1: # The LearningOnline Network with CAPA
2: # random labelling tool
3: #
4: # $Id: randomlabel.pm,v 1.55 2004/01/08 20:28:20 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # 7/20/2001 Isaac Tsai, initial syntax
29: # 8/10/2001 Isaac Tsai,
30: # 8/30/2001 Isaac Tsai,
31: # SYNTAX:
32: # <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
33: # <labelgroup name="GroupOne" type="image">
34: # <location x="123" y="456" />
35: # <location x="321" y="654" />
36: # <location x="213" y="546" />
37: # <label description="TEXT-1">IMG-URL</label>
38: # <label description="TEXT-2">IMG-URL</label>
39: # <label description="TEXT-3">IMG-URL</label>
40: # </labelgroup>
41: # <labelgroup name="GroupTwo" type="text">
42: # <location x="12" y="45" />
43: # <location x="32" y="65" />
44: # <location x="21" y="54" />
45: # <label>TEXT-1</label>
46: # <label>TEXT-2</label>
47: # <label>TEXT-3</label>
48: # </labelgroup>
49: # </randomlabel>
50: # ===========================================
51: # side effect:
52: # location (123,456): $GroupOne[0] = 2 # images give out indexes
53: # (321,654): $GroupOne[1] = 1
54: # (213,546): $GroupOne[2] = 0
55: # location (12,45) : $GroupTwo[0] = "TEXT-3"
56: # (32,65) : $GroupTwo[1] = "TEXT-1"
57: # (21,54) : $GroupTwo[2] = "TEXT-2"
58: # ===========================================
59: package Apache::randomlabel;
60: use Apache::lonnet;
61: use strict;
62: use Apache::edit;
63: use Apache::File();
64: use Apache::Constants qw(:common :http);
65:
66: my %args;
67: my $cgi_id;
68:
69: BEGIN {
70: &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
71: }
72:
73: sub check_int {
74: # utility function to do error checking on a integer.
75: my ($num,$default) = @_;
76: $default = 100 if (! defined($default));
77: $num =~ s/\s+//g; # We dont need no stinkin white space!
78: # If it is a real, just grab the integer part.
79: ($num,undef) = split (/\./,$num) if ($num =~ /\./);
80: # set to default if what we have left doesn't match anything...
81: $num = $default unless ($num =~/^\d+$/);
82: return $num;
83: }
84:
85: sub start_randomlabel {
86: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
87: my $result='';
88: push (@Apache::lonxml::namespace,'randomlabel');
89: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
90: if ( $bgimg !~ /^http:/ ) {
91: $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
92: if (&Apache::lonnet::repcopy($bgimg) ne OK) {
93: $bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
94: }
95: }
96: my $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval));
97: my $h= &check_int(&Apache::lonxml::get_param('height',$parstack,$safeeval));
98: my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1));
99: if (!$texwidth) { $texwidth=90; }
100: $Apache::randomlabel::tlabel_cnt=0;
101: $Apache::randomlabel::ilabel_cnt=0;
102: if ($target eq 'web') {
103: $cgi_id=&Apache::loncommon::get_cgi_id();
104: %args=();
105: $args{"cgi.$cgi_id.BGIMG"}=&Apache::lonnet::escape($bgimg);
106: } elsif ($target eq 'tex') {
107: my $newbgimg = $bgimg;
108: $bgimg=~s/\.(gif|jpg|png|jpeg)$/\.eps/i;
109: $bgimg= &Apache::lonnet::filelocation($bgimg);
110: $bgimg=~s|http:/[^/]*//home/httpd/html|;
111: $bgimg=~s|/$||;
112: #if no eps file try to replicate it
113: if (not-e $bgimg) {
114: if (&Apache::lonnet::repcopy($bgimg) ne OK ) {
115: #if replication failed try to find ps file
116: $bgimg=~s/\.eps$/\.ps/;
117: #if no ps file try to replicate it
118: if (not -e $bgimg &&
119: &Apache::lonnet::repcopy($bgimg) ne OK) {
120: #if replication failed try to produce eps file dynamically
121: $bgimg=~s/\.ps$/\.eps/;
122: my $temp_file;
123: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
124: $temp_file = Apache::File->new('>>'.$filename);
125: $newbgimg =~ s|(.*)/res/|/home/httpd/html/res/|;
126: print $temp_file "$newbgimg\n";
127: $bgimg=~s|/home/httpd/html/res|/home/httpd/prtspool|;
128: $bgimg=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
129: }
130: }
131: }
132: $bgimg=~s|/$||;
133: my $dirtywidth=$texwidth+5;
134: $result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{ \noindent \epsfxsize='.
135: $texwidth.' mm \epsffile{'.$bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.
136: $texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
137: } elsif ($target eq 'edit') {
138: $result.=&Apache::edit::tag_start($target,$token);
139: $Apache::edit::bgimgsrc=
140: &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
141: $Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
142: $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
143: $result.=&Apache::edit::browse('bgimg').' ';
144: $result.=&Apache::edit::search('bgimg').'<br />'.
145: &Apache::edit::text_arg('Width(pixel):' ,'width' ,$token,6).
146: &Apache::edit::text_arg('Height(pixel):','height' ,$token,6).
147: &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
148: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
149: } elsif ($target eq 'modified') {
150: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
151: $safeeval,'bgimg','width',
152: 'height','texwidth');
153: if ($constructtag) {
154: $result = &Apache::edit::rebuild_tag($token);
155: $result.=&Apache::edit::handle_insert();
156: }
157: }
158: return $result;
159: }
160:
161: sub end_randomlabel {
162: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
163: my $result='';
164: my $count;
165: pop @Apache::lonxml::namespace;
166: if ($target eq 'web') {
167: $count = $Apache::randomlabel::tlabel_cnt;
168: if( $count != 0) { $args{"cgi.$cgi_id.COUNT"}=$count; }
169: $count = $Apache::randomlabel::ilabel_cnt;
170: if( $count != 0) { $args{"cgi.$cgi_id.ICOUNT"}=$count; }
171: $result.='<img src="/adm/randomlabel.png?token='.$cgi_id.'" /><br />'."\n";
172: &Apache::lonnet::appenv(%args);
173: } elsif ($target eq 'tex') {
174: $result='\end{picture}\\\\';
175: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
176: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
177: my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1));
178: if (!$texwidth) { $texwidth=90; }
179: my $howtoskipback = $texwidth*$height/$width;
180: $result.= ' \vskip -'.$howtoskipback.' mm } \\\\ ';
181: } elsif ($target eq 'edit') {
182: $result.=&Apache::edit::end_table;
183: }
184: return $result;
185: }
186:
187: sub adjust_textwidth {
188: my $texwidth=shift;
189: my $pagewidth=$ENV{'form.textwidth'};
190: $pagewidth=~s/\s*mm\s*$//;
191: if ($texwidth>$pagewidth) {$texwidth=$pagewidth;}
192: return $texwidth;
193: }
194:
195: sub start_labelgroup {
196: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
197: my $result='';
198: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
199: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
200: $type =~tr/A-Z/a-z/;
201: if ($target ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) {
202: &Apache::lonxml::error("Only _ a-z A-Z and 0-9 are allowed in the name to a labelgroup, and the first character can not be a number.<br />");
203: }
204: if ($target eq 'web' || $target eq 'tex' ||
205: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
206: $Apache::randomlabel::groupname=$name;
207: $Apache::randomlabel::type=$type;
208: @Apache::randomlabel::xcoord = ();
209: @Apache::randomlabel::ycoord = ();
210: @Apache::randomlabel::value = ();
211: @Apache::randomlabel::label_arr = ();
212: @Apache::randomlabel::decription = ();
213: } elsif ($target eq 'edit') {
214: $result.=&Apache::edit::tag_start($target,$token);
215: $result.=&Apache::edit::text_arg('Name:','name',$token).
216: &Apache::edit::select_arg('Type:','type',['text','image'],$token).
217: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
218: } elsif ($target eq 'modified') {
219: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
220: $safeeval,'name','type');
221: if ($constructtag) {
222: $result = &Apache::edit::rebuild_tag($token);
223: $result.=&Apache::edit::handle_insert();
224: }
225: }
226: return $result;
227: }
228:
229: sub add_vars {
230: my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
231: my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
232: my $out=Apache::run::run($code,$safeeval);
233: if ($value) {
234: $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
235: $out=Apache::run::run($code,$safeeval);
236: $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
237: $out=Apache::run::run($code,$safeeval);
238: }
239: if ($image) {
240: my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
241: my $out=Apache::run::run($code,$safeeval);
242: }
243: $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
244: $out=Apache::run::run($code,$safeeval);
245: }
246:
247: # begin to assign labels to locations
248: sub end_labelgroup {
249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
250: my $gname = $Apache::randomlabel::groupname;
251: my $type = $Apache::randomlabel::type;
252: my $result='';
253: if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
254: $target eq 'analyze') {
255: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
256: &Apache::structuretags::shuffle(\@idx_arr);
257: for(0 .. $#Apache::randomlabel::label_arr) {
258: my $str;
259: my $xstr;
260: my $ystr;
261: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
262: my $x = $Apache::randomlabel::xcoord[$_];
263: my $y = $Apache::randomlabel::ycoord[$_];
264: my $value = $Apache::randomlabel::value[$_];
265: if( $type eq 'text') {
266: &add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
267: $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
268: $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
269: $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
270: $Apache::randomlabel::tlabel_cnt += 1;
271: } elsif ( $type eq 'image') {
272: &add_vars($gname,$_,
273: $Apache::randomlabel::description[$idx_arr[$_]],
274: $idx_arr[$_],$value,$label,$safeeval);
275: $str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
276: $xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
277: $ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
278: $Apache::randomlabel::ilabel_cnt += 1;
279: } else {
280: &Apache::lonxml::error('Unknown type of label :'.$type.':');
281: }
282: if ($target eq 'web') {
283: $args{"cgi.$cgi_id.$str"} =&Apache::lonnet::escape($label);
284: $args{"cgi.$cgi_id.$xstr"}=$x;
285: $args{"cgi.$cgi_id.$ystr"}=$y;
286: }
287: }
288: } elsif ($target eq 'tex') {
289: my $WX1=0; # Web x-coord. of upper left corner (ULC)
290: my $WY1=0; # Web y-coord. of (ULC)
291: my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
292: my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
293: my $texwidth=&adjust_textwidth(&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2,1));
294: if (!$texwidth) { $texwidth=90; }
295: my $TX1=0;
296: my $TY1=$texwidth*($wheight/$wwidth);
297: my $TX2=$texwidth;
298: my $TY2=0;
299:
300:
301: my $slopex=($wwidth-$WX1)/($TX2-$TX1);
302: my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
303: my $cstx=$wwidth-$slopex*($TX2);
304: my $csty=$wheight-$slopey*($TY2);
305:
306: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
307: &Apache::structuretags::shuffle(\@idx_arr);
308:
309: &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
310: for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
311: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
312: my $x = $Apache::randomlabel::xcoord[$i];
313: my $y = $Apache::randomlabel::ycoord[$i];
314: my $value = $Apache::randomlabel::value[$i];
315: #x latex coordinate
316: my $tcX=($x)*($texwidth/$wwidth);
317: #y latex coordinate
318: # my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
319: my $tcY=$TY1-$y*($TY1/$wheight);
320: $tcX=sprintf('%.2f',$tcX);
321: $tcY=sprintf('%.2f',$tcY);
322: $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
323: if( $type eq 'text') {
324: &add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
325: } elsif ( $type eq 'image') {
326: &add_vars($gname,$i,
327: $Apache::randomlabel::description[$idx_arr[$i]],
328: $idx_arr[$i],$value,$label,$safeeval);
329: } else {
330: &Apache::lonxml::error('Unknown type of label :'.$type.':');
331: }
332: }
333: } elsif ($target eq 'edit') {
334: $result.=&Apache::edit::end_table;
335: }
336: return $result;
337: }
338:
339: # <location x="123" y="456" value="some value"/>
340: sub start_location {
341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
342: my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
343: my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
344: my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
345: my $result='';
346: push(@Apache::randomlabel::xcoord,$x);
347: push(@Apache::randomlabel::ycoord,$y);
348: push(@Apache::randomlabel::value,$value);
349: if ($target eq 'edit') {
350: $result.=&Apache::edit::tag_start($target,$token);
351: $result.=&Apache::edit::text_arg('X:','x',$token,4).
352: &Apache::edit::text_arg('Y:','y',$token,4).
353: &Apache::edit::entercoords('x','y','attribute','width','height').' '.
354: &Apache::edit::text_arg('Value:','value',$token).
355: &Apache::edit::end_row();
356: $result.=&Apache::edit::end_table;
357: } elsif ($target eq 'modified') {
358: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
359: $safeeval,'x','y','value');
360: if ($constructtag) {
361: $result = &Apache::edit::rebuild_tag($token);
362: $result.=&Apache::edit::handle_insert();
363: }
364: }
365: return $result;
366: }
367:
368: sub end_location {
369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
370: my @result;
371: if ($target eq 'edit') { @result=('','no') }
372: return @result;
373: }
374:
375: # <label>$var_abc</label>
376: sub start_label {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
378: my $result='';
379: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
380: if ($target eq 'web' || $target eq 'tex' ||
381: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
382: my $ltext=&Apache::lonxml::get_all_text("/label",$parser);
383: $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
384: if ($type eq 'image') {
385: &Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]");
386: $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
387: $ltext);
388: &Apache::lonxml::debug("into $ltext");
389: my $description = &Apache::lonxml::get_param('description',
390: $parstack,$safeeval);
391: push(@Apache::randomlabel::description,$description);
392: }
393: push(@Apache::randomlabel::label_arr,$ltext);
394: } elsif ($target eq 'edit') {
395: $result.=&Apache::edit::tag_start($target,$token,"$type Label");
396: my $text=&Apache::lonxml::get_all_text("/label",$parser);
397: if ($type eq 'image') {
398: $result.=&Apache::edit::end_row().
399: &Apache::edit::start_spanning_row();
400: $result.=&Apache::edit::text_arg('Description:','description',
401: $token);
402: }
403: if ($type eq 'text') { $result.="Label Text:"; }
404: if ($type eq 'image') { $result.="Path to image: "; }
405: $result.=&Apache::edit::editline('',$text,'',50).
406: &Apache::edit::end_table();
407: } elsif ($target eq 'modified') {
408: $result = '<label>';
409: if ($type eq 'image') {
410: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
411: $safeeval,
412: 'description');
413: if ($constructtag) {
414: $result = &Apache::edit::rebuild_tag($token);
415: } else {
416: $result = $token->[4];
417: }
418: }
419: $result.=&Apache::edit::modifiedfield("/label",$parser);
420: }
421: return $result;
422: }
423:
424: sub end_label {
425: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
426: my @result;
427: if ($target eq 'edit') { @result=('','no') }
428: return @result;
429: }
430:
431: 1;
432: __END__
433:
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