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# Display current position in scrollback in a statusbar item named 'position'.
# Copyright (C) 2010 Simon Ruderich & Tom Feist
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use warnings;
use Irssi;
use Irssi::TextUI;
use POSIX qw(ceil);
{ package Irssi::Nick }
our $VERSION = '0.1';
our %IRSSI = (
authors => 'Simon Ruderich, Tom Feist',
contact => 'simon@ruderich.org, shabble+irssi@metavore.org',
name => 'sb_position',
description => 'Displays current position in scrollback.',
license => 'GPLv3 or later',
changed => '2010-12-02'
);
my ($buf, $size, $pos, $height, $empty);
my ($pages, $cur_page, $percent);
init();
sub init {
# (re-)register it so we can access the WIN_REC object directly.
Irssi::signal_register({'gui page scrolled' => [qw/Irssi::UI::Window/]});
# primary update signal.
Irssi::signal_add('gui page scrolled', \&update_position);
Irssi::statusbar_item_register('position', 0, 'position_statusbar');
Irssi::signal_add("window changed", \&update_position);
Irssi::signal_add_last("command clear", \&update_cmd_shim);
Irssi::signal_add_last("command scrollback", \&update_cmd_shim);
# Irssi::signal_add_last("gui print text finished", sig_statusbar_more_updated);
update_position(Irssi::active_win());
}
sub update_cmd_shim {
my ($cmd, $server, $witem) = @_;
my $win = $witem ? $witem->window : Irssi::active_win;
update_position($win);
}
sub update_position {
my $win = shift;
return unless $win;
my $view = $win->view;
$pos = $view->{ypos};
$buf = $view->{buffer};
$height = $view->{height};
$size = $buf->{lines_count};
$empty = $view->{empty_linecount};
$empty = 0 unless $empty;
$pages = ceil($size / $height);
$pages = 1 unless $pages;
my $buf_pos_cache = $size - $pos + ($height - $empty) - 1;
if ($pos == -1 or $size < $height) {
$cur_page = $pages;
$percent = 100;
} elsif ($pos > ($size - $height)) {
$cur_page = 1;
$percent = 0;
} else {
$cur_page = ceil($buf_pos_cache / $height);
$percent = ceil($buf_pos_cache / $size * 100);
}
Irssi::statusbar_items_redraw('position');
}
sub position_statusbar {
my ($statusbar_item, $get_size_only) = @_;
# Alternate view.
#my $sb = "p=$pos, s=$size, h=$height, pp:$cur_page/$pages $percent%%";
my $sb = "Page: $cur_page/$pages $percent%%";
$statusbar_item->default_handler($get_size_only, "{sb $sb}", 0, 1);
}
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