--- loncom/homework/drawimage.pm	2004/03/16 23:08:23	1.5
+++ loncom/homework/drawimage.pm	2024/04/09 20:01:31	1.14
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # programatic image drawing
 #
-# $Id: drawimage.pm,v 1.5 2004/03/16 23:08:23 albertel Exp $
+# $Id: drawimage.pm,v 1.14 2024/04/09 20:01:31 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -29,46 +29,100 @@
 package Apache::drawimage;
 use strict;
 use Apache::loncommon;
+use Apache::lonnet;
+use Apache::lonxml;
+use Apache::edit;
+use lib '/home/httpd/lib/perl/';
+use Time::HiRes qw(gettimeofday);
+use LONCAPA;
+ 
 
 my %args;
 my $cgi_id;
+my @cgi_ids;
 BEGIN {
     &Apache::lonxml::register('Apache::drawimage',('drawimage'));
 }
 
 sub start_drawimage {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
-    &Apache::lonxml::register('Apache::drawimage',('text','line','rectangle','arc','fill'));
+    &Apache::lonxml::register('Apache::drawimage',('text','line','rectangle','arc','fill','polygon','image'));
+    push(@Apache::lonxml::namespace,'drawimage');
+    my $result;
     if ($target eq 'web' || $target eq 'tex') {
-	$cgi_id=&Apache::loncommon::get_cgi_id();
-	%args=();
+	my $new_id=&Apache::loncommon::get_cgi_id();
+	if ($cgi_id) { push(@cgi_ids,$cgi_id); } else { undef(%args); }
+	$cgi_id=$new_id;
+    } elsif ($target eq 'edit') {
+        $result .= &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('Background color:','bgcolor' ,$token,8).
+            &Apache::edit::text_arg('Width(pixel):'    ,'width'   ,$token,6).
+            &Apache::edit::text_arg('Height(pixel):'   ,'height'  ,$token,6).
+            &Apache::edit::text_arg('TeXWidth(mm):'    ,'texwidth',$token,6).
+            &Apache::edit::end_row().&Apache::edit::start_spanning_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'bgcolor','width',
+                                                     'height','texwidth');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
     }
+    return $result;
 }
 
 sub end_drawimage {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
+    # need to call rand everytime start_script would evaluate, as the
+    # safe space rand number generator and the global rand generator
+    # are not separate
+    my $randnumber;
+    if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
+        $target eq 'answer') {
+        $randnumber=int(rand(1000));
+    }
     if ($target eq 'web' || $target eq 'tex') {
-	if ($target eq 'web') {
-	    my $width = 
-		&Apache::lonxml::get_param('width',$parstack,$safeeval);
-	    my $height =
-		&Apache::lonxml::get_param('height',$parstack,$safeeval);
-	    my $bgcolor =
-		&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
-	    if (!$width) { $width=300; }
-	    if (!$height) { $height=300; }
+	my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
+	my $height =&Apache::lonxml::get_param('height',$parstack,$safeeval);
+	my $bgcolor =&Apache::lonxml::get_param('bgcolor',$parstack,$safeeval);
+	if (!$width) { $width=300; }
+	if (!$height) { $height=300; }
+        $args{"cgi.$cgi_id.BGCOLOR"}=join(':',($bgcolor));
+        if ($target eq 'tex') {
+            my $texwidth=&Apache::lonxml::get_param('texwidth',$parstack,$safeeval,undef,1);
+            if (!$texwidth) { $texwidth='90'; }
+            $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height,$texwidth));
+            my $tmpdir = LONCAPA::tempdir(); # Where temporary files live:
+            ## Determine filename
+            my ($seconds, $microseconds) = gettimeofday;
+            my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
+                           '_'.$seconds.'_'.$microseconds.'_'.$$.$randnumber.'_drawimage.eps';
+            $args{"cgi.$cgi_id.EPSFILE"} = $env{'user.name'}.'_'.$env{'user.domain'}.
+                                           '_'.$seconds.'_'.$microseconds.'_'.$$.$randnumber.
+                                           '_drawimage.eps';
+            $result = "%DYNAMICIMAGE:$width:$height:$texwidth\n";
+            $result .= '\graphicspath{{'.$tmpdir.'}}'."\n";
+            $result .= '\includegraphics[width='.$texwidth.' mm]{'.$filename.'}';
+            &Apache::lonxml::register_ssi('/adm/randomlabel.png?token='.$cgi_id);
+        } else {
+	    $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height));
 	    $result.="<img width='$width' height='$height'
                            src='/adm/randomlabel.png?token=$cgi_id' />\n";
-	    $args{"cgi.$cgi_id.SIZE"}=join(':',($width,$height));
-	    $args{"cgi.$cgi_id.BGCOLOR"}=join(':',($bgcolor));
-	    &Apache::lonnet::appenv(%args);
-	} elsif ($target eq 'tex') {
-	    #FIXME generate image some how
-	    #probably Simple::PostScript
+        }
+	&Apache::lonnet::appenv(\%args);
+	if (@cgi_ids) {
+	    $cgi_id=pop(@cgi_ids);
+	} else {
+	    undef($cgi_id);
 	}
+    } elsif ($target eq 'edit') {
+        $result.=&Apache::edit::end_table;
     }
-    &Apache::lonxml::deregister('Apache::drawimage',('line','rectangle'));
+    pop(@Apache::lonxml::namespace);
+    &Apache::lonxml::deregister('Apache::drawimage',
+			        ('text','line','rectangle','arc','fill',
+			         'polygon'));
     return $result;
 }
 
@@ -76,26 +130,57 @@ sub start_text {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
     if ($target eq 'web' || $target eq 'tex') {
+	&Apache::lonxml::startredirection();
+    } elsif ($target eq 'edit') {
+        $result =
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x:','x',$token,6).
+            &Apache::edit::text_arg('y:','y',$token,6).
+            &Apache::edit::text_arg('font:','font',$token,12).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::select_arg('direction:','direction',
+                                      ['vertical','horizontal'],$token).
+            &Apache::edit::text_arg('rotation:','rotation',$token,6);
+        my $text=&Apache::lonxml::get_all_text('/text',$parser,$style);
+        $result .=
+            &Apache::edit::editfield($token->[1],$text,'Text',60,2).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x','y',
+                                                     'font','color',
+                                                     'direction','rotation');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        } else {
+            $result = $token->[4];
+        }
+        $result .= &Apache::edit::modifiedfield('/text',$parser);
+    }
+    return $result;
+}
+
+sub end_text {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    if ($target eq 'web' || $target eq 'tex') {
         my $x     = &Apache::lonxml::get_param('x',$parstack,$safeeval);
         my $y     = &Apache::lonxml::get_param('y',$parstack,$safeeval);
         my $font  = &Apache::lonxml::get_param('font',$parstack,$safeeval);
         my $color = &Apache::lonxml::get_param('color',$parstack,$safeeval);
         my $direction = &Apache::lonxml::get_param('direction',$parstack,$safeeval);
-	my $text  = &Apache::lonxml::get_all_text("/text",$parser);
-        $text = &Apache::lonnet::escape($text);
+        my $rotation = &Apache::lonxml::get_param('rotation',$parstack,$safeeval);
+	my $text  = &Apache::lonxml::endredirection();
+        $text = &escape($text);
         $args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:';
 	my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
-	$args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$text,$font,$color,$direction));
+	$args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$text,$font,$color,$direction,$rotation));
+    } elsif ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
     }
     return $result;
 }
 
-sub end_text {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
-    my $result;
-    return $result;
-}
-
 sub start_line {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
@@ -109,6 +194,23 @@ sub start_line {
 	my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
 	$args{"cgi.$cgi_id.OBJ$i"}=join(':',($x1,$y1,$x2,$y2,$color,$thickness));
 	$args{"cgi.$cgi_id.OBJTYPE"}.='LINE:';
+    } elsif ($target eq 'edit') {
+        $result .=
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x1:','x1' ,$token,6).
+            &Apache::edit::text_arg('y1:','y1' ,$token,6).
+            &Apache::edit::text_arg('x2:','x2' ,$token,6).
+            &Apache::edit::text_arg('y2:','y2' ,$token,6).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::text_arg('thickness:','thickness',$token,6).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x1','y1',
+                                                     'x2','y2','color','thickness');
+        if ($constructtag) { 
+            $result = &Apache::edit::rebuild_tag($token);
+        }
     }
     return $result;
 }
@@ -116,6 +218,9 @@ sub start_line {
 sub end_line {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
+    if ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
     return $result;
 }
 
@@ -136,6 +241,26 @@ sub start_rectangle {
 	$args{"cgi.$cgi_id.OBJ$i"}=
 	    join(':',($x1,$y1,$x2,$y2,$color,$thickness,$filled));
 	$args{"cgi.$cgi_id.OBJTYPE"}.='RECTANGLE:';
+    } elsif ($target eq 'edit') {
+        $result .=
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x1:','x1' ,$token,6).
+            &Apache::edit::text_arg('y1:','y1' ,$token,6).
+            &Apache::edit::text_arg('x2:','x2' ,$token,6).
+            &Apache::edit::text_arg('y2:','y2' ,$token,6).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::text_arg('thickness:','thickness',$token,6).
+            &Apache::edit::select_arg('filled:','filled',
+                                      ['no','yes'],$token).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x1','y1',
+                                                     'x2','y2','color','thickness',
+                                                     'filled');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
     }
     return $result;
 }
@@ -143,6 +268,9 @@ sub start_rectangle {
 sub end_rectangle {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
+    if ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
     return $result;
 }
 
@@ -164,6 +292,30 @@ sub start_arc {
 	    join(':',($x,$y,$width,$height,$start,$end,$color,$thickness,
 		      $filled));
 	$args{"cgi.$cgi_id.OBJTYPE"}.='ARC:';
+    } elsif ($target eq 'edit') {
+        $result .=
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x:','x',$token,6).
+            &Apache::edit::text_arg('y:','y',$token,6).
+            &Apache::edit::text_arg('width:','width',$token,6).
+            &Apache::edit::text_arg('height:','height',$token,6).
+            &Apache::edit::text_arg('start:','start',$token,6).
+            &Apache::edit::text_arg('end:','end',$token,6).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::text_arg('thickness:','thickness',$token,6).
+            &Apache::edit::select_arg('filled:','filled',
+                                      ['no','yes'],$token).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x','y',
+                                                     'width','height',
+                                                     'start','end',
+                                                     'color','thickness',
+                                                     'filled');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
     }
     return $result;
 }
@@ -171,6 +323,9 @@ sub start_arc {
 sub end_arc {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
+    if ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
     return $result;
 }
 
@@ -184,6 +339,20 @@ sub start_fill {
 	my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
 	$args{"cgi.$cgi_id.OBJ$i"}=join(':',($x,$y,$color));
 	$args{"cgi.$cgi_id.OBJTYPE"}.='FILL:';
+    } elsif ($target eq 'edit') {
+        $result .=
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x:','x' ,$token,6).
+            &Apache::edit::text_arg('y:','y' ,$token,6).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x','y',
+                                                     'color');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
     }
     return $result;
 }
@@ -191,9 +360,162 @@ sub start_fill {
 sub end_fill {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
+    if ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
+    return $result;
+}
+
+my @polygon;
+sub start_polygon {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    push(@Apache::lonxml::namespace,'polygon');
+    &Apache::lonxml::register('Apache::drawimage',('point'));
+    if ($target eq 'web' || $target eq 'tex') {
+	undef(@polygon);
+    } elsif ($target eq 'edit') {
+        $result = 
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('color:','color',$token,8).
+            &Apache::edit::select_arg('Open:','open',
+                                           ['no','yes'],$token).
+            &Apache::edit::select_arg('Filled:','filled',
+                                           ['no','yes'],$token).
+            &Apache::edit::text_arg('thickness:','thickness',$token,6).
+            &Apache::edit::end_row().
+            &Apache::edit::start_spanning_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'open','filled');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
+    }
+    return $result;
+}
+
+sub end_polygon {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;    
+    if ($target eq 'web' || $target eq 'tex') {
+	my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval);
+	my $filled=&Apache::lonxml::get_param('filled',$parstack,$safeeval);
+	my $open=&Apache::lonxml::get_param('open',$parstack,$safeeval);
+	my $thickness = &Apache::lonxml::get_param('thickness',$parstack,
+						   $safeeval);
+	my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
+	$args{"cgi.$cgi_id.OBJTYPE"}.='POLYGON:';
+	$args{"cgi.$cgi_id.OBJ$i"}=join(':',($color,$thickness,$open,$filled));
+	$args{"cgi.$cgi_id.OBJEXTRA$i"}=join('-',@polygon);
+    } elsif ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
+    pop(@Apache::lonxml::namespace);
+    &Apache::lonxml::deregister('Apache::drawimage',('point'));
+    return $result;
+}
+
+sub start_point {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    if ($target eq 'web' || $target eq 'tex') {
+	my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
+        my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
+	push (@polygon,"($x,$y)");
+    } elsif ($target eq 'edit') {
+        $result.= 
+            &Apache::edit::tag_start($target,$token).
+            &Apache::edit::text_arg('x:','x' ,$token,6).
+            &Apache::edit::text_arg('y:','y' ,$token,6).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x','y');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        }
+    }
+    return $result;
+}
+
+sub end_point {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    if ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
     return $result;
 }
 
+sub start_image {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    if ($target eq 'web' || $target eq 'tex') {
+	&Apache::lonxml::startredirection();
+    } elsif ($target eq 'edit') {
+        my $bgimg=&Apache::lonxml::get_all_text('/image',$parser,$style);
+        $Apache::edit::bgimgsrc=$bgimg;
+        $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
+        my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
+        $result=&Apache::edit::tag_start($target,$token,'Background Image').
+            &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40).
+            &Apache::edit::browse_or_search(undef,'textnode',undef,$only,undef,1).
+            '<br />'.
+            &Apache::edit::text_arg('x:','x',$token,6).
+            &Apache::edit::text_arg('y:','y',$token,6).
+            &Apache::edit::text_arg('clipx:','clipx',$token,6).
+            &Apache::edit::text_arg('clipy:','clipy',$token,6).
+            &Apache::edit::text_arg('Clip width(pixel):','clipwidth',$token,6).
+            &Apache::edit::text_arg('Clip height(pixel):','clipheight',$token,6).
+            &Apache::edit::text_arg('Scaled width:','scaledwidth',$token,6).
+            &Apache::edit::text_arg('Scaled height:','scaledheight',$token,6).
+            &Apache::edit::text_arg('Transparent:','transparent',$token,6).
+            &Apache::edit::end_row();
+    } elsif ($target eq 'modified') {
+        my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                     $safeeval,'x','y',
+                                                     'clipx','clipy','clipwidth','clipheight',
+                                                     'scaledwidth','scaledheight','transparent');
+        if ($constructtag) {
+            $result = &Apache::edit::rebuild_tag($token);
+        } else {
+            $result = $token->[4];
+        }
+        $result .= &Apache::edit::modifiedfield('/image',$parser);
+    }
+    return $result;
+}
 
+sub end_image {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    my $result;
+    if ($target eq 'web' || $target eq 'tex') {
+	my $bgimg=&Apache::lonxml::endredirection();
+	my $x = &Apache::lonxml::get_param('x',$parstack,$safeeval);
+        my $y = &Apache::lonxml::get_param('y',$parstack,$safeeval);
+	my $clipx = &Apache::lonxml::get_param('clipx',$parstack,$safeeval);
+        my $clipy = &Apache::lonxml::get_param('clipy',$parstack,$safeeval);
+	my $clipwidth = 
+	    &Apache::lonxml::get_param('clipwidth',$parstack,$safeeval);
+        my $clipheight = 
+	    &Apache::lonxml::get_param('clipheight',$parstack,$safeeval);
+	my $scaledwidth = 
+	    &Apache::lonxml::get_param('scaledwidth',$parstack,$safeeval);
+        my $scaledheight = 
+	    &Apache::lonxml::get_param('scaledheight',$parstack,$safeeval);
+	my $transparent = 
+	    &Apache::lonxml::get_param('transparent',$parstack,$safeeval);
+	$bgimg=&Apache::imageresponse::clean_up_image($bgimg);
+	my $i=$args{"cgi.$cgi_id.OBJCOUNT"}++;
+	$args{"cgi.$cgi_id.OBJTYPE"}.='IMAGE:';
+	$args{"cgi.$cgi_id.OBJ$i"} = 
+	    join(':',($x,$y,&escape($bgimg),$transparent,
+		      $clipx,$clipy,$scaledwidth,$scaledheight,$clipwidth,$clipheight));
+    } elsif ($target eq 'edit') {
+        $result=&Apache::edit::end_table();
+    }
+    return $result;
+}
 1;
 __END__