Annotation of loncom/xml/lonplot.pm, revision 1.53
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.53 ! matthew 4: # $Id: lonplot.pm,v 1.52 2002/02/27 22:17:06 matthew Exp $
1.1 matthew 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: #
1.3 matthew 28: # 12/15/01 Matthew
1.31 matthew 29: # 12/17 12/18 12/19 12/20 12/21 12/27 12/28 12/30 12/31 Matthew
30: # 01/01/02 Matthew
1.35 matthew 31: # 01/02 01/03 01/04 01/07 01/08 01/09 Matthew
1.52 matthew 32: # 01/21 02/05 02/06 2/28Matthew
1.35 matthew 33:
1.1 matthew 34: package Apache::lonplot;
1.10 matthew 35:
1.1 matthew 36: use strict;
1.10 matthew 37: use Apache::File;
1.1 matthew 38: use Apache::response;
1.2 matthew 39: use Apache::lonxml;
1.20 matthew 40: use Apache::edit;
1.10 matthew 41:
1.33 harris41 42: BEGIN {
1.47 matthew 43: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
1.1 matthew 44: }
45:
1.10 matthew 46: ##
47: ## Description of data structures:
48: ##
49: ## %plot %key %axis
50: ## --------------------------
51: ## height title color
52: ## width box xmin
53: ## bgcolor pos xmax
54: ## fgcolor ymin
55: ## transparent ymax
56: ## grid
57: ## border
58: ## font
1.19 matthew 59: ## align
1.10 matthew 60: ##
61: ## @labels: $labels[$i] = \%label
62: ## %label: text, xpos, ypos, justify
1.14 matthew 63: ##
1.10 matthew 64: ## @curves: $curves[$i] = \%curve
1.14 matthew 65: ## %curve: name, linestyle, ( function | data )
1.10 matthew 66: ##
67: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
68: ## [y1,y2,y3,y4] ]
69: ##
1.21 matthew 70:
71: ###################################################################
72: ## ##
73: ## Tests used in checking the validitity of input ##
74: ## ##
75: ###################################################################
1.29 matthew 76:
1.32 matthew 77: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
78: # is longer than this, it will be truncated.
79:
1.29 matthew 80: my %linestyles =
81: (
82: lines => 2, # Maybe this will be used in the future
83: linespoints => 2, # to check on whether or not they have
84: dots => 2, # supplied enough <data></data> fields
85: points => 2, # to use the given line style. But for
86: steps => 2, # now there are more important things
87: fsteps => 2, # for me to deal with.
88: histeps => 2,
1.34 matthew 89: errorbars => 3,
90: xerrorbars => [3,4],
91: yerrorbars => [3,4],
1.35 matthew 92: xyerrorbars => [4,6],
1.34 matthew 93: boxes => 3,
1.35 matthew 94: # boxerrorbars => [3,4,5],
95: # boxxyerrorbars => [4,6,7],
96: # financebars => 5,
97: # candlesticks => 5,
98: vector => 4
1.29 matthew 99: );
100:
1.11 matthew 101: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 102: my $real_test =
103: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.11 matthew 104: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
1.1 matthew 105: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 106: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 107: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
1.29 matthew 108: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.15 matthew 109: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/};
1.21 matthew 110:
111: ###################################################################
112: ## ##
113: ## Attribute metadata ##
114: ## ##
115: ###################################################################
1.47 matthew 116: my @gnuplot_edit_order =
1.37 matthew 117: qw/bgcolor fgcolor height width font transparent grid border align/;
1.48 matthew 118:
119: my $gnuplot_help_text = <<"ENDPLOTHELP";
120: <p>
121: The <b>gnuplot</b> tag allows an author to design a plot which can
122: be created on the fly. This is intended for use in homework problems
123: where each student needs to see a distinct plot. It can be used in
124: conjunction with a <b>script</b> tag to generate random plots.
125: </p><p>
126: A <b>gnuplot</b> tag can contain the following sub-tags:
127: </p>
128: <dl>
129: <dt> Plot Label
130: <dd> Allows you to place text at a given (x,y) coordinate on the plot.
131: <dt> Plot Title
132: <dd> The title of the plot
133: <dt> Plot Xlabel
134: <dd> The label on the horizontal axis of the plot
135: <dt> Plot Ylabel
136: <dd> The label on the vertical axis of the plot
137: <dt> Plot Axes
138: <dd> allows specification of the x and y ranges displayed in the plot
139: <dt> Plot Key
140: <dd> Lists the functions displayed in the plot.
141: <dt> Plot Curve
142: <dd> Sets the data used in the plot.
143: <dt> Plot Tics
144: <dd> Allows specification of the x and y coordinate 'tics' on the axes.
145: This is mostly used to adjust the grid lines when a grid is displayed.
146: </dl>
147: ENDPLOTHELP
148:
1.47 matthew 149: my %gnuplot_defaults =
1.1 matthew 150: (
1.20 matthew 151: height => {
152: default => 200,
153: test => $int_test,
1.29 matthew 154: description => 'height of image (pixels)',
1.38 matthew 155: edit_type => 'entry',
156: size => '10'
1.20 matthew 157: },
158: width => {
159: default => 200,
160: test => $int_test,
1.29 matthew 161: description => 'width of image (pixels)',
1.38 matthew 162: edit_type => 'entry',
163: size => '10'
1.20 matthew 164: },
165: bgcolor => {
166: default => 'xffffff',
167: test => $color_test,
168: description => 'background color of image (xffffff)',
1.38 matthew 169: edit_type => 'entry',
170: size => '10'
1.20 matthew 171: },
172: fgcolor => {
173: default => 'x000000',
174: test => $color_test,
175: description => 'foreground color of image (x000000)',
1.38 matthew 176: edit_type => 'entry',
177: size => '10'
1.20 matthew 178: },
179: transparent => {
180: default => 'off',
181: test => $onoff_test,
1.34 matthew 182: description => 'Transparent image',
1.45 matthew 183: edit_type => 'onoff'
1.20 matthew 184: },
185: grid => {
186: default => 'off',
187: test => $onoff_test,
1.34 matthew 188: description => 'Display grid',
1.45 matthew 189: edit_type => 'onoff'
1.20 matthew 190: },
191: border => {
192: default => 'on',
193: test => $onoff_test,
1.34 matthew 194: description => 'Draw border around plot',
1.45 matthew 195: edit_type => 'onoff'
1.20 matthew 196: },
197: font => {
198: default => 'medium',
199: test => $sml_test,
200: description => 'Size of font to use',
201: edit_type => 'choice',
202: choices => ['small','medium','large']
203: },
204: align => {
205: default => 'left',
206: test => sub {$_[0]=~/^(left|right|center)$/},
207: description => 'alignment for image in html',
208: edit_type => 'choice',
209: choices => ['left','right','center']
210: }
1.1 matthew 211: );
212:
213: my %key_defaults =
214: (
1.20 matthew 215: title => {
216: default => '',
217: test => $words_test,
218: description => 'Title of key',
1.38 matthew 219: edit_type => 'entry',
220: size => '40'
1.20 matthew 221: },
222: box => {
223: default => 'off',
224: test => $onoff_test,
225: description => 'Draw a box around the key?',
1.45 matthew 226: edit_type => 'onoff'
1.20 matthew 227: },
228: pos => {
229: default => 'top right',
230: test => $key_pos_test,
231: description => 'position of the key on the plot',
232: edit_type => 'choice',
233: choices => ['top left','top right','bottom left','bottom right',
234: 'outside','below']
235: }
1.1 matthew 236: );
237:
238: my %label_defaults =
239: (
1.20 matthew 240: xpos => {
241: default => 0,
242: test => $real_test,
243: description => 'x position of label (graph coordinates)',
1.38 matthew 244: edit_type => 'entry',
245: size => '10'
1.20 matthew 246: },
247: ypos => {
248: default => 0,
249: test => $real_test,
250: description => 'y position of label (graph coordinates)',
1.38 matthew 251: edit_type => 'entry',
252: size => '10'
1.20 matthew 253: },
254: justify => {
255: default => 'left',
256: test => sub {$_[0]=~/^(left|right|center)$/},
257: description => 'justification of the label text on the plot',
258: edit_type => 'choice',
259: choices => ['left','right','center']
260: }
1.1 matthew 261: );
262:
1.45 matthew 263: my @tic_edit_order = ('location','mirror','start','increment','end');
264: my %tic_defaults =
265: (
266: location => {
267: default => 'border',
268: test => sub {$_[0]=~/^(border|axis)$/},
269: description => 'Location of tick marks',
270: edit_type => 'choice',
271: choices => ['border','axis']
272: },
273: mirror => {
274: default => 'on',
275: test => $onoff_test,
276: description => 'mirror ticks on opposite axis?',
277: edit_type => 'onoff'
278: },
279: start => {
280: default => '-10.0',
281: test => $real_test,
282: description => 'Start ticks at',
283: edit_type => 'entry',
284: size => '10'
285: },
286: increment => {
287: default => '1.0',
288: test => $real_test,
289: description => 'Place a tick every',
290: edit_type => 'entry',
291: size => '10'
292: },
293: end => {
294: default => ' 10.0',
295: test => $real_test,
296: description => 'Stop ticks at ',
297: edit_type => 'entry',
298: size => '10'
299: },
300: );
301:
1.1 matthew 302: my %axis_defaults =
303: (
1.28 matthew 304: color => {
1.20 matthew 305: default => 'x000000',
306: test => $color_test,
307: description => 'color of axes (x000000)',
1.38 matthew 308: edit_type => 'entry',
309: size => '10'
1.20 matthew 310: },
311: xmin => {
312: default => '-10.0',
313: test => $real_test,
314: description => 'minimum x-value shown in plot',
1.38 matthew 315: edit_type => 'entry',
316: size => '10'
1.20 matthew 317: },
318: xmax => {
319: default => ' 10.0',
320: test => $real_test,
321: description => 'maximum x-value shown in plot',
1.38 matthew 322: edit_type => 'entry',
323: size => '10'
1.20 matthew 324: },
325: ymin => {
326: default => '-10.0',
327: test => $real_test,
328: description => 'minimum y-value shown in plot',
1.38 matthew 329: edit_type => 'entry',
330: size => '10'
1.20 matthew 331: },
332: ymax => {
333: default => ' 10.0',
334: test => $real_test,
335: description => 'maximum y-value shown in plot',
1.38 matthew 336: edit_type => 'entry',
337: size => '10'
1.20 matthew 338: }
1.1 matthew 339: );
340:
1.48 matthew 341: my $curve_help_text = <<"ENDCURVEHELP";
342: The <b>curve</b> tag is where you set the data to be plotted by gnuplot.
343: There are two ways of entering the information:
344: <dl>
345: <dt> Curve Data
346: <dd> Using a <b>data</b> tag you can specify the numbers used to produce
347: the plot.
348: <p>
349: By default, two <b>data</b> tags will be available in a plot. The
350: first will specify X coordinates of the data and the second will
351: give the Y coordinates of the data. When working with a linestyle that
352: requires more than two data sets, inserting another <b>data</b> tag is
353: required. Unfortunately, you must make sure the <b>data</b> tags appear
354: in the order gnuplot expects the data.
355: </p><p>
356: Specifying the data should usually be done with a perl variable or array,
357: such as \@Xdata and \@Ydata. You may also specify numerical data seperated
358: by commas. Again, the order of the <b>data</b> tags is important. The
359: first tag will be the X data and the second will be the Y data.
360: </p>
361: <dt> Curve Function
362: <dd> The <b>function</b> tag allows you to specify the curve to be
363: plotted as a formula that gnuplot can understand. Be careful using this
364: tag - it is surprisingly easy to give gnuplot a function it cannot deal
365: with properly. Be explicit: 2*sin(2*3.141592*x/4) will work but
366: 2sin(2*3.141592x/4) will not. If you do not receive any errors in the
367: gnuplot data but still do not have an image produced, it is likely there
368: is an error in your <b>function</b> tag.
369: </dl>
370: ENDCURVEHELP
371:
1.1 matthew 372: my %curve_defaults =
373: (
1.20 matthew 374: color => {
375: default => 'x000000',
376: test => $color_test,
377: description => 'color of curve (x000000)',
1.38 matthew 378: edit_type => 'entry',
379: size => '10'
1.20 matthew 380: },
381: name => {
382: default => '',
383: test => $words_test,
384: description => 'name of curve to appear in key',
1.38 matthew 385: edit_type => 'entry',
386: size => '20'
1.20 matthew 387: },
388: linestyle => {
389: default => 'lines',
390: test => $linestyle_test,
1.35 matthew 391: description => 'Line style',
1.20 matthew 392: edit_type => 'choice',
1.38 matthew 393: choices => [keys(%linestyles)]
1.20 matthew 394: }
1.1 matthew 395: );
396:
1.21 matthew 397: ###################################################################
398: ## ##
399: ## parsing and edit rendering ##
400: ## ##
401: ###################################################################
1.45 matthew 402: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 403:
1.47 matthew 404: sub start_gnuplot {
1.23 matthew 405: %plot = (); %key = (); %axis = ();
1.10 matthew 406: $title = undef; $xlabel = undef; $ylabel = undef;
407: $#labels = -1; $#curves = -1;
1.45 matthew 408: %xtics = (); %ytics = ();
1.6 matthew 409: #
1.1 matthew 410: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
411: my $result='';
1.25 matthew 412: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 413: ('title','xlabel','ylabel','key','axis','label','curve',
414: 'xtics','ytics'));
1.29 matthew 415: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 416: if ($target eq 'web' || $target eq 'tex') {
1.47 matthew 417: my $inside = &Apache::lonxml::get_all_text("/gnuplot",$$parser[-1]);
1.17 matthew 418: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
1.29 matthew 419: &Apache::lonxml::newparser($parser,\$inside);
1.47 matthew 420: &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 421: $tagstack->[-1]);
1.20 matthew 422: } elsif ($target eq 'edit') {
1.47 matthew 423: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
1.48 matthew 424: $result .= &make_javascript();
425: $result .= &help_win($gnuplot_help_text);
1.47 matthew 426: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
427: \@gnuplot_edit_order);
1.20 matthew 428: } elsif ($target eq 'modified') {
429: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 430: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 431: if ($constructtag) {
432: $result = &Apache::edit::rebuild_tag($token);
433: }
1.4 matthew 434: }
1.21 matthew 435: return $result;
1.1 matthew 436: }
437:
1.47 matthew 438: sub end_gnuplot {
1.1 matthew 439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
440: pop @Apache::lonxml::namespace;
1.4 matthew 441: &Apache::lonxml::deregister('Apache::lonplot',
442: ('title','xlabel','ylabel','key','axis','label','curve'));
443: my $result = '';
1.51 matthew 444: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 445: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 446: ##
447: ## Determine filename
1.4 matthew 448: my $tmpdir = '/home/httpd/perl/tmp/';
1.12 matthew 449: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1.29 matthew 450: '_'.time.'_'.$$.int(rand(1000)).'_plot.data';
1.4 matthew 451: ## Write the plot description to the file
1.51 matthew 452: &write_gnuplot_file($tmpdir,$filename,$target);
1.4 matthew 453: ## return image tag for the plot
1.51 matthew 454: if ($target eq 'web') {
455: $result .= <<"ENDIMAGE";
1.53 ! matthew 456: <img src = "/cgi-bin/plot.gif?file=$filename&output=gif"
1.16 matthew 457: width = "$plot{'width'}"
458: height = "$plot{'height'}"
459: align = "$plot{'align'}"
1.47 matthew 460: alt = "image should be /cgi-bin/plot.gif?$filename" />
1.12 matthew 461: ENDIMAGE
1.51 matthew 462: } elsif ($target eq 'tex') {
1.53 ! matthew 463: &Apache::lonnet::ssi('cgi-bin/plot.gif?file=$filename'.
! 464: '&output=eps');
1.51 matthew 465: $result = "$filename.eps";
466: }
1.20 matthew 467: } elsif ($target eq 'edit') {
1.21 matthew 468: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 469: }
1.1 matthew 470: return $result;
471: }
1.2 matthew 472:
1.45 matthew 473:
474: ##--------------------------------------------------------------- xtics
475: sub start_xtics {
476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
477: my $result='';
1.51 matthew 478: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 479: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
480: $tagstack->[-1]);
481: } elsif ($target eq 'edit') {
482: $result .= &Apache::edit::tag_start($target,$token,'xtics');
483: $result .= &edit_attributes($target,$token,\%tic_defaults,
484: \@tic_edit_order);
485: } elsif ($target eq 'modified') {
486: my $constructtag=&Apache::edit::get_new_args
487: ($token,$parstack,$safeeval,keys(%tic_defaults));
488: if ($constructtag) {
489: $result = &Apache::edit::rebuild_tag($token);
490: }
491: }
492: return $result;
493: }
494:
495: sub end_xtics {
496: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
497: my $result = '';
1.51 matthew 498: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 499: } elsif ($target eq 'edit') {
500: $result.=&Apache::edit::tag_end($target,$token);
501: }
502: return $result;
503: }
504:
505: ##--------------------------------------------------------------- ytics
506: sub start_ytics {
507: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
508: my $result='';
1.51 matthew 509: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 510: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
511: $tagstack->[-1]);
512: } elsif ($target eq 'edit') {
513: $result .= &Apache::edit::tag_start($target,$token,'ytics');
514: $result .= &edit_attributes($target,$token,\%tic_defaults,
515: \@tic_edit_order);
516: } elsif ($target eq 'modified') {
517: my $constructtag=&Apache::edit::get_new_args
518: ($token,$parstack,$safeeval,keys(%tic_defaults));
519: if ($constructtag) {
520: $result = &Apache::edit::rebuild_tag($token);
521: }
522: }
523: return $result;
524: }
525:
526: sub end_ytics {
527: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
528: my $result = '';
1.51 matthew 529: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 530: } elsif ($target eq 'edit') {
531: $result.=&Apache::edit::tag_end($target,$token);
532: }
533: return $result;
534: }
535:
536:
1.1 matthew 537: ##----------------------------------------------------------------- key
538: sub start_key {
539: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
540: my $result='';
1.51 matthew 541: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 542: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 543: $tagstack->[-1]);
1.20 matthew 544: } elsif ($target eq 'edit') {
1.25 matthew 545: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 546: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 547: } elsif ($target eq 'modified') {
548: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 549: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 550: if ($constructtag) {
551: $result = &Apache::edit::rebuild_tag($token);
552: }
1.4 matthew 553: }
1.1 matthew 554: return $result;
555: }
556:
557: sub end_key {
558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
559: my $result = '';
1.51 matthew 560: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 561: } elsif ($target eq 'edit') {
1.21 matthew 562: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 563: }
1.1 matthew 564: return $result;
565: }
1.21 matthew 566:
1.1 matthew 567: ##------------------------------------------------------------------- title
568: sub start_title {
569: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
570: my $result='';
1.51 matthew 571: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 572: $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.49 matthew 573: $title =~ s/\n/ /g;
1.32 matthew 574: if (length($title) > $max_str_len) {
575: $title = substr($title,0,$max_str_len);
576: }
1.20 matthew 577: } elsif ($target eq 'edit') {
1.25 matthew 578: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.22 matthew 579: my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.39 matthew 580: $result.=&Apache::edit::end_row().
581: &Apache::edit::start_spanning_row().
1.30 matthew 582: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 583: } elsif ($target eq 'modified') {
1.29 matthew 584: my $text=$$parser[-1]->get_text("/title");
1.42 matthew 585: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 586: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 587: }
1.1 matthew 588: return $result;
589: }
590:
591: sub end_title {
592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
593: my $result = '';
1.51 matthew 594: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 595: } elsif ($target eq 'edit') {
1.27 matthew 596: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 597: }
1.1 matthew 598: return $result;
599: }
600: ##------------------------------------------------------------------- xlabel
601: sub start_xlabel {
602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
603: my $result='';
1.51 matthew 604: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 605: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.49 matthew 606: $xlabel =~ s/\n/ /g;
1.32 matthew 607: if (length($xlabel) > $max_str_len) {
608: $xlabel = substr($xlabel,0,$max_str_len);
609: }
1.20 matthew 610: } elsif ($target eq 'edit') {
1.25 matthew 611: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.22 matthew 612: my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.39 matthew 613: $result.=&Apache::edit::end_row().
614: &Apache::edit::start_spanning_row().
1.30 matthew 615: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 616: } elsif ($target eq 'modified') {
1.29 matthew 617: my $text=$$parser[-1]->get_text("/xlabel");
1.42 matthew 618: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 619: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 620: }
1.1 matthew 621: return $result;
622: }
623:
624: sub end_xlabel {
625: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
626: my $result = '';
1.51 matthew 627: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 628: } elsif ($target eq 'edit') {
1.27 matthew 629: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 630: }
1.1 matthew 631: return $result;
632: }
1.21 matthew 633:
1.1 matthew 634: ##------------------------------------------------------------------- ylabel
635: sub start_ylabel {
636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
637: my $result='';
1.51 matthew 638: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 639: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.49 matthew 640: $ylabel =~ s/\n/ /g;
1.32 matthew 641: if (length($ylabel) > $max_str_len) {
642: $ylabel = substr($ylabel,0,$max_str_len);
643: }
1.20 matthew 644: } elsif ($target eq 'edit') {
1.25 matthew 645: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.22 matthew 646: my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.39 matthew 647: $result .= &Apache::edit::end_row().
648: &Apache::edit::start_spanning_row().
1.30 matthew 649: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 650: } elsif ($target eq 'modified') {
1.29 matthew 651: my $text=$$parser[-1]->get_text("/ylabel");
1.42 matthew 652: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 653: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 654: }
1.1 matthew 655: return $result;
656: }
657:
658: sub end_ylabel {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660: my $result = '';
1.51 matthew 661: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 662: } elsif ($target eq 'edit') {
1.27 matthew 663: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 664: }
1.1 matthew 665: return $result;
666: }
1.21 matthew 667:
1.1 matthew 668: ##------------------------------------------------------------------- label
669: sub start_label {
670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
671: my $result='';
1.51 matthew 672: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 673: my %label;
674: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 675: $tagstack->[-1]);
1.32 matthew 676: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.49 matthew 677: $text =~ s/\n/ /g;
1.32 matthew 678: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
679: $label{'text'} = $text;
1.17 matthew 680: push(@labels,\%label);
1.20 matthew 681: } elsif ($target eq 'edit') {
1.25 matthew 682: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 683: $result .= &edit_attributes($target,$token,\%label_defaults);
1.22 matthew 684: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.39 matthew 685: $result .= &Apache::edit::end_row().
686: &Apache::edit::start_spanning_row().
1.30 matthew 687: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 688: } elsif ($target eq 'modified') {
1.42 matthew 689: &Apache::edit::get_new_args
1.24 matthew 690: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 691: $result.=&Apache::edit::rebuild_tag($token);
1.22 matthew 692: my $text=$$parser[-1]->get_text("/label");
1.21 matthew 693: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 694: }
1.1 matthew 695: return $result;
696: }
697:
698: sub end_label {
699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
700: my $result = '';
1.51 matthew 701: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 702: } elsif ($target eq 'edit') {
1.21 matthew 703: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 704: }
1.1 matthew 705: return $result;
706: }
707:
708: ##------------------------------------------------------------------- curve
709: sub start_curve {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
711: my $result='';
1.25 matthew 712: &Apache::lonxml::register('Apache::lonplot',('function','data'));
713: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 714: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 715: my %curve;
716: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 717: $tagstack->[-1]);
1.17 matthew 718: push (@curves,\%curve);
1.20 matthew 719: } elsif ($target eq 'edit') {
1.26 matthew 720: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.48 matthew 721: $result .= &help_win($curve_help_text);
1.21 matthew 722: $result .= &edit_attributes($target,$token,\%curve_defaults);
1.20 matthew 723: } elsif ($target eq 'modified') {
724: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 725: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 726: if ($constructtag) {
727: $result = &Apache::edit::rebuild_tag($token);
728: $result.= &Apache::edit::handle_insert();
729: }
1.4 matthew 730: }
1.1 matthew 731: return $result;
732: }
733:
734: sub end_curve {
735: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
736: my $result = '';
1.25 matthew 737: pop @Apache::lonxml::namespace;
738: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 739: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 740: } elsif ($target eq 'edit') {
1.21 matthew 741: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 742: }
1.1 matthew 743: return $result;
744: }
1.21 matthew 745:
1.1 matthew 746: ##------------------------------------------------------------ curve function
747: sub start_function {
748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
749: my $result='';
1.51 matthew 750: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 751: if (exists($curves[-1]->{'data'})) {
752: &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
753: delete $curves[-1]->{'data'} ;
754: }
755: $curves[-1]->{'function'} =
756: &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.20 matthew 757: } elsif ($target eq 'edit') {
1.37 matthew 758: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.22 matthew 759: my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.39 matthew 760: $result .= &Apache::edit::end_row().
761: &Apache::edit::start_spanning_row().
1.30 matthew 762: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 763: } elsif ($target eq 'modified') {
1.42 matthew 764: $result.=&Apache::edit::rebuild_tag($token);
1.20 matthew 765: my $text=$$parser[-1]->get_text("/function");
766: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 767: }
1.1 matthew 768: return $result;
769: }
770:
771: sub end_function {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
773: my $result = '';
1.51 matthew 774: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 775: } elsif ($target eq 'edit') {
1.26 matthew 776: $result .= &Apache::edit::end_table();
1.4 matthew 777: }
1.1 matthew 778: return $result;
779: }
1.21 matthew 780:
1.1 matthew 781: ##------------------------------------------------------------ curve data
782: sub start_data {
783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
784: my $result='';
1.51 matthew 785: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 786: if (exists($curves[-1]->{'function'})) {
787: &Apache::lonxml::warning('Use of <data> precludes use of .'.
788: '<function>. The <function> will be omitted in favor of '.
789: 'the <data> declaration.');
790: delete($curves[-1]->{'function'});
791: }
792: my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.40 matthew 793: # Deal with cases where we're given an array...
794: if ($datatext =~ /^\@/) {
795: $datatext = &Apache::run::run('return "'.$datatext.'"',
796: $safeeval,1);
797: }
1.49 matthew 798: $datatext =~ s/\s+/ /g;
1.17 matthew 799: # Need to do some error checking on the @data array -
800: # make sure it's all numbers and make sure each array
801: # is of the same length.
802: my @data;
1.35 matthew 803: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 804: @data = split /,/,$datatext;
805: } else { # Assume it's space seperated.
806: @data = split / /,$datatext;
807: }
808: for (my $i=0;$i<=$#data;$i++) {
809: # Check that it's non-empty
1.19 matthew 810: if (! defined($data[$i])) {
811: &Apache::lonxml::warning(
812: 'undefined <data> value. Replacing with '.
813: ' pi/e = 1.15572734979092');
814: $data[$i] = 1.15572734979092;
815: }
1.17 matthew 816: # Check that it's a number
1.19 matthew 817: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
818: &Apache::lonxml::warning(
819: 'Bad <data> value of '.$data[$i].' Replacing with '.
820: ' pi/e = 1.15572734979092');
821: $data[$i] = 1.15572734979092;
822: }
1.17 matthew 823: }
1.35 matthew 824: # complain if the number of data points is not the same as
825: # in previous sets of data.
1.36 matthew 826: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 827: &Apache::lonxml::warning
828: ('Number of data points is not consistent with previous '.
829: 'number of data points');
830: }
1.17 matthew 831: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 832: } elsif ($target eq 'edit') {
1.37 matthew 833: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.22 matthew 834: my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.39 matthew 835: $result .= &Apache::edit::end_row().
836: &Apache::edit::start_spanning_row().
1.30 matthew 837: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 838: } elsif ($target eq 'modified') {
1.42 matthew 839: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 840: my $text=$$parser[-1]->get_text("/data");
841: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 842: }
1.1 matthew 843: return $result;
844: }
845:
846: sub end_data {
847: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
848: my $result = '';
1.51 matthew 849: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 850: } elsif ($target eq 'edit') {
1.26 matthew 851: $result .= &Apache::edit::end_table();
1.4 matthew 852: }
1.1 matthew 853: return $result;
854: }
855:
856: ##------------------------------------------------------------------- axis
857: sub start_axis {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
859: my $result='';
1.51 matthew 860: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 861: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
862: $tagstack->[-1]);
1.20 matthew 863: } elsif ($target eq 'edit') {
1.25 matthew 864: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.21 matthew 865: $result .= &edit_attributes($target,$token,\%axis_defaults);
1.20 matthew 866: } elsif ($target eq 'modified') {
1.29 matthew 867: my $constructtag=&Apache::edit::get_new_args
868: ($token,$parstack,$safeeval,keys(%axis_defaults));
869: if ($constructtag) {
870: $result = &Apache::edit::rebuild_tag($token);
871: }
1.4 matthew 872: }
1.1 matthew 873: return $result;
874: }
875:
876: sub end_axis {
877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
878: my $result = '';
1.51 matthew 879: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 880: } elsif ($target eq 'edit') {
1.21 matthew 881: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 882: } elsif ($target eq 'modified') {
1.4 matthew 883: }
1.1 matthew 884: return $result;
885: }
886:
1.21 matthew 887: ###################################################################
888: ## ##
889: ## Utility Functions ##
890: ## ##
891: ###################################################################
892:
1.13 matthew 893: ##----------------------------------------------------------- set_defaults
894: sub set_defaults {
1.21 matthew 895: my ($var,$defaults) = @_;
1.13 matthew 896: my $key;
1.24 matthew 897: foreach $key (keys(%$defaults)) {
1.13 matthew 898: $var->{$key} = $defaults->{$key}->{'default'};
899: }
900: }
901:
1.1 matthew 902: ##------------------------------------------------------------------- misc
1.2 matthew 903: sub get_attributes{
1.21 matthew 904: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 905: foreach my $attr (keys(%{$defaults})) {
1.10 matthew 906: $values->{$attr} =
1.15 matthew 907: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1.10 matthew 908: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 909: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 910: next;
911: }
1.10 matthew 912: my $test = $defaults->{$attr}->{'test'};
913: if (! &$test($values->{$attr})) {
1.6 matthew 914: &Apache::lonxml::warning
915: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 916: .$defaults->{$attr}->{'default'} );
917: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 918: }
1.2 matthew 919: }
1.11 matthew 920: return ;
1.6 matthew 921: }
1.40 matthew 922:
1.15 matthew 923: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 924: sub write_gnuplot_file {
1.51 matthew 925: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 926: my $gnuplot_input = '';
1.10 matthew 927: my $curve;
1.6 matthew 928: # Collect all the colors
929: my @Colors;
930: push @Colors, $plot{'bgcolor'};
931: push @Colors, $plot{'fgcolor'};
1.13 matthew 932: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 933: foreach $curve (@curves) {
934: push @Colors, ($curve->{'color'} ne '' ?
935: $curve->{'color'} :
1.13 matthew 936: $plot{'fgcolor'} );
1.6 matthew 937: }
938: # set term
1.51 matthew 939: if ($target eq 'web') {
940: $gnuplot_input .= 'set term gif ';
941: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
942: $gnuplot_input .= $plot{'font'} . ' ';
943: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
944: $gnuplot_input .= "@Colors\n";
945: # set output
946: $gnuplot_input .= "set output\n";
947: } elsif ($target eq 'tex') {
948: $gnuplot_input .= "set term postscript eps monochrome\n";
949: $gnuplot_input .= "set output \"$filename.eps\"\n";
950: }
1.7 matthew 951: # grid
1.10 matthew 952: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 953: # border
1.9 matthew 954: $gnuplot_input .= ($plot{'border'} eq 'on'?
955: 'set border'.$/ :
956: 'set noborder'.$/ ); # title, xlabel, ylabel
1.45 matthew 957: # titles
1.13 matthew 958: $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
959: $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
960: $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
1.45 matthew 961: # tics
962: if (%xtics) {
963: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 964: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 965: $gnuplot_input .= "$xtics{'start'}, ";
966: $gnuplot_input .= "$xtics{'increment'}, ";
967: $gnuplot_input .= "$xtics{'end'}\n";
968: }
969: if (%ytics) {
970: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 971: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 972: $gnuplot_input .= "$ytics{'start'}, ";
973: $gnuplot_input .= "$ytics{'increment'}, ";
974: $gnuplot_input .= "$ytics{'end'}\n";
975: }
976: # axis
1.23 matthew 977: if (%axis) {
1.13 matthew 978: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
979: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 980: }
981: # Key
1.23 matthew 982: if (%key) {
1.9 matthew 983: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
984: if ($key{'title'} ne '') {
1.43 matthew 985: $gnuplot_input .= 'title " '.$key{'title'}.'" ';
1.11 matthew 986: }
987: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 988: } else {
1.9 matthew 989: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 990: }
1.6 matthew 991: # labels
1.10 matthew 992: my $label;
1.6 matthew 993: foreach $label (@labels) {
994: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.9 matthew 995: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
1.6 matthew 996: }
997: # curves
998: $gnuplot_input .= 'plot ';
1.9 matthew 999: for (my $i = 0;$i<=$#curves;$i++) {
1000: $curve = $curves[$i];
1001: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1002: if (exists($curve->{'function'})) {
1.9 matthew 1003: $gnuplot_input.=
1004: $curve->{'function'}.' title "'.
1005: $curve->{'name'}.'" with '.
1006: $curve->{'linestyle'};
1.6 matthew 1007: } elsif (exists($curve->{'data'})) {
1.40 matthew 1008: # Store data values in $datatext
1009: my $datatext = '';
1010: # get new filename
1011: my $datafilename = "$tmpdir/$filename.$i";
1012: my $fh=Apache::File->new(">$datafilename");
1013: # Compile data
1.6 matthew 1014: my @Data = @{$curve->{'data'}};
1.9 matthew 1015: my @Data0 = @{$Data[0]};
1016: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1017: my $dataset;
1.6 matthew 1018: foreach $dataset (@Data) {
1.9 matthew 1019: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1020: }
1.9 matthew 1021: $datatext .= $/;
1.6 matthew 1022: }
1.40 matthew 1023: # write file
1024: print $fh $datatext;
1025: close ($fh);
1026: # generate gnuplot text
1027: $gnuplot_input.= '"'.$datafilename.'" title "'.
1028: $curve->{'name'}.'" with '.
1029: $curve->{'linestyle'};
1.6 matthew 1030: }
1031: }
1.40 matthew 1032: # Write the output to a file.
1033: my $fh=Apache::File->new(">$tmpdir$filename");
1034: print $fh $gnuplot_input;
1035: close($fh);
1036: # That's all folks.
1037: return ;
1.2 matthew 1038: }
1.21 matthew 1039:
1040: #---------------------------------------------- check_inputs
1041: sub check_inputs {
1042: ## Note: no inputs, no outputs - this acts only on global variables.
1043: ## Make sure we have all the input we need:
1.47 matthew 1044: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
1.23 matthew 1045: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1046: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1047: if (! defined($title )) {} # No title for this plot, thats okay
1048: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1049: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1050: if ($#labels < 0) { } # No labels for this plot, thats okay
1051: if ($#curves < 0) {
1052: &Apache::lonxml::warning("No curves specified for plot!!!!");
1053: return '';
1054: }
1055: my $curve;
1056: foreach $curve (@curves) {
1057: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1058: &Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n");
1059: return '';
1060: }
1061: }
1062: }
1063:
1.20 matthew 1064: #------------------------------------------------ make_edit
1065: sub edit_attributes {
1.34 matthew 1066: my ($target,$token,$defaults,$keys) = @_;
1067: my ($result,@keys);
1068: if ($keys && ref($keys) eq 'ARRAY') {
1069: @keys = @$keys;
1070: } else {
1071: @keys = sort(keys(%$defaults));
1072: }
1073: foreach my $attr (@keys) {
1.35 matthew 1074: # append a ' ' to the description if it doesn't have one already.
1075: my $description = $defaults->{$attr}->{'description'};
1076: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1077: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1078: $result .= &Apache::edit::text_arg
1.38 matthew 1079: ($description,$attr,$token,
1080: $defaults->{$attr}->{'size'});
1.20 matthew 1081: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.35 matthew 1082: $result .= &Apache::edit::select_arg
1083: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1084: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.35 matthew 1085: $result .= &Apache::edit::select_arg
1086: ($description,$attr,['on','off'],$token);
1.20 matthew 1087: }
1.25 matthew 1088: $result .= '<br />';
1.20 matthew 1089: }
1090: return $result;
1091: }
1.1 matthew 1092:
1.21 matthew 1093:
1094: ###################################################################
1095: ## ##
1096: ## Insertion functions for editing plots ##
1097: ## ##
1098: ###################################################################
1099:
1.47 matthew 1100: sub insert_gnuplot {
1.29 matthew 1101: my $result = '';
1.20 matthew 1102: # plot attributes
1.50 matthew 1103: $result .= "<gnuplot \n";
1.47 matthew 1104: foreach my $attr (keys(%gnuplot_defaults)) {
1105: $result .= " $attr=\"$gnuplot_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1106: }
1107: $result .= ">\n";
1.47 matthew 1108: # Add the components (most are commented out for simplicity)
1.44 matthew 1109: # $result .= &insert_key();
1110: # $result .= &insert_axis();
1111: # $result .= &insert_title();
1112: # $result .= &insert_xlabel();
1113: # $result .= &insert_ylabel();
1.20 matthew 1114: $result .= &insert_curve();
1.50 matthew 1115: # close up the <gnuplot>
1116: $result .= "</gnuplot>\n";
1.45 matthew 1117: return $result;
1118: }
1119:
1.46 matthew 1120: sub insert_tics {
1121: my $result;
1122: $result .= &insert_xtics() . &insert_ytics;
1123: return $result;
1124: }
1125:
1.45 matthew 1126: sub insert_xtics {
1127: my $result;
1.46 matthew 1128: $result .= "\n <xtics ";
1.45 matthew 1129: foreach my $attr (keys(%tic_defaults)) {
1.46 matthew 1130: $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1131: }
1.46 matthew 1132: $result .= "/>\n";
1.45 matthew 1133: return $result;
1134: }
1135:
1136: sub insert_ytics {
1137: my $result;
1.46 matthew 1138: $result .= "\n <ytics ";
1.45 matthew 1139: foreach my $attr (keys(%tic_defaults)) {
1.46 matthew 1140: $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1141: }
1.46 matthew 1142: $result .= "/>\n";
1.20 matthew 1143: return $result;
1144: }
1145:
1146: sub insert_key {
1147: my $result;
1.46 matthew 1148: $result .= "\n <key \n";
1.30 matthew 1149: foreach my $attr (keys(%key_defaults)) {
1.29 matthew 1150: $result .= " $attr=\"$key_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1151: }
1152: $result .= " />\n";
1153: return $result;
1154: }
1155:
1156: sub insert_axis{
1157: my $result;
1.46 matthew 1158: $result .= "\n <axis ";
1.30 matthew 1159: foreach my $attr (keys(%axis_defaults)) {
1.29 matthew 1160: $result .= " $attr=\"$axis_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1161: }
1162: $result .= " />\n";
1163: return $result;
1164: }
1.28 matthew 1165:
1.46 matthew 1166: sub insert_title { return "\n <title></title>\n"; }
1167: sub insert_xlabel { return "\n <xlabel></xlabel>\n"; }
1168: sub insert_ylabel { return "\n <ylabel></ylabel>\n"; }
1.20 matthew 1169:
1170: sub insert_label {
1171: my $result;
1.46 matthew 1172: $result .= "\n <label ";
1.30 matthew 1173: foreach my $attr (keys(%label_defaults)) {
1.27 matthew 1174: $result .= ' '.$attr.'="'.
1.20 matthew 1175: $label_defaults{$attr}->{'default'}."\"\n";
1176: }
1177: $result .= " ></label>\n";
1178: return $result;
1179: }
1180:
1181: sub insert_curve {
1182: my $result;
1.41 matthew 1183: $result .= "\n <curve ";
1.30 matthew 1184: foreach my $attr (keys(%curve_defaults)) {
1.27 matthew 1185: $result .= ' '.$attr.'="'.
1.20 matthew 1186: $curve_defaults{$attr}->{'default'}."\"\n";
1187: }
1.41 matthew 1188: $result .= " >\n";
1189: $result .= &insert_data().&insert_data()."</curve>\n";
1.20 matthew 1190: }
1.4 matthew 1191:
1.20 matthew 1192: sub insert_function {
1193: my $result;
1194: $result .= "<function></function>\n";
1195: return $result;
1196: }
1.4 matthew 1197:
1.20 matthew 1198: sub insert_data {
1199: my $result;
1200: $result .= " <data></data>\n";
1201: return $result;
1202: }
1.4 matthew 1203:
1.48 matthew 1204: ##----------------------------------------------------------------------
1205: # Javascript functions to display help for tags
1206:
1207: sub make_javascript {
1208: my $helpwindowwidth = 400;
1209: my $helpwindowheight = 400;
1210: my $result = '';
1211: $result.=<<"ENDFUNCTION";
1212: <script language="JavaScript">
1213: function openWin(text)
1214: {
1215: newWin = open("", "new_W", "width=$helpwindowwidth,height=$helpwindowheight,resizable=1,scrollbars=1");
1216: newWin.document.open("text/html", "replace");
1217: newWin.document.writeln(text);
1218: newWin.document.writeln('<center><a href=\"javascript:window.close()\">close this window</a></center>');
1219: newWin.document.close();
1220: }
1221: </script>
1222: ENDFUNCTION
1223: return $result;
1224: }
1225:
1226: sub help_win {
1227: my ($helptext)=@_;
1228: $helptext =~ s/\n/ /g;
1229: $helptext =~ s/\'/\\\'/g;
1230: my $result = '';
1231: $result.=<<"ENDWIN";
1232: <table width="100%"><tr><td align="right">
1233: <a href="javascript:openWin('$helptext')">help</a>
1234: </td></tr></table><hr />
1235: ENDWIN
1236: return $result;
1237: }
1.21 matthew 1238: ##----------------------------------------------------------------------
1.20 matthew 1239: 1;
1240: __END__
1.4 matthew 1241:
1242:
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