| 1 | # Copyright (c) 1995-1999 Nick Ing-Simmons. All rights reserved. |
| 2 | # This program is free software; you can redistribute it and/or |
| 3 | # modify it under the same terms as Perl itself. |
| 4 | package Tk::Table; |
| 5 | use strict; |
| 6 | |
| 7 | use vars qw($VERSION); |
| 8 | $VERSION = '3.020'; # $Id: //depot/Tk8/Tk/Table.pm#20 $ |
| 9 | |
| 10 | use Tk::Pretty; |
| 11 | use AutoLoader; |
| 12 | use base qw(Tk::Frame); |
| 13 | |
| 14 | Construct Tk::Widget 'Table'; |
| 15 | |
| 16 | sub ClassInit |
| 17 | { |
| 18 | my ($class,$mw) = @_; |
| 19 | $mw->bind($class,'<Configure>',['QueueLayout',8]); |
| 20 | $mw->bind($class,'<FocusIn>', 'NoOp'); |
| 21 | $mw->XYscrollBind($class); |
| 22 | return $class; |
| 23 | } |
| 24 | |
| 25 | sub _view |
| 26 | { |
| 27 | my ($t,$s,$page,$a,$op,$num,$type) = @_; |
| 28 | if ($op eq 'moveto') |
| 29 | { |
| 30 | $$s = int(@$a*$num); |
| 31 | } |
| 32 | else |
| 33 | { |
| 34 | $num *= ($page/2) if ($type eq 'pages'); |
| 35 | $$s += $num; |
| 36 | } |
| 37 | $$s = 0 if ($$s < 0); |
| 38 | $t->QueueLayout(4); |
| 39 | } |
| 40 | |
| 41 | sub xview |
| 42 | { |
| 43 | my $t = shift; |
| 44 | $t->_view(\$t->{Left},$t->cget('-columns'),$t->{Width},@_); |
| 45 | } |
| 46 | |
| 47 | sub yview |
| 48 | { |
| 49 | my $t = shift; |
| 50 | $t->_view(\$t->{Top},$t->cget('-rows'),$t->{Height},@_); |
| 51 | } |
| 52 | |
| 53 | sub FocusChildren |
| 54 | { |
| 55 | my $t = shift; |
| 56 | return () if ($t->cget('-takefocus')); |
| 57 | return $t->SUPER::FocusChildren; |
| 58 | } |
| 59 | |
| 60 | sub Populate |
| 61 | { |
| 62 | my ($t,$args) = @_; |
| 63 | $t->SUPER::Populate($args); |
| 64 | $t->ConfigSpecs('-scrollbars' => [METHOD => 'scrollbars','Scrollbars','nw'], |
| 65 | '-takefocus' => [SELF => 'takeFocus','TakeFocus',1], |
| 66 | '-rows' => [METHOD => 'rows','Rows',10], |
| 67 | '-fixedrows' => [METHOD => 'fixedRows','FixedRows',0], |
| 68 | '-columns' => [METHOD => 'columns','Columns',10], |
| 69 | '-fixedcolumns' => [METHOD => 'fixedColumn','FixedColumns',0], |
| 70 | '-highlightthickness' => [SELF => 'highlightThickness','HighlightThickness',2] |
| 71 | ); |
| 72 | $t->{'Width'} = []; |
| 73 | $t->{'Height'} = []; |
| 74 | $t->{'Row'} = []; |
| 75 | $t->{'Slave'} = {}; |
| 76 | $t->{'Top'} = 0; |
| 77 | $t->{'Left'} = 0; |
| 78 | $t->{'Bottom'} = 0; |
| 79 | $t->{'Right'} = 0; |
| 80 | $t->{LayoutPending} = 0; |
| 81 | } |
| 82 | |
| 83 | sub sizeN |
| 84 | { |
| 85 | my ($n,$a) = @_; |
| 86 | my $max = 0; |
| 87 | my $i = 0; |
| 88 | my $sum = 0; |
| 89 | while ($i < @$a && $i < $n) |
| 90 | { |
| 91 | my $n = $a->[$i++]; |
| 92 | $a->[$i-1] = $n = 0 unless (defined $n); |
| 93 | $sum += $n; |
| 94 | } |
| 95 | $max = $sum if ($sum > $max); |
| 96 | while ($i < @$a) |
| 97 | { |
| 98 | $sum = $sum-$a->[$i-$n]+$a->[$i]; |
| 99 | $max = $sum if ($sum > $max); |
| 100 | $i++; |
| 101 | } |
| 102 | return $max; |
| 103 | } |
| 104 | |
| 105 | sub total |
| 106 | { |
| 107 | my ($a) = @_; |
| 108 | my $total = 0; |
| 109 | my $x; |
| 110 | foreach $x (@{$a}) |
| 111 | { |
| 112 | $total += $x; |
| 113 | } |
| 114 | return $total; |
| 115 | } |
| 116 | |
| 117 | sub constrain |
| 118 | { |
| 119 | my ($sb,$a,$pixels,$fixed) = @_; |
| 120 | my $n = $$sb+$fixed; |
| 121 | my $total = 0; |
| 122 | my $i; |
| 123 | $n = @$a if ($n > @$a); |
| 124 | $n = $fixed if ($n < $fixed); |
| 125 | for ($i= 0; $i < $fixed; $i++) |
| 126 | { |
| 127 | (defined($a->[$i])) && ($total += $a->[$i]); |
| 128 | } |
| 129 | for ($i=$n; $total < $pixels && $i < @$a; $i++) |
| 130 | { |
| 131 | $total += $a->[$i]; |
| 132 | } |
| 133 | while ($n > $fixed) |
| 134 | { |
| 135 | if (($total += $a->[--$n]) > $pixels) |
| 136 | { |
| 137 | $n++; |
| 138 | last; |
| 139 | } |
| 140 | } |
| 141 | $$sb = $n-$fixed; |
| 142 | } |
| 143 | |
| 144 | sub Layout |
| 145 | { |
| 146 | my ($t) = @_; |
| 147 | return unless Tk::Exists($t); |
| 148 | my $rows = @{$t->{Row}}; |
| 149 | my $bw = $t->cget(-highlightthickness); |
| 150 | my $frows = $t->cget(-fixedrows); |
| 151 | my $fcols = $t->cget(-fixedcolumns); |
| 152 | my $sb = $t->cget(-scrollbars); |
| 153 | my $H = $t->Height; |
| 154 | my $W = $t->Width; |
| 155 | my $tadj = $bw; |
| 156 | my $badj = $bw; |
| 157 | my $ladj = $bw; |
| 158 | my $radj = $bw; |
| 159 | my @xs = ($W,0,0,0); |
| 160 | my @ys = (0,$H,0,0); |
| 161 | my $xsb; |
| 162 | my $ysb; |
| 163 | |
| 164 | my $why = $t->{LayoutPending}; |
| 165 | $t->{LayoutPending} = 0; |
| 166 | |
| 167 | if ($sb =~ /^[ns]/) |
| 168 | { |
| 169 | $t->{xsb} = $t->Scrollbar(-orient => 'horizontal', -command => ['xview' => $t]) unless (defined $t->{xsb}); |
| 170 | $xsb = $t->{xsb}; |
| 171 | $xs[3] = $xsb->ReqHeight; |
| 172 | if ($sb =~ /^n/) |
| 173 | { |
| 174 | $xs[1] = $tadj; |
| 175 | $tadj += $xs[3]; |
| 176 | } |
| 177 | else |
| 178 | { |
| 179 | $badj += $xs[3]; |
| 180 | $xs[1] = $H-$badj; |
| 181 | } |
| 182 | } |
| 183 | else |
| 184 | { |
| 185 | $t->{xsb}->UnmapWindow if (defined $t->{xsb}); |
| 186 | } |
| 187 | |
| 188 | if ($sb =~ /[ew]$/) |
| 189 | { |
| 190 | $t->{ysb} = $t->Scrollbar(-orient => 'vertical', -command => ['yview' => $t]) unless (defined $t->{ysb}); |
| 191 | $ysb = $t->{ysb}; |
| 192 | $ys[2] = $ysb->ReqWidth; |
| 193 | if ($sb =~ /w$/) |
| 194 | { |
| 195 | $ys[0] = $ladj; |
| 196 | $ladj += $ys[2]; |
| 197 | } |
| 198 | else |
| 199 | { |
| 200 | $radj += $ys[2]; |
| 201 | $ys[0] = $W-$radj; |
| 202 | } |
| 203 | } |
| 204 | else |
| 205 | { |
| 206 | $t->{ysb}->UnmapWindow if (defined $t->{ysb}); |
| 207 | } |
| 208 | |
| 209 | constrain(\$t->{Top}, $t->{Height},$H-($tadj+$badj),$frows); |
| 210 | constrain(\$t->{Left},$t->{Width}, $W-($ladj+$radj),$fcols); |
| 211 | |
| 212 | my $top = $t->{Top}+$frows; |
| 213 | my $left = $t->{Left}+$fcols; |
| 214 | |
| 215 | if ($why & 49) |
| 216 | { |
| 217 | # Width and/or Height of element or |
| 218 | # number of rows and/or columns or |
| 219 | # scrollbar presence has changed |
| 220 | my $w = sizeN($t->cget('-columns'),$t->{Width})+$radj+$ladj; |
| 221 | my $h = sizeN($t->cget('-rows'),$t->{Height})+$tadj+$badj; |
| 222 | $t->GeometryRequest($w,$h); |
| 223 | } |
| 224 | |
| 225 | if ($rows) |
| 226 | { |
| 227 | my $cols = @{$t->{Width}}; |
| 228 | my $yhwm = $top-$frows; |
| 229 | my $xhwm = $left-$fcols; |
| 230 | my $y = $tadj; |
| 231 | my $r; |
| 232 | for ($r = 0; $r < $rows; $r++) |
| 233 | { |
| 234 | my $h = $t->{Height}[$r]; |
| 235 | if (($r < $top && $r >= $frows) || ($y+$h > $H-$badj)) |
| 236 | { |
| 237 | if (defined $t->{Row}[$r]) |
| 238 | { |
| 239 | my $c; |
| 240 | for ($c = 0; $c < @{$t->{Row}[$r]}; $c++) |
| 241 | { |
| 242 | my $s = $t->{Row}[$r][$c]; |
| 243 | if (defined $s) |
| 244 | { |
| 245 | $s->UnmapWindow; |
| 246 | if ($why & 1) |
| 247 | { |
| 248 | my $w = $t->{Width}[$c]; |
| 249 | $s->ResizeWindow($w,$h); |
| 250 | } |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | else |
| 256 | { |
| 257 | my $hwm = $left-$fcols; |
| 258 | my $sh = 0; |
| 259 | my $x = $ladj; |
| 260 | my $c; |
| 261 | $ys[1] = $y if ($y < $ys[1] && $r >= $frows); |
| 262 | for ($c = 0; $c <$cols; $c++) |
| 263 | { |
| 264 | my $s = $t->{Row}[$r][$c]; |
| 265 | my $w = $t->{Width}[$c]; |
| 266 | if (($c < $left && $c >= $fcols) || ($x+$w > $W-$radj) ) |
| 267 | { |
| 268 | if (defined $s) |
| 269 | { |
| 270 | $s->UnmapWindow; |
| 271 | $s->ResizeWindow($w,$h) if ($why & 1); |
| 272 | } |
| 273 | } |
| 274 | else |
| 275 | { |
| 276 | $xs[0] = $x if ($x < $xs[0] && $c >= $fcols); |
| 277 | if (defined $s) |
| 278 | { |
| 279 | if ($why & 1) |
| 280 | { |
| 281 | $s->MoveResizeWindow($x,$y,$w,$h); |
| 282 | } |
| 283 | else |
| 284 | { |
| 285 | $s->MoveWindow($x,$y); |
| 286 | } |
| 287 | $s->MapWindow; |
| 288 | } |
| 289 | $x += $w; |
| 290 | if ($c >= $fcols) |
| 291 | { |
| 292 | $hwm++; |
| 293 | $sh += $w |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | $xhwm = $hwm if ($hwm > $xhwm); |
| 298 | $xs[2] = $sh if ($sh > $xs[2]); |
| 299 | $y += $h; |
| 300 | if ($r >= $frows) |
| 301 | { |
| 302 | $ys[3] += $h; |
| 303 | $yhwm++; |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | $t->{Bottom} = $yhwm; |
| 308 | $t->{Right} = $xhwm; |
| 309 | if (defined $xsb && $xs[2] > 0) |
| 310 | { |
| 311 | $xsb->MoveResizeWindow(@xs); |
| 312 | $cols -= $fcols; |
| 313 | if ($cols > 0) |
| 314 | { |
| 315 | $xsb->set($t->{Left}/$cols,$t->{Right}/$cols); |
| 316 | $xsb->MapWindow; |
| 317 | } |
| 318 | } |
| 319 | if (defined $ysb && $ys[3] > 0) |
| 320 | { |
| 321 | $ysb->MoveResizeWindow(@ys); |
| 322 | $rows -= $frows; |
| 323 | if ($rows > 0) |
| 324 | { |
| 325 | $ysb->set($t->{Top}/$rows,$t->{Bottom}/$rows); |
| 326 | $ysb->MapWindow; |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | sub QueueLayout |
| 333 | { |
| 334 | my ($m,$why) = @_; |
| 335 | $m->afterIdle(['Layout',$m]) unless ($m->{LayoutPending}); |
| 336 | $m->{LayoutPending} |= $why; |
| 337 | } |
| 338 | |
| 339 | sub SlaveGeometryRequest |
| 340 | { |
| 341 | my ($m,$s) = @_; |
| 342 | my ($row,$col) = @{$m->{Slave}{$s->PathName}}; |
| 343 | my $sw = $s->ReqWidth; |
| 344 | my $sh = $s->ReqHeight; |
| 345 | my $sz = 0; |
| 346 | if ($sw > $m->{Width}[$col]) |
| 347 | { |
| 348 | $m->{Width}[$col] = $sw; |
| 349 | $m->QueueLayout(1); |
| 350 | $sz++; |
| 351 | } |
| 352 | if ($sh > $m->{Height}[$row]) |
| 353 | { |
| 354 | $m->{Height}[$row] = $sh; |
| 355 | $m->QueueLayout(1); |
| 356 | $sz++; |
| 357 | } |
| 358 | if (!$sz) |
| 359 | { |
| 360 | $s->ResizeWindow($m->{Width}[$col],$m->{Height}[$row]); |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | sub get |
| 365 | { |
| 366 | my ($t,$row,$col) = @_; |
| 367 | return $t->{Row}[$row][$col]; |
| 368 | } |
| 369 | |
| 370 | sub LostSlave |
| 371 | { |
| 372 | my ($t,$s) = @_; |
| 373 | my $info = delete $t->{Slave}{$s->PathName}; |
| 374 | if (defined $info) |
| 375 | { |
| 376 | my ($row,$col) = @$info; |
| 377 | $t->{Row}[$row][$col] = undef; |
| 378 | $s->UnmapWindow; |
| 379 | } |
| 380 | else |
| 381 | { |
| 382 | $t->BackTrace('Cannot find' . $s->PathName); |
| 383 | } |
| 384 | $t->QueueLayout(2); |
| 385 | } |
| 386 | |
| 387 | sub put |
| 388 | { |
| 389 | my ($t,$row,$col,$w) = @_; |
| 390 | $w = $t->Label(-text => $w) unless (ref $w); |
| 391 | $t->ManageGeometry($w); |
| 392 | unless (defined $t->{Row}[$row]) |
| 393 | { |
| 394 | $t->{Row}[$row] = []; |
| 395 | $t->{Height}[$row] = 0; |
| 396 | } |
| 397 | unless (defined $t->{Width}[$col]) |
| 398 | { |
| 399 | $t->{Width}[$col] = 0; |
| 400 | } |
| 401 | my $old = $t->{Row}[$row][$col]; |
| 402 | if (defined $old) |
| 403 | { |
| 404 | $old->UnmanageGeometry; |
| 405 | $t->LostSlave($old); |
| 406 | } |
| 407 | $t->{Row}[$row][$col] = $w; |
| 408 | $t->{Slave}{$w->PathName} = [$row,$col]; |
| 409 | $t->SlaveGeometryRequest($w); |
| 410 | $t->QueueLayout(2); |
| 411 | return $old; |
| 412 | } |
| 413 | |
| 414 | # |
| 415 | # configure methods |
| 416 | # |
| 417 | |
| 418 | sub scrollbars |
| 419 | { |
| 420 | my ($t,$v) = @_; |
| 421 | if (@_ > 1) |
| 422 | { |
| 423 | $t->_configure(-scrollbars => $v); |
| 424 | $t->QueueLayout(32); |
| 425 | } |
| 426 | return $t->_cget('-scrollbars'); |
| 427 | } |
| 428 | |
| 429 | sub rows |
| 430 | { |
| 431 | my ($t,$r) = @_; |
| 432 | if (@_ > 1) |
| 433 | { |
| 434 | $t->_configure(-rows => $r); |
| 435 | $t->QueueLayout(16); |
| 436 | } |
| 437 | return $t->_cget('-rows'); |
| 438 | } |
| 439 | |
| 440 | sub fixedrows |
| 441 | { |
| 442 | my ($t,$r) = @_; |
| 443 | if (@_ > 1) |
| 444 | { |
| 445 | $t->_configure(-fixedrows => $r); |
| 446 | $t->QueueLayout(16); |
| 447 | } |
| 448 | return $t->_cget('-fixedrows'); |
| 449 | } |
| 450 | |
| 451 | sub columns |
| 452 | { |
| 453 | my ($t,$r) = @_; |
| 454 | if (@_ > 1) |
| 455 | { |
| 456 | $t->_configure(-columns => $r); |
| 457 | $t->QueueLayout(16); |
| 458 | } |
| 459 | return $t->_cget('-columns'); |
| 460 | } |
| 461 | |
| 462 | sub fixedcolumns |
| 463 | { |
| 464 | my ($t,$r) = @_; |
| 465 | if (@_ > 1) |
| 466 | { |
| 467 | $t->_configure(-fixedcolumns => $r); |
| 468 | $t->QueueLayout(16); |
| 469 | } |
| 470 | return $t->_cget('-fixedcolumns'); |
| 471 | } |
| 472 | |
| 473 | 1; |
| 474 | __END__ |
| 475 | sub Create |
| 476 | { |
| 477 | my $t = shift; |
| 478 | my $r = shift; |
| 479 | my $c = shift; |
| 480 | my $kind = shift; |
| 481 | $t->put($r,$c,$t->$kind(@_)); |
| 482 | } |
| 483 | |
| 484 | sub totalColumns |
| 485 | { |
| 486 | scalar @{shift->{'Width'}}; |
| 487 | } |
| 488 | |
| 489 | sub totalRows |
| 490 | { |
| 491 | scalar @{shift->{'Height'}}; |
| 492 | } |
| 493 | |
| 494 | sub Posn |
| 495 | { |
| 496 | my ($t,$s) = @_; |
| 497 | my $info = $t->{Slave}{$s->PathName}; |
| 498 | return (wantarray) ? @$info : $info; |
| 499 | } |
| 500 | |
| 501 | sub see |
| 502 | { |
| 503 | my $t = shift; |
| 504 | my ($row,$col) = (@_ == 2) ? @_ : @{$t->{Slave}{$_[0]->PathName}}; |
| 505 | my $see = 1; |
| 506 | if (($row -= $t->cget('-fixedrows')) >= 0) |
| 507 | { |
| 508 | if ($row < $t->{Top}) |
| 509 | { |
| 510 | $t->{Top} = $row; |
| 511 | $t->QueueLayout(4); |
| 512 | $see = 0; |
| 513 | } |
| 514 | elsif ($row >= $t->{Bottom}) |
| 515 | { |
| 516 | $t->{Top} += ($row - $t->{Bottom}+1); |
| 517 | $t->QueueLayout(4); |
| 518 | $see = 0; |
| 519 | } |
| 520 | } |
| 521 | if (($col -= $t->cget('-fixedcolumns')) >= 0) |
| 522 | { |
| 523 | if ($col < $t->{Left}) |
| 524 | { |
| 525 | $t->{Left} = $col; |
| 526 | $t->QueueLayout(4); |
| 527 | $see = 0; |
| 528 | } |
| 529 | elsif ($col >= $t->{Right}) |
| 530 | { |
| 531 | $t->{Left} += ($col - $t->{Right}+1); |
| 532 | $t->QueueLayout(4); |
| 533 | $see = 0; |
| 534 | } |
| 535 | } |
| 536 | return $see; |
| 537 | } |
| 538 | |
| 539 | =cut |
| 540 | |