1#!/bin/sh 2# $NetBSD: ctwm_font_size,v 1.1 2020/10/12 11:07:24 nia Exp $ 3# 4# Copyright (c) 2020 The NetBSD Foundation, Inc. 5# All rights reserved. 6# 7# This code is derived from software contributed to The NetBSD Foundation 8# by Nia Alarie. 9# 10# Redistribution and use in source and binary forms, with or without 11# modification, are permitted provided that the following conditions 12# are met: 13# 1. Redistributions of source code must retain the above copyright 14# notice, this list of conditions and the following disclaimer. 15# 2. Redistributions in binary form must reproduce the above copyright 16# notice, this list of conditions and the following disclaimer in the 17# documentation and/or other materials provided with the distribution. 18# 19# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29# POSSIBILITY OF SUCH DAMAGE. 30# 31 32width=$(xwininfo -root | awk '/Width:/{ print $2; }') 33height=$(xwininfo -root | awk '/Height:/{ print $2; }') 34dpi=$(xdpyinfo | awk '/resolution:/{ split($2, res, "x"); print res[1]; }' | head -1) 35 36# Attempt to select a reasonably sized font for the reported DPI. 37# 38# If the DPI is greater than 100, chances are it's specified and 39# not just a default. 40if [ "$dpi" -gt 100 ]; then 41 for size in 16 24 32 64; do 42 mm=$(printf '%d / (%d / 25)\n' "$size" "$dpi" | bc) 43 if [ "$mm" -ge 3 ]; then 44 printf '%d\n' "$size" 45 exit 0 46 fi 47 done 48fi 49 50# In case the reported DPI is lower than the actual DPI, allow at least 2x2 51# 80x24 xterms to be displayed in a grid. 52if [ "$width" -gt 6088 -a "$height" -gt 3656 ]; then 53 printf '64\n' 54elif [ "$width" -gt 3048 -a "$height" -gt 1832 ]; then 55 printf '32\n' 56elif [ "$width" -gt 2248 -a "$height" -gt 1400 ]; then 57 printf '24\n' 58elif [ "$width" -gt 640 -a "$height" -gt 480 ]; then 59 printf '16\n' 60else 61 # One 80x24 xterm with 16 pixel fonts does not fit into 640x480... 62 printf '12\n' 63fi 64