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Diff for /loncom/homework/drawimage.pm between versions 1.5 and 1.12

version 1.5, 2004/03/16 23:08:23 version 1.12, 2024/04/05 04:05:08
Line 29 Line 29
 package Apache::drawimage;  package Apache::drawimage;
 use strict;  use strict;
 use Apache::loncommon;  use Apache::loncommon;
   use Apache::lonnet;
   use Apache::lonxml;
   use lib '/home/httpd/lib/perl/';
   use Time::HiRes qw(gettimeofday);
   use LONCAPA;
    
   
 my %args;  my %args;
 my $cgi_id;  my $cgi_id;
   my @cgi_ids;
 BEGIN {  BEGIN {
     &Apache::lonxml::register('Apache::drawimage',('drawimage'));      &Apache::lonxml::register('Apache::drawimage',('drawimage'));
 }  }
   
 sub start_drawimage {  sub start_drawimage {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     &Apache::lonxml::register('Apache::drawimage',('text','line','rectangle','arc','fill'));      &Apache::lonxml::register('Apache::drawimage',('text','line','rectangle','arc','fill','polygon','image'));
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
  $cgi_id=&Apache::loncommon::get_cgi_id();   my $new_id=&Apache::loncommon::get_cgi_id();
  %args=();   if ($cgi_id) { push(@cgi_ids,$cgi_id); } else { undef(%args); }
    $cgi_id=$new_id;
     }      }
       return '';
 }  }
   
 sub end_drawimage {  sub end_drawimage {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;      my $result;
       # need to call rand everytime start_script would evaluate, as the
       # safe space rand number generator and the global rand generator
       # are not separate
       my $randnumber;
       if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
           $target eq 'answer') {
           $randnumber=int(rand(1000));
       }
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
  if ($target eq 'web') {   my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
     my $width =    my $height =&Apache::lonxml::get_param('height',$parstack,$safeeval);
  &Apache::lonxml::get_param('width',$parstack,$safeeval);   my $bgcolor =&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
     my $height =   if (!$width) { $width=300; }
  &Apache::lonxml::get_param('height',$parstack,$safeeval);   if (!$height) { $height=300; }
     my $bgcolor =          $args{"cgi.$cgi_id.BGCOLOR"}=join(':',($bgcolor));
  &Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);          if ($target eq 'tex') {
     if (!$width) { $width=300; }              my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1);
     if (!$height) { $height=300; }              if (!$texwidth) { $texwidth='90'; }
               $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height,$texwidth));
               my $tmpdir = LONCAPA::tempdir(); # Where temporary files live:
               ## Determine filename
               my ($seconds, $microseconds) = gettimeofday;
               my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
                              '_'.$seconds.'_'.$microseconds.'_'.$$.$randnumber.'_drawimage.eps';
               $args{"cgi.$cgi_id.EPSFILE"} = $env{'user.name'}.'_'.$env{'user.domain'}.
                                              '_'.$seconds.'_'.$microseconds.'_'.$$.$randnumber.
                                              '_drawimage.eps';
               $result = "%DYNAMICIMAGE:$width:$height:$texwidth\n";
               $result .= '\graphicspath{{'.$tmpdir.'}}'."\n";
               $result .= '\includegraphics[width='.$texwidth.' mm]{'.$filename.'}';
               &Apache::lonxml::register_ssi('/adm/randomlabel.png?token='.$cgi_id);
           } else {
       $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height));
     $result.="<img width='$width' height='$height'      $result.="<img width='$width' height='$height'
                            src='/adm/randomlabel.png?token=$cgi_id' />\n";                             src='/adm/randomlabel.png?token=$cgi_id' />\n";
     $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height));          }
     $args{"cgi.$cgi_id.BGCOLOR"}=join(':',($bgcolor));   &Apache::lonnet::appenv(\%args);
     &Apache::lonnet::appenv(%args);   if (@cgi_ids) {
  } elsif ($target eq 'tex') {      $cgi_id=pop(@cgi_ids);
     #FIXME generate image some how   } else {
     #probably Simple::PostScript      undef($cgi_id);
  }   }
       } elsif ($target eq 'edit') {
       } elsif ($target eq 'modified') {
     }      }
     &Apache::lonxml::deregister('Apache::drawimage',('line','rectangle'));      
       &Apache::lonxml::register('Apache::drawimage',
         ('text','line','rectangle','arc','fill',
          'polygon'));
     return $result;      return $result;
 }  }
   
Line 76  sub start_text { Line 113  sub start_text {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;      my $result;
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
    &Apache::lonxml::startredirection();
       }
       return $result;
   }
   
   sub end_text {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web' || $target eq 'tex') {
         my $x     = &Apache::lonxml::get_param('x',$parstack,$safeeval);          my $x     = &Apache::lonxml::get_param('x',$parstack,$safeeval);
         my $y     = &Apache::lonxml::get_param('y',$parstack,$safeeval);          my $y     = &Apache::lonxml::get_param('y',$parstack,$safeeval);
         my $font  = &Apache::lonxml::get_param('font',$parstack,$safeeval);          my $font  = &Apache::lonxml::get_param('font',$parstack,$safeeval);
         my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);          my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
         my $direction = &Apache::lonxml::get_param('direction',$parstack,$safeeval);          my $direction = &Apache::lonxml::get_param('direction',$parstack,$safeeval);
  my $text  = &Apache::lonxml::get_all_text("/text",$parser);          my $rotation = &Apache::lonxml::get_param('rotation',$parstack,$safeeval);
         $text = &Apache::lonnet::escape($text);   my $text  = &Apache::lonxml::endredirection();
           $text = &escape($text);
         $args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:';          $args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:';
  my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;   my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
  $args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$text,$font,$color,$direction));   $args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$text,$font,$color,$direction,$rotation));
     }      }
     return $result;      return $result;
 }  }
   
 sub end_text {  
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;  
     my $result;  
     return $result;  
 }  
   
 sub start_line {  sub start_line {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;      my $result;
Line 194  sub end_fill { Line 235  sub end_fill {
     return $result;      return $result;
 }  }
   
   my @polygon;
   sub start_polygon {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       &Apache::lonxml::register('Apache::drawimage',('point'));
       if ($target eq 'web') {
    undef(@polygon);
       }
       return $result;
   }
   
   sub end_polygon {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;    
       if ($target eq 'web') {
    my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval);
    my $filled=&Apache::lonxml::get_param('filled',$parstack,$safeeval);
    my $open=&Apache::lonxml::get_param('open',$parstack,$safeeval);
    my $thickness = &Apache::lonxml::get_param('thickness',$parstack,
      $safeeval);
    my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
    $args{"cgi.$cgi_id.OBJTYPE"}.='POLYGON:';
    $args{"cgi.$cgi_id.OBJ$i"}=join(':',($color,$thickness,$open,$filled));
    $args{"cgi.$cgi_id.OBJEXTRA$i"}=join('-',@polygon);
       }
       &Apache::lonxml::deregister('Apache::drawimage',('point'));
       return $result;
   }
   
   sub start_point {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
    my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
           my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
    push (@polygon,"($x,$y)");
       }
       return $result;
   }
   
   sub end_point {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       return $result;
   }
   
   sub start_image {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web' || $target eq 'tex') {
    &Apache::lonxml::startredirection();
       }
       return $result;
   }
   
   sub end_image {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web' || $target eq 'tex') {
    my $bgimg=&Apache::lonxml::endredirection();
    my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
           my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
    my $clipx = &Apache::lonxml::get_param('clipx',$parstack,$safeeval);
           my $clipy = &Apache::lonxml::get_param('clipy',$parstack,$safeeval);
    my $clipwidth = 
       &Apache::lonxml::get_param('clipwidth',$parstack,$safeeval);
           my $clipheight = 
       &Apache::lonxml::get_param('clipheight',$parstack,$safeeval);
    my $scaledwidth = 
       &Apache::lonxml::get_param('scaledwidth',$parstack,$safeeval);
           my $scaledheight = 
       &Apache::lonxml::get_param('scaledheight',$parstack,$safeeval);
    my $transparent = 
       &Apache::lonxml::get_param('transparent',$parstack,$safeeval);
    $bgimg=&Apache::imageresponse::clean_up_image($bgimg);
    my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
    $args{"cgi.$cgi_id.OBJTYPE"}.='IMAGE:';
    $args{"cgi.$cgi_id.OBJ$i"} = 
       join(':',($x,$y,&escape($bgimg),$transparent,
         $clipx,$clipy,$scaledwidth,$scaledheight,$clipwidth,$clipheight));
       }
       return $result;
   }
 1;  1;
 __END__  __END__
Removed from v.1.5  
changed lines
  Added in v.1.12

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