Annotation of loncom/homework/randomlabel.pm, revision 1.5
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:
1.4 albertel 7: # <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
8: # <labelgroup name="GroupOne" type="image">
9: # <location x="123" y="456" />
10: # <location x="321" y="654" />
11: # <location x="213" y="546" />
12: # <label description="TEXT-1">IMG-URL</label>
13: # <label description="TEXT-2">IMG-URL</label>
14: # <label description="TEXT-3">IMG-URL</label>
1.1 tsai 15: # </labelgroup>
1.4 albertel 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);
1.4 albertel 49: my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
50: if (!$code) { $code='GLabel.class'; }
51: if (!$codebase) { $codebase='/res/adm/includes/'; }
1.3 tsai 52: $Apache::randomlabel::tlabel_cnt=0;
53: $Apache::randomlabel::ilabel_cnt=0;
54: if ($target eq 'web') {
1.4 albertel 55: $result.="<applet code=\"$code\" codebase=\"$codebase\" width=\"$w\" height=\"$h\">";
1.3 tsai 56: $result.="<param name=\"bgimg\" value=\"$bgimg\">";
1.4 albertel 57: } elsif ($target eq 'tex') {
58: $bgimg=~s/(.gif|.jpg)$/.ps/;
59: $result.='\vspace*{2mm} \\ \noindent \epsfxsize='.$texwidth.' \epsffile{'.
60: $bgimg.'}\setlength{\unitlength}{1mm} \\ \begin{picture}(0,0)(0,-5)';
1.3 tsai 61: } elsif ($target eq 'edit') {
1.4 albertel 62: $result.=&Apache::edit::tag_start($target,$token);
63: $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).'<br />'.
64: &Apache::edit::text_arg('Width(pixel):','width',$token,4).
65: &Apache::edit::text_arg('Height(pixel):','height',$token,4).
66: &Apache::edit::text_arg('TeXWidth(mm):','texwidth',$token,4).
67: '</td></tr><tr><td colspan="3">';
1.3 tsai 68: } elsif ($target eq 'modified') {
1.4 albertel 69: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
70: 'bgimg','width','height',
71: 'texwidth');
72: if ($constructtag) {
73: $result = &Apache::edit::rebuild_tag($token);
74: $result.=&Apache::edit::handle_insert();
75: }
1.1 tsai 76: }
77: return $result;
78: }
79:
80: sub end_randomlabel {
1.3 tsai 81: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
82: my $result='';
83: my $count;
84:
1.4 albertel 85:
1.3 tsai 86: if ($target eq 'web') {
1.4 albertel 87: $count = $Apache::randomlabel::tlabel_cnt;
88: if( $count != 0) { $result.= "<param name=\"count\" value=\"$count\">"; }
89: $count = $Apache::randomlabel::ilabel_cnt;
90: if( $count != 0) { $result.= "<param name=\"icount\" value=\"$count\">"; }
1.3 tsai 91: $result .= "</applet><BR />";
1.4 albertel 92: } elsif ($target eq 'tex') {
93: $result='\end{picture}';
94: } elsif ($target eq 'edit') {
95: $result.=&Apache::edit::end_table;
1.3 tsai 96: }
97: return $result;
1.1 tsai 98: }
99:
100: sub start_labelgroup {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
102: my $result='';
103: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
104: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2 tsai 105: $type =~tr/A-Z/a-z/;
1.5 ! albertel 106: if ($target eq 'web' || $target eq 'tex' ||
! 107: $target eq 'grade' || $target eq 'answer') {
1.4 albertel 108: $Apache::randomlabel::groupname=$name;
109: $Apache::randomlabel::type=$type;
110: @Apache::randomlabel::xcoord = ();
111: @Apache::randomlabel::ycoord = ();
1.5 ! albertel 112: @Apache::randomlabel::value = ();
1.4 albertel 113: @Apache::randomlabel::label_arr = ();
114: } elsif ($target eq 'edit') {
115: $result.=&Apache::edit::tag_start($target,$token);
116: $result.=&Apache::edit::text_arg('Name:','name',$token).
117: &Apache::edit::select_arg('Type:','type',['text','image'],$token).
118: '</td></tr><tr><td colspan="3">';
119: } elsif ($target eq 'modified') {
120: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
121: 'name','type');
122: if ($constructtag) {
123: $result = &Apache::edit::rebuild_tag($token);
124: $result.=&Apache::edit::handle_insert();
125: }
126: }
1.3 tsai 127: return $result;
1.1 tsai 128: }
129:
1.5 ! albertel 130: sub add_vars {
! 131: my ($name,$order,$label,$labelorder,$value,$safeeval) = @_;
! 132: my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
! 133: my $out=Apache::run::run($code,$safeeval);
! 134: if ($value) {
! 135: $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
! 136: $out=Apache::run::run($code,$safeeval);
! 137: $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
! 138: $out=Apache::run::run($code,$safeeval);
1.4 albertel 139: }
1.5 ! albertel 140: $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
! 141: $out=Apache::run::run($code,$safeeval);
1.4 albertel 142: }
1.5 ! albertel 143:
1.1 tsai 144: # begin to assign labels to locations
145: sub end_labelgroup {
146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
147: my $gname = $Apache::randomlabel::groupname;
1.2 tsai 148: my $type = $Apache::randomlabel::type;
1.4 albertel 149: my $result='';
1.5 ! albertel 150: if ($target eq 'web' || $target eq 'answer' || $target eq 'grade') {
1.4 albertel 151: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
152: &Apache::structuretags::shuffle(\@idx_arr);
153: for(0 .. $#Apache::randomlabel::label_arr) {
154: my $str;
155: my $xstr;
156: my $ystr;
157: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.5 ! albertel 158: my $x = $Apache::randomlabel::xcoord[$_];
! 159: my $y = $Apache::randomlabel::ycoord[$_];
! 160: my $value = $Apache::randomlabel::value[$_];
1.4 albertel 161: if( $type eq 'text') {
1.5 ! albertel 162: &add_vars($gname,$_,$label,$idx_arr[$_],$value,$safeeval);
1.4 albertel 163: $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
164: $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
165: $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
166: $Apache::randomlabel::tlabel_cnt += 1;
167: } elsif ( $type eq 'image') {
1.5 ! albertel 168: &add_vars($gname,$_,$idx_arr[$_],$idx_arr[$_],$value,$safeeval);
1.4 albertel 169: $str = 'LB'.$Apache::randomlabel::ilabel_cnt;
170: $xstr = 'X'.$Apache::randomlabel::ilabel_cnt;
171: $ystr = 'Y'.$Apache::randomlabel::ilabel_cnt;
172: $Apache::randomlabel::ilabel_cnt += 1;
173: } else {
174: &Apache::lonxml::error('Unknown type of label :'.$type.':');
175: }
1.5 ! albertel 176: if ($target eq 'web') {
! 177: $result .= '<param name="' . $str . '" value="'.$label.'">';
! 178: $result .= '<param name="' . $xstr . '" value="'.$x.'">';
! 179: $result .= '<param name="' . $ystr . '" value="'.$y.'">';
! 180: }
1.3 tsai 181: }
1.4 albertel 182: } elsif ($target eq 'tex') {
183: my $WX1=0; # Web x-coord. of upper left corner (ULC)
184: my $WY1=0; # Web y-coord. of (ULC)
185: my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
186: my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
187: my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
188: my $TX1=0;
189: my $TY1=$texwidth*($wheight/$wwidth);
190: my $TX2=$texwidth;
191: my $TY2=0;
192:
193:
194: my $slopex=($wwidth-$WX1)/($TX2-$TX1);
195: my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
196: my $cstx=$wwidth-$slopex*($TX2);
197: my $csty=$wheight-$slopey*($TY2);
198:
199: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
200: &Apache::structuretags::shuffle(\@idx_arr);
201:
202: &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
203: for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
204: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
205: my $x = $Apache::randomlabel::xcoord[$i];
206: my $y = $Apache::randomlabel::ycoord[$i];
1.5 ! albertel 207: my $value = $Apache::randomlabel::value[$i];
1.4 albertel 208: my $tcX=$x*($texwidth/$wwidth);
209: my $tcY=$TY1-$y*($TY1/$wheight)-2;
210: $tcX=sprintf('%.2f',$tcX);
211: $tcY=sprintf('%.2f',$tcY);
212: $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
213: if( $type eq 'text') {
1.5 ! albertel 214: &add_vars($gname,$i,$label,$idx_arr[$i],$value,$safeeval);
1.4 albertel 215: } elsif ( $type eq 'image') {
1.5 ! albertel 216: &add_vars($gname,$i,$idx_arr[$i],$idx_arr[$i],$value,$safeeval);
1.4 albertel 217: } else {
218: &Apache::lonxml::error('Unknown type of label :'.$type.':');
219: }
220: }
221: } elsif ($target eq 'edit') {
222: $result.=&Apache::edit::end_table;
1.1 tsai 223: }
1.4 albertel 224: return $result;
1.1 tsai 225: }
226:
1.5 ! albertel 227: # <location x="123" y="456" value="some value"/>
1.1 tsai 228: sub start_location {
229: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
230: my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
231: my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
1.5 ! albertel 232: my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
1.3 tsai 233: my $result='';
1.1 tsai 234: push(@Apache::randomlabel::xcoord,$x);
1.4 albertel 235: push(@Apache::randomlabel::ycoord,$y);
1.5 ! albertel 236: push(@Apache::randomlabel::value,$value);
1.4 albertel 237: if ($target eq 'edit') {
238: $result.=&Apache::edit::tag_start($target,$token);
239: $result.=&Apache::edit::text_arg('X:','x',$token,4).
240: &Apache::edit::text_arg('Y:','y',$token,4).
1.5 ! albertel 241: &Apache::edit::text_arg('Value:','value',$token).
1.4 albertel 242: '</td></tr><tr><td colspan="3">';
243: $result.=&Apache::edit::end_table;
244: } elsif ($target eq 'modified') {
245: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1.5 ! albertel 246: 'x','y','value');
1.4 albertel 247: if ($constructtag) {
248: $result = &Apache::edit::rebuild_tag($token);
249: $result.=&Apache::edit::handle_insert();
250: }
251: }
1.3 tsai 252: return $result;
1.1 tsai 253: }
254:
255: sub end_location {
1.3 tsai 256: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4 albertel 257: my @result;
258: if ($target eq 'edit') { @result=('','no') }
259: return @result;
1.1 tsai 260: }
261:
1.2 tsai 262: # <label>$var_abc</label>
1.1 tsai 263: sub start_label {
264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.3 tsai 265: my $result='';
1.5 ! albertel 266: if ($target eq 'web' || $target eq 'tex' ||
! 267: $target eq 'grade' || $target eq 'answer') {
1.4 albertel 268: my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
269: push(@Apache::randomlabel::label_arr,$ltext);
270: } elsif ($target eq 'edit') {
271: $result.=&Apache::edit::tag_start($target,$token);
272: my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
273: $result.='</td></tr><tr><td colspan="3">'.
274: &Apache::edit::editfield('',$text,'',20,1).
275: &Apache::edit::end_table();
276: } elsif ($target eq 'modified') {
277: my $text=$$parser[-1]->get_text("/label");
278: $result.=&Apache::edit::modifiedfield($token);
279: }
1.3 tsai 280: return $result;
1.1 tsai 281: }
282:
283: sub end_label {
1.3 tsai 284: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4 albertel 285: my @result;
286: if ($target eq 'edit') { @result=('','no') }
287: return @result;
1.1 tsai 288: }
289:
290:
291:
292: 1;
293: __END__
294:
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