1: # The LearningOnline Network with CAPA
2: # image click response style
3: #
4: # $Id: imageresponse.pm,v 1.16 2002/01/17 12:23:31 harris41 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 = $#{ $Apache::response::foilgroup{'names'} }+1;
72: return ($count,$max);
73: }
74:
75: sub whichfoils {
76: my ($max)=@_;
77: if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
78: my @names = @{ $Apache::response::foilgroup{'names'} };
79: my @whichopt =();
80: while ((($#whichopt+1) < $max) && ($#names > -1)) {
81: &Apache::lonxml::debug("Have $#whichopt max is $max");
82: my $aopt=int(rand($#names+1));
83: &Apache::lonxml::debug("From $#names elms, picking $aopt");
84: $aopt=splice(@names,$aopt,1);
85: &Apache::lonxml::debug("Picked $aopt");
86: push (@whichopt,$aopt);
87: }
88: return @whichopt;
89: }
90:
91: sub displayfoils {
92: my (@whichopt) = @_;
93: my $result ='';
94: my $name;
95: my $temp=1;
96: foreach $name (@whichopt) {
97: $result.=$Apache::response::foilgroup{"$name.text"}."<br />\n";
98: my $image=$Apache::response::foilgroup{"$name.image"};
99: if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
100: $result.="<img src=\"$image\"/> <br />\n";
101: } else {
102: $result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
103: }
104: $temp++;
105: }
106: return $result;
107: }
108:
109: sub gradefoils {
110: my (@whichopt) = @_;
111: my $result='';
112: my $x;
113: my $y;
114: my $result;
115: my $id=$Apache::inputtags::response['-1'];
116: my $temp=1;
117: foreach my $name (@whichopt) {
118: $x=$ENV{"form.HWVAL_$id:$temp.x"};
119: $y=$ENV{"form.HWVAL_$id:$temp.y"};
120: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
121: if (defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
122: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
123: my $grade="INCORRECT";
124: foreach my $area (@areas) {
125: &Apache::lonxml::debug("Area is $area for $name");
126: $area =~ m/([a-z]*):/;
127: &Apache::lonxml::debug("Area of type $1");
128: if ($1 eq 'rectangle') {
129: $grade=&grade_rectangle($area,$x,$y);
130: } else {
131: &Apache::lonxml::error("Unknown area style $area");
132: }
133: &Apache::lonxml::debug("Area said $grade");
134: if ($grade eq 'APPROX_ANS') { last; }
135: }
136: &Apache::lonxml::debug("Foil was $grade");
137: if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
138: if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
139: &Apache::lonxml::debug("Question is $result");
140: $temp++;
141: }
142: }
143: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
144: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
145: return '';
146: }
147:
148: sub end_foilgroup {
149: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
150: my $result='';
151: my @whichopt;
152: if ($target eq 'web' || $target eq 'grade') {
153: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
154: if ($count>$max) { $count=$max }
155: &Apache::lonxml::debug("Count is $count from $max");
156: @whichopt = &whichfoils($max);
157: }
158: if ($target eq 'web') {
159: $result=&displayfoils(@whichopt);
160: }
161: if ($target eq 'grade') {
162: if ( defined $ENV{'form.submitted'}) {
163: &gradefoils(@whichopt);
164: }
165: }
166: return $result;
167: }
168:
169: sub start_conceptgroup {
170: $Apache::imageresponse::conceptgroup=1;
171: %Apache::response::conceptgroup={};
172: return '';
173: }
174:
175: sub end_conceptgroup {
176: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
177: $Apache::imageresponse::conceptgroup=0;
178: if ($target eq 'web' || $target eq 'grade') {
179: if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
180: my @names = @{ $Apache::response::conceptgroup{'names'} };
181: my $pick=int(rand($#names+1));
182: my $name=$names[$pick];
183: if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
184: push @{ $Apache::response::foilgroup{'names'} }, $name;
185: $Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
186: $Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
187: push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
188: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
189: $Apache::response::foilgroup{"$name.concept"} = $concept;
190: &Apache::lonxml::debug("Selecting $name in $concept");
191: }
192: }
193: }
194: return '';
195: }
196:
197: $Apache::imageresponse::curname='';
198: sub start_foil {
199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
200: if ($target eq 'web' || $target eq 'grade') {
201: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
202: if ($name eq '') { $name=$Apache::lonxml::curdepth; }
203: if ( $Apache::imageresponse::conceptgroup ) {
204: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
205: } else {
206: push(@{ $Apache::response::foilgroup{'names'} }, $name);
207: }
208: $Apache::imageresponse::curname=$name;
209: }
210: return '';
211: }
212:
213: sub end_foil {
214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
215: return '';
216: }
217:
218: sub start_text {
219: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
220: if ($target eq 'web') { &Apache::lonxml::startredirection; }
221: return '';
222: }
223:
224: sub end_text {
225: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
226: if ($target eq 'web') {
227: my $name = $Apache::imageresponse::curname;
228: if ( $Apache::imageresponse::conceptgroup ) {
229: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
230: } else {
231: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
232: }
233: }
234: return '';
235: }
236:
237: sub start_image {
238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
239: if ($target eq 'web') { &Apache::lonxml::startredirection; }
240: return '';
241: }
242:
243: sub end_image {
244: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
245: if ($target eq 'web') {
246: my $name = $Apache::imageresponse::curname;
247: my $image = &Apache::lonxml::endredirection;
248: &Apache::lonxml::debug("out is $image");
249: if ( $Apache::imageresponse::conceptgroup ) {
250: $Apache::response::conceptgroup{"$name.image"} = $image;
251: } else {
252: $Apache::response::foilgroup{"$name.image"} = $image;
253: }
254: }
255: return '';
256: }
257:
258: sub start_rectangle {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
260: if ($target eq 'web' || $target eq 'grade') { &Apache::lonxml::startredirection; }
261: return '';
262: }
263:
264: sub grade_rectangle {
265: my ($spec,$x,$y) = @_;
266: &Apache::lonxml::debug("Spec is $spec");
267: $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
268: my $x1=$1;
269: my $y1=$2;
270: my $x2=$3;
271: my $y2=$4;
272: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
273: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
274: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
275: if ($x => $x1) { if ($x <= $x2) { if ($y => $y1) { if ($y <= $y2) { return 'APPROX_ANS'; } } } }
276: return 'INCORRECT';
277: }
278:
279: sub end_rectangle {
280: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
281: if ($target eq 'web' || $target eq 'grade') {
282: my $name = $Apache::imageresponse::curname;
283: my $area = &Apache::lonxml::endredirection;
284: &Apache::lonxml::debug("out is $area for $name");
285: if ( $Apache::imageresponse::conceptgroup ) {
286: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
287: } else {
288: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
289: }
290: }
291: return '';
292: }
293: 1;
294: __END__
295:
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