version 1.25, 2005/03/23 15:27:48
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version 1.31, 2008/12/19 14:28:14
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#!/usr/bin/perl |
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# randomlabel.png: composite together text and images into 1 image |
# randomlabel.png: composite together text and images into 1 image |
# |
# |
Line 205 use Apache::loncommon();
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Line 204 use Apache::loncommon();
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use GD; |
use GD; |
use GD::Polyline(); |
use GD::Polyline(); |
use LWP::UserAgent(); |
use LWP::UserAgent(); |
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use Apache::lonnet; |
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use lib '/home/httpd/lib/perl/'; |
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use LONCAPA; |
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sub get_image { |
sub get_image { |
my ($imgsrc,$set_trans)=@_; |
my ($imgsrc,$set_trans)=@_; |
my $image; |
my $image; |
if ($imgsrc !~ m|^(/home/)|) { |
if ($imgsrc !~ m|^(/home/)|) { |
if ($imgsrc !~ /^http:/) { |
if ($imgsrc !~ /^https?\:/) { |
$imgsrc="http://".$ENV{'HTTP_HOST'}.$imgsrc; |
$imgsrc=&Apache::lonnet::absolute_url($ENV{'HTTP_HOST'}).$imgsrc; |
} |
} |
my $ua=new LWP::UserAgent; |
my $ua=new LWP::UserAgent; |
my $request=new HTTP::Request('GET',"$imgsrc"); |
my $request=new HTTP::Request('GET',"$imgsrc"); |
Line 264 sub get_color_from_hexstring {
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Line 267 sub get_color_from_hexstring {
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return $imcolor; |
return $imcolor; |
} |
} |
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sub add_click { |
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my ($image) = @_; |
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my $length=6; |
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my $bgcolor=&get_color_from_hexstring($image,'FFFFFF'); |
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my $fgcolor=&get_color_from_hexstring($image,'009999'); |
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my ($x,$y) = split(':',$env{'form.clickdata'}); |
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$image->setThickness(3); |
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$image->line($x-$length,$y, $x+$length,$y, $bgcolor); |
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$image->line($x, $y-$length,$x, $y+$length,$bgcolor); |
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$image->setThickness(1); |
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$image->line($x-$length,$y, $x+$length,$y, $fgcolor); |
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$image->line($x, $y-$length,$x, $y+$length,$fgcolor); |
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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'); |
$r->send_http_header; |
$r->send_http_header; |
my (undef,$id) = split(/=/,$ENV{'QUERY_STRING'}); |
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my $image; |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); |
my $prefix="cgi.$id."; |
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my $prefix; |
if ($ENV{'QUERY_STRING'}=~/OBJCOUNT\=/) { |
if ($ENV{'QUERY_STRING'}=~/OBJCOUNT\=/) { |
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); |
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$prefix='form.'; |
$prefix='form.'; |
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} else { |
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$prefix="cgi.$env{'form.token'}."; |
} |
} |
if (defined($ENV{$prefix."BGIMG"})) { |
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my $bgimg=&Apache::lonnet::unescape($ENV{$prefix."BGIMG"}); |
my $image; |
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if (defined($env{$prefix."BGIMG"})) { |
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my $bgimg=&unescape($env{$prefix."BGIMG"}); |
#&Apache::lonnet::logthis("BGIMG is ".$bgimg); |
#&Apache::lonnet::logthis("BGIMG is ".$bgimg); |
$image=&get_image($bgimg,0); |
$image=&get_image($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 -'. |
$id.'-'.$bgimg); |
$env{'form.token'}.'-'.$bgimg); |
return OK; |
return OK; |
} |
} |
} elsif (defined($ENV{$prefix."SIZE"})) { |
} elsif (defined($env{$prefix."SIZE"})) { |
my ($width,$height)=split(':',$ENV{$prefix."SIZE"}); |
my ($width,$height)=split(':',$env{$prefix."SIZE"}); |
$image = new GD::Image($width,$height,1); |
$image = new GD::Image($width,$height,1); |
my ($bgcolor)=split(':',$ENV{$prefix."BGCOLOR"}); |
my ($bgcolor)=split(':',$env{$prefix."BGCOLOR"}); |
if ($bgcolor ne 'transparent') { |
if ($bgcolor ne 'transparent') { |
$bgcolor=&get_color_from_hexstring($image,$bgcolor); |
$bgcolor=&get_color_from_hexstring($image,$bgcolor); |
# $image->rectangle(0,0,$width,$height,$bgcolor); |
# $image->rectangle(0,0,$width,$height,$bgcolor); |
Line 298 sub handler {
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Line 322 sub handler {
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$image->transparent($bgcolor); |
$image->transparent($bgcolor); |
} |
} |
} else { |
} else { |
&Apache::lonnet::logthis('Unable to create image object, no info'); |
&Apache::lonnet::logthis('Unable to create image object, no info '.$prefix); |
return OK; |
return OK; |
} |
} |
#binmode(STDOUT); |
#binmode(STDOUT); |
my @objtypes=split(':',$ENV{$prefix."OBJTYPE"}); |
my @objtypes=split(':',$env{$prefix."OBJTYPE"}); |
foreach(my $i=0;$i<$ENV{$prefix."OBJCOUNT"};$i++) { |
foreach(my $i=0;$i<$env{$prefix."OBJCOUNT"};$i++) { |
my $type=shift(@objtypes); |
my $type=shift(@objtypes); |
if ($type eq 'LINE') { |
if ($type eq 'LINE') { |
my ($x1,$y1,$x2,$y2,$color,$thickness)= |
my ($x1,$y1,$x2,$y2,$color,$thickness)= |
split(':',$ENV{$prefix."OBJ$i"}); |
split(':',$env{$prefix."OBJ$i"}); |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
if (!defined($thickness)) { $thickness=1; } |
if (!defined($thickness)) { $thickness=1; } |
$image->setThickness($thickness); |
$image->setThickness($thickness); |
Line 315 sub handler {
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Line 339 sub handler {
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$image->line($x1,$y1,$x2,$y2,$imcolor); |
$image->line($x1,$y1,$x2,$y2,$imcolor); |
} elsif ($type eq 'RECTANGLE') { |
} elsif ($type eq 'RECTANGLE') { |
my ($x1,$y1,$x2,$y2,$color,$thickness,$filled)= |
my ($x1,$y1,$x2,$y2,$color,$thickness,$filled)= |
split(':',$ENV{$prefix."OBJ$i"}); |
split(':',$env{$prefix."OBJ$i"}); |
if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } |
if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; } |
if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } |
if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; } |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
Line 328 sub handler {
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Line 352 sub handler {
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$image->rectangle($x1,$y1,$x2,$y2,$imcolor); |
$image->rectangle($x1,$y1,$x2,$y2,$imcolor); |
} |
} |
} elsif ($type eq 'POLYGON') { |
} elsif ($type eq 'POLYGON') { |
my ($color,$width,$open,$filled)=split(':',$ENV{$prefix."OBJ$i"}); |
my ($color,$width,$open,$filled)=split(':',$env{$prefix."OBJ$i"}); |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $polygon = (($open && lc ($open ne 'no')) ? |
my $polygon = (($open && lc ($open ne 'no')) ? |
(new GD::Polyline) : (new GD::Polygon)); |
(new GD::Polyline) : (new GD::Polygon)); |
my $added=0; |
my $added=0; |
foreach my $coord (split('-',$ENV{$prefix."OBJEXTRA$i"})) { |
foreach my $coord (split('-',$env{$prefix."OBJEXTRA$i"})) { |
my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); |
my ($x,$y)=($coord=~m/\(([0-9]+),([0-9]+)\)/); |
$polygon->addPt($x,$y); |
$polygon->addPt($x,$y); |
$added++; |
$added++; |
Line 351 sub handler {
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Line 375 sub handler {
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} |
} |
} elsif ($type eq 'ARC') { |
} elsif ($type eq 'ARC') { |
my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)= |
my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)= |
split(':',$ENV{$prefix."OBJ$i"}); |
split(':',$env{$prefix."OBJ$i"}); |
if (!$color) { $color='000000'; } |
if (!$color) { $color='000000'; } |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
if (!defined($thickness)) { $thickness=1; } |
if (!defined($thickness)) { $thickness=1; } |
Line 364 sub handler {
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Line 388 sub handler {
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$image->arc($x,$y,$width,$height,$start,$end,$imcolor); |
$image->arc($x,$y,$width,$height,$start,$end,$imcolor); |
} |
} |
} elsif ($type eq 'FILL') { |
} elsif ($type eq 'FILL') { |
my ($x,$y,$color)=split(':',$ENV{$prefix."OBJ$i"}); |
my ($x,$y,$color)=split(':',$env{$prefix."OBJ$i"}); |
if (!$color) { $color='000000'; } |
if (!$color) { $color='000000'; } |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
$image->fill($x,$y,$imcolor); |
$image->fill($x,$y,$imcolor); |
} elsif ($type eq 'IMAGE') { |
} elsif ($type eq 'IMAGE') { |
my ($x,$y,$file,$transparent,$srcX,$srcY,$destW,$destH,$srcW, |
my ($x,$y,$file,$transparent,$srcX,$srcY,$destW,$destH,$srcW, |
$srcH)=split(':',$ENV{$prefix."OBJ$i"}); |
$srcH)=split(':',$env{$prefix."OBJ$i"}); |
$file=&Apache::lonnet::unescape($file); |
$file=&unescape($file); |
if (!defined($transparent)) { $transparent=1; } |
if (!defined($transparent)) { $transparent=1; } |
my $subimage=&get_image($file,$transparent); |
my $subimage=&get_image($file,$transparent); |
if (!defined($subimage)) { |
if (!defined($subimage)) { |
Line 387 sub handler {
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Line 411 sub handler {
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$srcW,$srcH); |
$srcW,$srcH); |
} elsif ($type eq 'LABEL') { |
} elsif ($type eq 'LABEL') { |
my ($x,$y,$text,$font,$color,$direction)= |
my ($x,$y,$text,$font,$color,$direction)= |
split(':',$ENV{$prefix."OBJ$i"}); |
split(':',$env{$prefix."OBJ$i"}); |
$text=&Apache::lonnet::unescape($text); |
$text=&unescape($text); |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $imcolor=&get_color_from_hexstring($image,$color); |
my $type='normal'; |
my $type='normal'; |
my ($height,$fontref); |
my ($height,$fontref); |
Line 422 sub handler {
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Line 446 sub handler {
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&Apache::lonnet::logthis("randomlylabel unable to handle object of type $type"); |
&Apache::lonnet::logthis("randomlylabel unable to handle object of type $type"); |
} |
} |
} |
} |
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if (exists($env{'form.clickdata'})) { &add_click($image); } |
$image->setThickness(1); |
$image->setThickness(1); |
$r->print($image->png); |
$r->print($image->png); |
return OK; |
return OK; |