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| 1 : | gage | 5 | #!/usr/local/bin/perl |
| 2 : | sam | 2 | |
| 3 : | #################################################################### | ||
| 4 : | # Copyright @ 1995-1998 University of Rochester | ||
| 5 : | # All Rights Reserved | ||
| 6 : | #################################################################### | ||
| 7 : | |||
| 8 : | =head1 NAME | ||
| 9 : | |||
| 10 : | PGbasicmacros.pl --- located in the courseScripts directory | ||
| 11 : | |||
| 12 : | =head1 SYNPOSIS | ||
| 13 : | |||
| 14 : | |||
| 15 : | |||
| 16 : | =head1 DESCRIPTION | ||
| 17 : | |||
| 18 : | |||
| 19 : | |||
| 20 : | =cut | ||
| 21 : | |||
| 22 : | # this is equivalent to use strict, but can be used within the Safe compartment. | ||
| 23 : | BEGIN{ | ||
| 24 : | be_strict; | ||
| 25 : | } | ||
| 26 : | |||
| 27 : | gage | 5 | _PGbasicmacros_init(); # initialize constants |
| 28 : | sam | 2 | |
| 29 : | =head2 Answer blank macros: | ||
| 30 : | |||
| 31 : | These produce answer blanks of various sizes or pop up lists or radio answer buttons. | ||
| 32 : | The names for the answer blanks are | ||
| 33 : | generated implicitly. | ||
| 34 : | |||
| 35 : | ans_rule( width ) | ||
| 36 : | tex_ans_rule( width ) | ||
| 37 : | ans_radio_buttons(value1=>label1, value2,label2 => value3,label3=>...) | ||
| 38 : | pop_up_list(@list) # list consists of (value => label, PR => "Product rule",...) | ||
| 39 : | |||
| 40 : | To indicate the checked position of radio buttons put a '%' in front of the value: C<ans_radio_buttons(1, 'Yes','%2','No')> | ||
| 41 : | will have 'No' checked. C<tex_ans_rule> works inside math equations in C<HTML_tth> mode. It does not work in C<Latex2HTML> mode | ||
| 42 : | since this mode produces gif pictures. | ||
| 43 : | |||
| 44 : | |||
| 45 : | The following method is defined in F<PG.pl> for entering the answer evaluators corresponding | ||
| 46 : | to answer rules with automatically generated names. The answer evaluators are matched with the | ||
| 47 : | answer rules in the order in which they appear on the page. | ||
| 48 : | |||
| 49 : | ANS(ans_evaluator1, ans_evaluator2,...); | ||
| 50 : | |||
| 51 : | These are more primitive macros which produce answer blanks for specialized cases when complete | ||
| 52 : | control over the matching of answers blanks and answer evaluators is desired. | ||
| 53 : | The names of the answer blanks must be generated manually, and it is best if they do NOT begin | ||
| 54 : | with the default answer prefix (currently AnSwEr). | ||
| 55 : | |||
| 56 : | |||
| 57 : | NAMED_ANS_RULE(name, width) | ||
| 58 : | NAMED_ANS_BOX(name, rows, cols) | ||
| 59 : | NAMED_ANS_RADIO(name, value,label,) | ||
| 60 : | NAMED_ANS_RADIO_OPTION(name, value,label) | ||
| 61 : | NAMED_ANS_RADIO_BUTTONS(name,value1,label1,value2,label2,...) | ||
| 62 : | check_box('-name' =>answer5,'-value' =>'statement3','-label' =>'I loved this course!' ) | ||
| 63 : | NAMED_POP_UP_LIST($name, @list) # list consists of (value => tag, PR => "Product rule",...) | ||
| 64 : | |||
| 65 : | (Name is the name of the variable, value is the value given to the variable when this option is selected, | ||
| 66 : | and label is the text printed next to the button or check box. Check box variables can have multiple values.) | ||
| 67 : | |||
| 68 : | NAMED_ANS_RADIO_BUTTONS creates a sequence of NAMED_ANS_RADIO and NAMED_ANS_RADIO_OPTION items which | ||
| 69 : | are output either as an array or, in scalar context, as the array glued together with spaces. It is | ||
| 70 : | usually easier to use this than to manually construct the radio buttons by hand. However, sometimes | ||
| 71 : | extra flexibility is desiredin which case: | ||
| 72 : | |||
| 73 : | When entering radio buttons using the "NAMED" format, you should use NAMED_ANS_RADIO button for the first button | ||
| 74 : | and then use NAMED_ANS_RADIO_OPTION for the remaining buttons. NAMED_ANS_RADIO requires a matching answer evalutor, | ||
| 75 : | while NAMED_ANS_RADIO_OPTION does not. The name used for NAMED_ANS_RADIO_OPTION should match the name | ||
| 76 : | used for NAMED_ANS_RADIO (and the associated answer evaluator). | ||
| 77 : | |||
| 78 : | |||
| 79 : | |||
| 80 : | The following method is defined in in F<PG.pl> for entering the answer evaluators corresponding | ||
| 81 : | to answer rules with automatically generated names. The answer evaluators are matched with the | ||
| 82 : | answer rules in the order in which they appear on the page. | ||
| 83 : | |||
| 84 : | NAMED_ANS(name1 => ans_evaluator1, name2 => ans_evaluator2,...); | ||
| 85 : | |||
| 86 : | These auxiliary macros are defined in PG.pl | ||
| 87 : | |||
| 88 : | |||
| 89 : | NEW_ANS_NAME( number ); # produces a new answer blank name from a number by adding a prefix (AnSwEr) | ||
| 90 : | # and registers this name as an implicitly labeled answer | ||
| 91 : | # Its use is paired with each answer evaluator being entered using ANS() | ||
| 92 : | |||
| 93 : | ANS_NUM_TO_NAME(number); # adds the prefix (AnSwEr) to the number, but does nothing else. | ||
| 94 : | |||
| 95 : | RECORD_ANS_NAME( name ); # records the order in which the answer blank is rendered | ||
| 96 : | # This is called by all of the constructs above, but must | ||
| 97 : | # be called explicitly if an input blank is constructed explictly | ||
| 98 : | # using HTML code. | ||
| 99 : | |||
| 100 : | These are legacy macros: | ||
| 101 : | |||
| 102 : | ANS_RULE( number, width ); # equivalent to NAMED_ANS_RULE( NEW_ANS_NAME(number), width) | ||
| 103 : | ANS_BOX( question_number,height, width ); # equivalent to NAMED_ANS_BOX( NEW_ANS_NAME(number), height, width) | ||
| 104 : | ANS_RADIO( question_number, value,tag ); # equivalent to NAMED_ANS_RADIO( NEW_ANS_NAME(number), value,tag) | ||
| 105 : | ANS_RADIO_OPTION( question_number, value,tag ); # equivalent to NAMED_ANS_RADIO_OPTION( ANS_NUM_TO_NAME(number), value,tag) | ||
| 106 : | |||
| 107 : | |||
| 108 : | =cut | ||
| 109 : | |||
| 110 : | |||
| 111 : | sub NAMED_ANS_RULE { | ||
| 112 : | my($name,$col) = @_; | ||
| 113 : | my $len = 0.07*$col; | ||
| 114 : | my $answer_value = ''; | ||
| 115 : | $answer_value = ${$main::inputs_ref}{$name} if defined(${$main::inputs_ref}{$name}); | ||
| 116 : | if ($answer_value =~ /\0/ ) { | ||
| 117 : | my @answers = split("\0", $answer_value); | ||
| 118 : | $answer_value = shift(@answers); # use up the first answer | ||
| 119 : | $main::rh_sticky_answers{$name}=\@answers; # store the rest | ||
| 120 : | $answer_value= '' unless defined($answer_value); | ||
| 121 : | } | ||
| 122 : | $name = RECORD_ANS_NAME($name); | ||
| 123 : | MODES( | ||
| 124 : | TeX => "\\mbox{\\parbox[t]{10pt}{\\hrulefill}}\\hrulefill\\quad ", | ||
| 125 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=TEXT SIZE=$col NAME=\"$name\" VALUE = \"\">\n\\end{rawhtml}\n!, | ||
| 126 : | HTML => "<INPUT TYPE=TEXT SIZE=$col NAME=\"$name\" VALUE = \"$answer_value\">\n" | ||
| 127 : | ); | ||
| 128 : | } | ||
| 129 : | |||
| 130 : | sub NAMED_ANS_RULE_OPTION { | ||
| 131 : | &NAMED_ANS_RULE_EXTENSION; | ||
| 132 : | } | ||
| 133 : | |||
| 134 : | sub NAMED_ANS_RULE_EXTENSION { | ||
| 135 : | my($name,$col) = @_; | ||
| 136 : | my $len = 0.07*$col; | ||
| 137 : | my $answer_value = ''; | ||
| 138 : | $answer_value = ${$main::inputs_ref}{$name} if defined(${$main::inputs_ref}{$name}); | ||
| 139 : | if ( defined($main::rh_sticky_answers{$name}) ) { | ||
| 140 : | $answer_value = shift( @{$main::rh_sticky_answers{$name}}); | ||
| 141 : | $answer_value = '' unless defined($answer_value); | ||
| 142 : | } | ||
| 143 : | MODES( | ||
| 144 : | TeX => '\\hrulefill\\quad ', | ||
| 145 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=TEXT SIZE=$col NAME=\"$name\" VALUE = \"\">\n\\end{rawhtml}\n!, | ||
| 146 : | HTML => qq!<INPUT TYPE=TEXT SIZE=$col NAME = "$name" VALUE = "$answer_value">\n! | ||
| 147 : | ); | ||
| 148 : | } | ||
| 149 : | |||
| 150 : | sub ANS_RULE { | ||
| 151 : | my($number,$col) = @_; | ||
| 152 : | my $name = NEW_ANS_NAME($number); | ||
| 153 : | NAMED_ANS_RULE($name,$col); | ||
| 154 : | } | ||
| 155 : | |||
| 156 : | |||
| 157 : | sub NAMED_ANS_BOX { | ||
| 158 : | my($name,$row,$col) = @_; | ||
| 159 : | $row = 10 unless defined($row); | ||
| 160 : | $col = 80 unless defined($col); | ||
| 161 : | $name = RECORD_ANS_NAME($name); | ||
| 162 : | my $len = 0.07*$col; | ||
| 163 : | my $height = .07*$row; | ||
| 164 : | my $answer_value = ''; | ||
| 165 : | $answer_value = $main::inputs_ref->{$name} if defined( $main::inputs_ref->{$name} ); | ||
| 166 : | my $out = M3( | ||
| 167 : | qq!\\vskip $height in \\hrulefill\\quad !, | ||
| 168 : | qq!\\begin{rawhtml}<TEXTAREA NAME="$name" ROWS="$row" COLS="$col" | ||
| 169 : | WRAP="VIRTUAL">$answer_value</TEXTAREA>\\end{rawhtml}!, | ||
| 170 : | qq!<TEXTAREA NAME="$name" ROWS="$row" COLS="$col" | ||
| 171 : | WRAP="VIRTUAL">$answer_value</TEXTAREA>! | ||
| 172 : | ); | ||
| 173 : | $out; | ||
| 174 : | } | ||
| 175 : | |||
| 176 : | sub ANS_BOX { | ||
| 177 : | my($number,$row,$col) = @_; | ||
| 178 : | my $name = NEW_ANS_NAME($number); | ||
| 179 : | NAMED_ANS_BOX($name,$row,$col); | ||
| 180 : | } | ||
| 181 : | |||
| 182 : | sub NAMED_ANS_RADIO { | ||
| 183 : | my $name = shift; | ||
| 184 : | my $value = shift; | ||
| 185 : | my $tag =shift; | ||
| 186 : | $name = RECORD_ANS_NAME($name); | ||
| 187 : | my $checked = ''; | ||
| 188 : | if ($value =~/^\%/) { | ||
| 189 : | $value =~ s/^\%//; | ||
| 190 : | $checked = 'CHECKED' | ||
| 191 : | } | ||
| 192 : | if (defined($main::inputs_ref->{$name}) ) { | ||
| 193 : | if ($main::inputs_ref->{$name} eq $value) { | ||
| 194 : | $checked = 'CHECKED' | ||
| 195 : | } else { | ||
| 196 : | $checked = ''; | ||
| 197 : | } | ||
| 198 : | |||
| 199 : | } | ||
| 200 : | |||
| 201 : | MODES( | ||
| 202 : | TeX => qq!\\item{$tag}\n!, | ||
| 203 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=RADIO NAME="$name" VALUE="$value" $checked>\\end{rawhtml}$tag!, | ||
| 204 : | HTML => qq!<INPUT TYPE=RADIO NAME="$name" VALUE="$value" $checked>$tag! | ||
| 205 : | ); | ||
| 206 : | |||
| 207 : | } | ||
| 208 : | |||
| 209 : | sub NAMED_ANS_RADIO_OPTION { | ||
| 210 : | my $name = shift; | ||
| 211 : | my $value = shift; | ||
| 212 : | my $tag =shift; | ||
| 213 : | |||
| 214 : | |||
| 215 : | my $checked = ''; | ||
| 216 : | if ($value =~/^\%/) { | ||
| 217 : | $value =~ s/^\%//; | ||
| 218 : | $checked = 'CHECKED' | ||
| 219 : | } | ||
| 220 : | if (defined($main::inputs_ref->{$name}) ) { | ||
| 221 : | if ($main::inputs_ref->{$name} eq $value) { | ||
| 222 : | $checked = 'CHECKED' | ||
| 223 : | } else { | ||
| 224 : | $checked = ''; | ||
| 225 : | } | ||
| 226 : | |||
| 227 : | } | ||
| 228 : | |||
| 229 : | MODES( | ||
| 230 : | TeX => qq!\\item{$tag}\n!, | ||
| 231 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=RADIO NAME="$name" VALUE="$value" $checked>\\end{rawhtml}$tag!, | ||
| 232 : | HTML => qq!<INPUT TYPE=RADIO NAME="$name" VALUE="$value" $checked>$tag! | ||
| 233 : | ); | ||
| 234 : | |||
| 235 : | } | ||
| 236 : | |||
| 237 : | sub NAMED_ANS_RADIO_BUTTONS { | ||
| 238 : | my $name =shift; | ||
| 239 : | my $value = shift; | ||
| 240 : | my $tag = shift; | ||
| 241 : | |||
| 242 : | |||
| 243 : | my @out = (); | ||
| 244 : | push(@out, NAMED_ANS_RADIO($name, $value,$tag)); | ||
| 245 : | my @buttons = @_; | ||
| 246 : | while (@buttons) { | ||
| 247 : | $value = shift @buttons; $tag = shift @buttons; | ||
| 248 : | push(@out, NAMED_ANS_RADIO_OPTION($name, $value,$tag)); | ||
| 249 : | } | ||
| 250 : | (wantarray) ? @out : join(" ",@out); | ||
| 251 : | } | ||
| 252 : | sub ANS_RADIO { | ||
| 253 : | my $number = shift; | ||
| 254 : | my $value = shift; | ||
| 255 : | my $tag =shift; | ||
| 256 : | my $name = NEW_ANS_NAME($number); | ||
| 257 : | NAMED_ANS_RADIO($name,$value,$tag); | ||
| 258 : | } | ||
| 259 : | |||
| 260 : | sub ANS_RADIO_OPTION { | ||
| 261 : | my $number = shift; | ||
| 262 : | my $value = shift; | ||
| 263 : | my $tag =shift; | ||
| 264 : | |||
| 265 : | |||
| 266 : | my $name = ANS_NUM_TO_NAME($number); | ||
| 267 : | NAMED_ANS_RADIO_OPTION($name,$value,$tag); | ||
| 268 : | } | ||
| 269 : | sub ANS_RADIO_BUTTONS { | ||
| 270 : | my $number =shift; | ||
| 271 : | my $value = shift; | ||
| 272 : | my $tag = shift; | ||
| 273 : | |||
| 274 : | |||
| 275 : | my @out = (); | ||
| 276 : | push(@out, ANS_RADIO($number, $value,$tag)); | ||
| 277 : | my @buttons = @_; | ||
| 278 : | while (@buttons) { | ||
| 279 : | $value = shift @buttons; $tag = shift @buttons; | ||
| 280 : | push(@out, ANS_RADIO_OPTION($number, $value,$tag)); | ||
| 281 : | } | ||
| 282 : | (wantarray) ? @out : join(" ",@out); | ||
| 283 : | } | ||
| 284 : | |||
| 285 : | sub NAMED_ANS_CHECKBOX { | ||
| 286 : | my $name = shift; | ||
| 287 : | my $value = shift; | ||
| 288 : | my $tag =shift; | ||
| 289 : | $name = RECORD_ANS_NAME($name); | ||
| 290 : | |||
| 291 : | my $checked = ''; | ||
| 292 : | if ($value =~/^\%/) { | ||
| 293 : | $value =~ s/^\%//; | ||
| 294 : | $checked = 'CHECKED' | ||
| 295 : | } | ||
| 296 : | |||
| 297 : | if (defined($main::inputs_ref->{$name}) ) { | ||
| 298 : | if ($main::inputs_ref->{$name} eq $value) { | ||
| 299 : | $checked = 'CHECKED' | ||
| 300 : | } | ||
| 301 : | else { | ||
| 302 : | $checked = ''; | ||
| 303 : | } | ||
| 304 : | |||
| 305 : | } | ||
| 306 : | |||
| 307 : | MODES( | ||
| 308 : | TeX => qq!\\item{$tag}\n!, | ||
| 309 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=CHECKBOX NAME="$name" VALUE="$value" $checked>\\end{rawhtml}$tag!, | ||
| 310 : | HTML => qq!<INPUT TYPE=CHECKBOX NAME="$name" VALUE="$value" $checked>$tag! | ||
| 311 : | ); | ||
| 312 : | |||
| 313 : | } | ||
| 314 : | |||
| 315 : | sub NAMED_ANS_CHECKBOX_OPTION { | ||
| 316 : | my $name = shift; | ||
| 317 : | my $value = shift; | ||
| 318 : | my $tag =shift; | ||
| 319 : | |||
| 320 : | my $checked = ''; | ||
| 321 : | if ($value =~/^\%/) { | ||
| 322 : | $value =~ s/^\%//; | ||
| 323 : | $checked = 'CHECKED' | ||
| 324 : | } | ||
| 325 : | |||
| 326 : | if (defined($main::inputs_ref->{$name}) ) { | ||
| 327 : | if ($main::inputs_ref->{$name} eq $value) { | ||
| 328 : | $checked = 'CHECKED' | ||
| 329 : | } | ||
| 330 : | else { | ||
| 331 : | $checked = ''; | ||
| 332 : | } | ||
| 333 : | |||
| 334 : | } | ||
| 335 : | |||
| 336 : | MODES( | ||
| 337 : | TeX => qq!\\item{$tag}\n!, | ||
| 338 : | Latex2HTML => qq!\\begin{rawhtml}\n<INPUT TYPE=CHECKBOX NAME="$name" VALUE="$value" $checked>\\end{rawhtml}$tag!, | ||
| 339 : | HTML => qq!<INPUT TYPE=CHECKBOX NAME="$name" VALUE="$value" $checked>$tag! | ||
| 340 : | ); | ||
| 341 : | |||
| 342 : | } | ||
| 343 : | |||
| 344 : | sub NAMED_ANS_CHECKBOX_BUTTONS { | ||
| 345 : | my $name =shift; | ||
| 346 : | my $value = shift; | ||
| 347 : | my $tag = shift; | ||
| 348 : | |||
| 349 : | my @out = (); | ||
| 350 : | push(@out, NAMED_ANS_CHECKBOX($name, $value,$tag)); | ||
| 351 : | |||
| 352 : | my @buttons = @_; | ||
| 353 : | while (@buttons) { | ||
| 354 : | $value = shift @buttons; $tag = shift @buttons; | ||
| 355 : | push(@out, NAMED_ANS_CHECKBOX_OPTION($name, $value,$tag)); | ||
| 356 : | } | ||
| 357 : | |||
| 358 : | (wantarray) ? @out : join(" ",@out); | ||
| 359 : | } | ||
| 360 : | |||
| 361 : | sub ANS_CHECKBOX { | ||
| 362 : | my $number = shift; | ||
| 363 : | my $value = shift; | ||
| 364 : | my $tag =shift; | ||
| 365 : | my $name = NEW_ANS_NAME($number); | ||
| 366 : | |||
| 367 : | NAMED_ANS_CHECKBOX($name,$value,$tag); | ||
| 368 : | } | ||
| 369 : | |||
| 370 : | sub ANS_CHECKBOX_OPTION { | ||
| 371 : | my $number = shift; | ||
| 372 : | my $value = shift; | ||
| 373 : | my $tag =shift; | ||
| 374 : | my $name = ANS_NUM_TO_NAME($number); | ||
| 375 : | |||
| 376 : | NAMED_ANS_CHECKBOX_OPTION($name,$value,$tag); | ||
| 377 : | } | ||
| 378 : | |||
| 379 : | sub ANS_CHECKBOX_BUTTONS { | ||
| 380 : | my $number =shift; | ||
| 381 : | my $value = shift; | ||
| 382 : | my $tag = shift; | ||
| 383 : | |||
| 384 : | my @out = (); | ||
| 385 : | push(@out, ANS_CHECKBOX($number, $value, $tag)); | ||
| 386 : | |||
| 387 : | my @buttons = @_; | ||
| 388 : | while (@buttons) { | ||
| 389 : | $value = shift @buttons; $tag = shift @buttons; | ||
| 390 : | push(@out, ANS_CHECKBOX_OPTION($number, $value,$tag)); | ||
| 391 : | } | ||
| 392 : | |||
| 393 : | (wantarray) ? @out : join(" ",@out); | ||
| 394 : | } | ||
| 395 : | |||
| 396 : | sub ans_rule { | ||
| 397 : | my $len = shift; # gives the optional length of the answer blank | ||
| 398 : | $len = 20 unless $len ; | ||
| 399 : | my $name = NEW_ANS_NAME(++$main::ans_rule_count); | ||
| 400 : | NAMED_ANS_RULE($name ,$len); | ||
| 401 : | } | ||
| 402 : | sub ans_rule_extension { | ||
| 403 : | my $len = shift; | ||
| 404 : | $len = 20 unless $len ; | ||
| 405 : | my $name = NEW_ANS_NAME($main::ans_rule_count); # don't update the answer name | ||
| 406 : | NAMED_ANS_RULE($name ,$len); | ||
| 407 : | } | ||
| 408 : | sub ans_radio_buttons { | ||
| 409 : | my $name = NEW_ANS_NAME(++$main::ans_rule_count); | ||
| 410 : | my @radio_buttons = NAMED_ANS_RADIO_BUTTONS($name, @_); | ||
| 411 : | |||
| 412 : | if ($main::displayMode eq 'TeX') { | ||
| 413 : | $radio_buttons[0] = "\n\\begin{itemize}\n" . $radio_buttons[0]; | ||
| 414 : | $radio_buttons[$#radio_buttons] .= "\n\\end{itemize}\n"; | ||
| 415 : | } | ||
| 416 : | |||
| 417 : | (wantarray) ? @radio_buttons: join(" ", @radio_buttons); | ||
| 418 : | } | ||
| 419 : | |||
| 420 : | #added 6/14/2000 by David Etlinger | ||
| 421 : | sub ans_checkbox { | ||
| 422 : | my $name = NEW_ANS_NAME( ++$main::ans_rule_count ); | ||
| 423 : | my @checkboxes = NAMED_ANS_CHECKBOX_BUTTONS( $name, @_ ); | ||
| 424 : | |||
| 425 : | if ($main::displayMode eq 'TeX') { | ||
| 426 : | $checkboxes[0] = "\n\\begin{itemize}\n" . $checkboxes[0]; | ||
| 427 : | $checkboxes[$#checkboxes] .= "\n\\end{itemize}\n"; | ||
| 428 : | } | ||
| 429 : | |||
| 430 : | (wantarray) ? @checkboxes: join(" ", @checkboxes); | ||
| 431 : | } | ||
| 432 : | |||
| 433 : | |||
| 434 : | ## define a version of ans_rule which will work inside TeX math mode or display math mode -- at least for tth mode. | ||
| 435 : | ## This is great for displayed fractions. | ||
| 436 : | ## This will not work with latex2HTML mode since it creates gif equations. | ||
| 437 : | |||
| 438 : | sub tex_ans_rule { | ||
| 439 : | my $len = shift; | ||
| 440 : | $len = 20 unless $len ; | ||
| 441 : | my $name = NEW_ANS_NAME(++$main::ans_rule_count); | ||
| 442 : | my $answer_rule = NAMED_ANS_RULE($name ,$len); # we don't want to create three answer rules in different modes. | ||
| 443 : | my $out = MODES( | ||
| 444 : | 'TeX' => $answer_rule, | ||
| 445 : | 'Latex2HTML' => '\\fbox{Answer boxes cannot be placed inside typeset equations}', | ||
| 446 : | 'HTML_tth' => '\\begin{rawhtml} '. $answer_rule.'\\end{rawhtml}', | ||
| 447 : | 'HTML' => $answer_rule | ||
| 448 : | ); | ||
| 449 : | |||
| 450 : | $out; | ||
| 451 : | } | ||
| 452 : | sub tex_ans_rule_extension { | ||
| 453 : | my $len = shift; | ||
| 454 : | $len = 20 unless $len ; | ||
| 455 : | my $name = NEW_ANS_NAME($main::ans_rule_count); | ||
| 456 : | my $answer_rule = NAMED_ANS_RULE($name ,$len); # we don't want to create three answer rules in different modes. | ||
| 457 : | my $out = MODES( | ||
| 458 : | 'TeX' => $answer_rule, | ||
| 459 : | 'Latex2HTML' => '\fbox{Answer boxes cannot be placed inside typeset equations}', | ||
| 460 : | 'HTML_tth' => '\\begin{rawhtml} '. $answer_rule.'\\end{rawhtml}', | ||
| 461 : | 'HTML' => $answer_rule | ||
| 462 : | ); | ||
| 463 : | |||
| 464 : | $out; | ||
| 465 : | } | ||
| 466 : | gage | 5 | # still needs some cleanup. |
| 467 : | sub NAMED_TEX_ANS_RULE { | ||
| 468 : | my $name = shift; | ||
| 469 : | my $len = shift; | ||
| 470 : | $len = 20 unless $len ; | ||
| 471 : | my $answer_rule = NAMED_ANS_RULE($name ,$len); # we don't want to create three answer rules in different modes. | ||
| 472 : | my $out = MODES( | ||
| 473 : | 'TeX' => $answer_rule, | ||
| 474 : | 'Latex2HTML' => '\\fbox{Answer boxes cannot be placed inside typeset equations}', | ||
| 475 : | 'HTML_tth' => '\\begin{rawhtml} '. $answer_rule.'\\end{rawhtml}', | ||
| 476 : | 'HTML' => $answer_rule | ||
| 477 : | ); | ||
| 478 : | |||
| 479 : | $out; | ||
| 480 : | } | ||
| 481 : | sub NAMED_TEX_ANS_RULE_EXTENSION { | ||
| 482 : | my $name = shift; | ||
| 483 : | my $len = shift; | ||
| 484 : | $len = 20 unless $len ; | ||
| 485 : | my $answer_rule = NAMED_ANS_RULE_EXTENSION($name ,$len); # we don't want to create three answer rules in different modes. | ||
| 486 : | my $out = MODES( | ||
| 487 : | 'TeX' => $answer_rule, | ||
| 488 : | 'Latex2HTML' => '\fbox{Answer boxes cannot be placed inside typeset equations}', | ||
| 489 : | 'HTML_tth' => '\\begin{rawhtml} '. $answer_rule.'\\end{rawhtml}', | ||
| 490 : | 'HTML' => $answer_rule | ||
| 491 : | ); | ||
| 492 : | |||
| 493 : | $out; | ||
| 494 : | } | ||
| 495 : | sam | 2 | sub ans_box { |
| 496 : | my $row = shift; | ||
| 497 : | my $col =shift; | ||
| 498 : | $row = 5 unless $row; | ||
| 499 : | $col = 80 unless $col; | ||
| 500 : | my $name = NEW_ANS_NAME(++$main::ans_rule_count); | ||
| 501 : | NAMED_ANS_BOX($name ,$row,$col); | ||
| 502 : | } | ||
| 503 : | |||
| 504 : | #this is legacy code; use ans_checkbox instead | ||
| 505 : | sub checkbox { | ||
| 506 : | my %options = @_; | ||
| 507 : | qq!<INPUT TYPE="checkbox" NAME="$options{'-name'}" VALUE="$options{'-value'}">$options{'-label'}! | ||
| 508 : | } | ||
| 509 : | |||
| 510 : | |||
| 511 : | sub NAMED_POP_UP_LIST { | ||
| 512 : | my $name = shift; | ||
| 513 : | my @list = @_; | ||
| 514 : | $name = RECORD_ANS_NAME($name); # record answer name | ||
| 515 : | my $answer_value = ''; | ||
| 516 : | $answer_value = ${$main::inputs_ref}{$name} if defined(${$main::inputs_ref}{$name}); | ||
| 517 : | my $out = ""; | ||
| 518 : | if ($main::displayMode eq "HTML" or $main::displayMode eq "HTML_tth") { | ||
| 519 : | $out = qq!<SELECT NAME = "$name" SIZE=1> \n!; | ||
| 520 : | my $i; | ||
| 521 : | foreach ($i=0; $i< @list; $i=$i+2) { | ||
| 522 : | my $select_flag = ($list[$i] eq $answer_value) ? "SELECTED" : ""; | ||
| 523 : | $out .= qq!<OPTION $select_flag VALUE ="$list[$i]" > $list[$i+1] </OPTION>\n!; | ||
| 524 : | }; | ||
| 525 : | $out .= " </SELECT>\n"; | ||
| 526 : | } elsif ( $main::displayMode eq "Latex2HTML") { | ||
| 527 : | $out = qq! \\begin{rawhtml}<SELECT NAME = "$name" SIZE=1> \\end{rawhtml} \n !; | ||
| 528 : | my $i; | ||
| 529 : | foreach ($i=0; $i< @list; $i=$i+2) { | ||
| 530 : | my $select_flag = ($list[$i] eq $answer_value) ? "SELECTED" : ""; | ||
| 531 : | $out .= qq!\\begin{rawhtml}<OPTION $select_flag VALUE ="$list[$i]" > $list[$i+1] </OPTION>\\end{rawhtml}\n!; | ||
| 532 : | }; | ||
| 533 : | $out .= " \\begin{rawhtml}</SELECT>\\end{rawhtml}\n"; | ||
| 534 : | } elsif ( $main::displayMode eq "TeX") { | ||
| 535 : | $out .= "\\fbox{?}"; | ||
| 536 : | } | ||
| 537 : | |||
| 538 : | } | ||
| 539 : | |||
| 540 : | sub pop_up_list { | ||
| 541 : | my @list = @_; | ||
| 542 : | my $name = NEW_ANS_NAME(++$main::ans_rule_count); # get new answer name | ||
| 543 : | NAMED_POP_UP_LIST($name, @list); | ||
| 544 : | } | ||
| 545 : | |||
| 546 : | # end answer blank macros | ||
| 547 : | |||
| 548 : | =head2 Hints and solutions macros | ||
| 549 : | |||
| 550 : | solution('text','text2',...); | ||
| 551 : | SOLUTION('text','text2',...); # equivalent to TEXT(solution(...)); | ||
| 552 : | |||
| 553 : | hint('text', 'text2', ...); | ||
| 554 : | HINT('text', 'text2',...); # equivalent to TEXT("$main::BR$main::HINT" . hint(@_) . "$main::BR") if hint(@_); | ||
| 555 : | |||
| 556 : | Solution prints its concatenated input when the check box named 'ShowSol' is set and | ||
| 557 : | the time is after the answer date. (The variable C<$envir{'inputs_ref'}->>C<{'ShowSol'}> is set.) | ||
| 558 : | |||
| 559 : | PG_FLAGS{'solutionExists'} is set to 1 when a solution is available for viewing. | ||
| 560 : | |||
| 561 : | Hints are shown only after the number of attempts is greater than $main::showHint. | ||
| 562 : | ($main::showHint defaults to 1.) | ||
| 563 : | |||
| 564 : | =cut | ||
| 565 : | |||
| 566 : | |||
| 567 : | |||
| 568 : | # solution prints its input when $displaySolutionsQ is set. | ||
| 569 : | # use as TEXT(solution("blah, blah"); | ||
| 570 : | # \$solutionExists | ||
| 571 : | # is passed to processProblem which displays a "show Solution" button | ||
| 572 : | # when a solution is available for viewing | ||
| 573 : | |||
| 574 : | |||
| 575 : | sub solution { | ||
| 576 : | my @in = @_; | ||
| 577 : | my $out = ''; | ||
| 578 : | $main::solutionExists =1; | ||
| 579 : | if ($envir{'inputs_ref'}->{'ShowSol'}) { | ||
| 580 : | my %inlist; | ||
| 581 : | grep($inlist{$_}++,@{ $envir{'PRINT_FILE_NAMES_FOR'} }); | ||
| 582 : | if ( defined($inlist{$main::studentLogin}) and ($inlist{$main::studentLogin} > 0) ) { | ||
| 583 : | $out = join(' ',@in); | ||
| 584 : | } elsif ($envir{'answerDate'} < time ){ | ||
| 585 : | $out = join(' ',@in); | ||
| 586 : | } | ||
| 587 : | } | ||
| 588 : | |||
| 589 : | $out; | ||
| 590 : | } | ||
| 591 : | |||
| 592 : | |||
| 593 : | |||
| 594 : | sub SOLUTION { | ||
| 595 : | TEXT( solution(@_)) ; | ||
| 596 : | } | ||
| 597 : | |||
| 598 : | |||
| 599 : | |||
| 600 : | sub hint { | ||
| 601 : | my @in = @_; | ||
| 602 : | my $out = ''; | ||
| 603 : | |||
| 604 : | $main::showHint = 1 unless defined($main::showHint); | ||
| 605 : | $main::numOfAttempts = 0 unless defined($main::numOfAttempts); | ||
| 606 : | if ($main::displayMode eq 'TeX') { | ||
| 607 : | $out = ''; # do nothing since hints are not available for download | ||
| 608 : | |||
| 609 : | } elsif ($main::numOfAttempts >= $main::showHint ) { #numOfAttempts is only defined in interactive mode | ||
| 610 : | if ( ${$main::inputs_ref}{'ShowHint'} ) { | ||
| 611 : | $out = join(' ',@in); # show hint | ||
| 612 : | } elsif ($main::displayMode eq 'HTML' or $main::displayMode eq 'HTML_tth') { | ||
| 613 : | $out = checkbox(-name=>'ShowHint', | ||
| 614 : | -value=>1, | ||
| 615 : | -label=>"Show Hint", | ||
| 616 : | -override => 1 | ||
| 617 : | ) ; | ||
| 618 : | } elsif ($main::displayMode eq 'Latex2HTML') { | ||
| 619 : | $out = '\\begin{rawhtml}' . checkbox(-name=>'ShowHint', | ||
| 620 : | -value=>1, | ||
| 621 : | -label=>"Show Hint", | ||
| 622 : | -override => 1 | ||
| 623 : | ) . '\\end{rawhtml}' ; | ||
| 624 : | } else { | ||
| 625 : | warn "Error: The subroutine hints doesn't know what to do in display mode $main::displayMode."; | ||
| 626 : | $out = ''; | ||
| 627 : | } | ||
| 628 : | } else { | ||
| 629 : | # do nothing since the $numOf Attempts is not yet large enough. | ||
| 630 : | $out = ''; | ||
| 631 : | } | ||
| 632 : | $out ; | ||
| 633 : | } | ||
| 634 : | |||
| 635 : | |||
| 636 : | |||
| 637 : | sub HINT { | ||
| 638 : | TEXT("$main::BR$main::HINT" . hint(@_) . "$main::BR") if hint(@_); | ||
| 639 : | } | ||
| 640 : | |||
| 641 : | |||
| 642 : | |||
| 643 : | # End hints and solutions macros | ||
| 644 : | ################################# | ||
| 645 : | |||
| 646 : | # Produces a random number between $begin and $end with increment 1. | ||
| 647 : | # You do not have to worry about integer or floating point types. | ||
| 648 : | |||
| 649 : | =head2 Pseudo-random number generator | ||
| 650 : | |||
| 651 : | Usage: | ||
| 652 : | random(0,5,.1) # produces a random number between 0 and 5 in increments of .1 | ||
| 653 : | non_zero_random(0,5,.1) # gives a non-zero random number | ||
| 654 : | |||
| 655 : | SRAND(seed) # resets the main random generator -- use very cautiously | ||
| 656 : | |||
| 657 : | |||
| 658 : | SRAND(time) will create a different problem everytime it is called. This makes it difficult | ||
| 659 : | to check the answers :-). | ||
| 660 : | |||
| 661 : | SRAND($envir{'inputs_ref'}->{'key'} ) will create a different problem for each login session. | ||
| 662 : | This is probably what is desired. | ||
| 663 : | |||
| 664 : | =cut | ||
| 665 : | |||
| 666 : | |||
| 667 : | sub random { | ||
| 668 : | my ($begin, $end, $incr) = @_; | ||
| 669 : | $main::PG_random_generator->random($begin,$end,$incr); | ||
| 670 : | } | ||
| 671 : | |||
| 672 : | |||
| 673 : | sub non_zero_random { ##gives a non-zero random number | ||
| 674 : | my (@arguments)=@_; | ||
| 675 : | my $a=0; | ||
| 676 : | my $i=100; #safety counter | ||
| 677 : | while ($a==0 && ( 0 < $i-- ) ) { | ||
| 678 : | $a=random(@arguments); | ||
| 679 : | } | ||
| 680 : | $a; | ||
| 681 : | } | ||
| 682 : | |||
| 683 : | sub SRAND { # resets the main random generator -- use cautiously | ||
| 684 : | my $seed = shift; | ||
| 685 : | $main::PG_random_generator -> srand($seed); | ||
| 686 : | } | ||
| 687 : | |||
| 688 : | # display macros | ||
| 689 : | |||
| 690 : | =head2 Display Macros | ||
| 691 : | |||
| 692 : | These macros produce different output depending on the display mode being used to show | ||
| 693 : | the problem on the screen, or whether the problem is being converted to TeX to produce | ||
| 694 : | a hard copy output. | ||
| 695 : | |||
| 696 : | MODES ( TeX => "Output this in TeX mode", | ||
| 697 : | HTML => "output this in HTML mode", | ||
| 698 : | HTML_tth => "output this in HTML_tth mode", | ||
| 699 : | Latex2HTML => "output this in Latex2HTML mode", | ||
| 700 : | ) | ||
| 701 : | |||
| 702 : | TEX (tex_version, html_version) #obsolete | ||
| 703 : | |||
| 704 : | M3 (tex_version, latex2html_version, html_version) #obsolete | ||
| 705 : | |||
| 706 : | |||
| 707 : | |||
| 708 : | =cut | ||
| 709 : | |||
| 710 : | |||
| 711 : | sub TEX { | ||
| 712 : | my ($tex, $html ) = @_; | ||
| 713 : | MODES(TeX => $tex, HTML => $html, HTML_tth => $html); | ||
| 714 : | } | ||
| 715 : | |||
| 716 : | |||
| 717 : | sub M3 { | ||
| 718 : | my($tex,$l2h,$html) = @_; | ||
| 719 : | MODES(TeX => $tex, Latex2HTML => $l2h, HTML => $html, HTML_tth => $html); | ||
| 720 : | } | ||
| 721 : | |||
| 722 : | # This replaces M3. You can add new modes at will to this one. | ||
| 723 : | |||
| 724 : | sub MODES { | ||
| 725 : | my %options = @_; | ||
| 726 : | return $options{$main::displayMode} | ||
| 727 : | if defined( $options{$main::displayMode} ); | ||
| 728 : | |||
| 729 : | # default searches. | ||
| 730 : | if ($main::displayMode eq "Latex2HTML") { | ||
| 731 : | return $options{TeX} | ||
| 732 : | if defined( $options{TeX} ); | ||
| 733 : | return $options{HTML} | ||
| 734 : | if defined( $options{HTML} ); | ||
| 735 : | die " ERROR in using MODES: 'HTML' and 'TeX' options not defined for 'Latex2HTML'"; | ||
| 736 : | } | ||
| 737 : | |||
| 738 : | if ($main::displayMode eq "HTML_tth") { | ||
| 739 : | return $options{HTML} | ||
| 740 : | if defined( $options{HTML} ); | ||
| 741 : | die " ERROR in using MODES: 'HTML' option not defined for HTML_tth"; | ||
| 742 : | |||
| 743 : | } | ||
| 744 : | |||
| 745 : | # trap undefined errors | ||
| 746 : | die "ERROR in defining MODES: Can't find |$main::displayMode| among | ||
| 747 : | available options:" . join(" ", keys(%options) ) . "\n\n"; | ||
| 748 : | |||
| 749 : | } | ||
| 750 : | |||
| 751 : | |||
| 752 : | # end display macros | ||
| 753 : | |||
| 754 : | |||
| 755 : | =head2 Display constants | ||
| 756 : | |||
| 757 : | @ALPHABET ALPHABET() capital letter alphabet -- ALPHABET[0] = 'A' | ||
| 758 : | $PAR PAR() paragraph character (\par or <p>) | ||
| 759 : | $BR BR() line break character | ||
| 760 : | $LQ LQ() left double quote | ||
| 761 : | $RQ RQ() right double quote | ||
| 762 : | $BM BM() begin math | ||
| 763 : | $EM EM() end math | ||
| 764 : | $BDM BDM() begin display math | ||
| 765 : | $EDM EDM() end display math | ||
| 766 : | $LTS LTS() strictly less than | ||
| 767 : | $GTS GTS() strictly greater than | ||
| 768 : | $LTE LTE() less than or equal | ||
| 769 : | $GTE GTE() greater than or equal | ||
| 770 : | $BEGIN_ONE_COLUMN BEGIN_ONE_COLUMN() begin one-column mode | ||
| 771 : | $END_ONE_COLUMN END_ONE_COLUMN() end one-column mode | ||
| 772 : | $SOL SOLUTION_HEADING() solution headline | ||
| 773 : | $HINT HINT_HEADING() hint headline | ||
| 774 : | $US US() underscore character | ||
| 775 : | $SPACE SPACE() space character (tex and latex only) | ||
| 776 : | $BBOLD BBOLD() begin bold typeface | ||
| 777 : | $EBOLD EBOLD() end bold typeface | ||
| 778 : | $HR HR() horizontal rule | ||
| 779 : | $LBRACE LBRACE() left brace | ||
| 780 : | $LB LB () left brace | ||
| 781 : | $RBRACE RBRACE() right brace | ||
| 782 : | $RB RB () right brace | ||
| 783 : | $DOLLAR DOLLAR() a dollar sign | ||
| 784 : | $PERCENT PERCENT() a percent sign | ||
| 785 : | $CARET CARET() a caret sign | ||
| 786 : | $PI PI() the number pi | ||
| 787 : | $E E() the number e | ||
| 788 : | |||
| 789 : | =cut | ||
| 790 : | |||
| 791 : | |||
| 792 : | gage | 5 | sub _PGbasicmacros_init { |
| 793 : | sam | 2 | $main::PAR = PAR(); |
| 794 : | $main::BR = BR(); | ||
| 795 : | $main::LQ = LQ(); | ||
| 796 : | $main::RQ = RQ(); | ||
| 797 : | $main::BM = BM(); | ||
| 798 : | $main::EM = EM(); | ||
| 799 : | $main::BDM = BDM(); | ||
| 800 : | $main::EDM = EDM(); | ||
| 801 : | $main::LTS = LTS(); | ||
| 802 : | $main::GTS = GTS(); | ||
| 803 : | $main::LTE = LTE(); | ||
| 804 : | $main::GTE = GTE(); | ||
| 805 : | $main::BEGIN_ONE_COLUMN = BEGIN_ONE_COLUMN(); | ||
| 806 : | $main::END_ONE_COLUMN = END_ONE_COLUMN(); | ||
| 807 : | $main::SOL = SOLUTION_HEADING(); | ||
| 808 : | $main::HINT = HINT_HEADING(); | ||
| 809 : | $main::US = US(); | ||
| 810 : | $main::SPACE = SPACE(); | ||
| 811 : | $main::BBOLD = BBOLD(); | ||
| 812 : | $main::EBOLD = EBOLD(); | ||
| 813 : | $main::HR = HR(); | ||
| 814 : | $main::LBRACE = LBRACE(); | ||
| 815 : | $main::RBRACE = RBRACE(); | ||
| 816 : | $main::LB = LB(); | ||
| 817 : | $main::RB = RB(); | ||
| 818 : | $main::DOLLAR = DOLLAR(); | ||
| 819 : | $main::PERCENT = PERCENT(); | ||
| 820 : | $main::CARET = CARET(); | ||
| 821 : | $main::PI = PI(); | ||
| 822 : | $main::E = E(); | ||
| 823 : | @main::ALPHABET = ('A'..'ZZ'); | ||
| 824 : | } | ||
| 825 : | |||
| 826 : | # A utility variable. Notice that "B"=$ALPHABET[1] and | ||
| 827 : | # "ABCD"=@ALPHABET[0..3]. | ||
| 828 : | |||
| 829 : | sub ALPHABET { | ||
| 830 : | ('A'..'ZZ')[@_]; | ||
| 831 : | } | ||
| 832 : | |||
| 833 : | ############################################################### | ||
| 834 : | # Some constants which are different in tex and in HTML | ||
| 835 : | # The order of arguments is TeX, Latex2HTML, HTML | ||
| 836 : | sub PAR { MODES( TeX => '\\par ',Latex2HTML => '\\par ',HTML => '<P>' ); }; | ||
| 837 : | sub BR { MODES( TeX => '\\par\\noindent ',Latex2HTML => '\\par\\noindent ',HTML => '<BR>'); }; | ||
| 838 : | sub LQ { MODES( TeX => "``", Latex2HTML => '"', HTML => '"' ); }; | ||
| 839 : | sub RQ { MODES( TeX => "''", Latex2HTML => '"', HTML => '"' ); }; | ||
| 840 : | sub BM { MODES(TeX => '\\(', Latex2HTML => '\\(', HTML => ''); }; # begin math mode | ||
| 841 : | sub EM { MODES(TeX => '\\)', Latex2HTML => '\\)', HTML => ''); }; # end math mode | ||
| 842 : | sub BDM { MODES(TeX => '\\[', Latex2HTML => '\\[', HTML => '<P ALIGN=CENTER>'); }; #begin displayMath mode | ||
| 843 : | sub EDM { MODES(TeX => '\\]', Latex2HTML => '\\]', HTML => '</P>'); }; #end displayMath mode | ||
| 844 : | sub LTS { MODES(TeX => ' < ', Latex2HTML => ' \\lt ', HTML => '<'); }; | ||
| 845 : | sub GTS {MODES(TeX => ' > ', Latex2HTML => ' \\gt ', HTML => '>'); }; | ||
| 846 : | sub LTE { MODES(TeX => ' \\le ', Latex2HTML => ' \\le ', HTML => '<=' ); }; | ||
| 847 : | sub GTE { MODES(TeX => ' \\ge ', Latex2HTML => ' \\ge ', HTML => '>'); }; | ||
| 848 : | sub BEGIN_ONE_COLUMN { MODES(TeX => " \\end{multicols}\n", Latex2HTML => " ", HTML => " "); }; | ||
| 849 : | sub END_ONE_COLUMN { MODES(TeX => | ||
| 850 : | " \\begin{multicols}{2}\n\\columnwidth=\\linewidth\n", | ||
| 851 : | Latex2HTML => ' ', HTML => ' '); | ||
| 852 : | |||
| 853 : | }; | ||
| 854 : | sub SOLUTION_HEADING { MODES( TeX => '\\par {\\bf Solution:}', | ||
| 855 : | Latex2HTML => '\\par {\\bf Solution:}', | ||
| 856 : | HTML => '<P><B>Solution:</B>'); | ||
| 857 : | }; | ||
| 858 : | sub HINT_HEADING { MODES( TeX => "\\par {\\bf Hint:}", Latex2HTML => "\\par {\\bf Hint:}", HTML => "<P><B>Hint:</B>"); }; | ||
| 859 : | sub US { MODES(TeX => '\\_', Latex2HTML => '\\_', HTML => '_');}; # underscore, e.g. file${US}name | ||
| 860 : | sub SPACE { MODES(TeX => '\\ ', Latex2HTML => '\\ ', HTML => ' ');}; # force a space in latex, doesn't force extra space in html | ||
| 861 : | sub BBOLD { MODES(TeX => '{\\bf ', Latex2HTML => '{\\bf ', HTML => '<B>'); }; | ||
| 862 : | sub EBOLD { MODES( TeX => '}', Latex2HTML => '}',HTML => '</B>'); }; | ||
| 863 : | sub HR { MODES(TeX => '\\par\\hrulefill\\par ', Latex2HTML => '\\begin{rawhtml} <HR> \\end{rawhtml}', HTML => '<HR>'); }; | ||
| 864 : | sub LBRACE { MODES( TeX => '\{', Latex2HTML => '\\lbrace', HTML => '\{' , HTML_tth=> '\\lbrace' ); }; | ||
| 865 : | sub RBRACE { MODES( TeX => '\}', Latex2HTML => '\\rbrace', HTML => '\}' , HTML_tth=> '\\rbrace',); }; | ||
| 866 : | sub LB { MODES( TeX => '\{', Latex2HTML => '\\lbrace', HTML => '\{' , HTML_tth=> '\\lbrace' ); }; | ||
| 867 : | sub RB { MODES( TeX => '\}', Latex2HTML => '\\rbrace', HTML => '\}' , HTML_tth=> '\\rbrace',); }; | ||
| 868 : | sub DOLLAR { MODES( TeX => '\\$', Latex2HTML => '\\$', HTML => '$' ); }; | ||
| 869 : | sub PERCENT { MODES( TeX => '\\%', Latex2HTML => '\\%', HTML => '%' ); }; | ||
| 870 : | sub CARET { MODES( TeX => '\\^', Latex2HTML => '\\^', HTML => '^' ); }; | ||
| 871 : | sub PI {4*atan2(1,1);}; | ||
| 872 : | sub E {exp(1);}; | ||
| 873 : | |||
| 874 : | ############################################################### | ||
| 875 : | ## Evaluation macros | ||
| 876 : | |||
| 877 : | |||
| 878 : | =head2 TEXT macros | ||
| 879 : | |||
| 880 : | Usage: | ||
| 881 : | TEXT(@text); | ||
| 882 : | |||
| 883 : | This is the simplest way to print text from a problem. The strings in the array C<@text> are concatenated | ||
| 884 : | with spaces between them and printed out in the text of the problem. The text is not processed in any other way. | ||
| 885 : | C<TEXT> is defined in PG.pl. | ||
| 886 : | |||
| 887 : | Usage: | ||
| 888 : | BEGIN_TEXT | ||
| 889 : | text..... | ||
| 890 : | END_TEXT | ||
| 891 : | |||
| 892 : | This is the most common way to enter text into the problem. All of the text between BEGIN_TEXT and END_TEXT | ||
| 893 : | is processed by the C<EV3> macro described below and then printed using the C<TEXT> command. The two key words | ||
| 894 : | must appear on lines by themselves. The preprocessing that makes this construction work is done in F<PGtranslator.pm>. | ||
| 895 : | See C<EV3> below for details on the processing. | ||
| 896 : | |||
| 897 : | |||
| 898 : | =cut | ||
| 899 : | |||
| 900 : | =head2 Evaluation macros | ||
| 901 : | |||
| 902 : | =head3 EV3 | ||
| 903 : | |||
| 904 : | TEXT(EV3("This is a formulat \( \int_0^5 x^2 \, dx \) "); | ||
| 905 : | TEXT(EV3(@text)); | ||
| 906 : | |||
| 907 : | TEXT(EV3(<<'END_TEXT')); | ||
| 908 : | text stuff... | ||
| 909 : | END_TEXT | ||
| 910 : | |||
| 911 : | |||
| 912 : | The BEGIN_TEXT/END_TEXT construction is translated into the construction above by PGtranslator.pm. END_TEXT must appear | ||
| 913 : | on a line by itself and be left justified. (The << construction is known as a "here document" in UNIX and in PERL.) | ||
| 914 : | |||
| 915 : | The single quotes around END_TEXT mean that no automatic interpolation of variables takes place in the text. | ||
| 916 : | Using EV3 with strings which have been evaluated by double quotes may lead to unexpected results. | ||
| 917 : | |||
| 918 : | |||
| 919 : | The evaluation macro E3 first evaluates perl code inside the braces: C<\{ code \}>. | ||
| 920 : | Any perl statment can be put inside the braces. The | ||
| 921 : | result of the evaluation (i.e. the last statement evaluated) replaces the C<\{ code \}> construction. | ||
| 922 : | |||
| 923 : | Next interpolation of all variables (e.g. C<$var or @array> ) is performed. | ||
| 924 : | |||
| 925 : | Then mathematical formulas in TeX are evaluated within the | ||
| 926 : | C<\( tex math mode \)> and | ||
| 927 : | C<\[ tex display math mode \] > | ||
| 928 : | constructions, in that order: | ||
| 929 : | |||
| 930 : | =head3 FEQ | ||
| 931 : | |||
| 932 : | FEQ($string); # processes and outputs the string | ||
| 933 : | |||
| 934 : | |||
| 935 : | The mathematical formulas are run through the macro C<FEQ> (Format EQuations) which performs | ||
| 936 : | several substitutions (see below). | ||
| 937 : | In C<HTML_tth> mode the resulting code is processed by tth to obtain an HTML version | ||
| 938 : | of the formula. (In the future processing by WebEQ may be added here as another option.) | ||
| 939 : | The Latex2HTML mode does nothing | ||
| 940 : | at this stage; it creates the entire problem before running it through | ||
| 941 : | TeX and creating the GIF images of the equations. | ||
| 942 : | |||
| 943 : | The resulting string is output (and usually fed into TEXT to be printed in the problem). | ||
| 944 : | |||
| 945 : | Usage: | ||
| 946 : | |||
| 947 : | $string2 = FEQ($string1); | ||
| 948 : | |||
| 949 : | This is a filter which is used to format equations by C<EV2> and C<EV3>, but can also be used on its own. It is best | ||
| 950 : | understood with an example. | ||
| 951 : | |||
| 952 : | $string1 = "${a}x^2 + ${b}x + {$c:%.1f}"; $a = 3;, $b = -2; $c = -7.345; | ||
| 953 : | |||
| 954 : | when interpolated becomes: | ||
| 955 : | |||
| 956 : | $string1 = '3x^2 + -2x + {-7.345:%0.1f} | ||
| 957 : | |||
| 958 : | FEQ first changes the number of decimal places displayed, so that the last term becomes -7.3 Then it removes the | ||
| 959 : | extraneous plus and minus signs, so that the final result is what you want: | ||
| 960 : | |||
| 961 : | $string2 = '3x^2 - 2x -7.3'; | ||
| 962 : | |||
| 963 : | (The %0.1f construction | ||
| 964 : | is the same formatting convention used by Perl and nearly identical to the one used by the C printf statement. Some common | ||
| 965 : | usage: %0.3f 3 decimal places, fixed notation; %0.3e 3 significant figures exponential notation; %0.3g uses either fixed | ||
| 966 : | or exponential notation depending on the size of the number.) | ||
| 967 : | |||
| 968 : | Two additional legacy formatting constructions are also supported: | ||
| 969 : | |||
| 970 : | C<?{$c:%0.3f} > will give a number with 3 decimal places and a negative | ||
| 971 : | sign if the number is negative, no sign if the number is positive. | ||
| 972 : | |||
| 973 : | C<!{$c:%0.3f}> determines the sign and prints it | ||
| 974 : | whether the number is positive or negative. | ||
| 975 : | |||
| 976 : | =head3 EV2 | ||
| 977 : | |||
| 978 : | TEXT(EV2(@text)); | ||
| 979 : | |||
| 980 : | TEXT(EV2(<<END_OF_TEXT)); | ||
| 981 : | text stuff... | ||
| 982 : | END_OF_TEXT | ||
| 983 : | |||
| 984 : | This is a precursor to EV3. In this case the constants are interpolated first, before the evaluation of the \{ ...code...\} | ||
| 985 : | construct. This can lead to unexpected results. For example C<\{ join(" ", @text) \}> with C<@text = ("Hello","World);> becomes, | ||
| 986 : | after interpolation, C<\{ join(" ",Hello World) \}> which then causes an error when evaluated because Hello is a bare word. | ||
| 987 : | C<EV2> can still be useful if you allow for this, and in particular it works on double quoted strings, which lead to | ||
| 988 : | unexpected results with C<EV3>. Using single quoted strings with C<EV2> may lead to unexpected results. | ||
| 989 : | |||
| 990 : | The unexpected results have to do with the number of times backslashed constructions have to be escaped. It's quite messy. For | ||
| 991 : | more details get a good Perl book and then read the code. :-) | ||
| 992 : | |||
| 993 : | |||
| 994 : | |||
| 995 : | |||
| 996 : | =cut | ||
| 997 : | |||
| 998 : | |||
| 999 : | sub ev_substring { | ||
| 1000 : | my $string = shift; | ||
| 1001 : | my $start_delim = shift; | ||
| 1002 : | my $end_delim = shift; | ||
| 1003 : | my $actionRef = shift; | ||
| 1004 : | my ($eval_out,$PG_eval_errors,$PG_full_error_report)=(); | ||
| 1005 : | my $out = ""; | ||
| 1006 : | while ($string) { | ||
| 1007 : | if ($string =~ /\Q$start_delim\E/s) { | ||
| 1008 : | #print "$start_delim $end_delim evaluating_substring=$string<BR>"; | ||
| 1009 : | $string =~ s/^(.*?)\Q$start_delim\E//s; # get string up to next \{ ---treats string as a single line, ignoring returns | ||
| 1010 : | $out .= $1; | ||
| 1011 : | #print "$start_delim $end_delim substring_out=$out<BR>"; | ||
| 1012 : | $string =~ s/^(.*?)\Q$end_delim\E//s; # get perl code up to \} ---treats string as a single line, ignoring returns | ||
| 1013 : | #print "$start_delim $end_delim evaluate_string=$1<BR>"; | ||
| 1014 : | ($eval_out,$PG_eval_errors,$PG_full_error_report) = &$actionRef($1); | ||
| 1015 : | $eval_out = "$start_delim $eval_out $end_delim" if $PG_full_error_report; | ||
| 1016 : | $out = $out . $eval_out; | ||
| 1017 : | #print "$start_delim $end_delim new substring_out=$out<BR><p><BR>"; | ||
| 1018 : | $out .="$main::PAR ERROR $0 in ev_substring, PGbasicmacros.pl:$main::PAR <PRE> $@ </PRE>$main::PAR" if $@; | ||
| 1019 : | } | ||
| 1020 : | else { | ||
| 1021 : | $out .= $string; # flush the last part of the string | ||
| 1022 : | last; | ||
| 1023 : | } | ||
| 1024 : | |||
| 1025 : | } | ||
| 1026 : | $out; | ||
| 1027 : | } | ||
| 1028 : | sub safe_ev { | ||
| 1029 : | my ($out,$PG_eval_errors,$PG_full_error_report) = &old_safe_ev; # process input by old_safe_ev first | ||
| 1030 : | $out =~s/\\/\\\\/g; # protect any new backslashes introduced. | ||
| 1031 : | ($out,$PG_eval_errors,$PG_full_error_report) | ||
| 1032 : | } | ||
| 1033 : | |||
| 1034 : | sub old_safe_ev { | ||
| 1035 : | my $in = shift; | ||
| 1036 : | my ($out,$PG_eval_errors,$PG_full_error_report) = PG_restricted_eval("$in;"); | ||
| 1037 : | # the addition of the ; seems to provide better error reporting | ||
| 1038 : | if ($PG_eval_errors) { | ||
| 1039 : | my @errorLines = split("\n",$PG_eval_errors); | ||
| 1040 : | #$out = "<PRE>$main::PAR % ERROR in $0:old_safe_ev, PGbasicmacros.pl: $main::PAR % There is an error occuring inside evaluation brackets \\{ ...code... \\} $main::BR % somewhere in an EV2 or EV3 or BEGIN_TEXT block. $main::BR % Code evaluated:$main::BR $in $main::BR % $main::BR % $errorLines[0]\n % $errorLines[1]$main::BR % $main::BR % $main::BR </PRE> "; | ||
| 1041 : | warn " ERROR in old_safe_ev, PGbasicmacros.pl: <PRE> | ||
| 1042 : | ## There is an error occuring inside evaluation brackets \\{ ...code... \\} | ||
| 1043 : | ## somewhere in an EV2 or EV3 or BEGIN_TEXT block. | ||
| 1044 : | ## Code evaluated: | ||
| 1045 : | ## $in | ||
| 1046 : | ##" .join("\n ", @errorLines). " | ||
| 1047 : | ##</PRE>$main::BR | ||
| 1048 : | "; | ||
| 1049 : | $out ="$main::PAR $main::BBOLD $in $main::EBOLD $main::PAR"; | ||
| 1050 : | |||
| 1051 : | |||
| 1052 : | } | ||
| 1053 : | |||
| 1054 : | ($out,$PG_eval_errors,$PG_full_error_report); | ||
| 1055 : | } | ||
| 1056 : | |||
| 1057 : | sub FEQ { # Format EQuations | ||
| 1058 : | my $in = shift; | ||
| 1059 : | # formatting numbers -- the ?{} and !{} constructions | ||
| 1060 : | $in =~s/\?\s*\{([.\-\$\w\d]+):?([%.\da-z]*)\}/${ \( &sspf($1,$2) )}/g; | ||
| 1061 : | $in =~s/\!\s*\{([.\-\$\w\d]+):?([%.\da-z]*)\}/${ \( &spf($1,$2) )}/g; | ||
| 1062 : | |||
| 1063 : | # more formatting numbers -- {number:format} constructions | ||
| 1064 : | $in =~ s/\{(\s*[\+\-\d\.]+[eE]*[\+\-]*\d*):(\%\d*.\d*\w)}/${ \( &spf($1,$2) )}/g; | ||
| 1065 : | $in =~ s/\+\s*\-/ - /g; | ||
| 1066 : | $in =~ s/\-\s*\+/ - /g; | ||
| 1067 : | $in =~ s/\+\s*\+/ + /g; | ||
| 1068 : | $in =~ s/\-\s*\-/ + /g; | ||
| 1069 : | $in; | ||
| 1070 : | } | ||
| 1071 : | |||
| 1072 : | sub math_ev3 { | ||
| 1073 : | my $in = shift; #print "in=$in<BR>"; | ||
| 1074 : | my ($out,$PG_eval_errors,$PG_full_error_report); | ||
| 1075 : | $in = FEQ($in); | ||
| 1076 : | $in =~ s/%/\\%/g; # % causes trouble in TeX and HTML_tth it usually (always?) indicates an error, not comment | ||
| 1077 : | return("$main::BM $in $main::EM") unless ($main::displayMode eq 'HTML_tth'); | ||
| 1078 : | $in = "\\(" . $in . "\\)"; | ||
| 1079 : | $out = tth($in); | ||
| 1080 : | ($out,$PG_eval_errors,$PG_full_error_report); | ||
| 1081 : | |||
| 1082 : | } | ||
| 1083 : | |||
| 1084 : | sub display_math_ev3 { | ||
| 1085 : | my $in = shift; #print "in=$in<BR>"; | ||
| 1086 : | my ($out,$PG_eval_errors,$PG_full_error_report); | ||
| 1087 : | $in = FEQ($in); | ||
| 1088 : | $in =~ s/%/\\%/g; | ||
| 1089 : | return("$main::BDM $in $main::EDM") unless $main::displayMode eq 'HTML_tth' ; | ||
| 1090 : | $in = "\\[" . $in . "\\]"; | ||
| 1091 : | $out =tth($in); | ||
| 1092 : | ($out,$PG_eval_errors,$PG_full_error_report); | ||
| 1093 : | } | ||
| 1094 : | |||
| 1095 : | sub EV2 { | ||
| 1096 : | my $string = join(" ",@_); | ||
| 1097 : | # evaluate code inside of \{ \} (no nesting allowed) | ||
| 1098 : | $string = ev_substring($string,"\\{","\\}",\&old_safe_ev); | ||
| 1099 : | $string = ev_substring($string,"\\<","\\>",\&old_safe_ev); | ||
| 1100 : | $string = ev_substring($string,"\\(","\\)",\&math_ev3); | ||
| 1101 : | $string = ev_substring($string,"\\[","\\]",\&display_math_ev3); | ||
| 1102 : | # macros for displaying math | ||
| 1103 : | $string =~ s/\\\(/$main::BM/g; | ||
| 1104 : | $string =~ s/\\\)/$main::EM/g; | ||
| 1105 : | $string =~ s/\\\[/$main::BDM/g; | ||
| 1106 : | $string =~ s/\\\]/$main::EDM/g; | ||
| 1107 : | $string; | ||
| 1108 : | } | ||
| 1109 : | |||
| 1110 : | sub EV3{ | ||
| 1111 : | my $string = join(" ",@_); | ||
| 1112 : | # evaluate code inside of \{ \} (no nesting allowed) | ||
| 1113 : | $string = ev_substring($string,"\\\\{","\\\\}",\&safe_ev); # handles \{ \} in single quoted strings of PG files | ||
| 1114 : | # interpolate variables | ||
| 1115 : | my ($evaluated_string,$PG_eval_errors,$PG_full_errors) = PG_restricted_eval("<<END_OF_EVALUATION_STRING\n$string\nEND_OF_EVALUATION_STRING\n"); | ||
| 1116 : | if ($PG_eval_errors) { | ||
| 1117 : | my @errorLines = split("\n",$PG_eval_errors); | ||
| 1118 : | $string =~ s/</</g; $string =~ s/>/>/g; | ||
| 1119 : | $evaluated_string = "<PRE>$main::PAR % ERROR in $0:EV3, PGbasicmacros.pl: $main::PAR % There is an error occuring in the following code:$main::BR $string $main::BR % $main::BR % $errorLines[0]\n % $errorLines[1]$main::BR % $main::BR % $main::BR </PRE> "; | ||
| 1120 : | $@=""; | ||
| 1121 : | } | ||
| 1122 : | $string = $evaluated_string; | ||
| 1123 : | $string = ev_substring($string,"\\(","\\)",\&math_ev3); | ||
| 1124 : | $string = ev_substring($string,"\\[","\\]",\&display_math_ev3); | ||
| 1125 : | $string; | ||
| 1126 : | } | ||
| 1127 : | |||
| 1128 : | =head2 Formatting macros | ||
| 1129 : | |||
| 1130 : | beginproblem() # generates text listing number and the point value of | ||
| 1131 : | # the problem. It will also print the file name containing | ||
| 1132 : | # the problem for users listed in the PRINT_FILE_NAMES_FOR PG_environment | ||
| 1133 : | # variable. | ||
| 1134 : | OL(@array) # formats the array as an Ordered List ( <OL> </OL> ) enumerated by letters. | ||
| 1135 : | |||
| 1136 : | htmlLink($url, $text) | ||
| 1137 : | # Places a reference to the URL with the specified text in the problem. | ||
| 1138 : | # A common usage is \{ htmlLink(alias('prob1_help.html') \}, 'for help') | ||
| 1139 : | # where alias finds the full address of the prob1_help.html file in the same directory | ||
| 1140 : | # as the problem file | ||
| 1141 : | appletLink($url, $parameters) | ||
| 1142 : | # For example | ||
| 1143 : | gage | 5 | # appletLink(q! archive="http: //webwork.math.rochester.edu/gage/xFunctions/xFunctions.zip" |
| 1144 : | code="xFunctionsLauncher.class" width=100 height=14!, | ||
| 1145 : | sam | 2 | " parameter text goes here") |
| 1146 : | # will link to xFunctions. | ||
| 1147 : | |||
| 1148 : | low level: | ||
| 1149 : | |||
| 1150 : | spf($number, $format) # prints the number with the given format | ||
| 1151 : | sspf($number, $format) # prints the number with the given format, always including a sign. | ||
| 1152 : | protect_underbar($string) # protects the underbar (class_name) in strings which may have to pass through TeX. | ||
| 1153 : | |||
| 1154 : | =cut | ||
| 1155 : | |||
| 1156 : | sub beginproblem { | ||
| 1157 : | my $out = ""; | ||
| 1158 : | my $TeXFileName = protect_underbar($main::fileName); | ||
| 1159 : | my $l2hFileName = protect_underbar($main::fileName); | ||
| 1160 : | my %inlist; | ||
| 1161 : | my $points ='pts'; | ||
| 1162 : | $points = 'pt' if $main::problemValue == 1; | ||
| 1163 : | ## Prepare header for the problem | ||
| 1164 : | grep($inlist{$_}++,@{ $envir{'PRINT_FILE_NAMES_FOR'} }); | ||
| 1165 : | if ( defined($inlist{$main::studentLogin}) and ($inlist{$main::studentLogin} > 0) ) { | ||
| 1166 : | $out = &M3("\n\n\\medskip\\hrule\\smallskip\\par{\\bf ${main::probNum}.{\\footnotesize ($main::problemValue $points) $TeXFileName}}\\newline ", | ||
| 1167 : | " \\begin{rawhtml} ($main::problemValue $points) <B>$l2hFileName</B><BR>\\end{rawhtml}", | ||
| 1168 : | "($main::problemValue $points) <B>$main::fileName</B><BR>" | ||
| 1169 : | ); | ||
| 1170 : | } else { | ||
| 1171 : | $out = &M3("\n\n\\smallskip\\hrule\\smallskip\\par{\\bf ${main::probNum}.}($main::problemValue $points) ", | ||
| 1172 : | "($main::problemValue $points) ", | ||
| 1173 : | "($main::problemValue $points) " | ||
| 1174 : | ); | ||
| 1175 : | } | ||
| 1176 : | $out; | ||
| 1177 : | |||
| 1178 : | } | ||
| 1179 : | |||
| 1180 : | # kludge to clean up path names | ||
| 1181 : | ## allow underscore character in set and section names and also allows line breaks at / | ||
| 1182 : | sub protect_underbar { | ||
| 1183 : | my $in = shift; | ||
| 1184 : | if ($main::displayMode eq 'TeX') { | ||
| 1185 : | |||
| 1186 : | $in =~ s|_|\\\_|g; | ||
| 1187 : | $in =~ s|/|\\\-/|g; # allows an optional hyphenation of the path (in tex) | ||
| 1188 : | } | ||
| 1189 : | $in; | ||
| 1190 : | } | ||
| 1191 : | |||
| 1192 : | |||
| 1193 : | # An example of a macro which prints out a list (with letters) | ||
| 1194 : | sub OL { | ||
| 1195 : | my(@array) = @_; | ||
| 1196 : | my $i = 0; | ||
| 1197 : | my $out= &M3( | ||
| 1198 : | "\\begin{enumerate}\n", | ||
| 1199 : | " \\begin{rawhtml} <OL TYPE=\"A\" VALUE=\"1\"> \\end{rawhtml} ", | ||
| 1200 : | "<OL TYPE=\"A\" VALUE=\"1\">\n" | ||
| 1201 : | ) ; | ||
| 1202 : | my $elem; | ||
| 1203 : | foreach $elem (@array) { | ||
| 1204 : | $out .= &M3( | ||
| 1205 : | "\\item[$main::ALPHABET[$i].] $elem\n", | ||
| 1206 : | " \\begin{rawhtml} <LI> \\end{rawhtml} $elem ", | ||
| 1207 : | "<LI> $elem\n" | ||
| 1208 : | ) ; | ||
| 1209 : | $i++; | ||
| 1210 : | } | ||
| 1211 : | $out .= &M3( | ||
| 1212 : | "\\end{enumerate}\n", | ||
| 1213 : | " \\begin{rawhtml} </OL>\n \\end{rawhtml} ", | ||
| 1214 : | "</OL>\n" | ||
| 1215 : | ) ; | ||
| 1216 : | } | ||
| 1217 : | |||
| 1218 : | sub htmlLink { | ||
| 1219 : | my $url = shift; | ||
| 1220 : | my $text = shift; | ||
| 1221 : | my $options = shift; | ||
| 1222 : | $options = "" unless defined($options); | ||
| 1223 : | M3( "{\\bf \\underline{$text} }", | ||
| 1224 : | "\\begin{rawhtml} <A HREF=\"$url\" $options> $text </A>\\end{rawhtml}", | ||
| 1225 : | "<A HREF=\"$url\" $options> $text </A>" | ||
| 1226 : | ); | ||
| 1227 : | } | ||
| 1228 : | sub appletLink { | ||
| 1229 : | my $url = shift; | ||
| 1230 : | my $options = shift; | ||
| 1231 : | $options = "" unless defined($options); | ||
| 1232 : | M3( "{\\bf \\underline{APPLET} }", | ||
| 1233 : | "\\begin{rawhtml} <APPLET $url> $options </APPLET>\\end{rawhtml}", | ||
| 1234 : | "<APPLET $url> $options </APPLET>" | ||
| 1235 : | ); | ||
| 1236 : | } | ||
| 1237 : | sub spf { | ||
| 1238 : | my($number,$format) = @_; # attention, the order of format and number are reversed | ||
| 1239 : | $format = "%4.3g" unless $format; # default value for format | ||
| 1240 : | sprintf($format, $number); | ||
| 1241 : | } | ||
| 1242 : | sub sspf { | ||
| 1243 : | my($number,$format) = @_; # attention, the order of format and number are reversed | ||
| 1244 : | $format = "%4.3g" unless $format; # default value for format | ||
| 1245 : | my $sign = $number>=0 ? " + " : " - "; | ||
| 1246 : | $number = $number>=0 ? $number : -$number; | ||
| 1247 : | $sign .sprintf($format, $number); | ||
| 1248 : | } | ||
| 1249 : | |||
| 1250 : | =head2 Sorting and other list macros | ||
| 1251 : | |||
| 1252 : | |||
| 1253 : | |||
| 1254 : | Usage: | ||
| 1255 : | lex_sort(@list); # outputs list in lexigraphic (alphabetical) order | ||
| 1256 : | num_sort(@list); # outputs list in numerical order | ||
| 1257 : | uniq( @list); # outputs a list with no duplicates. Order is unspecified. | ||
| 1258 : | |||
| 1259 : | PGsort( \&sort_subroutine, @list); | ||
| 1260 : | # &sort_subroutine defines order. It's output must be -1,0 or 1. | ||
| 1261 : | |||
| 1262 : | =cut | ||
| 1263 : | |||
| 1264 : | # uniq gives unique elements of a list: | ||
| 1265 : | sub uniq { | ||
| 1266 : | my (@in) =@_; | ||
| 1267 : | my %temp = (); | ||
| 1268 : | while (@in) { | ||
| 1269 : | $temp{shift(@in)}++; | ||
| 1270 : | } | ||
| 1271 : | my @out = keys %temp; # sort is causing trouble with Safe.?? | ||
| 1272 : | @out; | ||
| 1273 : | } | ||
| 1274 : | |||
| 1275 : | sub lex_sort { | ||
| 1276 : | PGsort sub {$_[0] cmp $_[1]}, @_; | ||
| 1277 : | } | ||
| 1278 : | sub num_sort { | ||
| 1279 : | PGsort sub {$_[0] <=> $_[1]}, @_; | ||
| 1280 : | } | ||
| 1281 : | |||
| 1282 : | |||
| 1283 : | =head2 Macros for handling tables | ||
| 1284 : | |||
| 1285 : | Usage: | ||
| 1286 : | begintable( number_of_columns_in_table) | ||
| 1287 : | row(@dataelements) | ||
| 1288 : | endtable() | ||
| 1289 : | |||
| 1290 : | Example of useage: | ||
| 1291 : | |||
| 1292 : | BEGIN_TEXT | ||
| 1293 : | This problem tests calculating new functions from old ones:$BR | ||
| 1294 : | From the table below calculate the quantities asked for:$BR | ||
| 1295 : | \{begintable(scalar(@firstrow)+1)\} | ||
| 1296 : | \{row(" \(x\) ",@firstrow)\} | ||
| 1297 : | \{row(" \(f(x)\) ", @secondrow)\} | ||
| 1298 : | \{row(" \(g(x)\) ", @thirdrow)\} | ||
| 1299 : | \{row(" \(f'(x)\) ", @fourthrow)\} | ||
| 1300 : | \{row(" \(g'(x)\) ", @fifthrow)\} | ||
| 1301 : | \{endtable()\} | ||
| 1302 : | |||
| 1303 : | (The arrays contain numbers which are placed in the table.) | ||
| 1304 : | |||
| 1305 : | END_TEXT | ||
| 1306 : | |||
| 1307 : | =cut | ||
| 1308 : | |||
| 1309 : | sub begintable { | ||
| 1310 : | my ($number)=shift; #number of columns in table | ||
| 1311 : | my %options = @_; | ||
| 1312 : | warn "begintable(cols) requires a number indicating the number of columns" unless defined($number); | ||
| 1313 : | my $out = ""; | ||
| 1314 : | if ($main::displayMode eq 'TeX') { | ||
| 1315 : | $out .= "\n\\par\\smallskip\\begin{center}\\begin{tabular}{" . "|c" x $number . "|} \\hline\n"; | ||
| 1316 : | } | ||
| 1317 : | elsif ($main::displayMode eq 'Latex2HTML') { | ||
| 1318 : | $out .= "\n\\begin{rawhtml} <TABLE , BORDER=1>\n\\end{rawhtml}"; | ||
| 1319 : | } | ||
| 1320 : | elsif ($main::displayMode eq 'HTML' || $main::displayMode eq 'HTML_tth') { | ||
| 1321 : | $out .= "<TABLE BORDER=1>\n" | ||
| 1322 : | } | ||
| 1323 : | else { | ||
| 1324 : | $out = "Error: PGchoicemacros: begintable: Unknown displayMode: $main::displayMode.\n"; | ||
| 1325 : | } | ||
| 1326 : | $out; | ||
| 1327 : | } | ||
| 1328 : | |||
| 1329 : | sub endtable { | ||
| 1330 : | my $out = ""; | ||
| 1331 : | if ($main::displayMode eq 'TeX') { | ||
| 1332 : | $out .= "\n\\end {tabular}\\end{center}\\par\\smallskip\n"; | ||
| 1333 : | } | ||
| 1334 : | elsif ($main::displayMode eq 'Latex2HTML') { | ||
| 1335 : | $out .= "\n\\begin{rawhtml} </TABLE >\n\\end{rawhtml}"; | ||
| 1336 : | } | ||
| 1337 : | elsif ($main::displayMode eq 'HTML' || $main::displayMode eq 'HTML_tth') { | ||
| 1338 : | $out .= "</TABLE>\n"; | ||
| 1339 : | } | ||
| 1340 : | else { | ||
| 1341 : | $out = "Error: PGchoicemacros: endtable: Unknown displayMode: $main::displayMode.\n"; | ||
| 1342 : | } | ||
| 1343 : | $out; | ||
| 1344 : | } | ||
| 1345 : | |||
| 1346 : | |||
| 1347 : | sub row { | ||
| 1348 : | my @elements = @_; | ||
| 1349 : | my $out = ""; | ||
| 1350 : | if ($main::displayMode eq 'TeX') { | ||
| 1351 : | while (@elements) { | ||
| 1352 : | $out .= shift(@elements) . " &"; | ||
| 1353 : | } | ||
| 1354 : | chop($out); # remove last & | ||
| 1355 : | $out .= "\\\\ \\hline \n"; | ||
| 1356 : | # carriage returns must be added manually for tex | ||
| 1357 : | } | ||
| 1358 : | elsif ($main::displayMode eq 'Latex2HTML') { | ||
| 1359 : | $out .= "\n\\begin{rawhtml}\n<TR>\n\\end{rawhtml}\n"; | ||
| 1360 : | while (@elements) { | ||
| 1361 : | $out .= " \n\\begin{rawhtml}\n<TD> \n\\end{rawhtml}\n" . shift(@elements) . " \n\\begin{rawhtml}\n</TD> \n\\end{rawhtml}\n"; | ||
| 1362 : | } | ||
| 1363 : | $out .= " \n\\begin{rawhtml}\n</TR> \n\\end{rawhtml}\n"; | ||
| 1364 : | } | ||
| 1365 : | elsif ($main::displayMode eq 'HTML' || $main::displayMode eq 'HTML_tth') { | ||
| 1366 : | $out .= "<TR>\n"; | ||
| 1367 : | while (@elements) { | ||
| 1368 : | $out .= "<TD>" . shift(@elements) . "</TD>"; | ||
| 1369 : | } | ||
| 1370 : | $out .= "\n</TR>\n"; | ||
| 1371 : | } | ||
| 1372 : | else { | ||
| 1373 : | $out = "Error: PGchoicemacros: row: Unknown displayMode: $main::displayMode.\n"; | ||
| 1374 : | } | ||
| 1375 : | $out; | ||
| 1376 : | } | ||
| 1377 : | |||
| 1378 : | =head2 Macros for displaying static images | ||
| 1379 : | |||
| 1380 : | Usage: | ||
| 1381 : | $string = image($image, width => 100, height => 100, tex_size => 800) | ||
| 1382 : | $string = image([$image1, $image2], width => 100, height => 100, tex_size => 800) | ||
| 1383 : | $string = caption($string); | ||
| 1384 : | $string = imageRow([$image1, $image2 ], [$caption1, $caption2]); | ||
| 1385 : | # produces a complete table with rows of pictures. | ||
| 1386 : | |||
| 1387 : | |||
| 1388 : | =cut | ||
| 1389 : | |||
| 1390 : | # More advanced macros | ||
| 1391 : | sub image { | ||
| 1392 : | my $image_ref = shift; | ||
| 1393 : | my @opt = @_; | ||
| 1394 : | unless (scalar(@opt) % 2 == 0 ) { | ||
| 1395 : | warn "ERROR in image macro. A list of macros must be inclosed in square brackets."; | ||
| 1396 : | } | ||
| 1397 : | my %in_options = @opt; | ||
| 1398 : | my %known_options = ( width => 100, | ||
| 1399 : | height => 100, | ||
| 1400 : | tex_size => 800 | ||
| 1401 : | ); | ||
| 1402 : | # # handle options | ||
| 1403 : | my %out_options = %known_options; | ||
| 1404 : | foreach my $opt_name (keys %in_options) { | ||
| 1405 : | if ( exists( $known_options{$opt_name} ) ) { | ||
| 1406 : | $out_options{$opt_name} = $in_options{$opt_name} if exists( $in_options{$opt_name} ) ; | ||
| 1407 : | } else { | ||
| 1408 : | die "Option $opt_name not defined for image. " . | ||
| 1409 : | "Default options are:<BR> ", display_options2(%known_options); | ||
| 1410 : | |||
| 1411 : | } | ||
| 1412 : | } | ||
| 1413 : | my $width = $out_options{width}; | ||
| 1414 : | my $height = $out_options{height}; | ||
| 1415 : | my $tex_size = $out_options{tex_size}; | ||
| 1416 : | my $width_ratio = $tex_size*(.001); | ||
| 1417 : | my @image_list = (); | ||
| 1418 : | |||
| 1419 : | if (ref($image_ref) =~ /ARRAY/ ) { | ||
| 1420 : | @image_list = @{$image_ref}; | ||
| 1421 : | } else { | ||
| 1422 : | push(@image_list,$image_ref); | ||
| 1423 : | } | ||
| 1424 : | my @output_list = (); | ||
| 1425 : | while(@image_list) { | ||
| 1426 : | |||
| 1427 : | my $imageURL = alias(shift @image_list); | ||
| 1428 : | my $out=""; | ||
| 1429 : | |||
| 1430 : | |||
| 1431 : | if ($main::displayMode eq 'TeX') { | ||
| 1432 : | $out = qq!\\includegraphics[width=$width_ratio\\linewidth]{$imageURL}\n ! | ||
| 1433 : | } | ||
| 1434 : | elsif ($main::displayMode eq 'Latex2HTML') { | ||
| 1435 : | $out = qq!\\begin{rawhtml}\n<A HREF= "$imageURL" TARGET="ZOOM"><IMG SRC="$imageURL" WIDTH="$width" HEIGHT="$height"></A>\n | ||
| 1436 : | \\end{rawhtml}\n ! | ||
| 1437 : | } | ||
| 1438 : | elsif ($main::displayMode eq 'HTML' || $main::displayMode eq 'HTML_tth') { | ||
| 1439 : | $out = qq!<A HREF= "$imageURL" TARGET="ZOOM"><IMG SRC="$imageURL" WIDTH="$width" HEIGHT="$height"></A> | ||
| 1440 : | ! | ||
| 1441 : | } | ||
| 1442 : | else { | ||
| 1443 : | $out = "Error: PGchoicemacros: image: Unknown displayMode: $main::displayMode.\n"; | ||
| 1444 : | } | ||
| 1445 : | push(@output_list, $out); | ||
| 1446 : | } | ||
| 1447 : | wantarray ? @output_list : $output_list[0] ; | ||
| 1448 : | } | ||
| 1449 : | |||
| 1450 : | # This is legacy code. | ||
| 1451 : | sub images { | ||
| 1452 : | my @in = @_; | ||
| 1453 : | my @outlist = (); | ||
| 1454 : | while (@in) { | ||
| 1455 : | push(@outlist,&image( shift(@in) ) ); | ||
| 1456 : | } | ||
| 1457 : | @outlist; | ||
| 1458 : | } | ||
| 1459 : | |||
| 1460 : | |||
| 1461 : | sub caption { | ||
| 1462 : | my ($out) = @_; | ||
| 1463 : | $out = " $out \n" if $main::displayMode eq 'TeX'; | ||
| 1464 : | $out = " $out " if $main::displayMode eq 'HTML'; | ||
| 1465 : | $out = " $out " if $main::displayMode eq 'HTML_tth'; | ||
| 1466 : | $out = " $out " if $main::displayMode eq 'Latex2HTML'; | ||
| 1467 : | $out; | ||
| 1468 : | } | ||
| 1469 : | |||
| 1470 : | sub captions { | ||
| 1471 : | my @in = @_; | ||
| 1472 : | my @outlist = (); | ||
| 1473 : | while (@in) { | ||
| 1474 : | push(@outlist,&caption( shift(@in) ) ); | ||
| 1475 : | } | ||
| 1476 : | @outlist; | ||
| 1477 : | } | ||
| 1478 : | |||
| 1479 : | sub imageRow { | ||
| 1480 : | |||
| 1481 : | my $pImages = shift; | ||
| 1482 : | my $pCaptions=shift; | ||
| 1483 : | my $out = ""; | ||
| 1484 : | my @images = @$pImages; | ||
| 1485 : | my @captions = @$pCaptions; | ||
| 1486 : | my $number = @images; | ||
| 1487 : | # standard options | ||
| 1488 : | my %options = ( 'tex_size' => 200, # width for fitting 4 across | ||
| 1489 : | 'height' => 100, | ||
| 1490 : | 'width' => 100, | ||
| 1491 : | @_ # overwrite any default options | ||
| 1492 : | ); | ||
| 1493 : | |||
| 1494 : | if ($main::displayMode eq 'TeX') { | ||
| 1495 : | $out .= "\n\\par\\smallskip\\begin{center}\\begin{tabular}{" . "|c" x $number . "|} \\hline\n"; | ||
| 1496 : | while (@images) { | ||
| 1497 : | $out .= &image( shift(@images),%options ) . '&'; | ||
| 1498 : | } | ||
| 1499 : | chop($out); | ||
| 1500 : | $out .= "\\\\ \\hline \n"; | ||
| 1501 : | while (@captions) { | ||
| 1502 : | $out .= &caption( shift(@captions) ) . '&'; | ||
| 1503 : | } | ||
| 1504 : | chop($out); | ||
| 1505 : | $out .= "\\\\ \\hline \n\\end {tabular}\\end{center}\\par\\smallskip\n"; | ||
| 1506 : | } elsif ($main::displayMode eq 'Latex2HTML'){ | ||
| 1507 : | |||
| 1508 : | $out .= "\n\\begin{rawhtml} <TABLE BORDER=1><TR>\n\\end{rawhtml}\n"; | ||
| 1509 : | while (@images) { | ||
| 1510 : | $out .= "\n\\begin{rawhtml} <TD>\n\\end{rawhtml}\n" . &image( shift(@images),%options ) | ||
| 1511 : | . "\n\\begin{rawhtml} </TD>\n\\end{rawhtml}\n" ; | ||
| 1512 : | } | ||
| 1513 : | |||
| 1514 : | $out .= "\n\\begin{rawhtml}</TR><TR>\\end{rawhtml}\n"; | ||
| 1515 : | while (@captions) { | ||
| 1516 : | $out .= "\n\\begin{rawhtml} <TH>\n\\end{rawhtml}\n".&caption( shift(@captions) ) | ||
| 1517 : | . "\n\\begin{rawhtml} </TH>\n\\end{rawhtml}\n" ; | ||
| 1518 : | } | ||
| 1519 : | |||
| 1520 : | $out .= "\n\\begin{rawhtml} </TR> </TABLE >\n\\end{rawhtml}"; | ||
| 1521 : | } elsif ($main::displayMode eq 'HTML' || $main::displayMode eq 'HTML_tth'){ | ||
| 1522 : | $out .= "<P>\n <TABLE BORDER=2 CELLPADDING=3 CELLSPACING=2 ><TR ALIGN=CENTER VALIGN=MIDDLE>\n"; | ||
| 1523 : | while (@images) { | ||
| 1524 : | $out .= " \n<TD>". &image( shift(@images),%options ) ."</TD>"; | ||
| 1525 : | } | ||
| 1526 : | $out .= "</TR>\n<TR>"; | ||
| 1527 : | while (@captions) { | ||
| 1528 : | $out .= " <TH>". &caption( shift(@captions) ) ."</TH>"; | ||
| 1529 : | } | ||
| 1530 : | $out .= "\n</TR></TABLE></P>\n" | ||
| 1531 : | } | ||
| 1532 : | else { | ||
| 1533 : | $out = "Error: PGchoicemacros: imageRow: Unknown languageMode: $main::displayMode.\n"; | ||
| 1534 : | warn $out; | ||
| 1535 : | } | ||
| 1536 : | $out; | ||
| 1537 : | } | ||
| 1538 : | |||
| 1539 : | |||
| 1540 : | ########### | ||
| 1541 : | # Auxiliary macros | ||
| 1542 : | |||
| 1543 : | sub display_options2{ | ||
| 1544 : | my %options = @_; | ||
| 1545 : | my $out_string = ""; | ||
| 1546 : | foreach my $key (keys %options) { | ||
| 1547 : | $out_string .= " $key => $options{$key},<BR>"; | ||
| 1548 : | } | ||
| 1549 : | $out_string; | ||
| 1550 : | } | ||
| 1551 : | |||
| 1552 : | |||
| 1553 : | 1; |
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