1: # The LearningOnline Network with CAPA
2: # random labelling tool
3: #
4: # $Id: randomlabel.pm,v 1.48 2003/09/08 19:17:34 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) : $GroupTwo[2] = "TEXT-2"
58: # ===========================================
59: package Apache::randomlabel;
60: use Apache::lonnet;
61: use strict;
62: use Apache::edit;
63: use Apache::File();
64: use Apache::Constants qw(:common :http);
65:
66: BEGIN {
67: &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
68: }
69:
70: sub check_int {
71: # utility function to do error checking on a integer.
72: my ($num,$default) = @_;
73: $default = 100 if (! defined($default));
74: $num =~ s/\s+//g; # We dont need no stinkin white space!
75: # If it is a real, just grab the integer part.
76: ($num,undef) = split (/\./,$num) if ($num =~ /\./);
77: # set to default if what we have left doesn't match anything...
78: $num = $default unless ($num =~/^\d+$/);
79: return $num;
80: }
81:
82: sub start_randomlabel {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
84: my $result='';
85: push (@Apache::lonxml::namespace,'randomlabel');
86: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
87: if ( $bgimg !~ /^http:/ ) {
88: $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
89: if (&Apache::lonnet::repcopy($bgimg) ne OK) {
90: $bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
91: }
92: }
93: my $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval));
94: my $h= &check_int(&Apache::lonxml::get_param('height',$parstack,$safeeval));
95: my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
96: $Apache::randomlabel::tlabel_cnt=0;
97: $Apache::randomlabel::ilabel_cnt=0;
98: if ($target eq 'web') {
99: &Apache::lonxml::startredirection();
100: $result.="BGIMG=".&Apache::lonnet::escape($bgimg);
101: } elsif ($target eq 'tex') {
102: my $newbgimg = $bgimg;
103: $bgimg=~s/\.(gif|jpg|png|jpeg)$/\.eps/i;
104: $bgimg= &Apache::lonnet::filelocation($bgimg);
105: $bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
106: $bgimg=~s/\/$//;
107: #if no eps file try to replicate it
108: if (not-e $bgimg) {
109: if (&Apache::lonnet::repcopy($bgimg) ne OK ) {
110: #if replication failed try to find ps file
111: $bgimg=~s/\.eps$/\.ps/;
112: #if no ps file try to replicate it
113: if (not -e $bgimg &&
114: &Apache::lonnet::repcopy($bgimg) ne OK) {
115: #if replication failed try to produce eps file dynamically
116: $bgimg=~s/\.ps$/\.eps/;
117: my $temp_file;
118: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
119: $temp_file = Apache::File->new('>>'.$filename);
120: $newbgimg =~ s/(.*)\/res\//\/home\/httpd\/html\/res\//;
121: print $temp_file "$newbgimg\n";
122: $bgimg =~ m/\/([^\/]+)$/;
123: $bgimg = '/home/httpd/prtspool/'.$1;
124: }
125: }
126: }
127: $bgimg=~s/\/$//;
128: my $dirtywidth=$texwidth+5;
129: if ($texwidth==90) {
130: $result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{ \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
131: $bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
132: } else {
133: $result.='\vspace*{2mm}\noindent \parbox{'.$dirtywidth.' mm}{ \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
134: $bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')(0,-'.$texwidth*$h/$w.')';
135: }
136: } elsif ($target eq 'edit') {
137: $result.=&Apache::edit::tag_start($target,$token);
138: $Apache::edit::bgimgsrc=
139: &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
140: $Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
141: $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
142: $result.=&Apache::edit::browse('bgimg').' ';
143: $result.=&Apache::edit::search('bgimg').'<br />'.
144: &Apache::edit::text_arg('Width(pixel):' ,'width' ,$token,6).
145: &Apache::edit::text_arg('Height(pixel):','height' ,$token,6).
146: &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
147: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
148: } elsif ($target eq 'modified') {
149: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
150: $safeeval,'bgimg','width',
151: 'height','texwidth');
152: if ($constructtag) {
153: $result = &Apache::edit::rebuild_tag($token);
154: $result.=&Apache::edit::handle_insert();
155: }
156: }
157: return $result;
158: }
159:
160: sub end_randomlabel {
161: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
162: my $result='';
163: my $count;
164: pop @Apache::lonxml::namespace;
165: if ($target eq 'web') {
166: my $args=&Apache::lonxml::endredirection();
167: $args=~s/\s*&/&/g;
168: $args=~s/\s*$//;
169: $count = $Apache::randomlabel::tlabel_cnt;
170: if( $count != 0) { $args.= "&COUNT=$count"; }
171: $count = $Apache::randomlabel::ilabel_cnt;
172: if( $count != 0) { $args.= "&ICOUNT=$count"; }
173: my $token=$Apache::lonxml::curdepth.'_'.$$;
174: $result.='<img src="/adm/randomlabel.png?token='.$token;
175: $result.='" /><br />'."\n";
176: &Apache::lonnet::appenv(("imagerequest.$token"=>&Apache::lonnet::escape($args)));
177: } elsif ($target eq 'tex') {
178: $result='\end{picture}\\\\';
179: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
180: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
181: my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
182: my $howtoskipback = $texwidth*$height/$width;
183: $result.= ' \vskip -'.$howtoskipback.' mm } \\\\ ';
184: } elsif ($target eq 'edit') {
185: $result.=&Apache::edit::end_table;
186: }
187: return $result;
188: }
189:
190: sub start_labelgroup {
191: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
192: my $result='';
193: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
194: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
195: $type =~tr/A-Z/a-z/;
196: if ($target ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) {
197: &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 />");
198: }
199: if ($target eq 'web' || $target eq 'tex' ||
200: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
201: $Apache::randomlabel::groupname=$name;
202: $Apache::randomlabel::type=$type;
203: @Apache::randomlabel::xcoord = ();
204: @Apache::randomlabel::ycoord = ();
205: @Apache::randomlabel::value = ();
206: @Apache::randomlabel::label_arr = ();
207: @Apache::randomlabel::decription = ();
208: } elsif ($target eq 'edit') {
209: $result.=&Apache::edit::tag_start($target,$token);
210: $result.=&Apache::edit::text_arg('Name:','name',$token).
211: &Apache::edit::select_arg('Type:','type',['text','image'],$token).
212: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
213: } elsif ($target eq 'modified') {
214: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
215: $safeeval,'name','type');
216: if ($constructtag) {
217: $result = &Apache::edit::rebuild_tag($token);
218: $result.=&Apache::edit::handle_insert();
219: }
220: }
221: return $result;
222: }
223:
224: sub add_vars {
225: my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
226: my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
227: my $out=Apache::run::run($code,$safeeval);
228: if ($value) {
229: $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
230: $out=Apache::run::run($code,$safeeval);
231: $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
232: $out=Apache::run::run($code,$safeeval);
233: }
234: if ($image) {
235: my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
236: my $out=Apache::run::run($code,$safeeval);
237: }
238: $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
239: $out=Apache::run::run($code,$safeeval);
240: }
241:
242: # begin to assign labels to locations
243: sub end_labelgroup {
244: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
245: my $gname = $Apache::randomlabel::groupname;
246: my $type = $Apache::randomlabel::type;
247: my $result='';
248: if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
249: $target eq 'analyze') {
250: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
251: &Apache::structuretags::shuffle(\@idx_arr);
252: for(0 .. $#Apache::randomlabel::label_arr) {
253: my $str;
254: my $xstr;
255: my $ystr;
256: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
257: my $x = $Apache::randomlabel::xcoord[$_];
258: my $y = $Apache::randomlabel::ycoord[$_];
259: my $value = $Apache::randomlabel::value[$_];
260: if( $type eq 'text') {
261: &add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
262: $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
263: $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
264: $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
265: $Apache::randomlabel::tlabel_cnt += 1;
266: } elsif ( $type eq 'image') {
267: &add_vars($gname,$_,
268: $Apache::randomlabel::description[$idx_arr[$_]],
269: $idx_arr[$_],$value,$label,$safeeval);
270: $str = 'IMG'.$Apache::randomlabel::ilabel_cnt;
271: $xstr = 'IX'.$Apache::randomlabel::ilabel_cnt;
272: $ystr = 'IY'.$Apache::randomlabel::ilabel_cnt;
273: $Apache::randomlabel::ilabel_cnt += 1;
274: } else {
275: &Apache::lonxml::error('Unknown type of label :'.$type.':');
276: }
277: if ($target eq 'web') {
278: $result .= '&'. $str .'='.&Apache::lonnet::escape($label);
279: $result .= '&'. $xstr .'='.$x;
280: $result .= '&'. $ystr .'='.$y;
281: }
282: }
283: } elsif ($target eq 'tex') {
284: my $WX1=0; # Web x-coord. of upper left corner (ULC)
285: my $WY1=0; # Web y-coord. of (ULC)
286: my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
287: my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
288: my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
289: my $TX1=0;
290: my $TY1=$texwidth*($wheight/$wwidth);
291: my $TX2=$texwidth;
292: my $TY2=0;
293:
294:
295: my $slopex=($wwidth-$WX1)/($TX2-$TX1);
296: my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
297: my $cstx=$wwidth-$slopex*($TX2);
298: my $csty=$wheight-$slopey*($TY2);
299:
300: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
301: &Apache::structuretags::shuffle(\@idx_arr);
302:
303: &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
304: for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
305: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
306: my $x = $Apache::randomlabel::xcoord[$i];
307: my $y = $Apache::randomlabel::ycoord[$i];
308: my $value = $Apache::randomlabel::value[$i];
309: #x latex coordinate
310: my $tcX=($x)*($texwidth/$wwidth);
311: #y latex coordinate
312: # my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
313: my $tcY=$TY1-$y*($TY1/$wheight);
314: $tcX=sprintf('%.2f',$tcX);
315: $tcY=sprintf('%.2f',$tcY);
316: $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
317: if( $type eq 'text') {
318: &add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
319: } elsif ( $type eq 'image') {
320: &add_vars($gname,$i,
321: $Apache::randomlabel::description[$idx_arr[$i]],
322: $idx_arr[$i],$value,$label,$safeeval);
323: } else {
324: &Apache::lonxml::error('Unknown type of label :'.$type.':');
325: }
326: }
327: } elsif ($target eq 'edit') {
328: $result.=&Apache::edit::end_table;
329: }
330: return $result;
331: }
332:
333: # <location x="123" y="456" value="some value"/>
334: sub start_location {
335: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
336: my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
337: my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
338: my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
339: my $result='';
340: push(@Apache::randomlabel::xcoord,$x);
341: push(@Apache::randomlabel::ycoord,$y);
342: push(@Apache::randomlabel::value,$value);
343: if ($target eq 'edit') {
344: $result.=&Apache::edit::tag_start($target,$token);
345: $result.=&Apache::edit::text_arg('X:','x',$token,4).
346: &Apache::edit::text_arg('Y:','y',$token,4).
347: &Apache::edit::entercoords('x','y','attribute','width','height').' '.
348: &Apache::edit::text_arg('Value:','value',$token).
349: &Apache::edit::end_row();
350: $result.=&Apache::edit::end_table;
351: } elsif ($target eq 'modified') {
352: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
353: $safeeval,'x','y','value');
354: if ($constructtag) {
355: $result = &Apache::edit::rebuild_tag($token);
356: $result.=&Apache::edit::handle_insert();
357: }
358: }
359: return $result;
360: }
361:
362: sub end_location {
363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
364: my @result;
365: if ($target eq 'edit') { @result=('','no') }
366: return @result;
367: }
368:
369: # <label>$var_abc</label>
370: sub start_label {
371: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
372: my $result='';
373: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
374: if ($target eq 'web' || $target eq 'tex' ||
375: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
376: my $ltext=&Apache::lonxml::get_all_text("/label",$parser);
377: $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]);
378: if ($type eq 'image') {
379: &Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]");
380: $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
381: $ltext);
382: &Apache::lonxml::debug("into $ltext");
383: my $description = &Apache::lonxml::get_param('description',
384: $parstack,$safeeval);
385: push(@Apache::randomlabel::description,$description);
386: }
387: push(@Apache::randomlabel::label_arr,$ltext);
388: } elsif ($target eq 'edit') {
389: $result.=&Apache::edit::tag_start($target,$token,"$type Label");
390: my $text=&Apache::lonxml::get_all_text("/label",$parser);
391: if ($type eq 'image') {
392: $result.=&Apache::edit::end_row().
393: &Apache::edit::start_spanning_row();
394: $result.=&Apache::edit::text_arg('Description:','description',
395: $token);
396: }
397: if ($type eq 'text') { $result.="Label Text:"; }
398: if ($type eq 'image') { $result.="Path to image: "; }
399: $result.=&Apache::edit::editline('',$text,'',50).
400: &Apache::edit::end_table();
401: } elsif ($target eq 'modified') {
402: my $text=$$parser[-1]->get_text("/label");
403: $result = '<label>';
404: if ($type eq 'image') {
405: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
406: $safeeval,
407: 'description');
408: if ($constructtag) {
409: $result = &Apache::edit::rebuild_tag($token);
410: } else {
411: $result = $token->[4];
412: }
413: }
414: $result.=&Apache::edit::modifiedfield($token);
415: }
416: return $result;
417: }
418:
419: sub end_label {
420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
421: my @result;
422: if ($target eq 'edit') { @result=('','no') }
423: return @result;
424: }
425:
426: 1;
427: __END__
428:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to randomlabel.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework