--- loncom/homework/imageresponse.pm	2004/02/18 00:23:01	1.48
+++ loncom/homework/imageresponse.pm	2005/02/10 23:00:10	1.62
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # image click response style
 #
-# $Id: imageresponse.pm,v 1.48 2004/02/18 00:23:01 albertel Exp $
+# $Id: imageresponse.pm,v 1.62 2005/02/10 23:00:10 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -31,10 +31,11 @@
 
 package Apache::imageresponse;
 use strict;
-use Image::Magick;
-use Apache::randomlylabel;
-use Apache::londefdef;
+use Image::Magick();
+use Apache::randomlylabel();
+use Apache::londefdef();
 use Apache::Constants qw(:common :http);
+use Apache::lonlocal;
 
 BEGIN {
     &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
@@ -49,6 +50,7 @@ sub start_imageresponse {
 			       'polygon','conceptgroup'));
     push (@Apache::lonxml::namespace,'imageresponse');
     my $id = &Apache::response::start_response($parstack,$safeeval);
+    undef(%Apache::response::foilnames);
     if ($target eq 'meta') {
 	$result=&Apache::response::meta_package_write('imageresponse');
     } elsif ($target eq 'analyze') {
@@ -65,6 +67,7 @@ sub end_imageresponse {
     &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
     my $result;
     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
+    undef(%Apache::response::foilnames);
     return $result;
 }
 
@@ -72,7 +75,7 @@ sub end_imageresponse {
 sub start_foilgroup {
     %Apache::response::foilgroup=();
     $Apache::imageresponse::conceptgroup=0;
-    &Apache::response::setrandomnumber();
+    &Apache::response::pushrandomnumber();
     return '';
 }
 
@@ -82,7 +85,7 @@ sub getfoilcounts {
     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
     # +1 since instructors will count from 1
     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
-    if (&Apache::response::showallfoils()) { $max=$count; }
+    #if (&Apache::response::showallfoils()) { $max=$count; }
     return ($count,$max);
 }
 
@@ -94,11 +97,11 @@ sub whichfoils {
     while ((($#whichopt+1) < $max) && ($#names > -1)) {
 	&Apache::lonxml::debug("Have $#whichopt max is $max");
 	my $aopt;
-	if (&Apache::response::showallfoils()) {
-	    $aopt=0;
-	} else {
+#	if (&Apache::response::showallfoils()) {
+#	    $aopt=0;
+#	} else {
 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
-	}
+#	}
 	&Apache::lonxml::debug("From $#names elms, picking $aopt");
 	$aopt=splice(@names,$aopt,1);
 	&Apache::lonxml::debug("Picked $aopt");
@@ -112,13 +115,12 @@ sub prep_image {
     my $part=$Apache::inputtags::part;
     my $respid=$Apache::inputtags::response['-1'];
     my $id=&Apache::loncommon::get_cgi_id();
-    my %x;
+    my (%x,$i);
     $x{"cgi.$id.BGIMG"}=&Apache::lonnet::escape($image);
     my ($x,$y)=split(/:/,$Apache::lonhomework::history{"resource.$part.$respid.submission"});
     #draws 2 xs on the image at the clicked location
     #one in white and then one in red on top of the one in white
-    if (defined($x) && $x=~/\S/ && defined($y) && $y =~/\S/) {
-	$x{"cgi.$id.LINECOUNT"}=4;
+    if (defined($x) && $x=~/\S/ && defined($y) && $y =~/\S/ && !&Apache::response::show_answer()) {
 	my $length = 6;
 	my $width = 1;
 	my $extrawidth = 2;
@@ -127,18 +129,22 @@ sub prep_image {
 	my $ymin=($y-$length);
 	my $ymax=($y+$length);
 
-	$x{"cgi.$id.LINE0"}=
-	    join(':',(($xmin),($ymin),($xmax),($ymax),
-		      "FFFFFF",($width+$extrawidth)));
-	$x{"cgi.$id.LINE1"}=
-	    join(':',(($xmin),($ymax),($xmax),($ymin),
-		      "FFFFFF",($width+$extrawidth)));
-	$x{"cgi.$id.LINE2"}=
-	    join(':',(($xmin),($ymin),($xmax),($ymax),
-		      "FF0000",($width)));
-	$x{"cgi.$id.LINE3"}=
-	    join(':',(($xmin),($ymax),($xmax),($ymin),
-		      "FF0000",($width)));
+	$x{"cgi.$id.OBJTYPE"}.='LINE:';
+	$i=$x{"cgi.$id.OBJCOUNT"}++;
+	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
+				      "FFFFFF",($width+$extrawidth)));
+	$x{"cgi.$id.OBJTYPE"}.='LINE:';
+	$i=$x{"cgi.$id.OBJCOUNT"}++;
+	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
+				      "FFFFFF",($width+$extrawidth)));
+	$x{"cgi.$id.OBJTYPE"}.='LINE:';
+	$i=$x{"cgi.$id.OBJCOUNT"}++;
+	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymin),($xmax),($ymax),
+				      "FF0000",($width)));
+	$x{"cgi.$id.OBJTYPE"}.='LINE:';
+	$i=$x{"cgi.$id.OBJCOUNT"}++;
+	$x{"cgi.$id.OBJ$i"}=join(':',(($xmin),($ymax),($xmax),($ymin),
+				      "FF0000",($width)));
     }
     if ($mode eq 'answer') {
 	my $width = 1;
@@ -146,20 +152,24 @@ sub prep_image {
 	my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
 	foreach my $area (@areas) {
 	    if ($area=~/^rectangle:/) {
+		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
+		$i=$x{"cgi.$id.OBJCOUNT"}++;
 		my ($x1,$y1,$x2,$y2)=
 		    ($area=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/);
-		my $i=$x{"cgi.$id.BOXCOUNT"}++;
-		$x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
+		$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"FFFFFF",
 					      ($width+$extrawidth)));
-		$i=$x{"cgi.$id.BOXCOUNT"}++;
-		$x{"cgi.$id.BOX$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
+		$x{"cgi.$id.OBJTYPE"}.='RECTANGLE:';
+		$i=$x{"cgi.$id.OBJCOUNT"}++;
+		$x{"cgi.$id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,"00FF00",$width));
 	    } elsif ($area=~/^polygon:(.*)/) {
-		my $i=$x{"cgi.$id.POLYCOUNT"}++;
-		$x{"cgi.$id.POLYOPT$i"}=join(':',("FFFFFF",($width+$extrawidth)));
-		$x{"cgi.$id.POLY$i"}=$1;
-		$i=$x{"cgi.$id.POLYCOUNT"}++;
-		$x{"cgi.$id.POLYOPT$i"}=join(':',("00FF00",$width));
-		$x{"cgi.$id.POLY$i"}=$1;
+		$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
+		$i=$x{"cgi.$id.OBJCOUNT"}++;
+		$x{"cgi.$id.OBJ$i"}=join(':',("FFFFFF",($width+$extrawidth)));
+		$x{"cgi.$id.OBJEXTRA$i"}=$1;
+		$x{"cgi.$id.OBJTYPE"}.='POLYGON:';
+		$i=$x{"cgi.$id.OBJCOUNT"}++;
+		$x{"cgi.$id.OBJ$i"}=join(':',("00FF00",$width));
+		$x{"cgi.$id.OBJEXTRA$i"}=$1;
 	    }
 	}
     }
@@ -208,7 +218,7 @@ sub displayfoils {
 sub clean_up_image {
     my ($image)=@_;
     if ($image =~ /\s*<img\s*/) {
-	($image) = ($image =~ /src\s*=\s*\"([^\"]+)\"/i);
+	($image) = ($image =~ /src\s*=\s*[\"\']([^\"\']+)[\"\']/i);
 	if ($image !~ /^http:/) {
 	    $image=&Apache::lonnet::hreflocation('',$image);
 	}
@@ -260,8 +270,14 @@ sub gradefoils {
 	    $temp++;
 	}
     }
-    $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
-    $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
+    my $responsestr="$x:$y";
+    my $part=$Apache::inputtags::part;
+    my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
+    if ($result 
+	&& $Apache::lonhomework::type eq 'survey') { $result='SUBMITTED'; }
+    &Apache::response::handle_previous(\%previous,$result);
+    $Apache::lonhomework::results{"resource.$part.$id.submission"}=$responsestr;
+    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$result;
     return '';
 }
 
@@ -286,6 +302,7 @@ sub end_foilgroup {
     } elsif ($target eq 'edit') {
 	$result=&Apache::edit::end_table();
     }
+    &Apache::response::poprandomnumber();
     return $result;
 }
 
@@ -327,9 +344,17 @@ sub start_foil {
     if ($target eq 'web' || $target eq 'grade' || $target eq 'tex' ||
 	$target eq 'analyze') {
 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
-	if ($name eq '') { $name=$Apache::lonxml::curdepth; }
+	if (!$name) {
+	    &Apache::lonxml::error("Foils without names exist. This can cause problems to malfunction.");
+	    $name=$Apache::lonxml::curdepth;
+	}
+	if (defined($Apache::response::foilnames{$name})) {
+	    &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
+	}
+	$Apache::response::foilnames{$name}++;
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils()) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    push(@{ $Apache::response::conceptgroup{'names'} }, $name);
 	} else {
 	    push(@{ $Apache::response::foilgroup{'names'} }, $name);
@@ -370,7 +395,8 @@ sub end_text {
     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
 	my $name = $Apache::imageresponse::curname;
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils() ) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
 	} else {
 	    $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
@@ -407,18 +433,20 @@ sub end_image {
     my $result;
     my $name = $Apache::imageresponse::curname;
     if ($target eq 'web') {
-	my $image = &Apache::lonxml::endredirection;
+	my $image = &Apache::lonxml::endredirection();
 	&Apache::lonxml::debug("original image is $image");
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils()) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    $Apache::response::conceptgroup{"$name.image"} = $image;
 	} else {
 	    $Apache::response::foilgroup{"$name.image"} = $image;
 	}
     } elsif ($target eq 'analyze') {
-	my $image = &Apache::lonxml::endredirection;
+	my $image = &Apache::lonxml::endredirection();
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils()) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    $Apache::response::conceptgroup{"$name.image"} = $image;
 	} else {
 	    $Apache::response::foilgroup{"$name.image"} = $image;
@@ -426,74 +454,11 @@ sub end_image {
     } elsif ($target eq 'edit') {
 	$result=&Apache::edit::end_table();
     } elsif ($target eq 'tex') {
-	my $src = &Apache::lonxml::endredirection;
-	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
-	my $width_param = '';
-	my $height_param = '';
-	my $scaling = .3;
-	my $image = Image::Magick->new;
-	my $current_figure = $image->Read($src);
-	$width_param = $image->Get('width') * $scaling;;
-	$height_param = $image->Get('height') * $scaling;;
-	undef $image;
-	my $epssrc = $src;
-	$epssrc =~ s/(\.gif|\.jpg)$/\.eps/i;
-	if (not -e $epssrc) {
-	    my $localfile = $epssrc;
-	    $localfile =~ s/.*(\/res)/$1/;	
-	    my $file;
-	    my $path;	
-	    if ($localfile =~ m!(.*)/([^/]*)$!) {
-		$file = $2;
-		$path = $1.'/'; 
-	    }	
-	    my $signal_eps = 0;
-	    my @content_directory = &Apache::lonnet::dirlist($path);
-	    for (my $iy=0;$iy<=$#content_directory;$iy++) {
-		my @tempo_array = split(/&/,$content_directory[$iy]);
-		$content_directory[$iy] = $tempo_array[0];
-		if ($file eq $tempo_array[0]) {
-		    $signal_eps = 1;
-		    last;
-		}
-	    }
-	    if ($signal_eps) {
-		my $eps_file = &Apache::lonnet::getfile($localfile);
-	    } else {
-		$localfile = $src;
-		$localfile =~ s/.*(\/res)/$1/;	
-		my $as = &Apache::lonnet::getfile($src);		      
-	    }
-	}
-	my $file;
-	my $path;	
-	if ($src =~ m!(.*)/([^/]*)$!) {
-	    $file = $2;
-	    $path = $1.'/'; 
-	}
-	my $newsrc = $src;
-	$newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
-	$file=~s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
-	#do we have any specified size of the picture?
-	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); 
-	my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); 
-	my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
-	if ($TeXwidth ne '') { 
-	    $width_param = $TeXwidth; 
-	} elsif ($TeXheight ne '') { 
-	    $width_param = $TeXheight/$height_param*$width_param;
-	} elsif ($width ne '') {
-	    $width_param = $width*$scaling;      
-	}
-	#where can we find the picture?
-	if (-e $newsrc) {
-	    if ($path) {
-		$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
-	    }
-	} else {
-	    #care about eps dynamical generation
-	    $Apache::response::foilgroup{"$name.image"}='\vskip 0 mm '.&Apache::londefdef::eps_generation($src,$file,$width_param);
-	}
+	my $src = &Apache::lonxml::endredirection();
+	my ($path,$file) = &Apache::londefdef::get_eps_image($src);
+	my ($height_param,$width_param)=
+	    &Apache::londefdef::image_size($src,0.3,$parstack,$safeeval);
+	$Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
     } 
     return $result;
 }
@@ -537,9 +502,11 @@ sub end_rectangle {
 	$target eq 'analyze') {
 	my $name = $Apache::imageresponse::curname;
 	my $area = &Apache::lonxml::endredirection;
+	$area=~s/\s//g;
 	&Apache::lonxml::debug("out is $area for $name");
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils()) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
 	} else {
 	    push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
@@ -619,7 +586,8 @@ sub end_polygon {
 	$area=~s/\s*//g;
 	&Apache::lonxml::debug("out is $area for $name");
 	if ( $Apache::imageresponse::conceptgroup
-	     && !&Apache::response::showallfoils()) {
+	     #&& !&Apache::response::showallfoils()
+	     ) {
 	    push @{ $Apache::response::conceptgroup{"$name.area"} },"polygon:$area";
 	} else {
 	    push @{ $Apache::response::foilgroup{"$name.area"} },"polygon:$area";