# The LearningOnline Network with CAPA # random labelling tool # # $Id: randomlabel.pm,v 1.29 2002/07/18 19:40:15 sakharuk 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) : $GroupTwo[2] = "TEXT-2" # =========================================== package Apache::randomlabel; use Apache::lonnet; use strict; use Apache::edit; BEGIN { &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label')); } sub check_int { # utility function to do error checking on a integer. my ($num,$default) = @_; $default = 100 if (! defined($default)); $num =~ s/\s+//g; # We dont need no stinkin white space! # If it is a real, just grab the integer part. ($num,undef) = split (/\./,$num) if ($num =~ /\./); # set to default if what we have left doesn't match anything... $num = $default unless ($num =~/^\d+$/); return $num; } sub start_randomlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; push (@Apache::lonxml::extlinks, '/res/adm/includes/GLabel.class'); push (@Apache::lonxml::namespace,'randomlabel'); my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval); if ( $bgimg !~ /^http:/ ) { push (@Apache::lonxml::extlinks,$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 $w= &check_int(&Apache::lonxml::get_param('width',$parstack,$safeeval)); my $h= &check_int(&Apache::lonxml::get_param('height',$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.="\n"; $result.="\n"; } elsif ($target eq 'tex') { $bgimg=~s/(.gif|.jpg)$/.eps/; $bgimg= &Apache::lonnet::filelocation($bgimg); $bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/; $bgimg=~s/\/$//; $result.='\vspace*{2mm} \noindent \epsfxsize='.$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.= "\n"; } $count = $Apache::randomlabel::ilabel_cnt; if( $count != 0) { $result.= "\n"; } $result .= "
\n
"; } elsif ($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 = (); @Apache::randomlabel::decription = (); } 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,$image,$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,$safeeval); } if ($image) { my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';"; my $out=Apache::run::run($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,$_, $Apache::randomlabel::description[$idx_arr[$_]], $idx_arr[$_],$value,$label,$safeeval); $str = 'IMG'.$Apache::randomlabel::ilabel_cnt; $xstr = 'IX'.$Apache::randomlabel::ilabel_cnt; $ystr = 'IY'.$Apache::randomlabel::ilabel_cnt; $Apache::randomlabel::ilabel_cnt += 1; } else { &Apache::lonxml::error('Unknown type of label :'.$type.':'); } if ($target eq 'web') { $result .= ''; $result .= ''; $result .= ''."\n"; } } } elsif ($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, $Apache::randomlabel::description[$idx_arr[$i]], $idx_arr[$i],$value,$label,$safeeval); } else { &Apache::lonxml::error('Unknown type of label :'.$type.':'); } } } elsif ($target eq 'edit') { $result.=&Apache::edit::end_table; } return $result; } # sub start_location { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50); my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50); 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=''; my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2); if ($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]); if ($type eq 'image') { &Apache::lonxml::debug("Turning $ltext and $Apache::lonxml::pwd[-1]"); $ltext="http://$ENV{'SERVER_NAME'}".&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1], $ltext); &Apache::lonxml::debug("into $ltext"); my $description = &Apache::lonxml::get_param('description', $parstack,$safeeval); push(@Apache::randomlabel::description,$description); } push(@Apache::randomlabel::label_arr,$ltext); } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token,"$type Label"); my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]); if ($type eq 'image') { $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); $result.=&Apache::edit::text_arg('Description:','description',$token); } if ($type eq 'text') { $result.="Label Text:"; } if ($type eq 'image') { $result.="Path to image:"; } $result.=&Apache::edit::editline('',$text,'',20). &Apache::edit::end_table(); } elsif ($target eq 'modified') { my $text=$$parser[-1]->get_text("/label"); $result = '