version 1.2, 2002/11/13 23:52:41
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version 1.16, 2004/02/23 22:52:30
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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(); |
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use GD(); |
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use GD::Polyline(); |
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use LWP::UserAgent(); |
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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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&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) { |
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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 $image; |
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} |
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sub get_color_from_hexstring { |
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my ($image,$color)=@_; |
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if (!$color) { $color='000000'; } |
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my (undef,$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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return $imcolor; |
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} |
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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.$id.BGIMG"}); |
&Apache::lonnet::delenv('imagerequest\.'.$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.'-'. |
#binmode(STDOUT); |
$ENV{"cgi.$id.BGIMG"}); |
for(my $i=0;$i<$ENV{"form.ICOUNT"};$i++) { |
return OK; |
my $subimage = Image::Magick->new; |
} elsif (defined($ENV{"cgi.$id.SIZE"})) { |
$subimage->Read('filename' => $ENV{"form.IMG$i"}); |
my ($width,$height)=split(':',$ENV{"cgi.$id.SIZE"}); |
$image->Composite('x' => $ENV{"form.X$i"},'y' => $ENV{"form.Y$i"}, |
$image = new GD::Image($width,$height,1); |
'compose'=> 'Over', 'image' => $subimage, |
my ($bgcolor)=split(':',$ENV{"cgi.$id.BGCOLOR"}); |
'gravity' => 'NorthWest'); |
if ($bgcolor ne 'transparent') { |
undef($subimage); |
$bgcolor=&get_color_from_hexstring($image,$bgcolor); |
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# $image->rectangle(0,0,$width,$height,$bgcolor); |
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$image->fill(0,0,$bgcolor); |
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} else { |
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$bgcolor=&get_color_from_hexstring($image,'FFFFFF'); |
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$image->fill(0,0,$bgcolor); |
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$image->transparent($bgcolor); |
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} |
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} else { |
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&Apache::lonnet::logthis('Unable to create image object, no info'); |
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return OK; |
} |
} |
for(my $i=0;$i<$ENV{"form.COUNT"};$i++) { |
#binmode(STDOUT); |
$image->Annotate('text' => $ENV{"form.LB$i"},'x' => $ENV{"form.X$i"}, |
my @objtypes=split(':',$ENV{"cgi.$id.OBJTYPE"}); |
'y' => $ENV{"form.Y$i"}, 'font' => 'Times-Bold', |
foreach(my $i=0;$i<$ENV{"cgi.$id.OBJCOUNT"};$i++) { |
'pointsize' => 18, 'antialias' => 'true', |
my $type=shift(@objtypes); |
'gravity' => 'NorthWest'); |
&Apache::lonnet::logthis("type is $type"); |
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if ($type eq 'LINE') { |
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my ($x1,$y1,$x2,$y2,$color,$thickness)= |
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split(':',$ENV{"cgi.$id.OBJ$i"}); |
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my $imcolor=&get_color_from_hexstring($image,$color); |
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if (!defined($thickness)) { $thickness=1; } |
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$image->setThickness($thickness); |
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$image->setAntiAliased($imcolor); |
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$image->line($x1,$y1,$x2,$y2,gdAntiAliased); |
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} elsif ($type eq 'RECTANGLE') { |
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my ($x1,$y1,$x2,$y2,$color,$thickness,$filled)= |
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split(':',$ENV{"cgi.$id.OBJ$i"}); |
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if ($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 $imcolor=&get_color_from_hexstring($image,$color); |
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if (!defined($thickness)) { $thickness=1; } |
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$image->setThickness($thickness); |
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# $image->setAntiAliased($imcolor); |
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if ($filled) { |
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$image->filledRectangle($x1,$y1,$x2,$y2,$imcolor); |
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} else { |
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$image->rectangle($x1,$y1,$x2,$y2,$imcolor); |
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} |
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} elsif ($type eq 'POLYGON') { |
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my ($color,$width,$open)=split(':',$ENV{"cgi.$id.OBJ$i"}); |
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my $imcolor=&get_color_from_hexstring($image,$color); |
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my $polygon = (($open) ? (new GD::Polyline) : (new GD::Polygon)); |
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foreach my $coord (split('-',$ENV{"cgi.$id.OBJEXTRA$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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} elsif ($type eq 'ARC') { |
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my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)= |
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split(':',$ENV{"cgi.$id.OBJ$i"}); |
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if (!$color) { $color='000000'; } |
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my $imcolor=&get_color_from_hexstring($image,$color); |
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if (!defined($thickness)) { $thickness=1; } |
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$image->setThickness($thickness); |
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# $image->setAntiAliased($imcolor); |
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if ($filled) { |
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$image->filledArc($x,$y,$width,$height,$start,$end, |
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$imcolor); |
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} else { |
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$image->arc($x,$y,$width,$height,$start,$end,$imcolor); |
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} |
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} elsif ($type eq 'FILL') { |
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my ($x,$y,$color)=split(':',$ENV{"cgi.$id.OBJ$i"}); |
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if (!$color) { $color='000000'; } |
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my $imcolor=&get_color_from_hexstring($image,$color); |
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$image->fill($x,$y,$imcolor); |
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} elsif ($type eq 'IMAGE') { |
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my ($x,$y,$file,$transparent)=split(':',$ENV{"cgi.$id.OBJ$i"}); |
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$file=&Apache::lonnet::unescape($file); |
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if (!defined($transparent)) { $transparent=1; } |
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my $subimage=&get_image($file,$transparent); |
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if (!defined($subimage)) { |
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&Apache::lonnet::logthis('Unable to create image object for '. |
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$file); |
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next; |
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} |
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$image->copy($subimage,$x,$y,0,0,$subimage->getBounds()); |
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} elsif ($type eq 'LABEL') { |
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my ($x,$y,$text,$font,$color)=split(':',$ENV{"cgi.$id.OBJ$i"}); |
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$text=&Apache::lonnet::unescape($text); |
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my $imcolor=&get_color_from_hexstring($image,$color); |
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my $height=GD::Font->Giant->height; |
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for(my $i=0;$i<$ENV{"cgi.$id.COUNT"};$i++) { |
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$image->string(GD::gdGiantFont,$x,$y-$height,$text,$black); |
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} |
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} |
} |
} |
$image->Set('magick'=>'png'); |
$image->setThickness(1); |
my @blobs=$image->ImageToBlob(); |
$r->print($image->png); |
$r->print($blobs[0]); |
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return OK; |
return OK; |
} |
} |
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