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Diffstat (limited to 'Master/tlpkg/tlperl/lib/Tk/Toplevel.pm')
| -rw-r--r-- | Master/tlpkg/tlperl/lib/Tk/Toplevel.pm | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/Tk/Toplevel.pm b/Master/tlpkg/tlperl/lib/Tk/Toplevel.pm new file mode 100644 index 00000000000..7bcd156d475 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Tk/Toplevel.pm @@ -0,0 +1,211 @@ +# Copyright (c) 1995-2003 Nick Ing-Simmons. All rights reserved. +# This program is free software; you can redistribute it and/or +# modify it under the same terms as Perl itself. +package Tk::Toplevel; +use AutoLoader; + +use vars qw($VERSION); +$VERSION = '4.006'; # $Id: //depot/Tkutf8/Tk/Toplevel.pm#6 $ + +use base qw(Tk::Wm Tk::Frame); + +Construct Tk::Widget 'Toplevel'; + +sub Tk_cmd { \&Tk::toplevel } + +sub CreateOptions +{ + return (shift->SUPER::CreateOptions,'-screen','-use') +} + +sub Populate +{ + my ($cw,$arg) = @_; + $cw->SUPER::Populate($arg); + $cw->ConfigSpecs('-title',['METHOD',undef,undef,$cw->class]); +} + +sub Icon +{ + my ($top,%args) = @_; + my $icon = $top->iconwindow; + my $state = $top->state; + if ($state ne 'withdrawn') + { + $top->withdraw; + $top->update; # Let attributes propogate + } + unless (defined $icon) + { + $icon = Tk::Toplevel->new($top,'-borderwidth' => 0,'-class'=>'Icon'); + $icon->withdraw; + # Fake Populate + my $lab = $icon->Component('Label' => 'icon'); + $lab->pack('-expand'=>1,'-fill' => 'both'); + $icon->ConfigSpecs(DEFAULT => ['DESCENDANTS']); + # Now do tail of InitObject + $icon->ConfigDefault(\%args); + # And configure that new would have done + $top->iconwindow($icon); + $top->update; + $lab->DisableButtonEvents; + $lab->update; + } + $top->iconimage($args{'-image'}) if (exists $args{'-image'}); + $icon->configure(%args); + $icon->idletasks; # Let size request propogate + $icon->geometry($icon->ReqWidth . 'x' . $icon->ReqHeight); + $icon->update; # Let attributes propogate + $top->deiconify if ($state eq 'normal'); + $top->iconify if ($state eq 'iconic'); +} + +sub menu +{ + my $w = shift; + my $menu; + $menu = $w->cget('-menu'); + unless (defined $menu) + { + $w->configure(-menu => ($menu = $w->SUPER::menu)) + } + $menu->configure(@_) if @_; + return $menu; +} + + +1; +__END__ + +#---------------------------------------------------------------------- +# +# Focus Group +# +# Focus groups are used to handle the user's focusing actions inside a +# toplevel. +# +# One example of using focus groups is: when the user focuses on an +# entry, the text in the entry is highlighted and the cursor is put to +# the end of the text. When the user changes focus to another widget, +# the text in the previously focused entry is validated. +# + +#---------------------------------------------------------------------- +# tkFocusGroup_Create -- +# +# Create a focus group. All the widgets in a focus group must be +# within the same focus toplevel. Each toplevel can have only +# one focus group, which is identified by the name of the +# toplevel widget. +# +sub FG_Create { + my $t = shift; + unless (exists $t->{'_fg'}) { + $t->{'_fg'} = 1; + $t->bind('<FocusIn>', sub { + my $w = shift; + my $Ev = $w->XEvent; + $t->FG_In($w, $Ev->d); + } + ); + $t->bind('<FocusOut>', sub { + my $w = shift; + my $Ev = $w->XEvent; + $t->FG_Out($w, $Ev->d); + } + ); + $t->bind('<Destroy>', sub { + my $w = shift; + my $Ev = $w->XEvent; + $t->FG_Destroy($w); + } + ); + # <Destroy> is not sufficient to break loops if never mapped. + $t->OnDestroy([$t,'FG_Destroy']); + } +} + +# tkFocusGroup_BindIn -- +# +# Add a widget into the "FocusIn" list of the focus group. The $cmd will be +# called when the widget is focused on by the user. +# +sub FG_BindIn { + my($t, $w, $cmd) = @_; + $t->Error("focus group \"$t\" doesn't exist") unless (exists $t->{'_fg'}); + $t->{'_FocusIn'}{$w} = Tk::Callback->new($cmd); +} + +# tkFocusGroup_BindOut -- +# +# Add a widget into the "FocusOut" list of the focus group. The +# $cmd will be called when the widget loses the focus (User +# types Tab or click on another widget). +# +sub FG_BindOut { + my($t, $w, $cmd) = @_; + $t->Error("focus group \"$t\" doesn't exist") unless (exists $t->{'_fg'}); + $t->{'_FocusOut'}{$w} = Tk::Callback->new($cmd); +} + +# tkFocusGroup_Destroy -- +# +# Cleans up when members of the focus group is deleted, or when the +# toplevel itself gets deleted. +# +sub FG_Destroy { + my($t, $w) = @_; + if (!defined($w) || $t == $w) { + delete $t->{'_fg'}; + delete $t->{'_focus'}; + delete $t->{'_FocusOut'}; + delete $t->{'_FocusIn'}; + } else { + if (exists $t->{'_focus'}) { + delete $t->{'_focus'} if ($t->{'_focus'} == $w); + } + delete $t->{'_FocusIn'}{$w}; + delete $t->{'_FocusOut'}{$w}; + } +} + +# tkFocusGroup_In -- +# +# Handles the <FocusIn> event. Calls the FocusIn command for the newly +# focused widget in the focus group. +# +sub FG_In { + my($t, $w, $detail) = @_; + if (defined $t->{'_focus'} and $t->{'_focus'} eq $w) { + # This is already in focus + return; + } else { + $t->{'_focus'} = $w; + $t->{'_FocusIn'}{$w}->Call if exists $t->{'_FocusIn'}{$w}; + } +} + +# tkFocusGroup_Out -- +# +# Handles the <FocusOut> event. Checks if this is really a lose +# focus event, not one generated by the mouse moving out of the +# toplevel window. Calls the FocusOut command for the widget +# who loses its focus. +# +sub FG_Out { + my($t, $w, $detail) = @_; + if ($detail ne 'NotifyNonlinear' and $detail ne 'NotifyNonlinearVirtual') { + # This is caused by mouse moving out of the window + return; + } + unless (exists $t->{'_FocusOut'}{$w}) { + return; + } else { + $t->{'_FocusOut'}{$w}->Call; + delete $t->{'_focus'}; + } +} + +1; + +__END__ |