--- loncom/xml/lonplot.pm 2001/12/27 19:47:02 1.19 +++ loncom/xml/lonplot.pm 2007/08/03 20:48:01 1.126 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Dynamic plot # -# $Id: lonplot.pm,v 1.19 2001/12/27 19:47:02 matthew Exp $ +# $Id: lonplot.pm,v 1.126 2007/08/03 20:48:01 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,19 +25,38 @@ # # http://www.lon-capa.org/ # -# 12/15/01 Matthew -# 12/17 12/18 12/19 12/20 12/21 Matthew + package Apache::lonplot; use strict; +use warnings FATAL=>'all'; +no warnings 'uninitialized'; use Apache::File; use Apache::response; use Apache::lonxml; +use Apache::edit; +use Apache::lonnet; +use lib '/home/httpd/lib/perl/'; +use LONCAPA; + + +use vars qw/$weboutputformat $versionstring/; + -sub BEGIN { - &Apache::lonxml::register('Apache::lonplot',('plot')); + +BEGIN { + &Apache::lonxml::register('Apache::lonplot',('gnuplot')); + # + # Determine the version of GNUPLOT + $weboutputformat = 'gif'; + $versionstring = `gnuplot --version 2>/dev/null`; + if ($versionstring =~ /^gnuplot 4/) { + $weboutputformat = 'png'; + } + } + ## ## Description of data structures: ## @@ -62,151 +81,668 @@ sub BEGIN { ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4], ## [y1,y2,y3,y4] ] ## -##------------------------------------------------------------ -## -## Tests used in checking the validitity of input -## + +################################################################### +## ## +## Tests used in checking the validitity of input ## +## ## +################################################################### + +my $max_str_len = 50; # if a label, title, xlabel, or ylabel text + # is longer than this, it will be truncated. + +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 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 $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/}; +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]=~/^(small|medium|large)$/}; -my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/}; -my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/}; -## -## Default values for attributes of elements -## -my %plot_defaults = +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 => $sml_test }, - align => {default => 'left', test => - sub {$_[0]=~/^(left|right|center)$/} } + 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 => '', test => $words_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 => $real_test }, - justify => {default => 'left', - test => sub {$_[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)$/}, + description => 'justification of the label text on the plot', + edit_type => 'choice', + choices => ['left','right','center'] + } ); +my @tic_edit_order = ('location','mirror','start','increment','end', + 'minorfreq'); +my %tic_defaults = + ( + location => { + default => 'border', + test => sub {$_[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'); my %axis_defaults = ( - color => {default => 'x000000', test => $color_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 }, - linestyle => {default => 'points', test => $linestyle_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' + } ); +my @curve_edit_order = ('color','name','linestyle','linewidth','pointtype','pointsize','limit'); + my %curve_defaults = ( - color => {default => 'x000000', test => $color_test }, - name => {default => '', test => $words_test }, - 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 => 'Line style', + edit_type => 'choice', + choices => [keys(%linestyles)] + }, + linewidth => { + default => 2, + test => $int_test, + description => 'Line width (may not apply to all line styles)', + edit_type => 'choice', + choices => [1,2,3,4,5,6,7,8,9,10] + }, + pointsize => { + default => 1, + test => $pos_real_test, + description => 'Point size (may not apply to all line styles)', + edit_type => 'entry', + size => '5' + }, + pointtype => { + default => 1, + test => $int_test, + description => 'Point type (may not apply to all line styles)', + edit_type => 'choice', + choices => [0,1,2,3,4,5,6] + }, + limit => { + default => 'closed', + test => sub {$_[0]=~/^(closed|x1|x2|y1|y2)$/}, + description => 'Point to fill -- for filledcurves', + edit_type => 'choice', + choices => ['closed','x1','x2','y1','y2'] + }, ); -## -## End of defaults -## -my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves); - -sub start_plot { - %plot = undef; %key = undef; %axis = undef; - $title = undef; $xlabel = undef; $ylabel = undef; - $#labels = -1; $#curves = -1; +################################################################### +## ## +## parsing and edit rendering ## +## ## +################################################################### + +undef %Apache::lonplot::plot; +my (%key,%axis,$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 $result=''; - if ($target eq 'web') { - &Apache::lonxml::register('Apache::lonplot', - ('title','xlabel','ylabel','key','axis','label','curve')); - push (@Apache::lonxml::namespace,'plot'); - ## Always evaluate the insides of the tags - my $inside = &Apache::lonxml::get_all_text("/plot",$$parser[-1]); - $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); - &Apache::lonxml::newparser($parser,\$inside); - ##------------------------------------------------------- - &get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval, + &Apache::lonxml::register('Apache::lonplot', + ('title','xlabel','ylabel','key','axis','label','curve', + 'xtics','ytics')); + push (@Apache::lonxml::namespace,'lonplot'); + if ($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 ''; + return $result; } -sub end_plot { +sub end_gnuplot { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; pop @Apache::lonxml::namespace; &Apache::lonxml::deregister('Apache::lonplot', ('title','xlabel','ylabel','key','axis','label','curve')); my $result = ''; - if ($target eq 'web') { - ## - ## 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 - if (! defined(%axis )) { &set_defaults(\%axis,\%axis_defaults); } - if (! defined($title )) {} # No title for this plot - if (! defined($xlabel)) {} # No xlabel for this plot - if (! defined($ylabel)) {} # No ylabel for this plot - if ($#labels < 0) { } # No labels for this plot - 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 ''; - } - } + 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.'_'.$$.'_plot.data'; + my $filename = $env{'user.name'}.'_'.$env{'user.domain'}. + '_'.time.'_'.$$.$randnumber.'_plot'; ## Write the plot description to the file - my $fh=Apache::File->new(">$tmpdir$filename"); - print $fh &write_gnuplot_file(); - close($fh); + &write_gnuplot_file($tmpdir,$filename,$target); + $filename = &escape($filename); ## return image tag for the plot - $result .= <<"ENDIMAGE"; -/cgi-bin/plot.gif?$filename + if ($target eq 'web') { + $result .= <<"ENDIMAGE"; +$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 $result; } + +##--------------------------------------------------------------- xtics +sub start_xtics { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($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 $result; +} + +sub end_xtics { + my ($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 $result; +} + +##--------------------------------------------------------------- ytics +sub start_ytics { + my ($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'})) { + $size = $Apache::lonplot::plot{'texfont'}; + } + return ($size, $selected_font); +} + ##----------------------------------------------------------------- key sub start_key { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { &get_attributes(\%key,\%key_defaults,$parstack,$safeeval, $tagstack->[-1]); - # This routine should never return anything. + } elsif ($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 $result; } @@ -214,18 +750,31 @@ sub start_key { sub end_key { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); } return $result; } + ##------------------------------------------------------------------- title sub start_title { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { - $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]); - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + $title = &Apache::lonxml::get_all_text("/title",$parser,$style); + $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]); + $title =~ s/\n/ /g; + if (length($title) > $max_str_len) { + $title = substr($title,0,$max_str_len); + } + } elsif ($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 $result; } @@ -233,8 +782,9 @@ sub start_title { sub end_title { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); } return $result; } @@ -242,9 +792,20 @@ sub end_title { sub start_xlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { - $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]); - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style); + $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]); + $xlabel =~ s/\n/ /g; + if (length($xlabel) > $max_str_len) { + $xlabel = substr($xlabel,0,$max_str_len); + } + } elsif ($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 $result; } @@ -252,18 +813,31 @@ sub start_xlabel { sub end_xlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + 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 $result=''; - if ($target eq 'web') { - $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]); - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style); + $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]); + $ylabel =~ s/\n/ /g; + if (length($ylabel) > $max_str_len) { + $ylabel = substr($ylabel,0,$max_str_len); + } + } elsif ($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 $result; } @@ -271,35 +845,49 @@ sub start_ylabel { sub end_ylabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + 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 $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { my %label; &get_attributes(\%label,\%label_defaults,$parstack,$safeeval, $tagstack->[-1]); - $label{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]); - if (! &$words_test($label{'text'})) { - # I should probably warn about it, too. - $label{'text'} = 'Illegal text'; - } + my $text = &Apache::lonxml::get_all_text("/label",$parser,$style); + $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]); + $text =~ s/\n/ /g; + $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len); + $label{'text'} = $text; push(@labels,\%label); + } elsif ($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); } - # This routine should never return anything. return $result; } sub end_label { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); } return $result; } @@ -308,14 +896,26 @@ sub end_label { sub start_curve { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + &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, $tagstack->[-1]); push (@curves,\%curve); - &Apache::lonxml::register('Apache::lonplot',('function','data')); - push (@Apache::lonxml::namespace,'curve'); - # This routine should never return anything. + } elsif ($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 $result; } @@ -323,25 +923,39 @@ sub start_curve { sub end_curve { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - pop @Apache::lonxml::namespace; - &Apache::lonxml::deregister('Apache::lonplot',('function','data')); - # This routine should never return anything. + 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 $result; } + ##------------------------------------------------------------ curve function sub start_function { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { if (exists($curves[-1]->{'data'})) { - &Apache::lonxml::warning('Use of precludes use of . The will be omitted in favor of the declaration.'); + &Apache::lonxml::warning + ('Use of the curve function tag precludes use of '. + ' the curve data tag. '. + 'The curve data tag will be omitted in favor of the '. + 'curve function declaration.'); delete $curves[-1]->{'data'} ; } - $curves[-1]->{'function'} = - &Apache::lonxml::get_all_text("/function",$$parser[-1]); - # This routine should never return anything. + my $function = &Apache::lonxml::get_all_text("/function",$parser, + $style); + $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]); + $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 $result; } @@ -349,51 +963,74 @@ sub start_function { sub end_function { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result .= &Apache::edit::end_table(); } return $result; } + ##------------------------------------------------------------ curve data sub start_data { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { if (exists($curves[-1]->{'function'})) { - &Apache::lonxml::warning('Use of precludes use of .'. - '. The will be omitted in favor of '. - 'the declaration.'); + &Apache::lonxml::warning + ('Use of the curve function tag precludes use of '. + ' the curve data 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",$$parser[-1]); - $datatext =~ s/\s+/ /g; + my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style); + $datatext=&Apache::run::evaluate($datatext,$safeeval,$$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 =~ /,/) { + if ($datatext =~ /,/) { # comma deliminated @data = split /,/,$datatext; - } else { # Assume it's space seperated. + } 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 value. Replacing with '. + '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 value of '.$data[$i].' Replacing with '. + '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 @{$curves[-1]->{'data'}},\@data; - # This routine should never return anything. + } elsif ($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 $result; } @@ -401,8 +1038,9 @@ sub start_data { sub end_data { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result .= &Apache::edit::end_table(); } return $result; } @@ -411,10 +1049,19 @@ sub end_data { sub start_axis { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval, $tagstack->[-1]); - # This routine should never return anything. + } elsif ($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 $result; } @@ -422,32 +1069,40 @@ sub start_axis { sub end_axis { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { - # This routine should never return anything. + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); + } elsif ($target eq 'modified') { } return $result; } +################################################################### +## ## +## Utility Functions ## +## ## +################################################################### + ##----------------------------------------------------------- set_defaults sub set_defaults { - my $var = shift; - my $defaults = shift; + my ($var,$defaults) = @_; my $key; - foreach $key (keys %$defaults) { + foreach $key (keys(%$defaults)) { $var->{$key} = $defaults->{$key}->{'default'}; } } ##------------------------------------------------------------------- misc sub get_attributes{ - my $values = shift; - my $defaults = shift; - my $parstack = shift; - my $safeeval = shift; - my $tag = shift; - foreach my $attr (keys %{$defaults}) { - $values->{$attr} = - &Apache::lonxml::get_param($attr,$parstack,$safeeval); + my ($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; @@ -462,42 +1117,165 @@ sub get_attributes{ } 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, $plot{'bgcolor'}; - push @Colors, $plot{'fgcolor'}; - push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'}); + 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'} : - $plot{'fgcolor'} ); + $Apache::lonplot::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'}.' '; - $gnuplot_input .= "@Colors\n"; + if ($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"; + } + # 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 + $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 ($plot{'grid'} eq 'on'); + $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on'); # border - $gnuplot_input .= ($plot{'border'} eq 'on'? + $gnuplot_input .= ($Apache::lonplot::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($ylabel)); - if (defined(%axis)) { + 'set noborder'.$/ ); + # 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'}\n"; + if ($xtics{'minorfreq'} != 0) { + $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n"; + } + } + 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'}\n"; + if ($ytics{'minorfreq'} != 0) { + $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n"; + } + } + # axis + if (%axis) { $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n"; $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n"; } # Key - if (defined(%key)) { + if (%key) { $gnuplot_input .= 'set key '.$key{'pos'}.' '; if ($key{'title'} ne '') { $gnuplot_input .= 'title "'.$key{'title'}.'" '; @@ -510,23 +1288,49 @@ sub write_gnuplot_file { my $label; foreach $label (@labels) { $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. - $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ; + $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}; + if ($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 '; - my $datatext = ''; 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'}; + $curve->{'linestyle'}; + $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; + + 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 (exists($curve->{'data'})) { - $gnuplot_input.= '\'-\' title "'. - $curve->{'name'}.'" with '. - $curve->{'linestyle'}; + # 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++) { @@ -536,17 +1340,201 @@ sub write_gnuplot_file { } $datatext .= $/; } - $datatext .=$/; + # write file + print $fh $datatext; + close($fh); + # generate gnuplot text + $gnuplot_input.= '"'.$datafilename.'" title "'. + $curve->{'name'}.'" with '. + $curve->{'linestyle'}; + $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; + 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'}; + } } } - $gnuplot_input .= $/.$datatext; - return $gnuplot_input; + # Write the output to a file. + my $fh=Apache::File->new(">$tmpdir$filename.data"); + print $fh $gnuplot_input; + close($fh); + # That's all folks. + return ; } -1; -__END__ +#---------------------------------------------- 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 .= '
'; + } + return $result; +} + + +################################################################### +## ## +## Insertion functions for editing plots ## +## ## +################################################################### + +sub insert_gnuplot { + my $result = ''; + # plot attributes + $result .= "\n{'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 + $result .= "\n"; + return $result; +} + +sub insert_tics { + my $result; + $result .= &insert_xtics() . &insert_ytics; + return $result; +} + +sub insert_xtics { + my $result; + $result .= "\n {'default'}\" "; + } + $result .= "/>"; + return $result; +} + +sub insert_ytics { + my $result; + $result .= "\n {'default'}\" "; + } + $result .= "/>"; + return $result; +} +sub insert_key { + my $result; + $result .= "\n {'default'}\""; + } + $result .= " />"; + return $result; +} +sub insert_axis{ + my $result; + $result .= "\n {'default'}\""; + } + $result .= " />"; + return $result; +} +sub insert_title { return "\n "; } +sub insert_xlabel { return "\n "; } +sub insert_ylabel { return "\n "; } + +sub insert_label { + my $result; + $result .= "\n "; + return $result; +} + +sub insert_curve { + my $result; + $result .= "\n {'default'}."\""; + } + $result .= " >"; + $result .= &insert_data().&insert_data()."\n "; +} + +sub insert_function { + my $result; + $result .= "\n "; + return $result; +} + +sub insert_data { + my $result; + $result .= "\n "; + return $result; +} + +##---------------------------------------------------------------------- +1; +__END__