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- backport lonplot.pm 1.91, lonxml.pm 1.281
1: # The LearningOnline Network with CAPA 2: # Dynamic plot 3: # 4: # $Id: lonplot.pm,v 1.85.2.1 2003/09/27 04:15:26 albertel Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: # 12/15/01 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 31: # 01/02 01/03 01/04 01/07 01/08 01/09 Matthew 32: # 01/21 02/05 02/06 2/28Matthew 33: 34: package Apache::lonplot; 35: 36: use strict; 37: use Apache::File; 38: use Apache::response; 39: use Apache::lonxml; 40: use Apache::edit; 41: 42: BEGIN { 43: &Apache::lonxml::register('Apache::lonplot',('gnuplot')); 44: } 45: 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 59: ## align 60: ## 61: ## @labels: $labels[$i] = \%label 62: ## %label: text, xpos, ypos, justify 63: ## 64: ## @curves: $curves[$i] = \%curve 65: ## %curve: name, linestyle, ( function | data ) 66: ## 67: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4], 68: ## [y1,y2,y3,y4] ] 69: ## 70: 71: ################################################################### 72: ## ## 73: ## Tests used in checking the validitity of input ## 74: ## ## 75: ################################################################### 76: 77: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text 78: # is longer than this, it will be truncated. 79: 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, 89: errorbars => 3, 90: xerrorbars => [3,4], 91: yerrorbars => [3,4], 92: xyerrorbars => [4,6], 93: boxes => 3, 94: vector => 4 95: ); 96: 97: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/}; 98: my $real_test = 99: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/}; 100: my $pos_real_test = 101: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/}; 102: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/}; 103: my $onoff_test = sub {$_[0]=~/^(on|off)$/}; 104: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/}; 105: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/}; 106: my $linestyle_test = sub {exists($linestyles{$_[0]})}; 107: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/}; 108: 109: ################################################################### 110: ## ## 111: ## Attribute metadata ## 112: ## ## 113: ################################################################### 114: my @gnuplot_edit_order = 115: qw/alttag bgcolor fgcolor height width font transparent grid samples 116: border align texwidth/; 117: 118: my $gnuplot_help_text = <<"ENDPLOTHELP"; 119: <p> 120: The <b>gnuplot</b> tag allows an author to design a plot which can 121: be created on the fly. This is intended for use in homework problems 122: where each student needs to see a distinct plot. It can be used in 123: conjunction with a <b>script</b> tag to generate random plots. 124: </p><p> 125: A <b>gnuplot</b> tag can contain the following sub-tags: 126: </p> 127: <dl> 128: <dt> Plot Label 129: <dd> Allows you to place text at a given (x,y) coordinate on the plot. 130: <dt> Plot Title 131: <dd> The title of the plot 132: <dt> Plot Xlabel 133: <dd> The label on the horizontal axis of the plot 134: <dt> Plot Ylabel 135: <dd> The label on the vertical axis of the plot 136: <dt> Plot Axes 137: <dd> allows specification of the x and y ranges displayed in the plot 138: <dt> Plot Key 139: <dd> Lists the functions displayed in the plot. 140: <dt> Plot Curve 141: <dd> Sets the data used in the plot. 142: <dt> Plot Tics 143: <dd> Allows specification of the x and y coordinate 'tics' on the axes. 144: This is mostly used to adjust the grid lines when a grid is displayed. 145: </dl> 146: If you are having trouble with your plot, please read the help 147: available on Plot Curve. 148: ENDPLOTHELP 149: 150: my %gnuplot_defaults = 151: ( 152: alttag => { 153: default => 'dynamically generated plot', 154: test => $words_test, 155: description => 'brief description of the plot', 156: edit_type => 'entry', 157: size => '40' 158: }, 159: height => { 160: default => 300, 161: test => $int_test, 162: description => 'height of image (pixels)', 163: edit_type => 'entry', 164: size => '10' 165: }, 166: width => { 167: default => 400, 168: test => $int_test, 169: description => 'width of image (pixels)', 170: edit_type => 'entry', 171: size => '10' 172: }, 173: bgcolor => { 174: default => 'xffffff', 175: test => $color_test, 176: description => 'background color of image (xffffff)', 177: edit_type => 'entry', 178: size => '10' 179: }, 180: fgcolor => { 181: default => 'x000000', 182: test => $color_test, 183: description => 'foreground color of image (x000000)', 184: edit_type => 'entry', 185: size => '10' 186: }, 187: transparent => { 188: default => 'off', 189: test => $onoff_test, 190: description => 'Transparent image', 191: edit_type => 'onoff' 192: }, 193: grid => { 194: default => 'on', 195: test => $onoff_test, 196: description => 'Display grid', 197: edit_type => 'onoff' 198: }, 199: border => { 200: default => 'on', 201: test => $onoff_test, 202: description => 'Draw border around plot', 203: edit_type => 'onoff' 204: }, 205: font => { 206: default => 'medium', 207: test => $sml_test, 208: description => 'Size of font to use', 209: edit_type => 'choice', 210: choices => ['small','medium','large'] 211: }, 212: samples => { 213: default => '100', 214: test => $int_test, 215: description => 'Number of samples for non-data plots', 216: edit_type => 'choice', 217: choices => ['100','200','500','1000','2000','5000'] 218: }, 219: align => { 220: default => 'center', 221: test => sub {$_[0]=~/^(left|right|center)$/}, 222: description => 'alignment for image in html', 223: edit_type => 'choice', 224: choices => ['left','right','center'] 225: }, 226: texwidth => { 227: default => '93', 228: test => $int_test, 229: description => 'Width of plot when printed (mm)', 230: edit_type => 'entry', 231: size => '5' 232: }, 233: ); 234: 235: my %key_defaults = 236: ( 237: title => { 238: default => '', 239: test => $words_test, 240: description => 'Title of key', 241: edit_type => 'entry', 242: size => '40' 243: }, 244: box => { 245: default => 'off', 246: test => $onoff_test, 247: description => 'Draw a box around the key?', 248: edit_type => 'onoff' 249: }, 250: pos => { 251: default => 'top right', 252: test => $key_pos_test, 253: description => 'position of the key on the plot', 254: edit_type => 'choice', 255: choices => ['top left','top right','bottom left','bottom right', 256: 'outside','below'] 257: } 258: ); 259: 260: my %label_defaults = 261: ( 262: xpos => { 263: default => 0, 264: test => $real_test, 265: description => 'x position of label (graph coordinates)', 266: edit_type => 'entry', 267: size => '10' 268: }, 269: ypos => { 270: default => 0, 271: test => $real_test, 272: description => 'y position of label (graph coordinates)', 273: edit_type => 'entry', 274: size => '10' 275: }, 276: justify => { 277: default => 'left', 278: test => sub {$_[0]=~/^(left|right|center)$/}, 279: description => 'justification of the label text on the plot', 280: edit_type => 'choice', 281: choices => ['left','right','center'] 282: } 283: ); 284: 285: my @tic_edit_order = ('location','mirror','start','increment','end'); 286: my %tic_defaults = 287: ( 288: location => { 289: default => 'border', 290: test => sub {$_[0]=~/^(border|axis)$/}, 291: description => 'Location of tick marks', 292: edit_type => 'choice', 293: choices => ['border','axis'] 294: }, 295: mirror => { 296: default => 'on', 297: test => $onoff_test, 298: description => 'mirror ticks on opposite axis?', 299: edit_type => 'onoff' 300: }, 301: start => { 302: default => '-10.0', 303: test => $real_test, 304: description => 'Start ticks at', 305: edit_type => 'entry', 306: size => '10' 307: }, 308: increment => { 309: default => '1.0', 310: test => $real_test, 311: description => 'Place a tick every', 312: edit_type => 'entry', 313: size => '10' 314: }, 315: end => { 316: default => ' 10.0', 317: test => $real_test, 318: description => 'Stop ticks at ', 319: edit_type => 'entry', 320: size => '10' 321: }, 322: ); 323: 324: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax'); 325: my %axis_defaults = 326: ( 327: color => { 328: default => 'x000000', 329: test => $color_test, 330: description => 'color of grid lines (x000000)', 331: edit_type => 'entry', 332: size => '10' 333: }, 334: xmin => { 335: default => '-10.0', 336: test => $real_test, 337: description => 'minimum x-value shown in plot', 338: edit_type => 'entry', 339: size => '10' 340: }, 341: xmax => { 342: default => ' 10.0', 343: test => $real_test, 344: description => 'maximum x-value shown in plot', 345: edit_type => 'entry', 346: size => '10' 347: }, 348: ymin => { 349: default => '-10.0', 350: test => $real_test, 351: description => 'minimum y-value shown in plot', 352: edit_type => 'entry', 353: size => '10' 354: }, 355: ymax => { 356: default => ' 10.0', 357: test => $real_test, 358: description => 'maximum y-value shown in plot', 359: edit_type => 'entry', 360: size => '10' 361: } 362: ); 363: 364: my $curve_help_text = <<"ENDCURVEHELP"; 365: The <b>curve</b> tag is where you set the data to be plotted by gnuplot. 366: There are two ways of entering the information: 367: <dl> 368: <dt> Curve Data 369: <dd> Using a <b>data</b> tag you can specify the numbers used to produce 370: the plot. 371: <p> 372: By default, two <b>data</b> tags will be available in a plot. The 373: first will specify X coordinates of the data and the second will 374: give the Y coordinates of the data. When working with a linestyle that 375: requires more than two data sets, inserting another <b>data</b> tag is 376: required. Unfortunately, you must make sure the <b>data</b> tags appear 377: in the order gnuplot expects the data. 378: </p><p> 379: Specifying the data should usually be done with a perl variable or array, 380: such as \@Xdata and \@Ydata. You may also specify numerical data seperated 381: by commas. Again, the order of the <b>data</b> tags is important. The 382: first tag will be the X data and the second will be the Y data. 383: </p> 384: <dt> Curve Function 385: <dd> The <b>function</b> tag allows you to specify the curve to be 386: plotted as a formula that gnuplot can understand. <b>Be careful using this 387: tag.</b> It is surprisingly easy to give gnuplot a function it cannot deal 388: with properly. Be explicit: 2*sin(2*3.141592*x/4) will work but 389: 2sin(2*3.141592x/4) will not. If you do not receive any errors in the 390: gnuplot data but still do not have an image produced, it is likely there 391: is an error in your <b>function</b> tag. 392: </dl> 393: ENDCURVEHELP 394: 395: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize'); 396: 397: my %curve_defaults = 398: ( 399: color => { 400: default => 'x000000', 401: test => $color_test, 402: description => 'color of curve (x000000)', 403: edit_type => 'entry', 404: size => '10' 405: }, 406: name => { 407: default => '', 408: test => $words_test, 409: description => 'name of curve to appear in key', 410: edit_type => 'entry', 411: size => '20' 412: }, 413: linestyle => { 414: default => 'lines', 415: test => $linestyle_test, 416: description => 'Line style', 417: edit_type => 'choice', 418: choices => [keys(%linestyles)] 419: }, 420: # gnuplots term=gif driver does not handle linewidth :( 421: # linewidth => { 422: # default => 1, 423: # test => $int_test, 424: # description => 'Line width (may not apply to all line styles)', 425: # edit_type => 'choice', 426: # choices => [1,2,3,4,5,6,7,8,9,10] 427: # }, 428: pointsize => { 429: default => 1, 430: test => $pos_real_test, 431: description => 'point size (may not apply to all line styles)', 432: edit_type => 'entry', 433: size => '5' 434: }, 435: pointtype => { 436: default => 1, 437: test => $int_test, 438: description => 'point type (may not apply to all line styles)', 439: edit_type => 'choice', 440: choices => [0,1,2,3,4,5,6] 441: } 442: ); 443: 444: ################################################################### 445: ## ## 446: ## parsing and edit rendering ## 447: ## ## 448: ################################################################### 449: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics); 450: 451: sub start_gnuplot { 452: %plot = (); %key = (); %axis = (); 453: $title = undef; $xlabel = undef; $ylabel = undef; 454: $#labels = -1; $#curves = -1; 455: %xtics = (); %ytics = (); 456: # 457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 458: my $result=''; 459: &Apache::lonxml::register('Apache::lonplot', 460: ('title','xlabel','ylabel','key','axis','label','curve', 461: 'xtics','ytics')); 462: push (@Apache::lonxml::namespace,'lonplot'); 463: if ($target eq 'web' || $target eq 'tex') { 464: &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval, 465: $tagstack->[-1]); 466: } elsif ($target eq 'edit') { 467: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot'); 468: $result .= &make_javascript(); 469: $result .= &help_win($gnuplot_help_text); 470: $result .= &edit_attributes($target,$token,\%gnuplot_defaults, 471: \@gnuplot_edit_order); 472: } elsif ($target eq 'modified') { 473: my $constructtag=&Apache::edit::get_new_args 474: ($token,$parstack,$safeeval,keys(%gnuplot_defaults)); 475: if ($constructtag) { 476: $result = &Apache::edit::rebuild_tag($token); 477: } 478: } 479: return $result; 480: } 481: 482: sub end_gnuplot { 483: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 484: pop @Apache::lonxml::namespace; 485: &Apache::lonxml::deregister('Apache::lonplot', 486: ('title','xlabel','ylabel','key','axis','label','curve')); 487: my $result = ''; 488: my $randnumber; 489: # need to call rand everytime start_script would evaluate, as the 490: # safe space rand number generator and the global rand generator 491: # are not seperate 492: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || 493: $target eq 'answer') { 494: $randnumber=int(rand(1000)); 495: } 496: if ($target eq 'web' || $target eq 'tex') { 497: &check_inputs(); # Make sure we have all the data we need 498: ## 499: ## Determine filename 500: my $tmpdir = '/home/httpd/perl/tmp/'; 501: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}. 502: '_'.time.'_'.$$.$randnumber.'_plot'; 503: ## Write the plot description to the file 504: &write_gnuplot_file($tmpdir,$filename,$target); 505: $filename = &Apache::lonnet::escape($filename); 506: ## return image tag for the plot 507: if ($target eq 'web') { 508: $result .= <<"ENDIMAGE"; 509: <img src = "/cgi-bin/plot.gif?file=$filename.data&output=gif" 510: width = "$plot{'width'}" 511: height = "$plot{'height'}" 512: align = "$plot{'align'}" 513: alt = "$plot{'alttag'}" /> 514: ENDIMAGE 515: } elsif ($target eq 'tex') { 516: #might be inside the safe space, register the URL for later 517: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps"); 518: $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}'; 519: } 520: } elsif ($target eq 'edit') { 521: $result.=&Apache::edit::tag_end($target,$token); 522: } 523: return $result; 524: } 525: 526: 527: ##--------------------------------------------------------------- xtics 528: sub start_xtics { 529: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 530: my $result=''; 531: if ($target eq 'web' || $target eq 'tex') { 532: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval, 533: $tagstack->[-1]); 534: } elsif ($target eq 'edit') { 535: $result .= &Apache::edit::tag_start($target,$token,'xtics'); 536: $result .= &edit_attributes($target,$token,\%tic_defaults, 537: \@tic_edit_order); 538: } elsif ($target eq 'modified') { 539: my $constructtag=&Apache::edit::get_new_args 540: ($token,$parstack,$safeeval,keys(%tic_defaults)); 541: if ($constructtag) { 542: $result = &Apache::edit::rebuild_tag($token); 543: } 544: } 545: return $result; 546: } 547: 548: sub end_xtics { 549: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 550: my $result = ''; 551: if ($target eq 'web' || $target eq 'tex') { 552: } elsif ($target eq 'edit') { 553: $result.=&Apache::edit::tag_end($target,$token); 554: } 555: return $result; 556: } 557: 558: ##--------------------------------------------------------------- ytics 559: sub start_ytics { 560: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 561: my $result=''; 562: if ($target eq 'web' || $target eq 'tex') { 563: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval, 564: $tagstack->[-1]); 565: } elsif ($target eq 'edit') { 566: $result .= &Apache::edit::tag_start($target,$token,'ytics'); 567: $result .= &edit_attributes($target,$token,\%tic_defaults, 568: \@tic_edit_order); 569: } elsif ($target eq 'modified') { 570: my $constructtag=&Apache::edit::get_new_args 571: ($token,$parstack,$safeeval,keys(%tic_defaults)); 572: if ($constructtag) { 573: $result = &Apache::edit::rebuild_tag($token); 574: } 575: } 576: return $result; 577: } 578: 579: sub end_ytics { 580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 581: my $result = ''; 582: if ($target eq 'web' || $target eq 'tex') { 583: } elsif ($target eq 'edit') { 584: $result.=&Apache::edit::tag_end($target,$token); 585: } 586: return $result; 587: } 588: 589: 590: ##----------------------------------------------------------------- key 591: sub start_key { 592: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 593: my $result=''; 594: if ($target eq 'web' || $target eq 'tex') { 595: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval, 596: $tagstack->[-1]); 597: } elsif ($target eq 'edit') { 598: $result .= &Apache::edit::tag_start($target,$token,'Plot Key'); 599: $result .= &edit_attributes($target,$token,\%key_defaults); 600: } elsif ($target eq 'modified') { 601: my $constructtag=&Apache::edit::get_new_args 602: ($token,$parstack,$safeeval,keys(%key_defaults)); 603: if ($constructtag) { 604: $result = &Apache::edit::rebuild_tag($token); 605: } 606: } 607: return $result; 608: } 609: 610: sub end_key { 611: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 612: my $result = ''; 613: if ($target eq 'web' || $target eq 'tex') { 614: } elsif ($target eq 'edit') { 615: $result.=&Apache::edit::tag_end($target,$token); 616: } 617: return $result; 618: } 619: 620: ##------------------------------------------------------------------- title 621: sub start_title { 622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 623: my $result=''; 624: if ($target eq 'web' || $target eq 'tex') { 625: $title = &Apache::lonxml::get_all_text("/title",$parser); 626: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]); 627: $title =~ s/\n/ /g; 628: if (length($title) > $max_str_len) { 629: $title = substr($title,0,$max_str_len); 630: } 631: } elsif ($target eq 'edit') { 632: $result.=&Apache::edit::tag_start($target,$token,'Plot Title'); 633: my $text=&Apache::lonxml::get_all_text("/title",$parser); 634: $result.=&Apache::edit::end_row(). 635: &Apache::edit::start_spanning_row(). 636: &Apache::edit::editline('',$text,'',60); 637: } elsif ($target eq 'modified') { 638: my $text=$$parser[-1]->get_text("/title"); 639: $result.=&Apache::edit::rebuild_tag($token); 640: $result.=&Apache::edit::modifiedfield($token); 641: } 642: return $result; 643: } 644: 645: sub end_title { 646: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 647: my $result = ''; 648: if ($target eq 'web' || $target eq 'tex') { 649: } elsif ($target eq 'edit') { 650: $result.=&Apache::edit::tag_end($target,$token); 651: } 652: return $result; 653: } 654: ##------------------------------------------------------------------- xlabel 655: sub start_xlabel { 656: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 657: my $result=''; 658: if ($target eq 'web' || $target eq 'tex') { 659: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser); 660: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]); 661: $xlabel =~ s/\n/ /g; 662: if (length($xlabel) > $max_str_len) { 663: $xlabel = substr($xlabel,0,$max_str_len); 664: } 665: } elsif ($target eq 'edit') { 666: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel'); 667: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser); 668: $result.=&Apache::edit::end_row(). 669: &Apache::edit::start_spanning_row(). 670: &Apache::edit::editline('',$text,'',60); 671: } elsif ($target eq 'modified') { 672: my $text=$$parser[-1]->get_text("/xlabel"); 673: $result.=&Apache::edit::rebuild_tag($token); 674: $result.=&Apache::edit::modifiedfield($token); 675: } 676: return $result; 677: } 678: 679: sub end_xlabel { 680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 681: my $result = ''; 682: if ($target eq 'web' || $target eq 'tex') { 683: } elsif ($target eq 'edit') { 684: $result.=&Apache::edit::tag_end($target,$token); 685: } 686: return $result; 687: } 688: 689: ##------------------------------------------------------------------- ylabel 690: sub start_ylabel { 691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 692: my $result=''; 693: if ($target eq 'web' || $target eq 'tex') { 694: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser); 695: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]); 696: $ylabel =~ s/\n/ /g; 697: if (length($ylabel) > $max_str_len) { 698: $ylabel = substr($ylabel,0,$max_str_len); 699: } 700: } elsif ($target eq 'edit') { 701: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel'); 702: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser); 703: $result .= &Apache::edit::end_row(). 704: &Apache::edit::start_spanning_row(). 705: &Apache::edit::editline('',$text,'',60); 706: } elsif ($target eq 'modified') { 707: my $text=$$parser[-1]->get_text("/ylabel"); 708: $result.=&Apache::edit::rebuild_tag($token); 709: $result.=&Apache::edit::modifiedfield($token); 710: } 711: return $result; 712: } 713: 714: sub end_ylabel { 715: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 716: my $result = ''; 717: if ($target eq 'web' || $target eq 'tex') { 718: } elsif ($target eq 'edit') { 719: $result.=&Apache::edit::tag_end($target,$token); 720: } 721: return $result; 722: } 723: 724: ##------------------------------------------------------------------- label 725: sub start_label { 726: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 727: my $result=''; 728: if ($target eq 'web' || $target eq 'tex') { 729: my %label; 730: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval, 731: $tagstack->[-1]); 732: my $text = &Apache::lonxml::get_all_text("/label",$parser); 733: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]); 734: $text =~ s/\n/ /g; 735: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len); 736: $label{'text'} = $text; 737: push(@labels,\%label); 738: } elsif ($target eq 'edit') { 739: $result .= &Apache::edit::tag_start($target,$token,'Plot Label'); 740: $result .= &edit_attributes($target,$token,\%label_defaults); 741: my $text = &Apache::lonxml::get_all_text("/label",$parser); 742: $result .= &Apache::edit::end_row(). 743: &Apache::edit::start_spanning_row(). 744: &Apache::edit::editline('',$text,'',60); 745: } elsif ($target eq 'modified') { 746: &Apache::edit::get_new_args 747: ($token,$parstack,$safeeval,keys(%label_defaults)); 748: $result.=&Apache::edit::rebuild_tag($token); 749: my $text=$$parser[-1]->get_text("/label"); 750: $result.=&Apache::edit::modifiedfield($token); 751: } 752: return $result; 753: } 754: 755: sub end_label { 756: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 757: my $result = ''; 758: if ($target eq 'web' || $target eq 'tex') { 759: } elsif ($target eq 'edit') { 760: $result.=&Apache::edit::tag_end($target,$token); 761: } 762: return $result; 763: } 764: 765: ##------------------------------------------------------------------- curve 766: sub start_curve { 767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 768: my $result=''; 769: &Apache::lonxml::register('Apache::lonplot',('function','data')); 770: push (@Apache::lonxml::namespace,'curve'); 771: if ($target eq 'web' || $target eq 'tex') { 772: my %curve; 773: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval, 774: $tagstack->[-1]); 775: push (@curves,\%curve); 776: } elsif ($target eq 'edit') { 777: $result .= &Apache::edit::tag_start($target,$token,'Curve'); 778: $result .= &help_win($curve_help_text); 779: $result .= &edit_attributes($target,$token,\%curve_defaults, 780: \@curve_edit_order); 781: } elsif ($target eq 'modified') { 782: my $constructtag=&Apache::edit::get_new_args 783: ($token,$parstack,$safeeval,keys(%curve_defaults)); 784: if ($constructtag) { 785: $result = &Apache::edit::rebuild_tag($token); 786: $result.= &Apache::edit::handle_insert(); 787: } 788: } 789: return $result; 790: } 791: 792: sub end_curve { 793: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 794: my $result = ''; 795: pop @Apache::lonxml::namespace; 796: &Apache::lonxml::deregister('Apache::lonplot',('function','data')); 797: if ($target eq 'web' || $target eq 'tex') { 798: } elsif ($target eq 'edit') { 799: $result.=&Apache::edit::tag_end($target,$token); 800: } 801: return $result; 802: } 803: 804: ##------------------------------------------------------------ curve function 805: sub start_function { 806: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 807: my $result=''; 808: if ($target eq 'web' || $target eq 'tex') { 809: if (exists($curves[-1]->{'data'})) { 810: &Apache::lonxml::warning 811: ('Use of the <b>curve function</b> tag precludes use of '. 812: ' the <b>curve data</b> tag. '. 813: 'The curve data tag will be omitted in favor of the '. 814: 'curve function declaration.'); 815: delete $curves[-1]->{'data'} ; 816: } 817: my $function = &Apache::lonxml::get_all_text("/function",$parser); 818: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]); 819: $curves[-1]->{'function'} = $function; 820: } elsif ($target eq 'edit') { 821: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function'); 822: my $text = &Apache::lonxml::get_all_text("/function",$parser); 823: $result .= &Apache::edit::end_row(). 824: &Apache::edit::start_spanning_row(). 825: &Apache::edit::editline('',$text,'',60); 826: } elsif ($target eq 'modified') { 827: $result.=&Apache::edit::rebuild_tag($token); 828: my $text=$$parser[-1]->get_text("/function"); 829: $result.=&Apache::edit::modifiedfield($token); 830: } 831: return $result; 832: } 833: 834: sub end_function { 835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 836: my $result = ''; 837: if ($target eq 'web' || $target eq 'tex') { 838: } elsif ($target eq 'edit') { 839: $result .= &Apache::edit::end_table(); 840: } 841: return $result; 842: } 843: 844: ##------------------------------------------------------------ curve data 845: sub start_data { 846: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 847: my $result=''; 848: if ($target eq 'web' || $target eq 'tex') { 849: if (exists($curves[-1]->{'function'})) { 850: &Apache::lonxml::warning 851: ('Use of the <b>curve function</b> tag precludes use of '. 852: ' the <b>curve data</b> tag. '. 853: 'The curve function tag will be omitted in favor of the '. 854: 'curve data declaration.'); 855: delete($curves[-1]->{'function'}); 856: } 857: my $datatext = &Apache::lonxml::get_all_text("/data",$parser); 858: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]); 859: # Deal with cases where we're given an array... 860: if ($datatext =~ /^\@/) { 861: $datatext = &Apache::run::run('return "'.$datatext.'"', 862: $safeeval,1); 863: } 864: $datatext =~ s/\s+/ /g; 865: # Need to do some error checking on the @data array - 866: # make sure it's all numbers and make sure each array 867: # is of the same length. 868: my @data; 869: if ($datatext =~ /,/) { # comma deliminated 870: @data = split /,/,$datatext; 871: } else { # Assume it's space seperated. 872: @data = split / /,$datatext; 873: } 874: for (my $i=0;$i<=$#data;$i++) { 875: # Check that it's non-empty 876: if (! defined($data[$i])) { 877: &Apache::lonxml::warning( 878: 'undefined curve data value. Replacing with '. 879: ' pi/e = 1.15572734979092'); 880: $data[$i] = 1.15572734979092; 881: } 882: # Check that it's a number 883: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) { 884: &Apache::lonxml::warning( 885: 'Bad curve data value of '.$data[$i].' Replacing with '. 886: ' pi/e = 1.15572734979092'); 887: $data[$i] = 1.15572734979092; 888: } 889: } 890: # complain if the number of data points is not the same as 891: # in previous sets of data. 892: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){ 893: &Apache::lonxml::warning 894: ('Number of data points is not consistent with previous '. 895: 'number of data points'); 896: } 897: push @{$curves[-1]->{'data'}},\@data; 898: } elsif ($target eq 'edit') { 899: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data'); 900: my $text = &Apache::lonxml::get_all_text("/data",$parser); 901: $result .= &Apache::edit::end_row(). 902: &Apache::edit::start_spanning_row(). 903: &Apache::edit::editline('',$text,'',60); 904: } elsif ($target eq 'modified') { 905: $result.=&Apache::edit::rebuild_tag($token); 906: my $text=$$parser[-1]->get_text("/data"); 907: $result.=&Apache::edit::modifiedfield($token); 908: } 909: return $result; 910: } 911: 912: sub end_data { 913: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 914: my $result = ''; 915: if ($target eq 'web' || $target eq 'tex') { 916: } elsif ($target eq 'edit') { 917: $result .= &Apache::edit::end_table(); 918: } 919: return $result; 920: } 921: 922: ##------------------------------------------------------------------- axis 923: sub start_axis { 924: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 925: my $result=''; 926: if ($target eq 'web' || $target eq 'tex') { 927: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval, 928: $tagstack->[-1]); 929: } elsif ($target eq 'edit') { 930: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes'); 931: $result .= &edit_attributes($target,$token,\%axis_defaults, 932: \@axis_edit_order); 933: } elsif ($target eq 'modified') { 934: my $constructtag=&Apache::edit::get_new_args 935: ($token,$parstack,$safeeval,keys(%axis_defaults)); 936: if ($constructtag) { 937: $result = &Apache::edit::rebuild_tag($token); 938: } 939: } 940: return $result; 941: } 942: 943: sub end_axis { 944: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 945: my $result = ''; 946: if ($target eq 'web' || $target eq 'tex') { 947: } elsif ($target eq 'edit') { 948: $result.=&Apache::edit::tag_end($target,$token); 949: } elsif ($target eq 'modified') { 950: } 951: return $result; 952: } 953: 954: ################################################################### 955: ## ## 956: ## Utility Functions ## 957: ## ## 958: ################################################################### 959: 960: ##----------------------------------------------------------- set_defaults 961: sub set_defaults { 962: my ($var,$defaults) = @_; 963: my $key; 964: foreach $key (keys(%$defaults)) { 965: $var->{$key} = $defaults->{$key}->{'default'}; 966: } 967: } 968: 969: ##------------------------------------------------------------------- misc 970: sub get_attributes{ 971: my ($values,$defaults,$parstack,$safeeval,$tag) = @_; 972: foreach my $attr (keys(%{$defaults})) { 973: $values->{$attr} = 974: &Apache::lonxml::get_param($attr,$parstack,$safeeval); 975: if ($values->{$attr} eq '' | !defined($values->{$attr})) { 976: $values->{$attr} = $defaults->{$attr}->{'default'}; 977: next; 978: } 979: my $test = $defaults->{$attr}->{'test'}; 980: if (! &$test($values->{$attr})) { 981: &Apache::lonxml::warning 982: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : ' 983: .$defaults->{$attr}->{'default'} ); 984: $values->{$attr} = $defaults->{$attr}->{'default'}; 985: } 986: } 987: return ; 988: } 989: 990: ##------------------------------------------------------- write_gnuplot_file 991: sub write_gnuplot_file { 992: my ($tmpdir,$filename,$target)= @_; 993: my $gnuplot_input = ''; 994: my $curve; 995: # Collect all the colors 996: my @Colors; 997: push @Colors, $plot{'bgcolor'}; 998: push @Colors, $plot{'fgcolor'}; 999: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'}); 1000: foreach $curve (@curves) { 1001: push @Colors, ($curve->{'color'} ne '' ? 1002: $curve->{'color'} : 1003: $plot{'fgcolor'} ); 1004: } 1005: # set term 1006: if ($target eq 'web') { 1007: $gnuplot_input .= 'set term gif '; 1008: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on'); 1009: $gnuplot_input .= $plot{'font'} . ' '; 1010: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' '; 1011: $gnuplot_input .= "@Colors\n"; 1012: # set output 1013: $gnuplot_input .= "set output\n"; 1014: } elsif ($target eq 'tex') { 1015: $gnuplot_input .= "set term postscript eps monochrome solid\n"; 1016: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/". 1017: &Apache::lonnet::unescape($filename).".eps\"\n"; 1018: } 1019: # grid 1020: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on'); 1021: # border 1022: $gnuplot_input .= ($plot{'border'} eq 'on'? 1023: 'set border'.$/ : 1024: 'set noborder'.$/ ); 1025: # sampling rate for non-data curves 1026: $gnuplot_input .= "set samples $plot{'samples'}\n"; 1027: # title, xlabel, ylabel 1028: # titles 1029: $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ; 1030: $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel)); 1031: $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel)); 1032: # tics 1033: if (%xtics) { 1034: $gnuplot_input .= "set xtics $xtics{'location'} "; 1035: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror "); 1036: $gnuplot_input .= "$xtics{'start'}, "; 1037: $gnuplot_input .= "$xtics{'increment'}, "; 1038: $gnuplot_input .= "$xtics{'end'}\n"; 1039: } 1040: if (%ytics) { 1041: $gnuplot_input .= "set ytics $ytics{'location'} "; 1042: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror "); 1043: $gnuplot_input .= "$ytics{'start'}, "; 1044: $gnuplot_input .= "$ytics{'increment'}, "; 1045: $gnuplot_input .= "$ytics{'end'}\n"; 1046: } 1047: # axis 1048: if (%axis) { 1049: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n"; 1050: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n"; 1051: } 1052: # Key 1053: if (%key) { 1054: $gnuplot_input .= 'set key '.$key{'pos'}.' '; 1055: if ($key{'title'} ne '') { 1056: $gnuplot_input .= 'title "'.$key{'title'}.'" '; 1057: } 1058: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/; 1059: } else { 1060: $gnuplot_input .= 'set nokey'.$/; 1061: } 1062: # labels 1063: my $label; 1064: foreach $label (@labels) { 1065: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. 1066: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ; 1067: } 1068: if ($target eq 'tex') { 1069: $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38; 1070: $gnuplot_input .="\n"; 1071: } 1072: # curves 1073: $gnuplot_input .= 'plot '; 1074: for (my $i = 0;$i<=$#curves;$i++) { 1075: $curve = $curves[$i]; 1076: $gnuplot_input.= ', ' if ($i > 0); 1077: if (exists($curve->{'function'})) { 1078: $gnuplot_input.= 1079: $curve->{'function'}.' title "'. 1080: $curve->{'name'}.'" with '. 1081: $curve->{'linestyle'}; 1082: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex'); 1083: if (($curve->{'linestyle'} eq 'points') || 1084: ($curve->{'linestyle'} eq 'linespoints') || 1085: ($curve->{'linestyle'} eq 'errorbars') || 1086: ($curve->{'linestyle'} eq 'xerrorbars') || 1087: ($curve->{'linestyle'} eq 'yerrorbars') || 1088: ($curve->{'linestyle'} eq 'xyerrorbars')) { 1089: $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; 1090: $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; 1091: } 1092: } elsif (exists($curve->{'data'})) { 1093: # Store data values in $datatext 1094: my $datatext = ''; 1095: # get new filename 1096: my $datafilename = "$tmpdir/$filename.data.$i"; 1097: my $fh=Apache::File->new(">$datafilename"); 1098: # Compile data 1099: my @Data = @{$curve->{'data'}}; 1100: my @Data0 = @{$Data[0]}; 1101: for (my $i =0; $i<=$#Data0; $i++) { 1102: my $dataset; 1103: foreach $dataset (@Data) { 1104: $datatext .= $dataset->[$i] . ' '; 1105: } 1106: $datatext .= $/; 1107: } 1108: # write file 1109: print $fh $datatext; 1110: close ($fh); 1111: # generate gnuplot text 1112: $gnuplot_input.= '"'.$datafilename.'" title "'. 1113: $curve->{'name'}.'" with '. 1114: $curve->{'linestyle'}; 1115: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex'); 1116: if (($curve->{'linestyle'} eq 'points') || 1117: ($curve->{'linestyle'} eq 'linespoints') || 1118: ($curve->{'linestyle'} eq 'errorbars') || 1119: ($curve->{'linestyle'} eq 'xerrorbars') || 1120: ($curve->{'linestyle'} eq 'yerrorbars') || 1121: ($curve->{'linestyle'} eq 'xyerrorbars')) { 1122: $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; 1123: $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; 1124: } 1125: } 1126: } 1127: # Write the output to a file. 1128: my $fh=Apache::File->new(">$tmpdir$filename.data"); 1129: print $fh $gnuplot_input; 1130: close($fh); 1131: # That's all folks. 1132: return ; 1133: } 1134: 1135: #---------------------------------------------- check_inputs 1136: sub check_inputs { 1137: ## Note: no inputs, no outputs - this acts only on global variables. 1138: ## Make sure we have all the input we need: 1139: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); } 1140: if (! %key ) {} # No key for this plot, thats okay 1141: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); } 1142: if (! defined($title )) {} # No title for this plot, thats okay 1143: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay 1144: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay 1145: if ($#labels < 0) { } # No labels for this plot, thats okay 1146: if ($#curves < 0) { 1147: &Apache::lonxml::warning("No curves specified for plot!!!!"); 1148: return ''; 1149: } 1150: my $curve; 1151: foreach $curve (@curves) { 1152: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){ 1153: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n"); 1154: return ''; 1155: } 1156: } 1157: } 1158: 1159: #------------------------------------------------ make_edit 1160: sub edit_attributes { 1161: my ($target,$token,$defaults,$keys) = @_; 1162: my ($result,@keys); 1163: if ($keys && ref($keys) eq 'ARRAY') { 1164: @keys = @$keys; 1165: } else { 1166: @keys = sort(keys(%$defaults)); 1167: } 1168: foreach my $attr (@keys) { 1169: # append a ' ' to the description if it doesn't have one already. 1170: my $description = $defaults->{$attr}->{'description'}; 1171: $description .= ' ' if ($description !~ / $/); 1172: if ($defaults->{$attr}->{'edit_type'} eq 'entry') { 1173: $result .= &Apache::edit::text_arg 1174: ($description,$attr,$token, 1175: $defaults->{$attr}->{'size'}); 1176: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') { 1177: $result .= &Apache::edit::select_arg 1178: ($description,$attr,$defaults->{$attr}->{'choices'},$token); 1179: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') { 1180: $result .= &Apache::edit::select_arg 1181: ($description,$attr,['on','off'],$token); 1182: } 1183: $result .= '<br />'; 1184: } 1185: return $result; 1186: } 1187: 1188: 1189: ################################################################### 1190: ## ## 1191: ## Insertion functions for editing plots ## 1192: ## ## 1193: ################################################################### 1194: 1195: sub insert_gnuplot { 1196: my $result = ''; 1197: # plot attributes 1198: $result .= "\n<gnuplot "; 1199: foreach my $attr (keys(%gnuplot_defaults)) { 1200: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\""; 1201: } 1202: $result .= ">"; 1203: # Add the components (most are commented out for simplicity) 1204: # $result .= &insert_key(); 1205: # $result .= &insert_axis(); 1206: # $result .= &insert_title(); 1207: # $result .= &insert_xlabel(); 1208: # $result .= &insert_ylabel(); 1209: $result .= &insert_curve(); 1210: # close up the <gnuplot> 1211: $result .= "\n</gnuplot>"; 1212: return $result; 1213: } 1214: 1215: sub insert_tics { 1216: my $result; 1217: $result .= &insert_xtics() . &insert_ytics; 1218: return $result; 1219: } 1220: 1221: sub insert_xtics { 1222: my $result; 1223: $result .= "\n <xtics "; 1224: foreach my $attr (keys(%tic_defaults)) { 1225: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" "; 1226: } 1227: $result .= "/>"; 1228: return $result; 1229: } 1230: 1231: sub insert_ytics { 1232: my $result; 1233: $result .= "\n <ytics "; 1234: foreach my $attr (keys(%tic_defaults)) { 1235: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" "; 1236: } 1237: $result .= "/>"; 1238: return $result; 1239: } 1240: 1241: sub insert_key { 1242: my $result; 1243: $result .= "\n <key "; 1244: foreach my $attr (keys(%key_defaults)) { 1245: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\""; 1246: } 1247: $result .= " />"; 1248: return $result; 1249: } 1250: 1251: sub insert_axis{ 1252: my $result; 1253: $result .= "\n <axis "; 1254: foreach my $attr (keys(%axis_defaults)) { 1255: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\""; 1256: } 1257: $result .= " />"; 1258: return $result; 1259: } 1260: 1261: sub insert_title { return "\n <title></title>"; } 1262: sub insert_xlabel { return "\n <xlabel></xlabel>"; } 1263: sub insert_ylabel { return "\n <ylabel></ylabel>"; } 1264: 1265: sub insert_label { 1266: my $result; 1267: $result .= "\n <label "; 1268: foreach my $attr (keys(%label_defaults)) { 1269: $result .= "\n $attr=\"". 1270: $label_defaults{$attr}->{'default'}."\""; 1271: } 1272: $result .= "></label>"; 1273: return $result; 1274: } 1275: 1276: sub insert_curve { 1277: my $result; 1278: $result .= "\n <curve "; 1279: foreach my $attr (keys(%curve_defaults)) { 1280: $result .= "\n $attr=\"". 1281: $curve_defaults{$attr}->{'default'}."\""; 1282: } 1283: $result .= " >"; 1284: $result .= &insert_data().&insert_data()."\n </curve>"; 1285: } 1286: 1287: sub insert_function { 1288: my $result; 1289: $result .= "\n <function></function>"; 1290: return $result; 1291: } 1292: 1293: sub insert_data { 1294: my $result; 1295: $result .= "\n <data></data>"; 1296: return $result; 1297: } 1298: 1299: ##---------------------------------------------------------------------- 1300: # Javascript functions to display help for tags 1301: 1302: sub make_javascript { 1303: my $helpwindowwidth = 400; 1304: my $helpwindowheight = 400; 1305: my $result = ''; 1306: $result.=<<"ENDFUNCTION"; 1307: <script language="JavaScript"> 1308: function openWin(text) 1309: { 1310: newWin = open("", "new_W", "width=$helpwindowwidth,height=$helpwindowheight,resizable=1,scrollbars=1"); 1311: newWin.document.open("text/html", "replace"); 1312: newWin.document.writeln(text); 1313: newWin.document.writeln('<center><a href=\"javascript:window.close()\">close this window</a></center>'); 1314: newWin.document.close(); 1315: } 1316: </script> 1317: ENDFUNCTION 1318: return $result; 1319: } 1320: 1321: sub help_win { 1322: my ($helptext)=@_; 1323: $helptext =~ s/\n/ /g; 1324: $helptext =~ s/\'/\\\'/g; 1325: my $result = ''; 1326: $result.=<<"ENDWIN"; 1327: <table width="100%"><tr><td align="right"> 1328: <a href="javascript:openWin('$helptext')">help</a> 1329: </td></tr></table><hr /> 1330: ENDWIN 1331: return $result; 1332: } 1333: ##---------------------------------------------------------------------- 1334: 1; 1335: __END__ 1336: 1337: