# The LearningOnline Network with CAPA # random labelling tool # # $Id: randomlabel.pm,v 1.22 2002/03/22 22:06:06 albertel Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # 7/20/2001 Isaac Tsai, initial syntax # 8/10/2001 Isaac Tsai, # 8/30/2001 Isaac Tsai, # SYNTAX: # # # # # # # # # # # # # # # # # # # =========================================== # side effect: # location (123,456): $GroupOne[0] = 2 # images give out indexes # (321,654): $GroupOne[1] = 1 # (213,546): $GroupOne[2] = 0 # location (12,45) : $GroupTwo[0] = "TEXT-3" # (32,65) : $GroupTwo[1] = "TEXT-1" # (21,54) : $GroupTwo[2] = "TEXT-2" # =========================================== package Apache::randomlabel; use strict; use Apache::edit; BEGIN { &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label')); } sub start_randomlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= '/res/adm/includes/GLabel.class'; push (@Apache::lonxml::namespace,'randomlabel'); my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval); if ( $bgimg !~ /^http:/ ) { $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$bgimg; $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg); if ($bgimg =~ /$Apache::lonnet::perlvar{'lonDocRoot'}/) { $bgimg=~s/$Apache::lonnet::perlvar{'lonDocRoot'}//; } elsif ($bgimg =~ m:^/home/.*/public_html:) { $bgimg =~ s:^/home/(.*)/public_html:/~$1:; } $bgimg="http://".$ENV{'SERVER_NAME'}.$bgimg; } my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval); my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval); my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval); my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval); my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval); if (!$code) { $code='GLabel.class'; } if (!$codebase) { $codebase='/res/adm/includes/'; } $Apache::randomlabel::tlabel_cnt=0; $Apache::randomlabel::ilabel_cnt=0; if ($target eq 'web') { $result.=""; $result.=""; } elsif ($target eq 'tex') { $bgimg=~s/(.gif|.jpg)$/.eps/; $bgimg=~s/http:\/\/[^\/]*/\/home\/httpd\/html/; $result.='\vspace*{2mm} \noindent \epsfxsize='.$texwidth.' mm \epsffile{'. $bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')' } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token); $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' '; $result.=&Apache::edit::browse('bgimg').' '; $result.=&Apache::edit::search('bgimg').'
'. &Apache::edit::text_arg('Width(pixel):' ,'width' ,$token,6). &Apache::edit::text_arg('Height(pixel):','height' ,$token,6). &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6). &Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval, 'bgimg','width','height', 'texwidth'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); $result.=&Apache::edit::handle_insert(); } } return $result; } sub end_randomlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; my $count; pop @Apache::lonxml::namespace; if ($target eq 'web') { $count = $Apache::randomlabel::tlabel_cnt; if( $count != 0) { $result.= ""; } $count = $Apache::randomlabel::ilabel_cnt; if( $count != 0) { $result.= ""; } $result .= "

"; } elsif ($target eq 'tex') { $result='\end{picture}'; } elsif ($target eq 'edit') { $result.=&Apache::edit::end_table; } return $result; } sub start_labelgroup { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval); my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval); $type =~tr/A-Z/a-z/; if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || $target eq 'answer') { $Apache::randomlabel::groupname=$name; $Apache::randomlabel::type=$type; @Apache::randomlabel::xcoord = (); @Apache::randomlabel::ycoord = (); @Apache::randomlabel::value = (); @Apache::randomlabel::label_arr = (); } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token); $result.=&Apache::edit::text_arg('Name:','name',$token). &Apache::edit::select_arg('Type:','type',['text','image'],$token). &Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval, 'name','type'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); $result.=&Apache::edit::handle_insert(); } } return $result; } sub add_vars { my ($name,$order,$label,$labelorder,$value,$safeeval) = @_; my $code = '${'.$name."}{'".($order+1)."'}='".$label."';"; my $out=Apache::run::run($code,$safeeval); if ($value) { $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';"; $out=Apache::run::run($code,$safeeval); $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';"; $out=Apache::run::run($code,$safeeval); } $code = '${'.$name."}{'numlocations'}='".($order+1)."';"; $out=Apache::run::run($code,$safeeval); } # begin to assign labels to locations sub end_labelgroup { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $gname = $Apache::randomlabel::groupname; my $type = $Apache::randomlabel::type; my $result=''; if ($target eq 'web' || $target eq 'answer' || $target eq 'grade') { my @idx_arr = (0 .. $#Apache::randomlabel::label_arr); &Apache::structuretags::shuffle(\@idx_arr); for(0 .. $#Apache::randomlabel::label_arr) { my $str; my $xstr; my $ystr; my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]"; my $x = $Apache::randomlabel::xcoord[$_]; my $y = $Apache::randomlabel::ycoord[$_]; my $value = $Apache::randomlabel::value[$_]; if( $type eq 'text') { &add_vars($gname,$_,$label,$idx_arr[$_],$value,$safeeval); $str = 'LB'.$Apache::randomlabel::tlabel_cnt; $xstr = 'X'.$Apache::randomlabel::tlabel_cnt; $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt; $Apache::randomlabel::tlabel_cnt += 1; } elsif ( $type eq 'image') { &add_vars($gname,$_,$idx_arr[$_],$idx_arr[$_],$value,$safeeval); $str = 'LB'.$Apache::randomlabel::ilabel_cnt; $xstr = 'X'.$Apache::randomlabel::ilabel_cnt; $ystr = 'Y'.$Apache::randomlabel::ilabel_cnt; $Apache::randomlabel::ilabel_cnt += 1; } else { &Apache::lonxml::error('Unknown type of label :'.$type.':'); } if ($target eq 'web') { $result .= ''; $result .= ''; $result .= ''; } } } elsif ($target eq 'tex') { my $WX1=0; # Web x-coord. of upper left corner (ULC) my $WY1=0; # Web y-coord. of (ULC) my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2); my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2); my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2); my $TX1=0; my $TY1=$texwidth*($wheight/$wwidth); my $TX2=$texwidth; my $TY2=0; my $slopex=($wwidth-$WX1)/($TX2-$TX1); my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0)); my $cstx=$wwidth-$slopex*($TX2); my $csty=$wheight-$slopey*($TY2); my @idx_arr = (0 .. $#Apache::randomlabel::label_arr); &Apache::structuretags::shuffle(\@idx_arr); &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":"); for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) { my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]"; my $x = $Apache::randomlabel::xcoord[$i]; my $y = $Apache::randomlabel::ycoord[$i]; my $value = $Apache::randomlabel::value[$i]; # my $tcX=$x*($texwidth/$wwidth) - $texwidth; my $tcX=$x*($texwidth/$wwidth); # my $tcY=$TY1-$y*($TY1/$wheight)-2; my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 ); my $tcY=$TY1-$y*($TY1/$wheight)+$texwidth*$ratio; $tcX=sprintf('%.2f',$tcX); $tcY=sprintf('%.2f',$tcY); $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n"; if( $type eq 'text') { &add_vars($gname,$i,$label,$idx_arr[$i],$value,$safeeval); } elsif ( $type eq 'image') { &add_vars($gname,$i,$idx_arr[$i],$idx_arr[$i],$value,$safeeval); } else { &Apache::lonxml::error('Unknown type of label :'.$type.':'); } } } elsif ($target eq 'edit') { $result.=&Apache::edit::end_table; } return $result; } # sub start_location { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval); my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval); my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval); my $result=''; push(@Apache::randomlabel::xcoord,$x); push(@Apache::randomlabel::ycoord,$y); push(@Apache::randomlabel::value,$value); if ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token); $result.=&Apache::edit::text_arg('X:','x',$token,4). &Apache::edit::text_arg('Y:','y',$token,4). &Apache::edit::text_arg('Value:','value',$token). &Apache::edit::end_row(); $result.=&Apache::edit::end_table; } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval, 'x','y','value'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); $result.=&Apache::edit::handle_insert(); } } return $result; } sub end_location { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my @result; if ($target eq 'edit') { @result=('','no') } return @result; } # sub start_label { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || $target eq 'answer') { my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[-1]); $ltext=&Apache::run::evaluate($ltext,$safeeval,$$parstack[-1]); push(@Apache::randomlabel::label_arr,$ltext); } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token); my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]); $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row(). &Apache::edit::editline('',$text,'',20). &Apache::edit::end_table(); } elsif ($target eq 'modified') { my $text=$$parser[-1]->get_text("/label"); $result.='