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package ZincText;
sub new {
my $proto = shift;
my $type = ref($proto) || $proto;
my ($zinc) = @_;
my $self = {};
$zinc->bind('text', '<1>' => sub {startSel($zinc)});
$zinc->bind('text', '<B1-Motion>' => sub {extendSel($zinc)});
$zinc->bind('text', '<Shift-B1-Motion>' => sub {extendSel($zinc)});
$zinc->bind('text', '<Shift-1>' => sub {
my $e = $zinc->XEvent();
my($x, $y) = ($e->x, $e->y);
$zinc->select('adjust', 'current', "\@$x,$y"); });
$zinc->bind('text', '<Left>' => sub {moveCur($zinc, -1);});
$zinc->bind('text', '<Right>' => sub {moveCur($zinc, 1);});
$zinc->bind('text', '<Control-a>' => sub {setCur($zinc, 0);});
$zinc->bind('text', '<Home>' => sub {setCur($zinc, 0);});
$zinc->bind('text', '<Control-e>' => sub {setCur($zinc, 'end');});
$zinc->bind('text', '<End>' => sub {setCur($zinc, 'end');});
$zinc->bind('text', '<KeyPress>' => sub {insertChar($zinc);});
$zinc->bind('text', '<Shift-KeyPress>' => sub {insertChar($zinc);});
$zinc->bind('text', '<Return>' => sub {
$zinc->insert($zinc->focus(), 'insert', "\n"); });
$zinc->bind('text', '<BackSpace>' => sub {textDel($zinc, -1)});
$zinc->bind('text', '<Delete>' => sub {textDel($zinc, 0)});
$zinc->bind('text', '<Control-d>' => sub {
$zinc->dchars($zinc->focus(), 'sel.first', 'sel.last'); });
$zinc->bind('text', '<Control-y>' => sub {
$zinc->insert($zinc->focus(), 'insert', Tk::selection('get')); });
bless ($self, $type);
return $self;
}
sub insertChar {
my ($w) = @_;
my $c = $w->XEvent->A();
$w->insert($w->focus(), 'insert', $c);
}
sub setCur {
my ($w, $where) = @_;
my $it = $w->focus();
$w->cursor($it, $where);
}
sub moveCur {
my ($w, $dir) = @_;
my $it = $w->focus();
my $index = $w->index($it, 'insert');
$w->cursor($it, $index + $dir);
}
sub startSel {
my($w) = @_;
my $e = $w->XEvent;
my($x, $y) = ($e->x, $e->y);
$w->cursor('current', "\@$x,$y");
$w->focus('current');
$w->Tk::focus;
$w->select('from', 'current', "\@$x,$y");
}
sub extendSel {
my($w) = @_;
my $e = $w->XEvent;
my($x, $y) = ($e->x, $e->y);
$w->select('to', 'current', "\@$x,$y");
}
sub textDel {
my($w, $dir) = @_;
my $it = $w->focus();
my $ind = $w->index($it, 'insert') + $dir;
$w->dchars($it, $ind) if ($ind >= 0);
}
1;
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