diff options
Diffstat (limited to '')
| -rw-r--r-- | prompt_info/visual.pl | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/prompt_info/visual.pl b/prompt_info/visual.pl new file mode 100644 index 0000000..1413d0d --- /dev/null +++ b/prompt_info/visual.pl @@ -0,0 +1,191 @@ +use strict; +use warnings; + +use Irssi; +use Irssi::TextUI; # for sbar_items_redraw +use Data::Dumper; + + + +our $VERSION = "0.1"; +our %IRSSI = + ( + authors => "shabble", + contact => 'shabble+irssi@metavore.org, shabble@#irssi/Freenode', + name => "prompt_info", + description => "Helper script for dynamically adding text " + . "into the input-bar prompt.", + license => "Public Domain", + changed => "24/7/2010" + ); + +sub DEBUG () { 1 } +#sub DEBUG () { 0 } + +my $region_active = 0; + +my ($term_w, $term_h) = (0, 0); + +# visual region selected. +my ($region_start, $region_end) = (0, 0); +my $region_content = ''; + +sub update_terminal_size { + + my @stty_data = qx/stty -a/; + my $line = $stty_data[0]; + + # linux + # speed 38400 baud; rows 36; columns 126; line = 0; + if ($line =~ m/rows (\d+); columns (\d+);/) { + $term_h = $1; + $term_w = $2; + # osx + # speed 9600 baud; 40 rows; 235 columns; + } elsif ($line =~ m/(\d+) rows; (\d+) columns;/) { + $term_h = $1; + $term_w = $2; + } else { + # guess? + $term_h = 24; + $term_w = 80; + } + + print "Terminal detected as $term_w cols by $term_h rows" if DEBUG; +} + +sub visual_subcmd_handler { + my ($data, $server, $item) = @_; + $data =~ s/\s+$//g; # strip trailing whitespace. + Irssi::command_runsub('visual', $data, $server, $item); +} + +sub init { + + # misc faff + Irssi::command_bind('visual', \&visual_subcmd_handler); + Irssi::command_bind('visual toggle', \&cmd_toggle_visual); + Irssi::command_bind('visual clear', \&cmd_clear_visual); + + Irssi::command("^BIND ^F /visual toggle"); + Irssi::command("^BIND ^G /visual clear"); + + Irssi::command_bind 'print_test', + sub { + Irssi::gui_printtext(0, 0, '%8hello there%n'); + }; + + # redraw interception + Irssi::signal_add_last('command redraw', \&augment_redraw); + Irssi::signal_add_first('gui key pressed', \&ctrl_l_intercept); + + # for updating the overlay. + Irssi::signal_add_last ('gui key pressed', \&key_pressed); + + # things to refresh the overlay for. + Irssi::signal_add('window changed', \&uberprompt_refresh); + Irssi::signal_add('window name changed', \&uberprompt_refresh); + Irssi::signal_add('window changed automatic', \&uberprompt_refresh); + Irssi::signal_add('window item changed', \&uberprompt_refresh); + + Irssi::signal_add('terminal resized', \&update_terminal_size); + + # so we know where the bottom line is + update_terminal_size(); + + +} +sub cmd_clear_visual { + _clear_visual_region(); + #refresh_visual_overlay(); + Irssi::statusbar_items_redraw('input'); +} + + +sub augment_redraw { + print "Redraw called" if DEBUG; + uberprompt_refresh(); + Irssi::timeout_add_once(10, \&refresh_visual_overlay, 0); +} + + +sub cmd_toggle_visual { + + $region_active = not $region_active; + + if ($region_active) { + $region_start = _pos(); + $region_end = 0; # reset end marker. + print "visual mode started at $region_start" if DEBUG; + } else { + $region_end = _pos(); + print "Visual mode ended at $region_end" if DEBUG; + + if ($region_end > $region_start) { + my $input = Irssi::parse_special('$L', 0, 0); + my $str = substr($input, $region_start, $region_end - $region_start); + print "Region selected: $str" if DEBUG; + } else { + print "Invalid region selection: [ $region_start - $region_end ]" + if DEBUG; + $region_start = $region_end = 0; + } + cmd_clear_visual(); + } +} + +sub ctrl_l_intercept { + my $key = shift; + + if ($key == 12) { # C-l + print "C-l pressed" if DEBUG; + Irssi::command("redraw"); + Irssi::signal_stop(); + } elsif ($key == 10) { # RET + _clear_visual_region(); + } +} + +sub key_pressed { + # this handler needs to be last so the actual character is printed by irssi + # before we overlay on it. Otherwise things are all a bit off-by-1 + return unless $region_active; + + refresh_visual_overlay(); +} + +sub _clear_visual_region { + print "Clearing Region markers" if DEBUG; + $region_end = 0; + $region_start = 0; +} + + +sub refresh_visual_overlay { + + my $end_pos = $region_end; + $end_pos ||= _pos(); # if not set, take current position as end. + + my $len = $end_pos - $region_start; + return unless $len; # no point drawing an empty overlay + + my $input = Irssi::parse_special('$L'); + my $offset = $prompt_item->{size} + $region_start; + + my $text = substr($input, $region_start, $len); + + print "printing '$text' at $offset [$region_start, $end_pos] ($len)" if DEBUG; + + $text = '%8' . $text . '%8'; + _draw_overlay($offset, $text, $len); + +} + +sub _draw_overlay { + my ($offset, $text, $len) = @_; + Irssi::gui_printtext($offset, $term_h, $text); +} + +sub _pos { + return Irssi::gui_input_get_pos(); +} |