Annotation of loncom/homework/randomlabel.pm, revision 1.3
1.1 tsai 1: # The LearningOnline Network with CAPA
2: # random labelling tool
1.3 ! tsai 3: # 7/20/2001 Isaac Tsai, initial syntax
! 4: # 8/10/2001 Isaac Tsai,
! 5: # 8/30/2001 Isaac Tsai,
1.1 tsai 6: # SYNTAX:
7: # <randomlabel bgimg=URL code=JAVACLASS codebase=URL width=12 height=45>
1.2 tsai 8: # <labelgroup name=GroupOne type=image>
1.1 tsai 9: # <location x=123 y=456 />
10: # <location x=321 y=654 />
11: # <location x=213 y=546 />
12: # <label>IMG-URL</label>
13: # <label>IMG-URL</label>
14: # <label>IMG-URL</label>
15: # </labelgroup>
16: # <labelgroup name=GroupTwo type=text>
17: # <location x=12 y=45 />
18: # <location x=32 y=65 />
19: # <location x=21 y=54 />
1.3 ! tsai 20: # <label>TEXT-1</label>
! 21: # <label>TEXT-2</label>
! 22: # <label>TEXT-3</label>
1.1 tsai 23: # </labelgroup>
24: # </randomlabel>
25: # ===========================================
1.3 ! tsai 26: # side effect:
! 27: # location (123,456): $GroupOne[0] = 2 # images give out indexes
! 28: # (321,654): $GroupOne[1] = 1
! 29: # (213,546): $GroupOne[2] = 0
! 30: # location (12,45) : $GroupTwo[0] = "TEXT-3"
! 31: # (32,65) : $GroupTwo[1] = "TEXT-1"
! 32: # (21,54) : $GroupTwo[2] = "TEXT-2"
1.1 tsai 33: # ===========================================
34: package Apache::randomlabel;
35: use strict;
36:
37: sub BEGIN {
38: &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
39: }
40:
41: sub start_randomlabel {
42: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
43: my $result='';
44: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
45: my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval);
46: my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
47: my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval);
48: my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval);
49:
1.3 ! tsai 50: $Apache::randomlabel::tlabel_cnt=0;
! 51: $Apache::randomlabel::ilabel_cnt=0;
! 52: if ($target eq 'web') {
! 53: $result.="<applet code=$code codebase=$codebase width=\"$w\" height=\"$h\">";
! 54: $result.="<param name=\"bgimg\" value=\"$bgimg\">";
! 55: } elsif ($target eq 'edit') {
! 56: } elsif ($target eq 'modified') {
! 57: } else {
1.1 tsai 58: }
59: return $result;
60: }
61:
62: sub end_randomlabel {
1.3 ! tsai 63: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 64: my $result='';
! 65: my $count;
! 66:
! 67: $count = $Apache::randomlabel::tlabel_cnt;
! 68: if( $count != 0) {
! 69: $result.= "<param name=\"count\" value=\"$count\">";
! 70: }
! 71: $count = $Apache::randomlabel::ilabel_cnt;
! 72: if( $count != 0) {
! 73: $result.= "<param name=\"icount\" value=\"$count\">";
! 74: }
! 75: if ($target eq 'web') {
! 76: $result .= "</applet><BR />";
! 77: }
! 78: return $result;
1.1 tsai 79: }
80:
81: sub start_labelgroup {
82: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
83: my $result='';
84: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
85: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2 tsai 86: $type =~tr/A-Z/a-z/;
1.1 tsai 87: $Apache::randomlabel::groupname=$name;
1.2 tsai 88: $Apache::randomlabel::type=$type;
1.1 tsai 89: @Apache::randomlabel::xcoord = ();
90: @Apache::randomlabel::ycoord = ();
91: @Apache::randomlabel::label_arr = ();
1.3 ! tsai 92: return $result;
1.1 tsai 93: }
94:
95: # begin to assign labels to locations
96: sub end_labelgroup {
97: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
98: my $gname = $Apache::randomlabel::groupname;
1.3 ! tsai 99: my $count;
1.2 tsai 100: my $type = $Apache::randomlabel::type;
1.1 tsai 101: my $code;
102: my $out;
103: my $label;
104: my $x;
105: my $y;
1.3 ! tsai 106: my $text='';
1.2 tsai 107: my $str;
108: my $xstr;
109: my $ystr;
110:
1.1 tsai 111: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
112: &Apache::structuretags::shuffle(\@idx_arr);
113: for(0 .. $#Apache::randomlabel::label_arr) {
114: $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.3 ! tsai 115: if( $type eq 'text') {
! 116: $code = "push(\@$gname, $label);" ;
! 117: $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
! 118: $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
! 119: $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
! 120: $Apache::randomlabel::tlabel_cnt += 1;
! 121: } elsif ( $type eq 'image') {
! 122: $code = "push(\@$gname, $idx_arr[$_]);" ;
! 123: $str = 'LB'.$Apache::randomlabel::ilabel_cnt;
! 124: $xstr = 'X'.$Apache::randomlabel::ilabel_cnt;
! 125: $ystr = 'Y'.$Apache::randomlabel::ilabel_cnt;
! 126: $Apache::randomlabel::ilabel_cnt += 1;
! 127: } else {
! 128: }
! 129: # $x = pop @Apache::randomlabel::xcoord;
! 130: # $y = pop @Apache::randomlabel::ycoord;
! 131: $x = $Apache::randomlabel::xcoord[$_];
! 132: $y = $Apache::randomlabel::ycoord[$_];
! 133: $text .= "<param name=\"" . $str . "\" value=\"$label\">";
! 134: $text .= "<param name=\"" . $xstr . "\" value=\"$x\"> ";
! 135: $text .= "<param name=\"" . $ystr . "\" value=\"$y\">";
1.1 tsai 136: $out=Apache::run::run($code,$safeeval);
137: }
138: return $text;
139: }
140:
1.2 tsai 141: # <location x=123 y=456 />
1.1 tsai 142: sub start_location {
143: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
144: my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
145: my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
1.3 ! tsai 146: my $result='';
1.1 tsai 147:
148: push(@Apache::randomlabel::xcoord,$x);
149: push(@Apache::randomlabel::ycoord,$y);
1.3 ! tsai 150: return $result;
1.1 tsai 151: }
152:
153: sub end_location {
1.3 ! tsai 154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 155: my $result='';
! 156: return $result;
1.1 tsai 157: }
158:
1.2 tsai 159: # <label>$var_abc</label>
1.1 tsai 160: sub start_label {
161: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
162: my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[$#$parser]);
1.3 ! tsai 163: my $result='';
1.1 tsai 164:
165: push(@Apache::randomlabel::label_arr,$ltext);
1.3 ! tsai 166: return $result;
1.1 tsai 167: }
168:
169: sub end_label {
1.3 ! tsai 170: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 171: my $result='';
! 172:
! 173: return $result;
1.1 tsai 174: }
175:
176:
177:
178: 1;
179: __END__
180:
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