--- loncom/xml/londefdef.pm	2006/08/02 19:26:54	1.332
+++ loncom/xml/londefdef.pm	2006/11/06 11:39:02	1.341
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.332 2006/08/02 19:26:54 www Exp $
+# $Id: londefdef.pm,v 1.341 2006/11/06 11:39:02 foxr Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -561,8 +561,12 @@ sub end_body {
 }
 
 # \begin{center} causes a new paragprah spacing that looks odd inside 
-# of a table cell
-sub center_correction { return '\vspace*{-6 mm}'; }
+# of a table cell.  Same at the end of a \center but with a slightly
+# larger space .. hence center_correction and center_end_correction.
+#
+sub center_correction { return '\vspace*{-6 mm}'; } 
+sub center_end_correction { return '\vspace*{-7 mm}'; }
+
 #-- <center> tag (end tag required)
 sub start_center {
     my ($target,$token,$tagstack) = @_;
@@ -585,6 +589,9 @@ sub end_center {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\end{center}';  
+	if (&is_inside_of($tagstack, "table")) {
+	    $currentstring .= &center_end_correction();
+	}
     }
     return $currentstring;
 }
@@ -1154,7 +1161,7 @@ sub start_p {
 	$currentstring .= &end_p();	# close off prior para if in progress.
 	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
 	if ($align eq 'center') {
-	    $currentstring .='\begin{center}\par';
+	    $currentstring .='\begin{center}\par ';
 	    $closing_string = '\end{center}';
 	    if (&is_inside_of($tagstack, "table")) {
 		$currentstring = &center_correction().$currentstring;
@@ -1210,16 +1217,19 @@ sub start_br {
 	#
 	for (my $i=$#tempo;$i>=0;$i--) {
 	    if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
-                ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
-                ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th'))  {
+                ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul'))  {
 		$signal=1;
-		last;
+	    }
+	    if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
+		$signal = 1;
 	    }
 	}
-	if ($signal) {
+	if ($signal eq 1) {
 	    $currentstring .= ' \vskip 0 mm ';
 	} elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
 	    $currentstring .= '\strut \\\\ \strut ';
+	} else {                   # Honor break in simple <sup></sup>
+	    $currentstring .= '}} \strut \\\\ \strut \ensuremath{^{'; 
 	}
     }
     return $currentstring;
@@ -1981,7 +1991,13 @@ sub start_table {
         $Apache::londefdef::table[-1]{'minlen'}=[];
         $Apache::londefdef::table[-1]{'content'}=[];
         $Apache::londefdef::table[-1]{'align'}=[];
-        $currentstring.='\keephidden{NEW TABLE ENTRY}';
+	if (&is_inside_of($tagstack, 'sup')) {
+	    $currentstring .= '}} \\\\ \ensuremath{^{ ';
+	}
+	if (&is_inside_of($tagstack, 'sub')) {
+	    $currentstring .= '}} \\\\ \ensuremath{_{ ';
+	}
+        $currentstring.=' \keephidden{NEW TABLE ENTRY}';
 
 
     }
@@ -2199,35 +2215,81 @@ sub end_table {
 		# 
 
 		if ($colspan > 1) {
+		    my $spanwidth = 0;
+		    for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
+			$spanwidth += $fwidth[$spancol];
+		    }
 		    $output .= '\multicolumn{'.
 			$colspan
-			.'}{|l|}{';
+			."}";
+		    if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+			$output .= '{|c|}{';
+		    } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+			$output .= '{|r|}{';
+		    }
+		    else {
+			$output .= "{|p{$spanwidth mm}|}{";
+		    }
+			
 		}
 
+		# Rowspan... if colspan is 1, and there's an alignment we'll need
+		# to kick in a multicolumn in order to get the alignment spec.
+		# this must precede the multirow or LaTex gets quite upset.
+		# Naturally if colspan > 1 we've already done that above ^
+		#
+		my $multirow_aligned = 0;
 		if ($rowspan > 1) {
+		    if ($colspan == 1) {
+			if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+			    $output .= '\multicolumn{1}{|c|}{';
+			    $multirow_aligned = 1;
+			} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+			    $output .= '\multicolumn{1}{|r|}{';
+			    $multirow_aligned = 1;
+			}
+		    }
 		    $have_rowspan++;
-		    $output .= '\multirow{'.$rowspan.'}[0]{'.$fwidth[$jn].'mm}{';
+		    $output .= '\multirow{'.$rowspan.'}[0]{*}{';
+		    #
+		    # If we did not throw in a multicolumn to align, then add 
+		    # an extra {
+		    # so we close correctly without having to keep additional state
+		    # around
+		    #
+		    if (!$multirow_aligned) {
+			$output .= '{';
+		    }
 		}
 		if (($rowspan eq '^') || ($rowspan eq '_')) {
 		    $have_rowspan++;
 		}
 		#--------------------------------------------------------------
 
-		if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
-		    $output.=&center_correction().'\begin{center}';
-		} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
-		    $output.=' \hfill \llap{'
+
+		# For right and center alignment of single cells.
+		# we are going to use a multicolumn with a span of 1 to specify alignment.
+		#
+		if ($colspan == 1  && $rowspan == 1) {
+		    if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+			$output .= '\multicolumn{1}{|c|}{';
+		    } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+			$output .= '\multicolumn{1}{|r|}{';
+		    }
 		}
+
 		$output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
-		if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
-		    $output.='\end{center}';
-		} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
-		    $output.='} ';
+
+		if (($colspan == 1 && $rowspan == 1)   &&
+		    (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
+		     ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
+		    $output .= '}';
 		}
+
 		# Close off any open multirow:
 		
 		if ($rowspan > 1) {
-		    $output .= '}';
+		    $output .= '}}';
 		}
 		#  Close off the colspan...
 		#
@@ -2790,6 +2852,7 @@ sub start_img {
 	#if original gif/jpg/png file exist do following:
 	my $origsrc=$src;
 	my ($path,$file) = &get_eps_image($src);
+	# &Apache::lonnet::logthis("Image source: $src result: $path $file");
 	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
 	&Apache::lonxml::debug("path = $path file = $file src = $src");
 	if (-e $src) {
@@ -2803,6 +2866,13 @@ sub start_img {
 	    my $size;
 	    if ($width_param)  { $size.='width='.$width_param.' mm,'; }
 	    if ($height_param) { $size.='height='.$height_param.' mm]'; }
+	    # Default size if not able to extract that (e.g. eps image).
+	    
+	    # &Apache::lonnet::logthis("Size = $size");
+	    if ($size eq "0 mm") {
+		$size = "50 mm]";     # Default to 1 column width for 2 column.
+	    }
+	    
 	    $size='['.$size;
 	    $size=~s/,$/]/; 
 	    $currentstring .= '\graphicspath{{'.$destpath.'}}'
@@ -3358,6 +3428,9 @@ sub start_blockquote {
     if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } 
+    if ($target eq 'tex') {
+	$currentstring .= '\begin{quote}';
+    }
     return $currentstring;
 }
 
@@ -3367,6 +3440,9 @@ sub end_blockquote {
     if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
+    if ($target eq 'tex') {
+	$currentstring = '\end{quote}';
+    }
     return $currentstring;
 }
 
@@ -4172,6 +4248,7 @@ sub get_eps_image {
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
     &Apache::lonxml::debug("Filelocation gives: $src");
     if (! -e $src) {
+	# &Apache::lonnet::logthis("$src does not exist...repcopying");
 	&Apache::lonxml::debug("$src does not exist");
 	if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
 	    &Apache::lonxml::debug("Repcopy of $src failed (1)");
@@ -4183,6 +4260,7 @@ sub get_eps_image {
 	    &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
 	    if ( (not -e $src) ||
 		($didrepcopy ne 'ok')) {
+		# &Apache::lonnet::logthis("queuing $orig_src for dynamic eps gen");
 		&Apache::lonxml::debug("Failed to find or replicate $src");
 
 		#if replication failed try to produce eps file dynamically
@@ -4199,8 +4277,24 @@ sub get_eps_image {
 		if ($sext ne "") {	 # Put the ext. back in to uniquify.
 		    $src =~ s/\.eps$/$sext.eps/;
 		}
+
 	    }
 	}
+    } else {
+# 	&Apache::lonnet::logthis("$src exists. queueing for copy.");
+# 	&Apache::lonnet::logthis("Got eps already.. queue for copy");
+	# If the postscript file has spaces in its name,
+	# LaTeX will gratuitiously vomit.  Therefore
+	# queue such files for copy with " " replaced by "_".
+	# printout.pm will know them by their .ps  or .eps extensions.
+	my $newsrc = $orig_src;
+	$newsrc    =~  s|(.*)/res/|/home/httpd/html/res/|;
+	open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
+#	&Apache::lonnet::logthis("Queueing $newsrc for copy");
+	print FILE "$newsrc\n";
+	close FILE;
+	$src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
+	$src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
     }
     my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
     &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");