loncom/homework/randomlabel.pm - view

File: [LON-CAPA] / loncom / homework / randomlabel.pm
Revision 1.86: download - view: text, annotated - select for diffs
Thu May 10 10:27:22 2007 UTC (16 years, 11 months ago) by foxr
Branches: MAIN
CVS tags: HEAD

BZ 5020.. somewhere in the midst of things width/height got switched..
but only partially... this fixes the problem, by consistently switching
width/height, but I need to still go back and make height/width unswitched.

1: # The LearningOnline Network with CAPA 2: # random labelling tool 3: # 4: # $Id: randomlabel.pm,v 1.86 2007/05/10 10:27:22 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: # SYNTAX: 29: # <randomlabel bgimg="URL" width="12" height="45" texwidth="50"> 30: # <labelgroup name="GroupOne" type="image"> 31: # <location x="123" y="456" /> 32: # <location x="321" y="654" /> 33: # <location x="213" y="546" /> 34: # <label description="TEXT-1">IMG-URL</label> 35: # <label description="TEXT-2">IMG-URL</label> 36: # <label description="TEXT-3">IMG-URL</label> 37: # </labelgroup> 38: # <labelgroup name="GroupTwo" type="text"> 39: # <location x="12" y="45" /> 40: # <location x="32" y="65" /> 41: # <location x="21" y="54" /> 42: # <label>TEXT-1</label> 43: # <label>TEXT-2</label> 44: # <label>TEXT-3</label> 45: # </labelgroup> 46: # </randomlabel> 47: # =========================================== 48: # side effect: 49: # location (123,456): $GroupOne[0] = 2 # images give out indexes 50: # (321,654): $GroupOne[1] = 1 51: # (213,546): $GroupOne[2] = 0 52: # location (12,45) : $GroupTwo[0] = "TEXT-3" 53: # (32,65) : $GroupTwo[1] = "TEXT-1" 54: # (21,54) : $GroupTwo[2] = "TEXT-2" 55: # =========================================== 56: package Apache::randomlabel; 57: use Apache::lonnet; 58: use strict; 59: use Apache::edit; 60: use Apache::File(); 61: use Apache::Constants qw(:common :http); 62: use Image::Magick; 63: use Apache::lonplot; 64: use lib '/home/httpd/lib/perl/'; 65: use LONCAPA; 66: 67: 68: my %args; 69: my $cgi_id; 70: my $scale_factor; # image scale factor. 71: my $label_xscale; # Label scale factor (needed for gnuplot). 72: my $label_yscale; 73: 74: 75: BEGIN { 76: &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label','bgimg')); 77: } 78: 79: 80: 81: sub check_int { 82: # utility function to do error checking on a integer. 83: my ($num,$default) = @_; 84: $default = 100 if (! defined($default)); 85: $num =~ s/\s+//g; # We dont need no stinkin white space! 86: # If it is a real, just grab the integer part. 87: ($num,undef) = split (/\./,$num) if ($num =~ /\./); 88: # set to default if what we have left doesn't match anything... 89: $num = $default unless ($num =~/^\d+$/); 90: return $num; 91: } 92: 93: # Get width/height from an image tag... 94: # 95: # Parameters: 96: # tag - tag potentially containing height/width attributes. 97: # def_width - Default width. 98: # def_height - Default height. 99: # Returns: 100: # list containing width/height. 101: # 102: sub extract_tag_sizes { 103: my ($tag, $dw, $dh) = @_; 104: $tag =~ s/\s+/ /g; # Collapse whitespace. 105: $tag =~ s/\s*=\s*/=/g; # kill space around ='s. 106: $tag =~ s/[<>\"]//g; # Get rid of the <">'s too. 107: 108: &Apache::lonxml::debug("Compressed tag: $tag"); 109: my @taglist = split(/ /,$tag); 110: foreach my $attribute (@taglist) { 111: if ($attribute =~ /^width/i) { 112: my ($e, $s)= split(/=/,$attribute); 113: $dw = $s; 114: } 115: if ($attribute =~ /^height/i) { 116: my ($e, $s) = split(/=/,$attribute); 117: $dh = $s; 118: } 119: } 120: return($dw, $dh); 121: 122: } 123: 124: my ($height_param,$width_param); 125: sub start_randomlabel { 126: 127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 128: my $result=''; 129: push (@Apache::lonxml::namespace,'randomlabel'); 130: ($height_param,$width_param)=(0,0); 131: $label_xscale = 1.0; # Assume image size not overridden. 132: $label_yscale = 1.0; 133: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval); 134: if ( defined($bgimg) && $bgimg !~ /^http:/ ) { 135: $bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg); 136: if (&Apache::lonnet::repcopy($bgimg) ne 'ok') { 137: $bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif'; 138: } 139: } 140: $Apache::randomlabel::obj_cnt=0; 141: if ($target eq 'web') { 142: $cgi_id=&Apache::loncommon::get_cgi_id(); 143: %args=(); 144: $args{"cgi.$cgi_id.BGIMG"}=&escape($bgimg); 145: $height_param = &Apache::lonxml::get_param('height',$parstack, $safeeval); 146: $width_param = &Apache::lonxml::get_param('width', $parstack, $safeeval); 147: } elsif ($target eq 'tex' && defined($bgimg)) { 148: $result.=&make_eps_image($bgimg,$parstack,$safeeval); 149: } elsif ($target eq 'edit') { 150: $result.=&Apache::edit::tag_start($target,$token); 151: $Apache::edit::bgimgsrc= 152: &Apache::lonxml::get_param('bgimg',$parstack,$safeeval); 153: $Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth; 154: $result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' '; 155: $result.=&Apache::edit::browse('bgimg').' '; 156: $result.=&Apache::edit::search('bgimg').'<br />'. 157: &Apache::edit::text_arg('Width(pixel):' ,'width' ,$token,6). 158: &Apache::edit::text_arg('Height(pixel):','height' ,$token,6). 159: &Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6). 160: &Apache::edit::end_row().&Apache::edit::start_spanning_row(); 161: } elsif ($target eq 'modified') { 162: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 163: $safeeval,'bgimg','width', 164: 'height','texwidth'); 165: if ($constructtag) { 166: $result = &Apache::edit::rebuild_tag($token); 167: $result.=&Apache::edit::handle_insert(); 168: } 169: } 170: return $result; 171: } 172: 173: sub end_randomlabel { 174: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 175: my $result=''; 176: my $count; 177: pop @Apache::lonxml::namespace; 178: if ($target eq 'web') { 179: $count = $Apache::randomlabel::obj_cnt; 180: if( $count != 0) { $args{"cgi.$cgi_id.OBJCOUNT"}=$count; } 181: $result.='<img src="/adm/randomlabel.png?token='.$cgi_id.'" /><br />'."\n"; 182: &Apache::lonnet::appenv(%args); 183: } elsif ($target eq 'tex') { 184: $result='\end{picture}\\\\'; 185: $result.= ' \vskip -'.$height_param.' mm } \\\\ '; 186: } elsif ($target eq 'edit') { 187: $result.=&Apache::edit::end_table; 188: } 189: return $result; 190: } 191: 192: 193: sub start_bgimg { 194: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 195: my $result=''; 196: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 197: &Apache::lonxml::startredirection(); 198: } 199: return $result; 200: } 201: 202: sub end_bgimg { 203: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 204: my $result=''; 205: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 206: my $bgimg=&Apache::lonxml::endredirection(); 207: if ($target eq 'web') { 208: 209: # If the tag produced has sizes, they override ours. 210: # (for now anyway). 211: # 212: &Apache::lonxml::debug("Base sizes: $width_param x $height_param"); 213: 214: my ($plot_x, $plot_y) = &extract_tag_sizes($bgimg, 215: $width_param, 216: $height_param); 217: &Apache::lonxml::debug("Extracted sizes: $plot_x x $plot_y"); 218: if ($width_param) { 219: $label_xscale = $plot_x / $width_param; 220: } 221: if ($height_param) { 222: $label_yscale = $plot_y / $height_param; 223: } 224: &Apache::lonxml::debug("Scale factors: $label_xscale $label_yscale"); 225: 226: &Apache::lonxml::debug("Image: $bgimg"); 227: $bgimg=&Apache::imageresponse::clean_up_image($bgimg); 228: &Apache::lonxml::debug("Cleaned image: $bgimg"); 229: $args{"cgi.$cgi_id.BGIMG"}=&escape($bgimg); 230: } elsif ($target eq 'tex') { 231: # Some bg images can create latex for us... e.g. gnuplot. 232: # If it looks like we have some latex use that, 233: # otherwise, assume this is a resource name that must 234: # be converted into the latex to create an eps insertion. 235: # 236: my $src = $bgimg; 237: $src =~ s/\s+$//s; 238: $src =~ s/^\s+//s; 239: 240: #If this is a dynamically generated image, it will 241: #be in latex already, with a comment header that 242: #describes the dimensions: 243: 244: if($src =~ /^%DYNAMICIMAGE:/) { 245: $Apache::lonxml::debug = 0; 246: &Apache::lonxml::debug("Dynamic image"); 247: my ($commentline, $junk) = split(/\n/, $src); 248: &Apache::lonxml::debug("Comment line was: $commentline"); 249: my $trash; 250: my $initial_width; 251: ($trash, $initial_width, $height_param, $width_param) = 252: split(/:/,$commentline); 253: &Apache::lonxml::debug("internal web Width/height: $initial_width $height_param"); 254: &Apache::lonxml::debug("Texwitdh: $width_param"); 255: if($initial_width == 0) { 256: $initial_width = $width_param; 257: } 258: # strip off the comments since output does not always 259: # preserve \n's: 260: # 261: $src =~ s/$commentline//; 262: $scale_factor = $width_param / $initial_width; 263: $height_param = $height_param*$scale_factor; 264: 265: $label_xscale = 1.0; # $scale_factor; 266: $label_yscale = 1.0; # $scale_factor; 267: 268: &Apache::lonxml::debug("height $height_param"); 269: &Apache::lonxml::debug("Width $width_param"); 270: &Apache::lonxml::debug("Scale factors: $label_xscale $label_yscale"); 271: my $dirty_width = $width_param + 5; 272: # 273: # Somewhere here it looks like height_param and 274: # width_param got backwards... 275: # 276: $result .= '\parbox{'.$dirty_width.'mm}{'; 277: $result .= " $src \n"; 278: $result .= '\setlength{\unitlength}{1mm}'."\n"; 279: $result .= '\begin{picture}('."$height_param,$width_param)"; 280: $result .= "(0,-$width_param)"; 281: $result .= "\n"; 282: $Apache::lonxml::debug = 0; 283: 284: } else { 285: $result.=&make_eps_image($bgimg,$parstack,$safeeval,-2); 286: } 287: } 288: } 289: return $result; 290: } 291: sub make_eps_image { 292: my ($bgimg,$parstack,$safeeval,$depth)=@_; 293: &Apache::lonxml::debug("image prior to get_eps_image: $bgimg"); 294: my ($path,$file) = &Apache::londefdef::get_eps_image($bgimg); 295: &Apache::lonxml::debug("image after: $bgimg"); 296: ($height_param,$width_param)= 297: &Apache::londefdef::image_size($bgimg,0.3,$parstack,$safeeval, 298: $depth,1); 299: 300: &Apache::lonxml::debug("Image size: $height_param x $width_param"); 301: 302: my $dirtywidth=$width_param+5; 303: 304: my $result ="\n".'\vspace*{2mm}\noindent'."\n". 305: '\parbox{'.$dirtywidth. 306: ' mm}{ \noindent \epsfxsize='.$width_param. 307: ' mm \epsffile{'.$path.$file. 308: '}\setlength{\unitlength}{1mm}'."\n".' \begin{picture}('. 309: $width_param.','.$height_param.')(0,-'.$height_param.')'."\n"; 310: my $magick = Image::Magick->new; 311: $magick->Read($bgimg); 312: my $initial_width = $magick->Get('width'); 313: &Apache::lonxml::debug("ImageMagick thinks width is; $initial_width"); 314: $scale_factor = $width_param / $initial_width; 315: return $result; 316: } 317: 318: sub start_labelgroup { 319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 320: my $result=''; 321: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval); 322: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval); 323: $type =~tr/A-Z/a-z/; 324: if ($target ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) { 325: &Apache::lonxml::error("Only _ a-z A-Z and 0-9 are allowed in the name to a labelgroup, and the first character can not be a number.<br />"); 326: } 327: if ($target eq 'web' || $target eq 'tex' || 328: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') { 329: $Apache::randomlabel::groupname=$name; 330: $Apache::randomlabel::type=$type; 331: @Apache::randomlabel::xcoord = (); 332: @Apache::randomlabel::ycoord = (); 333: @Apache::randomlabel::value = (); 334: @Apache::randomlabel::label_arr = (); 335: @Apache::randomlabel::description = (); 336: } elsif ($target eq 'edit') { 337: $result.=&Apache::edit::tag_start($target,$token); 338: $result.=&Apache::edit::text_arg('Name:','name',$token). 339: &Apache::edit::select_arg('Type:','type',['text','image'],$token); 340: if (!defined($token->[2]{'TeXsize'})) { 341: $token->[2]{'TeXsize'}='\normalsize'; 342: } 343: $result.=&Apache::edit::select_arg('TeX font size:','TeXsize', 344: ['\tiny','\scriptsize', 345: '\footnotesize','\small', 346: '\normalsize','\large','\Large', 347: '\LARGE','\huge','\Huge'], 348: $token); 349: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); 350: } elsif ($target eq 'modified') { 351: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 352: $safeeval,'name','type', 353: 'TeXsize'); 354: if ($constructtag) { 355: $result = &Apache::edit::rebuild_tag($token); 356: $result.=&Apache::edit::handle_insert(); 357: } 358: } 359: return $result; 360: } 361: 362: # 363: # Utility sub to compute the width of a label. 364: # 365: sub get_label_width { 366: my $label = shift; 367: &Apache::lonxml::debug("image label = $label"); 368: if (-e $label) { 369: &Apache::lonxml::debug("$label exists"); 370: } else { 371: &Apache::lonxml::debug("$label does not exist"); 372: } 373: my $magick = Image::Magick->new; 374: $magick->Read($label); 375: my $pixel_width = $magick->Get('width'); 376: return $pixel_width * $scale_factor; 377: 378: 379: } 380: 381: sub get_label_height { 382: my $label = shift; 383: &Apache::lonxml::debug("image label = $label"); 384: if (-e $label) { 385: &Apache::lonxml::debug("$label exists"); 386: } else { 387: &Apache::lonxml::debug("$label does not exist"); 388: } 389: my $magick = Image::Magick->new; 390: $magick->Read($label); 391: my $pixel_height = $magick->Get('height'); 392: return $pixel_height * $scale_factor; 393: } 394: 395: sub add_vars { 396: my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_; 397: if (!defined($name) || $name eq '') { return; } 398: my $code = '${'.$name."}{'".($order+1)."'}='".$label."';"; 399: my $out=Apache::run::run($code,$safeeval); 400: if ($value) { 401: $code = '${'.$name."}{'value_".($order+1)."'}='".$value."';"; 402: $out=Apache::run::run($code,$safeeval); 403: $code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';"; 404: $out=Apache::run::run($code,$safeeval); 405: } 406: if ($image) { 407: my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';"; 408: my $out=Apache::run::run($code,$safeeval); 409: } 410: $code = '${'.$name."}{'numlocations'}='".($order+1)."';"; 411: $out=Apache::run::run($code,$safeeval); 412: } 413: 414: # begin to assign labels to locations 415: sub end_labelgroup { 416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 417: my $gname = $Apache::randomlabel::groupname; 418: my $type = $Apache::randomlabel::type; 419: my $result=''; 420: if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' || 421: $target eq 'analyze') { 422: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr); 423: &Apache::structuretags::shuffle(\@idx_arr); 424: for(0 .. $#Apache::randomlabel::label_arr) { 425: my $str; 426: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]"; 427: my $x = $Apache::randomlabel::xcoord[$_]; 428: my $y = $Apache::randomlabel::ycoord[$_]; 429: my $value = $Apache::randomlabel::value[$_]; 430: my $i=$Apache::randomlabel::obj_cnt++; 431: if( $type eq 'text') { 432: &add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval); 433: $str = join(':',$x,$y,&escape($label)); 434: $args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:'; 435: } elsif ( $type eq 'image') { 436: &add_vars($gname,$_, 437: $Apache::randomlabel::description[$idx_arr[$_]], 438: $idx_arr[$_],$value,$label,$safeeval); 439: $str = join(':',$x,$y,&escape($label)); 440: $args{"cgi.$cgi_id.OBJTYPE"}.='IMAGE:'; 441: } else { 442: &Apache::lonxml::error('Unknown type of label :'.$type.':'); 443: } 444: if ($target eq 'web') { $args{"cgi.$cgi_id.OBJ$i"} =$str; } 445: } 446: } elsif ($target eq 'tex') { 447: my $WX1=0; # Web x-coord. of upper left corner (ULC) 448: my $WY1=0; # Web y-coord. of (ULC) 449: my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2); 450: my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2); 451: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); 452: if (!defined($TeXsize)) { $TeXsize='\\normalsize'; } 453: 454: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr); 455: &Apache::structuretags::shuffle(\@idx_arr); 456: 457: &Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":"); 458: $Apache::lonxml::debug = 0; 459: for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) { 460: my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]"; 461: my $x = $Apache::randomlabel::xcoord[$i]; 462: my $y = $Apache::randomlabel::ycoord[$i]; 463: if ( $type eq 'text' ) { 464: # FIXME the 3.5 here is the 'height' of the letter in TeX 465: $y=$y-3.5; 466: } 467: &Apache::lonxml::debug("initially: x= $x y= $y"); 468: my $value = $Apache::randomlabel::value[$i]; 469: #x latex coordinate 470: my $tcX=($x)*($width_param/$wwidth); 471: &Apache::lonxml::debug("wparam = $width_param wwidth = $wwidth, texx = $tcX"); 472: #y latex coordinate 473: # my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 ); 474: my $tcY=$height_param-$y*($height_param/$wheight); 475: if ( $type eq 'image') { 476: my $label_height = &get_label_height($label); 477: $tcY=$tcY-$label_height; 478: } 479: 480: &Apache::lonxml::debug("hparam = $height_param wheight = $wheight texy = $tcY"); 481: $tcX=sprintf('%.2f',$tcX); 482: $tcY=sprintf('%.2f',$tcY); 483: $result .= '\put('.$tcX.','.$tcY.'){'; 484: if( $type eq 'text') { 485: $result.= $TeXsize.' \bf '.$label."}\n"; 486: &add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval); 487: } elsif ( $type eq 'image') { 488: my ($path,$file) = &Apache::londefdef::get_eps_image($label); 489: my $image_name = $path.$file; 490: # 491: # Note that spaces in e.. \includegraphics cause problems for Latex 492: # so they get replaced by _'s by lonprintout/printout and us: 493: # 494: my $label_width = &get_label_width($label); 495: 496: $result .= '\includegraphics[width='.$label_width.'mm]{' 497: .$image_name."}}\n"; 498: &add_vars($gname,$i, 499: $Apache::randomlabel::description[$idx_arr[$i]], 500: $idx_arr[$i],$value,$label,$safeeval); 501: } else { 502: &Apache::lonxml::error('Unknown type of label :'.$type.':'); 503: } 504: } 505: $Apache::lonxml::debug =0; 506: } elsif ($target eq 'edit') { 507: $result.=&Apache::edit::end_table; 508: } 509: return $result; 510: } 511: 512: # <location x="123" y="456" value="some value"/> 513: sub start_location { 514: $Apache::lonxml::debug = 0; 515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 516: my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50); 517: my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50); 518: &Apache::lonxml::debug("x = $x y = $y"); 519: $x = $x*$label_xscale; 520: $y = $y*$label_yscale; 521: &Apache::lonxml::debug(" H = $height_param W = $width_param"); 522: &Apache::lonxml::debug(" XS = $label_xscale YS = $label_yscale"); 523: &Apache::lonxml::debug(" X = $x Y = $y"); 524: my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval); 525: my $result=''; 526: push(@Apache::randomlabel::xcoord,$x); 527: push(@Apache::randomlabel::ycoord,$y); 528: push(@Apache::randomlabel::value,$value); 529: if ($target eq 'edit') { 530: $result.=&Apache::edit::tag_start($target,$token); 531: $result.=&Apache::edit::text_arg('X:','x',$token,4). 532: &Apache::edit::text_arg('Y:','y',$token,4). 533: &Apache::edit::entercoords('x','y','attribute','width','height').'   '. 534: &Apache::edit::text_arg('Value:','value',$token). 535: &Apache::edit::end_row(); 536: $result.=&Apache::edit::end_table; 537: } elsif ($target eq 'modified') { 538: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 539: $safeeval,'x','y','value'); 540: if ($constructtag) { 541: $result = &Apache::edit::rebuild_tag($token); 542: $result.=&Apache::edit::handle_insert(); 543: } 544: } 545: $Apache::lonxml::debug = 0; 546: return $result; 547: } 548: 549: sub end_location { 550: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 551: my @result; 552: if ($target eq 'edit') { @result=('','no') } 553: return @result; 554: } 555: 556: # <label>$var_abc</label> 557: sub start_label { 558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 559: my $result=''; 560: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2); 561: if ($target eq 'web' || $target eq 'tex' || 562: $target eq 'grade' || $target eq 'answer' || $target eq 'analyze') { 563: &Apache::lonxml::startredirection; 564: } elsif ($target eq 'edit') { 565: $result.=&Apache::edit::tag_start($target,$token,"$type Label"); 566: my $text=&Apache::lonxml::get_all_text("/label",$parser,$style); 567: if ($type eq 'image') { 568: $result.=&Apache::edit::end_row(). 569: &Apache::edit::start_spanning_row(); 570: $result.=&Apache::edit::text_arg('Description:','description', 571: $token); 572: } 573: if ($type eq 'text') { $result.="Label Text:"; } 574: if ($type eq 'image') { $result.="Path to image: "; } 575: $result.=&Apache::edit::editline('',$text,'',50). 576: &Apache::edit::end_table(); 577: } elsif ($target eq 'modified') { 578: $result = '<label>'; 579: if ($type eq 'image') { 580: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 581: $safeeval, 582: 'description'); 583: if ($constructtag) { 584: $result = &Apache::edit::rebuild_tag($token); 585: } else { 586: $result = $token->[4]; 587: } 588: } 589: $result.=&Apache::edit::modifiedfield("/label",$parser); 590: } 591: return $result; 592: } 593: 594: sub end_label { 595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; 596: my @result; 597: if ($target eq 'edit') { 598: @result=('','no') ; 599: } elsif ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || 600: $target eq 'answer' || $target eq 'analyze') { 601: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2); 602: my $ltext=&Apache::lonxml::endredirection; 603: if ($type eq 'image') { 604: if ($target eq 'tex') { 605: # For tex targets, our image url has been potentially corrupted 606: # by prepending \'s in front of special latex symbols. 607: # For now we only worry about the _ case (most common?) 608: # There's a whole host of theim in lonxml::latex_special_symbols 609: # that could potentially have to be re-done. 610: 611: $ltext =~ s/\\_/_/g; 612: } 613: &Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]"); 614: $ltext=&Apache::imageresponse::clean_up_image($ltext); 615: # $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], 616: # $ltext); 617: &Apache::lonxml::debug("into $ltext"); 618: my $description = &Apache::lonxml::get_param('description', 619: $parstack,$safeeval); 620: push(@Apache::randomlabel::description,$description); 621: } else { 622: $ltext=~s/[\r\n]*//gs 623: } 624: push(@Apache::randomlabel::label_arr,$ltext); 625: } 626: return @result; 627: } 628: 629: 1; 630: __END__ 631: