--- loncom/homework/randomlabel.pm 2001/08/29 19:48:26 1.2
+++ loncom/homework/randomlabel.pm 2001/10/13 05:57:43 1.4
@@ -1,33 +1,35 @@
# The LearningOnline Network with CAPA
# random labelling tool
-# 7/20/2001 Isaac Tsai
-# 8/10/2001 Isaac Tsai
+# 7/20/2001 Isaac Tsai, initial syntax
+# 8/10/2001 Isaac Tsai,
+# 8/30/2001 Isaac Tsai,
# SYNTAX:
-# <randomlabel bgimg=URL code=JAVACLASS codebase=URL width=12 height=45>
-# <labelgroup name=GroupOne type=image>
-# <location x=123 y=456 />
-# <location x=321 y=654 />
-# <location x=213 y=546 />
-# <label>IMG-URL</label>
-# <label>IMG-URL</label>
-# <label>IMG-URL</label>
+# <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
+# <labelgroup name="GroupOne" type="image">
+# <location x="123" y="456" />
+# <location x="321" y="654" />
+# <location x="213" y="546" />
+# <label description="TEXT-1">IMG-URL</label>
+# <label description="TEXT-2">IMG-URL</label>
+# <label description="TEXT-3">IMG-URL</label>
# </labelgroup>
-# <labelgroup name=GroupTwo type=text>
-# <location x=12 y=45 />
-# <location x=32 y=65 />
-# <location x=21 y=54 />
-# <label>TEXT</label>
-# <label>TEXT</label>
-# <label>TEXT</label>
+# <labelgroup name="GroupTwo" type="text">
+# <location x="12" y="45" />
+# <location x="32" y="65" />
+# <location x="21" y="54" />
+# <label>TEXT-1</label>
+# <label>TEXT-2</label>
+# <label>TEXT-3</label>
# </labelgroup>
# </randomlabel>
# ===========================================
-# location (123,456): $GroupOne[1] = ...
-# (321,654): $GroupOne[2] = ...
-# (213,546): $GroupOne[3] = ...
-# location (12,45) : $GroupOne[1] = ...
-# (321,654): $GroupOne[2] = ...
-# (213,546): $GroupOne[3] = ...
+# side effect:
+# location (123,456): $GroupOne[0] = 2 # images give out indexes
+# (321,654): $GroupOne[1] = 1
+# (213,546): $GroupOne[2] = 0
+# location (12,45) : $GroupTwo[0] = "TEXT-3"
+# (32,65) : $GroupTwo[1] = "TEXT-1"
+# (21,54) : $GroupTwo[2] = "TEXT-2"
# ===========================================
package Apache::randomlabel;
use strict;
@@ -44,18 +46,55 @@ sub start_randomlabel {
my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval);
my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval);
-
- $result.="<applet code=$code codebase=$codebase width=\"$w\" height=\"$h\">";
- $result.="<param name=\"bgimg\" value=\"$bgimg\">";
- if ($target eq 'edit') {
- }
- if ($target eq 'modified') {
+ my $texwidth= &Apache::lonxml::get_param('texwidth',$parstack,$safeeval);
+ if (!$code) { $code='GLabel.class'; }
+ if (!$codebase) { $codebase='/res/adm/includes/'; }
+ $Apache::randomlabel::tlabel_cnt=0;
+ $Apache::randomlabel::ilabel_cnt=0;
+ if ($target eq 'web') {
+ $result.="<applet code=\"$code\" codebase=\"$codebase\" width=\"$w\" height=\"$h\">";
+ $result.="<param name=\"bgimg\" value=\"$bgimg\">";
+ } elsif ($target eq 'tex') {
+ $bgimg=~s/(.gif|.jpg)$/.ps/;
+ $result.='\vspace*{2mm} \\ \noindent \epsfxsize='.$texwidth.' \epsffile{'.
+ $bgimg.'}\setlength{\unitlength}{1mm} \\ \begin{picture}(0,0)(0,-5)';
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).'<br />'.
+ &Apache::edit::text_arg('Width(pixel):','width',$token,4).
+ &Apache::edit::text_arg('Height(pixel):','height',$token,4).
+ &Apache::edit::text_arg('TeXWidth(mm):','texwidth',$token,4).
+ '</td></tr><tr><td colspan="3">';
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
+ 'bgimg','width','height',
+ 'texwidth');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
}
return $result;
}
sub end_randomlabel {
- return '</applet><BR />';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ my $count;
+
+
+ if ($target eq 'web') {
+ $count = $Apache::randomlabel::tlabel_cnt;
+ if( $count != 0) { $result.= "<param name=\"count\" value=\"$count\">"; }
+ $count = $Apache::randomlabel::ilabel_cnt;
+ if( $count != 0) { $result.= "<param name=\"icount\" value=\"$count\">"; }
+ $result .= "</applet><BR />";
+ } elsif ($target eq 'tex') {
+ $result='\end{picture}';
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::end_table;
+ }
+ return $result;
}
sub start_labelgroup {
@@ -64,56 +103,114 @@ sub start_labelgroup {
my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
$type =~tr/A-Z/a-z/;
- $Apache::randomlabel::groupname=$name;
- $Apache::randomlabel::type=$type;
- @Apache::randomlabel::xcoord = ();
- @Apache::randomlabel::ycoord = ();
- @Apache::randomlabel::label_arr = ();
- return '';
+ if ($target eq 'web' || $target eq 'tex') {
+ $Apache::randomlabel::groupname=$name;
+ $Apache::randomlabel::type=$type;
+ @Apache::randomlabel::xcoord = ();
+ @Apache::randomlabel::ycoord = ();
+ @Apache::randomlabel::label_arr = ();
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $result.=&Apache::edit::text_arg('Name:','name',$token).
+ &Apache::edit::select_arg('Type:','type',['text','image'],$token).
+ '</td></tr><tr><td colspan="3">';
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
+ 'name','type');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
+ }
+ return $result;
}
+sub add_var {
+ my ($name,$value,$type,$safeeval) = @_;
+ if ($type eq 'array') {
+ my $code = 'push(@'.$name.',\''.$value.'\');';
+ my $out=Apache::run::run($code,$safeeval);
+ } else {
+ &Apache::lonxml::error('Unsupported add_var type :'.$type.':');
+ }
+}
# begin to assign labels to locations
sub end_labelgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $gname = $Apache::randomlabel::groupname;
- my $count = $#Apache::randomlabel::label_arr + 1;
my $type = $Apache::randomlabel::type;
- my $code;
- my $out;
- my $label;
- my $x;
- my $y;
- my $text;
- my $str;
- my $xstr;
- my $ystr;
-
- if( $type eq 'text') {
- $text= "<param name=\"count\" value=\"$count\">";
- $str = 'LB';
- $xstr = 'X';
- $ystr = 'Y';
- }
- if( $type eq 'image') {
- $text= "<param name=\"icount\" value=\"$count\">";
- $str = 'IMG';
- $xstr = 'IX';
- $ystr = 'IY';
- }
- my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
- &Apache::structuretags::shuffle(\@idx_arr);
- for(0 .. $#Apache::randomlabel::label_arr) {
- $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
- $x = pop @Apache::randomlabel::xcoord;
- $y = pop @Apache::randomlabel::ycoord;
- $text .= "<param name=\"" . $str . $_ . "\" value=\"$label\">";
- $text .= "<param name=\"" . $xstr . $_ . "\" value=\"$x\"> ";
- $text .= "<param name=\"" . $ystr . $_ . "\" value=\"$y\">";
- $code = "push(\@$gname, $label);" ;
- $out=Apache::run::run($code,$safeeval);
+ my $result='';
+ if ($target eq 'web') {
+ my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
+ &Apache::structuretags::shuffle(\@idx_arr);
+ for(0 .. $#Apache::randomlabel::label_arr) {
+ my $str;
+ my $xstr;
+ my $ystr;
+ my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
+ if( $type eq 'text') {
+ &add_var($gname,$label,'array',$safeeval);
+ $str = 'LB'.$Apache::randomlabel::tlabel_cnt;
+ $xstr = 'X'.$Apache::randomlabel::tlabel_cnt;
+ $ystr = 'Y'.$Apache::randomlabel::tlabel_cnt;
+ $Apache::randomlabel::tlabel_cnt += 1;
+ } elsif ( $type eq 'image') {
+ &add_var($gname,$idx_arr[$_],'array',$safeeval);
+ $str = 'LB'.$Apache::randomlabel::ilabel_cnt;
+ $xstr = 'X'.$Apache::randomlabel::ilabel_cnt;
+ $ystr = 'Y'.$Apache::randomlabel::ilabel_cnt;
+ $Apache::randomlabel::ilabel_cnt += 1;
+ } else {
+ &Apache::lonxml::error('Unknown type of label :'.$type.':');
+ }
+ my $x = $Apache::randomlabel::xcoord[$_];
+ my $y = $Apache::randomlabel::ycoord[$_];
+ $result .= '<param name="' . $str . '" value="'.$label.'">';
+ $result .= '<param name="' . $xstr . '" value="'.$x.'">';
+ $result .= '<param name="' . $ystr . '" value="'.$y.'">';
+ }
+ } elsif ($target eq 'tex') {
+ my $WX1=0; # Web x-coord. of upper left corner (ULC)
+ my $WY1=0; # Web y-coord. of (ULC)
+ my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
+ my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
+ my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,-2);
+ my $TX1=0;
+ my $TY1=$texwidth*($wheight/$wwidth);
+ my $TX2=$texwidth;
+ my $TY2=0;
+
+
+ my $slopex=($wwidth-$WX1)/($TX2-$TX1);
+ my $slopey=($wheight-$WY1)/($TY2-($TY1-1.0));
+ my $cstx=$wwidth-$slopex*($TX2);
+ my $csty=$wheight-$slopey*($TY2);
+
+ my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
+ &Apache::structuretags::shuffle(\@idx_arr);
+
+ &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
+ for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
+ my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
+ my $x = $Apache::randomlabel::xcoord[$i];
+ my $y = $Apache::randomlabel::ycoord[$i];
+ my $tcX=$x*($texwidth/$wwidth);
+ my $tcY=$TY1-$y*($TY1/$wheight)-2;
+ $tcX=sprintf('%.2f',$tcX);
+ $tcY=sprintf('%.2f',$tcY);
+ $result.='\put('.$tcX.','.$tcY.'){\normalsize \bf '.$label.'}'."\n";
+ if( $type eq 'text') {
+ &add_var($gname,$label,'array',$safeeval);
+ } elsif ( $type eq 'image') {
+ &add_var($gname,$idx_arr[$i],'array',$safeeval);
+ } else {
+ &Apache::lonxml::error('Unknown type of label :'.$type.':');
+ }
+ }
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::end_table;
}
-
- return $text;
+ return $result;
}
# <location x=123 y=456 />
@@ -121,27 +218,58 @@ sub start_location {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
-
+ my $result='';
push(@Apache::randomlabel::xcoord,$x);
- push(@Apache::randomlabel::ycoord,$y);
- return '';
+ push(@Apache::randomlabel::ycoord,$y);
+ if ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $result.=&Apache::edit::text_arg('X:','x',$token,4).
+ &Apache::edit::text_arg('Y:','y',$token,4).
+ '</td></tr><tr><td colspan="3">';
+ $result.=&Apache::edit::end_table;
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
+ 'x','y');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
+ }
+ return $result;
}
sub end_location {
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my @result;
+ if ($target eq 'edit') { @result=('','no') }
+ return @result;
}
# <label>$var_abc</label>
sub start_label {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[$#$parser]);
-
- push(@Apache::randomlabel::label_arr,$ltext);
- return '';
+ my $result='';
+ if ($target eq 'web' || $target eq 'tex') {
+ my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
+ push(@Apache::randomlabel::label_arr,$ltext);
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ my $text=&Apache::lonxml::get_all_text("/label",$$parser[-1]);
+ $result.='</td></tr><tr><td colspan="3">'.
+ &Apache::edit::editfield('',$text,'',20,1).
+ &Apache::edit::end_table();
+ } elsif ($target eq 'modified') {
+ my $text=$$parser[-1]->get_text("/label");
+ $result.=&Apache::edit::modifiedfield($token);
+ }
+ return $result;
}
sub end_label {
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my @result;
+ if ($target eq 'edit') { @result=('','no') }
+ return @result;
}