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Diff for /loncom/homework/randomlylabel.pm between versions 1.1 and 1.15

version 1.1, 2002/11/08 14:37:42 version 1.15, 2004/02/11 21:51:15
Line 34  use strict; Line 34  use strict;
 use Image::Magick;  use Image::Magick;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::loncommon();  use Apache::loncommon();
   use GD();
   use GD::Polyline();
   use LWP::UserAgent();
   
   sub get_image {
       my ($imgsrc,$set_trans)=@_;
       my $image;
       &Apache::lonnet::logthis("imagesrc1 is $imgsrc");
       if ($imgsrc !~ m|^(/home/)|) {
    &Apache::lonnet::logthis("imagesrc2 is $imgsrc");
    if ($imgsrc !~ /^http:/) {
       $imgsrc="http://".$ENV{'HTTP_HOST'}.$imgsrc;
    }
    &Apache::lonnet::logthis("imagesrc3 is $imgsrc");
    &Apache::lonnet::logthis("LWP fetching image $imgsrc");
    my $ua=new LWP::UserAgent;
    my $request=new HTTP::Request('GET',"$imgsrc");
    $request->header(Cookie => $ENV{'HTTP_COOKIE'});
    my $file="/tmp/imagetmp".$$;
    my $response=$ua->request($request,$file);
    &Apache::lonnet::logthis("contetn is ".$response->content_type);
    &Apache::lonnet::logthis($response->is_success);
    &Apache::lonnet::logthis($response->status_line);
    if ($response->is_success) {
       if ($response->content_type !~ m-/(png|jpg|jpeg)$-i) {
    my $conv_image = Image::Magick->new;
    my $current_figure = $conv_image->Read('filename'=>$file);
    $conv_image->Set('magick'=>'png');
    my @blobs=$conv_image->ImageToBlob();
    undef $conv_image;
    $image = GD::Image->new($blobs[0]);
       } else {
    GD::Image->trueColor(1);
    $image = GD::Image->new($file);
       }
    }
       } elsif ($imgsrc !~ /\.(png|jpg|jpeg)$/i) {
    my $conv_image = Image::Magick->new;
    my $current_figure = $conv_image->Read('filename'=>$imgsrc);
    $conv_image->Set('magick'=>'png');
    my @blobs=$conv_image->ImageToBlob();
    undef $conv_image;
    $image = GD::Image->new($blobs[0]);
       } else {
    GD::Image->trueColor(1);
    $image = GD::Image->new($imgsrc);
       }
       if ($set_trans && defined($image)) {
    my $white=$image->colorExact(255,255,255);
    if ($white != -1) { $image->transparent($white); }
       }
       return $image;
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     $r->content_type('image/png');      $r->content_type('image/png');
     my (undef,$token) = split(/=/,$ENV{'QUERY_STRING'});      $r->send_http_header;
     &Apache::loncommon::get_unprocessed_cgi(      my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'});
                &Apache::lonnet::unescape($ENV{'imagerequest.'.$token}));      &Apache::lonnet::logthis("BGIMG is ".$ENV{"cgi.$id.BGIMG"});
     &Apache::lonnet::delenv('imagerequest\.'.$token);      my $image=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.BGIMG"}),0);
     my $image = Image::Magick->new;      if (! defined($image)) {
     my $current_figure = $image->Read('filename'=>$ENV{"form.BGIMG"});          &Apache::lonnet::logthis('Unable to create image object for -'.$id.'-'.
    $ENV{"cgi.$id.BGIMG"});
           return OK;
       }
     #binmode(STDOUT);      #binmode(STDOUT);
     for(my $i=0;$i<$ENV{"form.ICOUNT"};$i++) {      my $black;
  my $subimage = Image::Magick->new;      if (!($black=$image->colorResolve(0,0,0))) {
  $subimage->Read('filename' => $ENV{"form.IMG$i"});   $black = $image->colorClosestHWB(0,0,0);
  $image->Composite('x' => $ENV{"form.X$i"},'y' => $ENV{"form.Y$i"},      }
  'compose'=> 'Over', 'image' => $subimage);      for(my $i=0;$i<$ENV{"cgi.$id.ICOUNT"};$i++) {
  undef($subimage);   my $subimage=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.IMG$i"}),1);
     }   if (!defined($subimage)) {
     for(my $i=0;$i<$ENV{"form.COUNT"};$i++) {              &Apache::lonnet::logthis('Unable to create image object for '.
  $image->Annotate('text' => $ENV{"form.LB$i"},'x' => $ENV{"form.X$i"},                                   $ENV{"cgi.$id.BGIMG"});
  'y' => $ENV{"form.Y$i"}, 'font' => 'Times-Bold',              next;
  'pointsize' => 18, 'antialias' => 'true');          }
     }   $image->copy($subimage,$ENV{"cgi.$id.IX$i"},$ENV{"cgi.$id.IY$i"},
     $image->Set('magick'=>'png');       0,0,$subimage->getBounds());
     my @blobs=$image->ImageToBlob();      }
     $r->print($blobs[0]);      my $height=GD::Font->Giant->height;
       for(my $i=0;$i<$ENV{"cgi.$id.COUNT"};$i++) {
    $image->string(GD::gdGiantFont,$ENV{"cgi.$id.X$i"},
          $ENV{"cgi.$id.Y$i"}-$height,
          &Apache::lonnet::unescape($ENV{"cgi.$id.LB$i"}),$black);
       }
       for(my $i=0;$i<$ENV{"cgi.$id.LINECOUNT"};$i++) {
    my ($x1,$y1,$x2,$y2,$color,$width)=split(':',$ENV{"cgi.$id.LINE$i"});
    my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color);
    $red=hex($red);$green=hex($green);$blue=hex($blue);
    my $imcolor;
    if (!($imcolor = $image->colorResolve($red,$green,$blue))) {
       $imcolor = $image->colorClosestHWB($red,$green,$blue);
    }
    $image->setThickness($width);
           $image->line($x1,$y1,$x2,$y2,$imcolor);
       }
       for(my $i=0;$i<$ENV{"cgi.$id.BOXCOUNT"};$i++) {
    my ($x1,$y1,$x2,$y2,$color,$width)=split(':',$ENV{"cgi.$id.BOX$i"});
    if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
    if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
    my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color);
    $red=hex($red);$green=hex($green);$blue=hex($blue);
    my $imcolor;
    if (!($imcolor = $image->colorResolve($red,$green,$blue))) {
       $imcolor = $image->colorClosestHWB($red,$green,$blue);
    }
    $image->setThickness($width);
           $image->rectangle($x1,$y1,$x2,$y2,$imcolor);
       }
       for(my $i=0;$i<$ENV{"cgi.$id.POLYCOUNT"};$i++) {
    my ($color,$width,$open)=split(':',$ENV{"cgi.$id.POLYOPT$i"});
    my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color);
    $red=hex($red);$green=hex($green);$blue=hex($blue);
    my $imcolor;
    if (!($imcolor = $image->colorResolve($red,$green,$blue))) {
       $imcolor = $image->colorClosestHWB($red,$green,$blue);
    }
    my $polygon;
    if ($open) {
       $polygon = new GD::Polyline;
    } else {
       $polygon = new GD::Polygon;
    }
    foreach my $coord (split('-',$ENV{"cgi.$id.POLY$i"})) {
       my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/);
       $polygon->addPt($x,$y);
    }
    $image->setThickness($width);
    if ($open) {
       $image->polydraw($polygon,$imcolor);
    } else {
       $image->polygon($polygon,$imcolor);
    }
       }
       $image->setThickness(1);
       $r->print($image->png);
     return OK;      return OK;
 }  }
   
Removed from v.1.1  
changed lines
  Added in v.1.15

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