sb_position: added a (presumably) working version of rudi_s' scrollback position script.

1 files changed, 90 insertions, 0 deletions

diff --git a/sb-position/sb_position.pl b/sb-position/sb_position.pl
new file mode 100644
index 0000000..813ee31
--- /dev/null
+++ b/sb-position/sb_position.pl
@@ -0,0 +1,90 @@
+
+# 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 POSIX qw(ceil);
+
+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, $height);
+my ($pages, $cur_page, $buf_percent);
+
+# (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_position);
+Irssi::signal_add_last("command scrollback", \&update_position);
+# Irssi::signal_add_last("gui print text finished", sig_statusbar_more_updated);
+
+init();
+
+sub init {
+    update_position(Irssi::active_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};
+
+    $pages    = ceil($size / $height);
+    $pages    = 1 unless $pages;
+
+    $cur_page = ceil(($size - $pos + $height -1) / $height);
+
+    Irssi::statusbar_items_redraw('position');
+}
+
+sub position_statusbar {
+    my ($statusbar_item, $get_size_only) = @_;
+
+    my $percent;
+    if ($size < $height) {
+        $percent = 100;
+    } else {
+        $percent = ceil(($size - $pos - 1 + $height) / $size * 100);
+    }
+
+    # 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);
+}