.

Use gnuplot callbacks to determine if the bkg image was gnuplot.
This is more reliable than attempting to decode the produced stuff (I hope).

Support correct placement of labels on gnuplot images for both web and
print targets.  (defect 3928).

Get gnuplot to print.. Looks ok, but I need to test label placement
more thoroughly.

Start getting support for gnuplot images as bgimg's still need to get scaling
exactly right so labels get placed where they are supposed to go.

Add correct image scaling to labels so that they don't look out of proportion
on 'tex' target.

Got image labels to paste on printouts.  Need to still figure out scaling.

At least it attempts to insert label images. Need to take the image and
convert it to, or queue it to convert to an .eps however..as now i've
got it trying to directly include e.g. .jpg's which LaTeX has no
love for.

Clean up the output of clean_up_image to prevent latex failure..
now we have a label that has a url.. of the broken logo...

Fix a little typo and also try to make the raw LaTeX a bit more readable at
start of picture... more to come

- ENV -> env

lonnet::repcopy() and lonnet::repcopy_userfile() now return strings, with simplified lower-case-only responses, for consistency with other return values from lonnet functions.

lonnet::repcopy() and lonnet::repcopy_userfile() now return strings rather than constants defined in Apache::Constants.  This allows lonnet::repcopy() to be used for cloning in batch course creation run from a command line script.  If Apache::Constants are to be returned by PerlHandlers these should be set in the appropriate handler rather than in subroutines in lonnet called by the handler, based on the string response from lonnet::repcopy().

- trying to make all of the eps image getting gernation etc have a common body of code between <randomlabel>'s bgimg, <img> and <imageresponse>'s <image>

- allow font size on randomlabel images to be adjusted BUG#3624

- BUG #3518 randomlabel TeX and Web the letter showed up in sligtly different locations

- BUG#3136, returns in <label>s cause a 'vt' to appear in the label
- <labelgourp>s with out a name blew things up, now is just doesn't set the variables up

- ignore undefined bgimg

- wroks correctly with new randomlylabel mechanism

- remove some debug

- supports a <bgimg> inside <randomlabel>
- supports <bgimg><labels> having <gnuplots> inside  (and probably <randomlabel>)

Removing syntax error.

- trying to make the regexps readable

Bug 2434 (images not converted when printing from construction space) is fixed. This bug is about randomly labeled problems and it's different then 2521.

- modified to use the cgi.$id. mechanism

- BUG#1974, <textarea>s delete the initial linefeeds if they exist, now checks old value and preserves the \n from the old value if it had been there.

Bug 2287 (automatic eps generation needs to preserves paths) is corrected for randomlabel problems. The only issue remains - how to individualize the name of eps file. It is neccessary if more then one student is trying to print the same problem at the same time and this problem contains different pictures with the same generic name. But may be this is impossible situation.

Bug 2221 (click on image problems don't properly scale image) is fixed. Additional cleanup is done too.

- texwidth and TeXwidth should work in randomlabel
- default to 90 if no texwidth specified rather than blowing up

- the labelgroup name is a variable name, so we need to make sure they make good variable names

- retabinate

- this was never committed (BUG#1855)
- start on next line after randomlabel image (just like on web)

Bug connected with LaTeX error for printing randomlabel template (with happy face) is fixed. I've just removed a few lines which I've forgetten to remove far long ago when I wrote chunck of code for dynamical creation of eps counterpart of jpg/gif/png original picture. Sorry for this and it's really strange that nobody has noticed this bug earlier.

Fix Browse and Search to target id_curdepth instead of curdepth.id (???)
in attribute mode.

Enable clickable coordinate input.

- get_all_text() really wants to see the entire stack of parsers now, that way style redefinitons of tags can do a get_all_text across styl def boundaries.

randomlabel.pm did not replicate the file (part of Bug #1187).
Calls repcopy now. Delivers "broken" image if file could not be replicated
for some reason.
Side fix:
Users had problems with foo.GIF as background image. Made regular expressions
case-insensitive.

Bug 1025 is fixed. png format is added to randomlabelling problems.

- converted to use new handler based mechanism

- <randomlabel> online now server generated on the file rather than use Java
  (Maybe make it a runtime switchable item?)
- doesn't yet support subimage <randomlabel>
- (need to support fontsize selection)

Fixed bug where list environment was in conflict with picture environment.

- adding analyze to more tags in preperation for analyzing a problems answer distribution

Now 1. Checks either original eps file exist on the current library server
       and use it if exist.
    2. Replicates eps file from owner's library server if it is absent on
       current library server.
    3. If replication fails it tries to find ps file on current library
       server (Ed has a lot of such files) and use it.
    4. Replicates ps file from owner's library server.
    5. If replication fails eps is dynamically originated.

Added replication of eps. picture in the case if original eps does not exist on current library server.

Changed algorithm for placing labels and converting width of the box.
In addition now picture is adjusted to the left side of the page.

Fixed a bug in previous version. If you split the picture environment in latex (going to the next page) you destroy the coordinate system and all lables will
be put in a wrong place.

Changed parameter for better adjustment of the blank space.

Now 1. Correctly reproduce random labelling;
    2. Automatically adjust size of the original eps picture
       to the LaTeX picture environment;
    3. Automatically remove blank space after images (does not matter
       of the size of this blank space).

Empty space after figs was removed, labels were shifted to the left.

Restored correct printing after Guy's corrections.

- variables added to safespace for random image problems
- BUG#67 almost done, just needs priting support

- (description applies to last commit too)
- Implements the support for images labels in a randomlabel  image BUG#67
   - displays
   - edits

  -doesn't work
    - needs <allow>s generated
    - needs to let students see the images
    - printing

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 shifted symbols to the left on eps figs.

removed an empty space after figures + small changes + changes in the path to eps files

Sanity checking on all those integers.

- editline doesn't need a 5th parameter
- label text should be a single line

- need to pop the namespace when done

- randomlabel tags now exist only in the randomlabel namespace

- no need for the global

Added call to &Apache::edit::search().

Fixed a silly crashing error - please remember to check when dividing;
You never know when you will find a zero.

corrected algorithm for calculating coordinates, added one Global in this module variable

Changes to use new browse function for 'bgimg' in random label problems.

- need to evaluate labels for variable references (Fixes BUG#43)

redoing from 1.11

now can be printed

Changes associated with reworking edit::modifiedfield().

changing "sub BEGIN" to "BEGIN"

Update to use edit::end_row() and edit::start_spanning_row() as a cleanup
for edit::select_arg and edit::select_or_text_arg.

- GPL headers

- makes proper references in contruction space to images

- handels bgimg references properly
- generates proper extlink references for the image and the java applet

- added the ability to associate values with locations on a randomly labeled
  image

- renders text labelgroups to the web and tex targets well
- renders image labelgroups to web and tex poorly
- edit of <randomlabel>, <labelgroup>, <label>, <location> working well.

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