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Annotation of loncom/homework/randomlabel.pm, revision 1.1

1.1     ! tsai        1: # The LearningOnline Network with CAPA
        !             2: # random labelling tool
        !             3: # 7/20/2001 Isaac Tsai
        !             4: # 8/10/2001 Isaac Tsai
        !             5: # SYNTAX:
        !             6: # <randomlabel bgimg=URL code=JAVACLASS codebase=URL width=12 height=45>
        !             7: #    <labelgroup name=GroupOne type=img>
        !             8: #      <location x=123 y=456 />
        !             9: #      <location x=321 y=654 />
        !            10: #      <location x=213 y=546 />
        !            11: #      <label>IMG-URL</label>
        !            12: #      <label>IMG-URL</label>
        !            13: #      <label>IMG-URL</label>
        !            14: #    </labelgroup>
        !            15: #    <labelgroup name=GroupTwo type=text>
        !            16: #      <location x=12 y=45 />
        !            17: #      <location x=32 y=65 />
        !            18: #      <location x=21 y=54 />
        !            19: #      <label>TEXT</label>
        !            20: #      <label>TEXT</label>
        !            21: #      <label>TEXT</label>
        !            22: #    </labelgroup>
        !            23: #   </randomlabel>
        !            24: #  ===========================================
        !            25: #    location (123,456): $GroupOne[1] = ...
        !            26: #             (321,654): $GroupOne[2] = ...
        !            27: #             (213,546): $GroupOne[3] = ...
        !            28: #    location (12,45)  : $GroupOne[1] = ...
        !            29: #             (321,654): $GroupOne[2] = ...
        !            30: #             (213,546): $GroupOne[3] = ...
        !            31: #  ===========================================
        !            32: package Apache::randomlabel;
        !            33: use strict;
        !            34: 
        !            35: sub BEGIN {
        !            36:   &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
        !            37: }
        !            38: 
        !            39: sub start_randomlabel {
        !            40:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !            41:   my $result='';
        !            42:   my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
        !            43:   my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval);
        !            44:   my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
        !            45:   my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval);
        !            46:   my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval);
        !            47:   
        !            48:   $result.="<applet code=$code codebase=$codebase width=\"$w\" height=\"$h\">";
        !            49:   $result.="<param name=\"bgimg\" value=\"$bgimg\">";
        !            50:   if ($target eq 'edit') {
        !            51:   }
        !            52:   if ($target eq 'modified') {
        !            53:   }
        !            54:   return $result;
        !            55: }
        !            56: 
        !            57: sub end_randomlabel {
        !            58:   return '</applet><BR />';
        !            59: }
        !            60: 
        !            61: sub start_labelgroup {
        !            62:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !            63:   my $result='';
        !            64:   my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
        !            65:   my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
        !            66:   $Apache::randomlabel::groupname=$name;
        !            67:   @Apache::randomlabel::xcoord = ();
        !            68:   @Apache::randomlabel::ycoord = ();
        !            69:   @Apache::randomlabel::label_arr  = ();
        !            70:   return '';
        !            71: }
        !            72: 
        !            73: # begin to assign labels to locations
        !            74: sub end_labelgroup {
        !            75:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !            76:   my $gname = $Apache::randomlabel::groupname;
        !            77:   my $count = $#Apache::randomlabel::label_arr + 1;
        !            78:   my $code;
        !            79:   my $out;
        !            80:   my $label;
        !            81:   my $x;
        !            82:   my $y;
        !            83:   my $text= "<param name=\"count\" value=\"$count\">";
        !            84: 
        !            85:   my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
        !            86:   &Apache::structuretags::shuffle(\@idx_arr);
        !            87:   for(0 .. $#Apache::randomlabel::label_arr) {
        !            88:     $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
        !            89:     $x = pop @Apache::randomlabel::xcoord;
        !            90:     $y = pop @Apache::randomlabel::ycoord;
        !            91:     $text .= "<param name=\"LB". $_ . "\" value=\"$label\">";
        !            92:     $text .= "<param name=\"X" . $_ . "\" value=\"$x\"> ";
        !            93:     $text .= "<param name=\"Y" . $_ . "\" value=\"$y\">";
        !            94:     $code = "push(\@$gname, $label);" ;
        !            95:     # print("CODE=$code");
        !            96:     # $out=Apache::run::run($code,$safeeval,$$parstack[$#$parstack]);
        !            97:     $out=Apache::run::run($code,$safeeval);
        !            98:   }
        !            99:   
        !           100:   return $text;
        !           101: }
        !           102: 
        !           103: sub start_location {
        !           104:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           105:   my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
        !           106:   my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
        !           107:   
        !           108:   push(@Apache::randomlabel::xcoord,$x);
        !           109:   push(@Apache::randomlabel::ycoord,$y); 
        !           110:   return '';
        !           111: }
        !           112: 
        !           113: sub end_location {
        !           114:   return '';
        !           115: }
        !           116: 
        !           117: sub start_label {
        !           118:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           119:   my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[$#$parser]);
        !           120: 
        !           121:   push(@Apache::randomlabel::label_arr,$ltext);
        !           122:   return '';
        !           123: }
        !           124: 
        !           125: sub end_label {
        !           126:   return '';
        !           127: }
        !           128: 
        !           129: 
        !           130: 
        !           131: 1;
        !           132: __END__
        !           133: