File:
[LON-CAPA] /
loncom /
xml /
lonplot.pm
Revision
1.157:
download - view:
text,
annotated -
select for diffs
Wed Jul 4 11:06:57 2012 UTC (11 years, 10 months ago) by
foxr
Branches:
MAIN
CVS tags:
HEAD
BZ6588 - First refactor and simplify the generation of gnuplot commands.
- Second address the bug by associating a linestye with each plot
and using that to select the plot attributes rather than cramming
all the attributes into the plot command.
- Finally, fix the fact that line style numbers differ between
eps and png drivers so that now dashed lines work in eps output
where I don't think they did before.
1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
4: # $Id: lonplot.pm,v 1.157 2012/07/04 11:06:57 foxr Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29:
30:
31:
32: package Apache::lonplot;
33:
34: use strict;
35: use warnings FATAL=>'all';
36: no warnings 'uninitialized';
37: use Apache::File;
38: use Apache::response;
39: use Apache::lonxml;
40: use Apache::edit;
41: use Apache::lonnet;
42: use LONCAPA;
43:
44:
45: use vars qw/$weboutputformat $version/;
46:
47:
48:
49: BEGIN {
50: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
51: #
52: # Determine the version of GNUPLOT
53: $weboutputformat = 'gif';
54: my $versionstring = `gnuplot --version 2>/dev/null`;
55: ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
56: if ($version >= 4) {
57: $weboutputformat = 'png';
58: }
59:
60: }
61:
62:
63: =pod
64:
65: ##
66: ## Description of data structures:
67: ##
68: ## %plot %key %axis
69: ## --------------------------
70: ## height title color
71: ## width box xmin
72: ## bgcolor pos xmax
73: ## fgcolor ymin
74: ## transparent ymax
75: ## grid
76: ## border
77: ## font
78: ## align
79: ##
80: ## @labels: $labels[$i] = \%label
81: ## %label: text, xpos, ypos, justify
82: ##
83: ## @curves: $curves[$i] = \%curve
84: ## %curve: name, linestyle, ( function | data )
85: ##
86: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
87: ## [y1,y2,y3,y4] ]
88: ##
89:
90: ###################################################################
91: ## ##
92: ## Tests used in checking the validitity of input ##
93: ## ##
94: ###################################################################
95:
96: =cut
97:
98: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
99: # is longer than this, it will be truncated.
100:
101: my %linetypes = # For png use these linetypes.
102: (
103: solid => 1,
104: dashed => 0
105: );
106: my %ps_linetypes = # For ps the line types are different!
107: (
108: solid => 0,
109: dashed => 7
110: );
111:
112: my %linestyles =
113: (
114: lines => 2, # Maybe this will be used in the future
115: linespoints => 2, # to check on whether or not they have
116: dots => 2, # supplied enough <data></data> fields
117: points => 2, # to use the given line style. But for
118: steps => 2, # now there are more important things
119: fsteps => 2, # for me to deal with.
120: histeps => 2,
121: errorbars => 3,
122: xerrorbars => [3,4],
123: yerrorbars => [3,4],
124: xyerrorbars => [4,6],
125: boxes => 3,
126: filledcurves => 2,
127: vector => 4
128: );
129:
130: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
131: my $real_test =
132: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
133: my $pos_real_test =
134: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
135: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
136: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
137: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
138: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
139: my $linestyle_test = sub {exists($linestyles{$_[0]})};
140: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
141:
142: ###################################################################
143: ## ##
144: ## Attribute metadata ##
145: ## ##
146: ###################################################################
147: my @gnuplot_edit_order =
148: qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
149: transparent grid samples
150: border align plotcolor plottype gridtype lmargin rmargin
151: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
152: pattern solid/;
153:
154: my $margin_choices = ['default',0..20];
155:
156: my %gnuplot_defaults =
157: (
158: alttag => {
159: default => 'dynamically generated plot',
160: test => $words_test,
161: description => 'Brief description of the plot',
162: edit_type => 'entry',
163: size => '40'
164: },
165: height => {
166: default => 300,
167: test => $int_test,
168: description => 'Height of image (pixels)',
169: edit_type => 'entry',
170: size => '10'
171: },
172: width => {
173: default => 400,
174: test => $int_test,
175: description => 'Width of image (pixels)',
176: edit_type => 'entry',
177: size => '10'
178: },
179: bgcolor => {
180: default => 'xffffff',
181: test => $color_test,
182: description => 'Background color of image (xffffff)',
183: edit_type => 'entry',
184: size => '10',
185: class => 'colorchooser'
186: },
187: fgcolor => {
188: default => 'x000000',
189: test => $color_test,
190: description => 'Foreground color of image (x000000)',
191: edit_type => 'entry',
192: size => '10',
193: class => 'colorchooser'
194: },
195: transparent => {
196: default => 'off',
197: test => $onoff_test,
198: description => 'Transparent image',
199: edit_type => 'onoff'
200: },
201: grid => {
202: default => 'on',
203: test => $onoff_test,
204: description => 'Display grid',
205: edit_type => 'onoff'
206: },
207: gridlayer => {
208: default => 'off',
209: test => $onoff_test,
210: description => 'Display grid front layer over filled boxes or filled curves',
211: edit_type => 'onoff'
212: },
213: box_border => {
214: default => 'noborder',
215: test => sub {$_[0]=~/^(noborder|border)$/},
216: description => 'Draw border for boxes',
217: edit_type => 'choice',
218: choices => ['border','noborder']
219: },
220: border => {
221: default => 'on',
222: test => $onoff_test,
223: description => 'Draw border around plot',
224: edit_type => 'onoff'
225: },
226: font => {
227: default => '9',
228: test => $sml_test,
229: description => 'Font size to use in web output (pts)',
230: edit_type => 'choice',
231: choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
232: },
233: fontface => {
234: default => 'sans-serif',
235: test => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
236: description => 'Type of font to use',
237: edit_type => 'choice',
238: choices => ['sans-serif','serif', 'classic']
239: },
240: samples => {
241: default => '100',
242: test => $int_test,
243: description => 'Number of samples for non-data plots',
244: edit_type => 'choice',
245: choices => ['100','200','500','1000','2000','5000']
246: },
247: align => {
248: default => 'middle',
249: test => sub {$_[0]=~/^(left|right|middle|center)$/},
250: description => 'Alignment for image in HTML',
251: edit_type => 'choice',
252: choices => ['left','right','middle']
253: },
254: texwidth => {
255: default => '93',
256: test => $int_test,
257: description => 'Width of plot when printed (mm)',
258: edit_type => 'entry',
259: size => '5'
260: },
261: texfont => {
262: default => '22',
263: test => $int_test,
264: description => 'Font size to use in TeX output (pts):',
265: edit_type => 'choice',
266: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
267: },
268: plotcolor => {
269: default => 'monochrome',
270: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
271: description => 'Color setting for printing:',
272: edit_type => 'choice',
273: choices => [qw/monochrome color colour/],
274: },
275: pattern => {
276: default => '',
277: test => $int_test,
278: description => 'Pattern value for boxes:',
279: edit_type => 'choice',
280: choices => [0,1,2,3,4,5,6]
281: },
282: solid => {
283: default => 0,
284: test => $real_test,
285: description => 'The density of fill style for boxes',
286: edit_type => 'entry',
287: size => '5'
288: },
289: fillstyle => {
290: default => 'empty',
291: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
292: description => 'Filled style for boxes:',
293: edit_type => 'choice',
294: choices => ['empty','solid','pattern']
295: },
296: plottype => {
297: default => 'Cartesian',
298: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
299: description => 'Plot type:',
300: edit_type => 'choice',
301: choices => ['Cartesian','Polar']
302: },
303: gridtype => {
304: default => 'Cartesian',
305: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
306: description => 'Grid type:',
307: edit_type => 'choice',
308: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
309: },
310: lmargin => {
311: default => 'default',
312: test => sub {$_[0]=~/^(default|\d+)$/},
313: description => 'Left margin width (pts):',
314: edit_type => 'choice',
315: choices => $margin_choices,
316: },
317: rmargin => {
318: default => 'default',
319: test => sub {$_[0]=~/^(default|\d+)$/},
320: description => 'Right margin width (pts):',
321: edit_type => 'choice',
322: choices => $margin_choices,
323: },
324: tmargin => {
325: default => 'default',
326: test => sub {$_[0]=~/^(default|\d+)$/},
327: description => 'Top margin width (pts):',
328: edit_type => 'choice',
329: choices => $margin_choices,
330: },
331: bmargin => {
332: default => 'default',
333: test => sub {$_[0]=~/^(default|\d+)$/},
334: description => 'Bottom margin width (pts):',
335: edit_type => 'choice',
336: choices => $margin_choices,
337: },
338: boxwidth => {
339: default => '',
340: test => $real_test,
341: description => 'Width of boxes, default is auto',
342: edit_type => 'entry',
343: size => '5'
344: },
345: major_ticscale => {
346: default => '1',
347: test => $real_test,
348: description => 'Size of major tic marks (plot coordinates)',
349: edit_type => 'entry',
350: size => '5'
351: },
352: minor_ticscale => {
353: default => '0.5',
354: test => $real_test,
355: description => 'Size of minor tic mark (plot coordinates)',
356: edit_type => 'entry',
357: size => '5'
358: },
359: );
360:
361: my %key_defaults =
362: (
363: title => {
364: default => '',
365: test => $words_test,
366: description => 'Title of key',
367: edit_type => 'entry',
368: size => '40'
369: },
370: box => {
371: default => 'off',
372: test => $onoff_test,
373: description => 'Draw a box around the key?',
374: edit_type => 'onoff'
375: },
376: pos => {
377: default => 'top right',
378: test => $key_pos_test,
379: description => 'Position of the key on the plot',
380: edit_type => 'choice',
381: choices => ['top left','top right','bottom left','bottom right',
382: 'outside','below']
383: }
384: );
385:
386: my %label_defaults =
387: (
388: xpos => {
389: default => 0,
390: test => $real_test,
391: description => 'X position of label (graph coordinates)',
392: edit_type => 'entry',
393: size => '10'
394: },
395: ypos => {
396: default => 0,
397: test => $real_test,
398: description => 'Y position of label (graph coordinates)',
399: edit_type => 'entry',
400: size => '10'
401: },
402: justify => {
403: default => 'left',
404: test => sub {$_[0]=~/^(left|right|center)$/},
405: description => 'justification of the label text on the plot',
406: edit_type => 'choice',
407: choices => ['left','right','center']
408: },
409: rotate => {
410: default => 0,
411: test => $real_test,
412: description => 'Rotation of label (degrees)',
413: edit_type => 'entry',
414: size => '10',
415: }
416: );
417:
418: my @tic_edit_order = ('location','mirror','start','increment','end',
419: 'minorfreq');
420: my %tic_defaults =
421: (
422: location => {
423: default => 'border',
424: test => sub {$_[0]=~/^(border|axis)$/},
425: description => 'Location of major tic marks',
426: edit_type => 'choice',
427: choices => ['border','axis']
428: },
429: mirror => {
430: default => 'on',
431: test => $onoff_test,
432: description => 'Mirror tics on opposite axis?',
433: edit_type => 'onoff'
434: },
435: start => {
436: default => '-10.0',
437: test => $real_test,
438: description => 'Start major tics at',
439: edit_type => 'entry',
440: size => '10'
441: },
442: increment => {
443: default => '1.0',
444: test => $real_test,
445: description => 'Place a major tic every',
446: edit_type => 'entry',
447: size => '10'
448: },
449: end => {
450: default => ' 10.0',
451: test => $real_test,
452: description => 'Stop major tics at ',
453: edit_type => 'entry',
454: size => '10'
455: },
456: minorfreq => {
457: default => '0',
458: test => $int_test,
459: description => 'Number of minor tics per major tic mark',
460: edit_type => 'entry',
461: size => '10'
462: },
463: );
464:
465: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');
466: my %axis_defaults =
467: (
468: color => {
469: default => 'x000000',
470: test => $color_test,
471: description => 'Color of grid lines (x000000)',
472: edit_type => 'entry',
473: size => '10',
474: class => 'colorchooser'
475: },
476: xmin => {
477: default => '-10.0',
478: test => $real_test,
479: description => 'Minimum x-value shown in plot',
480: edit_type => 'entry',
481: size => '10'
482: },
483: xmax => {
484: default => ' 10.0',
485: test => $real_test,
486: description => 'Maximum x-value shown in plot',
487: edit_type => 'entry',
488: size => '10'
489: },
490: ymin => {
491: default => '-10.0',
492: test => $real_test,
493: description => 'Minimum y-value shown in plot',
494: edit_type => 'entry',
495: size => '10'
496: },
497: ymax => {
498: default => ' 10.0',
499: test => $real_test,
500: description => 'Maximum y-value shown in plot',
501: edit_type => 'entry',
502: size => '10'
503: },
504: xformat => {
505: default => 'on',
506: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
507: description => 'X-axis number formatting',
508: edit_type => 'choice',
509: choices => ['on', 'off', '2e', '2f'],
510: },
511: yformat => {
512: default => 'on',
513: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
514: description => 'Y-axis number formatting',
515: edit_type => 'choice',
516: choices => ['on', 'off', '2e', '2f'],
517: },
518:
519: xzero => {
520: default => 'off',
521: test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
522: description => 'Show x-zero (y=0) axis',
523: edit_type => 'choice',
524: choices => ['off', 'line', 'thick-line', 'dotted'],
525: },
526:
527: yzero => {
528: default => 'off',
529: test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
530: description => 'Show y-zero (x=0) axis',
531: edit_type => 'choice',
532: choices => ['off', 'line', 'thick-line', 'dotted'],
533: },
534: );
535:
536: my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
537:
538: my %curve_defaults =
539: (
540: color => {
541: default => 'x000000',
542: test => $color_test,
543: description => 'Color of curve (x000000)',
544: edit_type => 'entry',
545: size => '10',
546: class => 'colorchooser'
547: },
548: name => {
549: default => '',
550: test => $words_test,
551: description => 'Name of curve to appear in key',
552: edit_type => 'entry',
553: size => '20'
554: },
555: linestyle => {
556: default => 'lines',
557: test => $linestyle_test,
558: description => 'Plot with:',
559: edit_type => 'choice',
560: choices => [keys(%linestyles)]
561: },
562: linewidth => {
563: default => 1,
564: test => $int_test,
565: description => 'Line width (may not apply to all plot styles)',
566: edit_type => 'choice',
567: choices => [1,2,3,4,5,6,7,8,9,10]
568: },
569: linetype => {
570: default => 'solid',
571: test => sub {$_[0]=~/^(solid|dashed)$/},
572: description => 'Line type (may not apply to all plot styles)',
573: edit_type => 'choice',
574: choices => ['solid', 'dashed']
575: },
576: pointsize => {
577: default => 1,
578: test => $pos_real_test,
579: description => 'Point size (may not apply to all plot styles)',
580: edit_type => 'entry',
581: size => '5'
582: },
583: pointtype => {
584: default => 1,
585: test => $int_test,
586: description => 'Point type (may not apply to all plot styles)',
587: edit_type => 'choice',
588: choices => [0,1,2,3,4,5,6]
589: },
590: limit => {
591: default => 'closed',
592: test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
593: description => 'Point to fill -- for filledcurves',
594: edit_type => 'choice',
595: choices => ['above', 'below', 'closed','x1','x2','y1','y2']
596: },
597: );
598:
599: ###################################################################
600: ## ##
601: ## parsing and edit rendering ##
602: ## ##
603: ###################################################################
604:
605: undef %Apache::lonplot::plot;
606: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
607:
608: sub start_gnuplot {
609: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
610: undef($title); undef($xlabel); undef($ylabel);
611: undef(@labels); undef(@curves);
612: undef(%xtics); undef(%ytics);
613: #
614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
615: my $result='';
616: &Apache::lonxml::register('Apache::lonplot',
617: ('title','xlabel','ylabel','key','axis','label','curve',
618: 'xtics','ytics'));
619: push (@Apache::lonxml::namespace,'lonplot');
620: if ($target eq 'web' || $target eq 'tex') {
621: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
622: $tagstack->[-1]);
623: } elsif ($target eq 'edit') {
624: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
625: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
626: \@gnuplot_edit_order)
627: .&Apache::edit::end_row()
628: .&Apache::edit::start_spanning_row();
629: } elsif ($target eq 'modified') {
630: my $constructtag=&Apache::edit::get_new_args
631: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
632:
633: if ($constructtag) {
634: #
635: # The color chooser does not prepent x to the color values
636: # Do that here:
637: #
638: foreach my $attribute ('bgcolor', 'fgcolor') {
639: my $value = $token->[2]{$attribute};
640: if (defined $value && !($value =~ /^x/)) {
641: $token->[2]{$attribute} = 'x' . $value;
642: }
643: }
644: $result = &Apache::edit::rebuild_tag($token);
645: }
646: }
647: return $result;
648: }
649:
650: sub end_gnuplot {
651: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
652: pop @Apache::lonxml::namespace;
653: &Apache::lonxml::deregister('Apache::lonplot',
654: ('title','xlabel','ylabel','key','axis','label','curve'));
655: my $result = '';
656: my $randnumber;
657: my $tmpdir =LONCAPA::tempdir(); # Where temporary files live:
658:
659: # need to call rand everytime start_script would evaluate, as the
660: # safe space rand number generator and the global rand generator
661: # are not separate
662: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
663: $target eq 'answer') {
664: $randnumber=int(rand(1000));
665: }
666: if ($target eq 'web' || $target eq 'tex') {
667: &check_inputs(); # Make sure we have all the data we need
668: ##
669: ## Determine filename
670: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
671: '_'.time.'_'.$$.$randnumber.'_plot';
672: ## Write the plot description to the file
673: &write_gnuplot_file($tmpdir,$filename,$target);
674: $filename = &escape($filename);
675: ## return image tag for the plot
676: if ($target eq 'web') {
677: $result .= <<"ENDIMAGE";
678: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
679: width = "$Apache::lonplot::plot{'width'}"
680: height = "$Apache::lonplot::plot{'height'}"
681: align = "$Apache::lonplot::plot{'align'}"
682: alt = "$Apache::lonplot::plot{'alttag'}" />
683: ENDIMAGE
684: } elsif ($target eq 'tex') {
685: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
686: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
687: #might be inside the safe space, register the URL for later
688: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
689: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
690: $result .= '\graphicspath{{'.$tmpdir.'}}'."\n";
691: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
692: }
693: } elsif ($target eq 'edit') {
694: $result.=&Apache::edit::tag_end($target,$token);
695: }
696: return $result;
697: }
698:
699:
700: ##--------------------------------------------------------------- xtics
701: sub start_xtics {
702: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
703: my $result='';
704: if ($target eq 'web' || $target eq 'tex') {
705: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
706: $tagstack->[-1]);
707: } elsif ($target eq 'edit') {
708: $result .= &Apache::edit::tag_start($target,$token,'xtics');
709: $result .= &edit_attributes($target,$token,\%tic_defaults,
710: \@tic_edit_order);
711: } elsif ($target eq 'modified') {
712: my $constructtag=&Apache::edit::get_new_args
713: ($token,$parstack,$safeeval,keys(%tic_defaults));
714: if ($constructtag) {
715: $result = &Apache::edit::rebuild_tag($token);
716: }
717: }
718: return $result;
719: }
720:
721: sub end_xtics {
722: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
723: my $result = '';
724: if ($target eq 'web' || $target eq 'tex') {
725: } elsif ($target eq 'edit') {
726: $result.=&Apache::edit::tag_end($target,$token);
727: }
728: return $result;
729: }
730:
731: ##--------------------------------------------------------------- ytics
732: sub start_ytics {
733: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
734: my $result='';
735: if ($target eq 'web' || $target eq 'tex') {
736: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
737: $tagstack->[-1]);
738: } elsif ($target eq 'edit') {
739: $result .= &Apache::edit::tag_start($target,$token,'ytics');
740: $result .= &edit_attributes($target,$token,\%tic_defaults,
741: \@tic_edit_order);
742: } elsif ($target eq 'modified') {
743: my $constructtag=&Apache::edit::get_new_args
744: ($token,$parstack,$safeeval,keys(%tic_defaults));
745: if ($constructtag) {
746: $result = &Apache::edit::rebuild_tag($token);
747: }
748: }
749: return $result;
750: }
751:
752: sub end_ytics {
753: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
754: my $result = '';
755: if ($target eq 'web' || $target eq 'tex') {
756: } elsif ($target eq 'edit') {
757: $result.=&Apache::edit::tag_end($target,$token);
758: }
759: return $result;
760: }
761:
762: ##-----------------------------------------------------------------font
763: my %font_properties =
764: (
765: 'classic' => {
766: face => 'classic',
767: file => 'DejaVuSansMono-Bold',
768: printname => 'Helvetica',
769: tex_no_file => 1,
770: },
771: 'sans-serif' => {
772: face => 'sans-serif',
773: file => 'DejaVuSans',
774: printname => 'DejaVuSans',
775: },
776: 'serif' => {
777: face => 'serif',
778: file => 'DejaVuSerif',
779: printname => 'DejaVuSerif',
780: },
781: );
782:
783: sub get_font {
784: my ($target) = @_;
785: my ($size, $selected_font);
786:
787: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
788: $selected_font = $font_properties{'classic'};
789: if ( $Apache::lonplot::plot{'font'} eq 'small') {
790: $size = '5';
791: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
792: $size = '9';
793: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
794: $size = '11';
795: } else {
796: $size = '9';
797: }
798: } else {
799: $size = $Apache::lonplot::plot{'font'};
800: $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
801: }
802: if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
803: # $selected_font = $font_properties{'classic'};
804: $size = $Apache::lonplot::plot{'texfont'};
805: }
806: return ($size, $selected_font);
807: }
808:
809: ##----------------------------------------------------------------- key
810: sub start_key {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
812: my $result='';
813: if ($target eq 'web' || $target eq 'tex') {
814: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
815: $tagstack->[-1]);
816: } elsif ($target eq 'edit') {
817: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
818: $result .= &edit_attributes($target,$token,\%key_defaults);
819: } elsif ($target eq 'modified') {
820: my $constructtag=&Apache::edit::get_new_args
821: ($token,$parstack,$safeeval,keys(%key_defaults));
822: if ($constructtag) {
823: $result = &Apache::edit::rebuild_tag($token);
824: }
825: }
826: return $result;
827: }
828:
829: sub end_key {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
831: my $result = '';
832: if ($target eq 'web' || $target eq 'tex') {
833: } elsif ($target eq 'edit') {
834: $result.=&Apache::edit::tag_end($target,$token);
835: }
836: return $result;
837: }
838:
839: sub parse_label {
840: my ($target,$text) = @_;
841: my $parser=HTML::LCParser->new(\$text);
842: my $result;
843: while (my $token=$parser->get_token) {
844: if ($token->[0] eq 'S') {
845: if ($token->[1] eq 'sub') {
846: $result .= '_{';
847: } elsif ($token->[1] eq 'sup') {
848: $result .= '^{';
849: } else {
850: $result .= $token->[4];
851: }
852: } elsif ($token->[0] eq 'E') {
853: if ($token->[1] eq 'sub'
854: || $token->[1] eq 'sup') {
855: $result .= '}';
856: } else {
857: $result .= $token->[2];
858: }
859: } elsif ($token->[0] eq 'T') {
860: $result .= &replace_entities($target,$token->[1]);
861: }
862: }
863: return $result;
864: }
865:
866: #
867: # Note that there are severe restrictions on font selection in the
868: # ps driver now. later in life Gnuplot is supposed to support
869: # utf-8 fonts in the posts script driver. When this happens,
870: # the tex entries with comments that include the word <FIX>
871: # should be changed to print the correct glyphs rather than some
872: # approximation or fallback of what is intended.
873:
874: my %lookup =
875: ( # Greek alphabet:
876:
877: '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
878: '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
879: '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
880: '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
881: '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
882: '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
883: '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
884: '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
885: '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
886: '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
887: '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
888: '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
889: '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
890: '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
891: '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
892: '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
893: '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
894: '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
895: '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
896: '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
897: '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
898: '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
899: '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
900: '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
901: '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
902: '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
903: '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
904: '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
905: '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
906: '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
907: '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
908: '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
909: '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
910: '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
911: '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
912: '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
913: '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
914: '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
915: '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
916: '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
917: '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
918: '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
919: '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
920: '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
921: '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
922: '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
923: '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
924: '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
925: '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
926: '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
927: '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
928:
929:
930: # Punctuation:
931:
932: '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
933: '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
934: '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
935: '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
936: '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
937: '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
938: '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
939: '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
940: '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
941: '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
942: '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX>
943: '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX>
944: '#139' => {'tex' => '<', 'web' => '<'},
945: '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX>
946: '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
947: '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
948: '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX>
949: '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX>
950: '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
951: '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash
952: '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
953: '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'},
954: '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark
955:
956: # Accented letters, and other furreign language glyphs.
957:
958: '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
959: '#155' => {'tex' => '>', 'web' => '\76'}, # >
960: '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX>
961: '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX>
962: '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
963: '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
964: '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
965: '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
966: '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX>
967: '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
968: '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
969: '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
970: '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
971: '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
972: '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
973: '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
974: '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
975: '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen.
976: '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
977: '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
978: '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..`
979: '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
980: '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
981: '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
982: '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent.
983: '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
984: '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
985: '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot
986: '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
987: '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
988: '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal.
989: '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
990: '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
991: '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
992: '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
993: '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
994: '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
995: '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
996: '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
997: '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
998: '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
999: '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
1000: '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
1001: '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla
1002: '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave.
1003: '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent.
1004: '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex.
1005: '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut.
1006: '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent.
1007: '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent.
1008: '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex.
1009: '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut.
1010: '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth.
1011: '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan).
1012: '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave.
1013: '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute.
1014: '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex.
1015: '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde.
1016: '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut.
1017: '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol.
1018: '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash.
1019: '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave.
1020: '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute.
1021: '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex.
1022: '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut.
1023: '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute.
1024: '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn.
1025: '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s.
1026: '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave.
1027: '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave.
1028: '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex.
1029: '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde.
1030: '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut
1031: '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top.
1032: '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature.
1033: '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla
1034: '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave.
1035: '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute.
1036: '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex.
1037: '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut.
1038: '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave.
1039: '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute.
1040: '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex.
1041: '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut.
1042: '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth.
1043: '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde.
1044: '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave.
1045: '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute.
1046: '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex.
1047: '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde.
1048: '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut.
1049: '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol
1050: '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed.
1051: '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave.
1052: '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute.
1053: '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex.
1054: '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut.
1055: '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent.
1056: '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic).
1057: '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut.
1058:
1059: # Latin extended A entities:
1060:
1061: '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature.
1062: '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.
1063: '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable.
1064: '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable.
1065: '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable.
1066:
1067: # Latin extended B.
1068:
1069: '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook.
1070:
1071: # Standalone accents:
1072:
1073: '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex.
1074: '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde.
1075:
1076: # General punctuation. We're not able to make a distinction between
1077: # the various length spacings in the print version. (e.g. en/em/thin).
1078: # the various joiners will be empty strings in the print version too.
1079:
1080:
1081: '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space.
1082: '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space.
1083: '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space.
1084: '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner.
1085: '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner.
1086: '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark
1087: '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark.
1088: '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash.
1089: '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash.
1090: '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote.
1091: '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote.
1092: '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote.
1093: '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote.
1094: '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote.
1095: '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote.
1096: '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
1097: '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
1098: '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet.
1099: '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses.
1100: '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille.
1101: '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime.
1102: '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime.
1103: '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote.
1104: '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote.
1105: '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline.
1106: '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash.
1107: '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
1108:
1109: # Letter like symbols.
1110:
1111: '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol
1112: '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part
1113: '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part.
1114: '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol.
1115: '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef.
1116:
1117: # Arrows of various types and directions.
1118: '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <--
1119: '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow.
1120: '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # -->
1121: '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow.
1122: '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <-->
1123: '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right.
1124: '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <==
1125: '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow.
1126: '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==>
1127: '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow.
1128: '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==>
1129:
1130: # Mathematical operators. For some of these we do the best we can in printing.
1131:
1132: '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all.
1133: '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative
1134: '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists.
1135: '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set.
1136: '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g.
1137: '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set.
1138: '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of
1139: '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member
1140: '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product
1141: '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of.
1142: '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign.
1143: '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # *
1144: '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root.
1145: '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to.
1146: '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity.
1147: '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle .
1148: '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and.
1149: '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or.
1150: '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection.
1151: '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union.
1152: '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral.
1153:
1154: # Some gnuplot guru will have to explain to me why the next three
1155: # require the extra slashes... else they print very funkily.
1156:
1157: '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots.
1158: '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to.
1159: '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with.
1160:
1161: '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to.
1162: '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to.
1163: '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to.
1164: '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to.
1165: '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to
1166: '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of.
1167: '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of.
1168: '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of.
1169: '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal.
1170: '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal
1171: '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside
1172: '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times.
1173: '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular.
1174: '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator.
1175:
1176: # Misc. technical symbols:
1177:
1178: '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling.
1179: '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling.
1180: '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor.
1181: '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor.
1182:
1183: # The gnuplot png font evidently does not have the big angle brackets at
1184: # positions 0x2329, 0x232a so use ordinary brackets.
1185:
1186: '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket.
1187: '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket.
1188:
1189: # Gemoetric shapes.
1190:
1191: '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge.
1192:
1193: # Misc. symbols
1194:
1195: '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"},
1196: '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"},
1197: '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"},
1198: '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"}
1199:
1200: );
1201:
1202:
1203: sub replace_entities {
1204: my ($target,$text) = @_;
1205: $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
1206: while (my ($re, $replace) = each(%lookup)) {
1207: my $repl = $replace->{$target};
1208: $text =~ s/&$re;/$replace->{$target}/g;
1209: }
1210: $text =~ s{(&)}{\\\\$1}g;
1211: return $text;
1212: }
1213:
1214: ##------------------------------------------------------------------- title
1215: sub start_title {
1216: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1217: my $result='';
1218: if ($target eq 'web' || $target eq 'tex') {
1219: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
1220: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1221: $title =~ s/\n/ /g;
1222: if (length($title) > $max_str_len) {
1223: $title = substr($title,0,$max_str_len);
1224: }
1225: $title = &parse_label($target,$title);
1226: } elsif ($target eq 'edit') {
1227: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1228: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
1229: $result.=&Apache::edit::editline('',$text,'',60);
1230: } elsif ($target eq 'modified') {
1231: $result.=&Apache::edit::rebuild_tag($token);
1232: $result.=&Apache::edit::modifiedfield("/title",$parser);
1233: }
1234: return $result;
1235: }
1236:
1237: sub end_title {
1238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1239: my $result = '';
1240: if ($target eq 'web' || $target eq 'tex') {
1241: } elsif ($target eq 'edit') {
1242: $result.=&Apache::edit::tag_end($target,$token);
1243: }
1244: return $result;
1245: }
1246: ##------------------------------------------------------------------- xlabel
1247: sub start_xlabel {
1248: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1249: my $result='';
1250: if ($target eq 'web' || $target eq 'tex') {
1251: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1252: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1253: $xlabel =~ s/\n/ /g;
1254: if (length($xlabel) > $max_str_len) {
1255: $xlabel = substr($xlabel,0,$max_str_len);
1256: }
1257: $xlabel = &parse_label($target,$xlabel);
1258: } elsif ($target eq 'edit') {
1259: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1260: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1261: $result.=&Apache::edit::editline('',$text,'',60);
1262: } elsif ($target eq 'modified') {
1263: $result.=&Apache::edit::rebuild_tag($token);
1264: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1265: }
1266: return $result;
1267: }
1268:
1269: sub end_xlabel {
1270: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1271: my $result = '';
1272: if ($target eq 'web' || $target eq 'tex') {
1273: } elsif ($target eq 'edit') {
1274: $result.=&Apache::edit::tag_end($target,$token);
1275: }
1276: return $result;
1277: }
1278:
1279: ##------------------------------------------------------------------- ylabel
1280: sub start_ylabel {
1281: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1282: my $result='';
1283: if ($target eq 'web' || $target eq 'tex') {
1284: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1285: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1286: $ylabel =~ s/\n/ /g;
1287: if (length($ylabel) > $max_str_len) {
1288: $ylabel = substr($ylabel,0,$max_str_len);
1289: }
1290: $ylabel = &parse_label($target,$ylabel);
1291: } elsif ($target eq 'edit') {
1292: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1293: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1294: $result .= &Apache::edit::editline('',$text,'',60);
1295: } elsif ($target eq 'modified') {
1296: $result.=&Apache::edit::rebuild_tag($token);
1297: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1298: }
1299: return $result;
1300: }
1301:
1302: sub end_ylabel {
1303: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1304: my $result = '';
1305: if ($target eq 'web' || $target eq 'tex') {
1306: } elsif ($target eq 'edit') {
1307: $result.=&Apache::edit::tag_end($target,$token);
1308: }
1309: return $result;
1310: }
1311:
1312: ##------------------------------------------------------------------- label
1313: sub start_label {
1314: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1315: my $result='';
1316: if ($target eq 'web' || $target eq 'tex') {
1317: my %label;
1318: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1319: $tagstack->[-1]);
1320: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1321: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1322: $text =~ s/\n/ /g;
1323: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
1324: $label{'text'} = &parse_label($target,$text);
1325: push(@labels,\%label);
1326: } elsif ($target eq 'edit') {
1327: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1328: $result .= &edit_attributes($target,$token,\%label_defaults);
1329: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1330: $result .= &Apache::edit::end_row().
1331: &Apache::edit::start_spanning_row().
1332: &Apache::edit::editline('',$text,'',60);
1333: } elsif ($target eq 'modified') {
1334: &Apache::edit::get_new_args
1335: ($token,$parstack,$safeeval,keys(%label_defaults));
1336: $result.=&Apache::edit::rebuild_tag($token);
1337: $result.=&Apache::edit::modifiedfield("/label",$parser);
1338: }
1339: return $result;
1340: }
1341:
1342: sub end_label {
1343: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1344: my $result = '';
1345: if ($target eq 'web' || $target eq 'tex') {
1346: } elsif ($target eq 'edit') {
1347: $result.=&Apache::edit::tag_end($target,$token);
1348: }
1349: return $result;
1350: }
1351:
1352: ##------------------------------------------------------------------- curve
1353: sub start_curve {
1354: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1355: my $result='';
1356: &Apache::lonxml::register('Apache::lonplot',('function','data'));
1357: push (@Apache::lonxml::namespace,'curve');
1358: if ($target eq 'web' || $target eq 'tex') {
1359: my %curve;
1360: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1361: $tagstack->[-1]);
1362: push (@curves,\%curve);
1363: } elsif ($target eq 'edit') {
1364: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1365: $result .= &edit_attributes($target,$token,\%curve_defaults,
1366: \@curve_edit_order)
1367: .&Apache::edit::end_row()
1368: .&Apache::edit::start_spanning_row();
1369:
1370: } elsif ($target eq 'modified') {
1371: my $constructtag=&Apache::edit::get_new_args
1372: ($token,$parstack,$safeeval,keys(%curve_defaults));
1373: if ($constructtag) {
1374: #
1375: # Fix up the color attribute as jcolor does not prepend an x
1376: #
1377: my $value = $token->[2]{'color'};
1378: if (defined $value && !($value =~ /^x/)) {
1379: $token->[2]{'color'} = 'x' . $value;
1380: }
1381: $result = &Apache::edit::rebuild_tag($token);
1382: }
1383: }
1384: return $result;
1385: }
1386:
1387: sub end_curve {
1388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1389: my $result = '';
1390: pop @Apache::lonxml::namespace;
1391: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1392: if ($target eq 'web' || $target eq 'tex') {
1393: } elsif ($target eq 'edit') {
1394: $result.=&Apache::edit::tag_end($target,$token);
1395: }
1396: return $result;
1397: }
1398:
1399: ##------------------------------------------------------------ curve function
1400: sub start_function {
1401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1402: my $result='';
1403: if ($target eq 'web' || $target eq 'tex') {
1404: if (exists($curves[-1]->{'data'})) {
1405: &Apache::lonxml::warning
1406: ('Use of the <b>curve function</b> tag precludes use of '.
1407: ' the <b>curve data</b> tag. '.
1408: 'The curve data tag will be omitted in favor of the '.
1409: 'curve function declaration.');
1410: delete $curves[-1]->{'data'} ;
1411: }
1412: my $function = &Apache::lonxml::get_all_text("/function",$parser,
1413: $style);
1414: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
1415: $function=~s/\^/\*\*/gs;
1416: $curves[-1]->{'function'} = $function;
1417: } elsif ($target eq 'edit') {
1418: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1419: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1420: $result .= &Apache::edit::editline('',$text,'',60);
1421: } elsif ($target eq 'modified') {
1422: $result.=&Apache::edit::rebuild_tag($token);
1423: $result.=&Apache::edit::modifiedfield("/function",$parser);
1424: }
1425: return $result;
1426: }
1427:
1428: sub end_function {
1429: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1430: my $result = '';
1431: if ($target eq 'web' || $target eq 'tex') {
1432: } elsif ($target eq 'edit') {
1433: $result .= &Apache::edit::end_table();
1434: }
1435: return $result;
1436: }
1437:
1438: ##------------------------------------------------------------ curve data
1439: sub start_data {
1440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1441: my $result='';
1442: if ($target eq 'web' || $target eq 'tex') {
1443: if (exists($curves[-1]->{'function'})) {
1444: &Apache::lonxml::warning
1445: ('Use of the <b>curve function</b> tag precludes use of '.
1446: ' the <b>curve data</b> tag. '.
1447: 'The curve function tag will be omitted in favor of the '.
1448: 'curve data declaration.');
1449: delete($curves[-1]->{'function'});
1450: }
1451: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1452: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1453: # Deal with cases where we're given an array...
1454: if ($datatext =~ /^\@/) {
1455: $datatext = &Apache::run::run('return "'.$datatext.'"',
1456: $safeeval,1);
1457: }
1458: $datatext =~ s/\s+/ /g;
1459: # Need to do some error checking on the @data array -
1460: # make sure it's all numbers and make sure each array
1461: # is of the same length.
1462: my @data;
1463: if ($datatext =~ /,/) { # comma deliminated
1464: @data = split /,/,$datatext;
1465: } else { # Assume it's space separated.
1466: @data = split / /,$datatext;
1467: }
1468: for (my $i=0;$i<=$#data;$i++) {
1469: # Check that it's non-empty
1470: if (! defined($data[$i])) {
1471: &Apache::lonxml::warning(
1472: 'undefined curve data value. Replacing with '.
1473: ' pi/e = 1.15572734979092');
1474: $data[$i] = 1.15572734979092;
1475: }
1476: # Check that it's a number
1477: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
1478: &Apache::lonxml::warning(
1479: 'Bad curve data value of '.$data[$i].' Replacing with '.
1480: ' pi/e = 1.15572734979092');
1481: $data[$i] = 1.15572734979092;
1482: }
1483: }
1484: # complain if the number of data points is not the same as
1485: # in previous sets of data.
1486: if (($curves[-1]->{'data'}) && ($#data != $#{$curves[-1]->{'data'}->[0]})){
1487: &Apache::lonxml::warning
1488: ('Number of data points is not consistent with previous '.
1489: 'number of data points');
1490: }
1491: push @{$curves[-1]->{'data'}},\@data;
1492: } elsif ($target eq 'edit') {
1493: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1494: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1495: $result .= &Apache::edit::editline('',$text,'',60);
1496: } elsif ($target eq 'modified') {
1497: $result.=&Apache::edit::rebuild_tag($token);
1498: $result.=&Apache::edit::modifiedfield("/data",$parser);
1499: }
1500: return $result;
1501: }
1502:
1503: sub end_data {
1504: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1505: my $result = '';
1506: if ($target eq 'web' || $target eq 'tex') {
1507: } elsif ($target eq 'edit') {
1508: $result .= &Apache::edit::end_table();
1509: }
1510: return $result;
1511: }
1512:
1513: ##------------------------------------------------------------------- axis
1514: sub start_axis {
1515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1516: my $result='';
1517: if ($target eq 'web' || $target eq 'tex') {
1518: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1519: $tagstack->[-1]);
1520: } elsif ($target eq 'edit') {
1521: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1522: $result .= &edit_attributes($target,$token,\%axis_defaults,
1523: \@axis_edit_order);
1524: } elsif ($target eq 'modified') {
1525: my $constructtag=&Apache::edit::get_new_args
1526: ($token,$parstack,$safeeval,keys(%axis_defaults));
1527:
1528: if ($constructtag) {
1529: #
1530: # Fix up the color attribute since jchooser does not
1531: # prepend an x to the color:
1532: #
1533: my $value = $token->[2]{'color'};
1534: if (defined $value && !($value =~ /^x/)) {
1535: $token->[2]{'color'} = 'x' . $value;
1536: }
1537:
1538: $result = &Apache::edit::rebuild_tag($token);
1539: }
1540: }
1541: return $result;
1542: }
1543:
1544: sub end_axis {
1545: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1546: my $result = '';
1547: if ($target eq 'web' || $target eq 'tex') {
1548: } elsif ($target eq 'edit') {
1549: $result.=&Apache::edit::tag_end($target,$token);
1550: } elsif ($target eq 'modified') {
1551: }
1552: return $result;
1553: }
1554:
1555: ###################################################################
1556: ## ##
1557: ## Utility Functions ##
1558: ## ##
1559: ###################################################################
1560:
1561: ##----------------------------------------------------------- set_defaults
1562: sub set_defaults {
1563: my ($var,$defaults) = @_;
1564: my $key;
1565: foreach $key (keys(%$defaults)) {
1566: $var->{$key} = $defaults->{$key}->{'default'};
1567: }
1568: }
1569:
1570: ##------------------------------------------------------------------- misc
1571: sub get_attributes{
1572: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1573: foreach my $attr (keys(%{$defaults})) {
1574: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1575: $values->{$attr} =
1576: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1577: } else {
1578: $values->{$attr} =
1579: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1580: }
1581: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1582: $values->{$attr} = $defaults->{$attr}->{'default'};
1583: next;
1584: }
1585: my $test = $defaults->{$attr}->{'test'};
1586: if (! &$test($values->{$attr})) {
1587: &Apache::lonxml::warning
1588: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1589: .$defaults->{$attr}->{'default'} );
1590: $values->{$attr} = $defaults->{$attr}->{'default'};
1591: }
1592: }
1593: return ;
1594: }
1595:
1596: ##------------------------------------------------------- write_gnuplot_file
1597: sub write_gnuplot_file {
1598: my ($tmpdir,$filename,$target)= @_;
1599: my ($fontsize, $font_properties) = &get_font($target);
1600: my $gnuplot_input = '';
1601: my $curve;
1602: #
1603: # Check to be sure we do not have any empty curves
1604: my @curvescopy;
1605: foreach my $curve (@curves) {
1606: if (exists($curve->{'function'})) {
1607: if ($curve->{'function'} !~ /^\s*$/) {
1608: push(@curvescopy,$curve);
1609: }
1610: } elsif (exists($curve->{'data'})) {
1611: foreach my $data (@{$curve->{'data'}}) {
1612: if (scalar(@$data) > 0) {
1613: push(@curvescopy,$curve);
1614: last;
1615: }
1616: }
1617: }
1618: }
1619: @curves = @curvescopy;
1620: # Collect all the colors
1621: my @Colors;
1622: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1623: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1624: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1625: foreach $curve (@curves) {
1626: push @Colors, ($curve->{'color'} ne '' ?
1627: $curve->{'color'} :
1628: $Apache::lonplot::plot{'fgcolor'} );
1629: }
1630:
1631: # set term
1632: if ($target eq 'web') {
1633: $gnuplot_input .= 'set terminal png enhanced nocrop ';
1634: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1635: $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1636: '/'.$font_properties->{'file'}.'.ttf" ';
1637: $gnuplot_input .= $fontsize;
1638: $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1639: $gnuplot_input .= "@Colors\n";
1640: # set output
1641: $gnuplot_input .= "set output\n";
1642: } elsif ($target eq 'tex') {
1643: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} dash ";
1644: if (!$font_properties->{'tex_no_file'}) {
1645: $gnuplot_input .=
1646: 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1647: '/'.$font_properties->{'file'}.'.pfb" ';
1648: }
1649: $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
1650: $gnuplot_input .= $fontsize;
1651: $gnuplot_input .= "\nset output \"".$tmpdir.
1652: &unescape($filename).".eps\"\n";
1653: $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
1654:
1655: }
1656: # cartesian or polar plot?
1657: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1658: $gnuplot_input .= 'set polar'.$/;
1659: } else {
1660: # Assume Cartesian
1661: }
1662: # cartesian or polar grid?
1663: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
1664: $gnuplot_input .= 'set grid polar'.$/;
1665: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
1666: $gnuplot_input .= 'set logscale x'.$/;
1667: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
1668: $gnuplot_input .= 'set logscale y'.$/;
1669: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
1670: $gnuplot_input .= 'set logscale x'.$/;
1671: $gnuplot_input .= 'set logscale y'.$/;
1672: } else {
1673: # Assume Cartesian
1674: }
1675: # solid or pattern for boxes?
1676: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1677: $gnuplot_input .= 'set style fill solid '.
1678: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1679: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1680: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1681: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1682: }
1683: # margin
1684: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1685: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1686: }
1687: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1688: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1689: }
1690: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1691: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1692: }
1693: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1694: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1695: }
1696:
1697: # tic scales
1698: if ($version > 4) {
1699: $gnuplot_input .= 'set tics scale '.
1700: $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1701: } else {
1702: $gnuplot_input .= 'set ticscale '.
1703: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1704: }
1705: #boxwidth
1706: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1707: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1708: }
1709: # gridlayer
1710: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1711: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1712:
1713: # grid
1714: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1715: # border
1716: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1717: 'set border'.$/ :
1718: 'set noborder'.$/ );
1719: # sampling rate for non-data curves
1720: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1721: # title, xlabel, ylabel
1722: # titles
1723: my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
1724: my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
1725:
1726: if ($target eq 'tex') {
1727: $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
1728: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
1729: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
1730: } else {
1731: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1732: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
1733: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
1734: }
1735: # tics
1736: if (%xtics) {
1737: $gnuplot_input .= "set xtics $xtics{'location'} ";
1738: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1739: $gnuplot_input .= "$xtics{'start'}, ";
1740: $gnuplot_input .= "$xtics{'increment'}, ";
1741: $gnuplot_input .= "$xtics{'end'} ";
1742: if ($target eq 'tex') {
1743: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso 8859-1 enc.
1744: }
1745: $gnuplot_input .= "\n";
1746: if ($xtics{'minorfreq'} != 0) {
1747: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1748: }
1749: } else {
1750: if ($target eq 'tex') {
1751: $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc
1752: }
1753: }
1754: if (%ytics) {
1755: $gnuplot_input .= "set ytics $ytics{'location'} ";
1756: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1757: $gnuplot_input .= "$ytics{'start'}, ";
1758: $gnuplot_input .= "$ytics{'increment'}, ";
1759: $gnuplot_input .= "$ytics{'end'} ";
1760: if ($target eq 'tex') {
1761: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding.
1762: }
1763: $gnuplot_input .= "\n";
1764: if ($ytics{'minorfreq'} != 0) {
1765: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1766: }
1767: } else {
1768: if ($target eq 'tex') {
1769: $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc.
1770: }
1771: }
1772: # axis
1773: if (%axis) {
1774: if ($axis{'xformat'} ne 'on') {
1775: $gnuplot_input .= "set format x ";
1776: if ($axis{'xformat'} eq 'off') {
1777: $gnuplot_input .= "\"\"\n";
1778: } else {
1779: $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
1780: }
1781: }
1782: if ($axis{'yformat'} ne 'on') {
1783: $gnuplot_input .= "set format y ";
1784: if ($axis{'yformat'} eq 'off') {
1785: $gnuplot_input .= "\"\"\n";
1786: } else {
1787: $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
1788: }
1789: }
1790: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1791: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1792: if ($axis{'xzero'} ne 'off') {
1793: $gnuplot_input .= "set xzeroaxis ";
1794: if ($axis{'xzero'} eq 'line' || $axis{'xzero'} eq 'thick-line') {
1795: $gnuplot_input .= "lt -1 ";
1796: if ($axis{'xzero'} eq 'thick-line') {
1797: $gnuplot_input .= "lw 3 ";
1798: }
1799: }
1800: $gnuplot_input .= "\n";
1801: }
1802: if ($axis{'yzero'} ne 'off') {
1803: $gnuplot_input .= "set yzeroaxis ";
1804: if ($axis{'yzero'} eq 'line' || $axis{'yzero'} eq 'thick-line') {
1805: $gnuplot_input .= "lt -1 ";
1806: if ($axis{'yzero'} eq 'thick-line') {
1807: $gnuplot_input .= "lw 3 ";
1808: }
1809: }
1810: $gnuplot_input .= "\n";
1811: }
1812: }
1813: # Key
1814: if (%key) {
1815: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1816: if ($key{'title'} ne '') {
1817: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1818: }
1819: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1820: } else {
1821: $gnuplot_input .= 'set nokey'.$/;
1822: }
1823: # labels
1824: my $label;
1825: foreach $label (@labels) {
1826: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1827: $label->{'xpos'}.','.$label->{'ypos'};
1828: if ($label->{'rotate'} ne '') {
1829: $gnuplot_input .= ' rotate by '.$label->{'rotate'};
1830: }
1831: $gnuplot_input .= ' '.$label->{'justify'};
1832:
1833: if ($target eq 'tex') {
1834: $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
1835: }
1836: $gnuplot_input .= $/;
1837: }
1838: if ($target eq 'tex') {
1839: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1840: $gnuplot_input .="\n";
1841: }
1842: # curves
1843: #
1844: # Each curve will have its very own linestyle.
1845: # (This should work just fine in web rendition I think).
1846: # The line_xxx variables will hold the elements of the line style.
1847: # type (solid/dashed), color, width
1848: #
1849: my $linestyle_index = 50;
1850: my $line_width = '';
1851:
1852: my $plot_command;
1853: my $plot_type;
1854:
1855: for (my $i = 0;$i<=$#curves;$i++) {
1856: $curve = $curves[$i];
1857: $plot_command.= ', ' if ($i > 0);
1858: if ($target eq 'tex') {
1859: $curve->{'linewidth'} *= 2;
1860: }
1861: $line_width = $curve->{'linewidth'};
1862: if (exists($curve->{'function'})) {
1863: $plot_type =
1864: $curve->{'function'}.' title "'.
1865: $curve->{'name'}.'" with '.
1866: $curve->{'linestyle'};
1867: } elsif (exists($curve->{'data'})) {
1868: # Store data values in $datatext
1869: my $datatext = '';
1870: # get new filename
1871: my $datafilename = "$tmpdir/$filename.data.$i";
1872: my $fh=Apache::File->new(">$datafilename");
1873: # Compile data
1874: my @Data = @{$curve->{'data'}};
1875: my @Data0 = @{$Data[0]};
1876: for (my $i =0; $i<=$#Data0; $i++) {
1877: my $dataset;
1878: foreach $dataset (@Data) {
1879: $datatext .= $dataset->[$i] . ' ';
1880: }
1881: $datatext .= $/;
1882: }
1883: # write file
1884: print $fh $datatext;
1885: close($fh);
1886: # generate gnuplot text
1887: $plot_type = '"'.$datafilename.'" title "'.
1888: $curve->{'name'}.'" with '.
1889: $curve->{'linestyle'};
1890: }
1891: my $pointtype = '';
1892: my $pointsize = '';
1893:
1894: if (($curve->{'linestyle'} eq 'points') ||
1895: ($curve->{'linestyle'} eq 'linespoints') ||
1896: ($curve->{'linestyle'} eq 'errorbars') ||
1897: ($curve->{'linestyle'} eq 'xerrorbars') ||
1898: ($curve->{'linestyle'} eq 'yerrorbars') ||
1899: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1900:
1901: $pointtype =' pointtype '.$curve->{'pointtype'};
1902: $pointsize =' pointsize '.$curve->{'pointsize'};
1903: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1904: $plot_command.= ' '.$curve->{'limit'};
1905: }
1906:
1907: #elsif ($curve->{'linetype'} ne '' &&
1908: # $curve->{'linestyle'} eq 'lines')
1909: #
1910: #
1911: # $plot_command.= ' linetype ';
1912: # $plot_command.= $linetypes{$curve->{'linetype'}};
1913: # $plot_command.= ' linecolor rgb "';
1914: # # convert color from xaaaaaa to #aaaaaa
1915: # $curve->{'color'} =~ s/^x/#/;
1916: # $plot_command.= $curve->{'color'}.'"';
1917: # }
1918:
1919: # Figure out the linestyle:
1920:
1921: my $lt = $curve->{'linetype'} ne '' ? $curve->{'linetype'}
1922: : 'solid'; # Line type defaults to solid.
1923: # The mapping of lt -> the actual gnuplot line type depends on the target:
1924:
1925: if ($target eq 'tex') {
1926: $lt = $ps_linetypes{$lt};
1927: } else {
1928: $lt = $linetypes{$lt}
1929: }
1930:
1931: my $color = $curve->{'color'};
1932: $color =~ s/^x/#/; # Convert xhex color -> #hex color.
1933:
1934: my $style_command = "set style line $linestyle_index $pointtype $pointsize linetype $lt linewidth $line_width lc rgb '$color'\n";
1935: $gnuplot_input .= $style_command;
1936:
1937: $plot_command.= " ls $linestyle_index";
1938: $gnuplot_input .= 'plot ' . $plot_type . ' ' . $plot_command . "\n";
1939: $linestyle_index++; # Each curve get a unique linestyle.
1940: }
1941: # Write the output to a file.
1942: open (my $fh,">$tmpdir$filename.data");
1943: binmode($fh, ":utf8");
1944: print $fh $gnuplot_input;
1945: close($fh);
1946: # That's all folks.
1947: return ;
1948: }
1949:
1950: #---------------------------------------------- check_inputs
1951: sub check_inputs {
1952: ## Note: no inputs, no outputs - this acts only on global variables.
1953: ## Make sure we have all the input we need:
1954: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1955: if (! %key ) {} # No key for this plot, thats okay
1956: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1957: if (! defined($title )) {} # No title for this plot, thats okay
1958: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1959: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1960: if ($#labels < 0) { } # No labels for this plot, thats okay
1961: if ($#curves < 0) {
1962: &Apache::lonxml::warning("No curves specified for plot!!!!");
1963: return '';
1964: }
1965: my $curve;
1966: foreach $curve (@curves) {
1967: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1968: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1969: return '';
1970: }
1971: }
1972: }
1973:
1974: #------------------------------------------------ make_edit
1975: sub edit_attributes {
1976: my ($target,$token,$defaults,$keys) = @_;
1977: my ($result,@keys);
1978: if ($keys && ref($keys) eq 'ARRAY') {
1979: @keys = @$keys;
1980: } else {
1981: @keys = sort(keys(%$defaults));
1982: }
1983: foreach my $attr (@keys) {
1984: # append a ' ' to the description if it doesn't have one already.
1985: my $description = $defaults->{$attr}->{'description'};
1986: $description .= ' ' if ($description !~ / $/);
1987: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1988: $result .= &Apache::edit::text_arg
1989: ($description,$attr,$token,
1990: $defaults->{$attr}->{'size'},
1991: $defaults->{$attr}->{'class'});
1992: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1993: $result .= &Apache::edit::select_or_text_arg
1994: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1995: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1996: $result .= &Apache::edit::select_or_text_arg
1997: ($description,$attr,['on','off'],$token);
1998: }
1999: $result .= '<br />';
2000: }
2001: return $result;
2002: }
2003:
2004:
2005: ###################################################################
2006: ## ##
2007: ## Insertion functions for editing plots ##
2008: ## ##
2009: ###################################################################
2010:
2011: sub insert_gnuplot {
2012: my $result = '';
2013: # plot attributes
2014: $result .= "\n<gnuplot ";
2015: foreach my $attr (keys(%gnuplot_defaults)) {
2016: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
2017: }
2018: $result .= ">";
2019: # Add the components (most are commented out for simplicity)
2020: # $result .= &insert_key();
2021: # $result .= &insert_axis();
2022: # $result .= &insert_title();
2023: # $result .= &insert_xlabel();
2024: # $result .= &insert_ylabel();
2025: $result .= &insert_curve();
2026: # close up the <gnuplot>
2027: $result .= "\n</gnuplot>";
2028: return $result;
2029: }
2030:
2031: sub insert_tics {
2032: my $result;
2033: $result .= &insert_xtics() . &insert_ytics;
2034: return $result;
2035: }
2036:
2037: sub insert_xtics {
2038: my $result;
2039: $result .= "\n <xtics ";
2040: foreach my $attr (keys(%tic_defaults)) {
2041: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
2042: }
2043: $result .= "/>";
2044: return $result;
2045: }
2046:
2047: sub insert_ytics {
2048: my $result;
2049: $result .= "\n <ytics ";
2050: foreach my $attr (keys(%tic_defaults)) {
2051: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
2052: }
2053: $result .= "/>";
2054: return $result;
2055: }
2056:
2057: sub insert_key {
2058: my $result;
2059: $result .= "\n <key ";
2060: foreach my $attr (keys(%key_defaults)) {
2061: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
2062: }
2063: $result .= " />";
2064: return $result;
2065: }
2066:
2067: sub insert_axis{
2068: my $result;
2069: $result .= "\n <axis ";
2070: foreach my $attr (keys(%axis_defaults)) {
2071: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
2072: }
2073: $result .= " />";
2074: return $result;
2075: }
2076:
2077: sub insert_title { return "\n <title></title>"; }
2078: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
2079: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
2080:
2081: sub insert_label {
2082: my $result;
2083: $result .= "\n <label ";
2084: foreach my $attr (keys(%label_defaults)) {
2085: $result .= "\n $attr=\"".
2086: $label_defaults{$attr}->{'default'}."\"";
2087: }
2088: $result .= "></label>";
2089: return $result;
2090: }
2091:
2092: sub insert_curve {
2093: my $result;
2094: $result .= "\n <curve ";
2095: foreach my $attr (keys(%curve_defaults)) {
2096: $result .= "\n $attr=\"".
2097: $curve_defaults{$attr}->{'default'}."\"";
2098: }
2099: $result .= " >";
2100: $result .= &insert_data().&insert_data()."\n </curve>";
2101: }
2102:
2103: sub insert_function {
2104: my $result;
2105: $result .= "\n <function></function>";
2106: return $result;
2107: }
2108:
2109: sub insert_data {
2110: my $result;
2111: $result .= "\n <data></data>";
2112: return $result;
2113: }
2114:
2115: ##----------------------------------------------------------------------
2116: 1;
2117: __END__
2118:
2119:
2120: =head1 NAME
2121:
2122: Apache::lonplot.pm
2123:
2124: =head1 SYNOPSIS
2125:
2126: XML-based plotter of graphs
2127:
2128: This is part of the LearningOnline Network with CAPA project
2129: described at http://www.lon-capa.org.
2130:
2131:
2132: =head1 SUBROUTINES (parsing and edit rendering)
2133:
2134: =over
2135:
2136: =item start_gnuplot()
2137:
2138: =item end_gnuplot()
2139:
2140: =item start_xtics()
2141:
2142: =item end_xtics()
2143:
2144: =item start_ytics()
2145:
2146: =item end_ytics()
2147:
2148: =item get_font()
2149:
2150: =item start_key()
2151:
2152: =item end_key()
2153:
2154: =item parse_label()
2155:
2156: =item replace_entities()
2157:
2158: =item start_title()
2159:
2160: =item end_title()
2161:
2162: =item start_xlabel()
2163:
2164: =item end_xlabel()
2165:
2166: =item start_ylabel()
2167:
2168: =item end_label()
2169:
2170: =item start_curve()
2171:
2172: =item end_curve()
2173:
2174: =item start_function()
2175:
2176: =item end_function()
2177:
2178: =item start_data()
2179:
2180: =item end_data()
2181:
2182: =item start_axis()
2183:
2184: =item end_axis
2185:
2186: =back
2187:
2188: =head1 SUBROUTINES (Utility)
2189:
2190: =over
2191:
2192: =item set_defaults()
2193:
2194: =item get_attributes()
2195:
2196: =item write_gnuplot_file()
2197:
2198: =item check_inputs()
2199:
2200: =item edit_attributes()
2201:
2202: =back
2203:
2204: =head1 SUBROUTINES (Insertion functions for editing plots)
2205:
2206: =over
2207:
2208: =item insert_gnuplot()
2209:
2210: =item insert_tics()
2211:
2212: =item insert_xtics()
2213:
2214: =item insert_key()
2215:
2216: =item insert_axis()
2217:
2218: =item insert_title()
2219:
2220: =item insert_xlabel()
2221:
2222: =item insert_ylabel()
2223:
2224: =item insert_label()
2225:
2226: =item insert_curve()
2227:
2228: =item insert_function()
2229:
2230: =item insert_data()
2231:
2232: =back
2233:
2234: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonplot.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / xml