From 80c80d364563dbdcc789d2ddf68f1fd909dfd5a3 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@datawire.io>
Date: Fri, 3 May 2019 14:57:11 -0400
Subject: fix-dpi: Disallow regressions in DPI due to monitors going away

---
 .local/bin/fix-dpi | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/.local/bin/fix-dpi b/.local/bin/fix-dpi
index 90019c2..251b0ad 100755
--- a/.local/bin/fix-dpi
+++ b/.local/bin/fix-dpi
@@ -26,15 +26,27 @@
 
 	declare -A outputs
 	while read -r output fb_xpx fb_ypx hw_xmm hw_ymm hw_xpx hw_ypx; do
-		xdpi=$(bc <<<"($hw_xpx*25.4)/$hw_xmm")
-		ydpi=$(bc <<<"($hw_ypx*25.4)/$hw_ymm")
-		if (( xdpi > max_xdpi )); then
-			max_xdpi=$xdpi
+		hw_xdpi=$(bc <<<"($hw_xpx*25.4)/$hw_xmm")
+		hw_ydpi=$(bc <<<"($hw_ypx*25.4)/$hw_ymm")
+
+		fb_xdpi=$(bc <<<"($fb_xpx*25.4)/$hw_xmm")
+		fb_ydpi=$(bc <<<"($fb_ypx*25.4)/$hw_ymm")
+
+		if (( hw_xdpi > max_xdpi )); then
+			max_xdpi=$hw_xdpi
+		fi
+		if (( hw_ydpi > max_ydpi )); then
+			max_ydpi=$hw_ydpi
 		fi
-		if (( ydpi > max_ydpi )); then
-			max_ydpi=$ydpi
+
+		if (( fb_xdpi > max_xdpi )); then
+			max_xdpi=$fb_xdpi
+		fi
+		if (( fb_ydpi > max_ydpi )); then
+			max_ydpi=$fb_ydpi
 		fi
-		outputs["$output"]="$xdpi $ydpi"
+
+		outputs["$output"]="$hw_xdpi $hw_ydpi"
 	done
 	echo 'xrandr \'
 	printf '  --dpi %q \\\n' "${max_xdpi}x${max_ydpi}"
-- 
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