1: # The LearningOnline Network with CAPA
2: # image click response style
3: #
4: # $Id: imageresponse.pm,v 1.18 2002/05/03 20:44:46 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 assumes multiple possbile submissions but only one is possible currently
30:
31: package Apache::imageresponse;
32: use strict;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
36: }
37:
38: sub start_imageresponse {
39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
40: my $result;
41: #when in a radiobutton response use these
42: &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
43: push (@Apache::lonxml::namespace,'imageresponse');
44: my $id = &Apache::response::start_response($parstack,$safeeval);
45: if ($target eq 'meta') {
46: $result=&Apache::response::meta_package_write('imageresponse');
47: }
48: return $result;
49: }
50:
51: sub end_imageresponse {
52: &Apache::response::end_response;
53: pop @Apache::lonxml::namespace;
54: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
55: return '';
56: }
57:
58: %Apache::response::foilgroup={};
59: sub start_foilgroup {
60: %Apache::response::foilgroup={};
61: $Apache::imageresponse::conceptgroup=0;
62: &Apache::response::setrandomnumber();
63: return '';
64: }
65:
66: sub getfoilcounts {
67: my ($parstack,$safeeval)=@_;
68:
69: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
70: # +1 since instructors will count from 1
71: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
72: if (&Apache::response::showallfoils()) { $max=$count; }
73: return ($count,$max);
74: }
75:
76: sub whichfoils {
77: my ($max)=@_;
78: if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
79: my @names = @{ $Apache::response::foilgroup{'names'} };
80: my @whichopt =();
81: while ((($#whichopt+1) < $max) && ($#names > -1)) {
82: &Apache::lonxml::debug("Have $#whichopt max is $max");
83: my $aopt;
84: if (&Apache::response::showallfoils()) {
85: $aopt=0;
86: } else {
87: $aopt=int(rand($#names+1));
88: }
89: &Apache::lonxml::debug("From $#names elms, picking $aopt");
90: $aopt=splice(@names,$aopt,1);
91: &Apache::lonxml::debug("Picked $aopt");
92: push (@whichopt,$aopt);
93: }
94: return @whichopt;
95: }
96:
97: sub displayfoils {
98: my (@whichopt) = @_;
99: my $result ='';
100: my $name;
101: my $temp=1;
102: foreach $name (@whichopt) {
103: $result.=$Apache::response::foilgroup{"$name.text"}."<br />\n";
104: my $image=$Apache::response::foilgroup{"$name.image"};
105: if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
106: $result.="<img src=\"$image\"/> <br />\n";
107: } else {
108: $result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
109: }
110: $temp++;
111: }
112: return $result;
113: }
114:
115: sub gradefoils {
116: my (@whichopt) = @_;
117: my $result='';
118: my $x;
119: my $y;
120: my $result;
121: my $id=$Apache::inputtags::response['-1'];
122: my $temp=1;
123: foreach my $name (@whichopt) {
124: $x=$ENV{"form.HWVAL_$id:$temp.x"};
125: $y=$ENV{"form.HWVAL_$id:$temp.y"};
126: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
127: if (defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
128: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
129: my $grade="INCORRECT";
130: foreach my $area (@areas) {
131: &Apache::lonxml::debug("Area is $area for $name");
132: $area =~ m/([a-z]*):/;
133: &Apache::lonxml::debug("Area of type $1");
134: if ($1 eq 'rectangle') {
135: $grade=&grade_rectangle($area,$x,$y);
136: } else {
137: &Apache::lonxml::error("Unknown area style $area");
138: }
139: &Apache::lonxml::debug("Area said $grade");
140: if ($grade eq 'APPROX_ANS') { last; }
141: }
142: &Apache::lonxml::debug("Foil was $grade");
143: if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
144: if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
145: &Apache::lonxml::debug("Question is $result");
146: $temp++;
147: }
148: }
149: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
150: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
151: return '';
152: }
153:
154: sub end_foilgroup {
155: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
156: my $result='';
157: my @whichopt;
158: if ($target eq 'web' || $target eq 'grade') {
159: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
160: if ($count>$max) { $count=$max }
161: &Apache::lonxml::debug("Count is $count from $max");
162: @whichopt = &whichfoils($max);
163: }
164: if ($target eq 'web') {
165: $result=&displayfoils(@whichopt);
166: }
167: if ($target eq 'grade') {
168: if ( defined $ENV{'form.submitted'}) {
169: &gradefoils(@whichopt);
170: }
171: }
172: return $result;
173: }
174:
175: sub start_conceptgroup {
176: $Apache::imageresponse::conceptgroup=1;
177: %Apache::response::conceptgroup={};
178: return '';
179: }
180:
181: sub end_conceptgroup {
182: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
183: $Apache::imageresponse::conceptgroup=0;
184: if ($target eq 'web' || $target eq 'grade') {
185: if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
186: my @names = @{ $Apache::response::conceptgroup{'names'} };
187: my $pick=int(rand($#names+1));
188: my $name=$names[$pick];
189: if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
190: push @{ $Apache::response::foilgroup{'names'} }, $name;
191: $Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
192: $Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
193: push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
194: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
195: $Apache::response::foilgroup{"$name.concept"} = $concept;
196: &Apache::lonxml::debug("Selecting $name in $concept");
197: }
198: }
199: }
200: return '';
201: }
202:
203: $Apache::imageresponse::curname='';
204: sub start_foil {
205: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
206: if ($target eq 'web' || $target eq 'grade') {
207: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
208: if ($name eq '') { $name=$Apache::lonxml::curdepth; }
209: if ( $Apache::imageresponse::conceptgroup
210: && !&Apache::response::showallfoils()) {
211: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
212: } else {
213: push(@{ $Apache::response::foilgroup{'names'} }, $name);
214: }
215: $Apache::imageresponse::curname=$name;
216: }
217: return '';
218: }
219:
220: sub end_foil {
221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
222: return '';
223: }
224:
225: sub start_text {
226: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
227: if ($target eq 'web') { &Apache::lonxml::startredirection; }
228: return '';
229: }
230:
231: sub end_text {
232: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
233: if ($target eq 'web') {
234: my $name = $Apache::imageresponse::curname;
235: if ( $Apache::imageresponse::conceptgroup
236: && !&Apache::response::showallfoils() ) {
237: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
238: } else {
239: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
240: }
241: }
242: return '';
243: }
244:
245: sub start_image {
246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
247: if ($target eq 'web') { &Apache::lonxml::startredirection; }
248: return '';
249: }
250:
251: sub end_image {
252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
253: if ($target eq 'web') {
254: my $name = $Apache::imageresponse::curname;
255: my $image = &Apache::lonxml::endredirection;
256: &Apache::lonxml::debug("out is $image");
257: if ( $Apache::imageresponse::conceptgroup
258: && !&Apache::response::showallfoils()) {
259: $Apache::response::conceptgroup{"$name.image"} = $image;
260: } else {
261: $Apache::response::foilgroup{"$name.image"} = $image;
262: }
263: }
264: return '';
265: }
266:
267: sub start_rectangle {
268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
269: if ($target eq 'web' || $target eq 'grade') { &Apache::lonxml::startredirection; }
270: return '';
271: }
272:
273: sub grade_rectangle {
274: my ($spec,$x,$y) = @_;
275: &Apache::lonxml::debug("Spec is $spec");
276: $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
277: my $x1=$1;
278: my $y1=$2;
279: my $x2=$3;
280: my $y2=$4;
281: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
282: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
283: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
284: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
285: return 'APPROX_ANS';
286: }
287: return 'INCORRECT';
288: }
289:
290: sub end_rectangle {
291: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
292: if ($target eq 'web' || $target eq 'grade') {
293: my $name = $Apache::imageresponse::curname;
294: my $area = &Apache::lonxml::endredirection;
295: &Apache::lonxml::debug("out is $area for $name");
296: if ( $Apache::imageresponse::conceptgroup
297: && !&Apache::response::showallfoils()) {
298: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
299: } else {
300: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
301: }
302: }
303: return '';
304: }
305: 1;
306: __END__
307:
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