'.
&Apache::edit::editfield('',$text,'',20,1).
&Apache::edit::end_table();
} elsif ($target eq 'modified') {
# Why do I do this?
my $text=$$parser[-1]->get_text("/function");
$result.=&Apache::edit::modifiedfield($token);
}
return $result;
}
sub end_function {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
if ($target eq 'web') {
} elsif ($target eq 'edit') {
}
return $result;
}
##------------------------------------------------------------ curve data
sub start_data {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web') {
if (exists($curves[-1]->{'function'})) {
&Apache::lonxml::warning('Use of precludes use of .'.
'. The will be omitted in favor of '.
'the declaration.');
delete($curves[-1]->{'function'});
}
my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
$datatext =~ s/\s+/ /g;
# Need to do some error checking on the @data array -
# make sure it's all numbers and make sure each array
# is of the same length.
my @data;
if ($datatext =~ /,/) {
@data = split /,/,$datatext;
} else { # Assume it's space seperated.
@data = split / /,$datatext;
}
for (my $i=0;$i<=$#data;$i++) {
# Check that it's non-empty
if (! defined($data[$i])) {
&Apache::lonxml::warning(
'undefined value. Replacing with '.
' pi/e = 1.15572734979092');
$data[$i] = 1.15572734979092;
}
# Check that it's a number
if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
&Apache::lonxml::warning(
'Bad value of '.$data[$i].' Replacing with '.
' pi/e = 1.15572734979092');
$data[$i] = 1.15572734979092;
}
}
push @{$curves[-1]->{'data'}},\@data;
} elsif ($target eq 'edit') {
} elsif ($target eq 'modified') {
my $text=$$parser[-1]->get_text("/data");
$result.=&Apache::edit::modifiedfield($token);
}
return $result;
}
sub end_data {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
if ($target eq 'web') {
} elsif ($target eq 'edit') {
}
return $result;
}
##------------------------------------------------------------------- axis
sub start_axis {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web') {
&get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
$tagstack->[-1]);
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token);
$result .= &edit_attributes($target,$token,\%axis_defaults);
} elsif ($target eq 'modified') {
}
return $result;
}
sub end_axis {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
if ($target eq 'web') {
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_end($target,$token);
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys %axis_defaults);
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
$result.= &Apache::edit::handle_insert();
}
}
return $result;
}
###################################################################
## ##
## Utility Functions ##
## ##
###################################################################
##----------------------------------------------------------- set_defaults
sub set_defaults {
my ($var,$defaults) = @_;
my $key;
foreach $key (keys %$defaults) {
$var->{$key} = $defaults->{$key}->{'default'};
}
}
##------------------------------------------------------------------- misc
sub get_attributes{
my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
foreach my $attr (keys %{$defaults}) {
$values->{$attr} =
&Apache::lonxml::get_param($attr,$parstack,$safeeval);
if ($values->{$attr} eq '' | !defined($values->{$attr})) {
$values->{$attr} = $defaults->{$attr}->{'default'};
next;
}
my $test = $defaults->{$attr}->{'test'};
if (! &$test($values->{$attr})) {
&Apache::lonxml::warning
($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
.$defaults->{$attr}->{'default'} );
$values->{$attr} = $defaults->{$attr}->{'default'};
}
}
return ;
}
##------------------------------------------------------- write_gnuplot_file
sub write_gnuplot_file {
my $gnuplot_input = '';
my $curve;
# Collect all the colors
my @Colors;
push @Colors, $plot{'bgcolor'};
push @Colors, $plot{'fgcolor'};
push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
foreach $curve (@curves) {
push @Colors, ($curve->{'color'} ne '' ?
$curve->{'color'} :
$plot{'fgcolor'} );
}
# set term
$gnuplot_input .= 'set term gif ';
$gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
$gnuplot_input .= $plot{'font'} . ' ';
$gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
$gnuplot_input .= "@Colors\n";
# grid
$gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
# border
$gnuplot_input .= ($plot{'border'} eq 'on'?
'set border'.$/ :
'set noborder'.$/ ); # title, xlabel, ylabel
$gnuplot_input .= "set output\n";
$gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
$gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
$gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
if (defined(%axis)) {
$gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
$gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
}
# Key
if (defined(%key)) {
$gnuplot_input .= 'set key '.$key{'pos'}.' ';
if ($key{'title'} ne '') {
$gnuplot_input .= 'title "'.$key{'title'}.'" ';
}
$gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
} else {
$gnuplot_input .= 'set nokey'.$/;
}
# labels
my $label;
foreach $label (@labels) {
$gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
$label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
}
# curves
$gnuplot_input .= 'plot ';
my $datatext = '';
for (my $i = 0;$i<=$#curves;$i++) {
$curve = $curves[$i];
$gnuplot_input.= ', ' if ($i > 0);
if (exists($curve->{'function'})) {
$gnuplot_input.=
$curve->{'function'}.' title "'.
$curve->{'name'}.'" with '.
$curve->{'linestyle'};
} elsif (exists($curve->{'data'})) {
$gnuplot_input.= '\'-\' title "'.
$curve->{'name'}.'" with '.
$curve->{'linestyle'};
my @Data = @{$curve->{'data'}};
my @Data0 = @{$Data[0]};
for (my $i =0; $i<=$#Data0; $i++) {
my $dataset;
foreach $dataset (@Data) {
$datatext .= $dataset->[$i] . ' ';
}
$datatext .= $/;
}
$datatext .=$/;
}
}
$gnuplot_input .= $/.$datatext;
return $gnuplot_input;
}
#---------------------------------------------- check_inputs
sub check_inputs {
## Note: no inputs, no outputs - this acts only on global variables.
## Make sure we have all the input we need:
if (! defined(%plot )) { &set_defaults(\%plot,\%plot_defaults); }
if (! defined(%key )) {} # No key for this plot, thats okay
if (! defined(%axis )) { &set_defaults(\%axis,\%axis_defaults); }
if (! defined($title )) {} # No title for this plot, thats okay
if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
if ($#labels < 0) { } # No labels for this plot, thats okay
if ($#curves < 0) {
&Apache::lonxml::warning("No curves specified for plot!!!!");
return '';
}
my $curve;
foreach $curve (@curves) {
if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
&Apache::lonxml::warning("One of the curves specified did not contain any or declarations\n");
return '';
}
}
}
#------------------------------------------------ make_edit
sub edit_attributes {
my ($target,$token,$defaults) = @_;
my $result;
foreach my $attr (%$defaults) {
if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
$result .= &Apache::edit::text_arg(
$defaults->{$attr}->{'description'},
$attr,
$token);
} elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
$result .= &Apache::edit::select_arg(
$defaults->{$attr}->{'description'},
$attr,
$defaults->{$attr}->{'choices'},
$token);
}
}
return $result;
}
###################################################################
## ##
## Insertion functions for editing plots ##
## ##
###################################################################
#------------------------------------------------ insert_xxxxxxx
sub insert_plot {
my $result;
# plot attributes
$result .= '{'default'}.
"\"\n";
}
$result .= ">\n";
# Add the components
$result .= &insert_key();
$result .= &insert_axis();
$result .= &insert_label();
$result .= &insert_curve();
$result .= &insert_function();
$result .= "\n";
$result .= &insert_curve();
$result .= &insert_data();
$result .= "\n";
# close up the
$result .= "\n";
return $result;
}
sub insert_key {
my $result;
$result .= ' {'default'}.
"\"\n";
}
$result .= " />\n";
return $result;
}
sub insert_axis{
my $result;
$result .= ' {'default'}.
"\"\n";
}
$result .= " />\n";
return $result;
}
sub insert_label {
my $result;
$result .= ' \n";
return $result;
}
sub insert_curve {
my $result;
$result .= ' {'default'}."\"\n";
}
$result .= " >\n";
}
sub insert_function {
my $result;
$result .= "\n";
return $result;
}
sub insert_data {
my $result;
$result .= " \n";
$result .= " \n";
return $result;
}
##----------------------------------------------------------------------
1;
__END__
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