Diff for /loncom/xml/londefdef.pm between versions 1.210 and 1.281

version 1.210, 2004/04/15 19:08:31 version 1.281, 2005/07/12 21:05:49
Line 36 Line 36
 # The C source of the Code may not be distributed by the Licensee  # The C source of the Code may not be distributed by the Licensee
 # to any other parties under any circumstances.  # to any other parties under any circumstances.
 #  #
 #  
 # last modified 06/26/00 by Alexander Sakharuk  
 # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer  
 # 01/18 Alex Sakharuk  
   
 package Apache::londefdef;   package Apache::londefdef; 
   
 use Apache::lonnet();  use Apache::lonnet;
 use strict;  use strict;
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::File();  use Apache::File();
Line 63  sub initialize_londefdef { Line 59  sub initialize_londefdef {
     $Apache::londefdef::TD_redirection=0;      $Apache::londefdef::TD_redirection=0;
     @Apache::londefdef::table = ();      @Apache::londefdef::table = ();
     $Apache::londefdef::select=0;      $Apache::londefdef::select=0;
     @Apache::londefdef::description=();      undef(@Apache::londefdef::description);
     $Apache::londefdef::DD_redirection=0;      @Apache::londefdef::DD=(0);
     $Apache::londefdef::DT_redirection=0;      @Apache::londefdef::DT=(0);
       @Apache::londefdef::seenDT=(0);
       $Apache::londefdef::list_index=0;
 }  }
   
 #======================= TAG SUBROUTINES =====================  #======================= TAG SUBROUTINES =====================
Line 86  sub start_m { Line 84  sub start_m {
     my $currentstring = '';      my $currentstring = '';
     my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);      my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
     if ($target eq 'web' || $target eq 'analyze') {      if ($target eq 'web' || $target eq 'analyze') {
  $inside ='\\documentstyle{article}'.$inside;  
  &Apache::lonxml::debug("M is starting with:$inside:");   &Apache::lonxml::debug("M is starting with:$inside:");
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
  if ($eval eq 'on') {   if ($eval eq 'on') {
     $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);      $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
     #&Apache::lonxml::debug("M is evaulated to:$inside:");      #&Apache::lonxml::debug("M is evaulated to:$inside:");
  }   }
  $currentstring = &Apache::lontexconvert::converted(\$inside);   my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
    $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
  if ($Apache::lontexconvert::errorstring) {   if ($Apache::lontexconvert::errorstring) {
     &Apache::lonxml::warning("tth error: ".      &Apache::lonxml::warning("tth error: ".
      $Apache::lontexconvert::errorstring);       $Apache::lontexconvert::errorstring);
Line 108  sub start_m { Line 106  sub start_m {
     $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);      $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
  }   }
  if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}   if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
    # detect simple math mode entry exits, and convert them
           # to use \ensuremath
    if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
       $currentstring=~s/^\$//;
       $currentstring=~s/\$$//;
       $currentstring='\ensuremath{'.$currentstring.'}';
    }
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     }      }
     return $currentstring;      return $currentstring;
Line 128  sub start_tthoption { Line 133  sub start_tthoption {
     if ($target eq 'web') {      if ($target eq 'web') {
  my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);   my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
  $inside=~s/^\s*//;   $inside=~s/^\s*//;
  if ($ENV{'browser.mathml'}) {   if ($env{'browser.mathml'}) {
     &tth::ttmoptions($inside);      &tth::ttmoptions($inside);
  } else {   } else {
     &tth::tthoptions($inside);      &tth::tthoptions($inside);
Line 147  sub end_tthoption { Line 152  sub end_tthoption {
 sub start_html {  sub start_html {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};      my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
     &Apache::lontexconvert::init_tth();      &Apache::lontexconvert::init_tth();
     if ($target eq 'web' || $target eq 'edit') {      if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
  $currentstring = &Apache::lonxml::xmlbegin().   $currentstring = &Apache::lonxml::xmlbegin();
     &Apache::lonxml::fontsettings();       
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  @Apache::londefdef::table = ();  
  $currentstring .= '\documentclass[letterpaper]{article}';   $currentstring .= '\documentclass[letterpaper]{article}';
  if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}    if (($env{'form.latex_type'}=~'batchmode') ||
  $currentstring .= '\newcommand{\keephidden}[1]{}              (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} 
                            \renewcommand{\deg}{$^{\circ}$}   $currentstring .= '\newcommand{\keephidden}[1]{}'.
                            \usepackage{longtable}                            '\renewcommand{\deg}{$^{\circ}$}'.
                            \usepackage{textcomp}                            '\usepackage{longtable}'.
                            \usepackage{makeidx}                            '\usepackage{textcomp}'.
                            \usepackage[dvips]{graphicx}                            '\usepackage{makeidx}'.
                            \usepackage{epsfig}\usepackage{calc}                            '\usepackage[dvips]{graphicx}'.
 \newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}    '\usepackage{picins}'.
 \renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';                            '\usepackage{epsfig}'.
                             '\usepackage{calc}'.
                             '\usepackage{amsmath}'.
                             '\usepackage{amssymb}'.
                             '\usepackage{amsfonts}'.
                             '\usepackage{amsthm}'.
                             '\usepackage{amscd}'.
                             '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
                             '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_html {  sub end_html {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = &Apache::lonxml::xmlend();   $currentstring = '</html>';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 183  sub start_head { Line 194  sub start_head {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4].&Apache::lonxml::fontsettings();
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 191  sub start_head { Line 202  sub start_head {
 sub end_head {  sub end_head {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web' && $ENV{'request.state'} eq 'published') {      if ($target eq 'web' && $env{'request.state'} eq 'published') {
  $currentstring = &Apache::lonmenu::registerurl(undef,$target).   $currentstring = &Apache::lonmenu::registerurl(undef,$target).
     $token->[2];          $token->[2];    
     }       } 
Line 472  sub end_accessrule { Line 483  sub end_accessrule {
 sub start_body {  sub start_body {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
   
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($Apache::lonhomework::parsing_a_problem) {   if ($Apache::lonhomework::parsing_a_problem) {
     &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");      &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
     return '';      return '';
  }   }
  if (!$Apache::lonxml::registered &&    if (!$Apache::lonxml::registered && 
     $ENV{'request.state'} eq 'published') {      $env{'request.state'} eq 'published') {
     $currentstring.='<head>'.      $currentstring.='<head>'.
  &Apache::lonmenu::registerurl(undef,$target).'</head>';   &Apache::lonmenu::registerurl(undef,$target).'</head>';
  }   }
 # Accessibility  # Accessibility
  if ($ENV{'browser.imagesuppress'} eq 'on') {   if ($env{'browser.imagesuppress'} eq 'on') {
     delete($token->[2]->{'background'});      delete($token->[2]->{'background'});
  }   }
  if ($ENV{'browser.fontenhance'} eq 'on') {   if ($env{'browser.fontenhance'} eq 'on') {
     my $style='';      my $style='';
     foreach my $key (keys(%{$token->[2]})) {      foreach my $key (keys(%{$token->[2]})) {
  if ($key =~ /^style$/i) {   if ($key =~ /^style$/i) {
Line 496  sub start_body { Line 508  sub start_body {
     }      }
     $token->[2]->{'style'}=$style.'; font-size: x-large;';      $token->[2]->{'style'}=$style.'; font-size: x-large;';
  }   }
  if ($ENV{'browser.blackwhite'} eq 'on') {   if ($env{'browser.blackwhite'} eq 'on') {
     delete($token->[2]->{'font'});      delete($token->[2]->{'font'});
     delete($token->[2]->{'link'});      delete($token->[2]->{'link'});
     delete($token->[2]->{'alink'});      delete($token->[2]->{'alink'});
Line 528  sub start_body { Line 540  sub start_body {
     $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';      $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
  }   }
  $currentstring.='>';   $currentstring.='>';
  if ($ENV{'request.state'} ne 'published') {   if ($env{'request.state'} ne 'published') {
       if ($env{'environment.remote'} eq 'off') {
    $currentstring.= 
       &Apache::lonmenu::constspaceform().
       &Apache::lonmenu::menubuttons(1,'web',1);
       }
     $currentstring.=(<<EDITBUTTON);      $currentstring.=(<<EDITBUTTON);
  <form method="post">  <form method="post">
  <input type="submit" name="editmode" accesskey="e" value="Edit" />  <input type="submit" name="editmode" accesskey="e" value="Edit" />
  </form>  </form>
 EDITBUTTON  EDITBUTTON
  } else {   } else {
     $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);      $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
Line 545  EDITBUTTON Line 562  EDITBUTTON
 }  }
   
 sub end_body {  sub end_body {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off unclosed <p>
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring .= &Apache::lonxml::xmlend($target,$parser);
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';     $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 558  sub end_body { Line 575  sub end_body {
 #-- <center> tag (end tag required)  #-- <center> tag (end tag required)
 sub start_center {  sub start_center {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{center}';     $currentstring .= '\begin{center}';  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 579  sub end_center { Line 596  sub end_center {
 }  }
   
 #-- <b> tag (end tag required)  #-- <b> tag (end tag required)
   #      NOTE: In TeX mode disables internal <p>
 sub start_b {  sub start_b {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\textbf{';     &disable_para();
    $currentstring .= '\textbf{';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 596  sub end_b { Line 615  sub end_b {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '}';     &enable_para();
    $currentstring = '}';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <strong> tag (end tag required)  #-- <strong> tag (end tag required)
   #    NOTE: in TeX mode disables internal <p>
 sub start_strong {  sub start_strong {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    &disable_para();
  $currentstring = '\textbf{';     $currentstring = '\textbf{';  
     }       } 
     return $currentstring;      return $currentstring;
Line 619  sub end_strong { Line 641  sub end_strong {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    &enable_para();
  $currentstring = '}';     $currentstring = '}';  
     }      }
     return $currentstring;      return $currentstring;
Line 627  sub end_strong { Line 650  sub end_strong {
 #-- <h1> tag (end tag required)  #-- <h1> tag (end tag required)
 sub start_h1 {  sub start_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));   my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 642  sub start_h1 { Line 665  sub start_h1 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     } elsif ($target eq 'meta') {      } elsif ($target eq 'meta') {
  $currentstring='<subject>';   $currentstring.='<subject>';
  &start_output($target);   &start_output($target);
     }      }
     return $currentstring;      return $currentstring;
Line 656  sub end_h1 { Line 679  sub end_h1 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 676  sub end_h1 { Line 699  sub end_h1 {
 #-- <h2> tag  #-- <h2> tag
 sub start_h2 {  sub start_h2 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 691  sub start_h2 { Line 714  sub start_h2 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 702  sub end_h2 { Line 725  sub end_h2 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 719  sub end_h2 { Line 742  sub end_h2 {
 #-- <h3> tag  #-- <h3> tag
 sub start_h3 {  sub start_h3 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 734  sub start_h3 { Line 757  sub start_h3 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 745  sub end_h3 { Line 768  sub end_h3 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 762  sub end_h3 { Line 785  sub end_h3 {
 #-- <h4> tag  #-- <h4> tag
 sub start_h4 {  sub start_h4 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 777  sub start_h4 { Line 800  sub start_h4 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 788  sub end_h4 { Line 811  sub end_h4 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 805  sub end_h4 { Line 828  sub end_h4 {
 #-- <h5> tag  #-- <h5> tag
 sub start_h5 {  sub start_h5 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior paras.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 820  sub start_h5 { Line 843  sub start_h5 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 831  sub end_h5 { Line 854  sub end_h5 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 848  sub end_h5 { Line 871  sub end_h5 {
 #-- <h6> tag  #-- <h6> tag
 sub start_h6 {  sub start_h6 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior paras.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 863  sub start_h6 { Line 886  sub start_h6 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 874  sub end_h6 { Line 897  sub end_h6 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 1095  sub end_q { Line 1118  sub end_q {
     return $currentstring;      return $currentstring;
 }  }
   
   #  <p> is a bit strange since it does not require a closing </p>
   #  However in latex, we must often output closing stuff to end
   #  environments and {}'s etc.  Therefore we do all the work
   #  of figuring out the ending strings in the start tag processing,
   #  and provide a mechanism to output the stop text external
   #  to tag processing.
   #
   {
   
       my $closing_string = ''; # String required to close <p>
   
   #   Some tags are <p> fragile meaning that <p> inside of them
   #   does not work within TeX mode.  This is managed via the 
   #   counter below:
   #
   
       my $para_disabled = 0;
   
   sub disable_para {
       $para_disabled++;
   }
   sub enable_para {
       $para_disabled--;
   }
   
   
 #-- <p> tag (end tag optional)  #-- <p> tag (end tag optional)
 #optional attribute - align="center|left|right"  #optional attribute - align="center|left|right"
 sub start_p {  sub start_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
    $currentstring .= &end_p(); # close off prior para if in progress.
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {   if (! ($currentstring =~ /\//)) {
       $closing_string = '</p>'; # Deal correctly with <p /> e.g.
    }
       } elsif ($target eq 'tex' && !$para_disabled) {
    $currentstring .= &end_p(); # close off prior para if in progress.
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if ($align eq 'center') {   if ($align eq 'center') {
     $currentstring='\begin{center}\par';      $currentstring .='\begin{center}\par';
       $closing_string = '\end{center}';
  } elsif ($align eq 'right') {   } elsif ($align eq 'right') {
     $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';      $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
       $closing_string= '}}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';      $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
  }      $closing_string = '}\hfill}';
  my $signal=1;#<p> does not work inside <b>...</b>    } else {
  foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}              $currentstring.='\par ';
  if (!$signal) {$currentstring = '';}      $closing_string = '\strut\\\\\strut ';
  }          }
   
     }      }
     return $currentstring;      return $currentstring;
 }  }
   #
   #  End paragraph processing just requires that we output the
   #  closing string that was saved and blank it.
 sub end_p {  sub end_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      #  Note only 'tex' mode uses disable_para and enable_para
     my $currentstring = '';      #  so we don't need to know the target in the check below:
     if ($target eq 'web') {  
  $currentstring .= $token->[2];      if (!$para_disabled) {
     } elsif ($target eq 'tex') {   my $current_string = $closing_string;
  if ($$tagstack[-1] eq 'p') {   $closing_string = ''; # Not in a para anymore.
     my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   return $current_string;
     if ($align eq 'center') {      } else {
  $currentstring .= '\end{center}';   return '';
     } elsif ($align eq 'right') {  
  $currentstring .= '}}';  
     } elsif ($align eq 'left') {  
  $currentstring .= '}\hfill}';  
     }  
  }  
     }      }
     return $currentstring;  
 }  
   
   }
   }
 #-- <br> tag (end tag forbidden)  #-- <br> tag (end tag forbidden)
 sub start_br {  sub start_br {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
Line 1146  sub start_br { Line 1199  sub start_br {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {   my @tempo=@$tagstack;
     $currentstring .= '\vskip 0.2 mm ';   my $signal=0;
    for (my $i=$#tempo;$i>=0;$i--) {
       if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
                   ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
                   ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th'))  {
    $signal=1;
    last;
       }
    }
    if ($signal) {
       $currentstring .= ' \vskip 0 mm ';
    } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
       $currentstring .= '\strut \\\\ \strut ';
  }   }
     }      }
     return $currentstring;      return $currentstring;
Line 1244  sub start_font { Line 1309  sub start_font {
     if ($target eq 'web') {      if ($target eq 'web') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);   my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  if ($face!~/symbol/i) {   if ($face!~/symbol/i) {
     if (($ENV{'browser.fontenhance'} eq 'on') ||       if (($env{'browser.fontenhance'} eq 'on') || 
  ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }   ($env{'browser.blackwhite'} eq 'on')) { return ''; }
  }   }
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
Line 1372  sub end_sup { Line 1437  sub end_sup {
 #-- <hr> tag (end tag forbidden)  #-- <hr> tag (end tag forbidden)
 sub start_hr {  sub start_hr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # End enclosing para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
Line 1410  sub end_hr { Line 1475  sub end_hr {
 }  }
   
 #-- <div> tag (end tag required)  #-- <div> tag (end tag required)
   {
   
   #  Since div can be nested, the stack below is used
   #  in 'tex' mode to store the ending strings
   #  for the div stack.
   
       my @div_end_stack;
   
 sub start_div {  sub start_div {
     my ($target,$token) = @_;      my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close enclosing para.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     }       } 
       if ($target eq 'tex') {
    # 4 possible alignments: left, right, center, and -missing-.
   
    my $endstring = '';
   
    my $align = lc(&Apache::lonxml::get_param('align', $parstack,
     $safeeval, undef, 1));
    if ($align eq 'center') {
       $currentstring .= '\begin{center}';
       $endstring      = '\end{center}';
    }
    elsif ($align eq 'right') {
       $currentstring .= '\begin{flushright}';
       $endstring     .= '\end{flushright}';
    } elsif ($align eq 'left') {
       $currentstring .= '\begin{flushleft}';
       $endstring     = '\end{flushleft}';
    } else {
   
    }
    $currentstring .= "\n";   # For human readability.
    $endstring       = "\n$endstring\n"; # For human readability
    push(@div_end_stack, $endstring);
       }
     return $currentstring;      return $currentstring;
 }  }
   
Line 1424  sub end_div { Line 1521  sub end_div {
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     }       }
       if ($target eq 'tex') {
    my $endstring = pop @div_end_stack;
    $currentstring .= $endstring;
       }
     return $currentstring;      return $currentstring;
 }  }
   }
   
 #-- <a> tag (end tag required)  #-- <a> tag (end tag required)
 sub start_a {  sub start_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
       undef,1);
    $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);   my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
  my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);   my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
Line 1465  sub start_li { Line 1569  sub start_li {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my  $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type=~/circle/) {   my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
     $currentstring .= ' \item[o] ';   #FIXME need to support types i and I 
    if ($type=~/disc/) {
       $currentstring .= ' \item[$\bullet$] ';
    } elsif ($type=~/circle/) {
       $currentstring .= ' \item[$\circ$] ';
  } elsif ($type=~/square/) {   } elsif ($type=~/square/) {
     $currentstring .= ' \item[$\Box$] ';      $currentstring .= ' \item[$\diamond$] ';
  } elsif ($type ne '') {    } elsif ($type eq '1') {
     $currentstring .= ' \item['.$type.'] ';      $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
    } elsif ($type eq 'A') {
       $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
    } elsif ($type eq 'a') {
       $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
    } elsif ($value ne '') {
       $currentstring .= ' \item['.$value.'] ';
  } else {   } else {
     $currentstring .= ' \item ';      $currentstring .= ' \item ';
  }     }  
     }    $Apache::londefdef::list_index++;
       }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_li {  sub end_li {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> in the <li>
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring .= $token->[2];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1517  sub end_u { Line 1632  sub end_u {
 #-- <ul> tag (end tag required)  #-- <ul> tag (end tag required)
 sub start_ul {  sub start_ul {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off enclosing list.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
    $Apache::londefdef::list_index=0;
  if ($TeXtype eq 'disc') {   if ($TeXtype eq 'disc') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}      $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                 '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                '\renewcommand{\labelitemiv}{$\bullet$}';
  } elsif ($TeXtype eq 'circle') {   } elsif ($TeXtype eq 'circle') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}      $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
                                 \renewcommand{\labelitemii}{$\circ$}                                 '\renewcommand{\labelitemii}{$\circ$}'. 
                                 \renewcommand{\labelitemiii}{$\circ$}                                '\renewcommand{\labelitemiii}{$\circ$}'.
                                 \renewcommand{\labelitemiv}{$\circ$}';                                '\renewcommand{\labelitemiv}{$\circ$}';
  } elsif ($TeXtype eq 'square') {   } elsif ($TeXtype eq 'square') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}      $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
                                 \renewcommand{\labelitemii}{$\diamond$}                                 '\renewcommand{\labelitemii}{$\diamond$}'. 
                                 \renewcommand{\labelitemiii}{$\diamond$}                                '\renewcommand{\labelitemiii}{$\diamond$}'.
                                 \renewcommand{\labelitemiv}{$\diamond$}';                                '\renewcommand{\labelitemiv}{$\diamond$}';
  }   }
  $currentstring .= '\begin{itemize}';     $currentstring .= '\strut \begin{itemize}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1549  sub end_ul { Line 1665  sub end_ul {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}   $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                  '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                 '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                   '\renewcommand{\labelitemiv}{$\bullet$}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1583  sub end_menu { Line 1699  sub end_menu {
 #-- <dir> tag (end tag required)  #-- <dir> tag (end tag required)
 sub start_dir {  sub start_dir {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> prior to the list.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = " \\begin{itemize} ";     $currentstring .= " \\begin{itemize} ";  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1606  sub end_dir { Line 1722  sub end_dir {
 #-- <ol> tag (end tag required)  #-- <ol> tag (end tag required)
 sub start_ol {  sub start_ol {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> prior to the list.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    $Apache::londefdef::list_index=0;
  my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type eq '1') {   if ($type eq '1') {
     $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                 \renewcommand{\labelenumii}{\arabic{enumii}.}                                 '\renewcommand{\labelenumii}{\arabic{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
  } elsif ($type eq 'A') {   } elsif ($type eq 'A') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Alph{enumii}.}                                 '\renewcommand{\labelenumii}{\Alph{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\Alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Alph{enumiv}.}';                                '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
  } elsif ($type eq 'a') {   } elsif ($type eq 'a') {
     $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\alph{enumii}.}                                '\renewcommand{\labelenumii}{\alph{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\alph{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
  } elsif ($type eq 'i') {   } elsif ($type eq 'i') {
     $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\roman{enumii}.}                                '\renewcommand{\labelenumii}{\roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
  } elsif ($type eq 'I') {   } elsif ($type eq 'I') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Roman{enumii}.}                                '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\Roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
  }   }
  $currentstring .= '\begin{enumerate}';     $currentstring .= '\strut \begin{enumerate}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1648  sub end_ol { Line 1765  sub end_ol {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}   $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                           \renewcommand{\labelenumii}{\arabic{enumii}.}                                          '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
                                           \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                          '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                           \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                            '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1659  sub end_ol { Line 1776  sub end_ol {
 #-- <dl> tag (end tag required)  #-- <dl> tag (end tag required)
 sub start_dl {  sub start_dl {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{description}';   $currentstring .= '\begin{description}';
  @Apache::londefdef::description=();   $Apache::londefdef::DL++;
  $Apache::londefdef::DD_redirection=0;   push(@Apache::londefdef::description,[]);
  $Apache::londefdef::DT_redirection=0;   $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
    $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
    $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1677  sub end_dl { Line 1796  sub end_dl {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
     push @Apache::londefdef::description,'\item['.$data.']';   foreach my $element (@{$Apache::londefdef::description[-1]}) {
     $Apache::londefdef::DT_redirection=0;  
  } elsif ($Apache::londefdef::DD_redirection) {  
     $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();  
  }  
  foreach my $element (@Apache::londefdef::description) {  
     $currentstring.=' '.$element.' ';      $currentstring.=' '.$element.' ';
  }   }
  @Apache::londefdef::description=();   pop(@Apache::londefdef::description);
  $currentstring.='\end{description}';     $currentstring.='\end{description}';  
    delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
    delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
    delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
    $Apache::londefdef::DL--;
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1700  sub start_dt { Line 1818  sub start_dt {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
     push @Apache::londefdef::description,'\item['.$data.']';  
     $Apache::londefdef::DT_redirection=0;  
  } elsif ($Apache::londefdef::DD_redirection) {  
     $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();  
     $Apache::londefdef::DD_redirection=0;  
  }  
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
  $Apache::londefdef::DT_redirection=1;   $Apache::londefdef::DT[-1]++;
    $Apache::londefdef::seenDT[-1]=1;
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1720  sub end_dt { Line 1833  sub end_dt {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $data=&item_cleanup;   if ($Apache::londefdef::DT[-1]) {
  push @Apache::londefdef::description,'\item['.$data.']';      my $data=&item_cleanup();
  $Apache::londefdef::DT_redirection=0;      push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
       $Apache::londefdef::DT[-1]--;
    }
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1741  sub start_dd { Line 1856  sub start_dd {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
     push @Apache::londefdef::description,'\item['.$data.']';   if (!$Apache::londefdef::seenDT[-1]) {
     $Apache::londefdef::DT_redirection=0;      push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
  }   }
  $Apache::londefdef::DD_redirection=1;   push(@{$Apache::londefdef::description[-1]},'');
    $Apache::londefdef::description[-1]->[-1].=' \strut ';
    $Apache::londefdef::DD[-1]++;
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
     }       } 
     return $currentstring;      return $currentstring;
Line 1758  sub end_dd { Line 1875  sub end_dd {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();   $Apache::londefdef::description[-1]->[-1].=
  $Apache::londefdef::DD_redirection=0;      &Apache::lonxml::endredirection().' \vskip 0mm ';
    $Apache::londefdef::DD[-1]--;
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <table> tag (end tag required)  #-- <table> tag (end tag required)
   #       <table> also ends any prior <p> that is not closed.
   #               but, unless I allow <p>'s to nest, that's the
   #               only way I could think of to allow <p> in 
   #               <tr> <th> bodies
   #
 #list of supported attributes: border,width,TeXwidth  #list of supported attributes: border,width,TeXwidth
 sub start_table {  sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my ($textwidth,$currentstring)=('','');      my $textwidth = '';
       my $currentstring = &end_p();
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $aa = {};   my $aa = {};
  push @Apache::londefdef::table, $aa;    push @Apache::londefdef::table, $aa; 
  $Apache::londefdef::table[-1]{'row_number'} = -1;   $Apache::londefdef::table[-1]{'row_number'} = -1;
         #table's width           #maximum table's width (default coincides with text line length)
         #default coincides with text line length  
  if ($#Apache::londefdef::table==0) {   if ($#Apache::londefdef::table==0) {
     $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm      $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
     $textwidth=~/(\d+\.?\d*)/;      $textwidth=~/(\d+\.?\d*)/;
     $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame      $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
  } else {   } else {
Line 1787  sub start_table { Line 1910  sub start_table {
  $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];    $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; 
     } else {      } else {
               #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly                #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
  my $textwidth=$Apache::londefdef::table[-2]{'width'};   $textwidth=$Apache::londefdef::table[-2]{'width'};
  for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {   for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
     $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];      $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
  }   }
Line 1808  sub start_table { Line 1931  sub start_table {
     $TeXwidth=~/(\d+)/;      $TeXwidth=~/(\d+)/;
             $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;              $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
  } else {   } else {
       $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
     $Apache::londefdef::table[-1]{'width'}=$TeXwidth;      $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
  }           }        
         #table's border          #table's border
Line 1824  sub start_table { Line 1948  sub start_table {
     $Apache::londefdef::table[-1]{'vvinc'} = '';      $Apache::londefdef::table[-1]{'vvinc'} = '';
  }   }
  if ($#Apache::londefdef::table==0) {   if ($#Apache::londefdef::table==0) {
     $Apache::londefdef::table[-1]{'output'}='\newline\setlength{\tabcolsep}{1 mm}';      #    Note that \newline seems to destroy the alignment envs.
       # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
       $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
  }   }
  $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';   $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
         $Apache::londefdef::table[-1]{'TeXlen'}=[];          $Apache::londefdef::table[-1]{'TeXlen'}=[];
         $Apache::londefdef::table[-1]{'objectlen'}=[];          $Apache::londefdef::table[-1]{'objectlen'}=[];
           $Apache::londefdef::table[-1]{'objectsignal'}=[];
         $Apache::londefdef::table[-1]{'maxlen'}=[];          $Apache::londefdef::table[-1]{'maxlen'}=[];
         $Apache::londefdef::table[-1]{'minlen'}=[];          $Apache::londefdef::table[-1]{'minlen'}=[];
         $Apache::londefdef::table[-1]{'content'}=[];          $Apache::londefdef::table[-1]{'content'}=[];
         $Apache::londefdef::table[-1]{'align'}=[];          $Apache::londefdef::table[-1]{'align'}=[];
         $currentstring='\keephidden{NEW TABLE ENTRY}';          $currentstring.='\keephidden{NEW TABLE ENTRY}';
    }     }
     return $currentstring;      return $currentstring;
 }  }
Line 1857  sub end_table { Line 1984  sub end_table {
  }   }
         #free space and number of empty columns          #free space and number of empty columns
  my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);   my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
 ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");   if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} 
  for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
     if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
  $empty_columns++;   $empty_columns++;
Line 1888  sub end_table { Line 2015  sub end_table {
     $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];      $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
  }   }
     }      }
     if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger      if ($max_len[$jn]<$localmin) {
     if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger   $max_len[$jn]=$localmin;
        $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
       }#object size is bigger
       if ($min_len[$jn]<$localmin) {
    $min_len[$jn]=$localmin;
    $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
       }#object size is bigger
     if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
  $min_len[$jn]=0;   $min_len[$jn]=0;
  $max_len[$jn]=0;   $max_len[$jn]=0;
Line 1904  sub end_table { Line 2037  sub end_table {
     $space_neeeded=$space_neeeded+$max_len[$jn];      $space_neeeded=$space_neeeded+$max_len[$jn];
  }   }
  if ($space_neeeded<=$available_space) {   if ($space_neeeded<=$available_space) {
 ##    &Apache::lonnet::logthis("I am in position 1: $space_neeeded <= $available_space");  
     for (my $jn=0;$jn<=$#max_len;$jn++) {      for (my $jn=0;$jn<=$#max_len;$jn++) {
  if ($fwidth[$jn]==0) {   if ($fwidth[$jn]==0) {
     $fwidth[$jn]=$max_len[$jn];      $fwidth[$jn]=$max_len[$jn];
Line 1917  sub end_table { Line 2049  sub end_table {
  $space_neeeded+=$min_len[$jn];   $space_neeeded+=$min_len[$jn];
     }      }
     if ($space_neeeded>$available_space) {      if ($space_neeeded>$available_space) {
 ## &Apache::lonnet::logthis("I am in position 2");  
  $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';   $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
  for (my $jn=0;$jn<=$#max_len;$jn++) {   for (my $jn=0;$jn<=$#max_len;$jn++) {
     if ($fwidth[$jn]==0) {      if ($fwidth[$jn]==0) {
  $fwidth[$jn]=$min_len[$jn];   $fwidth[$jn]=$min_len[$jn];
     }      }
  }   }
    #check if we have objects which can be scaled
    my $how_many_to_scale=0;
    my @to_scale=();
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
    $how_many_to_scale++;
    push @to_scale, $jn;
       }
    }
    if ($how_many_to_scale>0) {
       my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
       foreach my $jn (@to_scale) {
    for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
       $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
       if ($1 ne '') {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    $current_length=$current_length-$space_to_adjust;
    $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
       }
       $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
       if ($1 ne '') {
    my $current_length=$1;
    $current_length=$current_length-$space_to_adjust;
    $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
       }
    }
    $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
       }
    }
     } else {      } else {
       #step 3. adjustment over minimal + corrections        #step 3. adjustment over minimal + corrections
 ## &Apache::lonnet::logthis("I am in position 3");  
  my $enlarge_coef=$available_space/$space_neeeded;   my $enlarge_coef=$available_space/$space_neeeded;
  my $acsessive=0;   my $acsessive=0;
  for (my $jn=0;$jn<=$#min_len;$jn++) {   for (my $jn=0;$jn<=$#min_len;$jn++) {
Line 1952  sub end_table { Line 2112  sub end_table {
     $fwidth[$jn]=$adjust[$jn];      $fwidth[$jn]=$adjust[$jn];
  }   }
     }      }
    } else {
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    $fwidth[$jn]=$adjust[$jn];
       }
  }   }
     }      }
  }   }
         #recalculation for the use of all available width if width is defined in %          #use all available width if it is defined in % or as TeXwidth
         if ($Apache::londefdef::table[-1]{'percent'}==1) {          if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
     my $current=0;       my $current=0; 
     for (my $i=0;$i<=$#fwidth;$i++) {        for (my $i=0;$i<=$#fwidth;$i++) {  
  $current+=$fwidth[$i];   $current+=$fwidth[$i];
Line 1995  sub end_table { Line 2159  sub end_table {
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     for (my $jn=0;$jn<=$#fwidth;$jn++) {      for (my $jn=0;$jn<=$#fwidth;$jn++) {
  if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {   if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
     $output.='\begin{center}';      $output.='\vspace*{-6 mm}\begin{center}';
  } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {   } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
     $output.=' \hfill \llap{'      $output.=' \hfill \llap{'
  }   }
  $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];   $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
  if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {   if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
     $output.='\end{center}';      $output.='\end{center}\vspace*{-6 mm}';
  } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {   } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
     $output.='} ';      $output.='} ';
  }   }
Line 2009  sub end_table { Line 2173  sub end_table {
     }      }
     $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';      $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
  }   }
  $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\vskip 0 mm ';   # Note that \newline destroys alignment env's produced  by e.g. <div>
    # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
    $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
  if ($#Apache::londefdef::table > 0) {       if ($#Apache::londefdef::table > 0) {    
     my $inmemory = $Apache::londefdef::table[-1]{'output'};      my $inmemory = $Apache::londefdef::table[-1]{'output'};
     pop @Apache::londefdef::table;      pop @Apache::londefdef::table;
Line 2050  sub start_tr { Line 2216  sub start_tr {
                   
 sub end_tr {  sub end_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any pending <p> in the row.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring .= $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::TD_redirection) {   if ($Apache::londefdef::TD_redirection) {
     &end_td_tex($parstack,$parser,$safeeval);          &end_td_tex($parstack,$parser,$safeeval);    
Line 2137  sub end_td_tex { Line 2303  sub end_td_tex {
     push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;      push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
     push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
       my $garbage_data=$data;
       my $fwidth=0;
               while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       $data=~s/\\\\\s*$//; 
  } else {     } else {  
     $data=~s/^\s+(\S.*)/$1/;       $data=~s/^\s+(\S.*)/$1/; 
     $data=~s/(.*\S)\s+$/$1/;      $data=~s/(.*\S)\s+$/$1/;
Line 2159  sub end_td_tex { Line 2345  sub end_td_tex {
  $current_length=2.5*&LATEX_length($data);   $current_length=2.5*&LATEX_length($data);
                     my @words=split(/ /,$data);                      my @words=split(/ /,$data);
     foreach my $word (@words) {      foreach my $word (@words) {
  my $lengthword=2.5*&LATEX_length($word);   my $lengthword=2*&LATEX_length($word);
  if ($min_length<$lengthword) {$min_length=$lengthword;}   if ($min_length<$lengthword) {$min_length=$lengthword;}
     }      }
     }      }
Line 2195  sub start_th { Line 2381  sub start_th {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);   $Apache::londefdef::TD_redirection = 1;
  if ($what_to_push eq '') {   &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
     $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;  
  }  
  push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;  
  $Apache::londefdef::table[-1]{'counter_columns'}++;  
  &Apache::lonxml::startredirection();  
     }       } 
     return $currentstring;      return $currentstring;
 }     }   
            
   sub tagg_check {
       my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
       my @ar=@$parstack; 
       for (my $i=$#ar-1;$i>=0;$i--) {
    if (lc($$tagstack[$i]) eq $good_tag) {
       &start_th_tex($parstack,$parser,$safeeval);
       last;
    } elsif (lc($$tagstack[$i]) eq $bad_tag) {
       splice @ar, $i+1;
       &end_th_tex(\@ar,$parser,$safeeval);
       &start_th_tex($parstack,$parser,$safeeval);
       last;
    }
       }
       return '';
   }
    
   sub start_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
       if ($alignchar eq '') {
    $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
       }
       push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
       $Apache::londefdef::table[-1]{'counter_columns'}++;
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    my $current_length=&recalc($TeXwidth);
    $current_length=~/(\d+\.?\d*)/;
    push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
       }
       &Apache::lonxml::startredirection();
       return '';
   }
   
   sub end_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $current_row = $Apache::londefdef::table[-1]{'row_number'};
       my $data=&Apache::lonxml::endredirection();
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       } else {
    if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
       my $garbage_data=$data;
       my $fwidth=0;
               while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
    my $current_length=$1;
    if ($fwidth<$current_length) {$fwidth=$current_length;}
    $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    } else {  
       $data=~s/^\s+(\S.*)/$1/; 
       $data=~s/(.*\S)\s+$/$1/;
       $data=~s/(\s)+/$1/;
       my ($current_length,$min_length)=(0,0);
       if ($data=~/\\vskip/) {
                   my $newdata=$data;
    $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
    my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
    foreach my $elementdata (@newdata) {
       my $lengthnewdata=2.5*&LATEX_length($elementdata);
       if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
                       my @words=split(/ /,$elementdata);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
    }
       } else {
    $current_length=2.5*&LATEX_length($data);
                       my @words=split(/ /,$data);
       foreach my $word (@words) {
    my $lengthword=2*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
    }        
       }
    for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
       $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
    }
       #make data bold
       $data='\textbf{'.$data.'}';
       push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
       return'';
   }
   
 sub end_th {  sub end_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any open <p> in the row.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring .= $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $current_row = $Apache::londefdef::table[-1]{'row_number'};          $Apache::londefdef::TD_redirection =0;
  my $data=&Apache::lonxml::endredirection();   &end_th_tex($parstack,$parser,$safeeval);
  my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);  
  if (defined $TeXwidth) {  
     my $current_length=&recalc($TeXwidth);  
     $current_length=~/(\d+)/;  
     $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
     $Apache::londefdef::table[-1]{'length'} .= '0,';  
  } else {  
     if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {  
  my $current_length=&recalc($1);  
  $current_length=~/(\d+)/;  
  $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
  $Apache::londefdef::table[-1]{'length'} .= '0,';  
     } else {       
  $data=~/^\s*(\S.*)/;  
  $data=$1;  
  $data=~/(.*\S)\s*$/;  
  $data=$1;  
  my $current_length=2*length($data);  
  $Apache::londefdef::table[-1]{'length'} .= $current_length.',';  
  $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';  
     }          
  }  
  for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {                                  
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;  
  }  
  $data='\textbf{'.$data.'}';  
  @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};  
     }      }
     return $currentstring;      return $currentstring;
 }  }
        
 #-- <img> tag (end tag forbidden)  #-- <img> tag (end tag forbidden)
   #
   #  Render the <IMG> tag.
   #     <IMG> has the following attributes (in addition to the 
   #     standard HTML ones:
   #      TeXwrap   - Governs how the tex target will try to wrap text around
   #                  horizontally aligned images.
   #      TeXwidth  - The width of the image when rendered for print (mm).
   #      TeXheight - The height of the image when rendered for print (mm)
   #         (Note there seems to also be support for this as a % of page size)
   #      
 sub start_img {  sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,      my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
  undef,1);   undef,1);
     if (not $src and ($target eq 'web' or $target eq 'tex')) {       if (not $src and ($target eq 'web' or $target eq 'tex')) { 
  my $inside = &Apache::lonxml::get_all_text("/img",$parser);   my $inside = &Apache::lonxml::get_all_text("/img",$parser);
  &Apache::lonnet::logthis("inside was $inside");  
  return '';   return '';
     }      }
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
     my $currentstring = '';      my $currentstring = '';
     my $scaling = .3;      my $scaling = .3;
   
      # Render unto browsers that which are the browser's...
   
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($ENV{'browser.imagesuppress'} ne 'on') {   if ($env{'browser.imagesuppress'} ne 'on') {
     $currentstring.= $token->[4];      $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
  } else {   } else {
     my $alttag= &Apache::lonxml::get_param      my $alttag= &Apache::lonxml::get_param
  ('alt',$parstack,$safeeval,undef,1);   ('alt',$parstack,$safeeval,undef,1);
Line 2269  sub start_img { Line 2540  sub start_img {
     }      }
     $currentstring.='[IMAGE: '.$alttag.']';      $currentstring.='[IMAGE: '.$alttag.']';
  }   }
   
    # and render unto TeX that which is LaTeX
   
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);   #
    #  The alignment will require some superstructure to be put around
    #  the \includegraphics stuff.  At present we can only partially
    #  simulate the alignments offered by html.
    #
    #
    my $align = lc(&Apache::lonxml::get_param('align', 
     $parstack,
     $safeeval,
     undef,1));
    if(!$align) {
       $align = "bottom"; # This is html's default so it's ours too.
    }
    #
    &Apache::lonxml::debug("Alignemnt = $align");
    #  LaTeX's image/text wrapping is really bad since it wants to
    #  make figures float.  
           #   The user has the optional parameter (applicable only to l/r
    # alignment to use the picins/parpic directive to get wrapped text
    # this is also imperfect.. that's why we give them a choice...
    # so they can't yell at us for our choice.
    #
    my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
       $parstack,
       $safeeval,
       undef,0);
    &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
    if(!$latex_rendering) {
       $latex_rendering = "parbox";
    }
    &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
   
  #if original gif/jpg/png file exist do following:   #if original gif/jpg/png file exist do following:
    my $origsrc=$src;
    my ($path,$file) = &get_eps_image($src);
    $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
    &Apache::lonxml::debug("path = $path file = $file src = $src");
  if (-e $src) {   if (-e $src) {
     #what is the image size?      &Apache::lonxml::debug("$src exists");
     my $width_param=&image_size($src,$scaling,$parstack,$safeeval);      my ($height_param,$width_param)=
             my ($file,$path)=&file_path($src);    &image_size($origsrc,0.3,$parstack,$safeeval);
     my $newsrc = $src;      my $destpath = $path;
     $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;      $destpath    =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
     $file=~s/\.(gif|jpg|png)$/.eps/i;      my $destfile = $file;
     #where can we find the picture?      $destfile    =~ s/ /\_/g;
     if (-e $newsrc) {      my $size;
  #eps counterpart for image exist       if ($width_param)  { $size.='width='.$width_param.' mm,'; }
  if ($path) {      if ($height_param) { $size.='height='.$height_param.' mm]'; }
     $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';      $size='['.$size;
       $size=~s/,$/]/; 
       $currentstring .= '\graphicspath{{'.$destpath.'}}'
    .'\includegraphics'.$size.'{'.$destfile.'} ';
   
       #    If there's an alignment specification we need to honor it here.
       #    For the horizontal alignments, we will also honor the
       #    value of the latex specfication.  The default is parbox,
       #    and that's used for illegal values too.  
       #    
       #    Even though we set a default alignment value, the user
       #    could have given us an illegal value.  In that case we
       #    just use the default alignment of bottom..
       if      ($align eq "top")    {
    $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
       } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
    my $offset = $height_param/2;
    $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
       } elsif ($align eq "left")   { 
    if ($latex_rendering eq "parpic") { 
       $currentstring = '\parpic[l]{'.$currentstring.'}';
    } else {                                     # parbox rendering
       $currentstring = "\\strut\\newline\n".
    '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
  }   }
     } else {      } elsif ($align eq "right")  {   
  #there is no eps counterpart for image - check for ps one   if ($latex_rendering eq "parpic") {
  $newsrc =~ s/\.eps$/\.ps/;      $currentstring = '\parpic[r]{'.$currentstring.'}';
  if (-e $newsrc) {   } else {                                 # parbox rendering. 
     #ps counterpart for image exist       $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
     $file =~ s/\.eps$/\.ps/;               .$currentstring.'\end{flushright}} \newline'."\n";
     if ($path) {  
  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';  
     }  
  } else {  
     #care about eps dynamical generation  
     $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);  
  }   }
       } else { # Bottom is also default.
    # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
     }      }
  } else {   } else {
       &Apache::lonxml::debug("$src does not exist");
     #original image file doesn't exist so check the alt attribute      #original image file doesn't exist so check the alt attribute
     my $alt =       my $alt = 
  &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);   &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
Line 2307  sub start_img { Line 2636  sub start_img {
  $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);   $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
     }      }
   
     if ($alt) {      if ($alt) { $currentstring .= ' '.$alt.' '; }
  $currentstring .= ' '.$alt.' ';  
     } else {  
  #<allow> tag will care about replication   
     }  
  }   }
   
    # And here's where the semi-quote breaks down: allow the user
           # to edit the beast as well by rendering the problem for edit:
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $currentstring .=&Apache::edit::tag_start($target,$token);   $currentstring .=&Apache::edit::tag_start($target,$token);
  $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).   $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
Line 2323  sub start_img { Line 2651  sub start_img {
  $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';   $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
  $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);   $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
  $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);   $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
    $currentstring .=&Apache::edit::select_arg('Alignment:','align',
      ['','bottom','middle','top','left','right'],$token,5);
    $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
      ['', 'parbox', 'parpic'], $token, 2);
  $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();   $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);   my $src=    &Apache::lonxml::get_param('src',$parstack,$safeeval);
  my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);   my $alt=    &Apache::lonxml::get_param('alt',$parstack,$safeeval);
  my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);   my $width=  &Apache::lonxml::get_param('width',$parstack,$safeeval);
  my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);   my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
   
   
  $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';   $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
  if ($width) { $currentstring.=' width="'.$width.'" '; }   if ($width) { $currentstring.=' width="'.$width.'" '; }
  if ($height) { $currentstring.=' height="'.$height.'" '; }   if ($height) { $currentstring.=' height="'.$height.'" '; }
Line 2336  sub start_img { Line 2670  sub start_img {
  my ($osrc,$owidth,$oheight)=   my ($osrc,$owidth,$oheight)=
     ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
  my $ctag=&Apache::edit::get_new_args($token,$parstack,   my $ctag=&Apache::edit::get_new_args($token,$parstack,
      $safeeval,'src','alt',       $safeeval,'src','alt','align',
      'TeXwidth','TeXheight',       'TeXwidth','TeXheight', 'TeXwrap',
      'width','height');       'width','height');
  my ($nsrc,$nwidth,$nheight)=   my ($nsrc,$nwidth,$nheight)=
     ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
  my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);   my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
  &image_replication($loc);   &image_replication($loc);
  my ($iwidth,$iheight);   my ($iwidth,$iheight);
  &Apache::lonnet::logthis("loc is $loc");  
  if (-e $loc) {   if (-e $loc) {
     my $image = Image::Magick->new;      my $image = Image::Magick->new;
     $image->Read($loc);      $image->Read($loc);
Line 2374  sub start_img { Line 2707  sub start_img {
  }   }
  if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}   if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
     }      }
   
     return $currentstring;      return $currentstring;
 }  }
   
Line 2401  sub start_applet { Line 2735  sub start_applet {
           
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($ENV{'browser.appletsuppress'} ne 'on') {   if ($env{'browser.appletsuppress'} ne 'on') {
     $currentstring = $token->[4];      $currentstring = &Apache::lonenc::encrypt_ref($token,
     {'code'=>$code,
      'archive'=>$archive}
     );
  } else {   } else {
     my $alttag= &Apache::lonxml::get_param('alt',$parstack,      my $alttag= &Apache::lonxml::get_param('alt',$parstack,
    $safeeval,undef,1);     $safeeval,undef,1);
Line 2444  sub start_embed { Line 2781  sub start_embed {
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($ENV{'browser.embedsuppress'} ne 'on') {   if ($env{'browser.embedsuppress'} ne 'on') {
     $currentstring = $token->[4];      $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
  } else {   } else {
     my $alttag=&Apache::lonxml::get_param      my $alttag=&Apache::lonxml::get_param
  ('alt',$parstack,$safeeval,undef,1);   ('alt',$parstack,$safeeval,undef,1);
Line 2481  sub start_param { Line 2818  sub start_param {
  &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);   &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        my %toconvert;
    my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
    if ($src) { $toconvert{'src'}= $src; }
    my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
       undef,1);
    if ($name=~/^cabbase$/i) {
       $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
      $safeeval,undef,1);
    }
    $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
     }       } 
     return $currentstring;      return $currentstring;
Line 2504  sub start_allow { Line 2850  sub start_allow {
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);      $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
  &Apache::lonnet::clutter($src);   &Apache::lonnet::clutter($src);
     &image_replication($src);      if ($target eq 'tex') { &image_replication($src); }
     my $result;      my $result;
     if ($target eq 'edit') {      if ($target eq 'edit') {
  $result .=&Apache::edit::tag_start($target,$token);   $result .=&Apache::edit::tag_start($target,$token);
Line 2528  sub end_allow { Line 2874  sub end_allow {
 #-- <frameset>  #-- <frameset>
 sub start_frameset {  sub start_frameset {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = ''; # Close any pending para.
     if ($target eq 'web') {       if ($target eq 'web') { 
  if (!$Apache::lonxml::registered &&   if (!$Apache::lonxml::registered &&
     $ENV{'request.state'} eq 'published') {      $env{'request.state'} eq 'published') {
     $currentstring.='<head>'.      $currentstring.='<head>'.
  &Apache::lonmenu::registerurl(undef,$target).'</head>';   &Apache::lonmenu::registerurl(undef,$target).'</head>';
  }   }
Line 2597  sub end_xmp { Line 2943  sub end_xmp {
 #-- <pre> (end tag required)  #-- <pre> (end tag required)
 sub start_pre {  sub start_pre {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # close off pending <p>
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
Line 2660  sub end_externallink { Line 3006  sub end_externallink {
 #-- <blankspace heigth="">  #-- <blankspace heigth="">
 sub start_blankspace {  sub start_blankspace {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # closes off any unclosed <p>
     if ($target eq 'tex') {      if ($target eq 'tex') {
  my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);   my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
  $currentstring .= '\vskip '.$howmuch.' ';   $currentstring .= '\vskip '.$howmuch.' ';
Line 2813  sub end_blink { Line 3159  sub end_blink {
 #-- <blockquote> tag (end tag required)  #-- <blockquote> tag (end tag required)
 sub start_blockquote {  sub start_blockquote {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any unclosed <p>
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 3136  sub end_marquee { Line 3482  sub end_marquee {
 #-- <multicol> tag (end tag required)  #-- <multicol> tag (end tag required)
 sub start_multicol {  sub start_multicol {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any pending <p>
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 3334  sub end_server { Line 3680  sub end_server {
 #-- <spacer> tag (end tag forbidden)  #-- <spacer> tag (end tag forbidden)
 sub start_spacer {  sub start_spacer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any open <p> tag.
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 3496  sub image_replication { Line 3842  sub image_replication {
     $pssrc  =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;      $pssrc  =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
     if (not -e $epssrc && not -e $pssrc) {      if (not -e $epssrc && not -e $pssrc) {
  my $result=&Apache::lonnet::repcopy($epssrc);   my $result=&Apache::lonnet::repcopy($epssrc);
  if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }   if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
     }      }
     return '';      return '';
 }  }
   #
   #   Get correct sizing parameter for an image given
   #   it's initial ht. and wid.  This allows sizing of
   #   images that are generated on-the-fly (e.g. gnuplot)
   #   as well as serving as a utility for image_size.
   # 
   #  Parameter:
   #        height_param
   #        width_param    - Initial picture dimensions.
   #        scaling        - A scale factor.
   #        parstack,      - the current stack of tag attributes 
   #                         from the xml parser
   #        safeeval,      - pointer to the safespace
   #        depth,         - from what level in the stack to look for attributes
   #                         (assumes -1 if unspecified)
   #        cis            - look for attrubutes case insensitively
   #                         (assumes false)
   #
   # Returns:
   #   height, width   - new dimensions.
   #
   sub resize_image {
       my ($height_param, $width_param, $scaling,
    $parstack, $safeeval, $depth, $cis) = @_;
   
       # First apply the scaling...
   
       $height_param = $height_param * $scaling;
       $width_param  = $width_param  * $scaling;
   
 sub image_size {  
     my ($src,$scaling,$parstack,$safeeval)=@_;  
     #size of image from gif/jpg/jpeg/png   
     my $image = Image::Magick->new;  
     my $current_figure = $image->Read($src);  
     my $width_param = $image->Get('width') * $scaling;;  
     my $height_param = $image->Get('height') * $scaling;;  
     undef $image;  
     #do we have any specified LaTeX size of the picture?      #do we have any specified LaTeX size of the picture?
     my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);      my $toget='TeXwidth'; 
     my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);      if ($cis) { 
    $toget=lc($toget); 
       }
       my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
         $safeeval,$depth,$cis);
       $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
       my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
          $safeeval,$depth,$cis);
     #do we have any specified web size of the picture?      #do we have any specified web size of the picture?
     my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,      my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
    undef,1);     $depth,1);
     if ($TeXwidth ne '') {        if ($TeXwidth) { 
    my $old_width_param=$width_param;
  if ($TeXwidth=~/(\d+)\s*\%/) {   if ($TeXwidth=~/(\d+)\s*\%/) {
     $width_param = $1*$ENV{'form.textwidth'}/100;      $width_param = $1*$env{'form.textwidth'}/100;
  } else {    } else { 
     $width_param = $TeXwidth;      $width_param = $TeXwidth;
  }   }
     } elsif ($TeXheight ne '') {   if ($TeXheight) {
  $width_param = $TeXheight/$height_param*$width_param;      $height_param = $TeXheight;
     } elsif ($width ne '') {   } elsif ($old_width_param) {
  $width_param = $width*$scaling;            $height_param=$TeXwidth/$old_width_param*$height_param;
    }
       } elsif ($TeXheight) {
    $height_param = $TeXheight;
    if ($height_param) {
       $width_param  = $TeXheight/$height_param*$width_param;
    }
       } elsif ($width) {
    my $old_width_param=$width_param;
    $width_param = $width*$scaling;
    if ($old_width_param) {
       $height_param=$width_param/$old_width_param*$height_param;
    }
       }
       if ($width_param > $env{'form.textwidth'}) {
           my $old_width_param=$width_param;
    $width_param =0.95*$env{'form.textwidth'};
    if ($old_width_param) {
       $height_param=$width_param/$old_width_param*$height_param;
    }
     }      }
     if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}  
     return $width_param;      return ($height_param, $width_param);
   }
   
   sub image_size {
       my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
   
       #size of image from gif/jpg/jpeg/png 
       my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
       if (-e $ressrc) {
    $src = $ressrc;
       }
       my $image = Image::Magick->new;
       my $current_figure = $image->Read($src);
       my $width_param = $image->Get('width');
       my $height_param = $image->Get('height');
       &Apache::lonxml::debug("Image magick says: $src :  Height = $height_param width = $width_param");
       undef($image);
   
       ($height_param, $width_param) = &resize_image($height_param, $width_param,
     $scaling, $parstack, $safeeval, 
     $depth, $cis);
   
       return ($height_param, $width_param);
   }
   
   sub image_width {
       my ($height, $width) = &image_size(@_);
       return $width;
   }
   #  Not yet 100% sure this is correct in all circumstances..
   #  due to my uncertainty about mods to image_size.
   #
   sub image_height {
       my ($height, $width) = &image_size(@_);
       return $height;
   }
   
   sub get_eps_image {
       my ($src)=@_;
       my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
       &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
       $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
       $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
       &Apache::lonxml::debug("Filelocation gives: $src");
       if (! -e $src) {
    &Apache::lonxml::debug("$src does not exist");
    if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
       &Apache::lonxml::debug("Repcopy of $src failed (1)");
       #if replication failed try to find ps file
       $src=~s/\.eps$/\.ps/;
       &Apache::lonxml::debug("Now looking for $src");
       #if no ps file try to replicate it.
       my $didrepcopy = &Apache::lonnet::repcopy($src);
       &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
       if ( (not -e $src) ||
    ($didrepcopy ne 'ok')) {
    &Apache::lonxml::debug("Failed to find or replicate $src");
   
    #if replication failed try to produce eps file dynamically
    $src=~s/\.ps$/\.eps/;
    my $temp_file;
    open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
    my $newsrc=$orig_src;
    $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
    &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
    print FILE "$newsrc\n";
    close FILE;
    $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
    $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
       }
    }
       }
       my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
       &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
       return ($path.'/',$file);
 }  }
   
 sub eps_generation {  sub eps_generation {
     my ($src,$file,$width_param) = @_;           my ($src,$file,$width_param) = @_;     
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";      my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
     my $temp_file = Apache::File->new('>>'.$filename);       my $temp_file = Apache::File->new('>>'.$filename); 
     print $temp_file "$src\n";      print $temp_file "$src\n";
     my $newsrc = $src;      my $newsrc = $src;
Line 3541  sub eps_generation { Line 4009  sub eps_generation {
     $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;      $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
     $newsrc=~s/\/\.\//\//;      $newsrc=~s/\/\.\//\//;
     $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;      $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
     return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';      if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
    $newsrc=~s/\/home\/httpd\/lonUsers//;
    $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
       }
       if ($newsrc=~/\/userfiles\//) {
    return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
       } else {
    return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
       }
 }  }
   
 sub file_path {       sub file_path {     
Line 3593  sub LATEX_length { Line 4069  sub LATEX_length {
     $garbage=~s|\\(\w+)\\|\\|g;        $garbage=~s|\\(\w+)\\|\\|g;  
     $garbage=~s|\\(\w+)(\s*)|$2|g;        $garbage=~s|\\(\w+)(\s*)|$2|g;  
     $garbage=~s|\+|11|g;      $garbage=~s|\+|11|g;
   
     &Apache::lonnet::logthis("garbage was just $garbage");  
     my  $value=length($garbage);      my  $value=length($garbage);
     return $value;      return $value;
 }  }

Removed from v.1.210  
changed lines
  Added in v.1.281


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>