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- # NOTE: Derived from ..\blib\lib\Tk\Scrollbar.pm.
- # Changes made here will be lost when autosplit is run again.
- # See AutoSplit.pm.
- package Tk::Scrollbar;
-
- #line 116 "..\blib\lib\Tk\Scrollbar.pm (autosplit into ..\blib\lib\auto\Tk\Scrollbar\ButtonDown.al)"
- # tkScrollButtonDown --
- # This procedure is invoked when a button is pressed in a scrollbar.
- # It changes the way the scrollbar is displayed and takes actions
- # depending on where the mouse is.
- #
- # Arguments:
- # w - The scrollbar widget.
- # x, y - Mouse coordinates.
-
- sub ButtonDown
- {my $w = shift;
- my $e = $w->XEvent;
- my $element = $w->identify($e->x,$e->y);
- $w->configure('-activerelief' => 'sunken');
- if ($e->b == 1 and
- (defined($element) && $element eq 'slider'))
- {
- $w->StartDrag($e->x,$e->y);
- }
- elsif ($e->b == 2 and
- (defined($element) && $element =~ /^(trough[12]|slider)$/o))
- {
- my $pos = $w->fraction($e->x, $e->y);
- my($head, $tail) = $w->get;
- my $len = $tail - $head;
-
- $head = $pos - $len/2;
- $tail = $pos + $len/2;
- if ($head < 0) {
- $head = 0;
- $tail = $len;
- }
- elsif ($tail > 1) {
- $head = 1 - $len;
- $tail = 1;
- }
- $w->ScrlToPos($head);
- $w->set($head, $tail);
-
- $w->StartDrag($e->x,$e->y);
- }
- else
- {
- $w->Select($element,'initial');
- }
- }
-
- # end of Tk::Scrollbar::ButtonDown
- 1;
-