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root |
1.1 |
#! perl |
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root |
1.12 |
=head1 NAME |
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readline - improve readline editing (enabled by default) |
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=head1 DESCRIPTION |
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A support package that tries to make editing with readline easier. At |
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the moment, it reacts to clicking shift-left mouse button by trying to |
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move the text cursor to this position. It does so by generating as many |
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cursor-left or cursor-right keypresses as required (this only works |
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for programs that correctly support wide characters). |
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To avoid too many false positives, this is only done when: |
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=over 4 |
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=item - the tty is in ICANON state. |
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=item - the text cursor is visible. |
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=item - the primary screen is currently being displayed. |
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=item - the mouse is on the same (multi-row-) line as the text cursor. |
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=back |
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The normal selection mechanism isn't disabled, so quick successive clicks |
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might interfere with selection creation in harmless ways. |
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=cut |
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root |
1.6 |
use POSIX (); |
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my $termios = new POSIX::Termios; |
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root |
1.7 |
sub on_init { |
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my ($self) = @_; |
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$self->{enabled} = 1; |
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push @{ $self->{term}{option_popup_hook} }, sub { |
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("readline" => $self->{enabled}, sub { $self->{enabled} = shift }) |
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}; |
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() |
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} |
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root |
1.1 |
sub on_button_press { |
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my ($self, $event) = @_; |
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root |
1.8 |
$self->current_screen || $self->hidden_cursor || !$self->{enabled} |
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and return; |
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my $mask = $self->ModLevel3Mask | $self->ModMetaMask |
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| urxvt::ShiftMask | urxvt::ControlMask; |
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sf-exg |
1.11 |
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root |
1.8 |
($event->{state} & $mask) == urxvt::ShiftMask |
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or return; |
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root |
1.4 |
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root |
1.6 |
$termios->getattr ($self->pty_fd) |
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or return; |
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root |
1.8 |
$termios->getlflag & &POSIX::ICANON |
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and return; |
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root |
1.6 |
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root |
1.1 |
my ($row, $col) = $self->screen_cur; |
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my $line = $self->line ($row); |
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my $cur = $line->offset_of ($row, $col); |
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my $ofs = $line->offset_of ($event->{row}, $event->{col}); |
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root |
1.10 |
$ofs >= 0 && $ofs < $line->l |
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or return; |
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root |
1.1 |
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root |
1.10 |
my $diff = $ofs - $cur; |
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my $move; |
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root |
1.3 |
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root |
1.10 |
if ($diff < 0) { |
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($ofs, $cur) = ($cur, $ofs); |
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$move = "\x1b[D"; |
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} else { |
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$move = "\x1b[C"; |
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} |
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root |
1.3 |
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root |
1.10 |
my $skipped = substr $line->t, $cur, $ofs - $cur; |
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$skipped =~ s/\x{ffff}//g; |
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root |
1.9 |
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root |
1.10 |
$self->tt_write ($move x length $skipped); |
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root |
1.1 |
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root |
1.10 |
1 |
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root |
1.1 |
} |
