loncom/xml/lonplot.pm - view

File: [LON-CAPA] / loncom / xml / lonplot.pm
Revision 1.146: download - view: text, annotated - select for diffs
Mon Jun 9 10:07:01 2008 UTC (15 years, 11 months ago) by foxr
Branches: MAIN
CVS tags: HEAD

Unconditionally hard-wire the tic fonts for printing to Helvetica.
This is done since the DejaVu sans seems to have a problem with the
mius sign in tick labelling, while helvetica does not.

1: # The LearningOnline Network with CAPA 2: # Dynamic plot 3: # 4: # $Id: lonplot.pm,v 1.146 2008/06/09 10:07:01 foxr Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: 29: package Apache::lonplot; 30: 31: use strict; 32: use warnings FATAL=>'all'; 33: no warnings 'uninitialized'; 34: use Apache::File; 35: use Apache::response; 36: use Apache::lonxml; 37: use Apache::edit; 38: use Apache::lonnet; 39: use LONCAPA; 40: 41: 42: use vars qw/$weboutputformat $version/; 43: 44: 45: 46: BEGIN { 47: &Apache::lonxml::register('Apache::lonplot',('gnuplot')); 48: # 49: # Determine the version of GNUPLOT 50: $weboutputformat = 'gif'; 51: my $versionstring = `gnuplot --version 2>/dev/null`; 52: ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/); 53: if ($version >= 4) { 54: $weboutputformat = 'png'; 55: } 56: 57: } 58: 59: 60: ## 61: ## Description of data structures: 62: ## 63: ## %plot %key %axis 64: ## -------------------------- 65: ## height title color 66: ## width box xmin 67: ## bgcolor pos xmax 68: ## fgcolor ymin 69: ## transparent ymax 70: ## grid 71: ## border 72: ## font 73: ## align 74: ## 75: ## @labels: $labels[$i] = \%label 76: ## %label: text, xpos, ypos, justify 77: ## 78: ## @curves: $curves[$i] = \%curve 79: ## %curve: name, linestyle, ( function | data ) 80: ## 81: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4], 82: ## [y1,y2,y3,y4] ] 83: ## 84: 85: ################################################################### 86: ## ## 87: ## Tests used in checking the validitity of input ## 88: ## ## 89: ################################################################### 90: 91: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text 92: # is longer than this, it will be truncated. 93: 94: my %linetypes = 95: ( 96: solid => 1, 97: dashed => 0 98: ); 99: 100: my %linestyles = 101: ( 102: lines => 2, # Maybe this will be used in the future 103: linespoints => 2, # to check on whether or not they have 104: dots => 2, # supplied enough <data></data> fields 105: points => 2, # to use the given line style. But for 106: steps => 2, # now there are more important things 107: fsteps => 2, # for me to deal with. 108: histeps => 2, 109: errorbars => 3, 110: xerrorbars => [3,4], 111: yerrorbars => [3,4], 112: xyerrorbars => [4,6], 113: boxes => 3, 114: filledcurves => 2, 115: vector => 4 116: ); 117: 118: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/}; 119: my $real_test = 120: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/}; 121: my $pos_real_test = 122: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/}; 123: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/}; 124: my $onoff_test = sub {$_[0]=~/^(on|off)$/}; 125: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/}; 126: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/}; 127: my $linestyle_test = sub {exists($linestyles{$_[0]})}; 128: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/}; 129: 130: ################################################################### 131: ## ## 132: ## Attribute metadata ## 133: ## ## 134: ################################################################### 135: my @gnuplot_edit_order = 136: qw/alttag bgcolor fgcolor height width texwidth fontface font texfont 137: transparent grid samples 138: border align plotcolor plottype gridtype lmargin rmargin 139: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle 140: pattern solid/; 141: 142: my $margin_choices = ['default',0..20]; 143: 144: my %gnuplot_defaults = 145: ( 146: alttag => { 147: default => 'dynamically generated plot', 148: test => $words_test, 149: description => 'Brief description of the plot', 150: edit_type => 'entry', 151: size => '40' 152: }, 153: height => { 154: default => 300, 155: test => $int_test, 156: description => 'Height of image (pixels)', 157: edit_type => 'entry', 158: size => '10' 159: }, 160: width => { 161: default => 400, 162: test => $int_test, 163: description => 'Width of image (pixels)', 164: edit_type => 'entry', 165: size => '10' 166: }, 167: bgcolor => { 168: default => 'xffffff', 169: test => $color_test, 170: description => 'Background color of image (xffffff)', 171: edit_type => 'entry', 172: size => '10' 173: }, 174: fgcolor => { 175: default => 'x000000', 176: test => $color_test, 177: description => 'Foreground color of image (x000000)', 178: edit_type => 'entry', 179: size => '10' 180: }, 181: transparent => { 182: default => 'off', 183: test => $onoff_test, 184: description => 'Transparent image', 185: edit_type => 'onoff' 186: }, 187: grid => { 188: default => 'on', 189: test => $onoff_test, 190: description => 'Display grid', 191: edit_type => 'onoff' 192: }, 193: gridlayer => { 194: default => 'off', 195: test => $onoff_test, 196: description => 'Display grid front layer over filled boxes or filled curves', 197: edit_type => 'onoff' 198: }, 199: box_border => { 200: default => 'noborder', 201: test => sub {$_[0]=~/^(noborder|border)$/}, 202: description => 'Draw border for boxes', 203: edit_type => 'choice', 204: choices => ['border','noborder'] 205: }, 206: border => { 207: default => 'on', 208: test => $onoff_test, 209: description => 'Draw border around plot', 210: edit_type => 'onoff' 211: }, 212: font => { 213: default => '9', 214: test => $sml_test, 215: description => 'Font size to use in web output (pts)', 216: edit_type => 'choice', 217: choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15'] 218: }, 219: fontface => { 220: default => 'sans-serif', 221: test => sub {$_[0]=~/^(sans-serif|serif|classic)$/}, 222: description => 'Type of font to use', 223: edit_type => 'choice', 224: choices => ['sans-serif','serif', 'classic'] 225: }, 226: samples => { 227: default => '100', 228: test => $int_test, 229: description => 'Number of samples for non-data plots', 230: edit_type => 'choice', 231: choices => ['100','200','500','1000','2000','5000'] 232: }, 233: align => { 234: default => 'middle', 235: test => sub {$_[0]=~/^(left|right|middle|center)$/}, 236: description => 'Alignment for image in HTML', 237: edit_type => 'choice', 238: choices => ['left','right','middle'] 239: }, 240: texwidth => { 241: default => '93', 242: test => $int_test, 243: description => 'Width of plot when printed (mm)', 244: edit_type => 'entry', 245: size => '5' 246: }, 247: texfont => { 248: default => '22', 249: test => $int_test, 250: description => 'Font size to use in TeX output (pts):', 251: edit_type => 'choice', 252: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/], 253: }, 254: plotcolor => { 255: default => 'monochrome', 256: test => sub {$_[0]=~/^(monochrome|color|colour)$/}, 257: description => 'Color setting for printing:', 258: edit_type => 'choice', 259: choices => [qw/monochrome color colour/], 260: }, 261: pattern => { 262: default => '', 263: test => $int_test, 264: description => 'Pattern value for boxes:', 265: edit_type => 'choice', 266: choices => [0,1,2,3,4,5,6] 267: }, 268: solid => { 269: default => 0, 270: test => $real_test, 271: description => 'The density of fill style for boxes', 272: edit_type => 'entry', 273: size => '5' 274: }, 275: fillstyle => { 276: default => 'empty', 277: test => sub {$_[0]=~/^(empty|solid|pattern)$/}, 278: description => 'Filled style for boxes:', 279: edit_type => 'choice', 280: choices => ['empty','solid','pattern'] 281: }, 282: plottype => { 283: default => 'Cartesian', 284: test => sub {$_[0]=~/^(Polar|Cartesian)$/}, 285: description => 'Plot type:', 286: edit_type => 'choice', 287: choices => ['Cartesian','Polar'] 288: }, 289: gridtype => { 290: default => 'Cartesian', 291: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/}, 292: description => 'Grid type:', 293: edit_type => 'choice', 294: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log'] 295: }, 296: lmargin => { 297: default => 'default', 298: test => sub {$_[0]=~/^(default|\d+)$/}, 299: description => 'Left margin width (pts):', 300: edit_type => 'choice', 301: choices => $margin_choices, 302: }, 303: rmargin => { 304: default => 'default', 305: test => sub {$_[0]=~/^(default|\d+)$/}, 306: description => 'Right margin width (pts):', 307: edit_type => 'choice', 308: choices => $margin_choices, 309: }, 310: tmargin => { 311: default => 'default', 312: test => sub {$_[0]=~/^(default|\d+)$/}, 313: description => 'Top margin width (pts):', 314: edit_type => 'choice', 315: choices => $margin_choices, 316: }, 317: bmargin => { 318: default => 'default', 319: test => sub {$_[0]=~/^(default|\d+)$/}, 320: description => 'Bottom margin width (pts):', 321: edit_type => 'choice', 322: choices => $margin_choices, 323: }, 324: boxwidth => { 325: default => '', 326: test => $real_test, 327: description => 'Width of boxes, default is auto', 328: edit_type => 'entry', 329: size => '5' 330: }, 331: major_ticscale => { 332: default => '1', 333: test => $real_test, 334: description => 'Size of major tic marks (plot coordinates)', 335: edit_type => 'entry', 336: size => '5' 337: }, 338: minor_ticscale => { 339: default => '0.5', 340: test => $real_test, 341: description => 'Size of minor tic mark (plot coordinates)', 342: edit_type => 'entry', 343: size => '5' 344: }, 345: ); 346: 347: my %key_defaults = 348: ( 349: title => { 350: default => '', 351: test => $words_test, 352: description => 'Title of key', 353: edit_type => 'entry', 354: size => '40' 355: }, 356: box => { 357: default => 'off', 358: test => $onoff_test, 359: description => 'Draw a box around the key?', 360: edit_type => 'onoff' 361: }, 362: pos => { 363: default => 'top right', 364: test => $key_pos_test, 365: description => 'Position of the key on the plot', 366: edit_type => 'choice', 367: choices => ['top left','top right','bottom left','bottom right', 368: 'outside','below'] 369: } 370: ); 371: 372: my %label_defaults = 373: ( 374: xpos => { 375: default => 0, 376: test => $real_test, 377: description => 'X position of label (graph coordinates)', 378: edit_type => 'entry', 379: size => '10' 380: }, 381: ypos => { 382: default => 0, 383: test => $real_test, 384: description => 'Y position of label (graph coordinates)', 385: edit_type => 'entry', 386: size => '10' 387: }, 388: justify => { 389: default => 'left', 390: test => sub {$_[0]=~/^(left|right|center)$/}, 391: description => 'justification of the label text on the plot', 392: edit_type => 'choice', 393: choices => ['left','right','center'] 394: }, 395: rotate => { 396: default => 0, 397: test => $real_test, 398: description => 'Rotation of label (degrees)', 399: edit_type => 'entry', 400: size => '10', 401: } 402: ); 403: 404: my @tic_edit_order = ('location','mirror','start','increment','end', 405: 'minorfreq'); 406: my %tic_defaults = 407: ( 408: location => { 409: default => 'border', 410: test => sub {$_[0]=~/^(border|axis)$/}, 411: description => 'Location of major tic marks', 412: edit_type => 'choice', 413: choices => ['border','axis'] 414: }, 415: mirror => { 416: default => 'on', 417: test => $onoff_test, 418: description => 'Mirror tics on opposite axis?', 419: edit_type => 'onoff' 420: }, 421: start => { 422: default => '-10.0', 423: test => $real_test, 424: description => 'Start major tics at', 425: edit_type => 'entry', 426: size => '10' 427: }, 428: increment => { 429: default => '1.0', 430: test => $real_test, 431: description => 'Place a major tic every', 432: edit_type => 'entry', 433: size => '10' 434: }, 435: end => { 436: default => ' 10.0', 437: test => $real_test, 438: description => 'Stop major tics at ', 439: edit_type => 'entry', 440: size => '10' 441: }, 442: minorfreq => { 443: default => '0', 444: test => $int_test, 445: description => 'Number of minor tics per major tic mark', 446: edit_type => 'entry', 447: size => '10' 448: }, 449: ); 450: 451: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat'); 452: my %axis_defaults = 453: ( 454: color => { 455: default => 'x000000', 456: test => $color_test, 457: description => 'Color of grid lines (x000000)', 458: edit_type => 'entry', 459: size => '10' 460: }, 461: xmin => { 462: default => '-10.0', 463: test => $real_test, 464: description => 'Minimum x-value shown in plot', 465: edit_type => 'entry', 466: size => '10' 467: }, 468: xmax => { 469: default => ' 10.0', 470: test => $real_test, 471: description => 'Maximum x-value shown in plot', 472: edit_type => 'entry', 473: size => '10' 474: }, 475: ymin => { 476: default => '-10.0', 477: test => $real_test, 478: description => 'Minimum y-value shown in plot', 479: edit_type => 'entry', 480: size => '10' 481: }, 482: ymax => { 483: default => ' 10.0', 484: test => $real_test, 485: description => 'Maximum y-value shown in plot', 486: edit_type => 'entry', 487: size => '10' 488: }, 489: xformat => { 490: default => 'on', 491: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/}, 492: description => 'X-axis number formatting', 493: edit_type => 'choice', 494: choices => ['on', 'off', '2e', '2f'], 495: }, 496: yformat => { 497: default => 'on', 498: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/}, 499: description => 'X-axis number formatting', 500: edit_type => 'choice', 501: choices => ['on', 'off', '2e', '2f'], 502: }, 503: 504: ); 505: 506: my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit'); 507: 508: my %curve_defaults = 509: ( 510: color => { 511: default => 'x000000', 512: test => $color_test, 513: description => 'Color of curve (x000000)', 514: edit_type => 'entry', 515: size => '10' 516: }, 517: name => { 518: default => '', 519: test => $words_test, 520: description => 'Name of curve to appear in key', 521: edit_type => 'entry', 522: size => '20' 523: }, 524: linestyle => { 525: default => 'lines', 526: test => $linestyle_test, 527: description => 'Plot with:', 528: edit_type => 'choice', 529: choices => [keys(%linestyles)] 530: }, 531: linewidth => { 532: default => 1, 533: test => $int_test, 534: description => 'Line width (may not apply to all plot styles)', 535: edit_type => 'choice', 536: choices => [1,2,3,4,5,6,7,8,9,10] 537: }, 538: linetype => { 539: default => 'solid', 540: test => sub {$_[0]=~/^(solid|dashed)$/}, 541: description => 'Line type (may not apply to all plot styles)', 542: edit_type => 'choice', 543: choices => ['solid', 'dashed'] 544: }, 545: pointsize => { 546: default => 1, 547: test => $pos_real_test, 548: description => 'Point size (may not apply to all plot styles)', 549: edit_type => 'entry', 550: size => '5' 551: }, 552: pointtype => { 553: default => 1, 554: test => $int_test, 555: description => 'Point type (may not apply to all plot styles)', 556: edit_type => 'choice', 557: choices => [0,1,2,3,4,5,6] 558: }, 559: limit => { 560: default => 'closed', 561: test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/}, 562: description => 'Point to fill -- for filledcurves', 563: edit_type => 'choice', 564: choices => ['above', 'below', 'closed','x1','x2','y1','y2'] 565: }, 566: ); 567: 568: ################################################################### 569: ## ## 570: ## parsing and edit rendering ## 571: ## ## 572: ################################################################### 573: 574: undef %Apache::lonplot::plot; 575: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics); 576: 577: sub start_gnuplot { 578: undef(%Apache::lonplot::plot); undef(%key); undef(%axis); 579: undef($title); undef($xlabel); undef($ylabel); 580: undef(@labels); undef(@curves); 581: undef(%xtics); undef(%ytics); 582: # 583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 584: my $result=''; 585: &Apache::lonxml::register('Apache::lonplot', 586: ('title','xlabel','ylabel','key','axis','label','curve', 587: 'xtics','ytics')); 588: push (@Apache::lonxml::namespace,'lonplot'); 589: if ($target eq 'web' || $target eq 'tex') { 590: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval, 591: $tagstack->[-1]); 592: } elsif ($target eq 'edit') { 593: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot'); 594: $result .= &edit_attributes($target,$token,\%gnuplot_defaults, 595: \@gnuplot_edit_order) 596: .&Apache::edit::end_row() 597: .&Apache::edit::start_spanning_row(); 598: } elsif ($target eq 'modified') { 599: my $constructtag=&Apache::edit::get_new_args 600: ($token,$parstack,$safeeval,keys(%gnuplot_defaults)); 601: if ($constructtag) { 602: $result = &Apache::edit::rebuild_tag($token); 603: } 604: } 605: return $result; 606: } 607: 608: sub end_gnuplot { 609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 610: pop @Apache::lonxml::namespace; 611: &Apache::lonxml::deregister('Apache::lonplot', 612: ('title','xlabel','ylabel','key','axis','label','curve')); 613: my $result = ''; 614: my $randnumber; 615: # need to call rand everytime start_script would evaluate, as the 616: # safe space rand number generator and the global rand generator 617: # are not separate 618: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || 619: $target eq 'answer') { 620: $randnumber=int(rand(1000)); 621: } 622: if ($target eq 'web' || $target eq 'tex') { 623: &check_inputs(); # Make sure we have all the data we need 624: ## 625: ## Determine filename 626: my $tmpdir = '/home/httpd/perl/tmp/'; 627: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}. 628: '_'.time.'_'.$$.$randnumber.'_plot'; 629: ## Write the plot description to the file 630: &write_gnuplot_file($tmpdir,$filename,$target); 631: $filename = &escape($filename); 632: ## return image tag for the plot 633: if ($target eq 'web') { 634: $result .= <<"ENDIMAGE"; 635: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data" 636: width = "$Apache::lonplot::plot{'width'}" 637: height = "$Apache::lonplot::plot{'height'}" 638: align = "$Apache::lonplot::plot{'align'}" 639: alt = "$Apache::lonplot::plot{'alttag'}" /> 640: ENDIMAGE 641: } elsif ($target eq 'tex') { 642: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}"); 643: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}"); 644: #might be inside the safe space, register the URL for later 645: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps"); 646: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n"; 647: $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n"; 648: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}'; 649: } 650: } elsif ($target eq 'edit') { 651: $result.=&Apache::edit::tag_end($target,$token); 652: } 653: return $result; 654: } 655: 656: 657: ##--------------------------------------------------------------- xtics 658: sub start_xtics { 659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 660: my $result=''; 661: if ($target eq 'web' || $target eq 'tex') { 662: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval, 663: $tagstack->[-1]); 664: } elsif ($target eq 'edit') { 665: $result .= &Apache::edit::tag_start($target,$token,'xtics'); 666: $result .= &edit_attributes($target,$token,\%tic_defaults, 667: \@tic_edit_order); 668: } elsif ($target eq 'modified') { 669: my $constructtag=&Apache::edit::get_new_args 670: ($token,$parstack,$safeeval,keys(%tic_defaults)); 671: if ($constructtag) { 672: $result = &Apache::edit::rebuild_tag($token); 673: } 674: } 675: return $result; 676: } 677: 678: sub end_xtics { 679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 680: my $result = ''; 681: if ($target eq 'web' || $target eq 'tex') { 682: } elsif ($target eq 'edit') { 683: $result.=&Apache::edit::tag_end($target,$token); 684: } 685: return $result; 686: } 687: 688: ##--------------------------------------------------------------- ytics 689: sub start_ytics { 690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 691: my $result=''; 692: if ($target eq 'web' || $target eq 'tex') { 693: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval, 694: $tagstack->[-1]); 695: } elsif ($target eq 'edit') { 696: $result .= &Apache::edit::tag_start($target,$token,'ytics'); 697: $result .= &edit_attributes($target,$token,\%tic_defaults, 698: \@tic_edit_order); 699: } elsif ($target eq 'modified') { 700: my $constructtag=&Apache::edit::get_new_args 701: ($token,$parstack,$safeeval,keys(%tic_defaults)); 702: if ($constructtag) { 703: $result = &Apache::edit::rebuild_tag($token); 704: } 705: } 706: return $result; 707: } 708: 709: sub end_ytics { 710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 711: my $result = ''; 712: if ($target eq 'web' || $target eq 'tex') { 713: } elsif ($target eq 'edit') { 714: $result.=&Apache::edit::tag_end($target,$token); 715: } 716: return $result; 717: } 718: 719: ##-----------------------------------------------------------------font 720: my %font_properties = 721: ( 722: 'classic' => { 723: face => 'classic', 724: file => 'DejaVuSansMono-Bold', 725: printname => 'Helvetica', 726: tex_no_file => 1, 727: }, 728: 'sans-serif' => { 729: face => 'sans-serif', 730: file => 'DejaVuSans', 731: printname => 'DejaVuSans', 732: }, 733: 'serif' => { 734: face => 'serif', 735: file => 'DejaVuSerif', 736: printname => 'DejaVuSerif', 737: }, 738: ); 739: 740: sub get_font { 741: my ($target) = @_; 742: my ($size, $selected_font); 743: 744: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) { 745: $selected_font = $font_properties{'classic'}; 746: if ( $Apache::lonplot::plot{'font'} eq 'small') { 747: $size = '5'; 748: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') { 749: $size = '9'; 750: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') { 751: $size = '11'; 752: } else { 753: $size = '9'; 754: } 755: } else { 756: $size = $Apache::lonplot::plot{'font'}; 757: $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}}; 758: } 759: if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) { 760: # $selected_font = $font_properties{'classic'}; 761: $size = $Apache::lonplot::plot{'texfont'}; 762: } 763: return ($size, $selected_font); 764: } 765: 766: ##----------------------------------------------------------------- key 767: sub start_key { 768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 769: my $result=''; 770: if ($target eq 'web' || $target eq 'tex') { 771: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval, 772: $tagstack->[-1]); 773: } elsif ($target eq 'edit') { 774: $result .= &Apache::edit::tag_start($target,$token,'Plot Key'); 775: $result .= &edit_attributes($target,$token,\%key_defaults); 776: } elsif ($target eq 'modified') { 777: my $constructtag=&Apache::edit::get_new_args 778: ($token,$parstack,$safeeval,keys(%key_defaults)); 779: if ($constructtag) { 780: $result = &Apache::edit::rebuild_tag($token); 781: } 782: } 783: return $result; 784: } 785: 786: sub end_key { 787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 788: my $result = ''; 789: if ($target eq 'web' || $target eq 'tex') { 790: } elsif ($target eq 'edit') { 791: $result.=&Apache::edit::tag_end($target,$token); 792: } 793: return $result; 794: } 795: 796: sub parse_label { 797: my ($target,$text) = @_; 798: my $parser=HTML::LCParser->new(\$text); 799: my $result; 800: while (my $token=$parser->get_token) { 801: if ($token->[0] eq 'S') { 802: if ($token->[1] eq 'sub') { 803: $result .= '_{'; 804: } elsif ($token->[1] eq 'sup') { 805: $result .= '^{'; 806: } else { 807: $result .= $token->[4]; 808: } 809: } elsif ($token->[0] eq 'E') { 810: if ($token->[1] eq 'sub' 811: || $token->[1] eq 'sup') { 812: $result .= '}'; 813: } else { 814: $result .= $token->[2]; 815: } 816: } elsif ($token->[0] eq 'T') { 817: $result .= &replace_entities($target,$token->[1]); 818: } 819: } 820: return $result; 821: } 822: 823: # 824: # Note that there are severe restrictions on font selection in the 825: # ps driver now. later in life Gnuplot is supposed to support 826: # utf-8 fonts in the posts script driver. When this happens, 827: # the tex entries with comments that include the word <FIX> 828: # should be changed to print the correct glyphs rather than some 829: # approximation or fallback of what is intended. 830: 831: my %lookup = 832: ( # Greek alphabet: 833: 834: '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"}, 835: '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"}, 836: '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"}, 837: '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"}, 838: '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"}, 839: '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"}, 840: '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"}, 841: '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"}, 842: '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"}, 843: '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"}, 844: '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"}, 845: '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"}, 846: '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"}, 847: '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"}, 848: '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"}, 849: '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"}, 850: '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"}, 851: '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"}, 852: '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"}, 853: '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"}, 854: '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"}, 855: '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"}, 856: '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"}, 857: '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"}, 858: '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"}, 859: '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"}, 860: '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"}, 861: '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"}, 862: '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"}, 863: '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"}, 864: '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"}, 865: '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"}, 866: '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"}, 867: '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"}, 868: '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"}, 869: '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"}, 870: '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"}, 871: '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"}, 872: '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"}, 873: '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"}, 874: '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"}, 875: '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"}, 876: '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"}, 877: '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"}, 878: '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"}, 879: '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"}, 880: '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"}, 881: '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"}, 882: '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"}, 883: '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"}, 884: '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"}, 885: 886: 887: # Punctuation: 888: 889: '(quot|#034)' => {'tex' => '\42', 'web' => '\42'}, 890: '(amp|#038)' => {'tex' => '\46', 'web' => '\46'}, 891: '(lt|#060)' => {'tex' => '\74', 'web' => '\74'}, 892: '(gt|#062)' => {'tex' => '\76', 'web' => '\76'}, 893: '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"}, 894: '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"}, 895: '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"}, 896: '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"}, 897: '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"}, 898: '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'}, 899: '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX> 900: '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX> 901: '#139' => {'tex' => '<', 'web' => '<'}, 902: '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX> 903: '#145' => {'tex' => '\140', 'web' => "\x{2018}"}, 904: '#146' => {'tex' => '\47', 'web' => "\x{2019}"}, 905: '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX> 906: '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX> 907: '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"}, 908: '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash 909: '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash 910: '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'}, 911: '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark 912: 913: # Accented letters, and other furreign language glyphs. 914: 915: '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps. 916: '#155' => {'tex' => '>', 'web' => '\76'}, # > 917: '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX> 918: '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX> 919: '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space. 920: '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted ! 921: '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency. 922: '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency. 923: '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX> 924: '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency. 925: '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print. 926: '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol. 927: '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut. 928: '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol. 929: '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal. 930: '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes. 931: '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not. 932: '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen. 933: '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm. 934: '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar). 935: '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..` 936: '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol. 937: '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2. 938: '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3. 939: '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent. 940: '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu). 941: '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol. 942: '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot 943: '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla. 944: '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1. 945: '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal. 946: '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes. 947: '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4. 948: '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2. 949: '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4 950: '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ? 951: '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave. 952: '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute. 953: '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex. 954: '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde. 955: '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut. 956: '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring. 957: '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature. 958: '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla 959: '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave. 960: '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent. 961: '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex. 962: '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut. 963: '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent. 964: '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent. 965: '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex. 966: '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut. 967: '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth. 968: '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan). 969: '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave. 970: '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute. 971: '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex. 972: '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde. 973: '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut. 974: '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol. 975: '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash. 976: '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave. 977: '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute. 978: '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex. 979: '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut. 980: '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute. 981: '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn. 982: '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s. 983: '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave. 984: '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave. 985: '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex. 986: '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde. 987: '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut 988: '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top. 989: '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature. 990: '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla 991: '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave. 992: '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute. 993: '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex. 994: '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut. 995: '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave. 996: '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute. 997: '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex. 998: '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut. 999: '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth. 1000: '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde. 1001: '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave. 1002: '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute. 1003: '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex. 1004: '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde. 1005: '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut. 1006: '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol 1007: '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed. 1008: '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave. 1009: '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute. 1010: '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex. 1011: '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut. 1012: '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent. 1013: '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic). 1014: '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut. 1015: 1016: # Latin extended A entities: 1017: 1018: '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature. 1019: '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature. 1020: '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable. 1021: '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable. 1022: '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable. 1023: 1024: # Latin extended B. 1025: 1026: '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook. 1027: 1028: # Standalone accents: 1029: 1030: '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex. 1031: '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde. 1032: 1033: # General punctuation. We're not able to make a distinction between 1034: # the various length spacings in the print version. (e.g. en/em/thin). 1035: # the various joiners will be empty strings in the print version too. 1036: 1037: 1038: '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space. 1039: '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space. 1040: '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space. 1041: '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner. 1042: '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner. 1043: '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark 1044: '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark. 1045: '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash. 1046: '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash. 1047: '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote. 1048: '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote. 1049: '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote. 1050: '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote. 1051: '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote. 1052: '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote. 1053: '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now? 1054: '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart? 1055: '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet. 1056: '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses. 1057: '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille. 1058: '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime. 1059: '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime. 1060: '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote. 1061: '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote. 1062: '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline. 1063: '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash. 1064: '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency. 1065: 1066: # Letter like symbols. 1067: 1068: '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol 1069: '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part 1070: '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part. 1071: '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol. 1072: '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef. 1073: 1074: # Arrows of various types and directions. 1075: '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <-- 1076: '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow. 1077: '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # --> 1078: '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow. 1079: '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <--> 1080: '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right. 1081: '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <== 1082: '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow. 1083: '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==> 1084: '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow. 1085: '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==> 1086: 1087: # Mathematical operators. For some of these we do the best we can in printing. 1088: 1089: '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all. 1090: '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative 1091: '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists. 1092: '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set. 1093: '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g. 1094: '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set. 1095: '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of 1096: '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member 1097: '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product 1098: '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of. 1099: '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign. 1100: '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # * 1101: '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root. 1102: '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to. 1103: '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity. 1104: '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle . 1105: '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and. 1106: '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or. 1107: '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection. 1108: '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union. 1109: '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral. 1110: 1111: # Some gnuplot guru will have to explain to me why the next three 1112: # require the extra slashes... else they print very funkily. 1113: 1114: '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots. 1115: '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to. 1116: '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with. 1117: 1118: '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to. 1119: '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to. 1120: '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to. 1121: '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to. 1122: '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to 1123: '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of. 1124: '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of. 1125: '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of. 1126: '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal. 1127: '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal 1128: '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside 1129: '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times. 1130: '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular. 1131: '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator. 1132: 1133: # Misc. technical symbols: 1134: 1135: '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling. 1136: '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling. 1137: '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor. 1138: '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor. 1139: 1140: # The gnuplot png font evidently does not have the big angle brackets at 1141: # positions 0x2329, 0x232a so use ordinary brackets. 1142: 1143: '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket. 1144: '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket. 1145: 1146: # Gemoetric shapes. 1147: 1148: '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge. 1149: 1150: # Misc. symbols 1151: 1152: '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"}, 1153: '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"}, 1154: '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"}, 1155: '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"} 1156: 1157: ); 1158: 1159: 1160: sub replace_entities { 1161: my ($target,$text) = @_; 1162: $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g; 1163: while (my ($re, $replace) = each(%lookup)) { 1164: my $repl = $replace->{$target}; 1165: $text =~ s/&$re;/$replace->{$target}/g; 1166: } 1167: $text =~ s{(&)}{\\\\$1}g; 1168: return $text; 1169: } 1170: 1171: ##------------------------------------------------------------------- title 1172: sub start_title { 1173: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1174: my $result=''; 1175: if ($target eq 'web' || $target eq 'tex') { 1176: $title = &Apache::lonxml::get_all_text("/title",$parser,$style); 1177: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]); 1178: $title =~ s/\n/ /g; 1179: if (length($title) > $max_str_len) { 1180: $title = substr($title,0,$max_str_len); 1181: } 1182: $title = &parse_label($target,$title); 1183: } elsif ($target eq 'edit') { 1184: $result.=&Apache::edit::tag_start($target,$token,'Plot Title'); 1185: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style); 1186: $result.=&Apache::edit::editline('',$text,'',60); 1187: } elsif ($target eq 'modified') { 1188: $result.=&Apache::edit::rebuild_tag($token); 1189: $result.=&Apache::edit::modifiedfield("/title",$parser); 1190: } 1191: return $result; 1192: } 1193: 1194: sub end_title { 1195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1196: my $result = ''; 1197: if ($target eq 'web' || $target eq 'tex') { 1198: } elsif ($target eq 'edit') { 1199: $result.=&Apache::edit::tag_end($target,$token); 1200: } 1201: return $result; 1202: } 1203: ##------------------------------------------------------------------- xlabel 1204: sub start_xlabel { 1205: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1206: my $result=''; 1207: if ($target eq 'web' || $target eq 'tex') { 1208: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style); 1209: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]); 1210: $xlabel =~ s/\n/ /g; 1211: if (length($xlabel) > $max_str_len) { 1212: $xlabel = substr($xlabel,0,$max_str_len); 1213: } 1214: $xlabel = &parse_label($target,$xlabel); 1215: } elsif ($target eq 'edit') { 1216: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel'); 1217: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style); 1218: $result.=&Apache::edit::editline('',$text,'',60); 1219: } elsif ($target eq 'modified') { 1220: $result.=&Apache::edit::rebuild_tag($token); 1221: $result.=&Apache::edit::modifiedfield("/xlabel",$parser); 1222: } 1223: return $result; 1224: } 1225: 1226: sub end_xlabel { 1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1228: my $result = ''; 1229: if ($target eq 'web' || $target eq 'tex') { 1230: } elsif ($target eq 'edit') { 1231: $result.=&Apache::edit::tag_end($target,$token); 1232: } 1233: return $result; 1234: } 1235: 1236: ##------------------------------------------------------------------- ylabel 1237: sub start_ylabel { 1238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1239: my $result=''; 1240: if ($target eq 'web' || $target eq 'tex') { 1241: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style); 1242: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]); 1243: $ylabel =~ s/\n/ /g; 1244: if (length($ylabel) > $max_str_len) { 1245: $ylabel = substr($ylabel,0,$max_str_len); 1246: } 1247: $ylabel = &parse_label($target,$ylabel); 1248: } elsif ($target eq 'edit') { 1249: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel'); 1250: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style); 1251: $result .= &Apache::edit::editline('',$text,'',60); 1252: } elsif ($target eq 'modified') { 1253: $result.=&Apache::edit::rebuild_tag($token); 1254: $result.=&Apache::edit::modifiedfield("/ylabel",$parser); 1255: } 1256: return $result; 1257: } 1258: 1259: sub end_ylabel { 1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1261: my $result = ''; 1262: if ($target eq 'web' || $target eq 'tex') { 1263: } elsif ($target eq 'edit') { 1264: $result.=&Apache::edit::tag_end($target,$token); 1265: } 1266: return $result; 1267: } 1268: 1269: ##------------------------------------------------------------------- label 1270: sub start_label { 1271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1272: my $result=''; 1273: if ($target eq 'web' || $target eq 'tex') { 1274: my %label; 1275: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval, 1276: $tagstack->[-1]); 1277: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style); 1278: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]); 1279: $text =~ s/\n/ /g; 1280: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len); 1281: $label{'text'} = &parse_label($target,$text); 1282: push(@labels,\%label); 1283: } elsif ($target eq 'edit') { 1284: $result .= &Apache::edit::tag_start($target,$token,'Plot Label'); 1285: $result .= &edit_attributes($target,$token,\%label_defaults); 1286: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style); 1287: $result .= &Apache::edit::end_row(). 1288: &Apache::edit::start_spanning_row(). 1289: &Apache::edit::editline('',$text,'',60); 1290: } elsif ($target eq 'modified') { 1291: &Apache::edit::get_new_args 1292: ($token,$parstack,$safeeval,keys(%label_defaults)); 1293: $result.=&Apache::edit::rebuild_tag($token); 1294: $result.=&Apache::edit::modifiedfield("/label",$parser); 1295: } 1296: return $result; 1297: } 1298: 1299: sub end_label { 1300: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1301: my $result = ''; 1302: if ($target eq 'web' || $target eq 'tex') { 1303: } elsif ($target eq 'edit') { 1304: $result.=&Apache::edit::tag_end($target,$token); 1305: } 1306: return $result; 1307: } 1308: 1309: ##------------------------------------------------------------------- curve 1310: sub start_curve { 1311: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1312: my $result=''; 1313: &Apache::lonxml::register('Apache::lonplot',('function','data')); 1314: push (@Apache::lonxml::namespace,'curve'); 1315: if ($target eq 'web' || $target eq 'tex') { 1316: my %curve; 1317: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval, 1318: $tagstack->[-1]); 1319: push (@curves,\%curve); 1320: } elsif ($target eq 'edit') { 1321: $result .= &Apache::edit::tag_start($target,$token,'Curve'); 1322: $result .= &edit_attributes($target,$token,\%curve_defaults, 1323: \@curve_edit_order) 1324: .&Apache::edit::end_row() 1325: .&Apache::edit::start_spanning_row(); 1326: 1327: } elsif ($target eq 'modified') { 1328: my $constructtag=&Apache::edit::get_new_args 1329: ($token,$parstack,$safeeval,keys(%curve_defaults)); 1330: if ($constructtag) { 1331: $result = &Apache::edit::rebuild_tag($token); 1332: } 1333: } 1334: return $result; 1335: } 1336: 1337: sub end_curve { 1338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1339: my $result = ''; 1340: pop @Apache::lonxml::namespace; 1341: &Apache::lonxml::deregister('Apache::lonplot',('function','data')); 1342: if ($target eq 'web' || $target eq 'tex') { 1343: } elsif ($target eq 'edit') { 1344: $result.=&Apache::edit::tag_end($target,$token); 1345: } 1346: return $result; 1347: } 1348: 1349: ##------------------------------------------------------------ curve function 1350: sub start_function { 1351: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1352: my $result=''; 1353: if ($target eq 'web' || $target eq 'tex') { 1354: if (exists($curves[-1]->{'data'})) { 1355: &Apache::lonxml::warning 1356: ('Use of the curve function tag precludes use of '. 1357: ' the curve data tag. '. 1358: 'The curve data tag will be omitted in favor of the '. 1359: 'curve function declaration.'); 1360: delete $curves[-1]->{'data'} ; 1361: } 1362: my $function = &Apache::lonxml::get_all_text("/function",$parser, 1363: $style); 1364: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]); 1365: $curves[-1]->{'function'} = $function; 1366: } elsif ($target eq 'edit') { 1367: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function'); 1368: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style); 1369: $result .= &Apache::edit::editline('',$text,'',60); 1370: } elsif ($target eq 'modified') { 1371: $result.=&Apache::edit::rebuild_tag($token); 1372: $result.=&Apache::edit::modifiedfield("/function",$parser); 1373: } 1374: return $result; 1375: } 1376: 1377: sub end_function { 1378: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1379: my $result = ''; 1380: if ($target eq 'web' || $target eq 'tex') { 1381: } elsif ($target eq 'edit') { 1382: $result .= &Apache::edit::end_table(); 1383: } 1384: return $result; 1385: } 1386: 1387: ##------------------------------------------------------------ curve data 1388: sub start_data { 1389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1390: my $result=''; 1391: if ($target eq 'web' || $target eq 'tex') { 1392: if (exists($curves[-1]->{'function'})) { 1393: &Apache::lonxml::warning 1394: ('Use of the curve function tag precludes use of '. 1395: ' the curve data tag. '. 1396: 'The curve function tag will be omitted in favor of the '. 1397: 'curve data declaration.'); 1398: delete($curves[-1]->{'function'}); 1399: } 1400: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style); 1401: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]); 1402: # Deal with cases where we're given an array... 1403: if ($datatext =~ /^\@/) { 1404: $datatext = &Apache::run::run('return "'.$datatext.'"', 1405: $safeeval,1); 1406: } 1407: $datatext =~ s/\s+/ /g; 1408: # Need to do some error checking on the @data array - 1409: # make sure it's all numbers and make sure each array 1410: # is of the same length. 1411: my @data; 1412: if ($datatext =~ /,/) { # comma deliminated 1413: @data = split /,/,$datatext; 1414: } else { # Assume it's space separated. 1415: @data = split / /,$datatext; 1416: } 1417: for (my $i=0;$i<=$#data;$i++) { 1418: # Check that it's non-empty 1419: if (! defined($data[$i])) { 1420: &Apache::lonxml::warning( 1421: 'undefined curve data value. Replacing with '. 1422: ' pi/e = 1.15572734979092'); 1423: $data[$i] = 1.15572734979092; 1424: } 1425: # Check that it's a number 1426: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) { 1427: &Apache::lonxml::warning( 1428: 'Bad curve data value of '.$data[$i].' Replacing with '. 1429: ' pi/e = 1.15572734979092'); 1430: $data[$i] = 1.15572734979092; 1431: } 1432: } 1433: # complain if the number of data points is not the same as 1434: # in previous sets of data. 1435: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){ 1436: &Apache::lonxml::warning 1437: ('Number of data points is not consistent with previous '. 1438: 'number of data points'); 1439: } 1440: push @{$curves[-1]->{'data'}},\@data; 1441: } elsif ($target eq 'edit') { 1442: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data'); 1443: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style); 1444: $result .= &Apache::edit::editline('',$text,'',60); 1445: } elsif ($target eq 'modified') { 1446: $result.=&Apache::edit::rebuild_tag($token); 1447: $result.=&Apache::edit::modifiedfield("/data",$parser); 1448: } 1449: return $result; 1450: } 1451: 1452: sub end_data { 1453: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1454: my $result = ''; 1455: if ($target eq 'web' || $target eq 'tex') { 1456: } elsif ($target eq 'edit') { 1457: $result .= &Apache::edit::end_table(); 1458: } 1459: return $result; 1460: } 1461: 1462: ##------------------------------------------------------------------- axis 1463: sub start_axis { 1464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1465: my $result=''; 1466: if ($target eq 'web' || $target eq 'tex') { 1467: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval, 1468: $tagstack->[-1]); 1469: } elsif ($target eq 'edit') { 1470: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes'); 1471: $result .= &edit_attributes($target,$token,\%axis_defaults, 1472: \@axis_edit_order); 1473: } elsif ($target eq 'modified') { 1474: my $constructtag=&Apache::edit::get_new_args 1475: ($token,$parstack,$safeeval,keys(%axis_defaults)); 1476: if ($constructtag) { 1477: $result = &Apache::edit::rebuild_tag($token); 1478: } 1479: } 1480: return $result; 1481: } 1482: 1483: sub end_axis { 1484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 1485: my $result = ''; 1486: if ($target eq 'web' || $target eq 'tex') { 1487: } elsif ($target eq 'edit') { 1488: $result.=&Apache::edit::tag_end($target,$token); 1489: } elsif ($target eq 'modified') { 1490: } 1491: return $result; 1492: } 1493: 1494: ################################################################### 1495: ## ## 1496: ## Utility Functions ## 1497: ## ## 1498: ################################################################### 1499: 1500: ##----------------------------------------------------------- set_defaults 1501: sub set_defaults { 1502: my ($var,$defaults) = @_; 1503: my $key; 1504: foreach $key (keys(%$defaults)) { 1505: $var->{$key} = $defaults->{$key}->{'default'}; 1506: } 1507: } 1508: 1509: ##------------------------------------------------------------------- misc 1510: sub get_attributes{ 1511: my ($values,$defaults,$parstack,$safeeval,$tag) = @_; 1512: foreach my $attr (keys(%{$defaults})) { 1513: if ($attr eq 'texwidth' || $attr eq 'texfont') { 1514: $values->{$attr} = 1515: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1); 1516: } else { 1517: $values->{$attr} = 1518: &Apache::lonxml::get_param($attr,$parstack,$safeeval); 1519: } 1520: if ($values->{$attr} eq '' | !defined($values->{$attr})) { 1521: $values->{$attr} = $defaults->{$attr}->{'default'}; 1522: next; 1523: } 1524: my $test = $defaults->{$attr}->{'test'}; 1525: if (! &$test($values->{$attr})) { 1526: &Apache::lonxml::warning 1527: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : ' 1528: .$defaults->{$attr}->{'default'} ); 1529: $values->{$attr} = $defaults->{$attr}->{'default'}; 1530: } 1531: } 1532: return ; 1533: } 1534: 1535: ##------------------------------------------------------- write_gnuplot_file 1536: sub write_gnuplot_file { 1537: my ($tmpdir,$filename,$target)= @_; 1538: my ($fontsize, $font_properties) = &get_font($target); 1539: my $gnuplot_input = ''; 1540: my $curve; 1541: # 1542: # Check to be sure we do not have any empty curves 1543: my @curvescopy; 1544: foreach my $curve (@curves) { 1545: if (exists($curve->{'function'})) { 1546: if ($curve->{'function'} !~ /^\s*$/) { 1547: push(@curvescopy,$curve); 1548: } 1549: } elsif (exists($curve->{'data'})) { 1550: foreach my $data (@{$curve->{'data'}}) { 1551: if (scalar(@$data) > 0) { 1552: push(@curvescopy,$curve); 1553: last; 1554: } 1555: } 1556: } 1557: } 1558: @curves = @curvescopy; 1559: # Collect all the colors 1560: my @Colors; 1561: push @Colors, $Apache::lonplot::plot{'bgcolor'}; 1562: push @Colors, $Apache::lonplot::plot{'fgcolor'}; 1563: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'}); 1564: foreach $curve (@curves) { 1565: push @Colors, ($curve->{'color'} ne '' ? 1566: $curve->{'color'} : 1567: $Apache::lonplot::plot{'fgcolor'} ); 1568: } 1569: # set term 1570: if ($target eq 'web') { 1571: $gnuplot_input .= 'set terminal png enhanced nocrop '; 1572: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on'); 1573: $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}. 1574: '/'.$font_properties->{'file'}.'.ttf" '; 1575: $gnuplot_input .= $fontsize; 1576: $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' '; 1577: $gnuplot_input .= "@Colors\n"; 1578: # set output 1579: $gnuplot_input .= "set output\n"; 1580: } elsif ($target eq 'tex') { 1581: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid "; 1582: if (!$font_properties->{'tex_no_file'}) { 1583: $gnuplot_input .= 1584: 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}. 1585: '/'.$font_properties->{'file'}.'.pfb" '; 1586: } 1587: $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" '; 1588: $gnuplot_input .= $fontsize; 1589: $gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/". 1590: &unescape($filename).".eps\"\n"; 1591: $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font. 1592: 1593: } 1594: # cartesian or polar plot? 1595: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') { 1596: $gnuplot_input .= 'set polar'.$/; 1597: } else { 1598: # Assume Cartesian 1599: } 1600: # cartesian or polar grid? 1601: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') { 1602: $gnuplot_input .= 'set grid polar'.$/; 1603: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') { 1604: $gnuplot_input .= 'set logscale x'.$/; 1605: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') { 1606: $gnuplot_input .= 'set logscale y'.$/; 1607: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') { 1608: $gnuplot_input .= 'set logscale x'.$/; 1609: $gnuplot_input .= 'set logscale y'.$/; 1610: } else { 1611: # Assume Cartesian 1612: } 1613: # solid or pattern for boxes? 1614: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') { 1615: $gnuplot_input .= 'set style fill solid '. 1616: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/; 1617: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') { 1618: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/; 1619: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') { 1620: } 1621: # margin 1622: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') { 1623: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/; 1624: } 1625: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') { 1626: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/; 1627: } 1628: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') { 1629: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/; 1630: } 1631: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') { 1632: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/; 1633: } 1634: 1635: # tic scales 1636: if ($version > 4) { 1637: $gnuplot_input .= 'set tics scale '. 1638: $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/; 1639: } else { 1640: $gnuplot_input .= 'set ticscale '. 1641: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/; 1642: } 1643: #boxwidth 1644: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') { 1645: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/; 1646: } 1647: # gridlayer 1648: $gnuplot_input .= 'set grid noxtics noytics front '.$/ 1649: if ($Apache::lonplot::plot{'gridlayer'} eq 'on'); 1650: 1651: # grid 1652: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on'); 1653: # border 1654: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'? 1655: 'set border'.$/ : 1656: 'set noborder'.$/ ); 1657: # sampling rate for non-data curves 1658: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n"; 1659: # title, xlabel, ylabel 1660: # titles 1661: my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : ''; 1662: my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : ''; 1663: 1664: if ($target eq 'tex') { 1665: $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ; 1666: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel)); 1667: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel)); 1668: } else { 1669: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ; 1670: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel)); 1671: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel)); 1672: } 1673: # tics 1674: if (%xtics) { 1675: $gnuplot_input .= "set xtics $xtics{'location'} "; 1676: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror "); 1677: $gnuplot_input .= "$xtics{'start'}, "; 1678: $gnuplot_input .= "$xtics{'increment'}, "; 1679: $gnuplot_input .= "$xtics{'end'} "; 1680: if ($target eq 'tex') { 1681: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso 8859-1 enc. 1682: } 1683: $gnuplot_input .= "\n"; 1684: if ($xtics{'minorfreq'} != 0) { 1685: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n"; 1686: } 1687: } else { 1688: if ($target eq 'tex') { 1689: $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc 1690: } 1691: } 1692: if (%ytics) { 1693: $gnuplot_input .= "set ytics $ytics{'location'} "; 1694: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror "); 1695: $gnuplot_input .= "$ytics{'start'}, "; 1696: $gnuplot_input .= "$ytics{'increment'}, "; 1697: $gnuplot_input .= "$ytics{'end'} "; 1698: if ($ytics{'minorfreq'} != 0) { 1699: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n"; 1700: } 1701: if ($target eq 'tex') { 1702: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding. 1703: } 1704: $gnuplot_input .= "\n"; 1705: 1706: } else { 1707: if ($target eq 'tex') { 1708: $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc. 1709: } 1710: } 1711: # axis 1712: if (%axis) { 1713: if ($axis{'xformat'} ne 'on') { 1714: $gnuplot_input .= "set format x "; 1715: if ($axis{'xformat'} eq 'off') { 1716: $gnuplot_input .= "\"\"\n"; 1717: } else { 1718: $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n"; 1719: } 1720: } 1721: if ($axis{'yformat'} ne 'on') { 1722: $gnuplot_input .= "set format y "; 1723: if ($axis{'yformat'} eq 'off') { 1724: $gnuplot_input .= "\"\"\n"; 1725: } else { 1726: $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n"; 1727: } 1728: } 1729: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n"; 1730: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n"; 1731: } 1732: # Key 1733: if (%key) { 1734: $gnuplot_input .= 'set key '.$key{'pos'}.' '; 1735: if ($key{'title'} ne '') { 1736: $gnuplot_input .= 'title "'.$key{'title'}.'" '; 1737: } 1738: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/; 1739: } else { 1740: $gnuplot_input .= 'set nokey'.$/; 1741: } 1742: # labels 1743: my $label; 1744: foreach $label (@labels) { 1745: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. 1746: $label->{'xpos'}.','.$label->{'ypos'}; 1747: if ($label->{'rotate'} ne '') { 1748: $gnuplot_input .= ' rotate by '.$label->{'rotate'}; 1749: } 1750: $gnuplot_input .= ' '.$label->{'justify'}; 1751: 1752: if ($target eq 'tex') { 1753: $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ; 1754: } 1755: $gnuplot_input .= $/; 1756: } 1757: if ($target eq 'tex') { 1758: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38; 1759: $gnuplot_input .="\n"; 1760: } 1761: # curves 1762: $gnuplot_input .= 'plot '; 1763: for (my $i = 0;$i<=$#curves;$i++) { 1764: $curve = $curves[$i]; 1765: $gnuplot_input.= ', ' if ($i > 0); 1766: if ($target eq 'tex') { 1767: $curve->{'linewidth'} *= 2; 1768: } 1769: if (exists($curve->{'function'})) { 1770: $gnuplot_input.= 1771: $curve->{'function'}.' title "'. 1772: $curve->{'name'}.'" with '. 1773: $curve->{'linestyle'}; 1774: 1775: if (($curve->{'linestyle'} eq 'points') || 1776: ($curve->{'linestyle'} eq 'linespoints') || 1777: ($curve->{'linestyle'} eq 'errorbars') || 1778: ($curve->{'linestyle'} eq 'xerrorbars') || 1779: ($curve->{'linestyle'} eq 'yerrorbars') || 1780: ($curve->{'linestyle'} eq 'xyerrorbars')) { 1781: $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; 1782: $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; 1783: } elsif ($curve->{'linestyle'} eq 'filledcurves') { 1784: $gnuplot_input.= ' '.$curve->{'limit'}; 1785: } elsif ($curve->{'linetype'} ne '' && 1786: $curve->{'linestyle'} eq 'lines') { 1787: $gnuplot_input.= ' linetype '; 1788: $gnuplot_input.= $linetypes{$curve->{'linetype'}}; 1789: $gnuplot_input.= ' linecolor rgb "'; 1790: # convert color from xaaaaaa to #aaaaaa 1791: $curve->{'color'} =~ s/^x/#/; 1792: $gnuplot_input.= $curve->{'color'}.'"'; 1793: } 1794: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; 1795: 1796: } elsif (exists($curve->{'data'})) { 1797: # Store data values in $datatext 1798: my $datatext = ''; 1799: # get new filename 1800: my $datafilename = "$tmpdir/$filename.data.$i"; 1801: my $fh=Apache::File->new(">$datafilename"); 1802: # Compile data 1803: my @Data = @{$curve->{'data'}}; 1804: my @Data0 = @{$Data[0]}; 1805: for (my $i =0; $i<=$#Data0; $i++) { 1806: my $dataset; 1807: foreach $dataset (@Data) { 1808: $datatext .= $dataset->[$i] . ' '; 1809: } 1810: $datatext .= $/; 1811: } 1812: # write file 1813: print $fh $datatext; 1814: close($fh); 1815: # generate gnuplot text 1816: $gnuplot_input.= '"'.$datafilename.'" title "'. 1817: $curve->{'name'}.'" with '. 1818: $curve->{'linestyle'}; 1819: if (($curve->{'linestyle'} eq 'points') || 1820: ($curve->{'linestyle'} eq 'linespoints') || 1821: ($curve->{'linestyle'} eq 'errorbars') || 1822: ($curve->{'linestyle'} eq 'xerrorbars') || 1823: ($curve->{'linestyle'} eq 'yerrorbars') || 1824: ($curve->{'linestyle'} eq 'xyerrorbars')) { 1825: $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; 1826: $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; 1827: } elsif ($curve->{'linestyle'} eq 'filledcurves') { 1828: $gnuplot_input.= ' '.$curve->{'limit'}; 1829: } elsif ($curve->{'linetype'} ne '' && 1830: $curve->{'linestyle'} eq 'lines') { 1831: $gnuplot_input.= ' linetype '; 1832: $gnuplot_input.= $linetypes{$curve->{'linetype'}}; 1833: $gnuplot_input.= ' linecolor rgb "'; 1834: # convert color from xaaaaaa to #aaaaaa 1835: $curve->{'color'} =~ s/^x/#/; 1836: $gnuplot_input.= $curve->{'color'}.'"'; 1837: } 1838: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; 1839: } 1840: } 1841: # Write the output to a file. 1842: open (my $fh,">$tmpdir$filename.data"); 1843: binmode($fh, ":utf8"); 1844: print $fh $gnuplot_input; 1845: close($fh); 1846: # That's all folks. 1847: return ; 1848: } 1849: 1850: #---------------------------------------------- check_inputs 1851: sub check_inputs { 1852: ## Note: no inputs, no outputs - this acts only on global variables. 1853: ## Make sure we have all the input we need: 1854: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); } 1855: if (! %key ) {} # No key for this plot, thats okay 1856: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); } 1857: if (! defined($title )) {} # No title for this plot, thats okay 1858: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay 1859: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay 1860: if ($#labels < 0) { } # No labels for this plot, thats okay 1861: if ($#curves < 0) { 1862: &Apache::lonxml::warning("No curves specified for plot!!!!"); 1863: return ''; 1864: } 1865: my $curve; 1866: foreach $curve (@curves) { 1867: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){ 1868: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n"); 1869: return ''; 1870: } 1871: } 1872: } 1873: 1874: #------------------------------------------------ make_edit 1875: sub edit_attributes { 1876: my ($target,$token,$defaults,$keys) = @_; 1877: my ($result,@keys); 1878: if ($keys && ref($keys) eq 'ARRAY') { 1879: @keys = @$keys; 1880: } else { 1881: @keys = sort(keys(%$defaults)); 1882: } 1883: foreach my $attr (@keys) { 1884: # append a ' ' to the description if it doesn't have one already. 1885: my $description = $defaults->{$attr}->{'description'}; 1886: $description .= ' ' if ($description !~ / $/); 1887: if ($defaults->{$attr}->{'edit_type'} eq 'entry') { 1888: $result .= &Apache::edit::text_arg 1889: ($description,$attr,$token, 1890: $defaults->{$attr}->{'size'}); 1891: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') { 1892: $result .= &Apache::edit::select_or_text_arg 1893: ($description,$attr,$defaults->{$attr}->{'choices'},$token); 1894: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') { 1895: $result .= &Apache::edit::select_or_text_arg 1896: ($description,$attr,['on','off'],$token); 1897: } 1898: $result .= ' '; 1899: } 1900: return $result; 1901: } 1902: 1903: 1904: ################################################################### 1905: ## ## 1906: ## Insertion functions for editing plots ## 1907: ## ## 1908: ################################################################### 1909: 1910: sub insert_gnuplot { 1911: my $result = ''; 1912: # plot attributes 1913: $result .= "\n<gnuplot "; 1914: foreach my $attr (keys(%gnuplot_defaults)) { 1915: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\""; 1916: } 1917: $result .= ">"; 1918: # Add the components (most are commented out for simplicity) 1919: # $result .= &insert_key(); 1920: # $result .= &insert_axis(); 1921: # $result .= &insert_title(); 1922: # $result .= &insert_xlabel(); 1923: # $result .= &insert_ylabel(); 1924: $result .= &insert_curve(); 1925: # close up the <gnuplot> 1926: $result .= "\n</gnuplot>"; 1927: return $result; 1928: } 1929: 1930: sub insert_tics { 1931: my $result; 1932: $result .= &insert_xtics() . &insert_ytics; 1933: return $result; 1934: } 1935: 1936: sub insert_xtics { 1937: my $result; 1938: $result .= "\n <xtics "; 1939: foreach my $attr (keys(%tic_defaults)) { 1940: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" "; 1941: } 1942: $result .= "/>"; 1943: return $result; 1944: } 1945: 1946: sub insert_ytics { 1947: my $result; 1948: $result .= "\n <ytics "; 1949: foreach my $attr (keys(%tic_defaults)) { 1950: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" "; 1951: } 1952: $result .= "/>"; 1953: return $result; 1954: } 1955: 1956: sub insert_key { 1957: my $result; 1958: $result .= "\n <key "; 1959: foreach my $attr (keys(%key_defaults)) { 1960: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\""; 1961: } 1962: $result .= " />"; 1963: return $result; 1964: } 1965: 1966: sub insert_axis{ 1967: my $result; 1968: $result .= "\n <axis "; 1969: foreach my $attr (keys(%axis_defaults)) { 1970: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\""; 1971: } 1972: $result .= " />"; 1973: return $result; 1974: } 1975: 1976: sub insert_title { return "\n <title></title>"; } 1977: sub insert_xlabel { return "\n <xlabel></xlabel>"; } 1978: sub insert_ylabel { return "\n <ylabel></ylabel>"; } 1979: 1980: sub insert_label { 1981: my $result; 1982: $result .= "\n <label "; 1983: foreach my $attr (keys(%label_defaults)) { 1984: $result .= "\n $attr=\"". 1985: $label_defaults{$attr}->{'default'}."\""; 1986: } 1987: $result .= "></label>"; 1988: return $result; 1989: } 1990: 1991: sub insert_curve { 1992: my $result; 1993: $result .= "\n <curve "; 1994: foreach my $attr (keys(%curve_defaults)) { 1995: $result .= "\n $attr=\"". 1996: $curve_defaults{$attr}->{'default'}."\""; 1997: } 1998: $result .= " >"; 1999: $result .= &insert_data().&insert_data()."\n </curve>"; 2000: } 2001: 2002: sub insert_function { 2003: my $result; 2004: $result .= "\n <function></function>"; 2005: return $result; 2006: } 2007: 2008: sub insert_data { 2009: my $result; 2010: $result .= "\n <data></data>"; 2011: return $result; 2012: } 2013: 2014: ##---------------------------------------------------------------------- 2015: 1; 2016: __END__ 2017: 2018: