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# trackbar.pl
#
# This little script will do just one thing: it will draw a line each time you
# switch away from a window. This way, you always know just upto where you've
# been reading that window :) It also removes the previous drawn line, so you
# don't see double lines.
#
# Usage:
#
# The script works right out of the box, but if you want you can change
# the working by /set'ing the following variables:
#
# trackbar_string The characters to repeat to draw the bar
# trackbar_style The style for the bar, %r is red for example
# See formats.txt that came with irssi
#
# /mark is a command that will redraw the line at the bottom. However! This
# requires irssi version after 20021228. otherwise you'll get the error
# redraw: unknown command, and your screen is all goofed up :)
#
# /upgrade & buf.pl notice: This version tries to remove the trackbars before
# the upgrade is done, so buf.pl does not restore them, as they are not removeable
# afterwards by trackbar. Unfortiounatly, to make this work, trackbar and buf.pl
# need to be loaded in a specific order. Please experiment to see which order works
# for you (strangely, it differs from configuration to configuration, something I will
# try to fix in a next version)
#
# Authors:
# - Main maintainer & author: Peter 'kinlo' Leurs
# - Many thanks to Timo 'cras' Sirainen for placing me on my way
# - on-upgrade-remove-line patch by Uwe Dudenhoeffer
#
# Version history:
# 1.4: - Changed our's by my's so the irssi script header is valid
# - Removed utf-8 support. In theory, the script should work w/o any
# problems for utf-8, just set trackbar_string to a valid utf-8 character
# and everything *should* work. However, this script is being plagued by
# irssi internal bugs. The function Irssi::settings_get_str does NOT handle
# unicode strings properly, hence you will notice problems when setting the bar
# to a unicode char. For changing your bar to utf-8 symbols, read the line sub.
# 1.3: - Upgrade now removes the trackbars.
# - Some code cleanups, other defaults
# - /mark sets the line to the bottom
# 1.2: - Support for utf-8
# - How the bar looks can now be configured with trackbar_string
# and trackbar_style
# 1.1: - Fixed bug when closing window
# 1.0: - Initial release
#
#
# Call for help!
#
# There is a trackbar version 2.0 that properly handles resizes and immediate config change
# activation. However, there is/are some bug(s) in irssi's main buffer/window code that causes
# irssi to 'forget' lines, which is ofcourse completly unaccepteable. I haven't found the time
# nor do I know the irssi's internals enough to find and fix this bug, if you want to help, please
# contact me, I'll give you a copy of the 2.0 version that will immediatly show you the problems.
#
# Known bugs:
# - if you /clear a window, it will be uncleared when returning to the window
# - UTF-8 characters in the trackbar_string doesnt work. This is an irssi bug.
# - if you resize your irssi (in xterm or so) the bar is not resized
# - changing the trackbar style is only visible after returning to a window
# however, changing style/resize takes in effect after you left the window.
#
# Whishlist/todo:
# - instead of drawing a line, just invert timestamp or something,
# to save a line (but I don't think this is possible with current irssi)
# - some pageup keybinding possibility, to scroll up upto the trackbar
# - <@coekie> kinlo: if i switch to another window, in another split window, i
# want the trackbar to go down in the previouswindow in that splitwindow :)
# - < bob_2> anyway to clear the line once the window is read?
# - < elho> kinlo: wishlist item: a string that gets prepended to the repeating pattern
# - < elho> an option to still have the timestamp in front of the bar
# - < elho> oh and an option to not draw it in the status window :P
#
# BTW: when you have feature requests, mailing a patch that works is the fastest way
# to get it added :p
use strict;
use 5.6.1;
use Irssi;
use Irssi::TextUI;
use POSIX qw(strftime);
my $VERSION = "1.4";
my %IRSSI = (
authors => "Peter 'kinlo' Leurs",
contact => "peter\@pfoe.be",
name => "trackbar",
description => "Shows a bar where you've last read a window",
license => "GPLv2",
url => "http://www.pfoe.be/~peter/trackbar/",
changed => "Thu Feb 20 16:18:08 2003",
);
my %config;
Irssi::settings_add_str('trackbar', 'trackbar_string' => '-');
$config{'trackbar_string'} = Irssi::settings_get_str('trackbar_string');
Irssi::settings_add_str('trackbar', 'trackbar_style' => '%K');
$config{'trackbar_style'} = Irssi::settings_get_str('trackbar_style');
Irssi::signal_add(
'setup changed' => sub {
$config{'trackbar_string'} = Irssi::settings_get_str('trackbar_string');
$config{'trackbar_style'} = Irssi::settings_get_str('trackbar_style');
if ($config{'trackbar_style'} =~ /(?<!%)[^%]|%%|%$/) {
Irssi::print(
"trackbar: %RWarning!%n 'trackbar_style' seems to contain "
. "printable characters. Only use format codes (read "
. "formats.txt).", MSGLEVEL_CLIENTERROR);
}
}
);
Irssi::signal_add(
'window changed' => sub {
my (undef, $oldwindow) = @_;
if ($oldwindow) {
my $line = $oldwindow->view()->get_bookmark('trackbar');
$oldwindow->view()->remove_line($line) if defined $line;
$oldwindow->print(line($oldwindow->{'width'}), MSGLEVEL_NEVER);
$oldwindow->view()->set_bookmark_bottom('trackbar');
}
}
);
sub line {
my $width = shift;
my $string = $config{'trackbar_string'};
$string = '-' unless defined $string;
# There is a bug in irssi's utf-8 handling on config file settings, as you
# can reproduce/see yourself by the following code sniplet:
#
# my $quake = pack 'U*', 8364; # EUR symbol
# Irssi::settings_add_str 'temp', 'temp_foo' => $quake;
# Irssi::print length $quake;
# # prints 1
# Irssi::print length Irssi::settings_get_str 'temp_foo';
# # prints 3
#
#
# Trackbar used to have a workaround, but on recent versions of perl/irssi
# it does no longer work. Therefore, if you want your trackbar to contain
# unicode characters, uncomment the line below for a nice full line, or set
# the string to whatever char you want.
# $string = pack('U*', 0x2500);
my $length = length $string;
if ($length == 0) {
$string = '-';
$length = 1;
}
my $times = $width / $length;
$times = int(1 + $times) if $times != int($times);
$string =~ s/%/%%/g;
return $config{'trackbar_style'} . substr($string x $times, 0, $width);
}
# Remove trackbars on upgrade - but this doesn't really work if the scripts are not loaded in the correct order... watch out!
Irssi::signal_add_first( 'session save' => sub {
for my $window (Irssi::windows) {
next unless defined $window;
my $line = $window->view()->get_bookmark('trackbar');
$window->view()->remove_line($line) if defined $line;
}
}
);
sub goto_trackbar {
my $window = Irssi::active_win();
my $line = $window->view()->get_bookmark('trackbar');
if ($line) {
$window->command("scrollback goto ". strftime("%d %H:%M:%S", localtime($line->{'info'}->{'time'})));
} else {
$window->printformat(MSGLEVEL_CLIENTCRAP, 'trackbar_not_found');
}
}
sub cmd_mark {
my $window = Irssi::active_win();
# return unless defined $window;
my $line = $window->view()->get_bookmark('trackbar');
$window->view()->remove_line($line) if defined $line;
$window->print(line($window->{'width'}), MSGLEVEL_NEVER);
$window->view()->set_bookmark_bottom('trackbar');
Irssi::command("redraw");
}
sub trackbar_runsub {
my ($data, $server, $item) = @_;
$data =~ s/\s+$//g;
if ($data) {
Irssi::command_runsub('trackbar', $data, $server, $item);
} else {
goto_trackbar();
}
}
Irssi::command_bind('trackbar', 'trackbar_runsub');
Irssi::command_bind('mark', 'cmd_mark');
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