Annotation of loncom/xml/lonplot.pm, revision 1.51
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.51 ! matthew 4: # $Id: lonplot.pm,v 1.50 2002/02/27 16:54:58 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
1.49 matthew 32: # 01/21 02/05 02/06 Matthew
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";
1.16 matthew 456: <img src = "/cgi-bin/plot.gif?$filename"
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') {
! 463: $result = "$filename.eps";
! 464: }
1.20 matthew 465: } elsif ($target eq 'edit') {
1.21 matthew 466: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 467: }
1.1 matthew 468: return $result;
469: }
1.2 matthew 470:
1.45 matthew 471:
472: ##--------------------------------------------------------------- xtics
473: sub start_xtics {
474: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
475: my $result='';
1.51 ! matthew 476: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 477: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
478: $tagstack->[-1]);
479: } elsif ($target eq 'edit') {
480: $result .= &Apache::edit::tag_start($target,$token,'xtics');
481: $result .= &edit_attributes($target,$token,\%tic_defaults,
482: \@tic_edit_order);
483: } elsif ($target eq 'modified') {
484: my $constructtag=&Apache::edit::get_new_args
485: ($token,$parstack,$safeeval,keys(%tic_defaults));
486: if ($constructtag) {
487: $result = &Apache::edit::rebuild_tag($token);
488: }
489: }
490: return $result;
491: }
492:
493: sub end_xtics {
494: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
495: my $result = '';
1.51 ! matthew 496: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 497: } elsif ($target eq 'edit') {
498: $result.=&Apache::edit::tag_end($target,$token);
499: }
500: return $result;
501: }
502:
503: ##--------------------------------------------------------------- ytics
504: sub start_ytics {
505: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
506: my $result='';
1.51 ! matthew 507: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 508: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
509: $tagstack->[-1]);
510: } elsif ($target eq 'edit') {
511: $result .= &Apache::edit::tag_start($target,$token,'ytics');
512: $result .= &edit_attributes($target,$token,\%tic_defaults,
513: \@tic_edit_order);
514: } elsif ($target eq 'modified') {
515: my $constructtag=&Apache::edit::get_new_args
516: ($token,$parstack,$safeeval,keys(%tic_defaults));
517: if ($constructtag) {
518: $result = &Apache::edit::rebuild_tag($token);
519: }
520: }
521: return $result;
522: }
523:
524: sub end_ytics {
525: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
526: my $result = '';
1.51 ! matthew 527: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 528: } elsif ($target eq 'edit') {
529: $result.=&Apache::edit::tag_end($target,$token);
530: }
531: return $result;
532: }
533:
534:
1.1 matthew 535: ##----------------------------------------------------------------- key
536: sub start_key {
537: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
538: my $result='';
1.51 ! matthew 539: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 540: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 541: $tagstack->[-1]);
1.20 matthew 542: } elsif ($target eq 'edit') {
1.25 matthew 543: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 544: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 545: } elsif ($target eq 'modified') {
546: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 547: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 548: if ($constructtag) {
549: $result = &Apache::edit::rebuild_tag($token);
550: }
1.4 matthew 551: }
1.1 matthew 552: return $result;
553: }
554:
555: sub end_key {
556: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
557: my $result = '';
1.51 ! matthew 558: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 559: } elsif ($target eq 'edit') {
1.21 matthew 560: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 561: }
1.1 matthew 562: return $result;
563: }
1.21 matthew 564:
1.1 matthew 565: ##------------------------------------------------------------------- title
566: sub start_title {
567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
568: my $result='';
1.51 ! matthew 569: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 570: $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.49 matthew 571: $title =~ s/\n/ /g;
1.32 matthew 572: if (length($title) > $max_str_len) {
573: $title = substr($title,0,$max_str_len);
574: }
1.20 matthew 575: } elsif ($target eq 'edit') {
1.25 matthew 576: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.22 matthew 577: my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.39 matthew 578: $result.=&Apache::edit::end_row().
579: &Apache::edit::start_spanning_row().
1.30 matthew 580: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 581: } elsif ($target eq 'modified') {
1.29 matthew 582: my $text=$$parser[-1]->get_text("/title");
1.42 matthew 583: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 584: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 585: }
1.1 matthew 586: return $result;
587: }
588:
589: sub end_title {
590: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
591: my $result = '';
1.51 ! matthew 592: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 593: } elsif ($target eq 'edit') {
1.27 matthew 594: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 595: }
1.1 matthew 596: return $result;
597: }
598: ##------------------------------------------------------------------- xlabel
599: sub start_xlabel {
600: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
601: my $result='';
1.51 ! matthew 602: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 603: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.49 matthew 604: $xlabel =~ s/\n/ /g;
1.32 matthew 605: if (length($xlabel) > $max_str_len) {
606: $xlabel = substr($xlabel,0,$max_str_len);
607: }
1.20 matthew 608: } elsif ($target eq 'edit') {
1.25 matthew 609: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.22 matthew 610: my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.39 matthew 611: $result.=&Apache::edit::end_row().
612: &Apache::edit::start_spanning_row().
1.30 matthew 613: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 614: } elsif ($target eq 'modified') {
1.29 matthew 615: my $text=$$parser[-1]->get_text("/xlabel");
1.42 matthew 616: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 617: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 618: }
1.1 matthew 619: return $result;
620: }
621:
622: sub end_xlabel {
623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
624: my $result = '';
1.51 ! matthew 625: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 626: } elsif ($target eq 'edit') {
1.27 matthew 627: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 628: }
1.1 matthew 629: return $result;
630: }
1.21 matthew 631:
1.1 matthew 632: ##------------------------------------------------------------------- ylabel
633: sub start_ylabel {
634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
635: my $result='';
1.51 ! matthew 636: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 637: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.49 matthew 638: $ylabel =~ s/\n/ /g;
1.32 matthew 639: if (length($ylabel) > $max_str_len) {
640: $ylabel = substr($ylabel,0,$max_str_len);
641: }
1.20 matthew 642: } elsif ($target eq 'edit') {
1.25 matthew 643: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.22 matthew 644: my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.39 matthew 645: $result .= &Apache::edit::end_row().
646: &Apache::edit::start_spanning_row().
1.30 matthew 647: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 648: } elsif ($target eq 'modified') {
1.29 matthew 649: my $text=$$parser[-1]->get_text("/ylabel");
1.42 matthew 650: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 651: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 652: }
1.1 matthew 653: return $result;
654: }
655:
656: sub end_ylabel {
657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
658: my $result = '';
1.51 ! matthew 659: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 660: } elsif ($target eq 'edit') {
1.27 matthew 661: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 662: }
1.1 matthew 663: return $result;
664: }
1.21 matthew 665:
1.1 matthew 666: ##------------------------------------------------------------------- label
667: sub start_label {
668: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
669: my $result='';
1.51 ! matthew 670: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 671: my %label;
672: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 673: $tagstack->[-1]);
1.32 matthew 674: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.49 matthew 675: $text =~ s/\n/ /g;
1.32 matthew 676: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
677: $label{'text'} = $text;
1.17 matthew 678: push(@labels,\%label);
1.20 matthew 679: } elsif ($target eq 'edit') {
1.25 matthew 680: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 681: $result .= &edit_attributes($target,$token,\%label_defaults);
1.22 matthew 682: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.39 matthew 683: $result .= &Apache::edit::end_row().
684: &Apache::edit::start_spanning_row().
1.30 matthew 685: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 686: } elsif ($target eq 'modified') {
1.42 matthew 687: &Apache::edit::get_new_args
1.24 matthew 688: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 689: $result.=&Apache::edit::rebuild_tag($token);
1.22 matthew 690: my $text=$$parser[-1]->get_text("/label");
1.21 matthew 691: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 692: }
1.1 matthew 693: return $result;
694: }
695:
696: sub end_label {
697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
698: my $result = '';
1.51 ! matthew 699: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 700: } elsif ($target eq 'edit') {
1.21 matthew 701: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 702: }
1.1 matthew 703: return $result;
704: }
705:
706: ##------------------------------------------------------------------- curve
707: sub start_curve {
708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
709: my $result='';
1.25 matthew 710: &Apache::lonxml::register('Apache::lonplot',('function','data'));
711: push (@Apache::lonxml::namespace,'curve');
1.51 ! matthew 712: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 713: my %curve;
714: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 715: $tagstack->[-1]);
1.17 matthew 716: push (@curves,\%curve);
1.20 matthew 717: } elsif ($target eq 'edit') {
1.26 matthew 718: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.48 matthew 719: $result .= &help_win($curve_help_text);
1.21 matthew 720: $result .= &edit_attributes($target,$token,\%curve_defaults);
1.20 matthew 721: } elsif ($target eq 'modified') {
722: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 723: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 724: if ($constructtag) {
725: $result = &Apache::edit::rebuild_tag($token);
726: $result.= &Apache::edit::handle_insert();
727: }
1.4 matthew 728: }
1.1 matthew 729: return $result;
730: }
731:
732: sub end_curve {
733: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
734: my $result = '';
1.25 matthew 735: pop @Apache::lonxml::namespace;
736: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 ! matthew 737: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 738: } elsif ($target eq 'edit') {
1.21 matthew 739: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 740: }
1.1 matthew 741: return $result;
742: }
1.21 matthew 743:
1.1 matthew 744: ##------------------------------------------------------------ curve function
745: sub start_function {
746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
747: my $result='';
1.51 ! matthew 748: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 749: if (exists($curves[-1]->{'data'})) {
750: &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
751: delete $curves[-1]->{'data'} ;
752: }
753: $curves[-1]->{'function'} =
754: &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.20 matthew 755: } elsif ($target eq 'edit') {
1.37 matthew 756: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.22 matthew 757: my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.39 matthew 758: $result .= &Apache::edit::end_row().
759: &Apache::edit::start_spanning_row().
1.30 matthew 760: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 761: } elsif ($target eq 'modified') {
1.42 matthew 762: $result.=&Apache::edit::rebuild_tag($token);
1.20 matthew 763: my $text=$$parser[-1]->get_text("/function");
764: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 765: }
1.1 matthew 766: return $result;
767: }
768:
769: sub end_function {
770: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
771: my $result = '';
1.51 ! matthew 772: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 773: } elsif ($target eq 'edit') {
1.26 matthew 774: $result .= &Apache::edit::end_table();
1.4 matthew 775: }
1.1 matthew 776: return $result;
777: }
1.21 matthew 778:
1.1 matthew 779: ##------------------------------------------------------------ curve data
780: sub start_data {
781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
782: my $result='';
1.51 ! matthew 783: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 784: if (exists($curves[-1]->{'function'})) {
785: &Apache::lonxml::warning('Use of <data> precludes use of .'.
786: '<function>. The <function> will be omitted in favor of '.
787: 'the <data> declaration.');
788: delete($curves[-1]->{'function'});
789: }
790: my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.40 matthew 791: # Deal with cases where we're given an array...
792: if ($datatext =~ /^\@/) {
793: $datatext = &Apache::run::run('return "'.$datatext.'"',
794: $safeeval,1);
795: }
1.49 matthew 796: $datatext =~ s/\s+/ /g;
1.17 matthew 797: # Need to do some error checking on the @data array -
798: # make sure it's all numbers and make sure each array
799: # is of the same length.
800: my @data;
1.35 matthew 801: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 802: @data = split /,/,$datatext;
803: } else { # Assume it's space seperated.
804: @data = split / /,$datatext;
805: }
806: for (my $i=0;$i<=$#data;$i++) {
807: # Check that it's non-empty
1.19 matthew 808: if (! defined($data[$i])) {
809: &Apache::lonxml::warning(
810: 'undefined <data> value. Replacing with '.
811: ' pi/e = 1.15572734979092');
812: $data[$i] = 1.15572734979092;
813: }
1.17 matthew 814: # Check that it's a number
1.19 matthew 815: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
816: &Apache::lonxml::warning(
817: 'Bad <data> value of '.$data[$i].' Replacing with '.
818: ' pi/e = 1.15572734979092');
819: $data[$i] = 1.15572734979092;
820: }
1.17 matthew 821: }
1.35 matthew 822: # complain if the number of data points is not the same as
823: # in previous sets of data.
1.36 matthew 824: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 825: &Apache::lonxml::warning
826: ('Number of data points is not consistent with previous '.
827: 'number of data points');
828: }
1.17 matthew 829: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 830: } elsif ($target eq 'edit') {
1.37 matthew 831: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.22 matthew 832: my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.39 matthew 833: $result .= &Apache::edit::end_row().
834: &Apache::edit::start_spanning_row().
1.30 matthew 835: &Apache::edit::editfield('',$text,'',60,1);
1.20 matthew 836: } elsif ($target eq 'modified') {
1.42 matthew 837: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 838: my $text=$$parser[-1]->get_text("/data");
839: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 840: }
1.1 matthew 841: return $result;
842: }
843:
844: sub end_data {
845: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
846: my $result = '';
1.51 ! matthew 847: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 848: } elsif ($target eq 'edit') {
1.26 matthew 849: $result .= &Apache::edit::end_table();
1.4 matthew 850: }
1.1 matthew 851: return $result;
852: }
853:
854: ##------------------------------------------------------------------- axis
855: sub start_axis {
856: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
857: my $result='';
1.51 ! matthew 858: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 859: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
860: $tagstack->[-1]);
1.20 matthew 861: } elsif ($target eq 'edit') {
1.25 matthew 862: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.21 matthew 863: $result .= &edit_attributes($target,$token,\%axis_defaults);
1.20 matthew 864: } elsif ($target eq 'modified') {
1.29 matthew 865: my $constructtag=&Apache::edit::get_new_args
866: ($token,$parstack,$safeeval,keys(%axis_defaults));
867: if ($constructtag) {
868: $result = &Apache::edit::rebuild_tag($token);
869: }
1.4 matthew 870: }
1.1 matthew 871: return $result;
872: }
873:
874: sub end_axis {
875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
876: my $result = '';
1.51 ! matthew 877: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 878: } elsif ($target eq 'edit') {
1.21 matthew 879: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 880: } elsif ($target eq 'modified') {
1.4 matthew 881: }
1.1 matthew 882: return $result;
883: }
884:
1.21 matthew 885: ###################################################################
886: ## ##
887: ## Utility Functions ##
888: ## ##
889: ###################################################################
890:
1.13 matthew 891: ##----------------------------------------------------------- set_defaults
892: sub set_defaults {
1.21 matthew 893: my ($var,$defaults) = @_;
1.13 matthew 894: my $key;
1.24 matthew 895: foreach $key (keys(%$defaults)) {
1.13 matthew 896: $var->{$key} = $defaults->{$key}->{'default'};
897: }
898: }
899:
1.1 matthew 900: ##------------------------------------------------------------------- misc
1.2 matthew 901: sub get_attributes{
1.21 matthew 902: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 903: foreach my $attr (keys(%{$defaults})) {
1.10 matthew 904: $values->{$attr} =
1.15 matthew 905: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1.10 matthew 906: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 907: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 908: next;
909: }
1.10 matthew 910: my $test = $defaults->{$attr}->{'test'};
911: if (! &$test($values->{$attr})) {
1.6 matthew 912: &Apache::lonxml::warning
913: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 914: .$defaults->{$attr}->{'default'} );
915: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 916: }
1.2 matthew 917: }
1.11 matthew 918: return ;
1.6 matthew 919: }
1.40 matthew 920:
1.15 matthew 921: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 922: sub write_gnuplot_file {
1.51 ! matthew 923: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 924: my $gnuplot_input = '';
1.10 matthew 925: my $curve;
1.6 matthew 926: # Collect all the colors
927: my @Colors;
928: push @Colors, $plot{'bgcolor'};
929: push @Colors, $plot{'fgcolor'};
1.13 matthew 930: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 931: foreach $curve (@curves) {
932: push @Colors, ($curve->{'color'} ne '' ?
933: $curve->{'color'} :
1.13 matthew 934: $plot{'fgcolor'} );
1.6 matthew 935: }
936: # set term
1.51 ! matthew 937: if ($target eq 'web') {
! 938: $gnuplot_input .= 'set term gif ';
! 939: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
! 940: $gnuplot_input .= $plot{'font'} . ' ';
! 941: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
! 942: $gnuplot_input .= "@Colors\n";
! 943: # set output
! 944: $gnuplot_input .= "set output\n";
! 945: } elsif ($target eq 'tex') {
! 946: $gnuplot_input .= "set term postscript eps monochrome\n";
! 947: $gnuplot_input .= "set output \"$filename.eps\"\n";
! 948: }
1.7 matthew 949: # grid
1.10 matthew 950: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 951: # border
1.9 matthew 952: $gnuplot_input .= ($plot{'border'} eq 'on'?
953: 'set border'.$/ :
954: 'set noborder'.$/ ); # title, xlabel, ylabel
1.45 matthew 955: # titles
1.13 matthew 956: $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
957: $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
958: $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
1.45 matthew 959: # tics
960: if (%xtics) {
961: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 962: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 963: $gnuplot_input .= "$xtics{'start'}, ";
964: $gnuplot_input .= "$xtics{'increment'}, ";
965: $gnuplot_input .= "$xtics{'end'}\n";
966: }
967: if (%ytics) {
968: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 969: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 970: $gnuplot_input .= "$ytics{'start'}, ";
971: $gnuplot_input .= "$ytics{'increment'}, ";
972: $gnuplot_input .= "$ytics{'end'}\n";
973: }
974: # axis
1.23 matthew 975: if (%axis) {
1.13 matthew 976: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
977: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 978: }
979: # Key
1.23 matthew 980: if (%key) {
1.9 matthew 981: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
982: if ($key{'title'} ne '') {
1.43 matthew 983: $gnuplot_input .= 'title " '.$key{'title'}.'" ';
1.11 matthew 984: }
985: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 986: } else {
1.9 matthew 987: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 988: }
1.6 matthew 989: # labels
1.10 matthew 990: my $label;
1.6 matthew 991: foreach $label (@labels) {
992: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.9 matthew 993: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
1.6 matthew 994: }
995: # curves
996: $gnuplot_input .= 'plot ';
1.9 matthew 997: for (my $i = 0;$i<=$#curves;$i++) {
998: $curve = $curves[$i];
999: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1000: if (exists($curve->{'function'})) {
1.9 matthew 1001: $gnuplot_input.=
1002: $curve->{'function'}.' title "'.
1003: $curve->{'name'}.'" with '.
1004: $curve->{'linestyle'};
1.6 matthew 1005: } elsif (exists($curve->{'data'})) {
1.40 matthew 1006: # Store data values in $datatext
1007: my $datatext = '';
1008: # get new filename
1009: my $datafilename = "$tmpdir/$filename.$i";
1010: my $fh=Apache::File->new(">$datafilename");
1011: # Compile data
1.6 matthew 1012: my @Data = @{$curve->{'data'}};
1.9 matthew 1013: my @Data0 = @{$Data[0]};
1014: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1015: my $dataset;
1.6 matthew 1016: foreach $dataset (@Data) {
1.9 matthew 1017: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1018: }
1.9 matthew 1019: $datatext .= $/;
1.6 matthew 1020: }
1.40 matthew 1021: # write file
1022: print $fh $datatext;
1023: close ($fh);
1024: # generate gnuplot text
1025: $gnuplot_input.= '"'.$datafilename.'" title "'.
1026: $curve->{'name'}.'" with '.
1027: $curve->{'linestyle'};
1.6 matthew 1028: }
1029: }
1.40 matthew 1030: # Write the output to a file.
1031: my $fh=Apache::File->new(">$tmpdir$filename");
1032: print $fh $gnuplot_input;
1033: close($fh);
1034: # That's all folks.
1035: return ;
1.2 matthew 1036: }
1.21 matthew 1037:
1038: #---------------------------------------------- check_inputs
1039: sub check_inputs {
1040: ## Note: no inputs, no outputs - this acts only on global variables.
1041: ## Make sure we have all the input we need:
1.47 matthew 1042: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
1.23 matthew 1043: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1044: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1045: if (! defined($title )) {} # No title for this plot, thats okay
1046: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1047: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1048: if ($#labels < 0) { } # No labels for this plot, thats okay
1049: if ($#curves < 0) {
1050: &Apache::lonxml::warning("No curves specified for plot!!!!");
1051: return '';
1052: }
1053: my $curve;
1054: foreach $curve (@curves) {
1055: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1056: &Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n");
1057: return '';
1058: }
1059: }
1060: }
1061:
1.20 matthew 1062: #------------------------------------------------ make_edit
1063: sub edit_attributes {
1.34 matthew 1064: my ($target,$token,$defaults,$keys) = @_;
1065: my ($result,@keys);
1066: if ($keys && ref($keys) eq 'ARRAY') {
1067: @keys = @$keys;
1068: } else {
1069: @keys = sort(keys(%$defaults));
1070: }
1071: foreach my $attr (@keys) {
1.35 matthew 1072: # append a ' ' to the description if it doesn't have one already.
1073: my $description = $defaults->{$attr}->{'description'};
1074: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1075: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1076: $result .= &Apache::edit::text_arg
1.38 matthew 1077: ($description,$attr,$token,
1078: $defaults->{$attr}->{'size'});
1.20 matthew 1079: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.35 matthew 1080: $result .= &Apache::edit::select_arg
1081: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1082: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.35 matthew 1083: $result .= &Apache::edit::select_arg
1084: ($description,$attr,['on','off'],$token);
1.20 matthew 1085: }
1.25 matthew 1086: $result .= '<br />';
1.20 matthew 1087: }
1088: return $result;
1089: }
1.1 matthew 1090:
1.21 matthew 1091:
1092: ###################################################################
1093: ## ##
1094: ## Insertion functions for editing plots ##
1095: ## ##
1096: ###################################################################
1097:
1.47 matthew 1098: sub insert_gnuplot {
1.29 matthew 1099: my $result = '';
1.20 matthew 1100: # plot attributes
1.50 matthew 1101: $result .= "<gnuplot \n";
1.47 matthew 1102: foreach my $attr (keys(%gnuplot_defaults)) {
1103: $result .= " $attr=\"$gnuplot_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1104: }
1105: $result .= ">\n";
1.47 matthew 1106: # Add the components (most are commented out for simplicity)
1.44 matthew 1107: # $result .= &insert_key();
1108: # $result .= &insert_axis();
1109: # $result .= &insert_title();
1110: # $result .= &insert_xlabel();
1111: # $result .= &insert_ylabel();
1.20 matthew 1112: $result .= &insert_curve();
1.50 matthew 1113: # close up the <gnuplot>
1114: $result .= "</gnuplot>\n";
1.45 matthew 1115: return $result;
1116: }
1117:
1.46 matthew 1118: sub insert_tics {
1119: my $result;
1120: $result .= &insert_xtics() . &insert_ytics;
1121: return $result;
1122: }
1123:
1.45 matthew 1124: sub insert_xtics {
1125: my $result;
1.46 matthew 1126: $result .= "\n <xtics ";
1.45 matthew 1127: foreach my $attr (keys(%tic_defaults)) {
1.46 matthew 1128: $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1129: }
1.46 matthew 1130: $result .= "/>\n";
1.45 matthew 1131: return $result;
1132: }
1133:
1134: sub insert_ytics {
1135: my $result;
1.46 matthew 1136: $result .= "\n <ytics ";
1.45 matthew 1137: foreach my $attr (keys(%tic_defaults)) {
1.46 matthew 1138: $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1139: }
1.46 matthew 1140: $result .= "/>\n";
1.20 matthew 1141: return $result;
1142: }
1143:
1144: sub insert_key {
1145: my $result;
1.46 matthew 1146: $result .= "\n <key \n";
1.30 matthew 1147: foreach my $attr (keys(%key_defaults)) {
1.29 matthew 1148: $result .= " $attr=\"$key_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1149: }
1150: $result .= " />\n";
1151: return $result;
1152: }
1153:
1154: sub insert_axis{
1155: my $result;
1.46 matthew 1156: $result .= "\n <axis ";
1.30 matthew 1157: foreach my $attr (keys(%axis_defaults)) {
1.29 matthew 1158: $result .= " $attr=\"$axis_defaults{$attr}->{'default'}\"\n";
1.20 matthew 1159: }
1160: $result .= " />\n";
1161: return $result;
1162: }
1.28 matthew 1163:
1.46 matthew 1164: sub insert_title { return "\n <title></title>\n"; }
1165: sub insert_xlabel { return "\n <xlabel></xlabel>\n"; }
1166: sub insert_ylabel { return "\n <ylabel></ylabel>\n"; }
1.20 matthew 1167:
1168: sub insert_label {
1169: my $result;
1.46 matthew 1170: $result .= "\n <label ";
1.30 matthew 1171: foreach my $attr (keys(%label_defaults)) {
1.27 matthew 1172: $result .= ' '.$attr.'="'.
1.20 matthew 1173: $label_defaults{$attr}->{'default'}."\"\n";
1174: }
1175: $result .= " ></label>\n";
1176: return $result;
1177: }
1178:
1179: sub insert_curve {
1180: my $result;
1.41 matthew 1181: $result .= "\n <curve ";
1.30 matthew 1182: foreach my $attr (keys(%curve_defaults)) {
1.27 matthew 1183: $result .= ' '.$attr.'="'.
1.20 matthew 1184: $curve_defaults{$attr}->{'default'}."\"\n";
1185: }
1.41 matthew 1186: $result .= " >\n";
1187: $result .= &insert_data().&insert_data()."</curve>\n";
1.20 matthew 1188: }
1.4 matthew 1189:
1.20 matthew 1190: sub insert_function {
1191: my $result;
1192: $result .= "<function></function>\n";
1193: return $result;
1194: }
1.4 matthew 1195:
1.20 matthew 1196: sub insert_data {
1197: my $result;
1198: $result .= " <data></data>\n";
1199: return $result;
1200: }
1.4 matthew 1201:
1.48 matthew 1202: ##----------------------------------------------------------------------
1203: # Javascript functions to display help for tags
1204:
1205: sub make_javascript {
1206: my $helpwindowwidth = 400;
1207: my $helpwindowheight = 400;
1208: my $result = '';
1209: $result.=<<"ENDFUNCTION";
1210: <script language="JavaScript">
1211: function openWin(text)
1212: {
1213: newWin = open("", "new_W", "width=$helpwindowwidth,height=$helpwindowheight,resizable=1,scrollbars=1");
1214: newWin.document.open("text/html", "replace");
1215: newWin.document.writeln(text);
1216: newWin.document.writeln('<center><a href=\"javascript:window.close()\">close this window</a></center>');
1217: newWin.document.close();
1218: }
1219: </script>
1220: ENDFUNCTION
1221: return $result;
1222: }
1223:
1224: sub help_win {
1225: my ($helptext)=@_;
1226: $helptext =~ s/\n/ /g;
1227: $helptext =~ s/\'/\\\'/g;
1228: my $result = '';
1229: $result.=<<"ENDWIN";
1230: <table width="100%"><tr><td align="right">
1231: <a href="javascript:openWin('$helptext')">help</a>
1232: </td></tr></table><hr />
1233: ENDWIN
1234: return $result;
1235: }
1.21 matthew 1236: ##----------------------------------------------------------------------
1.20 matthew 1237: 1;
1238: __END__
1.4 matthew 1239:
1240:
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