Annotation of loncom/homework/imageresponse.pm, revision 1.41

1.12      albertel    1: # The LearningOnline Network with CAPA
1.14      albertel    2: # image click response style
                      3: #
1.41    ! albertel    4: # $Id: imageresponse.pm,v 1.40 2003/11/10 23:29:27 albertel Exp $
1.14      albertel    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: #
1.25      www        28: #FIXME LATER assumes multiple possible submissions but only one is possible 
                     29: #currently
1.3       albertel   30: 
1.1       albertel   31: package Apache::imageresponse;
                     32: use strict;
1.21      harris41   33: use Image::Magick;
1.40      albertel   34: use Apache::randomlylabel;
                     35: use Apache::Constants qw(:common :http);
1.1       albertel   36: 
1.16      harris41   37: BEGIN {
1.36      albertel   38:     &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
1.1       albertel   39: }
                     40: 
                     41: sub start_imageresponse {
1.36      albertel   42:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     43:     my $result;
                     44:     #when in a radiobutton response use these
                     45:     &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
                     46:     push (@Apache::lonxml::namespace,'imageresponse');
                     47:     my $id = &Apache::response::start_response($parstack,$safeeval);
                     48:     if ($target eq 'meta') {
                     49: 	$result=&Apache::response::meta_package_write('imageresponse');
1.37      albertel   50:     } elsif ($target eq 'analyze') {
                     51: 	my $part_id="$Apache::inputtags::part.$id";
                     52: 	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
1.36      albertel   53:     }
                     54:     return $result;
1.1       albertel   55: }
                     56: 
                     57: sub end_imageresponse {
1.30      albertel   58:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     59:     &Apache::response::end_response;
                     60:     pop @Apache::lonxml::namespace;
                     61:     &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
                     62:     my $result;
                     63:     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
                     64:     return $result;
1.1       albertel   65: }
                     66: 
1.20      albertel   67: %Apache::response::foilgroup=();
1.1       albertel   68: sub start_foilgroup {
1.36      albertel   69:     %Apache::response::foilgroup=();
                     70:     $Apache::imageresponse::conceptgroup=0;
                     71:     &Apache::response::setrandomnumber();
                     72:     return '';
1.1       albertel   73: }
                     74: 
1.2       albertel   75: sub getfoilcounts {
1.36      albertel   76:     my ($parstack,$safeeval)=@_;
1.12      albertel   77: 
1.36      albertel   78:     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
                     79:     # +1 since instructors will count from 1
                     80:     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
                     81:     if (&Apache::response::showallfoils()) { $max=$count; }
                     82:     return ($count,$max);
1.2       albertel   83: }
                     84: 
                     85: sub whichfoils {
1.36      albertel   86:     my ($max)=@_;
                     87:     if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
                     88:     my @names = @{ $Apache::response::foilgroup{'names'} };
                     89:     my @whichopt =();
                     90:     while ((($#whichopt+1) < $max) && ($#names > -1)) {
                     91: 	&Apache::lonxml::debug("Have $#whichopt max is $max");
                     92: 	my $aopt;
                     93: 	if (&Apache::response::showallfoils()) {
                     94: 	    $aopt=0;
                     95: 	} else {
                     96: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
                     97: 	}
                     98: 	&Apache::lonxml::debug("From $#names elms, picking $aopt");
                     99: 	$aopt=splice(@names,$aopt,1);
                    100: 	&Apache::lonxml::debug("Picked $aopt");
                    101: 	push (@whichopt,$aopt);
                    102:     }
                    103:     return @whichopt;
1.2       albertel  104: }
                    105: 
1.40      albertel  106: sub prep_image {
                    107:     my ($image)=@_;
                    108:     my $part=$Apache::inputtags::part;
1.41    ! albertel  109:     my $respid=$Apache::inputtags::response['-1'];
        !           110:     my $id=&Apache::loncommon::get_cgi_id();
        !           111:     my %x;
        !           112:     $x{"cgi.$id.BGIMG"}=$image;
        !           113:     my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
1.40      albertel  114:     #draws 2 xs on the image at the clicked location
                    115:     #one in white and then one in red on top of the one in white
                    116:     if (defined($x) && defined($y)) {
1.41    ! albertel  117: 	$x{"cgi.$id.LINECOUNT"}=4;
1.40      albertel  118: 	my $length = 6;
                    119: 	my $width = 1;
                    120: 	my $extrawidth = 2;
1.41    ! albertel  121: 	$x{"cgi.$id.LINE0"}=
        !           122: 	    join(':',(($x-$length),($y-$length),($x+$length),($y+$length),
        !           123: 		      "FFFFFF",($width+$extrawidth)));
        !           124: 	$x{"cgi.$id.LINE1"}=
        !           125: 	    join(':',(($x-$length),($y+$length),($x+$length),($y-$length),
        !           126: 		      "FFFFFF",($width+$extrawidth)));
        !           127: 	$x{"cgi.$id.LINE2"}=
        !           128: 	    join(':',(($x-$length),($y-$length),($x+$length),($y+$length),
        !           129: 		      "FF0000",($width)));
        !           130: 	$x{"cgi.$id.LINE3"}=
        !           131: 	    join(':',(($x-$length),($y+$length),($x+$length),($y-$length),
        !           132: 		      "FF0000",($width)));
1.40      albertel  133:     }
1.41    ! albertel  134:     &Apache::lonnet::appenv(%x);
        !           135:     return $id;
1.40      albertel  136: }
                    137: 
1.2       albertel  138: sub displayfoils {
1.36      albertel  139:     my ($target,@whichopt) = @_;
                    140:     my $result ='';
                    141:     my $name;
                    142:     my $temp=1;
                    143:     foreach $name (@whichopt) {
                    144: 	$result.=$Apache::response::foilgroup{"$name.text"};
                    145: 	&Apache::lonxml::debug("Text is $result");
                    146: 	if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
                    147: 	my $image=$Apache::response::foilgroup{"$name.image"};
                    148: 	&Apache::lonxml::debug("image is $image");
1.40      albertel  149: 	if ( $target eq 'web' && $image !~ /^http:/ ) {
                    150: 	    $image=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$image);
                    151: 	    if (&Apache::lonnet::repcopy($image) ne OK) {
                    152: 		$image='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
                    153: 	    }
                    154: 	}
                    155: 	&Apache::lonxml::debug("image is $image");
1.36      albertel  156: 	if ( &Apache::response::show_answer() ) {
                    157: 	    if ($target eq 'tex') {
                    158: 		$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
                    159: 	    } else {
1.40      albertel  160: 		my $token=&prep_image($image);
                    161: 		$result.="<img src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36      albertel  162: 	    }
                    163: 	} else {
                    164: 	    if ($target eq 'tex') {
                    165: 		$result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
                    166: 	    } else {
1.40      albertel  167: 		my $id=$Apache::inputtags::response['-1'];
                    168: 		my $token=&prep_image($image);
                    169: 		my $temp=1;
                    170: 		$result.="<input type=\"image\" name=\"HWVAL_$id:$temp\" ".
                    171: 		    "src=\"/adm/randomlabel.png?token=$token\" /><br />\n";
1.36      albertel  172: 	    }
                    173: 	}
                    174: 	$temp++;
                    175:     }
                    176:     return $result;
1.2       albertel  177: }
                    178: 
1.3       albertel  179: sub gradefoils {
1.36      albertel  180:     my (@whichopt) = @_;
                    181:     my $x;
                    182:     my $y;
                    183:     my $result;
                    184:     my $id=$Apache::inputtags::response['-1'];
                    185:     my $temp=1;
                    186:     foreach my $name (@whichopt) {
                    187: 	$x=$ENV{"form.HWVAL_$id:$temp.x"};
                    188: 	$y=$ENV{"form.HWVAL_$id:$temp.y"};
                    189: 	&Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
                    190: 	if (defined($x) && defined($y) &&
                    191: 	    defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
                    192: 	    my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
                    193: 	    my $grade="INCORRECT";
                    194: 	    foreach my $area (@areas) {
                    195: 		&Apache::lonxml::debug("Area is $area for $name");
                    196: 		$area =~ m/([a-z]*):/;
                    197: 		&Apache::lonxml::debug("Area of type $1");
                    198: 		if ($1 eq 'rectangle') {
                    199: 		    $grade=&grade_rectangle($area,$x,$y);
                    200: 		} else {
                    201: 		    &Apache::lonxml::error("Unknown area style $area");
                    202: 		}
                    203: 		&Apache::lonxml::debug("Area said $grade");
                    204: 		if ($grade eq 'APPROX_ANS') { last; }
                    205: 	    }
                    206: 	    &Apache::lonxml::debug("Foil was $grade");
                    207: 	    if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
                    208: 	    if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
                    209: 	    &Apache::lonxml::debug("Question is $result");
                    210: 	    $temp++;
1.9       albertel  211: 	}
1.36      albertel  212:     }
                    213:     $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
                    214:     $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
                    215:     return '';
1.3       albertel  216: }
                    217: 
1.1       albertel  218: sub end_foilgroup {
1.36      albertel  219:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    220:     my $result='';
                    221:     my @whichopt;
1.38      albertel  222:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    223: 	$target eq 'analyze') {
1.36      albertel  224: 	my ($count,$max) = &getfoilcounts($parstack,$safeeval);
                    225: 	if ($count>$max) { $count=$max }
                    226: 	&Apache::lonxml::debug("Count is $count from $max");
                    227: 	@whichopt = &whichfoils($max);
                    228: 	if ($target eq 'web' || $target eq 'tex') {
                    229: 	    $result=&displayfoils($target,@whichopt);
                    230: 	} elsif ($target eq 'grade') {
                    231: 	    if ( defined $ENV{'form.submitted'}) { &gradefoils(@whichopt); }
1.37      albertel  232: 	} elsif ( $target eq 'analyze') {
                    233: 	    &Apache::response::analyze_store_foilgroup(\@whichopt,
                    234: 						      ['text','image','area']);
                    235: 	}
1.36      albertel  236:     } elsif ($target eq 'edit') {
                    237: 	$result=&Apache::edit::end_table();
                    238:     }
                    239:     return $result;
1.1       albertel  240: }
                    241: 
                    242: sub start_conceptgroup {
1.36      albertel  243:     $Apache::imageresponse::conceptgroup=1;
                    244:     %Apache::response::conceptgroup=();
                    245:     return '';
1.1       albertel  246: }
                    247: 
                    248: sub end_conceptgroup {
1.36      albertel  249:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    250:     $Apache::imageresponse::conceptgroup=0;
                    251:     my $result;
1.37      albertel  252:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    253: 	$target eq 'analyze') {
                    254: 	&Apache::response::pick_foil_for_concept($target,
                    255: 						 ['area','text','image'],
                    256: 						 \%Apache::hint::image,
                    257: 						 $parstack,$safeeval);
1.36      albertel  258:     } elsif ($target eq 'edit') {
                    259: 	$result=&Apache::edit::end_table();
                    260:     }
                    261:     return $result;
1.31      albertel  262: }
                    263: 
                    264: sub insert_foil {
                    265:     return '
                    266:        <foil>
                    267:            <image></image>
                    268:            <text></text>
                    269:            <rectangle></rectangle>
                    270:        </foil>
                    271: ';
1.1       albertel  272: }
                    273: 
1.12      albertel  274: $Apache::imageresponse::curname='';
1.1       albertel  275: sub start_foil {
1.36      albertel  276:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.37      albertel  277:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    278: 	$target eq 'analyze') {
1.36      albertel  279: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    280: 	if ($name eq '') { $name=$Apache::lonxml::curdepth; }
                    281: 	if ( $Apache::imageresponse::conceptgroup
                    282: 	     && !&Apache::response::showallfoils()) {
                    283: 	    push(@{ $Apache::response::conceptgroup{'names'} }, $name);
                    284: 	} else {
                    285: 	    push(@{ $Apache::response::foilgroup{'names'} }, $name);
                    286: 	}
                    287: 	$Apache::imageresponse::curname=$name;
                    288:     }
                    289:     return '';
1.1       albertel  290: }
                    291: 
                    292: sub end_foil {
1.26      albertel  293:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    294:     my $result;
                    295:     if ($target eq 'edit') {
                    296: 	$result=&Apache::edit::end_table();
                    297:     }
                    298:     return $result;
1.1       albertel  299: }
                    300: 
                    301: sub start_text {
1.36      albertel  302:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    303:     my $result='';
1.37      albertel  304:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
1.36      albertel  305: 	&Apache::lonxml::startredirection; 
                    306:     } elsif ($target eq 'edit') {
                    307: 	my $descr=&Apache::lonxml::get_all_text('/text',$parser);
                    308: 	$result=&Apache::edit::tag_start($target,$token,'Task Description').
                    309: 	    &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
                    310: 	    &Apache::edit::end_row();
                    311:     } elsif ($target eq "modified") {
1.39      albertel  312: 	$result=$token->[4].&Apache::edit::modifiedfield('/text',$parser);
1.36      albertel  313:     }
                    314:     return $result;
1.1       albertel  315: }
                    316: 
                    317: sub end_text {
1.36      albertel  318:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    319:     my $result;
1.37      albertel  320:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
1.36      albertel  321: 	my $name = $Apache::imageresponse::curname;
                    322: 	if ( $Apache::imageresponse::conceptgroup
                    323: 	     && !&Apache::response::showallfoils() ) {
                    324: 	    $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
                    325: 	} else {
                    326: 	    $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
                    327: 	}
                    328:     } elsif ($target eq 'edit') {
                    329: 	$result=&Apache::edit::end_table();
                    330:     }
                    331:     return $result;
1.1       albertel  332: }
                    333: 
                    334: sub start_image {
1.36      albertel  335:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    336:     my $result='';
1.37      albertel  337:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
1.36      albertel  338: 	&Apache::lonxml::startredirection; 
                    339:     } elsif ($target eq 'edit') {
                    340: 	my $bgimg=&Apache::lonxml::get_all_text('/image',$parser);
                    341: 	$Apache::edit::bgimgsrc=$bgimg;
                    342: 	$Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
                    343: 
                    344: 	$result=&Apache::edit::tag_start($target,$token,'Clickable Image').
                    345: 	    &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
                    346: 	$result.=&Apache::edit::browse(undef,'textnode').' ';
                    347: 	$result.=&Apache::edit::search(undef,'textnode').
                    348: 	    &Apache::edit::end_row();
                    349:     } elsif ($target eq "modified") {
1.39      albertel  350: 	$result=$token->[4].&Apache::edit::modifiedfield('/image',$parser);
1.36      albertel  351:     }
                    352:     return $result;
1.1       albertel  353: }
                    354: 
                    355: sub end_image {
1.36      albertel  356:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    357:     my $result;
                    358:     my $name = $Apache::imageresponse::curname;
                    359:     if ($target eq 'web') {
                    360: 	my $image = &Apache::lonxml::endredirection;
                    361: 	&Apache::lonxml::debug("original image is $image");
1.37      albertel  362: 	if ( $Apache::imageresponse::conceptgroup
                    363: 	     && !&Apache::response::showallfoils()) {
                    364: 	    $Apache::response::conceptgroup{"$name.image"} = $image;
                    365: 	} else {
                    366: 	    $Apache::response::foilgroup{"$name.image"} = $image;
                    367: 	}
                    368:     } elsif ($target eq 'analyze') {
                    369: 	my $image = &Apache::lonxml::endredirection;
1.36      albertel  370: 	if ( $Apache::imageresponse::conceptgroup
                    371: 	     && !&Apache::response::showallfoils()) {
                    372: 	    $Apache::response::conceptgroup{"$name.image"} = $image;
                    373: 	} else {
                    374: 	    $Apache::response::foilgroup{"$name.image"} = $image;
                    375: 	}
                    376:     } elsif ($target eq 'edit') {
                    377: 	$result=&Apache::edit::end_table();
                    378:     } elsif ($target eq 'tex') {
                    379: 	my $src = &Apache::lonxml::endredirection;
                    380: 	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
                    381: 	my $width_param = '';
                    382: 	my $height_param = '';
                    383: 	my $scaling = .3;
                    384: 	my $image = Image::Magick->new;
                    385: 	my $current_figure = $image->Read($src);
                    386: 	$width_param = $image->Get('width') * $scaling;;
                    387: 	$height_param = $image->Get('height') * $scaling;;
                    388: 	undef $image;
                    389: 	my $epssrc = $src;
                    390: 	$epssrc =~ s/(\.gif|\.jpg)$/\.eps/i;
                    391: 	if (not -e $epssrc) {
                    392: 	    my $localfile = $epssrc;
                    393: 	    $localfile =~ s/.*(\/res)/$1/;	
                    394: 	    my $file;
                    395: 	    my $path;	
                    396: 	    if ($localfile =~ m!(.*)/([^/]*)$!) {
                    397: 		$file = $2;
                    398: 		$path = $1.'/'; 
                    399: 	    }	
                    400: 	    my $signal_eps = 0;
                    401: 	    my @content_directory = &Apache::lonnet::dirlist($path);
                    402: 	    for (my $iy=0;$iy<=$#content_directory;$iy++) {
                    403: 		my @tempo_array = split(/&/,$content_directory[$iy]);
                    404: 		$content_directory[$iy] = $tempo_array[0];
                    405: 		if ($file eq $tempo_array[0]) {
                    406: 		    $signal_eps = 1;
                    407: 		    last;
                    408: 		}
                    409: 	    }
                    410: 	    if ($signal_eps) {
                    411: 		my $eps_file = &Apache::lonnet::getfile($localfile);
                    412: 	    } else {
                    413: 		$localfile = $src;
                    414: 		$localfile =~ s/.*(\/res)/$1/;	
                    415: 		my $as = &Apache::lonnet::getfile($src);		      
                    416: 	    }
                    417: 	}
1.19      sakharuk  418: 	my $file;
                    419: 	my $path;	
1.36      albertel  420: 	if ($src =~ m!(.*)/([^/]*)$!) {
1.19      sakharuk  421: 	    $file = $2;
                    422: 	    $path = $1.'/'; 
1.36      albertel  423: 	}
                    424: 	my $newsrc = $src;
                    425: 	$newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
                    426: 	$file=~s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
                    427: 	#do we have any specified size of the picture?
                    428: 	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); 
                    429: 	my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); 
                    430: 	my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
                    431: 	if ($TeXwidth ne '') { 
                    432: 	    $width_param = $TeXwidth; 
                    433: 	} elsif ($TeXheight ne '') { 
                    434: 	    $width_param = $TeXheight/$height_param*$width_param;
                    435: 	} elsif ($width ne '') {
                    436: 	    $width_param = $width*$scaling;      
                    437: 	}
                    438: 	#where can we find the picture?
                    439: 	if (-e $newsrc) {
                    440: 	    if ($path) {
                    441: 		$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
1.19      sakharuk  442: 	    }
                    443: 	} else {
1.36      albertel  444: 	    my $temp_file;
                    445: 	    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
                    446: 	    $temp_file = Apache::File->new('>>'.$filename); 
                    447: 	    print $temp_file "$src\n";
                    448: 	    $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
1.19      sakharuk  449: 	}
1.36      albertel  450:     } 
                    451:     return $result;
1.1       albertel  452: }
                    453: 
                    454: sub start_rectangle {
1.36      albertel  455:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    456:     my $result='';
1.38      albertel  457:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    458: 	$target eq 'analyze') { 
1.36      albertel  459: 	&Apache::lonxml::startredirection; 
                    460:     } elsif ($target eq 'edit') {
                    461: 	my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser);
                    462: 	$result=&Apache::edit::tag_start($target,$token,'Rectangle').
                    463: 	    &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
                    464: 	    &Apache::edit::entercoordpair(undef,'textnode').
                    465: 	    &Apache::edit::end_row();
                    466:     } elsif ($target eq "modified") {
1.39      albertel  467: 	$result=$token->[4].&Apache::edit::modifiedfield('/rectangle',$parser);
1.36      albertel  468:     }
                    469:     return $result;
1.1       albertel  470: }
                    471: 
1.3       albertel  472: sub grade_rectangle {
1.36      albertel  473:     my ($spec,$x,$y) = @_;
                    474:     &Apache::lonxml::debug("Spec is $spec");
                    475:     $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
                    476:     my $x1=$1;
                    477:     my $y1=$2;
                    478:     my $x2=$3;
                    479:     my $y2=$4;
                    480:     &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
                    481:     if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
                    482:     if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
                    483:     if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
                    484: 	return 'APPROX_ANS';
                    485:     }
                    486:     return 'INCORRECT';
1.3       albertel  487: }
                    488: 
1.1       albertel  489: sub end_rectangle {
1.36      albertel  490:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    491:     my $result;
1.38      albertel  492:     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
                    493: 	$target eq 'analyze') {
1.36      albertel  494: 	my $name = $Apache::imageresponse::curname;
                    495: 	my $area = &Apache::lonxml::endredirection;
                    496: 	&Apache::lonxml::debug("out is $area for $name");
                    497: 	if ( $Apache::imageresponse::conceptgroup
                    498: 	     && !&Apache::response::showallfoils()) {
                    499: 	    push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
                    500: 	} else {
                    501: 	    push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
                    502: 	}
                    503:     } elsif ($target eq 'edit') {
                    504: 	$result=&Apache::edit::end_table();
                    505:     }
                    506:     return $result;
1.1       albertel  507: }
                    508: 1;
                    509: __END__
                    510:  

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