version 1.9, 2003/05/13 19:08:31
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version 1.15, 2004/02/11 21:51:15
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Line 34 use strict;
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Line 34 use strict;
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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(); |
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use GD::Polyline(); |
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use LWP::UserAgent(); |
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sub get_image { |
sub get_image { |
my ($imgsrc,$set_trans)=@_; |
my ($imgsrc,$set_trans)=@_; |
my $image; |
my $image; |
if ($imgsrc !~ /\.(png|jpg|jpeg)$/i) { |
&Apache::lonnet::logthis("imagesrc1 is $imgsrc"); |
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if ($imgsrc !~ m|^(/home/)|) { |
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&Apache::lonnet::logthis("imagesrc2 is $imgsrc"); |
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if ($imgsrc !~ /^http:/) { |
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$imgsrc="http://".$ENV{'HTTP_HOST'}.$imgsrc; |
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} |
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&Apache::lonnet::logthis("imagesrc3 is $imgsrc"); |
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&Apache::lonnet::logthis("LWP fetching image $imgsrc"); |
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my $ua=new LWP::UserAgent; |
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my $request=new HTTP::Request('GET',"$imgsrc"); |
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$request->header(Cookie => $ENV{'HTTP_COOKIE'}); |
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my $file="/tmp/imagetmp".$$; |
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my $response=$ua->request($request,$file); |
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&Apache::lonnet::logthis("contetn is ".$response->content_type); |
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&Apache::lonnet::logthis($response->is_success); |
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&Apache::lonnet::logthis($response->status_line); |
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if ($response->is_success) { |
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if ($response->content_type !~ m-/(png|jpg|jpeg)$-i) { |
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my $conv_image = Image::Magick->new; |
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my $current_figure = $conv_image->Read('filename'=>$file); |
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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($file); |
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} |
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} |
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} elsif ($imgsrc !~ /\.(png|jpg|jpeg)$/i) { |
my $conv_image = Image::Magick->new; |
my $conv_image = Image::Magick->new; |
my $current_figure = $conv_image->Read('filename'=>$imgsrc); |
my $current_figure = $conv_image->Read('filename'=>$imgsrc); |
$conv_image->Set('magick'=>'png'); |
$conv_image->Set('magick'=>'png'); |
Line 60 sub get_image {
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Line 91 sub get_image {
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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"}); |
my $image=&get_image($ENV{"form.BGIMG"},0); |
my $image=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.BGIMG"}),0); |
if (! defined($image)) { |
if (! defined($image)) { |
&Apache::lonnet::logthis('Unable to create image object for '. |
&Apache::lonnet::logthis('Unable to create image object for -'.$id.'-'. |
$ENV{"form.BGIMG"}); |
$ENV{"cgi.$id.BGIMG"}); |
return OK; |
return OK; |
} |
} |
#binmode(STDOUT); |
#binmode(STDOUT); |
Line 74 sub handler {
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Line 105 sub handler {
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if (!($black=$image->colorResolve(0,0,0))) { |
if (!($black=$image->colorResolve(0,0,0))) { |
$black = $image->colorClosestHWB(0,0,0); |
$black = $image->colorClosestHWB(0,0,0); |
} |
} |
for(my $i=0;$i<$ENV{"form.ICOUNT"};$i++) { |
for(my $i=0;$i<$ENV{"cgi.$id.ICOUNT"};$i++) { |
my $subimage=&get_image($ENV{"form.IMG$i"},1); |
my $subimage=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.IMG$i"}),1); |
if (!defined($subimage)) { |
if (!defined($subimage)) { |
&Apache::lonnet::logthis('Unable to create image object for '. |
&Apache::lonnet::logthis('Unable to create image object for '. |
$ENV{"form.BGIMG"}); |
$ENV{"cgi.$id.BGIMG"}); |
next; |
next; |
} |
} |
$image->copy($subimage,$ENV{"form.IX$i"},$ENV{"form.IY$i"}, |
$image->copy($subimage,$ENV{"cgi.$id.IX$i"},$ENV{"cgi.$id.IY$i"}, |
0,0,$subimage->getBounds()); |
0,0,$subimage->getBounds()); |
} |
} |
my $height=GD::Font->Giant->height; |
my $height=GD::Font->Giant->height; |
for(my $i=0;$i<$ENV{"form.COUNT"};$i++) { |
for(my $i=0;$i<$ENV{"cgi.$id.COUNT"};$i++) { |
$image->string(gdGiantFont,$ENV{"form.X$i"},$ENV{"form.Y$i"}-$height, |
$image->string(GD::gdGiantFont,$ENV{"cgi.$id.X$i"}, |
$ENV{"form.LB$i"},$black); |
$ENV{"cgi.$id.Y$i"}-$height, |
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&Apache::lonnet::unescape($ENV{"cgi.$id.LB$i"}),$black); |
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} |
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for(my $i=0;$i<$ENV{"cgi.$id.LINECOUNT"};$i++) { |
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my ($x1,$y1,$x2,$y2,$color,$width)=split(':',$ENV{"cgi.$id.LINE$i"}); |
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my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color); |
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$red=hex($red);$green=hex($green);$blue=hex($blue); |
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my $imcolor; |
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if (!($imcolor = $image->colorResolve($red,$green,$blue))) { |
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$imcolor = $image->colorClosestHWB($red,$green,$blue); |
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} |
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$image->setThickness($width); |
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$image->line($x1,$y1,$x2,$y2,$imcolor); |
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} |
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for(my $i=0;$i<$ENV{"cgi.$id.BOXCOUNT"};$i++) { |
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my ($x1,$y1,$x2,$y2,$color,$width)=split(':',$ENV{"cgi.$id.BOX$i"}); |
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if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } |
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if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } |
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my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color); |
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$red=hex($red);$green=hex($green);$blue=hex($blue); |
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my $imcolor; |
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if (!($imcolor = $image->colorResolve($red,$green,$blue))) { |
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$imcolor = $image->colorClosestHWB($red,$green,$blue); |
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} |
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$image->setThickness($width); |
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$image->rectangle($x1,$y1,$x2,$y2,$imcolor); |
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} |
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for(my $i=0;$i<$ENV{"cgi.$id.POLYCOUNT"};$i++) { |
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my ($color,$width,$open)=split(':',$ENV{"cgi.$id.POLYOPT$i"}); |
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my (undef,$red,undef,$green,undef,$blue)=split(/(..)/,$color); |
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$red=hex($red);$green=hex($green);$blue=hex($blue); |
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my $imcolor; |
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if (!($imcolor = $image->colorResolve($red,$green,$blue))) { |
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$imcolor = $image->colorClosestHWB($red,$green,$blue); |
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} |
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my $polygon; |
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if ($open) { |
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$polygon = new GD::Polyline; |
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} else { |
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$polygon = new GD::Polygon; |
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} |
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foreach my $coord (split('-',$ENV{"cgi.$id.POLY$i"})) { |
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my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); |
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$polygon->addPt($x,$y); |
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} |
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$image->setThickness($width); |
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if ($open) { |
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$image->polydraw($polygon,$imcolor); |
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} else { |
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$image->polygon($polygon,$imcolor); |
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} |
} |
} |
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$image->setThickness(1); |
$r->print($image->png); |
$r->print($image->png); |
return OK; |
return OK; |
} |
} |