1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
4: # $Id: lonplot.pm,v 1.138 2008/05/13 11:01:43 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: package Apache::lonplot;
30:
31: use strict;
32: use warnings FATAL=>'all';
33: no warnings 'uninitialized';
34: use Apache::File;
35: use Apache::response;
36: use Apache::lonxml;
37: use Apache::edit;
38: use Apache::lonnet;
39: use LONCAPA;
40:
41:
42: use vars qw/$weboutputformat $version/;
43:
44:
45:
46: BEGIN {
47: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
48: #
49: # Determine the version of GNUPLOT
50: $weboutputformat = 'gif';
51: my $versionstring = `gnuplot --version 2>/dev/null`;
52: ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
53: if ($version >= 4) {
54: $weboutputformat = 'png';
55: }
56:
57: }
58:
59:
60: ##
61: ## Description of data structures:
62: ##
63: ## %plot %key %axis
64: ## --------------------------
65: ## height title color
66: ## width box xmin
67: ## bgcolor pos xmax
68: ## fgcolor ymin
69: ## transparent ymax
70: ## grid
71: ## border
72: ## font
73: ## align
74: ##
75: ## @labels: $labels[$i] = \%label
76: ## %label: text, xpos, ypos, justify
77: ##
78: ## @curves: $curves[$i] = \%curve
79: ## %curve: name, linestyle, ( function | data )
80: ##
81: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
82: ## [y1,y2,y3,y4] ]
83: ##
84:
85: ###################################################################
86: ## ##
87: ## Tests used in checking the validitity of input ##
88: ## ##
89: ###################################################################
90:
91: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
92: # is longer than this, it will be truncated.
93:
94: my %linetypes =
95: (
96: solid => 1,
97: dashed => 0
98: );
99:
100: my %linestyles =
101: (
102: lines => 2, # Maybe this will be used in the future
103: linespoints => 2, # to check on whether or not they have
104: dots => 2, # supplied enough <data></data> fields
105: points => 2, # to use the given line style. But for
106: steps => 2, # now there are more important things
107: fsteps => 2, # for me to deal with.
108: histeps => 2,
109: errorbars => 3,
110: xerrorbars => [3,4],
111: yerrorbars => [3,4],
112: xyerrorbars => [4,6],
113: boxes => 3,
114: filledcurves => 2,
115: vector => 4
116: );
117:
118: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
119: my $real_test =
120: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
121: my $pos_real_test =
122: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
123: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
124: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
125: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
126: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
127: my $linestyle_test = sub {exists($linestyles{$_[0]})};
128: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
129:
130: ###################################################################
131: ## ##
132: ## Attribute metadata ##
133: ## ##
134: ###################################################################
135: my @gnuplot_edit_order =
136: qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
137: transparent grid samples
138: border align plotcolor plottype gridtype lmargin rmargin
139: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
140: pattern solid/;
141:
142: my $margin_choices = ['default',0..20];
143:
144: my %gnuplot_defaults =
145: (
146: alttag => {
147: default => 'dynamically generated plot',
148: test => $words_test,
149: description => 'Brief description of the plot',
150: edit_type => 'entry',
151: size => '40'
152: },
153: height => {
154: default => 300,
155: test => $int_test,
156: description => 'Height of image (pixels)',
157: edit_type => 'entry',
158: size => '10'
159: },
160: width => {
161: default => 400,
162: test => $int_test,
163: description => 'Width of image (pixels)',
164: edit_type => 'entry',
165: size => '10'
166: },
167: bgcolor => {
168: default => 'xffffff',
169: test => $color_test,
170: description => 'Background color of image (xffffff)',
171: edit_type => 'entry',
172: size => '10'
173: },
174: fgcolor => {
175: default => 'x000000',
176: test => $color_test,
177: description => 'Foreground color of image (x000000)',
178: edit_type => 'entry',
179: size => '10'
180: },
181: transparent => {
182: default => 'off',
183: test => $onoff_test,
184: description => 'Transparent image',
185: edit_type => 'onoff'
186: },
187: grid => {
188: default => 'on',
189: test => $onoff_test,
190: description => 'Display grid',
191: edit_type => 'onoff'
192: },
193: gridlayer => {
194: default => 'off',
195: test => $onoff_test,
196: description => 'Display grid front layer over filled boxes or filled curves',
197: edit_type => 'onoff'
198: },
199: box_border => {
200: default => 'noborder',
201: test => sub {$_[0]=~/^(noborder|border)$/},
202: description => 'Draw border for boxes',
203: edit_type => 'choice',
204: choices => ['border','noborder']
205: },
206: border => {
207: default => 'on',
208: test => $onoff_test,
209: description => 'Draw border around plot',
210: edit_type => 'onoff'
211: },
212: font => {
213: default => '9',
214: test => $sml_test,
215: description => 'Font size to use in web output (pts)',
216: edit_type => 'choice',
217: choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
218: },
219: fontface => {
220: default => 'sans-serif',
221: test => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
222: description => 'Type of font to use',
223: edit_type => 'choice',
224: choices => ['sans-serif','serif', 'classic']
225: },
226: samples => {
227: default => '100',
228: test => $int_test,
229: description => 'Number of samples for non-data plots',
230: edit_type => 'choice',
231: choices => ['100','200','500','1000','2000','5000']
232: },
233: align => {
234: default => 'middle',
235: test => sub {$_[0]=~/^(left|right|middle|center)$/},
236: description => 'Alignment for image in HTML',
237: edit_type => 'choice',
238: choices => ['left','right','middle']
239: },
240: texwidth => {
241: default => '93',
242: test => $int_test,
243: description => 'Width of plot when printed (mm)',
244: edit_type => 'entry',
245: size => '5'
246: },
247: texfont => {
248: default => '22',
249: test => $int_test,
250: description => 'Font size to use in TeX output (pts):',
251: edit_type => 'choice',
252: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
253: },
254: plotcolor => {
255: default => 'monochrome',
256: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
257: description => 'Color setting for printing:',
258: edit_type => 'choice',
259: choices => [qw/monochrome color colour/],
260: },
261: pattern => {
262: default => '',
263: test => $int_test,
264: description => 'Pattern value for boxes:',
265: edit_type => 'choice',
266: choices => [0,1,2,3,4,5,6]
267: },
268: solid => {
269: default => 0,
270: test => $real_test,
271: description => 'The density of fill style for boxes',
272: edit_type => 'entry',
273: size => '5'
274: },
275: fillstyle => {
276: default => 'empty',
277: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
278: description => 'Filled style for boxes:',
279: edit_type => 'choice',
280: choices => ['empty','solid','pattern']
281: },
282: plottype => {
283: default => 'Cartesian',
284: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
285: description => 'Plot type:',
286: edit_type => 'choice',
287: choices => ['Cartesian','Polar']
288: },
289: gridtype => {
290: default => 'Cartesian',
291: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
292: description => 'Grid type:',
293: edit_type => 'choice',
294: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
295: },
296: lmargin => {
297: default => 'default',
298: test => sub {$_[0]=~/^(default|\d+)$/},
299: description => 'Left margin width (pts):',
300: edit_type => 'choice',
301: choices => $margin_choices,
302: },
303: rmargin => {
304: default => 'default',
305: test => sub {$_[0]=~/^(default|\d+)$/},
306: description => 'Right margin width (pts):',
307: edit_type => 'choice',
308: choices => $margin_choices,
309: },
310: tmargin => {
311: default => 'default',
312: test => sub {$_[0]=~/^(default|\d+)$/},
313: description => 'Top margin width (pts):',
314: edit_type => 'choice',
315: choices => $margin_choices,
316: },
317: bmargin => {
318: default => 'default',
319: test => sub {$_[0]=~/^(default|\d+)$/},
320: description => 'Bottom margin width (pts):',
321: edit_type => 'choice',
322: choices => $margin_choices,
323: },
324: boxwidth => {
325: default => '',
326: test => $real_test,
327: description => 'Width of boxes, default is auto',
328: edit_type => 'entry',
329: size => '5'
330: },
331: major_ticscale => {
332: default => '1',
333: test => $real_test,
334: description => 'Size of major tic marks (plot coordinates)',
335: edit_type => 'entry',
336: size => '5'
337: },
338: minor_ticscale => {
339: default => '0.5',
340: test => $real_test,
341: description => 'Size of minor tic mark (plot coordinates)',
342: edit_type => 'entry',
343: size => '5'
344: },
345: );
346:
347: my %key_defaults =
348: (
349: title => {
350: default => '',
351: test => $words_test,
352: description => 'Title of key',
353: edit_type => 'entry',
354: size => '40'
355: },
356: box => {
357: default => 'off',
358: test => $onoff_test,
359: description => 'Draw a box around the key?',
360: edit_type => 'onoff'
361: },
362: pos => {
363: default => 'top right',
364: test => $key_pos_test,
365: description => 'Position of the key on the plot',
366: edit_type => 'choice',
367: choices => ['top left','top right','bottom left','bottom right',
368: 'outside','below']
369: }
370: );
371:
372: my %label_defaults =
373: (
374: xpos => {
375: default => 0,
376: test => $real_test,
377: description => 'X position of label (graph coordinates)',
378: edit_type => 'entry',
379: size => '10'
380: },
381: ypos => {
382: default => 0,
383: test => $real_test,
384: description => 'Y position of label (graph coordinates)',
385: edit_type => 'entry',
386: size => '10'
387: },
388: justify => {
389: default => 'left',
390: test => sub {$_[0]=~/^(left|right|center)$/},
391: description => 'justification of the label text on the plot',
392: edit_type => 'choice',
393: choices => ['left','right','center']
394: },
395: rotate => {
396: default => 0,
397: test => $real_test,
398: description => 'Rotation of label (degrees)',
399: edit_type => 'entry',
400: size => '10',
401: }
402: );
403:
404: my @tic_edit_order = ('location','mirror','start','increment','end',
405: 'minorfreq');
406: my %tic_defaults =
407: (
408: location => {
409: default => 'border',
410: test => sub {$_[0]=~/^(border|axis)$/},
411: description => 'Location of major tic marks',
412: edit_type => 'choice',
413: choices => ['border','axis']
414: },
415: mirror => {
416: default => 'on',
417: test => $onoff_test,
418: description => 'Mirror tics on opposite axis?',
419: edit_type => 'onoff'
420: },
421: start => {
422: default => '-10.0',
423: test => $real_test,
424: description => 'Start major tics at',
425: edit_type => 'entry',
426: size => '10'
427: },
428: increment => {
429: default => '1.0',
430: test => $real_test,
431: description => 'Place a major tic every',
432: edit_type => 'entry',
433: size => '10'
434: },
435: end => {
436: default => ' 10.0',
437: test => $real_test,
438: description => 'Stop major tics at ',
439: edit_type => 'entry',
440: size => '10'
441: },
442: minorfreq => {
443: default => '0',
444: test => $int_test,
445: description => 'Number of minor tics per major tic mark',
446: edit_type => 'entry',
447: size => '10'
448: },
449: );
450:
451: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat');
452: my %axis_defaults =
453: (
454: color => {
455: default => 'x000000',
456: test => $color_test,
457: description => 'Color of grid lines (x000000)',
458: edit_type => 'entry',
459: size => '10'
460: },
461: xmin => {
462: default => '-10.0',
463: test => $real_test,
464: description => 'Minimum x-value shown in plot',
465: edit_type => 'entry',
466: size => '10'
467: },
468: xmax => {
469: default => ' 10.0',
470: test => $real_test,
471: description => 'Maximum x-value shown in plot',
472: edit_type => 'entry',
473: size => '10'
474: },
475: ymin => {
476: default => '-10.0',
477: test => $real_test,
478: description => 'Minimum y-value shown in plot',
479: edit_type => 'entry',
480: size => '10'
481: },
482: ymax => {
483: default => ' 10.0',
484: test => $real_test,
485: description => 'Maximum y-value shown in plot',
486: edit_type => 'entry',
487: size => '10'
488: },
489: xformat => {
490: default => 'on',
491: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
492: description => 'X-axis number formatting',
493: edit_type => 'choice',
494: choices => ['on', 'off', '2e', '2f'],
495: },
496: yformat => {
497: default => 'on',
498: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
499: description => 'X-axis number formatting',
500: edit_type => 'choice',
501: choices => ['on', 'off', '2e', '2f'],
502: },
503:
504: );
505:
506: my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
507:
508: my %curve_defaults =
509: (
510: color => {
511: default => 'x000000',
512: test => $color_test,
513: description => 'Color of curve (x000000)',
514: edit_type => 'entry',
515: size => '10'
516: },
517: name => {
518: default => '',
519: test => $words_test,
520: description => 'Name of curve to appear in key',
521: edit_type => 'entry',
522: size => '20'
523: },
524: linestyle => {
525: default => 'lines',
526: test => $linestyle_test,
527: description => 'Plot with:',
528: edit_type => 'choice',
529: choices => [keys(%linestyles)]
530: },
531: linewidth => {
532: default => 1,
533: test => $int_test,
534: description => 'Line width (may not apply to all plot styles)',
535: edit_type => 'choice',
536: choices => [1,2,3,4,5,6,7,8,9,10]
537: },
538: linetype => {
539: default => 'solid',
540: test => sub {$_[0]=~/^(solid|dashed)$/},
541: description => 'Line type (may not apply to all plot styles)',
542: edit_type => 'choice',
543: choices => ['solid', 'dashed']
544: },
545: pointsize => {
546: default => 1,
547: test => $pos_real_test,
548: description => 'Point size (may not apply to all plot styles)',
549: edit_type => 'entry',
550: size => '5'
551: },
552: pointtype => {
553: default => 1,
554: test => $int_test,
555: description => 'Point type (may not apply to all plot styles)',
556: edit_type => 'choice',
557: choices => [0,1,2,3,4,5,6]
558: },
559: limit => {
560: default => 'closed',
561: test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
562: description => 'Point to fill -- for filledcurves',
563: edit_type => 'choice',
564: choices => ['above', 'below', 'closed','x1','x2','y1','y2']
565: },
566: );
567:
568: ###################################################################
569: ## ##
570: ## parsing and edit rendering ##
571: ## ##
572: ###################################################################
573:
574: undef %Apache::lonplot::plot;
575: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
576:
577: sub start_gnuplot {
578: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
579: undef($title); undef($xlabel); undef($ylabel);
580: undef(@labels); undef(@curves);
581: undef(%xtics); undef(%ytics);
582: #
583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
584: my $result='';
585: &Apache::lonxml::register('Apache::lonplot',
586: ('title','xlabel','ylabel','key','axis','label','curve',
587: 'xtics','ytics'));
588: push (@Apache::lonxml::namespace,'lonplot');
589: if ($target eq 'web' || $target eq 'tex') {
590: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
591: $tagstack->[-1]);
592: } elsif ($target eq 'edit') {
593: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
594: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
595: \@gnuplot_edit_order)
596: .&Apache::edit::end_row()
597: .&Apache::edit::start_spanning_row();
598: } elsif ($target eq 'modified') {
599: my $constructtag=&Apache::edit::get_new_args
600: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
601: if ($constructtag) {
602: $result = &Apache::edit::rebuild_tag($token);
603: }
604: }
605: return $result;
606: }
607:
608: sub end_gnuplot {
609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
610: pop @Apache::lonxml::namespace;
611: &Apache::lonxml::deregister('Apache::lonplot',
612: ('title','xlabel','ylabel','key','axis','label','curve'));
613: my $result = '';
614: my $randnumber;
615: # need to call rand everytime start_script would evaluate, as the
616: # safe space rand number generator and the global rand generator
617: # are not separate
618: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
619: $target eq 'answer') {
620: $randnumber=int(rand(1000));
621: }
622: if ($target eq 'web' || $target eq 'tex') {
623: &check_inputs(); # Make sure we have all the data we need
624: ##
625: ## Determine filename
626: my $tmpdir = '/home/httpd/perl/tmp/';
627: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
628: '_'.time.'_'.$$.$randnumber.'_plot';
629: ## Write the plot description to the file
630: &write_gnuplot_file($tmpdir,$filename,$target);
631: $filename = &escape($filename);
632: ## return image tag for the plot
633: if ($target eq 'web') {
634: $result .= <<"ENDIMAGE";
635: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
636: width = "$Apache::lonplot::plot{'width'}"
637: height = "$Apache::lonplot::plot{'height'}"
638: align = "$Apache::lonplot::plot{'align'}"
639: alt = "$Apache::lonplot::plot{'alttag'}" />
640: ENDIMAGE
641: } elsif ($target eq 'tex') {
642: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
643: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
644: #might be inside the safe space, register the URL for later
645: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
646: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
647: $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
648: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
649: }
650: } elsif ($target eq 'edit') {
651: $result.=&Apache::edit::tag_end($target,$token);
652: }
653: return $result;
654: }
655:
656:
657: ##--------------------------------------------------------------- xtics
658: sub start_xtics {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660: my $result='';
661: if ($target eq 'web' || $target eq 'tex') {
662: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
663: $tagstack->[-1]);
664: } elsif ($target eq 'edit') {
665: $result .= &Apache::edit::tag_start($target,$token,'xtics');
666: $result .= &edit_attributes($target,$token,\%tic_defaults,
667: \@tic_edit_order);
668: } elsif ($target eq 'modified') {
669: my $constructtag=&Apache::edit::get_new_args
670: ($token,$parstack,$safeeval,keys(%tic_defaults));
671: if ($constructtag) {
672: $result = &Apache::edit::rebuild_tag($token);
673: }
674: }
675: return $result;
676: }
677:
678: sub end_xtics {
679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
680: my $result = '';
681: if ($target eq 'web' || $target eq 'tex') {
682: } elsif ($target eq 'edit') {
683: $result.=&Apache::edit::tag_end($target,$token);
684: }
685: return $result;
686: }
687:
688: ##--------------------------------------------------------------- ytics
689: sub start_ytics {
690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
691: my $result='';
692: if ($target eq 'web' || $target eq 'tex') {
693: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
694: $tagstack->[-1]);
695: } elsif ($target eq 'edit') {
696: $result .= &Apache::edit::tag_start($target,$token,'ytics');
697: $result .= &edit_attributes($target,$token,\%tic_defaults,
698: \@tic_edit_order);
699: } elsif ($target eq 'modified') {
700: my $constructtag=&Apache::edit::get_new_args
701: ($token,$parstack,$safeeval,keys(%tic_defaults));
702: if ($constructtag) {
703: $result = &Apache::edit::rebuild_tag($token);
704: }
705: }
706: return $result;
707: }
708:
709: sub end_ytics {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
711: my $result = '';
712: if ($target eq 'web' || $target eq 'tex') {
713: } elsif ($target eq 'edit') {
714: $result.=&Apache::edit::tag_end($target,$token);
715: }
716: return $result;
717: }
718:
719: ##-----------------------------------------------------------------font
720: my %font_properties =
721: (
722: 'classic' => {
723: face => 'classic',
724: file => 'DejaVuSansMono-Bold',
725: printname => 'Helvetica',
726: tex_no_file => 1,
727: },
728: 'sans-serif' => {
729: face => 'sans-serif',
730: file => 'DejaVuSans',
731: printname => 'DejaVuSans',
732: },
733: 'serif' => {
734: face => 'serif',
735: file => 'DejaVuSerif',
736: printname => 'DejaVuSerif',
737: },
738: );
739:
740: sub get_font {
741: my ($target) = @_;
742: my ($size, $selected_font);
743:
744: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
745: $selected_font = $font_properties{'classic'};
746: if ( $Apache::lonplot::plot{'font'} eq 'small') {
747: $size = '5';
748: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
749: $size = '9';
750: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
751: $size = '11';
752: } else {
753: $size = '9';
754: }
755: } else {
756: $size = $Apache::lonplot::plot{'font'};
757: $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
758: }
759: if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
760: $size = $Apache::lonplot::plot{'texfont'};
761: }
762: return ($size, $selected_font);
763: }
764:
765: ##----------------------------------------------------------------- key
766: sub start_key {
767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
768: my $result='';
769: if ($target eq 'web' || $target eq 'tex') {
770: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
771: $tagstack->[-1]);
772: } elsif ($target eq 'edit') {
773: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
774: $result .= &edit_attributes($target,$token,\%key_defaults);
775: } elsif ($target eq 'modified') {
776: my $constructtag=&Apache::edit::get_new_args
777: ($token,$parstack,$safeeval,keys(%key_defaults));
778: if ($constructtag) {
779: $result = &Apache::edit::rebuild_tag($token);
780: }
781: }
782: return $result;
783: }
784:
785: sub end_key {
786: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
787: my $result = '';
788: if ($target eq 'web' || $target eq 'tex') {
789: } elsif ($target eq 'edit') {
790: $result.=&Apache::edit::tag_end($target,$token);
791: }
792: return $result;
793: }
794:
795: sub parse_label {
796: my ($target,$text) = @_;
797: my $parser=HTML::LCParser->new(\$text);
798: my $result;
799: while (my $token=$parser->get_token) {
800: if ($token->[0] eq 'S') {
801: if ($token->[1] eq 'sub') {
802: $result .= '_{';
803: } elsif ($token->[1] eq 'sup') {
804: $result .= '^{';
805: } else {
806: $result .= $token->[4];
807: }
808: } elsif ($token->[0] eq 'E') {
809: if ($token->[1] eq 'sub'
810: || $token->[1] eq 'sup') {
811: $result .= '}';
812: } else {
813: $result .= $token->[2];
814: }
815: } elsif ($token->[0] eq 'T') {
816: $result .= &replace_entities($target,$token->[1]);
817: }
818: }
819: return $result;
820: }
821:
822:
823: my %lookup =
824: ( # Greek alphabet:
825:
826: '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
827: '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
828: '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
829: '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
830: '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
831: '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
832: '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
833: '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
834: '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
835: '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
836: '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
837: '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
838: '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
839: '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
840: '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
841: '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
842: '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
843: '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
844: '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
845: '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
846: '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
847: '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
848: '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
849: '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
850: '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
851: '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
852: '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
853: '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
854: '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
855: '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
856: '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
857: '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
858: '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
859: '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
860: '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
861: '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
862: '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
863: '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
864: '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
865: '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
866: '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
867: '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
868: '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
869: '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
870: '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
871: '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
872: '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
873: '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
874:
875: # Punctuation:
876:
877: '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
878: '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
879: '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
880: '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
881: '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
882: '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
883: '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
884: '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
885: '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
886: '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
887: '#137' => {'tex' => '{/Text \275}', 'web' => "\x{2030}"},
888: '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # no S-caron in ps fonts.
889: '#139' => {'tex' => '<', 'web' => '<'},
890: '#140' => {'tex' => '{/Text \352}', 'web' => "\x{152}"},
891: '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
892: '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
893: '#147' => {'tex' => '{/Text \252}', 'web' => "\x{201c}"},
894: '#148' => {'tex' => '{/Text \315}', 'web' => '\\"'},
895: '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
896: '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, #Untested here en dash
897: '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
898: '#152' => {'tex' => '~', 'web' => '~'},
899: '#153' => {'tex' => '{/Text \324}', 'web' => "\x{2122}"}, # trademark
900: '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
901: '#155' => {'tex' => '>', 'web' => '\76'}, # >
902: '#156' => {'tex' => '{/Text \372}', 'web' => "\x{153}"}, # oe ligature.
903: '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print
904: '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
905: '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
906: '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
907: '(pound|#163}' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
908: '(curren|#164)' => {'tex' => '{/Text \250}', 'web' => "\x{a4}"}, # Generic currency symb.
909: '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
910: '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
911: '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
912: '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
913: '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
914: '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
915: '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
916: '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
917: '(shy|#173)' => {'tex' => '-', 'web' => "\x{ad}"}, # soft hyphen.
918: '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
919: '(macr|#175)' => {'tex' => '^{-}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
920: '(deg|#176)' => {'tex' => '{/Text \312}', 'web' => "\x{b0}"}, # Degree symbo..
921: '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
922: '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
923: '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
924: '(acute|#180)' => {'tex' => '{/Text \302}', 'web' => "\x{b4}"}, # 'naked' acute accent.
925: '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
926: '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
927: '(middot|#183)' => {'tex' => '^.', 'web' => "\x{b7}"}, # middle dot (maybe text 267 is better)?
928: '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
929: '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
930: '(ordm|#186)' => {'tex' => '\353', 'web' => "\x{ba}"}, # masculine ordinal.
931: '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
932: '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
933: '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
934: '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
935: '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
936: '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
937: '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
938: '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
939: '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
940: '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
941: '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
942: 'AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
943: );
944:
945:
946: sub replace_entities {
947: my ($target,$text) = @_;
948: $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
949: while (my ($re, $replace) = each(%lookup)) {
950: my $repl = $replace->{$target};
951: $text =~ s/&$re;/$replace->{$target}/g;
952: }
953: $text =~ s{(&)}{\\\\$1}g;
954: return $text;
955: }
956:
957: ##------------------------------------------------------------------- title
958: sub start_title {
959: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
960: my $result='';
961: if ($target eq 'web' || $target eq 'tex') {
962: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
963: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
964: $title =~ s/\n/ /g;
965: if (length($title) > $max_str_len) {
966: $title = substr($title,0,$max_str_len);
967: }
968: $title = &parse_label($target,$title);
969: } elsif ($target eq 'edit') {
970: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
971: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
972: $result.=&Apache::edit::editline('',$text,'',60);
973: } elsif ($target eq 'modified') {
974: $result.=&Apache::edit::rebuild_tag($token);
975: $result.=&Apache::edit::modifiedfield("/title",$parser);
976: }
977: return $result;
978: }
979:
980: sub end_title {
981: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
982: my $result = '';
983: if ($target eq 'web' || $target eq 'tex') {
984: } elsif ($target eq 'edit') {
985: $result.=&Apache::edit::tag_end($target,$token);
986: }
987: return $result;
988: }
989: ##------------------------------------------------------------------- xlabel
990: sub start_xlabel {
991: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
992: my $result='';
993: if ($target eq 'web' || $target eq 'tex') {
994: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
995: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
996: $xlabel =~ s/\n/ /g;
997: if (length($xlabel) > $max_str_len) {
998: $xlabel = substr($xlabel,0,$max_str_len);
999: }
1000: $xlabel = &parse_label($target,$xlabel);
1001: } elsif ($target eq 'edit') {
1002: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1003: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1004: $result.=&Apache::edit::editline('',$text,'',60);
1005: } elsif ($target eq 'modified') {
1006: $result.=&Apache::edit::rebuild_tag($token);
1007: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1008: }
1009: return $result;
1010: }
1011:
1012: sub end_xlabel {
1013: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1014: my $result = '';
1015: if ($target eq 'web' || $target eq 'tex') {
1016: } elsif ($target eq 'edit') {
1017: $result.=&Apache::edit::tag_end($target,$token);
1018: }
1019: return $result;
1020: }
1021:
1022: ##------------------------------------------------------------------- ylabel
1023: sub start_ylabel {
1024: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1025: my $result='';
1026: if ($target eq 'web' || $target eq 'tex') {
1027: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1028: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1029: $ylabel =~ s/\n/ /g;
1030: if (length($ylabel) > $max_str_len) {
1031: $ylabel = substr($ylabel,0,$max_str_len);
1032: }
1033: $ylabel = &parse_label($target,$ylabel);
1034: } elsif ($target eq 'edit') {
1035: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1036: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1037: $result .= &Apache::edit::editline('',$text,'',60);
1038: } elsif ($target eq 'modified') {
1039: $result.=&Apache::edit::rebuild_tag($token);
1040: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1041: }
1042: return $result;
1043: }
1044:
1045: sub end_ylabel {
1046: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1047: my $result = '';
1048: if ($target eq 'web' || $target eq 'tex') {
1049: } elsif ($target eq 'edit') {
1050: $result.=&Apache::edit::tag_end($target,$token);
1051: }
1052: return $result;
1053: }
1054:
1055: ##------------------------------------------------------------------- label
1056: sub start_label {
1057: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1058: my $result='';
1059: if ($target eq 'web' || $target eq 'tex') {
1060: my %label;
1061: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1062: $tagstack->[-1]);
1063: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1064: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1065: $text =~ s/\n/ /g;
1066: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
1067: $label{'text'} = &parse_label($target,$text);
1068: push(@labels,\%label);
1069: } elsif ($target eq 'edit') {
1070: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1071: $result .= &edit_attributes($target,$token,\%label_defaults);
1072: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1073: $result .= &Apache::edit::end_row().
1074: &Apache::edit::start_spanning_row().
1075: &Apache::edit::editline('',$text,'',60);
1076: } elsif ($target eq 'modified') {
1077: &Apache::edit::get_new_args
1078: ($token,$parstack,$safeeval,keys(%label_defaults));
1079: $result.=&Apache::edit::rebuild_tag($token);
1080: $result.=&Apache::edit::modifiedfield("/label",$parser);
1081: }
1082: return $result;
1083: }
1084:
1085: sub end_label {
1086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1087: my $result = '';
1088: if ($target eq 'web' || $target eq 'tex') {
1089: } elsif ($target eq 'edit') {
1090: $result.=&Apache::edit::tag_end($target,$token);
1091: }
1092: return $result;
1093: }
1094:
1095: ##------------------------------------------------------------------- curve
1096: sub start_curve {
1097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1098: my $result='';
1099: &Apache::lonxml::register('Apache::lonplot',('function','data'));
1100: push (@Apache::lonxml::namespace,'curve');
1101: if ($target eq 'web' || $target eq 'tex') {
1102: my %curve;
1103: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1104: $tagstack->[-1]);
1105: push (@curves,\%curve);
1106: } elsif ($target eq 'edit') {
1107: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1108: $result .= &edit_attributes($target,$token,\%curve_defaults,
1109: \@curve_edit_order)
1110: .&Apache::edit::end_row()
1111: .&Apache::edit::start_spanning_row();
1112:
1113: } elsif ($target eq 'modified') {
1114: my $constructtag=&Apache::edit::get_new_args
1115: ($token,$parstack,$safeeval,keys(%curve_defaults));
1116: if ($constructtag) {
1117: $result = &Apache::edit::rebuild_tag($token);
1118: }
1119: }
1120: return $result;
1121: }
1122:
1123: sub end_curve {
1124: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1125: my $result = '';
1126: pop @Apache::lonxml::namespace;
1127: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1128: if ($target eq 'web' || $target eq 'tex') {
1129: } elsif ($target eq 'edit') {
1130: $result.=&Apache::edit::tag_end($target,$token);
1131: }
1132: return $result;
1133: }
1134:
1135: ##------------------------------------------------------------ curve function
1136: sub start_function {
1137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1138: my $result='';
1139: if ($target eq 'web' || $target eq 'tex') {
1140: if (exists($curves[-1]->{'data'})) {
1141: &Apache::lonxml::warning
1142: ('Use of the <b>curve function</b> tag precludes use of '.
1143: ' the <b>curve data</b> tag. '.
1144: 'The curve data tag will be omitted in favor of the '.
1145: 'curve function declaration.');
1146: delete $curves[-1]->{'data'} ;
1147: }
1148: my $function = &Apache::lonxml::get_all_text("/function",$parser,
1149: $style);
1150: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
1151: $curves[-1]->{'function'} = $function;
1152: } elsif ($target eq 'edit') {
1153: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1154: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1155: $result .= &Apache::edit::editline('',$text,'',60);
1156: } elsif ($target eq 'modified') {
1157: $result.=&Apache::edit::rebuild_tag($token);
1158: $result.=&Apache::edit::modifiedfield("/function",$parser);
1159: }
1160: return $result;
1161: }
1162:
1163: sub end_function {
1164: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1165: my $result = '';
1166: if ($target eq 'web' || $target eq 'tex') {
1167: } elsif ($target eq 'edit') {
1168: $result .= &Apache::edit::end_table();
1169: }
1170: return $result;
1171: }
1172:
1173: ##------------------------------------------------------------ curve data
1174: sub start_data {
1175: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1176: my $result='';
1177: if ($target eq 'web' || $target eq 'tex') {
1178: if (exists($curves[-1]->{'function'})) {
1179: &Apache::lonxml::warning
1180: ('Use of the <b>curve function</b> tag precludes use of '.
1181: ' the <b>curve data</b> tag. '.
1182: 'The curve function tag will be omitted in favor of the '.
1183: 'curve data declaration.');
1184: delete($curves[-1]->{'function'});
1185: }
1186: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1187: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1188: # Deal with cases where we're given an array...
1189: if ($datatext =~ /^\@/) {
1190: $datatext = &Apache::run::run('return "'.$datatext.'"',
1191: $safeeval,1);
1192: }
1193: $datatext =~ s/\s+/ /g;
1194: # Need to do some error checking on the @data array -
1195: # make sure it's all numbers and make sure each array
1196: # is of the same length.
1197: my @data;
1198: if ($datatext =~ /,/) { # comma deliminated
1199: @data = split /,/,$datatext;
1200: } else { # Assume it's space separated.
1201: @data = split / /,$datatext;
1202: }
1203: for (my $i=0;$i<=$#data;$i++) {
1204: # Check that it's non-empty
1205: if (! defined($data[$i])) {
1206: &Apache::lonxml::warning(
1207: 'undefined curve data value. Replacing with '.
1208: ' pi/e = 1.15572734979092');
1209: $data[$i] = 1.15572734979092;
1210: }
1211: # Check that it's a number
1212: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
1213: &Apache::lonxml::warning(
1214: 'Bad curve data value of '.$data[$i].' Replacing with '.
1215: ' pi/e = 1.15572734979092');
1216: $data[$i] = 1.15572734979092;
1217: }
1218: }
1219: # complain if the number of data points is not the same as
1220: # in previous sets of data.
1221: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1222: &Apache::lonxml::warning
1223: ('Number of data points is not consistent with previous '.
1224: 'number of data points');
1225: }
1226: push @{$curves[-1]->{'data'}},\@data;
1227: } elsif ($target eq 'edit') {
1228: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1229: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1230: $result .= &Apache::edit::editline('',$text,'',60);
1231: } elsif ($target eq 'modified') {
1232: $result.=&Apache::edit::rebuild_tag($token);
1233: $result.=&Apache::edit::modifiedfield("/data",$parser);
1234: }
1235: return $result;
1236: }
1237:
1238: sub end_data {
1239: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1240: my $result = '';
1241: if ($target eq 'web' || $target eq 'tex') {
1242: } elsif ($target eq 'edit') {
1243: $result .= &Apache::edit::end_table();
1244: }
1245: return $result;
1246: }
1247:
1248: ##------------------------------------------------------------------- axis
1249: sub start_axis {
1250: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1251: my $result='';
1252: if ($target eq 'web' || $target eq 'tex') {
1253: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1254: $tagstack->[-1]);
1255: } elsif ($target eq 'edit') {
1256: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1257: $result .= &edit_attributes($target,$token,\%axis_defaults,
1258: \@axis_edit_order);
1259: } elsif ($target eq 'modified') {
1260: my $constructtag=&Apache::edit::get_new_args
1261: ($token,$parstack,$safeeval,keys(%axis_defaults));
1262: if ($constructtag) {
1263: $result = &Apache::edit::rebuild_tag($token);
1264: }
1265: }
1266: return $result;
1267: }
1268:
1269: sub end_axis {
1270: my ($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,$token);
1275: } elsif ($target eq 'modified') {
1276: }
1277: return $result;
1278: }
1279:
1280: ###################################################################
1281: ## ##
1282: ## Utility Functions ##
1283: ## ##
1284: ###################################################################
1285:
1286: ##----------------------------------------------------------- set_defaults
1287: sub set_defaults {
1288: my ($var,$defaults) = @_;
1289: my $key;
1290: foreach $key (keys(%$defaults)) {
1291: $var->{$key} = $defaults->{$key}->{'default'};
1292: }
1293: }
1294:
1295: ##------------------------------------------------------------------- misc
1296: sub get_attributes{
1297: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1298: foreach my $attr (keys(%{$defaults})) {
1299: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1300: $values->{$attr} =
1301: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1302: } else {
1303: $values->{$attr} =
1304: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1305: }
1306: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1307: $values->{$attr} = $defaults->{$attr}->{'default'};
1308: next;
1309: }
1310: my $test = $defaults->{$attr}->{'test'};
1311: if (! &$test($values->{$attr})) {
1312: &Apache::lonxml::warning
1313: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1314: .$defaults->{$attr}->{'default'} );
1315: $values->{$attr} = $defaults->{$attr}->{'default'};
1316: }
1317: }
1318: return ;
1319: }
1320:
1321: ##------------------------------------------------------- write_gnuplot_file
1322: sub write_gnuplot_file {
1323: my ($tmpdir,$filename,$target)= @_;
1324: my ($fontsize, $font_properties) = &get_font($target);
1325: my $gnuplot_input = '';
1326: my $curve;
1327: #
1328: # Check to be sure we do not have any empty curves
1329: my @curvescopy;
1330: foreach my $curve (@curves) {
1331: if (exists($curve->{'function'})) {
1332: if ($curve->{'function'} !~ /^\s*$/) {
1333: push(@curvescopy,$curve);
1334: }
1335: } elsif (exists($curve->{'data'})) {
1336: foreach my $data (@{$curve->{'data'}}) {
1337: if (scalar(@$data) > 0) {
1338: push(@curvescopy,$curve);
1339: last;
1340: }
1341: }
1342: }
1343: }
1344: @curves = @curvescopy;
1345: # Collect all the colors
1346: my @Colors;
1347: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1348: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1349: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1350: foreach $curve (@curves) {
1351: push @Colors, ($curve->{'color'} ne '' ?
1352: $curve->{'color'} :
1353: $Apache::lonplot::plot{'fgcolor'} );
1354: }
1355: # set term
1356: if ($target eq 'web') {
1357: $gnuplot_input .= 'set terminal png enhanced nocrop ';
1358: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1359: $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1360: '/'.$font_properties->{'file'}.'.ttf" ';
1361: $gnuplot_input .= $fontsize;
1362: $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1363: $gnuplot_input .= "@Colors\n";
1364: # set output
1365: $gnuplot_input .= "set output\n";
1366: } elsif ($target eq 'tex') {
1367: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
1368: if (!$font_properties->{'tex_no_file'}) {
1369: $gnuplot_input .=
1370: 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1371: '/'.$font_properties->{'file'}.'.pfb" ';
1372: }
1373: $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
1374: $gnuplot_input .= $fontsize;
1375: $gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/".
1376: &unescape($filename).".eps\"\n";
1377: }
1378: # cartesian or polar plot?
1379: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1380: $gnuplot_input .= 'set polar'.$/;
1381: } else {
1382: # Assume Cartesian
1383: }
1384: # cartesian or polar grid?
1385: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
1386: $gnuplot_input .= 'set grid polar'.$/;
1387: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
1388: $gnuplot_input .= 'set logscale x'.$/;
1389: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
1390: $gnuplot_input .= 'set logscale y'.$/;
1391: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
1392: $gnuplot_input .= 'set logscale x'.$/;
1393: $gnuplot_input .= 'set logscale y'.$/;
1394: } else {
1395: # Assume Cartesian
1396: }
1397: # solid or pattern for boxes?
1398: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1399: $gnuplot_input .= 'set style fill solid '.
1400: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1401: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1402: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1403: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1404: }
1405: # margin
1406: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1407: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1408: }
1409: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1410: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1411: }
1412: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1413: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1414: }
1415: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1416: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1417: }
1418:
1419: # tic scales
1420: if ($version > 4) {
1421: $gnuplot_input .= 'set tics scale '.
1422: $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1423: } else {
1424: $gnuplot_input .= 'set ticscale '.
1425: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1426: }
1427: #boxwidth
1428: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1429: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1430: }
1431: # gridlayer
1432: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1433: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1434:
1435: # grid
1436: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1437: # border
1438: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1439: 'set border'.$/ :
1440: 'set noborder'.$/ );
1441: # sampling rate for non-data curves
1442: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1443: # title, xlabel, ylabel
1444: # titles
1445: my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
1446: my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
1447:
1448: if ($target eq 'tex') {
1449: $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
1450: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
1451: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
1452: } else {
1453: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1454: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
1455: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
1456: }
1457: # tics
1458: if (%xtics) {
1459: $gnuplot_input .= "set xtics $xtics{'location'} ";
1460: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1461: $gnuplot_input .= "$xtics{'start'}, ";
1462: $gnuplot_input .= "$xtics{'increment'}, ";
1463: $gnuplot_input .= "$xtics{'end'}\n";
1464: if ($xtics{'minorfreq'} != 0) {
1465: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1466: }
1467: }
1468: if (%ytics) {
1469: $gnuplot_input .= "set ytics $ytics{'location'} ";
1470: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1471: $gnuplot_input .= "$ytics{'start'}, ";
1472: $gnuplot_input .= "$ytics{'increment'}, ";
1473: $gnuplot_input .= "$ytics{'end'}\n";
1474: if ($ytics{'minorfreq'} != 0) {
1475: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1476: }
1477: }
1478: # axis
1479: if (%axis) {
1480: if ($axis{'xformat'} ne 'on') {
1481: $gnuplot_input .= "set format x ";
1482: if ($axis{'xformat'} eq 'off') {
1483: $gnuplot_input .= "\"\"\n";
1484: } else {
1485: $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
1486: }
1487: }
1488: if ($axis{'yformat'} ne 'on') {
1489: $gnuplot_input .= "set format y ";
1490: if ($axis{'yformat'} eq 'off') {
1491: $gnuplot_input .= "\"\"\n";
1492: } else {
1493: $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
1494: }
1495: }
1496: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1497: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1498: }
1499: # Key
1500: if (%key) {
1501: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1502: if ($key{'title'} ne '') {
1503: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1504: }
1505: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1506: } else {
1507: $gnuplot_input .= 'set nokey'.$/;
1508: }
1509: # labels
1510: my $label;
1511: foreach $label (@labels) {
1512: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1513: $label->{'xpos'}.','.$label->{'ypos'};
1514: if ($label->{'rotate'} ne '') {
1515: $gnuplot_input .= ' rotate by '.$label->{'rotate'};
1516: }
1517: $gnuplot_input .= ' '.$label->{'justify'};
1518:
1519: if ($target eq 'tex') {
1520: $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
1521: }
1522: $gnuplot_input .= $/;
1523: }
1524: if ($target eq 'tex') {
1525: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1526: $gnuplot_input .="\n";
1527: }
1528: # curves
1529: $gnuplot_input .= 'plot ';
1530: for (my $i = 0;$i<=$#curves;$i++) {
1531: $curve = $curves[$i];
1532: $gnuplot_input.= ', ' if ($i > 0);
1533: if ($target eq 'tex') {
1534: $curve->{'linewidth'} *= 2;
1535: }
1536: if (exists($curve->{'function'})) {
1537: $gnuplot_input.=
1538: $curve->{'function'}.' title "'.
1539: $curve->{'name'}.'" with '.
1540: $curve->{'linestyle'};
1541:
1542: if (($curve->{'linestyle'} eq 'points') ||
1543: ($curve->{'linestyle'} eq 'linespoints') ||
1544: ($curve->{'linestyle'} eq 'errorbars') ||
1545: ($curve->{'linestyle'} eq 'xerrorbars') ||
1546: ($curve->{'linestyle'} eq 'yerrorbars') ||
1547: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1548: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1549: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1550: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1551: $gnuplot_input.= ' '.$curve->{'limit'};
1552: } elsif ($curve->{'linetype'} ne '' &&
1553: $curve->{'linestyle'} eq 'lines') {
1554: $gnuplot_input.= ' linetype ';
1555: $gnuplot_input.= $linetypes{$curve->{'linetype'}};
1556: $gnuplot_input.= ' linecolor rgb "';
1557: # convert color from xaaaaaa to #aaaaaa
1558: $curve->{'color'} =~ s/^x/#/;
1559: $gnuplot_input.= $curve->{'color'}.'"';
1560: }
1561: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
1562:
1563: } elsif (exists($curve->{'data'})) {
1564: # Store data values in $datatext
1565: my $datatext = '';
1566: # get new filename
1567: my $datafilename = "$tmpdir/$filename.data.$i";
1568: my $fh=Apache::File->new(">$datafilename");
1569: # Compile data
1570: my @Data = @{$curve->{'data'}};
1571: my @Data0 = @{$Data[0]};
1572: for (my $i =0; $i<=$#Data0; $i++) {
1573: my $dataset;
1574: foreach $dataset (@Data) {
1575: $datatext .= $dataset->[$i] . ' ';
1576: }
1577: $datatext .= $/;
1578: }
1579: # write file
1580: print $fh $datatext;
1581: close($fh);
1582: # generate gnuplot text
1583: $gnuplot_input.= '"'.$datafilename.'" title "'.
1584: $curve->{'name'}.'" with '.
1585: $curve->{'linestyle'};
1586: if (($curve->{'linestyle'} eq 'points') ||
1587: ($curve->{'linestyle'} eq 'linespoints') ||
1588: ($curve->{'linestyle'} eq 'errorbars') ||
1589: ($curve->{'linestyle'} eq 'xerrorbars') ||
1590: ($curve->{'linestyle'} eq 'yerrorbars') ||
1591: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1592: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1593: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1594: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1595: $gnuplot_input.= ' '.$curve->{'limit'};
1596: } elsif ($curve->{'linetype'} ne '' &&
1597: $curve->{'linestyle'} eq 'lines') {
1598: $gnuplot_input.= ' linetype ';
1599: $gnuplot_input.= $linetypes{$curve->{'linetype'}};
1600: $gnuplot_input.= ' linecolor rgb "';
1601: # convert color from xaaaaaa to #aaaaaa
1602: $curve->{'color'} =~ s/^x/#/;
1603: $gnuplot_input.= $curve->{'color'}.'"';
1604: }
1605: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
1606: }
1607: }
1608: # Write the output to a file.
1609: open (my $fh,">$tmpdir$filename.data");
1610: binmode($fh, ":utf8");
1611: print $fh $gnuplot_input;
1612: close($fh);
1613: # That's all folks.
1614: return ;
1615: }
1616:
1617: #---------------------------------------------- check_inputs
1618: sub check_inputs {
1619: ## Note: no inputs, no outputs - this acts only on global variables.
1620: ## Make sure we have all the input we need:
1621: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1622: if (! %key ) {} # No key for this plot, thats okay
1623: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1624: if (! defined($title )) {} # No title for this plot, thats okay
1625: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1626: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1627: if ($#labels < 0) { } # No labels for this plot, thats okay
1628: if ($#curves < 0) {
1629: &Apache::lonxml::warning("No curves specified for plot!!!!");
1630: return '';
1631: }
1632: my $curve;
1633: foreach $curve (@curves) {
1634: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1635: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1636: return '';
1637: }
1638: }
1639: }
1640:
1641: #------------------------------------------------ make_edit
1642: sub edit_attributes {
1643: my ($target,$token,$defaults,$keys) = @_;
1644: my ($result,@keys);
1645: if ($keys && ref($keys) eq 'ARRAY') {
1646: @keys = @$keys;
1647: } else {
1648: @keys = sort(keys(%$defaults));
1649: }
1650: foreach my $attr (@keys) {
1651: # append a ' ' to the description if it doesn't have one already.
1652: my $description = $defaults->{$attr}->{'description'};
1653: $description .= ' ' if ($description !~ / $/);
1654: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1655: $result .= &Apache::edit::text_arg
1656: ($description,$attr,$token,
1657: $defaults->{$attr}->{'size'});
1658: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1659: $result .= &Apache::edit::select_or_text_arg
1660: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1661: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1662: $result .= &Apache::edit::select_or_text_arg
1663: ($description,$attr,['on','off'],$token);
1664: }
1665: $result .= '<br />';
1666: }
1667: return $result;
1668: }
1669:
1670:
1671: ###################################################################
1672: ## ##
1673: ## Insertion functions for editing plots ##
1674: ## ##
1675: ###################################################################
1676:
1677: sub insert_gnuplot {
1678: my $result = '';
1679: # plot attributes
1680: $result .= "\n<gnuplot ";
1681: foreach my $attr (keys(%gnuplot_defaults)) {
1682: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1683: }
1684: $result .= ">";
1685: # Add the components (most are commented out for simplicity)
1686: # $result .= &insert_key();
1687: # $result .= &insert_axis();
1688: # $result .= &insert_title();
1689: # $result .= &insert_xlabel();
1690: # $result .= &insert_ylabel();
1691: $result .= &insert_curve();
1692: # close up the <gnuplot>
1693: $result .= "\n</gnuplot>";
1694: return $result;
1695: }
1696:
1697: sub insert_tics {
1698: my $result;
1699: $result .= &insert_xtics() . &insert_ytics;
1700: return $result;
1701: }
1702:
1703: sub insert_xtics {
1704: my $result;
1705: $result .= "\n <xtics ";
1706: foreach my $attr (keys(%tic_defaults)) {
1707: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1708: }
1709: $result .= "/>";
1710: return $result;
1711: }
1712:
1713: sub insert_ytics {
1714: my $result;
1715: $result .= "\n <ytics ";
1716: foreach my $attr (keys(%tic_defaults)) {
1717: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1718: }
1719: $result .= "/>";
1720: return $result;
1721: }
1722:
1723: sub insert_key {
1724: my $result;
1725: $result .= "\n <key ";
1726: foreach my $attr (keys(%key_defaults)) {
1727: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1728: }
1729: $result .= " />";
1730: return $result;
1731: }
1732:
1733: sub insert_axis{
1734: my $result;
1735: $result .= "\n <axis ";
1736: foreach my $attr (keys(%axis_defaults)) {
1737: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1738: }
1739: $result .= " />";
1740: return $result;
1741: }
1742:
1743: sub insert_title { return "\n <title></title>"; }
1744: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1745: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1746:
1747: sub insert_label {
1748: my $result;
1749: $result .= "\n <label ";
1750: foreach my $attr (keys(%label_defaults)) {
1751: $result .= "\n $attr=\"".
1752: $label_defaults{$attr}->{'default'}."\"";
1753: }
1754: $result .= "></label>";
1755: return $result;
1756: }
1757:
1758: sub insert_curve {
1759: my $result;
1760: $result .= "\n <curve ";
1761: foreach my $attr (keys(%curve_defaults)) {
1762: $result .= "\n $attr=\"".
1763: $curve_defaults{$attr}->{'default'}."\"";
1764: }
1765: $result .= " >";
1766: $result .= &insert_data().&insert_data()."\n </curve>";
1767: }
1768:
1769: sub insert_function {
1770: my $result;
1771: $result .= "\n <function></function>";
1772: return $result;
1773: }
1774:
1775: sub insert_data {
1776: my $result;
1777: $result .= "\n <data></data>";
1778: return $result;
1779: }
1780:
1781: ##----------------------------------------------------------------------
1782: 1;
1783: __END__
1784:
1785:
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