--- loncom/homework/edit.pm	2003/12/18 19:59:24	1.74
+++ loncom/homework/edit.pm	2004/01/12 19:53:54	1.76
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.74 2003/12/18 19:59:24 albertel Exp $
+# $Id: edit.pm,v 1.76 2004/01/12 19:53:54 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -766,6 +766,44 @@ target="imagechoice">Click Coordinate Pa
 ENDBUTTON
     return $result;
 }
+
+# coordinate polygon (x1,y1)-(x2,y2)...
+sub entercoordpolygon {
+    my ($id,$mode,$width,$height) = @_;
+    unless ($Apache::edit::bgimgsrc) { return ''; }
+    &Apache::lonnet::logthis($Apache::edit::bgimgsrc);
+    my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
+    &Apache::lonnet::logthis($Apache::edit::bgfile);
+    my $form    = 'lonhomework';
+    my $element;
+    if (! defined($mode) || $mode eq 'attribute') {
+        $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
+    } elsif ($mode eq 'textnode') {  # for data between <tag> ... </tag>
+        $element = &Apache::lonnet::escape('homework_edit_'.
+                                           $Apache::lonxml::curdepth);
+    }
+    my $id=$Apache::lonxml::curdepth;
+    my %data=("imagechoice.$id.mode"      =>'polygon',
+	      "imagechoice.$id.formname"  =>$form,
+	      "imagechoice.$id.file"      =>$bgfile,
+	      "imagechoice.$id.formcoord" =>$element);
+    if ($height) {
+	$data{"imagechoice.$id.formheight"}=$height.'_'.
+	    $Apache::edit::bgimgsrccurdepth;
+    }
+    if ($width) {
+	$data{"imagechoice.$id.formwidth"}=$width.'_'.
+	    $Apache::edit::bgimgsrccurdepth;
+    }
+    &Apache::lonnet::appenv(%data);
+    my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">Create Polygon Data</a>';
+    return $result;
+}
+
+sub deletecoorddata {
+    &Apache::lonnet::delenv("imagechoice\\.");
+}
+
 #----------------------------------------------------- browse
 sub browse {
     # insert a link to call up the filesystem browser (lonindexer)