--- loncom/homework/randomlabel.pm 2002/07/22 17:15:55 1.31
+++ loncom/homework/randomlabel.pm 2005/05/16 21:58:19 1.73
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# random labelling tool
#
-# $Id: randomlabel.pm,v 1.31 2002/07/22 17:15:55 sakharuk Exp $
+# $Id: randomlabel.pm,v 1.73 2005/05/16 21:58:19 foxr Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -25,9 +25,6 @@
#
# http://www.lon-capa.org/
#
-# 7/20/2001 Isaac Tsai, initial syntax
-# 8/10/2001 Isaac Tsai,
-# 8/30/2001 Isaac Tsai,
# SYNTAX:
# <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
# <labelgroup name="GroupOne" type="image">
@@ -60,9 +57,17 @@ package Apache::randomlabel;
use Apache::lonnet;
use strict;
use Apache::edit;
+use Apache::File();
+use Apache::Constants qw(:common :http);
+use Image::Magick;
+use Apache::lonplot;
+
+my %args;
+my $cgi_id;
+my $scale_factor; # image scale factor.
BEGIN {
- &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
+ &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label','bgimg'));
}
sub check_int {
@@ -77,326 +82,414 @@ sub check_int {
return $num;
}
+my ($height_param,$width_param);
sub start_randomlabel {
- my ($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') {
- $result.="<applet code=\"$code\" codebase=\"$codebase\" width=\"$w\" height=\"$h\">\n";
- $result.="<param name=\"bgimg\" value=\"$bgimg\">\n";
- } elsif ($target eq 'tex') {
- $bgimg=~s/(.gif|.jpg)$/.eps/;
- $bgimg= &Apache::lonnet::filelocation($bgimg);
- if (not $ENV{'request.role'}=~/^au\./) {
- $bgimg=~s/http:\/[^\/]*/\/home\/httpd\/html/;
- } else {
- $bgimg=~s/http:\/[^\/]*\/~([^\/]+)/\/home\/$1\/public_html/;
-
- }
- $bgimg=~s/\/$//;
- if ($texwidth==90) {
- $result.='\vspace*{2mm} \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
- $bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')';
- } else {
- $result.='\vspace*{2mm} \noindent \epsfxsize='.$texwidth.' mm \epsffile{'.
- $bgimg.'}\setlength{\unitlength}{1mm} \begin{picture}('.$texwidth.','.$texwidth*$h/$w.')('.(100-$texwidth).','.(100-$texwidth)*$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').' ';
- $result.=&Apache::edit::search('bgimg').'<br />'.
- &Apache::edit::text_arg('Width(pixel):' ,'width' ,$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);
- $result.=&Apache::edit::handle_insert();
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ push (@Apache::lonxml::namespace,'randomlabel');
+ ($height_param,$width_param)=(0,0);
+ my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
+ if ( defined($bgimg) && $bgimg !~ /^http:/ ) {
+ $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
+ if (&Apache::lonnet::repcopy($bgimg) ne 'ok') {
+ $bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
+ }
+ }
+ $Apache::randomlabel::obj_cnt=0;
+ if ($target eq 'web') {
+ $cgi_id=&Apache::loncommon::get_cgi_id();
+ %args=();
+ $args{"cgi.$cgi_id.BGIMG"}=&Apache::lonnet::escape($bgimg);
+ } elsif ($target eq 'tex' && defined($bgimg)) {
+ $result.=&make_eps_image($bgimg,$parstack,$safeeval);
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $Apache::edit::bgimgsrc=
+ &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
+ $Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
+ $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
+ $result.=&Apache::edit::browse('bgimg').' ';
+ $result.=&Apache::edit::search('bgimg').'<br />'.
+ &Apache::edit::text_arg('Width(pixel):' ,'width' ,$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;
+ 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) { $result.= "<param name=\"COUNT\" value=\"$count\">\n"; }
- $count = $Apache::randomlabel::ilabel_cnt;
- if( $count != 0) { $result.= "<param name=\"ICOUNT\" value=\"$count\">\n"; }
- $result .= "</applet>\n<BR />";
- } elsif ($target eq 'tex') {
- $result='\end{picture}\\\\';
- if (@$parstack[-1]=~/\$texwidth\s*=\s*?"90/) { #"
- @$parstack[-1]=~/\$height\s*=\s*?"(.+)?"/;
- my $howtoskipback = $1/45;
- $result.=' \vskip -'.$howtoskipback.' cm ';
- }
- } elsif ($target eq 'edit') {
- $result.=&Apache::edit::end_table;
- }
- return $result;
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $count;
+ pop @Apache::lonxml::namespace;
+ if ($target eq 'web') {
+ $count = $Apache::randomlabel::obj_cnt;
+ if( $count != 0) { $args{"cgi.$cgi_id.OBJCOUNT"}=$count; }
+ $result.='<img src="/adm/randomlabel.png?token='.$cgi_id.'" /><br />'."\n";
+ &Apache::lonnet::appenv(%args);
+ } elsif ($target eq 'tex') {
+ $result='\end{picture}\\\\';
+ $result.= ' \vskip -'.$height_param.' mm } \\\\ ';
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::end_table;
+ }
+ return $result;
+}
+
+sub start_bgimg {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
+ &Apache::lonxml::startredirection();
+ }
+ return $result;
+}
+
+sub end_bgimg {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
+ my $bgimg=&Apache::lonxml::endredirection();
+ if ($target eq 'web') {
+ $bgimg=&Apache::imageresponse::clean_up_image($bgimg);
+ $args{"cgi.$cgi_id.BGIMG"}=&Apache::lonnet::escape($bgimg);
+ } elsif ($target eq 'tex') {
+ # Some bg images can create latex for us... e.g. gnuplot.
+ # If it looks like we have some latex use that,
+ # otherwise, assume this is a resource name that must
+ # be converted into the latex to create an eps insertion.
+ #
+ my $src = $bgimg;
+ $src =~ s/\s+$//s;
+ $src =~ s/^\s+//s;
+
+
+ if ($src =~ /^\\graphicspath/) {
+ $height_param = $Apache::lonplot::plot{'height'}*0.3;
+ $width_param = $Apache::lonplot::plot{'width'}*0.3;
+ &Apache::lonxml::debug("height $height_param");
+ &Apache::lonxml::debug("Width $width_param");
+ $scale_factor=1.0;
+ my $dirty_width = $width_param + 5;
+ $result .= '\parbox{'.$dirty_width.'mm}{';
+ $result .= $src;
+ $result .= '\begin{picture}('."$height_param,$width_param)";
+ $result .= "(0,-$height_param)";
+ } else {
+
+
+ $result.=&make_eps_image($bgimg,$parstack,$safeeval,-2);
+ }
+ }
+ }
+ return $result;
+}
+sub make_eps_image {
+ my ($bgimg,$parstack,$safeeval,$depth)=@_;
+ &Apache::lonxml::debug("image prior to get_eps_image: $bgimg");
+ my ($path,$file) = &Apache::londefdef::get_eps_image($bgimg);
+ &Apache::lonxml::debug("image after: $bgimg");
+ ($height_param,$width_param)=
+ &Apache::londefdef::image_size($bgimg,0.3,$parstack,$safeeval,
+ $depth,1);
+
+ &Apache::lonxml::debug("Image size: $height_param x $width_param");
+
+ my $dirtywidth=$width_param+5;
+ my $result ="\n".'\vspace*{2mm}\noindent'."\n".
+ '\parbox{'.$dirtywidth.
+ ' mm}{ \noindent \epsfxsize='.$width_param.
+ ' mm \epsffile{'.$path.$file.
+ '}\setlength{\unitlength}{1mm}'."\n".' \begin{picture}('.
+ $width_param.','.$height_param.')(0,-'.$height_param.')'."\n";
+ my $magick = Image::Magick->new;
+ $magick->Read($bgimg);
+ my $initial_width = $magick->Get('width');
+ &Apache::lonxml::debug("ImageMagick thinks width is; $initial_width");
+ $scale_factor = $width_param / $initial_width;
+ 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);
- $result.=&Apache::edit::handle_insert();
+ my ($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 ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) {
+ &Apache::lonxml::error("Only _ a-z A-Z and 0-9 are allowed in the name to a labelgroup, and the first character can not be a number.<br />");
+ }
+ if ($target eq 'web' || $target eq 'tex' ||
+ $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
+ $Apache::randomlabel::groupname=$name;
+ $Apache::randomlabel::type=$type;
+ @Apache::randomlabel::xcoord = ();
+ @Apache::randomlabel::ycoord = ();
+ @Apache::randomlabel::value = ();
+ @Apache::randomlabel::label_arr = ();
+ @Apache::randomlabel::description = ();
+ } 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'],$token);
+ if (!defined($token->[2]{'TeXsize'})) {
+ $token->[2]{'TeXsize'}='\normalsize';
+ }
+ $result.=&Apache::edit::select_arg('TeX font size:','TeXsize',
+ ['\tiny','\scriptsize',
+ '\footnotesize','\small',
+ '\normalsize','\large','\Large',
+ '\LARGE','\huge','\Huge'],
+ $token);
+ $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'name','type',
+ 'TeXsize');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
}
- }
- return $result;
+ return $result;
}
+#
+# Utility sub to compute the width of a label.
+#
+sub get_label_width {
+ my $label = shift;
+ &Apache::lonxml::debug("image label = $label");
+ if (-e $label) {
+ &Apache::lonxml::debug("$label exists");
+ } else {
+ &Apache::lonxml::debug("$label does not exist");
+ }
+ my $magick = Image::Magick->new;
+ $magick->Read($label);
+ my $pixel_width = $magick->Get('width');
+ return $pixel_width * $scale_factor;
+
+
+}
sub add_vars {
- my ($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)."'}='".$value."';";
+ my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
+ if (!defined($name) || $name eq '') { return; }
+ 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,$safeeval);
- }
- if ($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 .= '<param name="' . $str . '" value="'.$label.'">';
- $result .= '<param name="' . $xstr . '" value="'.$x.'">';
- $result .= '<param name="' . $ystr . '" value="'.$y.'">'."\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];
- #x latex coordinate
- my $tcX=($x-5)*($texwidth/$wwidth);
- #y latex coordinate
- 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 $result;
+ my ($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' ||
+ $target eq 'analyze') {
+ my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
+ &Apache::structuretags::shuffle(\@idx_arr);
+ for(0 .. $#Apache::randomlabel::label_arr) {
+ my $str;
+ my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
+ my $x = $Apache::randomlabel::xcoord[$_];
+ my $y = $Apache::randomlabel::ycoord[$_];
+ my $value = $Apache::randomlabel::value[$_];
+ my $i=$Apache::randomlabel::obj_cnt++;
+ if( $type eq 'text') {
+ &add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
+ $str = join(':',$x,$y,&Apache::lonnet::escape($label));
+ $args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:';
+ } elsif ( $type eq 'image') {
+ &add_vars($gname,$_,
+ $Apache::randomlabel::description[$idx_arr[$_]],
+ $idx_arr[$_],$value,$label,$safeeval);
+ $str = join(':',$x,$y,&Apache::lonnet::escape($label));
+ $args{"cgi.$cgi_id.OBJTYPE"}.='IMAGE:';
+ } else {
+ &Apache::lonxml::error('Unknown type of label :'.$type.':');
+ }
+ if ($target eq 'web') { $args{"cgi.$cgi_id.OBJ$i"} =$str; }
+ }
+ } 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 $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+ if (!defined($TeXsize)) { $TeXsize='\\normalsize'; }
+
+ 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];
+ # FIXME the 3.5 here is the 'height' of the letter in TeX
+ my $y = $Apache::randomlabel::ycoord[$i]-3.5;
+ my $value = $Apache::randomlabel::value[$i];
+ #x latex coordinate
+ my $tcX=($x)*($width_param/$wwidth);
+ #y latex coordinate
+ # my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
+ my $tcY=$height_param-$y*($height_param/$wheight);
+ $tcX=sprintf('%.2f',$tcX);
+ $tcY=sprintf('%.2f',$tcY);
+ $result .= '\put('.$tcX.','.$tcY.'){';
+ if( $type eq 'text') {
+ $result.= $TeXsize.' \bf '.$label."}\n";
+ &add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
+ } elsif ( $type eq 'image') {
+ my ($path,$file) = &Apache::londefdef::get_eps_image($label);
+ my $image_name = $path.$file;
+ my $label_width = get_label_width($label);
+
+ $result .= '\includegraphics[width='.$label_width.'mm]{'
+ .$image_name."}}\n";
+ &add_vars($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 $result;
}
# <location x="123" y="456" value="some value"/>
sub start_location {
- my ($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);
- $result.=&Apache::edit::handle_insert();
+ my ($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',$token,4).
+ &Apache::edit::entercoords('x','y','attribute','width','height').' '.
+ &Apache::edit::text_arg('Value:','value',$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;
+ return $result;
}
sub end_location {
- my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- my @result;
- if ($target eq 'edit') { @result=('','no') }
- return @result;
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my @result;
+ if ($target eq 'edit') { @result=('','no') }
+ return @result;
}
# <label>$var_abc</label>
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");
- $result = '<label>';
- if ($type eq 'image') {
- my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
- 'description');
- if ($constructtag) {
- $result = &Apache::edit::rebuild_tag($token);
- } else {
- $result = $token->[4];
- }
- }
- $result.=&Apache::edit::modifiedfield($token);
- }
- return $result;
+ my ($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' || $target eq 'analyze') {
+ &Apache::lonxml::startredirection;
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token,"$type Label");
+ my $text=&Apache::lonxml::get_all_text("/label",$parser);
+ 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,'',50).
+ &Apache::edit::end_table();
+ } elsif ($target eq 'modified') {
+ $result = '<label>';
+ if ($type eq 'image') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,
+ 'description');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ } else {
+ $result = $token->[4];
+ }
+ }
+ $result.=&Apache::edit::modifiedfield("/label",$parser);
+ }
+ return $result;
}
sub end_label {
- my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- my @result;
- if ($target eq 'edit') { @result=('','no') }
- return @result;
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my @result;
+ if ($target eq 'edit') {
+ @result=('','no') ;
+ } elsif ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
+ $target eq 'answer' || $target eq 'analyze') {
+ my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
+ my $ltext=&Apache::lonxml::endredirection;
+ if ($type eq 'image') {
+ if ($target eq 'tex') {
+ # For tex targets, our image url has been potentially corrupted
+ # by prepending \'s in front of special latex symbols.
+ # For now we only worry about the _ case (most common?)
+ # There's a whole host of theim in lonxml::latex_special_symbols
+ # that could potentially have to be re-done.
+
+ $ltext =~ s/\\_/_/g;
+ }
+ &Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]");
+ $ltext=&Apache::imageresponse::clean_up_image($ltext);
+# $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
+# $ltext);
+ &Apache::lonxml::debug("into $ltext");
+ my $description = &Apache::lonxml::get_param('description',
+ $parstack,$safeeval);
+ push(@Apache::randomlabel::description,$description);
+ } else {
+ $ltext=~s/[\r\n]*//gs
+ }
+ push(@Apache::randomlabel::label_arr,$ltext);
+ }
+ return @result;
}
-
-
1;
__END__