1: # The LearningOnline Network with CAPA
2: # image click response style
3: #
4: # $Id: imageresponse.pm,v 1.26 2003/05/05 22:36:54 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:
29: #FIXME LATER assumes multiple possible submissions but only one is possible
30: #currently
31:
32: package Apache::imageresponse;
33: use strict;
34: use Image::Magick;
35:
36: BEGIN {
37: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
38: }
39:
40: sub start_imageresponse {
41: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
42: my $result;
43: #when in a radiobutton response use these
44: &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
45: push (@Apache::lonxml::namespace,'imageresponse');
46: my $id = &Apache::response::start_response($parstack,$safeeval);
47: if ($target eq 'meta') {
48: $result=&Apache::response::meta_package_write('imageresponse');
49: }
50: return $result;
51: }
52:
53: sub end_imageresponse {
54: &Apache::response::end_response;
55: pop @Apache::lonxml::namespace;
56: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
57: return '';
58: }
59:
60: %Apache::response::foilgroup=();
61: sub start_foilgroup {
62: %Apache::response::foilgroup=();
63: $Apache::imageresponse::conceptgroup=0;
64: &Apache::response::setrandomnumber();
65: return '';
66: }
67:
68: sub getfoilcounts {
69: my ($parstack,$safeeval)=@_;
70:
71: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
72: # +1 since instructors will count from 1
73: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
74: if (&Apache::response::showallfoils()) { $max=$count; }
75: return ($count,$max);
76: }
77:
78: sub whichfoils {
79: my ($max)=@_;
80: if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
81: my @names = @{ $Apache::response::foilgroup{'names'} };
82: my @whichopt =();
83: while ((($#whichopt+1) < $max) && ($#names > -1)) {
84: &Apache::lonxml::debug("Have $#whichopt max is $max");
85: my $aopt;
86: if (&Apache::response::showallfoils()) {
87: $aopt=0;
88: } else {
89: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
90: }
91: &Apache::lonxml::debug("From $#names elms, picking $aopt");
92: $aopt=splice(@names,$aopt,1);
93: &Apache::lonxml::debug("Picked $aopt");
94: push (@whichopt,$aopt);
95: }
96: return @whichopt;
97: }
98:
99: sub displayfoils {
100: my ($target,@whichopt) = @_;
101: my $result ='';
102: my $name;
103: my $temp=1;
104: foreach $name (@whichopt) {
105: $result.=$Apache::response::foilgroup{"$name.text"};
106: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
107: my $image=$Apache::response::foilgroup{"$name.image"};
108: if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
109: if ($target eq 'tex') {
110: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
111: } else {
112: $result.="<img src=\"$image\"/> <br />\n";
113: }
114: } else {
115: if ($target eq 'tex') {
116: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
117: } else {
118: $result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
119: }
120: }
121: $temp++;
122: }
123: return $result;
124: }
125:
126: sub gradefoils {
127: my (@whichopt) = @_;
128: my $x;
129: my $y;
130: my $result;
131: my $id=$Apache::inputtags::response['-1'];
132: my $temp=1;
133: foreach my $name (@whichopt) {
134: $x=$ENV{"form.HWVAL_$id:$temp.x"};
135: $y=$ENV{"form.HWVAL_$id:$temp.y"};
136: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
137: if (defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
138: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
139: my $grade="INCORRECT";
140: foreach my $area (@areas) {
141: &Apache::lonxml::debug("Area is $area for $name");
142: $area =~ m/([a-z]*):/;
143: &Apache::lonxml::debug("Area of type $1");
144: if ($1 eq 'rectangle') {
145: $grade=&grade_rectangle($area,$x,$y);
146: } else {
147: &Apache::lonxml::error("Unknown area style $area");
148: }
149: &Apache::lonxml::debug("Area said $grade");
150: if ($grade eq 'APPROX_ANS') { last; }
151: }
152: &Apache::lonxml::debug("Foil was $grade");
153: if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
154: if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
155: &Apache::lonxml::debug("Question is $result");
156: $temp++;
157: }
158: }
159: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
160: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
161: return '';
162: }
163:
164: sub end_foilgroup {
165: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
166: my $result='';
167: my @whichopt;
168: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
169: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
170: if ($count>$max) { $count=$max }
171: &Apache::lonxml::debug("Count is $count from $max");
172: @whichopt = &whichfoils($max);
173: } elsif ($target eq 'web' || $target eq 'tex') {
174: $result=&displayfoils($target,@whichopt);
175: } elsif ($target eq 'grade') {
176: if ( defined $ENV{'form.submitted'}) {
177: &gradefoils(@whichopt);
178: }
179: } elsif ($target eq 'edit') {
180: $result=&Apache::edit::end_table();
181: }
182: return $result;
183: }
184:
185: sub start_conceptgroup {
186: $Apache::imageresponse::conceptgroup=1;
187: %Apache::response::conceptgroup=();
188: return '';
189: }
190:
191: sub end_conceptgroup {
192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
193: $Apache::imageresponse::conceptgroup=0;
194: my $result;
195: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
196: if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
197: my @names = @{ $Apache::response::conceptgroup{'names'} };
198: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
199: my $name=$names[$pick];
200: if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
201: push @{ $Apache::response::foilgroup{'names'} }, $name;
202: $Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
203: $Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
204: push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
205: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
206: $Apache::response::foilgroup{"$name.concept"} = $concept;
207: &Apache::lonxml::debug("Selecting $name in $concept");
208: }
209: }
210: } elsif ($target eq 'edit') {
211: $result=&Apache::edit::end_table();
212: }
213: return $result;
214: }
215:
216: $Apache::imageresponse::curname='';
217: sub start_foil {
218: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
219: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
220: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
221: if ($name eq '') { $name=$Apache::lonxml::curdepth; }
222: if ( $Apache::imageresponse::conceptgroup
223: && !&Apache::response::showallfoils()) {
224: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
225: } else {
226: push(@{ $Apache::response::foilgroup{'names'} }, $name);
227: }
228: $Apache::imageresponse::curname=$name;
229: }
230: return '';
231: }
232:
233: sub end_foil {
234: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
235: my $result;
236: if ($target eq 'edit') {
237: $result=&Apache::edit::end_table();
238: }
239: return $result;
240: }
241:
242: sub start_text {
243: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
244: my $result='';
245: if ($target eq 'web' || $target eq 'tex') {
246: &Apache::lonxml::startredirection;
247: } elsif ($target eq 'edit') {
248: my $descr=&Apache::lonxml::get_all_text('/text',$parser);
249: $result=&Apache::edit::tag_start($target,$token,'Task Description').
250: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
251: &Apache::edit::end_row();
252: } elsif ($target eq "modified") {
253: my $descr=&Apache::lonxml::get_all_text('/text',$parser);
254: $result=$token->[4].&Apache::edit::modifiedfield($token);
255: &Apache::lonxml::debug($result);
256: }
257: return $result;
258: }
259:
260: sub end_text {
261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
262: my $result;
263: if ($target eq 'web' || $target eq 'tex') {
264: my $name = $Apache::imageresponse::curname;
265: if ( $Apache::imageresponse::conceptgroup
266: && !&Apache::response::showallfoils() ) {
267: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
268: } else {
269: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
270: }
271: } elsif ($target eq 'edit') {
272: $result=&Apache::edit::end_table();
273: }
274: return $result;
275: }
276:
277: sub start_image {
278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
279: my $result='';
280: if ($target eq 'web' || $target eq 'tex') {
281: &Apache::lonxml::startredirection;
282: } elsif ($target eq 'edit') {
283: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser);
284: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
285: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
286: $result.=&Apache::edit::browse(undef,'textnode').' ';
287: $result.=&Apache::edit::search(undef,'textnode').
288: &Apache::edit::end_row();
289: } elsif ($target eq "modified") {
290: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser);
291: $result=$token->[4].&Apache::edit::modifiedfield($token);
292: &Apache::lonxml::debug($result);
293: }
294: return $result;
295: }
296:
297: sub end_image {
298: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
299: my $result;
300: my $name = $Apache::imageresponse::curname;
301: if ($target eq 'web') {
302: my $image = &Apache::lonxml::endredirection;
303: &Apache::lonxml::debug("out is $image");
304: if ( $Apache::imageresponse::conceptgroup
305: && !&Apache::response::showallfoils()) {
306: $Apache::response::conceptgroup{"$name.image"} = $image;
307: } else {
308: $Apache::response::foilgroup{"$name.image"} = $image;
309: }
310: } elsif ($target eq 'edit') {
311: $result=&Apache::edit::end_table();
312: } elsif ($target eq 'tex') {
313: my $src = &Apache::lonxml::endredirection;
314: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
315: my $width_param = '';
316: my $height_param = '';
317: my $scaling = .3;
318: my $image = Image::Magick->new;
319: my $current_figure = $image->Read($src);
320: $width_param = $image->Get('width') * $scaling;;
321: $height_param = $image->Get('height') * $scaling;;
322: undef $image;
323: my $epssrc = $src;
324: $epssrc =~ s/(\.gif|\.jpg)$/\.eps/i;
325: if (not -e $epssrc) {
326: my $localfile = $epssrc;
327: $localfile =~ s/.*(\/res)/$1/;
328: my $file;
329: my $path;
330: if ($localfile =~ m!(.*)/([^/]*)$!) {
331: $file = $2;
332: $path = $1.'/';
333: }
334: my $signal_eps = 0;
335: my @content_directory = &Apache::lonnet::dirlist($path);
336: for (my $iy=0;$iy<=$#content_directory;$iy++) {
337: my @tempo_array = split(/&/,$content_directory[$iy]);
338: $content_directory[$iy] = $tempo_array[0];
339: if ($file eq $tempo_array[0]) {
340: $signal_eps = 1;
341: last;
342: }
343: }
344: if ($signal_eps) {
345: my $eps_file = &Apache::lonnet::getfile($localfile);
346: } else {
347: $localfile = $src;
348: $localfile =~ s/.*(\/res)/$1/;
349: my $as = &Apache::lonnet::getfile($src);
350: }
351: }
352: my $file;
353: my $path;
354: if ($src =~ m!(.*)/([^/]*)$!) {
355: $file = $2;
356: $path = $1.'/';
357: }
358: my $newsrc = $src;
359: $newsrc =~ s/(\.gif|\.jpg)$/\.eps/i;
360: $file=~s/(\.gif|\.jpg)$/\.eps/i;
361: #do we have any specified size of the picture?
362: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
363: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
364: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
365: if ($TeXwidth ne '') {
366: $width_param = $TeXwidth;
367: } elsif ($TeXheight ne '') {
368: $width_param = $TeXheight/$height_param*$width_param;
369: } elsif ($width ne '') {
370: $width_param = $width*$scaling;
371: }
372: #where can we find the picture?
373: if (-e $newsrc) {
374: if ($path) {
375: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
376: }
377: } else {
378: my $temp_file;
379: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
380: $temp_file = Apache::File->new('>>'.$filename);
381: print $temp_file "$src\n";
382: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
383: }
384: }
385: return $result;
386: }
387:
388: sub start_rectangle {
389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
390: my $result='';
391: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
392: &Apache::lonxml::startredirection;
393: } elsif ($target eq 'edit') {
394: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser);
395: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
396: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
397: &Apache::edit::end_row();
398: } elsif ($target eq "modified") {
399: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser);
400: $result=$token->[4].&Apache::edit::modifiedfield($token);
401: &Apache::lonxml::debug($result);
402: }
403: return $result;
404: }
405:
406: sub grade_rectangle {
407: my ($spec,$x,$y) = @_;
408: &Apache::lonxml::debug("Spec is $spec");
409: $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
410: my $x1=$1;
411: my $y1=$2;
412: my $x2=$3;
413: my $y2=$4;
414: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
415: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
416: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
417: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
418: return 'APPROX_ANS';
419: }
420: return 'INCORRECT';
421: }
422:
423: sub end_rectangle {
424: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
425: my $result;
426: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
427: my $name = $Apache::imageresponse::curname;
428: my $area = &Apache::lonxml::endredirection;
429: &Apache::lonxml::debug("out is $area for $name");
430: if ( $Apache::imageresponse::conceptgroup
431: && !&Apache::response::showallfoils()) {
432: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
433: } else {
434: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
435: }
436: } elsif ($target eq 'edit') {
437: $result=&Apache::edit::end_table();
438: }
439: return $result;
440: }
441: 1;
442: __END__
443:
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