version 1.31, 2003/06/09 22:42:49
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version 1.33, 2003/08/01 14:22:07
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# |
# |
# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
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# July,August 2003 H. K. Ng |
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# |
#FIXME LATER assumes multiple possible submissions but only one is possible |
#FIXME LATER assumes multiple possible submissions but only one is possible |
#currently |
#currently |
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package Apache::imageresponse; |
package Apache::imageresponse; |
use strict; |
use strict; |
use Image::Magick; |
use Image::Magick; |
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use GD; |
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BEGIN { |
BEGIN { |
&Apache::lonxml::register('Apache::imageresponse',('imageresponse')); |
&Apache::lonxml::register('Apache::imageresponse',('imageresponse')); |
Line 312 sub start_image {
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Line 314 sub start_image {
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return $result; |
return $result; |
} |
} |
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sub get_image { |
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my ($imgsrc,$set_trans)=@_; |
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my $image; |
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if ($imgsrc !~ /\.(png|jpg|jpeg)$/i) { |
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my $conv_image = Image::Magick->new; |
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my $current_figure = $conv_image->Read('filename'=>$imgsrc); |
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$conv_image->Set('magick'=>'png'); |
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my @blobs=$conv_image->ImageToBlob(); |
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undef $conv_image; |
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$image = GD::Image->new($blobs[0]); |
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} else { |
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GD::Image->trueColor(1); |
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$image = GD::Image->new($imgsrc); |
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} |
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if ($set_trans && defined($image)) { |
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my $white=$image->colorExact(255,255,255); |
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if ($white != -1) { $image->transparent($white); } |
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} |
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return $image; |
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} |
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sub end_image { |
sub end_image { |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result; |
my $result; |
my $name = $Apache::imageresponse::curname; |
my $name = $Apache::imageresponse::curname; |
if ($target eq 'web') { |
if ($target eq 'web') { |
my $image = &Apache::lonxml::endredirection; |
my $image = &Apache::lonxml::endredirection; |
&Apache::lonxml::debug("out is $image"); |
&Apache::lonxml::debug("original image is $image"); |
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my $id=$Apache::inputtags::response['-1']; |
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my $temp=1; |
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my $x=$ENV{"form.HWVAL_$id:$temp.x"}; |
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my $y=$ENV{"form.HWVAL_$id:$temp.y"}; |
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if (defined ($x) && defined ($y)) { |
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&Apache::lonxml::debug("x and y defined as $x,$y"); |
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my $currentImage = &get_image('/home/httpd/html'.$image,1); |
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if (! defined($currentImage)) { |
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&Apache::lonnet::logthis('Unable to create image object for '.$image); |
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return ''; |
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} |
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my $red; |
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if (!($red = $currentImage->colorResolve(255,0,0))) { |
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$red = $currentImage->colorClosestHWB(255,0,0); |
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} |
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my $length = 6; |
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$currentImage->line($x-$length,$y-$length,$x+$length,$y+$length,$red); |
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$currentImage->line($x-$length,$y+$length,$x+$length,$y-$length,$red); |
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my ($nameWOext) = ($image =~ /^.*\/(.*)\..*$/); |
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&Apache::lonxml::debug("graph name $nameWOext"); |
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my $webImageName = "/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_". |
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$nameWOext.'.png'; #needs to be more random or specific |
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my $newImageName = '/home/httpd'.$webImageName; |
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my $imgfh = Apache::File->new('>'.$newImageName); |
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print $imgfh $currentImage->png; |
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$image = $webImageName; |
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} |
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&Apache::lonxml::debug("out image is $image"); |
if ( $Apache::imageresponse::conceptgroup |
if ( $Apache::imageresponse::conceptgroup |
&& !&Apache::response::showallfoils()) { |
&& !&Apache::response::showallfoils()) { |
$Apache::response::conceptgroup{"$name.image"} = $image; |
$Apache::response::conceptgroup{"$name.image"} = $image; |