Annotation of loncom/xml/lonplot.pm, revision 1.20
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.20 ! matthew 4: # $Id: lonplot.pm,v 1.19 2001/12/27 19:47:02 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
1.20 ! matthew 29: # 12/17 12/18 12/19 12/20 12/21 12/27 Matthew
1.1 matthew 30: package Apache::lonplot;
1.10 matthew 31:
1.1 matthew 32: use strict;
1.10 matthew 33: use Apache::File;
1.1 matthew 34: use Apache::response;
1.2 matthew 35: use Apache::lonxml;
1.20 ! matthew 36: use Apache::edit;
1.10 matthew 37:
1.1 matthew 38: sub BEGIN {
39: &Apache::lonxml::register('Apache::lonplot',('plot'));
40: }
41:
1.10 matthew 42: ##
43: ## Description of data structures:
44: ##
45: ## %plot %key %axis
46: ## --------------------------
47: ## height title color
48: ## width box xmin
49: ## bgcolor pos xmax
50: ## fgcolor ymin
51: ## transparent ymax
52: ## grid
53: ## border
54: ## font
1.19 matthew 55: ## align
1.10 matthew 56: ##
57: ## @labels: $labels[$i] = \%label
58: ## %label: text, xpos, ypos, justify
1.14 matthew 59: ##
1.10 matthew 60: ## @curves: $curves[$i] = \%curve
1.14 matthew 61: ## %curve: name, linestyle, ( function | data )
1.10 matthew 62: ##
63: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
64: ## [y1,y2,y3,y4] ]
65: ##
66: ##------------------------------------------------------------
1.1 matthew 67: ##
68: ## Tests used in checking the validitity of input
69: ##
1.11 matthew 70: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 71: my $real_test =
72: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.11 matthew 73: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
1.1 matthew 74: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 75: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 76: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
77: my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/};
1.15 matthew 78: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/};
1.1 matthew 79: ##
1.20 ! matthew 80: ## Attribute metadata
1.1 matthew 81: ##
82: my %plot_defaults =
83: (
1.20 ! matthew 84: height => {
! 85: default => 200,
! 86: test => $int_test,
! 87: description => 'vertical size of image (pixels)',
! 88: edit_type => 'entry'
! 89: },
! 90: width => {
! 91: default => 200,
! 92: test => $int_test,
! 93: description => 'horizontal size of image (pixels)',
! 94: edit_type => 'entry'
! 95: },
! 96: bgcolor => {
! 97: default => 'xffffff',
! 98: test => $color_test,
! 99: description => 'background color of image (xffffff)',
! 100: edit_type => 'entry'
! 101: },
! 102: fgcolor => {
! 103: default => 'x000000',
! 104: test => $color_test,
! 105: description => 'foreground color of image (x000000)',
! 106: edit_type => 'entry'
! 107: },
! 108: transparent => {
! 109: default => 'off',
! 110: test => $onoff_test,
! 111: description => '',
! 112: edit_type => 'on_off'
! 113: },
! 114: grid => {
! 115: default => 'off',
! 116: test => $onoff_test,
! 117: description => '',
! 118: edit_type => 'on_off'
! 119: },
! 120: border => {
! 121: default => 'on',
! 122: test => $onoff_test,
! 123: description => '',
! 124: edit_type => 'on_off'
! 125: },
! 126: font => {
! 127: default => 'medium',
! 128: test => $sml_test,
! 129: description => 'Size of font to use',
! 130: edit_type => 'choice',
! 131: choices => ['small','medium','large']
! 132: },
! 133: align => {
! 134: default => 'left',
! 135: test => sub {$_[0]=~/^(left|right|center)$/},
! 136: description => 'alignment for image in html',
! 137: edit_type => 'choice',
! 138: choices => ['left','right','center']
! 139: }
1.1 matthew 140: );
141:
142: my %key_defaults =
143: (
1.20 ! matthew 144: title => {
! 145: default => '',
! 146: test => $words_test,
! 147: description => 'Title of key',
! 148: edit_type => 'entry'
! 149: },
! 150: box => {
! 151: default => 'off',
! 152: test => $onoff_test,
! 153: description => 'Draw a box around the key?',
! 154: edit_type => 'on_off'
! 155: },
! 156: pos => {
! 157: default => 'top right',
! 158: test => $key_pos_test,
! 159: description => 'position of the key on the plot',
! 160: edit_type => 'choice',
! 161: choices => ['top left','top right','bottom left','bottom right',
! 162: 'outside','below']
! 163: }
1.1 matthew 164: );
165:
166: my %label_defaults =
167: (
1.20 ! matthew 168: xpos => {
! 169: default => 0,
! 170: test => $real_test,
! 171: description => 'x position of label (graph coordinates)',
! 172: edit_type => 'entry'
! 173: },
! 174: ypos => {
! 175: default => 0,
! 176: test => $real_test,
! 177: description => 'y position of label (graph coordinates)',
! 178: edit_type => 'entry'
! 179: },
! 180: justify => {
! 181: default => 'left',
! 182: test => sub {$_[0]=~/^(left|right|center)$/},
! 183: description => 'justification of the label text on the plot',
! 184: edit_type => 'choice',
! 185: choices => ['left','right','center']
! 186: }
1.1 matthew 187: );
188:
189: my %axis_defaults =
190: (
1.20 ! matthew 191: color => {
! 192: default => 'x000000',
! 193: test => $color_test,
! 194: description => 'color of axes (x000000)',
! 195: edit_type => 'entry'
! 196: },
! 197: xmin => {
! 198: default => '-10.0',
! 199: test => $real_test,
! 200: description => 'minimum x-value shown in plot',
! 201: edit_type => 'entry'
! 202: },
! 203: xmax => {
! 204: default => ' 10.0',
! 205: test => $real_test,
! 206: description => 'maximum x-value shown in plot',
! 207: edit_type => 'entry'
! 208: },
! 209: ymin => {
! 210: default => '-10.0',
! 211: test => $real_test,
! 212: description => 'minimum y-value shown in plot',
! 213: edit_type => 'entry'
! 214: },
! 215: ymax => {
! 216: default => ' 10.0',
! 217: test => $real_test,
! 218: description => 'maximum y-value shown in plot',
! 219: edit_type => 'entry'
! 220: },
! 221: linestyle => {
! 222: default => 'points',
! 223: test => $linestyle_test,
! 224: description => 'Style of the axis lines',
! 225: edit_type => 'choice',
! 226: choices => ['lines','linespoints','dots','points']
! 227: }
1.1 matthew 228: );
229:
230: my %curve_defaults =
231: (
1.20 ! matthew 232: color => {
! 233: default => 'x000000',
! 234: test => $color_test,
! 235: description => 'color of curve (x000000)',
! 236: edit_type => 'entry'
! 237: },
! 238: name => {
! 239: default => '',
! 240: test => $words_test,
! 241: description => 'name of curve to appear in key',
! 242: edit_type => 'entry'
! 243: },
! 244: linestyle => {
! 245: default => 'lines',
! 246: test => $linestyle_test,
! 247: description => 'Style of the axis lines',
! 248: edit_type => 'choice',
! 249: choices => ['lines','linespoints','dots','points','steps']
! 250: }
1.1 matthew 251: );
252:
253: ##
254: ## End of defaults
255: ##
256: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves);
257:
258: sub start_plot {
1.10 matthew 259: %plot = undef; %key = undef; %axis = undef;
260: $title = undef; $xlabel = undef; $ylabel = undef;
261: $#labels = -1; $#curves = -1;
1.6 matthew 262: #
1.1 matthew 263: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
264: my $result='';
1.4 matthew 265: if ($target eq 'web') {
1.17 matthew 266: &Apache::lonxml::register('Apache::lonplot',
267: ('title','xlabel','ylabel','key','axis','label','curve'));
268: push (@Apache::lonxml::namespace,'plot');
269: ## Always evaluate the insides of the <plot></plot> tags
270: my $inside = &Apache::lonxml::get_all_text("/plot",$$parser[-1]);
271: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
272: &Apache::lonxml::newparser($parser,\$inside);
273: ##-------------------------------------------------------
274: &get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval,
275: $tagstack->[-1]);
1.20 ! matthew 276: } elsif ($target eq 'edit') {
! 277: } elsif ($target eq 'modified') {
! 278: my $constructtag=&Apache::edit::get_new_args
! 279: ($token,$parstack,$safeeval,keys %plot_defaults);
! 280: if ($constructtag) {
! 281: $result = &Apache::edit::rebuild_tag($token);
! 282: $result.= &Apache::edit::handle_insert();
! 283: }
1.4 matthew 284: }
1.1 matthew 285: return '';
286: }
287:
288: sub end_plot {
289: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
290: pop @Apache::lonxml::namespace;
1.4 matthew 291: &Apache::lonxml::deregister('Apache::lonplot',
292: ('title','xlabel','ylabel','key','axis','label','curve'));
293: my $result = '';
294: if ($target eq 'web') {
1.13 matthew 295: ##
296: ## Make sure we have all the input we need:
297: if (! defined(%plot )) { &set_defaults(\%plot,\%plot_defaults); }
1.14 matthew 298: if (! defined(%key )) {} # No key for this plot
1.13 matthew 299: if (! defined(%axis )) { &set_defaults(\%axis,\%axis_defaults); }
1.14 matthew 300: if (! defined($title )) {} # No title for this plot
301: if (! defined($xlabel)) {} # No xlabel for this plot
302: if (! defined($ylabel)) {} # No ylabel for this plot
1.13 matthew 303: if ($#labels < 0) { } # No labels for this plot
1.14 matthew 304: if ($#curves < 0) {
305: &Apache::lonxml::warning("No curves specified for plot!!!!");
306: return '';
307: }
308: my $curve;
309: foreach $curve (@curves) {
310: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
311: &Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n");
312: return '';
313: }
314: }
1.13 matthew 315: ##
316: ## Determine filename
1.4 matthew 317: my $tmpdir = '/home/httpd/perl/tmp/';
1.12 matthew 318: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1.13 matthew 319: '_'.time.'_'.$$.'_plot.data';
1.4 matthew 320: ## Write the plot description to the file
1.12 matthew 321: my $fh=Apache::File->new(">$tmpdir$filename");
322: print $fh &write_gnuplot_file();
1.14 matthew 323: close($fh);
1.4 matthew 324: ## return image tag for the plot
1.12 matthew 325: $result .= <<"ENDIMAGE";
1.16 matthew 326: <img src = "/cgi-bin/plot.gif?$filename"
327: width = "$plot{'width'}"
328: height = "$plot{'height'}"
329: align = "$plot{'align'}"
330: alt = "/cgi-bin/plot.gif?$filename" />
1.12 matthew 331: ENDIMAGE
1.20 ! matthew 332: } elsif ($target eq 'edit') {
! 333: } elsif ($target eq 'modified') {
1.4 matthew 334: }
1.1 matthew 335: return $result;
336: }
1.2 matthew 337:
1.1 matthew 338: ##----------------------------------------------------------------- key
339: sub start_key {
340: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
341: my $result='';
1.17 matthew 342: if ($target eq 'web') {
343: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 344: $tagstack->[-1]);
1.20 ! matthew 345: } elsif ($target eq 'edit') {
! 346: } elsif ($target eq 'modified') {
! 347: my $constructtag=&Apache::edit::get_new_args
! 348: ($token,$parstack,$safeeval,keys %key_defaults);
! 349: if ($constructtag) {
! 350: $result = &Apache::edit::rebuild_tag($token);
! 351: $result.= &Apache::edit::handle_insert();
! 352: }
1.4 matthew 353: }
1.1 matthew 354: return $result;
355: }
356:
357: sub end_key {
358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
359: my $result = '';
1.4 matthew 360: if ($target eq 'web') {
1.20 ! matthew 361: } elsif ($target eq 'edit') {
! 362: } elsif ($target eq 'modified') {
1.4 matthew 363: }
1.1 matthew 364: return $result;
365: }
366: ##------------------------------------------------------------------- title
367: sub start_title {
368: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
369: my $result='';
1.4 matthew 370: if ($target eq 'web') {
1.17 matthew 371: $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.20 ! matthew 372: } elsif ($target eq 'edit') {
! 373: } elsif ($target eq 'modified') {
1.4 matthew 374: }
1.1 matthew 375: return $result;
376: }
377:
378: sub end_title {
379: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
380: my $result = '';
1.4 matthew 381: if ($target eq 'web') {
1.20 ! matthew 382: } elsif ($target eq 'edit') {
! 383: } elsif ($target eq 'modified') {
1.4 matthew 384: }
1.1 matthew 385: return $result;
386: }
387: ##------------------------------------------------------------------- xlabel
388: sub start_xlabel {
389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
390: my $result='';
1.4 matthew 391: if ($target eq 'web') {
1.17 matthew 392: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.20 ! matthew 393: } elsif ($target eq 'edit') {
! 394: } elsif ($target eq 'modified') {
1.4 matthew 395: }
1.1 matthew 396: return $result;
397: }
398:
399: sub end_xlabel {
400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
401: my $result = '';
1.4 matthew 402: if ($target eq 'web') {
1.20 ! matthew 403: } elsif ($target eq 'edit') {
! 404: } elsif ($target eq 'modified') {
1.4 matthew 405: }
1.1 matthew 406: return $result;
407: }
408: ##------------------------------------------------------------------- ylabel
409: sub start_ylabel {
410: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
411: my $result='';
1.4 matthew 412: if ($target eq 'web') {
1.17 matthew 413: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.20 ! matthew 414: } elsif ($target eq 'edit') {
! 415: } elsif ($target eq 'modified') {
1.4 matthew 416: }
1.1 matthew 417: return $result;
418: }
419:
420: sub end_ylabel {
421: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
422: my $result = '';
1.4 matthew 423: if ($target eq 'web') {
1.20 ! matthew 424: } elsif ($target eq 'edit') {
! 425: } elsif ($target eq 'modified') {
1.4 matthew 426: }
1.1 matthew 427: return $result;
428: }
429: ##------------------------------------------------------------------- label
430: sub start_label {
431: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
432: my $result='';
1.17 matthew 433: if ($target eq 'web') {
434: my %label;
435: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 436: $tagstack->[-1]);
1.17 matthew 437: $label{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
438: if (! &$words_test($label{'text'})) {
439: # I should probably warn about it, too.
440: $label{'text'} = 'Illegal text';
441: }
442: push(@labels,\%label);
1.20 ! matthew 443: } elsif ($target eq 'edit') {
! 444: } elsif ($target eq 'modified') {
! 445: my $constructtag=&Apache::edit::get_new_args
! 446: ($token,$parstack,$safeeval,keys %label_defaults);
! 447: if ($constructtag) {
! 448: $result = &Apache::edit::rebuild_tag($token);
! 449: $result.= &Apache::edit::handle_insert();
! 450: }
1.4 matthew 451: }
1.1 matthew 452: return $result;
453: }
454:
455: sub end_label {
456: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
457: my $result = '';
1.4 matthew 458: if ($target eq 'web') {
1.20 ! matthew 459: } elsif ($target eq 'edit') {
! 460: } elsif ($target eq 'modified') {
1.4 matthew 461: }
1.1 matthew 462: return $result;
463: }
464:
465: ##------------------------------------------------------------------- curve
466: sub start_curve {
467: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
468: my $result='';
1.17 matthew 469: if ($target eq 'web') {
470: my %curve;
471: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 472: $tagstack->[-1]);
1.17 matthew 473: push (@curves,\%curve);
474: &Apache::lonxml::register('Apache::lonplot',('function','data'));
475: push (@Apache::lonxml::namespace,'curve');
1.20 ! matthew 476: } elsif ($target eq 'edit') {
! 477: } elsif ($target eq 'modified') {
! 478: my $constructtag=&Apache::edit::get_new_args
! 479: ($token,$parstack,$safeeval,keys %label_defaults);
! 480: if ($constructtag) {
! 481: $result = &Apache::edit::rebuild_tag($token);
! 482: $result.= &Apache::edit::handle_insert();
! 483: }
1.4 matthew 484: }
1.1 matthew 485: return $result;
486: }
487:
488: sub end_curve {
489: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
490: my $result = '';
1.4 matthew 491: if ($target eq 'web') {
1.17 matthew 492: pop @Apache::lonxml::namespace;
493: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.20 ! matthew 494: } elsif ($target eq 'edit') {
! 495: } elsif ($target eq 'modified') {
1.4 matthew 496: }
1.1 matthew 497: return $result;
498: }
499: ##------------------------------------------------------------ curve function
500: sub start_function {
501: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
502: my $result='';
1.4 matthew 503: if ($target eq 'web') {
1.17 matthew 504: if (exists($curves[-1]->{'data'})) {
505: &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
506: delete $curves[-1]->{'data'} ;
507: }
508: $curves[-1]->{'function'} =
509: &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.20 ! matthew 510: } elsif ($target eq 'edit') {
! 511: $result.=&Apache::edit::tag_start($target,$token);
! 512: my $text=&Apache::lonxml::get_all_text("/function",$$parser[-1]);
! 513: $result.='</td></tr><tr><td colspan="3">'.
! 514: &Apache::edit::editfield('',$text,'',20,1).
! 515: &Apache::edit::end_table();
! 516: } elsif ($target eq 'modified') {
! 517: # Why do I do this?
! 518: my $text=$$parser[-1]->get_text("/function");
! 519: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 520: }
1.1 matthew 521: return $result;
522: }
523:
524: sub end_function {
525: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
526: my $result = '';
1.4 matthew 527: if ($target eq 'web') {
1.20 ! matthew 528: } elsif ($target eq 'edit') {
! 529: } elsif ($target eq 'modified') {
1.4 matthew 530: }
1.1 matthew 531: return $result;
532: }
533: ##------------------------------------------------------------ curve data
534: sub start_data {
535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
536: my $result='';
1.4 matthew 537: if ($target eq 'web') {
1.17 matthew 538: if (exists($curves[-1]->{'function'})) {
539: &Apache::lonxml::warning('Use of <data> precludes use of .'.
540: '<function>. The <function> will be omitted in favor of '.
541: 'the <data> declaration.');
542: delete($curves[-1]->{'function'});
543: }
544: my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
545: $datatext =~ s/\s+/ /g;
546: # Need to do some error checking on the @data array -
547: # make sure it's all numbers and make sure each array
548: # is of the same length.
549: my @data;
550: if ($datatext =~ /,/) {
551: @data = split /,/,$datatext;
552: } else { # Assume it's space seperated.
553: @data = split / /,$datatext;
554: }
555: for (my $i=0;$i<=$#data;$i++) {
556: # Check that it's non-empty
1.19 matthew 557: if (! defined($data[$i])) {
558: &Apache::lonxml::warning(
559: 'undefined <data> value. Replacing with '.
560: ' pi/e = 1.15572734979092');
561: $data[$i] = 1.15572734979092;
562: }
1.17 matthew 563: # Check that it's a number
1.19 matthew 564: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
565: &Apache::lonxml::warning(
566: 'Bad <data> value of '.$data[$i].' Replacing with '.
567: ' pi/e = 1.15572734979092');
568: $data[$i] = 1.15572734979092;
569: }
1.17 matthew 570: }
571: push @{$curves[-1]->{'data'}},\@data;
1.20 ! matthew 572: } elsif ($target eq 'edit') {
! 573: } elsif ($target eq 'modified') {
1.4 matthew 574: }
1.1 matthew 575: return $result;
576: }
577:
578: sub end_data {
579: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
580: my $result = '';
1.4 matthew 581: if ($target eq 'web') {
1.20 ! matthew 582: } elsif ($target eq 'edit') {
! 583: } elsif ($target eq 'modified') {
1.4 matthew 584: }
1.1 matthew 585: return $result;
586: }
587:
588: ##------------------------------------------------------------------- axis
589: sub start_axis {
590: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
591: my $result='';
1.4 matthew 592: if ($target eq 'web') {
1.17 matthew 593: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
594: $tagstack->[-1]);
1.20 ! matthew 595: } elsif ($target eq 'edit') {
! 596: } elsif ($target eq 'modified') {
1.4 matthew 597: }
1.1 matthew 598: return $result;
599: }
600:
601: sub end_axis {
602: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
603: my $result = '';
1.4 matthew 604: if ($target eq 'web') {
1.20 ! matthew 605: } elsif ($target eq 'edit') {
! 606: } elsif ($target eq 'modified') {
! 607: my $constructtag=&Apache::edit::get_new_args
! 608: ($token,$parstack,$safeeval,keys %axis_defaults);
! 609: if ($constructtag) {
! 610: $result = &Apache::edit::rebuild_tag($token);
! 611: $result.= &Apache::edit::handle_insert();
! 612: }
1.4 matthew 613: }
1.1 matthew 614: return $result;
615: }
616:
1.13 matthew 617: ##----------------------------------------------------------- set_defaults
618: sub set_defaults {
619: my $var = shift;
620: my $defaults = shift;
621: my $key;
622: foreach $key (keys %$defaults) {
623: $var->{$key} = $defaults->{$key}->{'default'};
624: }
625: }
626:
1.1 matthew 627: ##------------------------------------------------------------------- misc
1.2 matthew 628: sub get_attributes{
1.10 matthew 629: my $values = shift;
630: my $defaults = shift;
631: my $parstack = shift;
632: my $safeeval = shift;
633: my $tag = shift;
1.19 matthew 634: foreach my $attr (keys %{$defaults}) {
1.10 matthew 635: $values->{$attr} =
1.15 matthew 636: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1.10 matthew 637: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 638: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 639: next;
640: }
1.10 matthew 641: my $test = $defaults->{$attr}->{'test'};
642: if (! &$test($values->{$attr})) {
1.6 matthew 643: &Apache::lonxml::warning
644: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 645: .$defaults->{$attr}->{'default'} );
646: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 647: }
1.2 matthew 648: }
1.11 matthew 649: return ;
1.6 matthew 650: }
1.15 matthew 651: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 652: sub write_gnuplot_file {
653: my $gnuplot_input = '';
1.10 matthew 654: my $curve;
1.6 matthew 655: # Collect all the colors
656: my @Colors;
657: push @Colors, $plot{'bgcolor'};
658: push @Colors, $plot{'fgcolor'};
1.13 matthew 659: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 660: foreach $curve (@curves) {
661: push @Colors, ($curve->{'color'} ne '' ?
662: $curve->{'color'} :
1.13 matthew 663: $plot{'fgcolor'} );
1.6 matthew 664: }
665: # set term
666: $gnuplot_input .= 'set term gif ';
667: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
668: $gnuplot_input .= $plot{'font'} . ' ';
1.10 matthew 669: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
1.6 matthew 670: $gnuplot_input .= "@Colors\n";
1.7 matthew 671: # grid
1.10 matthew 672: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 673: # border
1.9 matthew 674: $gnuplot_input .= ($plot{'border'} eq 'on'?
675: 'set border'.$/ :
676: 'set noborder'.$/ ); # title, xlabel, ylabel
1.13 matthew 677: $gnuplot_input .= "set output\n";
678: $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
679: $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
680: $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
681: if (defined(%axis)) {
682: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
683: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 684: }
685: # Key
1.13 matthew 686: if (defined(%key)) {
1.9 matthew 687: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
688: if ($key{'title'} ne '') {
1.11 matthew 689: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
690: }
691: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 692: } else {
1.9 matthew 693: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 694: }
1.6 matthew 695: # labels
1.10 matthew 696: my $label;
1.6 matthew 697: foreach $label (@labels) {
698: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.9 matthew 699: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
1.6 matthew 700: }
701: # curves
702: $gnuplot_input .= 'plot ';
703: my $datatext = '';
1.9 matthew 704: for (my $i = 0;$i<=$#curves;$i++) {
705: $curve = $curves[$i];
706: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 707: if (exists($curve->{'function'})) {
1.9 matthew 708: $gnuplot_input.=
709: $curve->{'function'}.' title "'.
710: $curve->{'name'}.'" with '.
711: $curve->{'linestyle'};
1.6 matthew 712: } elsif (exists($curve->{'data'})) {
1.9 matthew 713: $gnuplot_input.= '\'-\' title "'.
714: $curve->{'name'}.'" with '.
715: $curve->{'linestyle'};
1.6 matthew 716: my @Data = @{$curve->{'data'}};
1.9 matthew 717: my @Data0 = @{$Data[0]};
718: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 719: my $dataset;
1.6 matthew 720: foreach $dataset (@Data) {
1.9 matthew 721: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 722: }
1.9 matthew 723: $datatext .= $/;
1.6 matthew 724: }
1.9 matthew 725: $datatext .=$/;
1.6 matthew 726: }
727: }
1.9 matthew 728: $gnuplot_input .= $/.$datatext;
1.10 matthew 729: return $gnuplot_input;
1.2 matthew 730: }
1.20 ! matthew 731: #------------------------------------------------ make_edit
! 732: sub edit_attributes {
! 733: my $target = shift;
! 734: my $token = shift;
! 735: my $defaults = shift;
! 736: my $result;
! 737: foreach my $attr (%{$token->[2]}) {
! 738: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
! 739: $result .= &Apache::edit::text_arg(
! 740: $defaults->{$attr}->{'description'},
! 741: $attr,
! 742: $token);
! 743: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
! 744: $result .= &Apache::edit::select_arg(
! 745: $defaults->{$attr}->{'description'},
! 746: $attr,
! 747: $defaults->{$attr}->{'choices'},
! 748: $token);
! 749: }
! 750: }
! 751: return $result;
! 752: }
1.1 matthew 753:
1.20 ! matthew 754: #------------------------------------------------ insert_xxxxxxx
! 755: sub insert_plot {
! 756: my $result;
! 757: # plot attributes
! 758: $result .= '<plot ';
! 759: foreach my $attr (%plot_defaults) {
! 760: $result .= ' '.$attr.' "'.$plot_defaults{$attr}->{'default'}.
! 761: "\"\n";
! 762: }
! 763: $result .= ">\n";
! 764: # Add the components
! 765: $result .= &insert_key();
! 766: $result .= &insert_axis();
! 767: $result .= &insert_label();
! 768: $result .= &insert_curve();
! 769: $result .= &insert_function();
! 770: $result .= "</curve>\n";
! 771: $result .= &insert_curve();
! 772: $result .= &insert_data();
! 773: $result .= "</curve>\n";
! 774: # close up the <plot>
! 775: $result .= "</plot>\n";
! 776: return $result;
! 777: }
! 778:
! 779: sub insert_key {
! 780: my $result;
! 781: $result .= ' <key ';
! 782: foreach my $attr (%key_defaults) {
! 783: $result .= ' '.$attr.' "'.$key_defaults{$attr}->{'default'}.
! 784: "\"\n";
! 785: }
! 786: $result .= " />\n";
! 787: return $result;
! 788: }
! 789:
! 790: sub insert_axis{
! 791: my $result;
! 792: $result .= ' <axis ';
! 793: foreach my $attr (%axis_defaults) {
! 794: $result .= ' '.$attr.' "'.$axis_defaults{$attr}->{'default'}.
! 795: "\"\n";
! 796: }
! 797: $result .= " />\n";
! 798: return $result;
! 799: }
! 800:
! 801: sub insert_label {
! 802: my $result;
! 803: $result .= ' <label ';
! 804: foreach my $attr (%label_defaults) {
! 805: $result .= ' '.$attr.' "'.
! 806: $label_defaults{$attr}->{'default'}."\"\n";
! 807: }
! 808: $result .= " ></label>\n";
! 809: return $result;
! 810: }
! 811:
! 812: sub insert_curve {
! 813: my $result;
! 814: $result .= ' <curve ';
! 815: foreach my $attr (%curve_defaults) {
! 816: $result .= ' '.$attr.' "'.
! 817: $curve_defaults{$attr}->{'default'}."\"\n";
! 818: }
! 819: $result .= " >\n";
! 820: }
1.4 matthew 821:
1.20 ! matthew 822: sub insert_function {
! 823: my $result;
! 824: $result .= "<function></function>\n";
! 825: return $result;
! 826: }
1.4 matthew 827:
1.20 ! matthew 828: sub insert_data {
! 829: my $result;
! 830: $result .= " <data></data>\n";
! 831: $result .= " <data></data>\n";
! 832: return $result;
! 833: }
1.4 matthew 834:
1.20 ! matthew 835: 1;
! 836: __END__
1.4 matthew 837:
838:
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