version 1.14, 2004/01/12 19:53:54
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version 1.20, 2004/07/15 18:06:09
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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; |
use GD::Polyline(); |
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)$/i) { |
if ($imgsrc !~ m|^(/home/)|) { |
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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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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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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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$conv_image->Set('type'=>'TrueColor'); |
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$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); |
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$conv_image->Set('type'=>'TrueColor'); |
$conv_image->Set('magick'=>'png'); |
$conv_image->Set('magick'=>'png'); |
my @blobs=$conv_image->ImageToBlob(); |
my @blobs=$conv_image->ImageToBlob(); |
undef $conv_image; |
undef $conv_image; |
$image = GD::Image->new($blobs[0]); |
$image = GD::Image->new($blobs[0]); |
} else { |
} else { |
GD::Image->trueColor(1); |
$image = GD::Image->trueColor(1); |
$image = GD::Image->new($imgsrc); |
$image = GD::Image->new($imgsrc); |
} |
} |
if ($set_trans && defined($image)) { |
if ($set_trans && defined($image)) { |
Line 58 sub get_image {
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Line 83 sub get_image {
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return $image; |
return $image; |
} |
} |
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sub get_color_from_hexstring { |
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my ($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'); |
$r->content_type('image/png'); |
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$r->send_http_header; |
my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'}); |
my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'}); |
my $image=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.BGIMG"}),0); |
my $image; |
if (! defined($image)) { |
if (defined($ENV{"cgi.$id.BGIMG"})) { |
&Apache::lonnet::logthis('Unable to create image object for -'.$id.'-'. |
my $bgimg=&Apache::lonnet::unescape($ENV{"cgi.$id.BGIMG"}); |
$ENV{"cgi.$id.BGIMG"}); |
#&Apache::lonnet::logthis("BGIMG is ".$bgimg); |
return OK; |
$image=&get_image($bgimg,0); |
} |
if (! defined($image)) { |
#binmode(STDOUT); |
&Apache::lonnet::logthis('Unable to create image object for -'. |
my $black; |
$id.'-'.$bgimg); |
if (!($black=$image->colorResolve(0,0,0))) { |
return OK; |
$black = $image->colorClosestHWB(0,0,0); |
} |
} |
} elsif (defined($ENV{"cgi.$id.SIZE"})) { |
for(my $i=0;$i<$ENV{"cgi.$id.ICOUNT"};$i++) { |
my ($width,$height)=split(':',$ENV{"cgi.$id.SIZE"}); |
my $subimage=&get_image(&Apache::lonnet::unescape($ENV{"cgi.$id.IMG$i"}),1); |
$image = new GD::Image($width,$height,1); |
if (!defined($subimage)) { |
my ($bgcolor)=split(':',$ENV{"cgi.$id.BGCOLOR"}); |
&Apache::lonnet::logthis('Unable to create image object for '. |
if ($bgcolor ne 'transparent') { |
$ENV{"cgi.$id.BGIMG"}); |
$bgcolor=&get_color_from_hexstring($image,$bgcolor); |
next; |
# $image->rectangle(0,0,$width,$height,$bgcolor); |
} |
$image->fill(0,0,$bgcolor); |
$image->copy($subimage,$ENV{"cgi.$id.IX$i"},$ENV{"cgi.$id.IY$i"}, |
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0,0,$subimage->getBounds()); |
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} |
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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,$ENV{"cgi.$id.X$i"}, |
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$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 { |
} else { |
$polygon = new GD::Polygon; |
$bgcolor=&get_color_from_hexstring($image,'FFFFFF'); |
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$image->fill(0,0,$bgcolor); |
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$image->transparent($bgcolor); |
} |
} |
foreach my $coord (split('-',$ENV{"cgi.$id.POLY$i"})) { |
} else { |
my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); |
&Apache::lonnet::logthis('Unable to create image object, no info'); |
$polygon->addPt($x,$y); |
return OK; |
} |
} |
$image->setThickness($width); |
#binmode(STDOUT); |
if ($open) { |
my @objtypes=split(':',$ENV{"cgi.$id.OBJTYPE"}); |
$image->polydraw($polygon,$imcolor); |
foreach(my $i=0;$i<$ENV{"cgi.$id.OBJCOUNT"};$i++) { |
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my $type=shift(@objtypes); |
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if ($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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my $added=0; |
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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,$y); |
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$added++; |
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} |
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$image->setThickness($width); |
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if ($added) { |
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if ($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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} |
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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,$direction)= |
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split(':',$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 $type='normal'; |
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my ($height,$fontref); |
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if ($font eq 'tiny') { |
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$height=GD::Font->Tiny->height; |
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$fontref=GD::gdTinyFont; |
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} elsif ($font eq 'small') { |
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$height=GD::Font->Small->height; |
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$fontref=GD::gdSmallFont; |
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} elsif ($font eq 'medium') { |
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$height=GD::Font->MediumBold->height; |
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$fontref=GD::gdMediumBoldFont; |
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} elsif ($font eq 'large') { |
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$height=GD::Font->Large->height; |
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$fontref=GD::gdLargeFont; |
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} elsif ($font eq 'giant' || !defined($font)) { |
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$height=GD::Font->Giant->height; |
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$fontref=GD::gdGiantFont; |
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} else { |
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$type='ttf'; |
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} |
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if ($type eq 'normal' && $direction eq 'vertical') { |
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$image->stringUp($fontref,$x,$y-$height,$text,$imcolor); |
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} elsif ($type eq 'normal') { |
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$image->string($fontref,$x,$y-$height,$text,$imcolor); |
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} elsif ($type eq 'ttf') { |
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my ($fontname,$ptsize)=split(/\s+/,$font); |
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$image->stringFT($imcolor,$fontname,$ptsize,90,$x,$y,$text); |
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} |
} else { |
} else { |
$image->polygon($polygon,$imcolor); |
&Apache::lonnet::logthis("randomlylabel unable to handle object of type $type"); |
} |
} |
} |
} |
$image->setThickness(1); |
$image->setThickness(1); |