diff options
Diffstat (limited to 'prompt_info')
| -rw-r--r-- | prompt_info/prompt_replace.pl | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/prompt_info/prompt_replace.pl b/prompt_info/prompt_replace.pl new file mode 100644 index 0000000..30120f7 --- /dev/null +++ b/prompt_info/prompt_replace.pl @@ -0,0 +1,346 @@ +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 $prompt_data = undef; +my $prompt_item = undef; + +my $region_active = 0; + +my ($term_w, $term_h) = (0, 0); + +# visual region selected. +my ($region_start, $region_end) = (0, 0); +my $region_content = ''; + +my $prompt_format = ''; + +init(); + +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 $term_h rows" if DEBUG; +} + +sub prompt_subcmd_handler { + my ($data, $server, $item) = @_; + $data =~ s/\s+$//g; # strip trailing whitespace. + Irssi::command_runsub('prompt', $data, $server, $item); +} + +sub visual_subcmd_handler { + my ($data, $server, $item) = @_; + $data =~ s/\s+$//g; # strip trailing whitespace. + Irssi::command_runsub('visual', $data, $server, $item); +} + +sub init { + + Irssi::statusbar_item_register ('uberprompt', 0, 'uberprompt_draw'); + + Irssi::settings_add_str('uberprompt', 'uberprompt_format', '[$*] '); + + Irssi::command_bind("prompt", \&prompt_subcmd_handler); + Irssi::command_bind('prompt on', \&replace_prompt_items); + Irssi::command_bind('prompt off', \&restore_prompt_items); + Irssi::command_bind('prompt set', + sub { Irssi::signal_emit 'change prompt', shift; }); + Irssi::command_bind('prompt clear', + sub { Irssi::signal_emit 'change prompt', '$p'; }); + + # misc faff + Irssi::command_bind('visual', \&visual_subcmd_handler); + Irssi::command_bind('visual toggle', \&cmd_toggle_visual); + Irssi::command_bind('visual clear', \&cmd_clear_visual); + + Irssi::command("^BIND ^F /visual toggle"); + Irssi::command("^BIND ^G /visual clear"); + + Irssi::command_bind 'print_test', + sub { + Irssi::gui_printtext(0, 0, '%8hello there%n'); + }; + + # redraw interception + Irssi::signal_add_last('command redraw', \&augment_redraw); + Irssi::signal_add_first('gui key pressed', \&ctrl_l_intercept); + + # for updating the overlay. + Irssi::signal_add_last ('gui key pressed', \&key_pressed); + + # things to refresh the overlay for. + Irssi::signal_add('window changed', \&uberprompt_refresh); + Irssi::signal_add('window name changed', \&uberprompt_refresh); + Irssi::signal_add('window changed automatic', \&uberprompt_refresh); + Irssi::signal_add('window item changed', \&uberprompt_refresh); + + Irssi::signal_add('terminal resized', \&update_terminal_size); + Irssi::signal_add('setup changed', \&reload_settings); + + # so we know where the bottom line is + update_terminal_size(); + + # intialise the prompt format. + reload_settings(); + + # install our statusbars. + replace_prompt_items(); + + # the actual API signals. + Irssi::signal_register({'change prompt' => [qw/string/]}); + Irssi::signal_add('change prompt' => \&change_prompt_sig); + + Irssi::signal_register({'prompt changed' => [qw/string int/]}); +} + +sub change_prompt_sig { + my ($text) = @_; + + $text = '$p' . $text; + print "Got prompt change sig with: $text" if DEBUG; + + my $changed; + $changed = defined $prompt_data ? $prompt_data ne $text : 1; + + $prompt_data = $text; + + if ($changed) { + print "Redrawing prompt" if DEBUG; + uberprompt_refresh(); + } +} + + +sub UNLOAD { + # remove uberprompt and return the original ones. + restore_prompt_items(); +} + +sub reload_settings { + my $new = Irssi::settings_get_str('uberprompt_format'); + if ($prompt_format ne $new) { + print "Updated prompt format" if DEBUG; + $prompt_format = $new; + Irssi::abstracts_register(['uberprompt', $prompt_format]); + } +} + +sub uberprompt_draw { + my ($sb_item, $get_size_only) = @_; + + my $default_prompt = ''; + + my $window = Irssi::active_win; + + # hack to produce the same defaults as prompt/prompt_empty sbars. + + if (scalar( () = $window->items )) { + $default_prompt = '{uberprompt $[.15]itemname}'; + } else { + $default_prompt = '{uberprompt $winname}'; + } + + my $p_copy = $prompt_data; + + if (defined $prompt_data) { + # replace the special marker '$p' with the original prompt. + $p_copy =~ s/\$p/$default_prompt/; + } else { + $p_copy = $default_prompt; + } + print "Redrawing with: $p_copy, size-only: $get_size_only" if DEBUG; + + $prompt_item = $sb_item; + + my $ret = $sb_item->default_handler($get_size_only, $p_copy, '', 0); + + Irssi::signal_emit('prompt changed', $p_copy, $sb_item->{size}); + + return $ret; +} + +sub augment_redraw { + print "Redraw called" if DEBUG; + uberprompt_refresh(); + Irssi::timeout_add_once(10, \&refresh_visual_overlay, 0); +} + +sub uberprompt_refresh { + Irssi::statusbar_items_redraw('uberprompt'); +} + + +sub cmd_clear_visual { + _clear_visual_region(); + #refresh_visual_overlay(); + Irssi::statusbar_items_redraw('input'); +} + +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, $text); +} + +sub replace_prompt_items { + # remove existing ones. + print "Removing original prompt" if DEBUG; + + _sbar_command('prompt', 'remove', 'prompt'); + _sbar_command('prompt', 'remove', 'prompt_empty'); + + # add the new one. + + _sbar_command('prompt', 'add', 'uberprompt', + qw/-alignment left -before input -priority '-1'/); + + _sbar_command('prompt', 'position', '100'); +} + +sub restore_prompt_items { + + _sbar_command('prompt', 'remove', 'uberprompt'); + + print "Restoring original prompt" if DEBUG; + + _sbar_command('prompt', 'add', 'prompt', + qw/-alignment left -before input -priority '-1'/); + _sbar_command('prompt', 'add', 'prompt_empty', + qw/-alignment left -after prompt -priority '-1'/); + + _sbar_command('prompt', 'position', '100'); + +} + +sub _sbar_command { + my ($bar, $cmd, $item, @args) = @_; + + my $args_str = join ' ', @args; + + $args_str .= ' ' if length $args_str && defined $item; + + my $command = sprintf 'STATUSBAR %s %s %s%s', + $bar, $cmd, $args_str, defined($item)?$item:''; + + print "Running command: $command" if DEBUG; + Irssi::command($command); +} + +sub _pos { + return Irssi::gui_input_get_pos(); +} + + +# bit of fakery so things don't complain about the lack of prompt_info (hoepfully) + +%Irssi::Script::prompt_info:: = (); |