package install::gtk; # $Id$ use diagnostics; use strict; use ugtk2; use mygtk2; use common; use lang; use devices; #-##################################################################################### #-INTERN CONSTANT #-##################################################################################### #- if we're running for the doc team, we want screenshots with #- a good B&W contrast: we'll override values of our theme my $theme_overriding_for_doc = q(style "galaxy-default" { base[SELECTED] = "#E0E0FF" base[ACTIVE] = "#E0E0FF" base[PRELIGHT] = "#E0E0FF" bg[SELECTED] = "#E0E0FF" bg[ACTIVE] = "#E0E0FF" bg[PRELIGHT] = "#E0E0FF" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" fg[SELECTED] = "#000000" } style "white-on-blue" { base[NORMAL] = { 0.93, 0.93, 0.93 } bg[NORMAL] = { 0.93, 0.93, 0.93 } text[NORMAL] = "#000000" fg[NORMAL] = "#000000" } style "background" { bg[NORMAL] = { 0.93, 0.93, 0.93 } } style "background-logo" { bg[NORMAL] = { 0.70, 0.70, 0.70 } } widget "*logo*" style "background-logo" ); #------------------------------------------------------------------------------ sub load_rc { my ($o, $name) = @_; my $f = $name; -r $name or $f = find { -r $_ } map { "$_/themes-$name.rc" } ("share", $ENV{SHARE_PATH}, dirname(__FILE__) . '/..'); if ($f) { Gtk2::Rc->parse_string($o->{doc} ? $theme_overriding_for_doc : scalar cat_($f)); } } #------------------------------------------------------------------------------ sub load_font { my ($o) = @_; if (lang::text_direction_rtl()) { Gtk2::Widget->set_default_direction('rtl'); my ($x, $y) = $::WizardWindow->get_position; my ($width) = $::WizardWindow->get_size; $::WizardWindow->move($::rootwidth - $width - $x, $y); } Gtk2::Rc->parse_string(q( style "default-font" { font_name = ") . lang::l2pango_font($o->{locale}{lang}) . q(" } widget "*" style "default-font" )); } #------------------------------------------------------------------------------ sub default_theme { my ($o) = @_; $o->{simple_themes} || $o->{vga16} ? 'blue' : 'galaxy'; } sub install_theme { my ($o) = @_; load_rc($o, $o->{theme} ||= default_theme($o)); load_font($o); my $win = gtknew('Window', widget_name => 'background'); $win->realize; mygtk2::set_root_window_background_with_gc($win->style->bg_gc('normal')); } #------------------------------------------------------------------------------ my %steps; sub create_steps_window { my ($o) = @_; return if $::stepswidth == 0; $o->{steps_window} and $o->{steps_window}->destroy; $steps{$_} ||= gtknew('Pixbuf', file => "steps_$_") foreach qw(on off done); my $category = sub { gtknew('HBox', children_tight => [ gtknew('Label', text_markup => '' . $_[0] . '', widget_name => 'Step-categories') ]); }; my @l = $category->(N("Installation")); foreach (grep { !eval $o->{steps}{$_}{hidden} } @{$o->{orderedSteps}}) { if ($_ eq 'setRootPassword_addUser') { push @l, '', $category->(N("Configuration")); } my $img = gtknew('Image', file => 'steps_off.png'); $steps{steps}{$_}{img} = $img; $steps{steps}{$_}{raw_text} = translate($o->{steps}{$_}{text}); push @l, gtknew('HBox', spacing => 7, children_tight => [ '', '', $img, $steps{steps}{$_}{text} = gtknew('Label', text => $steps{steps}{$_}{raw_text}) ]); } my $offset = 20; $o->{steps_window} = gtknew('Window', width => ($::stepswidth - $offset), widget_name => 'Steps', position => [ lang::text_direction_rtl() ? $::rootwidth - $::stepswidth : $offset, 150 ], child => gtknew('VBox', spacing => 6, children_tight => \@l)); $o->{steps_window}->show; } sub update_steps_position { my ($o) = @_; return if !$steps{steps}; my $last_step; foreach (@{$o->{orderedSteps}}) { exists $steps{steps}{$_} or next; if ($o->{steps}{$_}{entered} && !$o->{steps}{$_}{done}) { $steps{steps}{$_}{img}->set_from_pixbuf($steps{on}); $steps{steps}{$_}{text}->set_markup('' . $steps{steps}{$_}{raw_text} . ''); if ($last_step) { $steps{steps}{$last_step}{img}->set_from_pixbuf($steps{done}); $steps{steps}{$last_step}{text}->set_markup('' . $steps{steps}{$last_step}{raw_text} . ''); } return; } $last_step = $_; } mygtk2::flush(); #- for auto_installs which never go through the Gtk2 main loop } #------------------------------------------------------------------------------ sub create_logo_window { my ($o) = @_; return if $::logowidth == 0; mygtk2::may_destroy($o->{logo_window}); my $file = "logo-mandriva.png"; $o->{logo_window} = gtknew('Window', width => $::logowidth, height => $::logoheight, widget_name => 'logo', child => gtknew('Image', file => $file), ); $o->{logo_window}->show; } #------------------------------------------------------------------------------ sub init_gtk { my ($o) = @_; symlink("/tmp/stage2/etc/$_", "/etc/$_") foreach qw(gtk-2.0 pango fonts); if ($o->{vga16}) { #- inactivate antialias in VGA16 because it makes fonts look worse output('/tmp/fonts.conf', q( /etc/fonts/fonts.conf false )); $ENV{FONTCONFIG_FILE} = '/tmp/fonts.conf'; } Gtk2->init; Gtk2->set_locale; } #------------------------------------------------------------------------------ sub init_sizes { my ($o) = @_; ($::rootwidth, $::rootheight) = (Gtk2::Gdk->screen_width, Gtk2::Gdk->screen_height); $::stepswidth = $::rootwidth <= 640 ? 0 : 200; ($::logowidth, $::logoheight) = $::rootwidth <= 640 ? (0, 0) : (800, 75); ($o->{windowwidth}, $o->{windowheight}) = ($::rootwidth - $::stepswidth, $::rootheight - $::helpheight - $::logoheight); ($::real_windowwidth, $::real_windowheight) = (576, 418); } sub handle_unsafe_mouse { my ($o, $window) = @_; $o->{mouse}{unsafe} or return; $window->add_events('pointer-motion-mask'); my $signal; $signal = $window->signal_connect(motion_notify_event => sub { delete $o->{mouse}{unsafe}; log::l("unsetting unsafe mouse"); $window->signal_handler_disconnect($signal); }); } sub special_shortcuts { my (undef, $event) = @_; my $d = ${{ $Gtk2::Gdk::Keysyms{F2} => 'screenshot', $Gtk2::Gdk::Keysyms{Home} => 'restart' }}{$event->keyval}; if ($d eq 'screenshot') { install::any::take_screenshot($::o); } elsif ($d eq 'restart' && member('control-mask', @{$event->state}) && member('mod1-mask', @{$event->state})) { log::l("restarting install"); ugtk2->exit(0x35); } 0; } #------------------------------------------------------------------------------ sub createXconf { my ($file, $mouse_type, $mouse_dev, $_wacom_dev, $Driver) = @_; symlinkf(devices::make($mouse_dev), "/dev/mouse") if $mouse_dev ne 'none'; #- needed for imlib to start on 8-bit depth visual. symlink("/tmp/stage2/etc/imrc", "/etc/imrc"); symlink("/tmp/stage2/etc/im_palette.pal", "/etc/im_palette.pal"); #- remove "error opening security policy file" warning symlink("/tmp/stage2/etc/X11", "/etc/X11"); if ($Driver) { output($file, sprintf(<<'END', 'Option "XkbDisable"', $mouse_type, $Driver, $Driver eq 'fbdev' ? '"default"' : '"800x600" "640x480"')); Section "Files" FontPath "/usr/share/fonts:unscaled" EndSection Section "InputDevice" Identifier "Keyboard" Driver "keyboard" %s Option "XkbModel" "pc105" Option "XkbLayout" "" EndSection Section "InputDevice" Identifier "Mouse" Driver "mouse" Option "Protocol" "%s" Option "Device" "/dev/mouse" Option "ZAxisMapping" "4 5" EndSection Section "Monitor" Identifier "monitor" HorizSync 31.5-35.5 VertRefresh 50-70 EndSection Section "Device" Identifier "device" Driver "%s" EndSection Section "Screen" Identifier "screen" Device "device" Monitor "monitor" DefaultColorDepth 16 Subsection "Display" Depth 16 Modes %s EndSubsection EndSection Section "ServerLayout" Identifier "layout" Screen "screen" InputDevice "Mouse" "CorePointer" InputDevice "Keyboard" "CoreKeyboard" EndSection END } } 1; > 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835

package ugtk;

use diagnostics;
use strict;
use vars qw(@ISA %EXPORT_TAGS @EXPORT_OK $border);

@ISA = qw(Exporter);
%EXPORT_TAGS = (
    helpers => [ qw(create_okcancel createScrolledWindow create_menu create_notebook create_packtable create_hbox create_vbox create_adjustment create_box_with_title create_treeitem) ],
    wrappers => [ qw(gtksignal_connect gtkradio gtkpack gtkpack_ gtkpack__ gtkpack2 gtkpack3 gtkpack2_ gtkpack2__ gtkpowerpack gtkcombo_setpopdown_strings gtkset_editable gtksetstyle gtkset_text gtkset_tip gtkappenditems gtkappend gtkset_shadow_type gtkset_layout gtkset_relief gtkadd gtkput gtktext_insert gtkset_usize gtksize gtkset_justify gtkset_active gtkset_sensitive gtkset_modal gtkset_border_width gtkmove gtkresize gtkshow gtkhide gtkdestroy gtkflush gtkcolor gtkset_mousecursor gtkset_mousecursor_normal gtkset_mousecursor_wait gtkset_background gtkset_default_fontset gtkctree_children gtkxpm gtkpng create_pix_text get_text_coord fill_tiled gtkicons_labels_widget write_on_pixmap gtkcreate_xpm gtkcreate_png gtkbuttonset gtkroot gtkentry) ],
    various => [ qw(add2notebook add_icon_path n_line_size) ],
);
$EXPORT_TAGS{all} = [ map { @$_ } values %EXPORT_TAGS ];
@EXPORT_OK = map { @$_ } values %EXPORT_TAGS;

my $use_pixbuf;
my $use_imlib;
my $use_gnome;

BEGIN { 
    eval { require Gtk::Gdk::Pixbuf; Gtk::Gdk::Pixbuf->init };
    $use_pixbuf = $@ ? 0 : 1;
    eval { require Gtk::Gdk::ImlibImage; Gtk::Gdk::ImlibImage->init };
    $use_imlib = $@ ? 0 : 1;
    eval { require Gnome };
    $use_gnome = $@ ? 0 : 1;
}

use Gtk;

use c;
use log;
use common;

my @icon_paths;
sub add_icon_path { push @icon_paths, @_ }
sub icon_paths {
   (@icon_paths, $ENV{SHARE_PATH}, "$ENV{SHARE_PATH}/icons", "$ENV{SHARE_PATH}/libDrakX/pixmaps", "/usr/lib/libDrakX/icons", "pixmaps", 'standalone/icons');
}  

#-#######################
# gtk widgets wrappers
#-#######################

sub gtkdestroy                { $_[0] and $_[0]->destroy }
sub gtkflush                  { Gtk->main_iteration while Gtk->events_pending }
sub gtkhide                   { $_[0]->hide; $_[0] }
sub gtkmove                   { $_[0]->window->move($_[1], $_[2]); $_[0] }
sub gtkpack                   { gtkpowerpack(1, 1, @_) }
sub gtkpack_                  { gtkpowerpack('arg', 1, @_) }
sub gtkpack__                 { gtkpowerpack(0, 1, @_) }
sub gtkpack2                  { gtkpowerpack(1, 0, @_) }
sub gtkpack2_                 { gtkpowerpack('arg', 0, @_) }
sub gtkpack2__                { gtkpowerpack(0, 0, @_) }
sub gtkpack3                  { gtkpowerpack($a?1:0, 0, @_) }
sub gtkput                    { $_[0]->put(gtkshow($_[1]), $_[2], $_[3]); $_[0] }
sub gtkpixmap                 { new Gtk::Pixmap(gdkpixmap(@_)) }
sub gtkresize                 { $_[0]->window->resize($_[1], $_[2]); $_[0] }
sub gtkset_active             { $_[0]->set_active($_[1]); $_[0] }
sub gtkset_border_width       { $_[0]->set_border_width($_[1]); $_[0] }
sub gtkset_editable           { $_[0]->set_editable($_[1]); $_[0] }
sub gtkset_justify            { $_[0]->set_justify($_[1]); $_[0] }
sub gtkset_layout             { $_[0]->set_layout($_[1]); $_[0] }
sub gtkset_modal              { $_[0]->set_modal($_[1]); $_[0] }
sub gtkset_mousecursor_normal { gtkset_mousecursor(68, @_) }
sub gtkset_mousecursor_wait   { gtkset_mousecursor(150, @_) }
sub gtkset_relief             { $_[0]->set_relief($_[1]); $_[0] }
sub gtkset_sensitive          { $_[0]->set_sensitive($_[1]); $_[0] }
sub gtkset_tip                { $_[0]->set_tip($_[1], $_[2]) if $_[2]; $_[1] }
sub gtkset_shadow_type        { $_[0]->set_shadow_type($_[1]); $_[0] }
sub gtkset_style              { $_[0]->set_style($_[1]); $_[0] }
sub gtkset_usize              { $_[0]->set_usize($_[1],$_[2]); $_[0] }
sub gtkshow                   { $_[0]->show; $_[0] }
sub gtksize                   { $_[0]->size($_[1],$_[2]); $_[0] }

sub gdkpixmap {
    my ($f, $w) = @_;
    $f =~ m|.png$| and return gtkcreate_png($f);
    $f =~ m|.xpm$| and return gtkcreate_xpm($w, $f);
}

sub gtkadd {
    my $w = shift;
    foreach (@_) {
	ref $_ or $_ = new Gtk::Label($_);
	$w->add($_);
	$_->show;
    }
    $w
}

sub gtkappend {
    my $w = shift;
    foreach (@_) {
	my $l = $_;
	ref $l or $l = new Gtk::Label($l);
	$w->append($l);
	$l->show;
    }
    $w
}

sub gtkappenditems {
    my $w = shift;
    $_->show() foreach @_;
    $w->append_items(@_);
    $w
}

sub gtkbuttonset {
    gtkdestroy($_[0]->child);
    gtkadd($_[0], gtkshow($_[1]))
}

sub gtkentry {
    my ($text) = @_;
    my $e = new Gtk::Entry;
    $e->set_text($text);
    $e;
}

sub gtksetstyle { 
    my ($w, $s) = @_;
    $w->set_style($s);
    $w;
}

sub gtkcolor {
    my ($r, $g, $b) = @_;
    my $color = bless { red => $r, green => $g, blue => $b }, 'Gtk::Gdk::Color';
    gtkroot()->get_colormap->color_alloc($color);
}

sub gtkradio {
    my $def = shift;
    my $radio;
    map { $radio = new Gtk::RadioButton($_, $radio ? $radio : ());
	  $radio->set_active($_ eq $def); $radio } @_;
}

sub gtkroot {
    Gtk->init;
    Gtk->set_locale;
    Gtk::Gdk::Window->new_foreign(Gtk::Gdk->ROOT_WINDOW);
}

sub gtkset_background {
    my ($r, $g, $b) = @_;
    my $root = gtkroot();
    my $gc = Gtk::Gdk::GC->new($root);
    my $color = gtkcolor($r, $g, $b);
    $gc->set_foreground($color);
    $root->set_background($color);
    my ($h, $w) = $root->get_size;
    $root->draw_rectangle($gc, 1, 0, 0, $w, $h);
}

sub gtktext_insert {
    my ($w, $t) = @_;
    $w->freeze;
    $w->backward_delete($w->get_length);
    $w->insert(undef, undef, undef, $t); 
    #- DEPRECATED? needs \n otherwise in case of one line text the beginning is not shown (even with the vadj->set_value)
    $w->set_word_wrap(1);
#-    $w->vadj->set_value(0);
    $w->thaw;
    $w;
}

sub gtkset_text {
    my ($w, $s) = @_;
    $w->set_text($s);
    $w;
}

sub gtkcombo_setpopdown_strings {
    my $w = shift;
    $w->set_popdown_strings(@_);
    $w;
}

sub gtkappend_text {
    my ($w, $s) = @_;
    $w->append_text($s);
    $w;
}

sub gtkprepend_text {
    my ($w, $s) = @_;
    $w->prepend_text($s);
    $w;
}

sub gtkset_mousecursor {
    my ($type, $w) = @_;
    ($w || gtkroot())->set_cursor(Gtk::Gdk::Cursor->new($type));
}

sub gtksignal_connect {
    my $w = shift;
    $w->signal_connect(@_);
    $w;
}

#-#######################
# create widgets wrappers
#-#######################

sub create_adjustment {
    my ($val, $min, $max) = @_;
    new Gtk::Adjustment($val, $min, $max + 1, 1, ($max - $min + 1) / 10, 1);
}

sub create_box_with_title {
    my $o = shift;

    my $nbline = sum(map { round(length($_) / 60 + 1/2) } map { split "\n" } @_);
    my $box = new Gtk::VBox(0,0);
    return $box if $nbline == 0;

    $o->{box_size} = n_line_size($nbline, 'text', $box);
    if (@_ <= 2 && $nbline > 4) {
	$o->{icon} && !$::isWizard and 
	  eval { gtkpack__($box, gtkset_border_width(gtkpack_(new Gtk::HBox(0,0), 1, gtkpng($o->{icon})),5)) };
	my $wanted = $o->{box_size};
	$o->{box_size} = min(200, $o->{box_size});
	my $has_scroll = $o->{box_size} < $wanted;

	my $wtext = new Gtk::Text;
	$wtext->can_focus($has_scroll);
	chomp(my $text = join("\n", @_));
	my $scroll = createScrolledWindow(gtktext_insert($wtext, $text));
	$scroll->set_usize(400, $o->{box_size});
	gtkpack__($box, $scroll);
    } else {
	my $a = !$::no_separator;
	undef $::no_separator;
	if ($o->{icon} && !$::isWizard) {
	    gtkpack__($box,
		      gtkpack_(new Gtk::HBox(0,0),
			       0, gtkset_usize(new Gtk::VBox(0,0), 15, 0),
			       0, eval { gtkpng($o->{icon}) },
			       0, gtkset_usize(new Gtk::VBox(0,0), 15, 0),
			       1, gtkpack_($o->{box_title} = new Gtk::VBox(0,0),
					   1, new Gtk::HBox(0,0),
					   (map {
					       my $w = ref $_ ? $_ : new Gtk::Label($_);
					       $::isWizard and $w->set_justify("left");
					       $w->set_name("Title");
					       (0, $w);
					   } map { ref $_ ? $_ : warp_text($_) } @_),
					   1, new Gtk::HBox(0,0),
					  )
			      ),
		      if_($a, new Gtk::HSeparator)
		     )
	} else {
	    gtkpack__($box,
		      (map {
			  my $w = ref $_ ? $_ : new Gtk::Label($_);
			  $::isWizard and $w->set_justify("left");
			  $w->set_name("Title");
			  $w;
		      } map { ref $_ ? $_ : warp_text($_) } @_),
		      if_($a, new Gtk::HSeparator)
		     )
	}
    }
}

sub create_hbox { gtkset_layout(gtkset_border_width(new Gtk::HButtonBox, 3), $_[0] || 'spread') }

sub create_menu {
    my $title = shift;
    my $w = new Gtk::MenuItem($title);
    $w->set_submenu(gtkshow(gtkappend(new Gtk::Menu, @_)));
    $w
}

sub create_notebook {
    my $n = new Gtk::Notebook;
    add2notebook($n, splice(@_, 0, 2)) while @_;
    $n
}

sub create_packtable {
    my ($options, @l) = @_;
    my $w = new Gtk::Table(0, 0, $options->{homogeneous} || 0);
    map_index {
	my ($i, $l) = ($_[0], $_);
	map_index {
	    my ($j) = @_;
	    if ($_) {
		ref $_ or $_ = new Gtk::Label($_);
		$j != $#$l ?
		  $w->attach($_, $j, $j + 1, $i, $i + 1, 'fill', 'fill', 5, 0) :
		  $w->attach($_, $j, $j + 1, $i, $i + 1, 1|4, ref($_) eq 'Gtk::ScrolledWindow' ? 1|4 : 0, 0, 0);
		$_->show;
	    }
	} @$l;
    } @l;
    $w->set_col_spacings($options->{col_spacings} || 0);
    $w->set_row_spacings($options->{row_spacings} || 0);
    $w
}

sub createScrolledWindow {
    my ($W, $policy) = @_;
    my $w = new Gtk::ScrolledWindow(undef, undef);
    $policy ||= [ 'automatic', 'automatic'];
    $w->set_policy(@{$policy});
    member(ref $W, qw(Gtk::CList Gtk::CTree Gtk::Text)) ?
      $w->add($W) :
      $w->add_with_viewport($W);
    $W->can("set_focus_vadjustment") and $W->set_focus_vadjustment($w->get_vadjustment);
    $W->show;
    $w
}

sub create_treeitem {
    my ($name) = @_;
    
    my ($next_child, $left, $right, $up, $down);
    $next_child = sub {
	my ($c, $dir) = @_;
	my @childs = $c->parent->children;
	my $i; for ($i = 0; $i < @childs; $i++) { last if $childs[$i] == $c || $childs[$i]->subtree == $c }
	$i += $dir;
	0 <= $i && $i < @childs ? $childs[$i] : undef;
    };