339 lines
8.2 KiB
Perl
339 lines
8.2 KiB
Perl
#! perl -w
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# Author: Bert Muennich
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# Website: http://www.github.com/muennich/urxvt-perls
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# Version: git-20100818
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# License: GPLv2
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# Use keyboard shortcuts to select and copy text.
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# Usage: put the following lines in your .Xdefaults:
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# URxvt.perl-ext-common: ...,keyboard-select
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# URxvt.keysym.M-Escape: perl:keyboard-select:activate
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# Use Meta-Escape to activate selection mode, then use the following keys:
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# h/j/k/l: Move cursor left/down/up/right (also with arrow keys)
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# g/G/0/^/$/H/M/L: More vi-like cursor movement keys
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# Ctrl-f/b: Move cursor down/up one screen
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# v/V/Ctrl-v: Toggle normal/linewise/blockwise selection
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# y/Return: Copy selection to primary buffer, Return: deactivate afterwards
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# q/Escape: Deactivate keyboard selection mode
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use strict;
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sub on_user_command {
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my ($self, $cmd) = @_;
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if ($cmd eq 'keyboard-select:activate') {
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if (not $self->{active}) {
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activate($self);
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}
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}
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()
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}
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sub key_press {
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my ($self, $event, $keysym) = @_;
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my $char = chr($keysym);
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if ($keysym == 0xff1b || lc($char) eq 'q') {
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deactivate($self);
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} elsif ($char eq 'y' || $keysym == 0xff0d) {
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if ($self->{select}) {
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if ($self->{select} eq 'b') {
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$self->selection($self->{selection});
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$self->selection_grab($event->{time});
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} else {
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my ($br, $bc, $er, $ec) = calc_span($self);
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$ec = $self->line($er)->l if $self->{select} eq 'l';
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$self->selection_beg($br, $bc);
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$self->selection_end($er, $ec);
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$self->selection_make($event->{time});
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}
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if ($char eq 'y') {
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if ($self->{select} ne 'b') {
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$self->selection_beg(1, 0);
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$self->selection_end(1, 0);
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}
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$self->{select} = '';
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$self->want_refresh();
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} else {
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deactivate($self);
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}
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}
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} elsif ($char eq 'V') {
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toggle_select($self, 'l');
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} elsif ($char eq 'v') {
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if ($event->{state} & urxvt::ControlMask) {
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toggle_select($self, 'b');
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} else {
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toggle_select($self, 'n');
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}
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} elsif ($char eq 'k' || $keysym == 0xff52) {
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move_cursor($self, 'k');
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} elsif ($char eq 'j' || $keysym == 0xff54) {
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move_cursor($self, 'j');
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} elsif ($char eq 'h' || $keysym == 0xff51) {
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move_cursor($self, 'h');
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} elsif ($char eq 'l' || $keysym == 0xff53) {
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move_cursor($self, 'l');
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} elsif ('gG0^$HML' =~ m/\Q$char\E/ ||
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('fb' =~ m/\Q$char\E/ && $event->{state} & urxvt::ControlMask)) {
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move_cursor($self, $char);
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}
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return 1;
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}
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sub move_cursor {
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my ($self, $key) = @_;
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my ($cr, $cc) = $self->screen_cur();
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my $line = $self->line($cr);
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if ($self->{active}) {
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if ($key eq 'k' && $line->beg > $self->top_row) {
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$cr = $line->beg - 1;
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} elsif ($key eq 'j' && $line->end < $self->nrow - 1) {
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$cr = $line->end + 1;
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} elsif ($key eq 'h' && $self->{offset} > 0) {
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$self->{offset} = $line->l - 1 if $self->{offset} >= $line->l;
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--$self->{offset};
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} elsif ($key eq 'l' && $self->{offset} < $line->l - 1) {
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++$self->{offset};
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} elsif ($key eq 'f') {
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$cr += $self->nrow - 1;
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$cr = $self->nrow - 1 if $cr >= $self->nrow;
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} elsif ($key eq 'b') {
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$cr -= $self->nrow - 1;
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$cr = $self->top_row if $cr < $self->top_row;
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} elsif ($key eq 'g') {
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($cr, $self->{offset}) = ($self->top_row, 0);
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} elsif ($key eq 'G') {
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($cr, $self->{offset}) = ($self->nrow - 1, 0);
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} elsif ($key eq '0') {
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$self->{offset} = 0;
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} elsif ($key eq '^') {
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my $ltxt = $self->special_decode($line->t);
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while ($ltxt =~ s/^( *)\t/$1 . " " x (8 - length($1) % 8)/e) {}
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$self->{offset} = $ltxt =~ m/^ +/ ? $+[0] : 0;
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} elsif ($key eq '$') {
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$self->{offset} = $line->l - 1;
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} elsif ($key eq 'H') {
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$cr = $self->view_start();
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} elsif ($key eq 'M') {
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$cr = $self->view_start() + $self->nrow / 2;
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} elsif ($key eq 'L') {
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$cr = $self->view_start() + $self->nrow - 1;
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}
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$line = $self->line($cr);
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($cr, $cc) = $line->coord_of($self->{offset} < $line->l ? $self->{offset} :
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$line->l - 1);
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$self->screen_cur($cr, $cc);
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# scroll the current cursor position into visible area
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if ($cr < $self->view_start()) {
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$self->view_start($cr);
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} elsif ($cr >= $self->view_start() + $self->nrow) {
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$self->view_start($cr - $self->nrow + 1);
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}
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status_area($self);
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$self->want_refresh();
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}
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()
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}
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sub tt_write {
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return 1;
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}
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sub refresh {
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my ($self) = @_;
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my $reverse_cursor = $self->{select} ne 'l';
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my ($cr, $cc) = $self->screen_cur();
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if ($self->{select}) {
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my ($br, $bc, $er, $ec) = calc_span($self);
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if ($self->{select} eq 'b') {
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delete $self->{selection} if $self->{selection};
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my $r = $br;
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while ($r <= $er) {
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my $line = $self->line($r);
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if ($bc < $line->l) {
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$self->{selection} .= substr($line->t, $bc, $ec - $bc);
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my ($br, $bc) = $line->coord_of($bc);
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my ($er, $ec) = $line->coord_of($ec <= $line->l ? $ec : $line->l);
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$self->scr_xor_span($br, $bc, $er, $ec, urxvt::RS_RVid);
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} elsif ($r == $cr) {
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$reverse_cursor = 0;
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}
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$self->{selection} .= "\n" if $line->end < $er;
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$r = $line->end + 1;
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}
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} else {
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$self->scr_xor_span($br, $bc, $er, $ec, urxvt::RS_RVid);
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}
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if ($reverse_cursor) {
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# make the cursor visible again
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$self->scr_xor_span($cr, $cc, $cr, $cc + 1, urxvt::RS_RVid);
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}
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}
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()
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}
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sub activate {
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my ($self) = @_;
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$self->{active} = 1;
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$self->{select} = "";
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($self->{oldcr}, $self->{oldcc}) = $self->screen_cur();
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$self->{old_view_start} = $self->view_start();
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$self->{old_pty_ev_events} = $self->pty_ev_events(urxvt::EV_NONE);
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my $line = $self->line($self->{oldcr});
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$self->{offset} = $line->offset_of($self->{oldcr}, $self->{oldcc});
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$self->selection_beg(1, 0);
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$self->selection_end(1, 0);
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$self->enable(
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key_press => \&key_press,
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refresh_begin => \&refresh,
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refresh_end => \&refresh,
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tt_write => \&tt_write,
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);
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$self->{overlay_len} = 0;
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status_area($self);
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()
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}
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sub deactivate {
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my ($self) = @_;
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$self->selection_beg(1, 0);
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$self->selection_end(1, 0);
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delete $self->{overlay} if $self->{overlay};
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delete $self->{selection} if $self->{selection};
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$self->disable("key_press", "refresh_begin", "refresh_end", "tt_write");
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$self->screen_cur($self->{oldcr}, $self->{oldcc});
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$self->view_start($self->{old_view_start});
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$self->pty_ev_events($self->{old_pty_ev_events});
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$self->want_refresh();
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$self->{active} = 0;
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()
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}
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sub status_area {
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my ($self) = @_;
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my ($stat, $stat_len);
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if ($self->{select}) {
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$stat = "V";
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if ($self->{select} ne 'n') {
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$stat .= uc($self->{select});
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}
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$stat .= " -- ";
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}
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if ($self->top_row == 0) {
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$stat .= "All";
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} elsif ($self->view_start() == $self->top_row) {
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$stat .= "Top";
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} elsif ($self->view_start() == 0) {
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$stat .= "Bot";
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} else {
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$stat .= sprintf("%2d%",
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($self->top_row - $self->view_start) * 100 / $self->top_row);
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}
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$stat_len = length($stat);
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if (!$self->{overlay} || $self->{overlay_len} != $stat_len) {
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delete $self->{overlay} if $self->{overlay};
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$self->{overlay} = $self->overlay(-1, -1, $stat_len, 1,
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urxvt::OVERLAY_RSTYLE, 0);
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$self->{overlay_len} = $stat_len;
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}
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$self->{overlay}->set(0, 0, $self->special_encode($stat));
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$self->{overlay}->show();
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()
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}
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sub toggle_select {
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my ($self, $mode) = @_;
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if ($self->{active}) {
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if ($self->{select} eq $mode) {
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$self->{select} = '';
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} else {
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if (not $self->{select}) {
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($self->{ar}, $self->{ac}) = $self->screen_cur();
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}
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$self->{select} = $mode;
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}
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status_area($self);
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$self->want_refresh();
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}
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()
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}
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sub calc_span {
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my ($self) = @_;
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my ($cr, $cc) = $self->screen_cur();
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my ($br, $bc, $er, $ec);
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if ($self->{select} eq 'b') {
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$br = $self->line($cr)->beg;
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$bc = $self->line($cr)->offset_of($cr, $cc);
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$er = $self->line($self->{ar})->beg;
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$ec = $self->line($self->{ar})->offset_of($self->{ar}, $self->{ac});
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($br, $er) = ($er, $br) if $br > $er;
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($bc, $ec) = ($ec, $bc) if $bc > $ec;
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} else {
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if ($cr < $self->{ar}) {
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($br, $bc, $er, $ec) = ($cr, $cc, $self->{ar}, $self->{ac});
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} elsif ($cr > $self->{ar}) {
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($br, $bc, $er, $ec) = ($self->{ar}, $self->{ac}, $cr, $cc);
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} else {
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($br, $er) = ($cr, $cr);
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($bc, $ec) = $cc < $self->{ac} ? ($cc, $self->{ac}) : ($self->{ac}, $cc);
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}
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}
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if ($self->{select} eq 'l') {
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($br, $er) = ($self->line($br)->beg, $self->line($er)->end);
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($bc, $ec) = (0, $self->ncol);
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} else {
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++$ec;
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}
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return ($br, $bc, $er, $ec);
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}
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