mirror of
https://github.com/gryf/urxvt-font.git
synced 2026-03-19 04:33:32 +01:00
95 lines
2.7 KiB
Perl
Executable File
95 lines
2.7 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
|
|
use strict;
|
|
|
|
# On-the-fly urxvt font resizing. Like ⌘{+,-}, on mac computers, just
|
|
# way more complicated.
|
|
#
|
|
# Noah K. Tilton <noahktilton@gmail.com>
|
|
#
|
|
# What it does:
|
|
#
|
|
# 1) Emits escape sequences to change the font size in the running console;
|
|
# 2) Persists the changed font size to xresources file.
|
|
#
|
|
# Note: the regexes will only work on xft xrdb entries
|
|
# For this script to work, ~/.Xdefauls should probably contain at
|
|
# least the following:
|
|
#
|
|
# urxvt*font
|
|
# urxvt*boldFont
|
|
# urxvt*boldColors: on
|
|
#
|
|
# References: man 3 urxvtperl
|
|
#
|
|
# Debugging: urxvt --perl-lib ${HOME}/.urxvt -pe font
|
|
|
|
|
|
use constant X_RESOURCES => "~/.config/xresources/fonts";
|
|
|
|
sub _resize_xft_string
|
|
{
|
|
my ($self, $key, $delta) = @_;
|
|
my (@pieces) = split /:/, $self->{term}->resource($key);
|
|
my (@resized) = ();
|
|
foreach my $piece (@pieces)
|
|
{
|
|
if ($piece =~ /pixelsize=(\d*)/)
|
|
{
|
|
my ($size) = $1;
|
|
my ($new_size) = $size + $delta;
|
|
if ($new_size < 1)
|
|
{
|
|
$new_size = 1;
|
|
}
|
|
$piece =~ s/pixelsize=$size/pixelsize=$new_size/;
|
|
}
|
|
push @resized, $piece;
|
|
}
|
|
join (":", @resized);
|
|
}
|
|
|
|
sub change_size
|
|
{
|
|
my ($self, $delta) = @_;
|
|
|
|
# Get xft strings with font size {+/-}1
|
|
my ($font_resized) = $self->_resize_xft_string( "font", $delta);
|
|
my ($font_resized_bold) = $self->_resize_xft_string( "boldFont", $delta);
|
|
|
|
# Update internal urxvt resource hash
|
|
# This is necessary or else the next resize won't have an updated
|
|
# value. "font" key is updated by urxvt when cmd_parse is called,
|
|
# but boldFont is *not*, at least with the escape sequences I'm
|
|
# emitting.
|
|
$self->{term}->resource("font", $font_resized);
|
|
$self->{term}->resource("boldFont", $font_resized_bold);
|
|
|
|
# Emit escape sequence to change fonts in rxvt runtime
|
|
$self->{term}->cmd_parse("\e]710;" . $font_resized . "\007");
|
|
|
|
# Persist the changes to xrdb
|
|
system("xrdb -load " . X_RESOURCES);
|
|
open(XRDB_MERGE, "| xrdb -merge") || die "can't fork: $!";
|
|
local $SIG{PIPE} = sub { die "xrdb pipe broke" };
|
|
print XRDB_MERGE "urxvt\*font: $font_resized\n"
|
|
. "urxvt\*boldFont: $font_resized_bold\n";
|
|
close XRDB_MERGE || die "bad xrdb: $! $?";
|
|
system("xrdb -edit " . X_RESOURCES);
|
|
}
|
|
|
|
sub on_user_command
|
|
{
|
|
# This function is called whenever some urxvt.keysym.*: perl:x:y
|
|
# mapped in X_RESOURCES is called; where x is this "module" (file,
|
|
# translation unit...), y is some function in this file (and this
|
|
# function, if defined), and $cmd is the argument z.
|
|
#
|
|
my ($self, $cmd) = @_;
|
|
|
|
if ($cmd =~ /font:(..crement)/) # {in, de, ex}
|
|
{
|
|
$self->change_size(($1 eq "increment") ? +1 : -1);
|
|
}
|
|
}
|