--- loncom/xml/lonplot.pm 2001/12/18 15:33:47 1.2
+++ loncom/xml/lonplot.pm 2009/11/14 19:13:36 1.152
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Dynamic plot
#
-# $Id: lonplot.pm,v 1.2 2001/12/18 15:33:47 matthew Exp $
+# $Id: lonplot.pm,v 1.152 2009/11/14 19:13:36 faziophi Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -25,191 +25,1306 @@
#
# http://www.lon-capa.org/
#
-# 2/21 Guy
+
+
+
+
package Apache::lonplot;
+
use strict;
+use warnings FATAL=>'all';
+no warnings 'uninitialized';
+use Apache::File;
use Apache::response;
use Apache::lonxml;
-use Digest::MD5 qw(md5 md5_hex md5_base64);
+use Apache::edit;
+use Apache::lonnet;
+use LONCAPA;
+
+
+use vars qw/$weboutputformat $version/;
+
-sub BEGIN {
- &Apache::lonxml::register('Apache::lonplot',('plot'));
+
+BEGIN {
+ &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
+ #
+ # Determine the version of GNUPLOT
+ $weboutputformat = 'gif';
+ my $versionstring = `gnuplot --version 2>/dev/null`;
+ ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
+ if ($version >= 4) {
+ $weboutputformat = 'png';
+ }
+
}
+=pod
+
+##
+## Description of data structures:
##
-## Tests used in checking the validitity of input
+## %plot %key %axis
+## --------------------------
+## height title color
+## width box xmin
+## bgcolor pos xmax
+## fgcolor ymin
+## transparent ymax
+## grid
+## border
+## font
+## align
##
-my $int_test = sub {$_[0]=~/^\d+$/};
-my $real_test = sub {$_[0]=~/^[+-]?\d*\.?\d*$/};
-my $color_test = sub {$_[0]=~/^x[\da-f]{6}$/};
-my $onoff_test = sub {$_[0]=~/^(on|off)$/};
-my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below)+$/};
-my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
-my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/};
-
+## @labels: $labels[$i] = \%label
+## %label: text, xpos, ypos, justify
##
-## Default values for attributes of elements
+## @curves: $curves[$i] = \%curve
+## %curve: name, linestyle, ( function | data )
##
-my %plot_defaults =
+## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
+## [y1,y2,y3,y4] ]
+##
+
+###################################################################
+## ##
+## Tests used in checking the validitity of input ##
+## ##
+###################################################################
+
+=cut
+
+my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
+ # is longer than this, it will be truncated.
+
+my %linetypes =
+ (
+ solid => 1,
+ dashed => 0
+ );
+
+my %linestyles =
+ (
+ lines => 2, # Maybe this will be used in the future
+ linespoints => 2, # to check on whether or not they have
+ dots => 2, # supplied enough <data></data> fields
+ points => 2, # to use the given line style. But for
+ steps => 2, # now there are more important things
+ fsteps => 2, # for me to deal with.
+ histeps => 2,
+ errorbars => 3,
+ xerrorbars => [3,4],
+ yerrorbars => [3,4],
+ xyerrorbars => [4,6],
+ boxes => 3,
+ filledcurves => 2,
+ vector => 4
+ );
+
+my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
+my $real_test =
+ sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
+my $pos_real_test =
+ sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
+my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
+my $onoff_test = sub {$_[0]=~/^(on|off)$/};
+my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
+my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
+my $linestyle_test = sub {exists($linestyles{$_[0]})};
+my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
+
+###################################################################
+## ##
+## Attribute metadata ##
+## ##
+###################################################################
+my @gnuplot_edit_order =
+ qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
+ transparent grid samples
+ border align plotcolor plottype gridtype lmargin rmargin
+ tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
+ pattern solid/;
+
+my $margin_choices = ['default',0..20];
+
+my %gnuplot_defaults =
(
- height => {default => 200, test => $int_test },
- width => {default => 200, test => $int_test },
- bgcolor => {default => "xffffff", test => $color_test},
- fgcolor => {default => "x000000", test => $color_test},
- transparent => {default => "off", test => $onoff_test},
- grid => {default => "off", test => $onoff_test},
- border => {default => "on" , test => $onoff_test},
- font => {default => "medium", test => $sml_test }
+ alttag => {
+ default => 'dynamically generated plot',
+ test => $words_test,
+ description => 'Brief description of the plot',
+ edit_type => 'entry',
+ size => '40'
+ },
+ height => {
+ default => 300,
+ test => $int_test,
+ description => 'Height of image (pixels)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ width => {
+ default => 400,
+ test => $int_test,
+ description => 'Width of image (pixels)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ bgcolor => {
+ default => 'xffffff',
+ test => $color_test,
+ description => 'Background color of image (xffffff)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ fgcolor => {
+ default => 'x000000',
+ test => $color_test,
+ description => 'Foreground color of image (x000000)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ transparent => {
+ default => 'off',
+ test => $onoff_test,
+ description => 'Transparent image',
+ edit_type => 'onoff'
+ },
+ grid => {
+ default => 'on',
+ test => $onoff_test,
+ description => 'Display grid',
+ edit_type => 'onoff'
+ },
+ gridlayer => {
+ default => 'off',
+ test => $onoff_test,
+ description => 'Display grid front layer over filled boxes or filled curves',
+ edit_type => 'onoff'
+ },
+ box_border => {
+ default => 'noborder',
+ test => sub {$_[0]=~/^(noborder|border)$/},
+ description => 'Draw border for boxes',
+ edit_type => 'choice',
+ choices => ['border','noborder']
+ },
+ border => {
+ default => 'on',
+ test => $onoff_test,
+ description => 'Draw border around plot',
+ edit_type => 'onoff'
+ },
+ font => {
+ default => '9',
+ test => $sml_test,
+ description => 'Font size to use in web output (pts)',
+ edit_type => 'choice',
+ choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
+ },
+ fontface => {
+ default => 'sans-serif',
+ test => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
+ description => 'Type of font to use',
+ edit_type => 'choice',
+ choices => ['sans-serif','serif', 'classic']
+ },
+ samples => {
+ default => '100',
+ test => $int_test,
+ description => 'Number of samples for non-data plots',
+ edit_type => 'choice',
+ choices => ['100','200','500','1000','2000','5000']
+ },
+ align => {
+ default => 'middle',
+ test => sub {$_[0]=~/^(left|right|middle|center)$/},
+ description => 'Alignment for image in HTML',
+ edit_type => 'choice',
+ choices => ['left','right','middle']
+ },
+ texwidth => {
+ default => '93',
+ test => $int_test,
+ description => 'Width of plot when printed (mm)',
+ edit_type => 'entry',
+ size => '5'
+ },
+ texfont => {
+ default => '22',
+ test => $int_test,
+ description => 'Font size to use in TeX output (pts):',
+ edit_type => 'choice',
+ choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
+ },
+ plotcolor => {
+ default => 'monochrome',
+ test => sub {$_[0]=~/^(monochrome|color|colour)$/},
+ description => 'Color setting for printing:',
+ edit_type => 'choice',
+ choices => [qw/monochrome color colour/],
+ },
+ pattern => {
+ default => '',
+ test => $int_test,
+ description => 'Pattern value for boxes:',
+ edit_type => 'choice',
+ choices => [0,1,2,3,4,5,6]
+ },
+ solid => {
+ default => 0,
+ test => $real_test,
+ description => 'The density of fill style for boxes',
+ edit_type => 'entry',
+ size => '5'
+ },
+ fillstyle => {
+ default => 'empty',
+ test => sub {$_[0]=~/^(empty|solid|pattern)$/},
+ description => 'Filled style for boxes:',
+ edit_type => 'choice',
+ choices => ['empty','solid','pattern']
+ },
+ plottype => {
+ default => 'Cartesian',
+ test => sub {$_[0]=~/^(Polar|Cartesian)$/},
+ description => 'Plot type:',
+ edit_type => 'choice',
+ choices => ['Cartesian','Polar']
+ },
+ gridtype => {
+ default => 'Cartesian',
+ test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
+ description => 'Grid type:',
+ edit_type => 'choice',
+ choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
+ },
+ lmargin => {
+ default => 'default',
+ test => sub {$_[0]=~/^(default|\d+)$/},
+ description => 'Left margin width (pts):',
+ edit_type => 'choice',
+ choices => $margin_choices,
+ },
+ rmargin => {
+ default => 'default',
+ test => sub {$_[0]=~/^(default|\d+)$/},
+ description => 'Right margin width (pts):',
+ edit_type => 'choice',
+ choices => $margin_choices,
+ },
+ tmargin => {
+ default => 'default',
+ test => sub {$_[0]=~/^(default|\d+)$/},
+ description => 'Top margin width (pts):',
+ edit_type => 'choice',
+ choices => $margin_choices,
+ },
+ bmargin => {
+ default => 'default',
+ test => sub {$_[0]=~/^(default|\d+)$/},
+ description => 'Bottom margin width (pts):',
+ edit_type => 'choice',
+ choices => $margin_choices,
+ },
+ boxwidth => {
+ default => '',
+ test => $real_test,
+ description => 'Width of boxes, default is auto',
+ edit_type => 'entry',
+ size => '5'
+ },
+ major_ticscale => {
+ default => '1',
+ test => $real_test,
+ description => 'Size of major tic marks (plot coordinates)',
+ edit_type => 'entry',
+ size => '5'
+ },
+ minor_ticscale => {
+ default => '0.5',
+ test => $real_test,
+ description => 'Size of minor tic mark (plot coordinates)',
+ edit_type => 'entry',
+ size => '5'
+ },
);
my %key_defaults =
(
- title => { default => "on" , test => $onoff_test },
- box => { default => "off" , test => $onoff_test },
- pos => { default => "top right" , test => $key_pos_test}
+ title => {
+ default => '',
+ test => $words_test,
+ description => 'Title of key',
+ edit_type => 'entry',
+ size => '40'
+ },
+ box => {
+ default => 'off',
+ test => $onoff_test,
+ description => 'Draw a box around the key?',
+ edit_type => 'onoff'
+ },
+ pos => {
+ default => 'top right',
+ test => $key_pos_test,
+ description => 'Position of the key on the plot',
+ edit_type => 'choice',
+ choices => ['top left','top right','bottom left','bottom right',
+ 'outside','below']
+ }
);
my %label_defaults =
(
- xpos => {default => 0, test => $real_test },
- ypos => {default => 0, test => $real_test },
- color => {default => "x000000", test => $color_test },
- justify => {default => "left",
- test => sub {$_[0]=~/^(left|right|center)$/}}
+ xpos => {
+ default => 0,
+ test => $real_test,
+ description => 'X position of label (graph coordinates)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ ypos => {
+ default => 0,
+ test => $real_test,
+ description => 'Y position of label (graph coordinates)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ justify => {
+ default => 'left',
+ test => sub {$_[0]=~/^(left|right|center)$/},
+ description => 'justification of the label text on the plot',
+ edit_type => 'choice',
+ choices => ['left','right','center']
+ },
+ rotate => {
+ default => 0,
+ test => $real_test,
+ description => 'Rotation of label (degrees)',
+ edit_type => 'entry',
+ size => '10',
+ }
);
+my @tic_edit_order = ('location','mirror','start','increment','end',
+ 'minorfreq');
+my %tic_defaults =
+ (
+ location => {
+ default => 'border',
+ test => sub {$_[0]=~/^(border|axis)$/},
+ description => 'Location of major tic marks',
+ edit_type => 'choice',
+ choices => ['border','axis']
+ },
+ mirror => {
+ default => 'on',
+ test => $onoff_test,
+ description => 'Mirror tics on opposite axis?',
+ edit_type => 'onoff'
+ },
+ start => {
+ default => '-10.0',
+ test => $real_test,
+ description => 'Start major tics at',
+ edit_type => 'entry',
+ size => '10'
+ },
+ increment => {
+ default => '1.0',
+ test => $real_test,
+ description => 'Place a major tic every',
+ edit_type => 'entry',
+ size => '10'
+ },
+ end => {
+ default => ' 10.0',
+ test => $real_test,
+ description => 'Stop major tics at ',
+ edit_type => 'entry',
+ size => '10'
+ },
+ minorfreq => {
+ default => '0',
+ test => $int_test,
+ description => 'Number of minor tics per major tic mark',
+ edit_type => 'entry',
+ size => '10'
+ },
+ );
+
+my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');
my %axis_defaults =
(
- color => {default => "x000000", test => $color_test},
- thickness => {default => 1, test => $int_test },
- xmin => {default => -10.0, test => $real_test },
- xmax => {default => 10.0, test => $real_test },
- ymin => {default => -10.0, test => $real_test },
- ymax => {default => 10.0, test => $real_test }
+ color => {
+ default => 'x000000',
+ test => $color_test,
+ description => 'Color of grid lines (x000000)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ xmin => {
+ default => '-10.0',
+ test => $real_test,
+ description => 'Minimum x-value shown in plot',
+ edit_type => 'entry',
+ size => '10'
+ },
+ xmax => {
+ default => ' 10.0',
+ test => $real_test,
+ description => 'Maximum x-value shown in plot',
+ edit_type => 'entry',
+ size => '10'
+ },
+ ymin => {
+ default => '-10.0',
+ test => $real_test,
+ description => 'Minimum y-value shown in plot',
+ edit_type => 'entry',
+ size => '10'
+ },
+ ymax => {
+ default => ' 10.0',
+ test => $real_test,
+ description => 'Maximum y-value shown in plot',
+ edit_type => 'entry',
+ size => '10'
+ },
+ xformat => {
+ default => 'on',
+ test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
+ description => 'X-axis number formatting',
+ edit_type => 'choice',
+ choices => ['on', 'off', '2e', '2f'],
+ },
+ yformat => {
+ default => 'on',
+ test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
+ description => 'Y-axis number formatting',
+ edit_type => 'choice',
+ choices => ['on', 'off', '2e', '2f'],
+ },
+
+ xzero => {
+ default => 'off',
+ test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
+ description => 'Show x-zero (y=0) axis',
+ edit_type => 'choice',
+ choices => ['off', 'line', 'thick-line', 'dotted'],
+ },
+
+ yzero => {
+ default => 'off',
+ test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
+ description => 'Show y-zero (x=0) axis',
+ edit_type => 'choice',
+ choices => ['off', 'line', 'thick-line', 'dotted'],
+ },
);
+my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
+
my %curve_defaults =
(
- color => {default => "x000000", test => $color_test },
- name => {default => "x000000", test => sub {$_[0]=~/^[\w ]*$/} },
- linestyle => {default => "lines", test => $linestyle_test }
+ color => {
+ default => 'x000000',
+ test => $color_test,
+ description => 'Color of curve (x000000)',
+ edit_type => 'entry',
+ size => '10'
+ },
+ name => {
+ default => '',
+ test => $words_test,
+ description => 'Name of curve to appear in key',
+ edit_type => 'entry',
+ size => '20'
+ },
+ linestyle => {
+ default => 'lines',
+ test => $linestyle_test,
+ description => 'Plot with:',
+ edit_type => 'choice',
+ choices => [keys(%linestyles)]
+ },
+ linewidth => {
+ default => 1,
+ test => $int_test,
+ description => 'Line width (may not apply to all plot styles)',
+ edit_type => 'choice',
+ choices => [1,2,3,4,5,6,7,8,9,10]
+ },
+ linetype => {
+ default => 'solid',
+ test => sub {$_[0]=~/^(solid|dashed)$/},
+ description => 'Line type (may not apply to all plot styles)',
+ edit_type => 'choice',
+ choices => ['solid', 'dashed']
+ },
+ pointsize => {
+ default => 1,
+ test => $pos_real_test,
+ description => 'Point size (may not apply to all plot styles)',
+ edit_type => 'entry',
+ size => '5'
+ },
+ pointtype => {
+ default => 1,
+ test => $int_test,
+ description => 'Point type (may not apply to all plot styles)',
+ edit_type => 'choice',
+ choices => [0,1,2,3,4,5,6]
+ },
+ limit => {
+ default => 'closed',
+ test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
+ description => 'Point to fill -- for filledcurves',
+ edit_type => 'choice',
+ choices => ['above', 'below', 'closed','x1','x2','y1','y2']
+ },
);
-##
-## End of defaults
-##
-my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves);
+###################################################################
+## ##
+## parsing and edit rendering ##
+## ##
+###################################################################
+
+undef %Apache::lonplot::plot;
+my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
+
+sub start_gnuplot {
+ undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
+ undef($title); undef($xlabel); undef($ylabel);
+ undef(@labels); undef(@curves);
+ undef(%xtics); undef(%ytics);
+ #
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ &Apache::lonxml::register('Apache::lonplot',
+ ('title','xlabel','ylabel','key','axis','label','curve',
+ 'xtics','ytics'));
+ push (@Apache::lonxml::namespace,'lonplot');
+ if ($target eq 'web' || $target eq 'tex') {
+ &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
+ $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
+ \@gnuplot_edit_order)
+ .&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
+ return $result;
+}
+
+sub end_gnuplot {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ pop @Apache::lonxml::namespace;
+ &Apache::lonxml::deregister('Apache::lonplot',
+ ('title','xlabel','ylabel','key','axis','label','curve'));
+ my $result = '';
+ my $randnumber;
+ # need to call rand everytime start_script would evaluate, as the
+ # safe space rand number generator and the global rand generator
+ # are not separate
+ if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
+ $target eq 'answer') {
+ $randnumber=int(rand(1000));
+ }
+ if ($target eq 'web' || $target eq 'tex') {
+ &check_inputs(); # Make sure we have all the data we need
+ ##
+ ## Determine filename
+ my $tmpdir = '/home/httpd/perl/tmp/';
+ my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
+ '_'.time.'_'.$$.$randnumber.'_plot';
+ ## Write the plot description to the file
+ &write_gnuplot_file($tmpdir,$filename,$target);
+ $filename = &escape($filename);
+ ## return image tag for the plot
+ if ($target eq 'web') {
+ $result .= <<"ENDIMAGE";
+<img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
+ width = "$Apache::lonplot::plot{'width'}"
+ height = "$Apache::lonplot::plot{'height'}"
+ align = "$Apache::lonplot::plot{'align'}"
+ alt = "$Apache::lonplot::plot{'alttag'}" />
+ENDIMAGE
+ } elsif ($target eq 'tex') {
+ &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
+ &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
+ #might be inside the safe space, register the URL for later
+ &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
+ $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
+ $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
+ $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
+ }
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
+ return $result;
+}
-sub start_plot {
- %plot = ''; %key=''; %axis='';
- $title=''; $xlabel=''; $ylabel='';
- @labels = ''; @curves='';
+##--------------------------------------------------------------- xtics
+sub start_xtics {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- &Apache::lonxml::register('Apache::plot',
- ('title','xlabel','ylabel','key','axis','label','curve'));
- push (@Apache::lonxml::namespace,'plot');
- ##-------------------------------------------------------
- ## How do I do this? I need to "eval" and I need to keep the info
- ## available for the parser.
- ##
- my $inside = &Apache::lonxml::get_all_text("/plot",$$parser[-1]);
- my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
- if ($eval eq 'on') {
- $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
- #&Apache::lonxml::debug("M is evaulated to:$inside:");
- }
- ##-------------------------------------------------------
- &get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval,'plot');
- return '';
+ if ($target eq 'web' || $target eq 'tex') {
+ &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'xtics');
+ $result .= &edit_attributes($target,$token,\%tic_defaults,
+ \@tic_edit_order);
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%tic_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
+ return $result;
}
-sub end_plot {
+sub end_xtics {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- pop @Apache::lonxml::namespace;
- my $result;
- ## Determine filename
- my $tmpdir = '/home/httpd/perl/tmp/';
- my $filename = $tmpdir.$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
- '_plot.data';
- my $usersees=md5_base64($filename.'_'.$ENV{'REMOTE_ADDR'});
-
- ## Write the plot description to the file
- my $fh=&Apache::File->new('/home/httpd/perl/tmp/'.$realname);
- ## Ack!
- ## return image tag for the plot
- $result = '<img src=\"/cgi-bin/plot.cgi?'.$usersees.'"';
+ my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
+ return $result;
+}
+
+##--------------------------------------------------------------- ytics
+sub start_ytics {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result='';
+ if ($target eq 'web' || $target eq 'tex') {
+ &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'ytics');
+ $result .= &edit_attributes($target,$token,\%tic_defaults,
+ \@tic_edit_order);
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%tic_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
return $result;
}
+sub end_ytics {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
+ return $result;
+}
+
+##-----------------------------------------------------------------font
+my %font_properties =
+ (
+ 'classic' => {
+ face => 'classic',
+ file => 'DejaVuSansMono-Bold',
+ printname => 'Helvetica',
+ tex_no_file => 1,
+ },
+ 'sans-serif' => {
+ face => 'sans-serif',
+ file => 'DejaVuSans',
+ printname => 'DejaVuSans',
+ },
+ 'serif' => {
+ face => 'serif',
+ file => 'DejaVuSerif',
+ printname => 'DejaVuSerif',
+ },
+ );
+
+sub get_font {
+ my ($target) = @_;
+ my ($size, $selected_font);
+
+ if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
+ $selected_font = $font_properties{'classic'};
+ if ( $Apache::lonplot::plot{'font'} eq 'small') {
+ $size = '5';
+ } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
+ $size = '9';
+ } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
+ $size = '11';
+ } else {
+ $size = '9';
+ }
+ } else {
+ $size = $Apache::lonplot::plot{'font'};
+ $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
+ }
+ if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
+# $selected_font = $font_properties{'classic'};
+ $size = $Apache::lonplot::plot{'texfont'};
+ }
+ return ($size, $selected_font);
+}
+
##----------------------------------------------------------------- key
sub start_key {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,'key');
+ if ($target eq 'web' || $target eq 'tex') {
+ &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
+ $result .= &edit_attributes($target,$token,\%key_defaults);
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%key_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
return $result;
}
sub end_key {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
+
+sub parse_label {
+ my ($target,$text) = @_;
+ my $parser=HTML::LCParser->new(\$text);
+ my $result;
+ while (my $token=$parser->get_token) {
+ if ($token->[0] eq 'S') {
+ if ($token->[1] eq 'sub') {
+ $result .= '_{';
+ } elsif ($token->[1] eq 'sup') {
+ $result .= '^{';
+ } else {
+ $result .= $token->[4];
+ }
+ } elsif ($token->[0] eq 'E') {
+ if ($token->[1] eq 'sub'
+ || $token->[1] eq 'sup') {
+ $result .= '}';
+ } else {
+ $result .= $token->[2];
+ }
+ } elsif ($token->[0] eq 'T') {
+ $result .= &replace_entities($target,$token->[1]);
+ }
+ }
+ return $result;
+}
+
+#
+# Note that there are severe restrictions on font selection in the
+# ps driver now. later in life Gnuplot is supposed to support
+# utf-8 fonts in the posts script driver. When this happens,
+# the tex entries with comments that include the word <FIX>
+# should be changed to print the correct glyphs rather than some
+# approximation or fallback of what is intended.
+
+my %lookup =
+ ( # Greek alphabet:
+
+ '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
+ '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
+ '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
+ '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
+ '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
+ '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
+ '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
+ '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
+ '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
+ '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
+ '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
+ '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
+ '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
+ '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
+ '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
+ '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
+ '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
+ '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
+ '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
+ '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
+ '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
+ '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
+ '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
+ '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
+ '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
+ '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
+ '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
+ '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
+ '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
+ '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
+ '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
+ '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
+ '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
+ '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
+ '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
+ '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
+ '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
+ '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
+ '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
+ '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
+ '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
+ '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
+ '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
+ '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
+ '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
+ '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
+ '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
+ '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
+ '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
+ '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
+ '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
+
+
+ # Punctuation:
+
+ '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
+ '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
+ '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
+ '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
+ '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
+ '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
+ '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
+ '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
+ '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
+ '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
+ '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX>
+ '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX>
+ '#139' => {'tex' => '<', 'web' => '<'},
+ '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX>
+ '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
+ '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
+ '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX>
+ '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX>
+ '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
+ '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash
+ '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
+ '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'},
+ '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark
+
+ # Accented letters, and other furreign language glyphs.
+
+ '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
+ '#155' => {'tex' => '>', 'web' => '\76'}, # >
+ '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX>
+ '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX>
+ '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
+ '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
+ '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
+ '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
+ '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX>
+ '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
+ '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
+ '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
+ '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
+ '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
+ '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
+ '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
+ '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
+ '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen.
+ '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
+ '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
+ '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..`
+ '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
+ '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
+ '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
+ '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent.
+ '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
+ '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
+ '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot
+ '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
+ '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
+ '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal.
+ '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
+ '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
+ '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
+ '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
+ '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
+ '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
+ '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
+ '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
+ '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
+ '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
+ '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
+ '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
+ '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla
+ '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave.
+ '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent.
+ '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex.
+ '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut.
+ '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent.
+ '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent.
+ '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex.
+ '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut.
+ '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth.
+ '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan).
+ '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave.
+ '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute.
+ '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex.
+ '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde.
+ '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut.
+ '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol.
+ '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash.
+ '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave.
+ '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute.
+ '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex.
+ '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut.
+ '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute.
+ '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn.
+ '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s.
+ '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave.
+ '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave.
+ '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex.
+ '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde.
+ '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut
+ '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top.
+ '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature.
+ '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla
+ '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave.
+ '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute.
+ '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex.
+ '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut.
+ '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave.
+ '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute.
+ '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex.
+ '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut.
+ '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth.
+ '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde.
+ '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave.
+ '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute.
+ '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex.
+ '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde.
+ '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut.
+ '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol
+ '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed.
+ '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave.
+ '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute.
+ '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex.
+ '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut.
+ '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent.
+ '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic).
+ '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut.
+
+ # Latin extended A entities:
+
+ '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature.
+ '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.
+ '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable.
+ '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable.
+ '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable.
+
+ # Latin extended B.
+
+ '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook.
+
+ # Standalone accents:
+
+ '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex.
+ '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde.
+
+ # General punctuation. We're not able to make a distinction between
+ # the various length spacings in the print version. (e.g. en/em/thin).
+ # the various joiners will be empty strings in the print version too.
+
+
+ '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space.
+ '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space.
+ '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space.
+ '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner.
+ '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner.
+ '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark
+ '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark.
+ '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash.
+ '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash.
+ '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote.
+ '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote.
+ '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote.
+ '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote.
+ '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote.
+ '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote.
+ '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
+ '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
+ '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet.
+ '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses.
+ '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille.
+ '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime.
+ '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime.
+ '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote.
+ '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote.
+ '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline.
+ '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash.
+ '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
+
+ # Letter like symbols.
+
+ '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol
+ '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part
+ '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part.
+ '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol.
+ '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef.
+
+ # Arrows of various types and directions.
+ '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <--
+ '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow.
+ '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # -->
+ '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow.
+ '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <-->
+ '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right.
+ '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <==
+ '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow.
+ '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==>
+ '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow.
+ '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==>
+
+ # Mathematical operators. For some of these we do the best we can in printing.
+
+ '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all.
+ '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative
+ '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists.
+ '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set.
+ '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g.
+ '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set.
+ '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of
+ '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member
+ '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product
+ '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of.
+ '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign.
+ '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # *
+ '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root.
+ '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to.
+ '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity.
+ '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle .
+ '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and.
+ '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or.
+ '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection.
+ '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union.
+ '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral.
+
+ # Some gnuplot guru will have to explain to me why the next three
+ # require the extra slashes... else they print very funkily.
+
+ '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots.
+ '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to.
+ '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with.
+
+ '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to.
+ '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to.
+ '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to.
+ '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to.
+ '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to
+ '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of.
+ '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of.
+ '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of.
+ '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal.
+ '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal
+ '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside
+ '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times.
+ '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular.
+ '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator.
+
+ # Misc. technical symbols:
+
+ '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling.
+ '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling.
+ '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor.
+ '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor.
+
+ # The gnuplot png font evidently does not have the big angle brackets at
+ # positions 0x2329, 0x232a so use ordinary brackets.
+
+ '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket.
+ '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket.
+
+ # Gemoetric shapes.
+
+ '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge.
+
+ # Misc. symbols
+
+ '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"},
+ '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"},
+ '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"},
+ '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"}
+
+ );
+
+
+sub replace_entities {
+ my ($target,$text) = @_;
+ $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
+ while (my ($re, $replace) = each(%lookup)) {
+ my $repl = $replace->{$target};
+ $text =~ s/&$re;/$replace->{$target}/g;
+ }
+ $text =~ s{(&)}{\\\\$1}g;
+ return $text;
+}
+
##------------------------------------------------------------------- title
sub start_title {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
my $result='';
+ if ($target eq 'web' || $target eq 'tex') {
+ $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
+ $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
+ $title =~ s/\n/ /g;
+ if (length($title) > $max_str_len) {
+ $title = substr($title,0,$max_str_len);
+ }
+ $title = &parse_label($target,$title);
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
+ my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
+ $result.=&Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/title",$parser);
+ }
return $result;
}
sub end_title {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
##------------------------------------------------------------------- xlabel
sub start_xlabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
+ if ($target eq 'web' || $target eq 'tex') {
+ $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
+ $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
+ $xlabel =~ s/\n/ /g;
+ if (length($xlabel) > $max_str_len) {
+ $xlabel = substr($xlabel,0,$max_str_len);
+ }
+ $xlabel = &parse_label($target,$xlabel);
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
+ my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
+ $result.=&Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
+ }
return $result;
}
sub end_xlabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
+
##------------------------------------------------------------------- ylabel
sub start_ylabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
+ if ($target eq 'web' || $target eq 'tex') {
+ $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
+ $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
+ $ylabel =~ s/\n/ /g;
+ if (length($ylabel) > $max_str_len) {
+ $ylabel = substr($ylabel,0,$max_str_len);
+ }
+ $ylabel = &parse_label($target,$ylabel);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
+ my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
+ $result .= &Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
+ }
return $result;
}
sub end_ylabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
+
##------------------------------------------------------------------- label
sub start_label {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- my $label = &newhashref();
- &get_attributes($label,\%label_defaults,$parstack,$safeeval,'label');
- $label->{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
- push(@labels,$label);
+ if ($target eq 'web' || $target eq 'tex') {
+ my %label;
+ &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
+ $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
+ $text =~ s/\n/ /g;
+ $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
+ $label{'text'} = &parse_label($target,$text);
+ push(@labels,\%label);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
+ $result .= &edit_attributes($target,$token,\%label_defaults);
+ my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
+ $result .= &Apache::edit::end_row().
+ &Apache::edit::start_spanning_row().
+ &Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ &Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%label_defaults));
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/label",$parser);
+ }
return $result;
}
sub end_label {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
@@ -217,19 +1332,39 @@ sub end_label {
sub start_curve {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- my $curve = &newhashref();
- &get_attributes($curve,\%curve_defaults,$parstack,$safeeval,'curve');
- push (@curves,$curve);
-
- &Apache::lonxml::register('Apache::plot',('function','data'));
+ &Apache::lonxml::register('Apache::lonplot',('function','data'));
push (@Apache::lonxml::namespace,'curve');
-
+ if ($target eq 'web' || $target eq 'tex') {
+ my %curve;
+ &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ push (@curves,\%curve);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Curve');
+ $result .= &edit_attributes($target,$token,\%curve_defaults,
+ \@curve_edit_order)
+ .&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row();
+
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%curve_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
return $result;
}
sub end_curve {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ pop @Apache::lonxml::namespace;
+ &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ }
return $result;
}
@@ -237,15 +1372,38 @@ sub end_curve {
sub start_function {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
-
- $curves[-1]->{'function'} =
- &Apache::lonxml::get_all_text("/function",$$parser[-1]);
+ if ($target eq 'web' || $target eq 'tex') {
+ if (exists($curves[-1]->{'data'})) {
+ &Apache::lonxml::warning
+ ('Use of the <b>curve function</b> tag precludes use of '.
+ ' the <b>curve data</b> tag. '.
+ 'The curve data tag will be omitted in favor of the '.
+ 'curve function declaration.');
+ delete $curves[-1]->{'data'} ;
+ }
+ my $function = &Apache::lonxml::get_all_text("/function",$parser,
+ $style);
+ $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
+ $function=~s/\^/\*\*/gs;
+ $curves[-1]->{'function'} = $function;
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
+ my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
+ $result .= &Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/function",$parser);
+ }
return $result;
}
sub end_function {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::end_table();
+ }
return $result;
}
@@ -253,14 +1411,74 @@ sub end_function {
sub start_data {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- push( @{$curves[-1]->{'data'}},
- &Apache::lonxml::get_all_text("/data",$$parser[-1]));
+ if ($target eq 'web' || $target eq 'tex') {
+ if (exists($curves[-1]->{'function'})) {
+ &Apache::lonxml::warning
+ ('Use of the <b>curve function</b> tag precludes use of '.
+ ' the <b>curve data</b> tag. '.
+ 'The curve function tag will be omitted in favor of the '.
+ 'curve data declaration.');
+ delete($curves[-1]->{'function'});
+ }
+ my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
+ $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
+ # Deal with cases where we're given an array...
+ if ($datatext =~ /^\@/) {
+ $datatext = &Apache::run::run('return "'.$datatext.'"',
+ $safeeval,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 =~ /,/) { # comma deliminated
+ @data = split /,/,$datatext;
+ } else { # Assume it's space separated.
+ @data = split / /,$datatext;
+ }
+ for (my $i=0;$i<=$#data;$i++) {
+ # Check that it's non-empty
+ if (! defined($data[$i])) {
+ &Apache::lonxml::warning(
+ 'undefined curve data 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 curve data value of '.$data[$i].' Replacing with '.
+ ' pi/e = 1.15572734979092');
+ $data[$i] = 1.15572734979092;
+ }
+ }
+ # complain if the number of data points is not the same as
+ # in previous sets of data.
+ if (($curves[-1]->{'data'}) && ($#data != $#{$curves[-1]->{'data'}->[0]})){
+ &Apache::lonxml::warning
+ ('Number of data points is not consistent with previous '.
+ 'number of data points');
+ }
+ push @{$curves[-1]->{'data'}},\@data;
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
+ my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
+ $result .= &Apache::edit::editline('',$text,'',60);
+ } elsif ($target eq 'modified') {
+ $result.=&Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::modifiedfield("/data",$parser);
+ }
return $result;
}
sub end_data {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::end_table();
+ }
return $result;
}
@@ -268,38 +1486,690 @@ sub end_data {
sub start_axis {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
- &get_attributes(\%axis,\%label_defaults,$parstack,$safeeval,'axis');
+ if ($target eq 'web' || $target eq 'tex') {
+ &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
+ $tagstack->[-1]);
+ } elsif ($target eq 'edit') {
+ $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
+ $result .= &edit_attributes($target,$token,\%axis_defaults,
+ \@axis_edit_order);
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args
+ ($token,$parstack,$safeeval,keys(%axis_defaults));
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ }
+ }
return $result;
}
sub end_axis {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_end($target,$token);
+ } elsif ($target eq 'modified') {
+ }
return $result;
}
-##------------------------------------------------------------------- misc
-sub newhashref{
- my %hash;
- return \%hash;
+###################################################################
+## ##
+## Utility Functions ##
+## ##
+###################################################################
+
+##----------------------------------------------------------- set_defaults
+sub set_defaults {
+ my ($var,$defaults) = @_;
+ my $key;
+ foreach $key (keys(%$defaults)) {
+ $var->{$key} = $defaults->{$key}->{'default'};
+ }
}
+##------------------------------------------------------------------- misc
sub get_attributes{
- %values = %{shift};
- %defaults = %{shift};
- $parstack = shift;
- $safeeval = shift;
- $tag = shift;
- my $attr;
- foreach $attr (keys %defaults) {
- $values{$attr} = &Apache::lonxml::get_param($attr,$parstack,$safeeval);
- my $test = $defaults{$attr}->{'test'};
- if (! &$test($values{$attr})) {
- &Apache::lonxml::warning($tag.':'.$attr.': Bad value. Replacing your value with : '.$defaults{$attr});
- $values{$attr} = $defaults{$attr};
+ my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
+ foreach my $attr (keys(%{$defaults})) {
+ if ($attr eq 'texwidth' || $attr eq 'texfont') {
+ $values->{$attr} =
+ &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
+ } else {
+ $values->{$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 ($tmpdir,$filename,$target)= @_;
+ my ($fontsize, $font_properties) = &get_font($target);
+ my $gnuplot_input = '';
+ my $curve;
+ #
+ # Check to be sure we do not have any empty curves
+ my @curvescopy;
+ foreach my $curve (@curves) {
+ if (exists($curve->{'function'})) {
+ if ($curve->{'function'} !~ /^\s*$/) {
+ push(@curvescopy,$curve);
+ }
+ } elsif (exists($curve->{'data'})) {
+ foreach my $data (@{$curve->{'data'}}) {
+ if (scalar(@$data) > 0) {
+ push(@curvescopy,$curve);
+ last;
+ }
+ }
+ }
+ }
+ @curves = @curvescopy;
+ # Collect all the colors
+ my @Colors;
+ push @Colors, $Apache::lonplot::plot{'bgcolor'};
+ push @Colors, $Apache::lonplot::plot{'fgcolor'};
+ push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
+ foreach $curve (@curves) {
+ push @Colors, ($curve->{'color'} ne '' ?
+ $curve->{'color'} :
+ $Apache::lonplot::plot{'fgcolor'} );
+ }
+ # set term
+ if ($target eq 'web') {
+ $gnuplot_input .= 'set terminal png enhanced nocrop ';
+ $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
+ $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
+ '/'.$font_properties->{'file'}.'.ttf" ';
+ $gnuplot_input .= $fontsize;
+ $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
+ $gnuplot_input .= "@Colors\n";
+ # set output
+ $gnuplot_input .= "set output\n";
+ } elsif ($target eq 'tex') {
+ $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
+ if (!$font_properties->{'tex_no_file'}) {
+ $gnuplot_input .=
+ 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
+ '/'.$font_properties->{'file'}.'.pfb" ';
+ }
+ $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
+ $gnuplot_input .= $fontsize;
+ $gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/".
+ &unescape($filename).".eps\"\n";
+ $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
+
+ }
+ # cartesian or polar plot?
+ if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
+ $gnuplot_input .= 'set polar'.$/;
+ } else {
+ # Assume Cartesian
+ }
+ # cartesian or polar grid?
+ if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
+ $gnuplot_input .= 'set grid polar'.$/;
+ } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
+ $gnuplot_input .= 'set logscale x'.$/;
+ } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
+ $gnuplot_input .= 'set logscale y'.$/;
+ } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
+ $gnuplot_input .= 'set logscale x'.$/;
+ $gnuplot_input .= 'set logscale y'.$/;
+ } else {
+ # Assume Cartesian
+ }
+ # solid or pattern for boxes?
+ if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
+ $gnuplot_input .= 'set style fill solid '.
+ $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
+ } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
+ $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
+ } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
+ }
+ # margin
+ if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
+ $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
+ }
+ if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
+ $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
+ }
+ if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
+ $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
+ }
+ if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
+ $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
+ }
+
+ # tic scales
+ if ($version > 4) {
+ $gnuplot_input .= 'set tics scale '.
+ $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
+ } else {
+ $gnuplot_input .= 'set ticscale '.
+ $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
+ }
+ #boxwidth
+ if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
+ $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
+ }
+ # gridlayer
+ $gnuplot_input .= 'set grid noxtics noytics front '.$/
+ if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
+
+ # grid
+ $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
+ # border
+ $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
+ 'set border'.$/ :
+ 'set noborder'.$/ );
+ # sampling rate for non-data curves
+ $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
+ # title, xlabel, ylabel
+ # titles
+ my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
+ my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
+
+ if ($target eq 'tex') {
+ $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
+ $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
+ $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
+ } else {
+ $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
+ $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
+ $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
+ }
+ # tics
+ if (%xtics) {
+ $gnuplot_input .= "set xtics $xtics{'location'} ";
+ $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
+ $gnuplot_input .= "$xtics{'start'}, ";
+ $gnuplot_input .= "$xtics{'increment'}, ";
+ $gnuplot_input .= "$xtics{'end'} ";
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso 8859-1 enc.
+ }
+ $gnuplot_input .= "\n";
+ if ($xtics{'minorfreq'} != 0) {
+ $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
+ }
+ } else {
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc
+ }
+ }
+ if (%ytics) {
+ $gnuplot_input .= "set ytics $ytics{'location'} ";
+ $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
+ $gnuplot_input .= "$ytics{'start'}, ";
+ $gnuplot_input .= "$ytics{'increment'}, ";
+ $gnuplot_input .= "$ytics{'end'} ";
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding.
+ }
+ $gnuplot_input .= "\n";
+ if ($ytics{'minorfreq'} != 0) {
+ $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
+ }
+ } else {
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc.
+ }
+ }
+ # axis
+ if (%axis) {
+ if ($axis{'xformat'} ne 'on') {
+ $gnuplot_input .= "set format x ";
+ if ($axis{'xformat'} eq 'off') {
+ $gnuplot_input .= "\"\"\n";
+ } else {
+ $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
+ }
+ }
+ if ($axis{'yformat'} ne 'on') {
+ $gnuplot_input .= "set format y ";
+ if ($axis{'yformat'} eq 'off') {
+ $gnuplot_input .= "\"\"\n";
+ } else {
+ $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
+ }
+ }
+ $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
+ $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
+ if ($axis{'xzero'} ne 'off') {
+ $gnuplot_input .= "set xzeroaxis ";
+ if ($axis{'xzero'} eq 'line' || $axis{'xzero'} eq 'thick-line') {
+ $gnuplot_input .= "lt -1 ";
+ if ($axis{'xzero'} eq 'thick-line') {
+ $gnuplot_input .= "lw 3 ";
+ }
+ }
+ $gnuplot_input .= "\n";
+ }
+ if ($axis{'yzero'} ne 'off') {
+ $gnuplot_input .= "set yzeroaxis ";
+ if ($axis{'yzero'} eq 'line' || $axis{'yzero'} eq 'thick-line') {
+ $gnuplot_input .= "lt -1 ";
+ if ($axis{'yzero'} eq 'thick-line') {
+ $gnuplot_input .= "lw 3 ";
+ }
+ }
+ $gnuplot_input .= "\n";
+ }
+ }
+ # Key
+ if (%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'};
+ if ($label->{'rotate'} ne '') {
+ $gnuplot_input .= ' rotate by '.$label->{'rotate'};
+ }
+ $gnuplot_input .= ' '.$label->{'justify'};
+
+ if ($target eq 'tex') {
+ $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
+ }
+ $gnuplot_input .= $/;
+ }
+ if ($target eq 'tex') {
+ $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
+ $gnuplot_input .="\n";
+ }
+ # curves
+ $gnuplot_input .= 'plot ';
+ for (my $i = 0;$i<=$#curves;$i++) {
+ $curve = $curves[$i];
+ $gnuplot_input.= ', ' if ($i > 0);
+ if ($target eq 'tex') {
+ $curve->{'linewidth'} *= 2;
+ }
+ if (exists($curve->{'function'})) {
+ $gnuplot_input.=
+ $curve->{'function'}.' title "'.
+ $curve->{'name'}.'" with '.
+ $curve->{'linestyle'};
+
+ if (($curve->{'linestyle'} eq 'points') ||
+ ($curve->{'linestyle'} eq 'linespoints') ||
+ ($curve->{'linestyle'} eq 'errorbars') ||
+ ($curve->{'linestyle'} eq 'xerrorbars') ||
+ ($curve->{'linestyle'} eq 'yerrorbars') ||
+ ($curve->{'linestyle'} eq 'xyerrorbars')) {
+ $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
+ $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
+ } elsif ($curve->{'linestyle'} eq 'filledcurves') {
+ $gnuplot_input.= ' '.$curve->{'limit'};
+ } elsif ($curve->{'linetype'} ne '' &&
+ $curve->{'linestyle'} eq 'lines') {
+ $gnuplot_input.= ' linetype ';
+ $gnuplot_input.= $linetypes{$curve->{'linetype'}};
+ $gnuplot_input.= ' linecolor rgb "';
+ # convert color from xaaaaaa to #aaaaaa
+ $curve->{'color'} =~ s/^x/#/;
+ $gnuplot_input.= $curve->{'color'}.'"';
+ }
+ $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
+
+ } elsif (exists($curve->{'data'})) {
+ # Store data values in $datatext
+ my $datatext = '';
+ # get new filename
+ my $datafilename = "$tmpdir/$filename.data.$i";
+ my $fh=Apache::File->new(">$datafilename");
+ # Compile data
+ my @Data = @{$curve->{'data'}};
+ my @Data0 = @{$Data[0]};
+ for (my $i =0; $i<=$#Data0; $i++) {
+ my $dataset;
+ foreach $dataset (@Data) {
+ $datatext .= $dataset->[$i] . ' ';
+ }
+ $datatext .= $/;
+ }
+ # write file
+ print $fh $datatext;
+ close($fh);
+ # generate gnuplot text
+ $gnuplot_input.= '"'.$datafilename.'" title "'.
+ $curve->{'name'}.'" with '.
+ $curve->{'linestyle'};
+ if (($curve->{'linestyle'} eq 'points') ||
+ ($curve->{'linestyle'} eq 'linespoints') ||
+ ($curve->{'linestyle'} eq 'errorbars') ||
+ ($curve->{'linestyle'} eq 'xerrorbars') ||
+ ($curve->{'linestyle'} eq 'yerrorbars') ||
+ ($curve->{'linestyle'} eq 'xyerrorbars')) {
+ $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
+ $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
+ } elsif ($curve->{'linestyle'} eq 'filledcurves') {
+ $gnuplot_input.= ' '.$curve->{'limit'};
+ } elsif ($curve->{'linetype'} ne '' &&
+ $curve->{'linestyle'} eq 'lines') {
+ $gnuplot_input.= ' linetype ';
+ $gnuplot_input.= $linetypes{$curve->{'linetype'}};
+ $gnuplot_input.= ' linecolor rgb "';
+ # convert color from xaaaaaa to #aaaaaa
+ $curve->{'color'} =~ s/^x/#/;
+ $gnuplot_input.= $curve->{'color'}.'"';
+ }
+ $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
+ }
+ }
+ # Write the output to a file.
+ open (my $fh,">$tmpdir$filename.data");
+ binmode($fh, ":utf8");
+ print $fh $gnuplot_input;
+ close($fh);
+ # That's all folks.
+ return ;
+}
+
+#---------------------------------------------- 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 (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
+ if (! %key ) {} # No key for this plot, thats okay
+# if (! %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($curve->{'data'})){
+ &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
+ return '';
+ }
+ }
+}
+
+#------------------------------------------------ make_edit
+sub edit_attributes {
+ my ($target,$token,$defaults,$keys) = @_;
+ my ($result,@keys);
+ if ($keys && ref($keys) eq 'ARRAY') {
+ @keys = @$keys;
+ } else {
+ @keys = sort(keys(%$defaults));
+ }
+ foreach my $attr (@keys) {
+ # append a ' ' to the description if it doesn't have one already.
+ my $description = $defaults->{$attr}->{'description'};
+ $description .= ' ' if ($description !~ / $/);
+ if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
+ $result .= &Apache::edit::text_arg
+ ($description,$attr,$token,
+ $defaults->{$attr}->{'size'});
+ } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
+ $result .= &Apache::edit::select_or_text_arg
+ ($description,$attr,$defaults->{$attr}->{'choices'},$token);
+ } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
+ $result .= &Apache::edit::select_or_text_arg
+ ($description,$attr,['on','off'],$token);
+ }
+ $result .= '<br />';
+ }
+ return $result;
+}
+
+
+###################################################################
+## ##
+## Insertion functions for editing plots ##
+## ##
+###################################################################
+
+sub insert_gnuplot {
+ my $result = '';
+ # plot attributes
+ $result .= "\n<gnuplot ";
+ foreach my $attr (keys(%gnuplot_defaults)) {
+ $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
+ }
+ $result .= ">";
+ # Add the components (most are commented out for simplicity)
+ # $result .= &insert_key();
+ # $result .= &insert_axis();
+ # $result .= &insert_title();
+ # $result .= &insert_xlabel();
+ # $result .= &insert_ylabel();
+ $result .= &insert_curve();
+ # close up the <gnuplot>
+ $result .= "\n</gnuplot>";
+ return $result;
+}
+
+sub insert_tics {
+ my $result;
+ $result .= &insert_xtics() . &insert_ytics;
+ return $result;
+}
+
+sub insert_xtics {
+ my $result;
+ $result .= "\n <xtics ";
+ foreach my $attr (keys(%tic_defaults)) {
+ $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
+ }
+ $result .= "/>";
+ return $result;
+}
+
+sub insert_ytics {
+ my $result;
+ $result .= "\n <ytics ";
+ foreach my $attr (keys(%tic_defaults)) {
+ $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
+ }
+ $result .= "/>";
+ return $result;
+}
+
+sub insert_key {
+ my $result;
+ $result .= "\n <key ";
+ foreach my $attr (keys(%key_defaults)) {
+ $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
+ }
+ $result .= " />";
+ return $result;
+}
+
+sub insert_axis{
+ my $result;
+ $result .= "\n <axis ";
+ foreach my $attr (keys(%axis_defaults)) {
+ $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
+ }
+ $result .= " />";
+ return $result;
+}
+
+sub insert_title { return "\n <title></title>"; }
+sub insert_xlabel { return "\n <xlabel></xlabel>"; }
+sub insert_ylabel { return "\n <ylabel></ylabel>"; }
+
+sub insert_label {
+ my $result;
+ $result .= "\n <label ";
+ foreach my $attr (keys(%label_defaults)) {
+ $result .= "\n $attr=\"".
+ $label_defaults{$attr}->{'default'}."\"";
+ }
+ $result .= "></label>";
+ return $result;
+}
+
+sub insert_curve {
+ my $result;
+ $result .= "\n <curve ";
+ foreach my $attr (keys(%curve_defaults)) {
+ $result .= "\n $attr=\"".
+ $curve_defaults{$attr}->{'default'}."\"";
+ }
+ $result .= " >";
+ $result .= &insert_data().&insert_data()."\n </curve>";
+}
+
+sub insert_function {
+ my $result;
+ $result .= "\n <function></function>";
+ return $result;
+}
+
+sub insert_data {
+ my $result;
+ $result .= "\n <data></data>";
+ return $result;
+}
+
+##----------------------------------------------------------------------
1;
__END__
+
+
+=head1 NAME
+
+Apache::lonplot.pm
+
+=head1 SYNOPSIS
+
+XML-based plotter of graphs
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+
+=head1 SUBROUTINES (parsing and edit rendering)
+
+=over
+
+=item start_gnuplot()
+
+=item end_gnuplot()
+
+=item start_xtics()
+
+=item end_xtics()
+
+=item start_ytics()
+
+=item end_ytics()
+
+=item get_font()
+
+=item start_key()
+
+=item end_key()
+
+=item parse_label()
+
+=item replace_entities()
+
+=item start_title()
+
+=item end_title()
+
+=item start_xlabel()
+
+=item end_xlabel()
+
+=item start_ylabel()
+
+=item end_label()
+
+=item start_curve()
+
+=item end_curve()
+
+=item start_function()
+
+=item end_function()
+
+=item start_data()
+
+=item end_data()
+
+=item start_axis()
+
+=item end_axis
+
+=back
+
+=head1 SUBROUTINES (Utility)
+
+=over
+
+=item set_defaults()
+
+=item get_attributes()
+
+=item write_gnuplot_file()
+
+=item check_inputs()
+
+=item edit_attributes()
+
+=back
+
+=head1 SUBROUTINES (Insertion functions for editing plots)
+
+=over
+
+=item insert_gnuplot()
+
+=item insert_tics()
+
+=item insert_xtics()
+
+=item insert_key()
+
+=item insert_axis()
+
+=item insert_title()
+
+=item insert_xlabel()
+
+=item insert_ylabel()
+
+=item insert_label()
+
+=item insert_curve()
+
+=item insert_function()
+
+=item insert_data()
+
+=back
+
+=cut