Annotation of loncom/homework/randomlabel.pm, revision 1.6
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='';
1.6 ! albertel 44: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
! 45: '/res/adm/includes/GLabel.class';
! 46:
1.1 tsai 47: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
1.6 ! albertel 48:
! 49: if ( $bgimg !~ /^http:/ ) {
! 50: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$bgimg;
! 51: $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
! 52: $bgimg=~s-$Apache::lonnet::perlvar{'lonDocRoot'}--;
! 53: $bgimg="http://".$ENV{'SERVER_NAME'}.$bgimg;
! 54: }
1.1 tsai 55: my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval);
56: my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
57: my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval);
58: my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval);
1.4 albertel 59: my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
60: if (!$code) { $code='GLabel.class'; }
61: if (!$codebase) { $codebase='/res/adm/includes/'; }
1.3 tsai 62: $Apache::randomlabel::tlabel_cnt=0;
63: $Apache::randomlabel::ilabel_cnt=0;
64: if ($target eq 'web') {
1.4 albertel 65: $result.="<applet code=\"$code\" codebase=\"$codebase\" width=\"$w\" height=\"$h\">";
1.3 tsai 66: $result.="<param name=\"bgimg\" value=\"$bgimg\">";
1.4 albertel 67: } elsif ($target eq 'tex') {
68: $bgimg=~s/(.gif|.jpg)$/.ps/;
69: $result.='\vspace*{2mm} \\ \noindent \epsfxsize='.$texwidth.' \epsffile{'.
70: $bgimg.'}\setlength{\unitlength}{1mm} \\ \begin{picture}(0,0)(0,-5)';
1.3 tsai 71: } elsif ($target eq 'edit') {
1.4 albertel 72: $result.=&Apache::edit::tag_start($target,$token);
73: $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).'<br />'.
74: &Apache::edit::text_arg('Width(pixel):','width',$token,4).
75: &Apache::edit::text_arg('Height(pixel):','height',$token,4).
76: &Apache::edit::text_arg('TeXWidth(mm):','texwidth',$token,4).
77: '</td></tr><tr><td colspan="3">';
1.3 tsai 78: } elsif ($target eq 'modified') {
1.4 albertel 79: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
80: 'bgimg','width','height',
81: 'texwidth');
82: if ($constructtag) {
83: $result = &Apache::edit::rebuild_tag($token);
84: $result.=&Apache::edit::handle_insert();
85: }
1.1 tsai 86: }
87: return $result;
88: }
89:
90: sub end_randomlabel {
1.3 tsai 91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
92: my $result='';
93: my $count;
94:
1.4 albertel 95:
1.3 tsai 96: if ($target eq 'web') {
1.4 albertel 97: $count = $Apache::randomlabel::tlabel_cnt;
98: if( $count != 0) { $result.= "<param name=\"count\" value=\"$count\">"; }
99: $count = $Apache::randomlabel::ilabel_cnt;
100: if( $count != 0) { $result.= "<param name=\"icount\" value=\"$count\">"; }
1.3 tsai 101: $result .= "</applet><BR />";
1.4 albertel 102: } elsif ($target eq 'tex') {
103: $result='\end{picture}';
104: } elsif ($target eq 'edit') {
105: $result.=&Apache::edit::end_table;
1.3 tsai 106: }
107: return $result;
1.1 tsai 108: }
109:
110: sub start_labelgroup {
111: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
112: my $result='';
113: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
114: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
1.2 tsai 115: $type =~tr/A-Z/a-z/;
1.5 albertel 116: if ($target eq 'web' || $target eq 'tex' ||
117: $target eq 'grade' || $target eq 'answer') {
1.4 albertel 118: $Apache::randomlabel::groupname=$name;
119: $Apache::randomlabel::type=$type;
120: @Apache::randomlabel::xcoord = ();
121: @Apache::randomlabel::ycoord = ();
1.5 albertel 122: @Apache::randomlabel::value = ();
1.4 albertel 123: @Apache::randomlabel::label_arr = ();
124: } elsif ($target eq 'edit') {
125: $result.=&Apache::edit::tag_start($target,$token);
126: $result.=&Apache::edit::text_arg('Name:','name',$token).
127: &Apache::edit::select_arg('Type:','type',['text','image'],$token).
128: '</td></tr><tr><td colspan="3">';
129: } elsif ($target eq 'modified') {
130: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
131: 'name','type');
132: if ($constructtag) {
133: $result = &Apache::edit::rebuild_tag($token);
134: $result.=&Apache::edit::handle_insert();
135: }
136: }
1.3 tsai 137: return $result;
1.1 tsai 138: }
139:
1.5 albertel 140: sub add_vars {
141: my ($name,$order,$label,$labelorder,$value,$safeeval) = @_;
142: my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
143: my $out=Apache::run::run($code,$safeeval);
144: if ($value) {
145: $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
146: $out=Apache::run::run($code,$safeeval);
147: $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
148: $out=Apache::run::run($code,$safeeval);
1.4 albertel 149: }
1.5 albertel 150: $code = '${'.$name."}{'numlocations'}='".($order+1)."';";
151: $out=Apache::run::run($code,$safeeval);
1.4 albertel 152: }
1.5 albertel 153:
1.1 tsai 154: # begin to assign labels to locations
155: sub end_labelgroup {
156: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
157: my $gname = $Apache::randomlabel::groupname;
1.2 tsai 158: my $type = $Apache::randomlabel::type;
1.4 albertel 159: my $result='';
1.5 albertel 160: if ($target eq 'web' || $target eq 'answer' || $target eq 'grade') {
1.4 albertel 161: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
162: &Apache::structuretags::shuffle(\@idx_arr);
163: for(0 .. $#Apache::randomlabel::label_arr) {
164: my $str;
165: my $xstr;
166: my $ystr;
167: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
1.5 albertel 168: my $x = $Apache::randomlabel::xcoord[$_];
169: my $y = $Apache::randomlabel::ycoord[$_];
170: my $value = $Apache::randomlabel::value[$_];
1.4 albertel 171: if( $type eq 'text') {
1.5 albertel 172: &add_vars($gname,$_,$label,$idx_arr[$_],$value,$safeeval);
1.4 albertel 173: $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
174: $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
175: $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
176: $Apache::randomlabel::tlabel_cnt += 1;
177: } elsif ( $type eq 'image') {
1.5 albertel 178: &add_vars($gname,$_,$idx_arr[$_],$idx_arr[$_],$value,$safeeval);
1.4 albertel 179: $str = 'LB'.$Apache::randomlabel::ilabel_cnt;
180: $xstr = 'X'.$Apache::randomlabel::ilabel_cnt;
181: $ystr = 'Y'.$Apache::randomlabel::ilabel_cnt;
182: $Apache::randomlabel::ilabel_cnt += 1;
183: } else {
184: &Apache::lonxml::error('Unknown type of label :'.$type.':');
185: }
1.5 albertel 186: if ($target eq 'web') {
187: $result .= '<param name="' . $str . '" value="'.$label.'">';
188: $result .= '<param name="' . $xstr . '" value="'.$x.'">';
189: $result .= '<param name="' . $ystr . '" value="'.$y.'">';
190: }
1.3 tsai 191: }
1.4 albertel 192: } elsif ($target eq 'tex') {
193: my $WX1=0; # Web x-coord. of upper left corner (ULC)
194: my $WY1=0; # Web y-coord. of (ULC)
195: my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
196: my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
197: my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
198: my $TX1=0;
199: my $TY1=$texwidth*($wheight/$wwidth);
200: my $TX2=$texwidth;
201: my $TY2=0;
202:
203:
204: my $slopex=($wwidth-$WX1)/($TX2-$TX1);
205: my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
206: my $cstx=$wwidth-$slopex*($TX2);
207: my $csty=$wheight-$slopey*($TY2);
208:
209: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
210: &Apache::structuretags::shuffle(\@idx_arr);
211:
212: &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
213: for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
214: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
215: my $x = $Apache::randomlabel::xcoord[$i];
216: my $y = $Apache::randomlabel::ycoord[$i];
1.5 albertel 217: my $value = $Apache::randomlabel::value[$i];
1.4 albertel 218: my $tcX=$x*($texwidth/$wwidth);
219: my $tcY=$TY1-$y*($TY1/$wheight)-2;
220: $tcX=sprintf('%.2f',$tcX);
221: $tcY=sprintf('%.2f',$tcY);
222: $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
223: if( $type eq 'text') {
1.5 albertel 224: &add_vars($gname,$i,$label,$idx_arr[$i],$value,$safeeval);
1.4 albertel 225: } elsif ( $type eq 'image') {
1.5 albertel 226: &add_vars($gname,$i,$idx_arr[$i],$idx_arr[$i],$value,$safeeval);
1.4 albertel 227: } else {
228: &Apache::lonxml::error('Unknown type of label :'.$type.':');
229: }
230: }
231: } elsif ($target eq 'edit') {
232: $result.=&Apache::edit::end_table;
1.1 tsai 233: }
1.4 albertel 234: return $result;
1.1 tsai 235: }
236:
1.5 albertel 237: # <location x="123" y="456" value="some value"/>
1.1 tsai 238: sub start_location {
239: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
240: my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
241: my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
1.5 albertel 242: my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
1.3 tsai 243: my $result='';
1.1 tsai 244: push(@Apache::randomlabel::xcoord,$x);
1.4 albertel 245: push(@Apache::randomlabel::ycoord,$y);
1.5 albertel 246: push(@Apache::randomlabel::value,$value);
1.4 albertel 247: if ($target eq 'edit') {
248: $result.=&Apache::edit::tag_start($target,$token);
249: $result.=&Apache::edit::text_arg('X:','x',$token,4).
250: &Apache::edit::text_arg('Y:','y',$token,4).
1.5 albertel 251: &Apache::edit::text_arg('Value:','value',$token).
1.4 albertel 252: '</td></tr><tr><td colspan="3">';
253: $result.=&Apache::edit::end_table;
254: } elsif ($target eq 'modified') {
255: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1.5 albertel 256: 'x','y','value');
1.4 albertel 257: if ($constructtag) {
258: $result = &Apache::edit::rebuild_tag($token);
259: $result.=&Apache::edit::handle_insert();
260: }
261: }
1.3 tsai 262: return $result;
1.1 tsai 263: }
264:
265: sub end_location {
1.3 tsai 266: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4 albertel 267: my @result;
268: if ($target eq 'edit') { @result=('','no') }
269: return @result;
1.1 tsai 270: }
271:
1.2 tsai 272: # <label>$var_abc</label>
1.1 tsai 273: sub start_label {
274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.3 tsai 275: my $result='';
1.5 albertel 276: if ($target eq 'web' || $target eq 'tex' ||
277: $target eq 'grade' || $target eq 'answer') {
1.4 albertel 278: my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
279: push(@Apache::randomlabel::label_arr,$ltext);
280: } elsif ($target eq 'edit') {
281: $result.=&Apache::edit::tag_start($target,$token);
282: my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
283: $result.='</td></tr><tr><td colspan="3">'.
284: &Apache::edit::editfield('',$text,'',20,1).
285: &Apache::edit::end_table();
286: } elsif ($target eq 'modified') {
287: my $text=$$parser[-1]->get_text("/label");
288: $result.=&Apache::edit::modifiedfield($token);
289: }
1.3 tsai 290: return $result;
1.1 tsai 291: }
292:
293: sub end_label {
1.3 tsai 294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.4 albertel 295: my @result;
296: if ($target eq 'edit') { @result=('','no') }
297: return @result;
1.1 tsai 298: }
299:
300:
301:
302: 1;
303: __END__
304:
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